diff --git a/.travis.yml b/.travis.yml index 81ddefb8b..a3ffb221e 100644 --- a/.travis.yml +++ b/.travis.yml @@ -17,6 +17,15 @@ env: ############################################################################### # Ubuntu 16.04 LTS ############################################################################### + # 64-bit UBSan Debug build + - LINUX_BASE=ubuntu_16.04 C_COMPILER=/usr/bin/clang-3.9 CXX_COMPILER=/usr/bin/clang++-3.9 TARGET_ARCH=x86_64 Z3_BUILD_TYPE=Debug UBSAN_BUILD=1 RUN_UNIT_TESTS=SKIP + # 64-bit ASan Debug build + - LINUX_BASE=ubuntu_16.04 C_COMPILER=/usr/bin/clang-3.9 CXX_COMPILER=/usr/bin/clang++-3.9 TARGET_ARCH=x86_64 Z3_BUILD_TYPE=Debug ASAN_BUILD=1 RUN_UNIT_TESTS=SKIP ASAN_DSO=/usr/lib/clang/3.9/lib/linux/libclang_rt.asan-x86_64.so + # Build for running unit tests under ASan/UBSan + # FIXME: We should really be doing a debug build but the unit tests run too + # slowly when we do that. + - LINUX_BASE=ubuntu_16.04 C_COMPILER=/usr/bin/clang-3.9 CXX_COMPILER=/usr/bin/clang++-3.9 TARGET_ARCH=x86_64 Z3_BUILD_TYPE=RelWithDebInfo ASAN_BUILD=1 RUN_UNIT_TESTS=BUILD_AND_RUN ASAN_DSO=/usr/lib/clang/3.9/lib/linux/libclang_rt.asan-x86_64.so UBSAN_BUILD=1 RUN_API_EXAMPLES=0 RUN_SYSTEM_TESTS=0 DOTNET_BINDINGS=0 JAVA_BINDINGS=0 PYTHON_BINDINGS=0 + # 64-bit GCC 5.4 RelWithDebInfo - LINUX_BASE=ubuntu_16.04 C_COMPILER=/usr/bin/gcc-5 CXX_COMPILER=/usr/bin/g++-5 TARGET_ARCH=x86_64 Z3_BUILD_TYPE=RelWithDebInfo # 64-bit Clang 3.9 RelWithDebInfo diff --git a/README-CMake.md b/README-CMake.md index 605c14818..0d323e08f 100644 --- a/README-CMake.md +++ b/README-CMake.md @@ -270,6 +270,7 @@ The following useful options can be passed to CMake whilst configuring. * ``API_LOG_SYNC`` - BOOL. If set to ``TRUE`` will enable experimental API log sync feature. * ``WARNINGS_AS_ERRORS`` - STRING. If set to ``TRUE`` compiler warnings will be treated as errors. If set to ``False`` compiler warnings will not be treated as errors. If set to ``SERIOUS_ONLY`` a subset of compiler warnings will be treated as errors. +* ``Z3_C_EXAMPLES_FORCE_CXX_LINKER`` - BOOL. If set to ``TRUE`` the C API examples will request that the C++ linker is used rather than the C linker. On the command line these can be passed to ``cmake`` using the ``-D`` option. In ``ccmake`` and ``cmake-gui`` these can be set in the user interface. diff --git a/README.md b/README.md index 701556cc8..70956d439 100644 --- a/README.md +++ b/README.md @@ -124,7 +124,7 @@ utility is used to install ``Microsoft.Z3.dll`` into the [pkg-config](http://www.freedesktop.org/wiki/Software/pkg-config/) file (``Microsoft.Z3.Sharp.pc``) is also installed which allows the [MonoDevelop](http://www.monodevelop.com/) IDE to find the bindings. Running -``make uninstall`` will remove the dll from the GAC and the pkg-config file. +``make uninstall`` will remove the dll from the GAC and the ``pkg-config`` file. See [``examples/dotnet``](examples/dotnet) for examples. @@ -170,8 +170,8 @@ If you do need to install to a non standard prefix a better approach is to use a [Python virtual environment](https://virtualenv.readthedocs.org/en/latest/) and install Z3 there. Python packages also work for Python3. Under Windows, recall to build inside the Visual C++ native command build environment. -Note that the buit/python/z3 directory should be accessible from where python is used with Z3 -and it depends on libz3.dll to be in the path. +Note that the ``build/python/z3`` directory should be accessible from where python is used with Z3 +and it depends on ``libz3.dll`` to be in the path. ```bash virtualenv venv diff --git a/contrib/ci/Dockerfiles/z3_base_ubuntu32_16.04.Dockerfile b/contrib/ci/Dockerfiles/z3_base_ubuntu32_16.04.Dockerfile index d8a32edea..87e3c8d67 100644 --- a/contrib/ci/Dockerfiles/z3_base_ubuntu32_16.04.Dockerfile +++ b/contrib/ci/Dockerfiles/z3_base_ubuntu32_16.04.Dockerfile @@ -30,6 +30,7 @@ RUN apt-get update && \ libgomp1 \ libomp5 \ libomp-dev \ + llvm-3.9 \ make \ mono-devel \ ninja-build \ @@ -47,4 +48,4 @@ RUN useradd -m user && \ echo 'user ALL=(root) NOPASSWD: ALL' >> /etc/sudoers USER user WORKDIR /home/user - +ENV ASAN_SYMBOLIZER_PATH=/usr/lib/llvm-3.9/bin/llvm-symbolizer diff --git a/contrib/ci/Dockerfiles/z3_base_ubuntu_14.04.Dockerfile b/contrib/ci/Dockerfiles/z3_base_ubuntu_14.04.Dockerfile index c28e59e97..c963ce255 100644 --- a/contrib/ci/Dockerfiles/z3_base_ubuntu_14.04.Dockerfile +++ b/contrib/ci/Dockerfiles/z3_base_ubuntu_14.04.Dockerfile @@ -16,6 +16,7 @@ RUN apt-get update && \ libgmp-dev \ libgomp1 \ lib32gomp1 \ + llvm-3.9 \ make \ mono-devel \ ninja-build \ @@ -32,4 +33,4 @@ RUN useradd -m user && \ echo 'user ALL=(root) NOPASSWD: ALL' >> /etc/sudoers USER user WORKDIR /home/user - +ENV ASAN_SYMBOLIZER_PATH=/usr/lib/llvm-3.9/bin/llvm-symbolizer diff --git a/contrib/ci/Dockerfiles/z3_base_ubuntu_16.04.Dockerfile b/contrib/ci/Dockerfiles/z3_base_ubuntu_16.04.Dockerfile index 98a5a3e09..08686e275 100644 --- a/contrib/ci/Dockerfiles/z3_base_ubuntu_16.04.Dockerfile +++ b/contrib/ci/Dockerfiles/z3_base_ubuntu_16.04.Dockerfile @@ -18,6 +18,7 @@ RUN apt-get update && \ libgomp1 \ libomp5 \ libomp-dev \ + llvm-3.9 \ make \ mono-devel \ ninja-build \ @@ -35,4 +36,4 @@ RUN useradd -m user && \ echo 'user ALL=(root) NOPASSWD: ALL' >> /etc/sudoers USER user WORKDIR /home/user - +ENV ASAN_SYMBOLIZER_PATH=/usr/lib/llvm-3.9/bin/llvm-symbolizer diff --git a/contrib/ci/Dockerfiles/z3_build.Dockerfile b/contrib/ci/Dockerfiles/z3_build.Dockerfile index 07504e6b9..eb2e03a43 100644 --- a/contrib/ci/Dockerfiles/z3_build.Dockerfile +++ b/contrib/ci/Dockerfiles/z3_build.Dockerfile @@ -5,6 +5,7 @@ FROM ${DOCKER_IMAGE_BASE} # Build arguments. This can be changed when invoking # `docker build`. ARG ASAN_BUILD +ARG ASAN_DSO ARG BUILD_DOCS ARG CC ARG CXX @@ -13,8 +14,10 @@ ARG JAVA_BINDINGS ARG NO_SUPPRESS_OUTPUT ARG PYTHON_BINDINGS ARG PYTHON_EXECUTABLE=/usr/bin/python2.7 +ARG RUN_API_EXAMPLES ARG RUN_SYSTEM_TESTS ARG RUN_UNIT_TESTS +ARG SANITIZER_PRINT_SUPPRESSIONS ARG TARGET_ARCH ARG TEST_INSTALL ARG UBSAN_BUILD @@ -32,6 +35,7 @@ ARG Z3_VERBOSE_BUILD_OUTPUT ENV \ ASAN_BUILD=${ASAN_BUILD} \ + ASAN_DSO=${ASAN_DSO} \ BUILD_DOCS=${BUILD_DOCS} \ CC=${CC} \ CXX=${CXX} \ @@ -40,6 +44,8 @@ ENV \ NO_SUPPRESS_OUTPUT=${NO_SUPPRESS_OUTPUT} \ PYTHON_BINDINGS=${PYTHON_BINDINGS} \ PYTHON_EXECUTABLE=${PYTHON_EXECUTABLE} \ + SANITIZER_PRINT_SUPPRESSIONS=${SANITIZER_PRINT_SUPPRESSIONS} \ + RUN_API_EXAMPLES=${RUN_API_EXAMPLES} \ RUN_SYSTEM_TESTS=${RUN_SYSTEM_TESTS} \ RUN_UNIT_TESTS=${RUN_UNIT_TESTS} \ TARGET_ARCH=${TARGET_ARCH} \ @@ -50,6 +56,7 @@ ENV \ USE_OPENMP=${USE_OPENMP} \ Z3_SRC_DIR=${Z3_SRC_DIR} \ Z3_BUILD_DIR=/home/user/z3_build \ + Z3_BUILD_TYPE=${Z3_BUILD_TYPE} \ Z3_CMAKE_GENERATOR=${Z3_CMAKE_GENERATOR} \ Z3_VERBOSE_BUILD_OUTPUT=${Z3_VERBOSE_BUILD_OUTPUT} \ Z3_STATIC_BUILD=${Z3_STATIC_BUILD} \ @@ -62,7 +69,8 @@ ENV \ # Build Z3 RUN mkdir -p "${Z3_SRC_DIR}" && \ - mkdir -p "${Z3_SRC_DIR}/contrib/ci/scripts" + mkdir -p "${Z3_SRC_DIR}/contrib/ci/scripts" && \ + mkdir -p "${Z3_SRC_DIR}/contrib/suppressions/sanitizers" # Deliberately leave out `contrib` ADD /cmake ${Z3_SRC_DIR}/cmake/ ADD /doc ${Z3_SRC_DIR}/doc/ @@ -89,7 +97,13 @@ RUN ${Z3_SRC_DIR}/contrib/ci/scripts/test_z3_docs.sh # Test examples ADD \ /contrib/ci/scripts/test_z3_examples_cmake.sh \ + /contrib/ci/scripts/sanitizer_env.sh \ ${Z3_SRC_DIR}/contrib/ci/scripts/ +ADD \ + /contrib/suppressions/sanitizers/asan.txt \ + /contrib/suppressions/sanitizers/lsan.txt \ + /contrib/suppressions/sanitizers/ubsan.txt \ + ${Z3_SRC_DIR}/contrib/suppressions/sanitizers/ RUN ${Z3_SRC_DIR}/contrib/ci/scripts/test_z3_examples_cmake.sh # Run unit tests diff --git a/contrib/ci/README.md b/contrib/ci/README.md index 99bbcd7a6..bd1c52792 100644 --- a/contrib/ci/README.md +++ b/contrib/ci/README.md @@ -30,8 +30,10 @@ the future. * `JAVA_BINDINGS` - Build and test Java API bindings (`0` or `1`) * `NO_SUPPRESS_OUTPUT` - Don't suppress output of some commands (`0` or `1`) * `PYTHON_BINDINGS` - Build and test Python API bindings (`0` or `1`) +* `RUN_API_EXAMPLES` - Build and run API examples (`0` or `1`) * `RUN_SYSTEM_TESTS` - Run system tests (`0` or `1`) * `RUN_UNIT_TESTS` - Run unit tests (`BUILD_ONLY` or `BUILD_AND_RUN` or `SKIP`) +* `SANITIZER_PRINT_SUPPRESSIONS` - Show ASan/UBSan suppressions (`0` or `1`) * `TARGET_ARCH` - Target architecture (`x86_64` or `i686`) * `TEST_INSTALL` - Test running `install` target (`0` or `1`) * `UBSAN_BUILD` - Do [UndefinedBehaviourSanitizer](https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html) build (`0` or `1`) diff --git a/contrib/ci/scripts/build_z3_cmake.sh b/contrib/ci/scripts/build_z3_cmake.sh index 76fd0fb84..c1014d5d5 100755 --- a/contrib/ci/scripts/build_z3_cmake.sh +++ b/contrib/ci/scripts/build_z3_cmake.sh @@ -22,6 +22,7 @@ set -o pipefail : ${USE_LTO?"USE_LTO must be specified"} : ${Z3_INSTALL_PREFIX?"Z3_INSTALL_PREFIX must be specified"} : ${Z3_WARNINGS_AS_ERRORS?"Z3_WARNINGS_AS_ERRORS must be specified"} +: ${UBSAN_BUILD?"UBSAN_BUILD must be specified"} ADDITIONAL_Z3_OPTS=() @@ -105,6 +106,16 @@ fi # Set compiler flags source ${SCRIPT_DIR}/set_compiler_flags.sh +if [ "X${UBSAN_BUILD}" = "X1" ]; then + # HACK: When building with UBSan the C++ linker + # must be used to avoid the following linker errors. + # undefined reference to `__ubsan_vptr_type_cache' + # undefined reference to `__ubsan_handle_dynamic_type_cache_miss' + ADDITIONAL_Z3_OPTS+=( \ + '-DZ3_C_EXAMPLES_FORCE_CXX_LINKER=ON' \ + ) +fi + # Sanity check if [ ! -e "${Z3_SRC_DIR}/CMakeLists.txt" ]; then echo "Z3_SRC_DIR is invalid" diff --git a/contrib/ci/scripts/ci_defaults.sh b/contrib/ci/scripts/ci_defaults.sh index d8e9376d8..7a4434bd5 100644 --- a/contrib/ci/scripts/ci_defaults.sh +++ b/contrib/ci/scripts/ci_defaults.sh @@ -9,8 +9,13 @@ export DOTNET_BINDINGS="${DOTNET_BINDINGS:-1}" export JAVA_BINDINGS="${JAVA_BINDINGS:-1}" export NO_SUPPRESS_OUTPUT="${NO_SUPPRESS_OUTPUT:-0}" export PYTHON_BINDINGS="${PYTHON_BINDINGS:-1}" +export RUN_API_EXAMPLES="${RUN_API_EXAMPLES:-1}" export RUN_SYSTEM_TESTS="${RUN_SYSTEM_TESTS:-1}" export RUN_UNIT_TESTS="${RUN_UNIT_TESTS:-BUILD_AND_RUN}" +# Don't print suppressions by default because that breaks the Z3 +# regression tests because they don't expect them to appear in Z3's +# output. +export SANITIZER_PRINT_SUPPRESSIONS="${SANITIZER_PRINT_SUPPRESSIONS:-0}" export TARGET_ARCH="${TARGET_ARCH:-x86_64}" export TEST_INSTALL="${TEST_INSTALL:-1}" export UBSAN_BUILD="${UBSAN_BUILD:-0}" @@ -49,6 +54,7 @@ unset PLATFORM # NOTE: The following variables are not set here because # they are specific to the CI implementation # PYTHON_EXECUTABLE +# ASAN_DSO # Z3_SRC_DIR # Z3_BUILD_DIR # Z3_SYSTEM_TEST_DIR diff --git a/contrib/ci/scripts/run_quiet.sh b/contrib/ci/scripts/run_quiet.sh index 5abc910e8..0f49da3be 100644 --- a/contrib/ci/scripts/run_quiet.sh +++ b/contrib/ci/scripts/run_quiet.sh @@ -34,8 +34,8 @@ function run_quiet() { fi # Clean up rm "${STDOUT}" "${STDERR}" - [ $( echo "${OLD_SETTINGS}" | grep -c 'e') -ne 0 ] && set -e - [ $( echo "${OLD_SETTINGS}" | grep -c 'x') -ne 0 ] && set -x + [ "$( echo "${OLD_SETTINGS}" | grep -c 'e')" != "0" ] && set -e + [ "$( echo "${OLD_SETTINGS}" | grep -c 'x')" != "0" ] && set -x return ${EXIT_STATUS} fi } diff --git a/contrib/ci/scripts/sanitizer_env.sh b/contrib/ci/scripts/sanitizer_env.sh new file mode 100644 index 000000000..f1fa87442 --- /dev/null +++ b/contrib/ci/scripts/sanitizer_env.sh @@ -0,0 +1,82 @@ +# This script is intended to be included by other +# scripts and should not be executed directly + +: ${Z3_SRC_DIR?"Z3_SRC_DIR must be specified"} +: ${ASAN_BUILD?"ASAN_BUILD must be specified"} +: ${UBSAN_BUILD?"UBSAN_BUILD must be specified"} + +if [ "X${ASAN_BUILD}" = "X1" ]; then + # Use suppression files + export LSAN_OPTIONS="suppressions=${Z3_SRC_DIR}/contrib/suppressions/sanitizers/lsan.txt" + # NOTE: If you get bad stacktraces try using `fast_unwind_on_malloc=0` + # NOTE: `malloc_context_size` controls size of recorded stacktrace for allocations. + # If the reported stacktraces appear incomplete try increasing the value. + export ASAN_OPTIONS="malloc_context_size=100,suppressions=${Z3_SRC_DIR}/contrib/suppressions/sanitizers/asan.txt" + + : ${SANITIZER_PRINT_SUPPRESSIONS?"SANITIZER_PRINT_SUPPRESSIONS must be specified"} + if [ "X${SANITIZER_PRINT_SUPPRESSIONS}" = "X1" ]; then + export LSAN_OPTIONS="${LSAN_OPTIONS},print_suppressions=1" + export ASAN_OPTIONS="${ASAN_OPTIONS},print_suppressions=1" + else + export LSAN_OPTIONS="${LSAN_OPTIONS},print_suppressions=0" + export ASAN_OPTIONS="${ASAN_OPTIONS},print_suppressions=0" + fi + + : ${ASAN_SYMBOLIZER_PATH?"ASAN_SYMBOLIZER_PATH must be specified"} + + # Run command without checking for leaks + function run_no_lsan() { + ASAN_OPTIONS="${ASAN_OPTIONS},detect_leaks=0" "${@}" + } + + # Check path to ASan DSO + : ${ASAN_DSO?"ASAN_DSO must be specified"} + if [ ! -e "${ASAN_DSO}" ]; then + echo "ASAN_DSO (${ASAN_DSO}) does not exist" + exit 1 + fi + # FIXME: We'll need to refactor this when we can do UBSan builds + # against a UBSan DSO. + function run_non_native_binding() { + # We need to preload the ASan DSO that libz3 + # will have undefined references to. + # Don't run leak checking because we get lots reported leaks + # in the language runtime (e.g. python). + PLATFORM="$(uname -s)" + case "${PLATFORM}" in + Linux*) + LD_PRELOAD="${ASAN_DSO}" run_no_lsan "${@}" + ;; + Darwin*) + DYLD_INSERT_LIBRARIES="${ASAN_DSO}" run_no_lsan "${@}" + ;; + *) + echo "Unknown platform \"${PLATFORM}\"" + exit 1 + ;; + esac + unset PLATFORM + } +else + # In non-ASan build just run directly + function run_no_lsan() { + "${@}" + } + function run_non_native_binding() { + "${@}" + } +fi + +if [ "X${UBSAN_BUILD}" = "X1" ]; then + # `halt_on_error=1,abort_on_error=1` means that on the first UBSan error + # the program will terminate by calling `abort(). Without this UBSan will + # allow execution to continue. We also use a suppression file. + export UBSAN_OPTIONS="halt_on_error=1,abort_on_error=1,suppressions=${Z3_SRC_DIR}/contrib/suppressions/sanitizers/ubsan.txt" + + : ${SANITIZER_PRINT_SUPPRESSIONS?"SANITIZER_PRINT_SUPPRESSIONS must be specified"} + if [ "X${SANITIZER_PRINT_SUPPRESSIONS}" = "X1" ]; then + export UBSAN_OPTIONS="${UBSAN_OPTIONS},print_suppressions=1" + else + export UBSAN_OPTIONS="${UBSAN_OPTIONS},print_suppressions=0" + fi +fi diff --git a/contrib/ci/scripts/test_z3_examples_cmake.sh b/contrib/ci/scripts/test_z3_examples_cmake.sh index 2eda3de7b..687efebb4 100755 --- a/contrib/ci/scripts/test_z3_examples_cmake.sh +++ b/contrib/ci/scripts/test_z3_examples_cmake.sh @@ -14,6 +14,13 @@ set -o pipefail : ${PYTHON_EXECUTABLE?"PYTHON_EXECUTABLE must be specified"} : ${DOTNET_BINDINGS?"DOTNET_BINDINGS must be specified"} : ${JAVA_BINDINGS?"JAVA_BINDINGS must be specified"} +: ${UBSAN_BUILD?"UBSAN_BUILD must be specified"} +: ${RUN_API_EXAMPLES?"RUN_API_EXAMPLES must be specified"} + +if [ "X${RUN_API_EXAMPLES}" = "X0" ]; then + echo "Skipping run of API examples" + exit 0 +fi # Set compiler flags source ${SCRIPT_DIR}/set_compiler_flags.sh @@ -21,6 +28,9 @@ source ${SCRIPT_DIR}/set_compiler_flags.sh # Set CMake generator args source ${SCRIPT_DIR}/set_generator_args.sh +# Sanitizer environment variables +source ${SCRIPT_DIR}/sanitizer_env.sh + cd "${Z3_BUILD_DIR}" # Build and run C example @@ -38,9 +48,21 @@ run_quiet examples/tptp_build_dir/z3_tptp5 -help # Build an run c_maxsat_example cmake --build $(pwd) --target c_maxsat_example "${GENERATOR_ARGS[@]}" -run_quiet \ - examples/c_maxsat_example_build_dir/c_maxsat_example \ - ${Z3_SRC_DIR}/examples/maxsat/ex.smt +# FIXME: It is known that the maxsat example leaks memory and the +# the Z3 developers have stated this is "wontfix". +# See https://github.com/Z3Prover/z3/issues/1299 +run_no_lsan \ + run_quiet \ + examples/c_maxsat_example_build_dir/c_maxsat_example \ + ${Z3_SRC_DIR}/examples/maxsat/ex.smt + +if [ "X${UBSAN_BUILD}" = "X1" ]; then + # FIXME: We really need libz3 to link against a shared UBSan runtime. + # Right now we link against the static runtime which breaks all the + # non-native language bindings. + echo "FIXME: Can't run other examples when building with UBSan" + exit 0 +fi if [ "X${PYTHON_BINDINGS}" = "X1" ]; then @@ -48,16 +70,21 @@ if [ "X${PYTHON_BINDINGS}" = "X1" ]; then # `all_interval_series.py` produces a lot of output so just throw # away output. # TODO: This example is slow should we remove it from testing? - run_quiet ${PYTHON_EXECUTABLE} python/all_interval_series.py - run_quiet ${PYTHON_EXECUTABLE} python/complex.py - run_quiet ${PYTHON_EXECUTABLE} python/example.py + if [ "X${ASAN_BUILD}" = "X1" -a "X${Z3_BUILD_TYPE}" = "XDebug" ]; then + # Too slow when doing ASan Debug build + echo "Skipping all_interval_series.py under ASan Debug build" + else + run_quiet run_non_native_binding ${PYTHON_EXECUTABLE} python/all_interval_series.py + fi + run_quiet run_non_native_binding ${PYTHON_EXECUTABLE} python/complex.py + run_quiet run_non_native_binding ${PYTHON_EXECUTABLE} python/example.py # FIXME: `hamiltonian.py` example is disabled because its too slow. #${PYTHON_EXECUTABLE} python/hamiltonian.py - run_quiet ${PYTHON_EXECUTABLE} python/marco.py - run_quiet ${PYTHON_EXECUTABLE} python/mss.py - run_quiet ${PYTHON_EXECUTABLE} python/socrates.py - run_quiet ${PYTHON_EXECUTABLE} python/visitor.py - run_quiet ${PYTHON_EXECUTABLE} python/z3test.py + run_quiet run_non_native_binding ${PYTHON_EXECUTABLE} python/marco.py + run_quiet run_non_native_binding ${PYTHON_EXECUTABLE} python/mss.py + run_quiet run_non_native_binding ${PYTHON_EXECUTABLE} python/socrates.py + run_quiet run_non_native_binding ${PYTHON_EXECUTABLE} python/visitor.py + run_quiet run_non_native_binding ${PYTHON_EXECUTABLE} python/z3test.py fi if [ "X${DOTNET_BINDINGS}" = "X1" ]; then @@ -65,7 +92,7 @@ if [ "X${DOTNET_BINDINGS}" = "X1" ]; then # FIXME: Move compliation step into CMake target mcs ${Z3_SRC_DIR}/examples/dotnet/Program.cs /target:exe /out:dotnet_test.exe /reference:Microsoft.Z3.dll /r:System.Numerics.dll # Run .NET example - run_quiet mono ./dotnet_test.exe + run_quiet run_non_native_binding mono ./dotnet_test.exe fi if [ "X${JAVA_BINDINGS}" = "X1" ]; then @@ -82,6 +109,14 @@ if [ "X${JAVA_BINDINGS}" = "X1" ]; then # Assume Linux for now export LD_LIBRARY_PATH=$(pwd):${LD_LIBRARY_PATH} fi - run_quiet java -cp .:examples/java:com.microsoft.z3.jar JavaExample + if [ "X${ASAN_BUILD}" = "X1" ]; then + # The JVM seems to crash (SEGV) if we pre-load ASan + # so don't run it for now. + echo "Skipping JavaExample under ASan build" + else + run_quiet \ + run_non_native_binding \ + java -cp .:examples/java:com.microsoft.z3.jar JavaExample + fi fi diff --git a/contrib/ci/scripts/test_z3_system_tests.sh b/contrib/ci/scripts/test_z3_system_tests.sh index dfb1084a4..19c179268 100755 --- a/contrib/ci/scripts/test_z3_system_tests.sh +++ b/contrib/ci/scripts/test_z3_system_tests.sh @@ -10,12 +10,17 @@ set -o pipefail : ${PYTHON_BINDINGS?"PYTHON_BINDINGS must be specified"} : ${PYTHON_EXECUTABLE?"PYTHON_EXECUTABLE must be specified"} : ${Z3_SYSTEM_TEST_DIR?"Z3_SYSTEM_TEST_DIR must be specified"} +: ${UBSAN_BUILD?"UBSAN_BUILD must be specified"} if [ "X${RUN_SYSTEM_TESTS}" != "X1" ]; then echo "Skipping system tests" exit 0 fi +# Sanitizer environment variables +SCRIPT_DIR="$( cd ${BASH_SOURCE[0]%/*} ; echo $PWD )" +source ${SCRIPT_DIR}/sanitizer_env.sh + Z3_EXE="${Z3_BUILD_DIR}/z3" Z3_LIB_DIR="${Z3_BUILD_DIR}" @@ -23,7 +28,7 @@ Z3_LIB_DIR="${Z3_BUILD_DIR}" Z3_SYSTEM_TEST_GIT_URL="${Z3_GIT_URL:-https://github.com/Z3Prover/z3test.git}" # Clone repo to destination -mkdir -p "${Z3_SYSTEM_TEST_GIT_URL}" +mkdir -p "${Z3_SYSTEM_TEST_DIR}" git clone "${Z3_SYSTEM_TEST_GIT_URL}" "${Z3_SYSTEM_TEST_DIR}" cd "${Z3_SYSTEM_TEST_DIR}" @@ -48,7 +53,18 @@ fi if [ "X${PYTHON_BINDINGS}" = "X1" ]; then # Run python binding tests - ${PYTHON_EXECUTABLE} scripts/test_pyscripts.py "${Z3_LIB_DIR}" regressions/python/ + if [ "X${UBSAN_BUILD}" = "X1" ]; then + # FIXME: We need to build libz3 with a shared UBSan runtime for the bindings + # to work. + echo "FIXME: Skipping python binding tests when building with UBSan" + elif [ "X${ASAN_BUILD}" = "X1" ]; then + # FIXME: The `test_pyscripts.py` doesn't propagate LD_PRELOAD + # so under ASan the tests fail to run + # to work. + echo "FIXME: Skipping python binding tests when building with ASan" + else + run_non_native_binding ${PYTHON_EXECUTABLE} scripts/test_pyscripts.py "${Z3_LIB_DIR}" regressions/python/ + fi fi # FIXME: Run `scripts/test_cs.py` once it has been modified to support mono diff --git a/contrib/ci/scripts/test_z3_unit_tests_cmake.sh b/contrib/ci/scripts/test_z3_unit_tests_cmake.sh index e1c927f58..60c29556b 100755 --- a/contrib/ci/scripts/test_z3_unit_tests_cmake.sh +++ b/contrib/ci/scripts/test_z3_unit_tests_cmake.sh @@ -13,6 +13,9 @@ set -o pipefail # Set CMake generator args source ${SCRIPT_DIR}/set_generator_args.sh +# Sanitizer environment variables +source ${SCRIPT_DIR}/sanitizer_env.sh + cd "${Z3_BUILD_DIR}" function build_unit_tests() { diff --git a/contrib/ci/scripts/travis_ci_linux_entry_point.sh b/contrib/ci/scripts/travis_ci_linux_entry_point.sh index bd2c9d2d1..731ea9ff0 100755 --- a/contrib/ci/scripts/travis_ci_linux_entry_point.sh +++ b/contrib/ci/scripts/travis_ci_linux_entry_point.sh @@ -84,6 +84,14 @@ if [ -n "${ASAN_BUILD}" ]; then BUILD_OPTS+=("--build-arg" "ASAN_BUILD=${ASAN_BUILD}") fi +if [ -n "${ASAN_DSO}" ]; then + BUILD_OPTS+=("--build-arg" "ASAN_DSO=${ASAN_DSO}") +fi + +if [ -n "${SANITIZER_PRINT_SUPPRESSIONS}" ]; then + BUILD_OPTS+=("--build-arg" "SANITIZER_PRINT_SUPPRESSIONS=${SANITIZER_PRINT_SUPPRESSIONS}") +fi + if [ -n "${UBSAN_BUILD}" ]; then BUILD_OPTS+=("--build-arg" "UBSAN_BUILD=${UBSAN_BUILD}") fi @@ -92,6 +100,10 @@ if [ -n "${TEST_INSTALL}" ]; then BUILD_OPTS+=("--build-arg" "TEST_INSTALL=${TEST_INSTALL}") fi +if [ -n "${RUN_API_EXAMPLES}" ]; then + BUILD_OPTS+=("--build-arg" "RUN_API_EXAMPLES=${RUN_API_EXAMPLES}") +fi + if [ -n "${RUN_SYSTEM_TESTS}" ]; then BUILD_OPTS+=("--build-arg" "RUN_SYSTEM_TESTS=${RUN_SYSTEM_TESTS}") fi diff --git a/contrib/suppressions/README.md b/contrib/suppressions/README.md new file mode 100644 index 000000000..90df39084 --- /dev/null +++ b/contrib/suppressions/README.md @@ -0,0 +1,7 @@ +# Suppression files + +This directory contains suppression files used by various +program analysis tools. + +Suppression files tell a program analysis tool to suppress +various warnings/errors. diff --git a/contrib/suppressions/maintainers.txt b/contrib/suppressions/maintainers.txt new file mode 100644 index 000000000..caa6798c6 --- /dev/null +++ b/contrib/suppressions/maintainers.txt @@ -0,0 +1,3 @@ +# Maintainers + +- Dan Liew (@delcypher) diff --git a/contrib/suppressions/sanitizers/README.md b/contrib/suppressions/sanitizers/README.md new file mode 100644 index 000000000..f76f920b2 --- /dev/null +++ b/contrib/suppressions/sanitizers/README.md @@ -0,0 +1,4 @@ +# Sanitizer supression files + +This directory contains files used to suppress +ASan/LSan/UBSan warnings/errors. diff --git a/contrib/suppressions/sanitizers/asan.txt b/contrib/suppressions/sanitizers/asan.txt new file mode 100644 index 000000000..f058adfe2 --- /dev/null +++ b/contrib/suppressions/sanitizers/asan.txt @@ -0,0 +1 @@ +# AddressSanitizer suppression file diff --git a/contrib/suppressions/sanitizers/lsan.txt b/contrib/suppressions/sanitizers/lsan.txt new file mode 100644 index 000000000..1480b7c09 --- /dev/null +++ b/contrib/suppressions/sanitizers/lsan.txt @@ -0,0 +1,5 @@ +# LeakSanitizer suppression file + +# Ignore Clang OpenMP leaks. +# See https://github.com/Z3Prover/z3/issues/1308 +leak:___kmp_allocate diff --git a/contrib/suppressions/sanitizers/ubsan.txt b/contrib/suppressions/sanitizers/ubsan.txt new file mode 100644 index 000000000..4d19e40be --- /dev/null +++ b/contrib/suppressions/sanitizers/ubsan.txt @@ -0,0 +1,7 @@ +# UndefinedBehavior sanitizer suppression file +# FIXME: UBSan doesn't usually have false positives so we need to fix all of these! + +# Occurs when running tptp example +# See https://github.com/Z3Prover/z3/issues/964 +null:rational.h +null:mpq.h diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt index ba7f6ee59..6c50320ed 100644 --- a/examples/CMakeLists.txt +++ b/examples/CMakeLists.txt @@ -7,6 +7,30 @@ else() set(EXTERNAL_PROJECT_BUILD_ALWAYS_ARG "") endif() +option(Z3_C_EXAMPLES_FORCE_CXX_LINKER + "Force C++ linker when building C example projects" OFF) + +if (Z3_C_EXAMPLES_FORCE_CXX_LINKER) + # HACK: This is a workaround for UBSan. + message(STATUS "Forcing C++ linker to be used when building example C projects") + set(EXTERNAL_C_PROJ_USE_CXX_LINKER_ARG + "-DFORCE_CXX_LINKER=ON" + ) +else() + set(EXTERNAL_C_PROJ_USE_CXX_LINKER_ARG "") +endif() + +if (DEFINED CMAKE_CONFIGURATION_TYPES) + message(WARNING + "Cannot set built type of external project when building with a " + "multi-configuration generator") + set(EXTERNAL_PROJECT_CMAKE_BUILD_TYPE_ARG "") +else() + set(EXTERNAL_PROJECT_CMAKE_BUILD_TYPE_ARG + "-DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}" + ) +endif() + ################################################################################ # Build example project using libz3's C API as an external project ################################################################################ @@ -14,7 +38,10 @@ ExternalProject_Add(c_example DEPENDS libz3 # Configure step SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/c" - CMAKE_ARGS "-DZ3_DIR=${CMAKE_BINARY_DIR}" + CMAKE_ARGS + "-DZ3_DIR=${CMAKE_BINARY_DIR}" + "${EXTERNAL_C_PROJ_USE_CXX_LINKER_ARG}" + "${EXTERNAL_PROJECT_CMAKE_BUILD_TYPE_ARG}" # Build step ${EXTERNAL_PROJECT_BUILD_ALWAYS_ARG} BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}/c_example_build_dir" @@ -30,7 +57,10 @@ ExternalProject_Add(c_maxsat_example DEPENDS libz3 # Configure step SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/maxsat" - CMAKE_ARGS "-DZ3_DIR=${CMAKE_BINARY_DIR}" + CMAKE_ARGS + "-DZ3_DIR=${CMAKE_BINARY_DIR}" + "${EXTERNAL_C_PROJ_USE_CXX_LINKER_ARG}" + "${EXTERNAL_PROJECT_CMAKE_BUILD_TYPE_ARG}" # Build step ${EXTERNAL_PROJECT_BUILD_ALWAYS_ARG} BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}/c_maxsat_example_build_dir" @@ -47,7 +77,9 @@ ExternalProject_Add(cpp_example DEPENDS libz3 # Configure step SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/c++" - CMAKE_ARGS "-DZ3_DIR=${CMAKE_BINARY_DIR}" + CMAKE_ARGS + "-DZ3_DIR=${CMAKE_BINARY_DIR}" + "${EXTERNAL_PROJECT_CMAKE_BUILD_TYPE_ARG}" # Build step ${EXTERNAL_PROJECT_BUILD_ALWAYS_ARG} BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}/cpp_example_build_dir" @@ -63,7 +95,9 @@ ExternalProject_Add(z3_tptp5 DEPENDS libz3 # Configure step SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/tptp" - CMAKE_ARGS "-DZ3_DIR=${CMAKE_BINARY_DIR}" + CMAKE_ARGS + "-DZ3_DIR=${CMAKE_BINARY_DIR}" + "${EXTERNAL_PROJECT_CMAKE_BUILD_TYPE_ARG}" # Build step ${EXTERNAL_PROJECT_BUILD_ALWAYS_ARG} BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}/tptp_build_dir" diff --git a/examples/c/CMakeLists.txt b/examples/c/CMakeLists.txt index dd8fa6328..c47a4947a 100644 --- a/examples/c/CMakeLists.txt +++ b/examples/c/CMakeLists.txt @@ -7,6 +7,19 @@ # the C++ standard library in resulting in a link failure. project(Z3_C_EXAMPLE C CXX) cmake_minimum_required(VERSION 2.8.12) + +# Set C version required to C99 +if ("${CMAKE_VERSION}" VERSION_LESS "3.1") + if (("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU") OR + ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")) + set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99 ") + endif() +else() + set(CMAKE_C_STANDARD_REQUIRED ON) + set(CMAKE_C_STANDARD 99) + set(CMAKE_C_EXTENSIONS OFF) +endif() + find_package(Z3 REQUIRED CONFIG @@ -22,6 +35,17 @@ message(STATUS "Found Z3 ${Z3_VERSION_STRING}") message(STATUS "Z3_DIR: ${Z3_DIR}") add_executable(c_example test_capi.c) + +option(FORCE_CXX_LINKER "Force linker with C++ linker" OFF) +if (FORCE_CXX_LINKER) + # This is a hack for avoiding UBSan linking errors + message(STATUS "Forcing use of C++ linker") + set_target_properties(c_example + PROPERTIES + LINKER_LANGUAGE CXX + ) +endif() + target_include_directories(c_example PRIVATE ${Z3_C_INCLUDE_DIRS}) target_link_libraries(c_example PRIVATE ${Z3_LIBRARIES}) diff --git a/examples/c/test_capi.c b/examples/c/test_capi.c index 62aac110d..53c0caa9b 100644 --- a/examples/c/test_capi.c +++ b/examples/c/test_capi.c @@ -2771,80 +2771,279 @@ void fpa_example() { double_sort = Z3_mk_fpa_sort(ctx, 11, 53); rm_sort = Z3_mk_fpa_rounding_mode_sort(ctx); - // Show that there are x, y s.t. (x + y) = 42.0 (with rounding mode). - s_rm = Z3_mk_string_symbol(ctx, "rm"); - rm = Z3_mk_const(ctx, s_rm, rm_sort); - s_x = Z3_mk_string_symbol(ctx, "x"); - s_y = Z3_mk_string_symbol(ctx, "y"); - x = Z3_mk_const(ctx, s_x, double_sort); - y = Z3_mk_const(ctx, s_y, double_sort); - n = Z3_mk_fpa_numeral_double(ctx, 42.0, double_sort); - - s_x_plus_y = Z3_mk_string_symbol(ctx, "x_plus_y"); - x_plus_y = Z3_mk_const(ctx, s_x_plus_y, double_sort); - c1 = Z3_mk_eq(ctx, x_plus_y, Z3_mk_fpa_add(ctx, rm, x, y)); - - args[0] = c1; - args[1] = Z3_mk_eq(ctx, x_plus_y, n); - c2 = Z3_mk_and(ctx, 2, (Z3_ast*)&args); - - args2[0] = c2; - args2[1] = Z3_mk_not(ctx, Z3_mk_eq(ctx, rm, Z3_mk_fpa_rtz(ctx))); - c3 = Z3_mk_and(ctx, 2, (Z3_ast*)&args2); - - and_args[0] = Z3_mk_not(ctx, Z3_mk_fpa_is_zero(ctx, y)); - and_args[1] = Z3_mk_not(ctx, Z3_mk_fpa_is_nan(ctx, y)); - and_args[2] = Z3_mk_not(ctx, Z3_mk_fpa_is_infinite(ctx, y)); - args3[0] = c3; - args3[1] = Z3_mk_and(ctx, 3, and_args); - c4 = Z3_mk_and(ctx, 2, (Z3_ast*)&args3); - - printf("c4: %s\n", Z3_ast_to_string(ctx, c4)); - Z3_solver_push(ctx, s); - Z3_solver_assert(ctx, s, c4); - check(ctx, s, Z3_L_TRUE); - Z3_solver_pop(ctx, s, 1); - - // Show that the following are equal: - // (fp #b0 #b10000000001 #xc000000000000) - // ((_ to_fp 11 53) #x401c000000000000)) - // ((_ to_fp 11 53) RTZ 1.75 2))) - // ((_ to_fp 11 53) RTZ 7.0))) - - Z3_solver_push(ctx, s); - c1 = Z3_mk_fpa_fp(ctx, - Z3_mk_numeral(ctx, "0", Z3_mk_bv_sort(ctx, 1)), - Z3_mk_numeral(ctx, "1025", Z3_mk_bv_sort(ctx, 11)), + // Show that there are x, y s.t. (x + y) = 42.0 (with rounding mode). + s_rm = Z3_mk_string_symbol(ctx, "rm"); + rm = Z3_mk_const(ctx, s_rm, rm_sort); + s_x = Z3_mk_string_symbol(ctx, "x"); + s_y = Z3_mk_string_symbol(ctx, "y"); + x = Z3_mk_const(ctx, s_x, double_sort); + y = Z3_mk_const(ctx, s_y, double_sort); + n = Z3_mk_fpa_numeral_double(ctx, 42.0, double_sort); + + s_x_plus_y = Z3_mk_string_symbol(ctx, "x_plus_y"); + x_plus_y = Z3_mk_const(ctx, s_x_plus_y, double_sort); + c1 = Z3_mk_eq(ctx, x_plus_y, Z3_mk_fpa_add(ctx, rm, x, y)); + + args[0] = c1; + args[1] = Z3_mk_eq(ctx, x_plus_y, n); + c2 = Z3_mk_and(ctx, 2, (Z3_ast*)&args); + + args2[0] = c2; + args2[1] = Z3_mk_not(ctx, Z3_mk_eq(ctx, rm, Z3_mk_fpa_rtz(ctx))); + c3 = Z3_mk_and(ctx, 2, (Z3_ast*)&args2); + + and_args[0] = Z3_mk_not(ctx, Z3_mk_fpa_is_zero(ctx, y)); + and_args[1] = Z3_mk_not(ctx, Z3_mk_fpa_is_nan(ctx, y)); + and_args[2] = Z3_mk_not(ctx, Z3_mk_fpa_is_infinite(ctx, y)); + args3[0] = c3; + args3[1] = Z3_mk_and(ctx, 3, and_args); + c4 = Z3_mk_and(ctx, 2, (Z3_ast*)&args3); + + printf("c4: %s\n", Z3_ast_to_string(ctx, c4)); + Z3_solver_push(ctx, s); + Z3_solver_assert(ctx, s, c4); + check(ctx, s, Z3_L_TRUE); + Z3_solver_pop(ctx, s, 1); + + // Show that the following are equal: + // (fp #b0 #b10000000001 #xc000000000000) + // ((_ to_fp 11 53) #x401c000000000000)) + // ((_ to_fp 11 53) RTZ 1.75 2))) + // ((_ to_fp 11 53) RTZ 7.0))) + + Z3_solver_push(ctx, s); + c1 = Z3_mk_fpa_fp(ctx, + Z3_mk_numeral(ctx, "0", Z3_mk_bv_sort(ctx, 1)), + Z3_mk_numeral(ctx, "1025", Z3_mk_bv_sort(ctx, 11)), Z3_mk_numeral(ctx, "3377699720527872", Z3_mk_bv_sort(ctx, 52))); - c2 = Z3_mk_fpa_to_fp_bv(ctx, - Z3_mk_numeral(ctx, "4619567317775286272", Z3_mk_bv_sort(ctx, 64)), - Z3_mk_fpa_sort(ctx, 11, 53)); + c2 = Z3_mk_fpa_to_fp_bv(ctx, + Z3_mk_numeral(ctx, "4619567317775286272", Z3_mk_bv_sort(ctx, 64)), + Z3_mk_fpa_sort(ctx, 11, 53)); c3 = Z3_mk_fpa_to_fp_int_real(ctx, Z3_mk_fpa_rtz(ctx), - Z3_mk_numeral(ctx, "2", Z3_mk_int_sort(ctx)), /* exponent */ + Z3_mk_numeral(ctx, "2", Z3_mk_int_sort(ctx)), /* exponent */ Z3_mk_numeral(ctx, "1.75", Z3_mk_real_sort(ctx)), /* significand */ Z3_mk_fpa_sort(ctx, 11, 53)); c4 = Z3_mk_fpa_to_fp_real(ctx, - Z3_mk_fpa_rtz(ctx), - Z3_mk_numeral(ctx, "7.0", Z3_mk_real_sort(ctx)), - Z3_mk_fpa_sort(ctx, 11, 53)); - args3[0] = Z3_mk_eq(ctx, c1, c2); - args3[1] = Z3_mk_eq(ctx, c1, c3); - args3[2] = Z3_mk_eq(ctx, c1, c4); - c5 = Z3_mk_and(ctx, 3, args3); - - printf("c5: %s\n", Z3_ast_to_string(ctx, c5)); - Z3_solver_assert(ctx, s, c5); - check(ctx, s, Z3_L_TRUE); - Z3_solver_pop(ctx, s, 1); - + Z3_mk_fpa_rtz(ctx), + Z3_mk_numeral(ctx, "7.0", Z3_mk_real_sort(ctx)), + Z3_mk_fpa_sort(ctx, 11, 53)); + args3[0] = Z3_mk_eq(ctx, c1, c2); + args3[1] = Z3_mk_eq(ctx, c1, c3); + args3[2] = Z3_mk_eq(ctx, c1, c4); + c5 = Z3_mk_and(ctx, 3, args3); + + printf("c5: %s\n", Z3_ast_to_string(ctx, c5)); + Z3_solver_assert(ctx, s, c5); + check(ctx, s, Z3_L_TRUE); + Z3_solver_pop(ctx, s, 1); + del_solver(ctx, s); Z3_del_context(ctx); } +/** + \brief Demonstrates some basic features of model construction +*/ + +void mk_model_example() { + Z3_context ctx; + Z3_model m; + Z3_sort intSort; + Z3_symbol aSymbol, bSymbol, cSymbol; + Z3_func_decl aFuncDecl, bFuncDecl, cFuncDecl; + Z3_ast aApp, bApp, cApp; + Z3_sort int2intArraySort; + Z3_ast zeroNumeral, oneNumeral, twoNumeral, threeNumeral, fourNumeral; + Z3_sort arrayDomain[1]; + Z3_func_decl cAsFuncDecl; + Z3_func_interp cAsFuncInterp; + Z3_ast_vector zeroArgs; + Z3_ast_vector oneArgs; + Z3_ast cFuncDeclAsArray; + Z3_string modelAsString; + + printf("\nmk_model_example\n"); + ctx = mk_context(); + // Construct empty model + m = Z3_mk_model(ctx); + Z3_model_inc_ref(ctx, m); + + // Create constants "a" and "b" + intSort = Z3_mk_int_sort(ctx); + aSymbol = Z3_mk_string_symbol(ctx, "a"); + aFuncDecl = Z3_mk_func_decl(ctx, aSymbol, + /*domain_size=*/0, + /*domain=*/NULL, + /*range=*/intSort); + aApp = Z3_mk_app(ctx, aFuncDecl, + /*num_args=*/0, + /*args=*/NULL); + bSymbol = Z3_mk_string_symbol(ctx, "b"); + bFuncDecl = Z3_mk_func_decl(ctx, bSymbol, + /*domain_size=*/0, + /*domain=*/NULL, + /*range=*/intSort); + bApp = Z3_mk_app(ctx, bFuncDecl, + /*num_args=*/0, + /*args=*/NULL); + + // Create array "c" that maps int to int. + cSymbol = Z3_mk_string_symbol(ctx, "c"); + int2intArraySort = Z3_mk_array_sort(ctx, + /*domain=*/intSort, + /*range=*/intSort); + cFuncDecl = Z3_mk_func_decl(ctx, cSymbol, + /*domain_size=*/0, + /*domain=*/NULL, + /*range=*/int2intArraySort); + cApp = Z3_mk_app(ctx, cFuncDecl, + /*num_args=*/0, + /*args=*/NULL); + + // Create numerals to be used in model + zeroNumeral = Z3_mk_int(ctx, 0, intSort); + oneNumeral = Z3_mk_int(ctx, 1, intSort); + twoNumeral = Z3_mk_int(ctx, 2, intSort); + threeNumeral = Z3_mk_int(ctx, 3, intSort); + fourNumeral = Z3_mk_int(ctx, 4, intSort); + + // Add assignments to model + // a == 1 + Z3_add_const_interp(ctx, m, aFuncDecl, oneNumeral); + // b == 2 + Z3_add_const_interp(ctx, m, bFuncDecl, twoNumeral); + + // Create a fresh function that represents + // reading from array. + arrayDomain[0] = intSort; + cAsFuncDecl = Z3_mk_fresh_func_decl(ctx, + /*prefix=*/"", + /*domain_size*/ 1, + /*domain=*/arrayDomain, + /*sort=*/intSort); + // Create function interpretation with default + // value of "0". + cAsFuncInterp = + Z3_add_func_interp(ctx, m, cAsFuncDecl, + /*default_value=*/zeroNumeral); + Z3_func_interp_inc_ref(ctx, cAsFuncInterp); + // Add [0] = 3 + zeroArgs = Z3_mk_ast_vector(ctx); + Z3_ast_vector_inc_ref(ctx, zeroArgs); + Z3_ast_vector_push(ctx, zeroArgs, zeroNumeral); + Z3_func_interp_add_entry(ctx, cAsFuncInterp, zeroArgs, threeNumeral); + // Add [1] = 4 + oneArgs = Z3_mk_ast_vector(ctx); + Z3_ast_vector_inc_ref(ctx, oneArgs); + Z3_ast_vector_push(ctx, oneArgs, oneNumeral); + Z3_func_interp_add_entry(ctx, cAsFuncInterp, oneArgs, fourNumeral); + + // Now use the `(_ as_array)` to associate + // the `cAsFuncInterp` with the `cFuncDecl` + // in the model + cFuncDeclAsArray = Z3_mk_as_array(ctx, cAsFuncDecl); + Z3_add_const_interp(ctx, m, cFuncDecl, cFuncDeclAsArray); + + // Print the model + modelAsString = Z3_model_to_string(ctx, m); + printf("Model:\n%s\n", modelAsString); + + // Check the interpretations we expect to be present + // are. + { + Z3_func_decl expectedInterpretations[3] = {aFuncDecl, bFuncDecl, cFuncDecl}; + int index; + for (index = 0; + index < sizeof(expectedInterpretations) / sizeof(Z3_func_decl); + ++index) { + Z3_func_decl d = expectedInterpretations[index]; + if (Z3_model_has_interp(ctx, m, d)) { + printf("Found interpretation for \"%s\"\n", + Z3_ast_to_string(ctx, Z3_func_decl_to_ast(ctx, d))); + } else { + printf("Missing interpretation"); + exit(1); + } + } + } + + { + // Evaluate a + b under model + Z3_ast addArgs[] = {aApp, bApp}; + Z3_ast aPlusB = Z3_mk_add(ctx, + /*num_args=*/2, + /*args=*/addArgs); + Z3_ast aPlusBEval = NULL; + Z3_bool aPlusBEvalSuccess = + Z3_model_eval(ctx, m, aPlusB, + /*model_completion=*/Z3_FALSE, &aPlusBEval); + if (aPlusBEvalSuccess != Z3_TRUE) { + printf("Failed to evaluate model\n"); + exit(1); + } + + { + int aPlusBValue = 0; + Z3_bool getAPlusBValueSuccess = + Z3_get_numeral_int(ctx, aPlusBEval, &aPlusBValue); + if (getAPlusBValueSuccess != Z3_TRUE) { + printf("Failed to get integer value for a+b\n"); + exit(1); + } + printf("Evaluated a + b = %d\n", aPlusBValue); + if (aPlusBValue != 3) { + printf("a+b did not evaluate to expected value\n"); + exit(1); + } + } + } + + { + // Evaluate c[0] + c[1] + c[2] under model + Z3_ast c0 = Z3_mk_select(ctx, cApp, zeroNumeral); + Z3_ast c1 = Z3_mk_select(ctx, cApp, oneNumeral); + Z3_ast c2 = Z3_mk_select(ctx, cApp, twoNumeral); + Z3_ast arrayAddArgs[] = {c0, c1, c2}; + Z3_ast arrayAdd = Z3_mk_add(ctx, + /*num_args=*/3, + /*args=*/arrayAddArgs); + Z3_ast arrayAddEval = NULL; + Z3_bool arrayAddEvalSuccess = + Z3_model_eval(ctx, m, arrayAdd, + /*model_completion=*/Z3_FALSE, &arrayAddEval); + if (arrayAddEvalSuccess != Z3_TRUE) { + printf("Failed to evaluate model\n"); + exit(1); + } + { + int arrayAddValue = 0; + Z3_bool getArrayAddValueSuccess = + Z3_get_numeral_int(ctx, arrayAddEval, &arrayAddValue); + if (getArrayAddValueSuccess != Z3_TRUE) { + printf("Failed to get integer value for c[0] + c[1] + c[2]\n"); + exit(1); + } + printf("Evaluated c[0] + c[1] + c[2] = %d\n", arrayAddValue); + if (arrayAddValue != 7) { + printf("c[0] + c[1] + c[2] did not evaluate to expected value\n"); + exit(1); + } + } + } + + Z3_ast_vector_dec_ref(ctx, oneArgs); + Z3_ast_vector_dec_ref(ctx, zeroArgs); + Z3_func_interp_dec_ref(ctx, cAsFuncInterp); + Z3_model_dec_ref(ctx, m); + Z3_del_context(ctx); +} + /*@}*/ /*@}*/ + + int main() { #ifdef LOG_Z3_CALLS Z3_open_log("z3.log"); @@ -2888,5 +3087,6 @@ int main() { substitute_example(); substitute_vars_example(); fpa_example(); + mk_model_example(); return 0; } diff --git a/examples/maxsat/CMakeLists.txt b/examples/maxsat/CMakeLists.txt index b48e167ea..019243ecf 100644 --- a/examples/maxsat/CMakeLists.txt +++ b/examples/maxsat/CMakeLists.txt @@ -25,6 +25,16 @@ add_executable(c_maxsat_example maxsat.c) target_include_directories(c_maxsat_example PRIVATE ${Z3_C_INCLUDE_DIRS}) target_link_libraries(c_maxsat_example PRIVATE ${Z3_LIBRARIES}) +option(FORCE_CXX_LINKER "Force linker with C++ linker" OFF) +if (FORCE_CXX_LINKER) + # This is a hack for avoiding UBSan linking errors + message(STATUS "Forcing use of C++ linker") + set_target_properties(c_maxsat_example + PROPERTIES + LINKER_LANGUAGE CXX + ) +endif() + if ("${CMAKE_SYSTEM_NAME}" MATCHES "[Ww]indows") # On Windows we need to copy the Z3 libraries # into the same directory as the executable diff --git a/scripts/mk_project.py b/scripts/mk_project.py index 923b948a6..05190f217 100644 --- a/scripts/mk_project.py +++ b/scripts/mk_project.py @@ -37,20 +37,20 @@ def init_project_def(): add_lib('nlsat_tactic', ['nlsat', 'sat_tactic', 'arith_tactics'], 'nlsat/tactic') add_lib('subpaving_tactic', ['core_tactics', 'subpaving'], 'math/subpaving/tactic') add_lib('aig_tactic', ['tactic'], 'tactic/aig') - add_lib('solver', ['model', 'tactic']) + add_lib('proofs', ['rewriter', 'util'], 'ast/proofs') + add_lib('solver', ['model', 'tactic', 'proofs']) add_lib('ackermannization', ['model', 'rewriter', 'ast', 'solver', 'tactic'], 'ackermannization') add_lib('interp', ['solver']) add_lib('cmd_context', ['solver', 'rewriter', 'interp']) add_lib('extra_cmds', ['cmd_context', 'subpaving_tactic', 'arith_tactics'], 'cmd_context/extra_cmds') add_lib('smt2parser', ['cmd_context', 'parser_util'], 'parsers/smt2') - add_lib('proof_checker', ['rewriter'], 'ast/proof_checker') add_lib('fpa', ['ast', 'util', 'rewriter', 'model'], 'ast/fpa') add_lib('pattern', ['normal_forms', 'smt2parser', 'rewriter'], 'ast/pattern') add_lib('bit_blaster', ['rewriter', 'rewriter'], 'ast/rewriter/bit_blaster') add_lib('smt_params', ['ast', 'rewriter', 'pattern', 'bit_blaster'], 'smt/params') add_lib('proto_model', ['model', 'rewriter', 'smt_params'], 'smt/proto_model') add_lib('smt', ['bit_blaster', 'macros', 'normal_forms', 'cmd_context', 'proto_model', - 'substitution', 'grobner', 'euclid', 'simplex', 'proof_checker', 'pattern', 'parser_util', 'fpa', 'lp']) + 'substitution', 'grobner', 'euclid', 'simplex', 'proofs', 'pattern', 'parser_util', 'fpa', 'lp']) add_lib('bv_tactics', ['tactic', 'bit_blaster', 'core_tactics'], 'tactic/bv') add_lib('fuzzing', ['ast'], 'test/fuzzing') add_lib('smt_tactic', ['smt'], 'smt/tactic') diff --git a/scripts/mk_util.py b/scripts/mk_util.py index 305395833..52d01e95e 100644 --- a/scripts/mk_util.py +++ b/scripts/mk_util.py @@ -72,6 +72,7 @@ IS_FREEBSD=False IS_OPENBSD=False IS_CYGWIN=False IS_CYGWIN_MINGW=False +IS_MSYS2=False VERBOSE=True DEBUG_MODE=False SHOW_CPPS = True @@ -152,6 +153,9 @@ def is_cygwin(): def is_cygwin_mingw(): return IS_CYGWIN_MINGW +def is_msys2(): + return IS_MSYS2 + def norm_path(p): return os.path.expanduser(os.path.normpath(p)) @@ -227,7 +231,7 @@ def rmf(fname): def exec_compiler_cmd(cmd): r = exec_cmd(cmd) - if is_windows() or is_cygwin_mingw(): + if is_windows() or is_cygwin_mingw() or is_cygwin() or is_msys2(): rmf('a.exe') else: rmf('a.out') @@ -606,6 +610,13 @@ elif os.name == 'posix': IS_CYGWIN=True if (CC != None and "mingw" in CC): IS_CYGWIN_MINGW=True + elif os.uname()[0].startswith('MSYS_NT'): + IS_MSYS2=True + if os.uname()[4] == 'x86_64': + LINUX_X64=True + else: + LINUX_X64=False + def display_help(exit_code): print("mk_make.py: Z3 Makefile generator\n") @@ -1229,7 +1240,7 @@ def get_so_ext(): sysname = os.uname()[0] if sysname == 'Darwin': return 'dylib' - elif sysname == 'Linux' or sysname == 'FreeBSD' or sysname == 'OpenBSD': + elif sysname == 'Linux' or sysname == 'FreeBSD' or sysname == 'OpenBSD' or sysname.startswith('MSYS_NT'): return 'so' elif sysname == 'CYGWIN': return 'dll' @@ -1783,6 +1794,8 @@ class JavaDLLComponent(Component): t = t.replace('PLATFORM', 'openbsd') elif IS_CYGWIN: t = t.replace('PLATFORM', 'cygwin') + elif IS_MSYS2: + t = t.replace('PLATFORM', 'win32') else: t = t.replace('PLATFORM', 'win32') out.write(t) @@ -2446,7 +2459,7 @@ def mk_config(): if sysname == 'Darwin': SO_EXT = '.dylib' SLIBFLAGS = '-dynamiclib' - elif sysname == 'Linux': + elif sysname == 'Linux' or sysname.startswith('MSYS_NT'): CXXFLAGS = '%s -D_LINUX_' % CXXFLAGS OS_DEFINES = '-D_LINUX_' SO_EXT = '.so' @@ -2466,10 +2479,10 @@ def mk_config(): SO_EXT = '.so' SLIBFLAGS = '-shared' elif sysname[:6] == 'CYGWIN': - CXXFLAGS = '%s -D_CYGWIN' % CXXFLAGS + CXXFLAGS = '%s -D_CYGWIN' % CXXFLAGS OS_DEFINES = '-D_CYGWIN' - SO_EXT = '.dll' - SLIBFLAGS = '-shared' + SO_EXT = '.dll' + SLIBFLAGS = '-shared' else: raise MKException('Unsupported platform: %s' % sysname) if is64(): diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt index 33dc34471..5961b2a65 100644 --- a/src/CMakeLists.txt +++ b/src/CMakeLists.txt @@ -67,7 +67,7 @@ add_subdirectory(interp) add_subdirectory(cmd_context) add_subdirectory(cmd_context/extra_cmds) add_subdirectory(parsers/smt2) -add_subdirectory(ast/proof_checker) +add_subdirectory(ast/proofs) add_subdirectory(ast/fpa) add_subdirectory(ast/macros) add_subdirectory(ast/pattern) diff --git a/src/api/api_array.cpp b/src/api/api_array.cpp index a5916e987..5e6764dff 100644 --- a/src/api/api_array.cpp +++ b/src/api/api_array.cpp @@ -34,6 +34,19 @@ extern "C" { Z3_CATCH_RETURN(0); } + Z3_sort Z3_API Z3_mk_array_sort_n(Z3_context c, unsigned n, Z3_sort const* domain, Z3_sort range) { + Z3_TRY; + LOG_Z3_mk_array_sort_n(c, n, domain, range); + RESET_ERROR_CODE(); + vector params; + for (unsigned i = 0; i < n; ++i) params.push_back(parameter(to_sort(domain[i]))); + params.push_back(parameter(to_sort(range))); + sort * ty = mk_c(c)->m().mk_sort(mk_c(c)->get_array_fid(), ARRAY_SORT, params.size(), params.c_ptr()); + mk_c(c)->save_ast_trail(ty); + RETURN_Z3(of_sort(ty)); + Z3_CATCH_RETURN(0); + } + Z3_ast Z3_API Z3_mk_select(Z3_context c, Z3_ast a, Z3_ast i) { Z3_TRY; LOG_Z3_mk_select(c, a, i); @@ -57,6 +70,35 @@ extern "C" { Z3_CATCH_RETURN(0); } + Z3_ast Z3_API Z3_mk_select_n(Z3_context c, Z3_ast a, unsigned n, Z3_ast const* idxs) { + Z3_TRY; + LOG_Z3_mk_select_n(c, a, n, idxs); + RESET_ERROR_CODE(); + ast_manager & m = mk_c(c)->m(); + expr * _a = to_expr(a); + // expr * _i = to_expr(i); + sort * a_ty = m.get_sort(_a); + // sort * i_ty = m.get_sort(_i); + if (a_ty->get_family_id() != mk_c(c)->get_array_fid()) { + SET_ERROR_CODE(Z3_SORT_ERROR); + RETURN_Z3(0); + } + ptr_vector domain; + ptr_vector args; + args.push_back(_a); + domain.push_back(a_ty); + for (unsigned i = 0; i < n; ++i) { + args.push_back(to_expr(idxs[i])); + domain.push_back(m.get_sort(to_expr(idxs[i]))); + } + func_decl * d = m.mk_func_decl(mk_c(c)->get_array_fid(), OP_SELECT, 2, a_ty->get_parameters(), domain.size(), domain.c_ptr()); + app * r = m.mk_app(d, args.size(), args.c_ptr()); + mk_c(c)->save_ast_trail(r); + check_sorts(c, r); + RETURN_Z3(of_ast(r)); + Z3_CATCH_RETURN(0); + } + Z3_ast Z3_API Z3_mk_store(Z3_context c, Z3_ast a, Z3_ast i, Z3_ast v) { Z3_TRY; LOG_Z3_mk_store(c, a, i, v); @@ -82,6 +124,37 @@ extern "C" { Z3_CATCH_RETURN(0); } + Z3_ast Z3_API Z3_mk_store_n(Z3_context c, Z3_ast a, unsigned n, Z3_ast const* idxs, Z3_ast v) { + Z3_TRY; + LOG_Z3_mk_store_n(c, a, n, idxs, v); + RESET_ERROR_CODE(); + ast_manager & m = mk_c(c)->m(); + expr * _a = to_expr(a); + expr * _v = to_expr(v); + sort * a_ty = m.get_sort(_a); + sort * v_ty = m.get_sort(_v); + if (a_ty->get_family_id() != mk_c(c)->get_array_fid()) { + SET_ERROR_CODE(Z3_SORT_ERROR); + RETURN_Z3(0); + } + ptr_vector domain; + ptr_vector args; + args.push_back(_a); + domain.push_back(a_ty); + for (unsigned i = 0; i < n; ++i) { + args.push_back(to_expr(idxs[i])); + domain.push_back(m.get_sort(to_expr(idxs[i]))); + } + args.push_back(_v); + domain.push_back(v_ty); + func_decl * d = m.mk_func_decl(mk_c(c)->get_array_fid(), OP_STORE, 2, a_ty->get_parameters(), domain.size(), domain.c_ptr()); + app * r = m.mk_app(d, args.size(), args.c_ptr()); + mk_c(c)->save_ast_trail(r); + check_sorts(c, r); + RETURN_Z3(of_ast(r)); + Z3_CATCH_RETURN(0); + } + Z3_ast Z3_API Z3_mk_map(Z3_context c, Z3_func_decl f, unsigned n, Z3_ast const* args) { Z3_TRY; LOG_Z3_mk_map(c, f, n, args); @@ -188,6 +261,18 @@ extern "C" { MK_BINARY(Z3_mk_set_subset, mk_c(c)->get_array_fid(), OP_SET_SUBSET, SKIP); MK_BINARY(Z3_mk_array_ext, mk_c(c)->get_array_fid(), OP_ARRAY_EXT, SKIP); + Z3_ast Z3_API Z3_mk_as_array(Z3_context c, Z3_func_decl f) { + Z3_TRY; + LOG_Z3_mk_as_array(c, f); + RESET_ERROR_CODE(); + ast_manager & m = mk_c(c)->m(); + array_util a(m); + app * r = a.mk_as_array(to_func_decl(f)); + mk_c(c)->save_ast_trail(r); + return of_ast(r); + Z3_CATCH_RETURN(0); + } + Z3_ast Z3_mk_set_member(Z3_context c, Z3_ast elem, Z3_ast set) { return Z3_mk_select(c, set, elem); } @@ -222,7 +307,8 @@ extern "C" { CHECK_VALID_AST(t, 0); if (to_sort(t)->get_family_id() == mk_c(c)->get_array_fid() && to_sort(t)->get_decl_kind() == ARRAY_SORT) { - Z3_sort r = reinterpret_cast(to_sort(t)->get_parameter(1).get_ast()); + unsigned n = to_sort(t)->get_num_parameters(); + Z3_sort r = reinterpret_cast(to_sort(t)->get_parameter(n-1).get_ast()); RETURN_Z3(r); } SET_ERROR_CODE(Z3_INVALID_ARG); diff --git a/src/api/api_interp.cpp b/src/api/api_interp.cpp index b60a8c839..0889eee0d 100644 --- a/src/api/api_interp.cpp +++ b/src/api/api_interp.cpp @@ -249,7 +249,7 @@ extern "C" { params_ref _p; _p.set_bool("proof", true); // this is currently useless - scoped_proof_mode spm(mk_c(c)->m(), PGM_FINE); + scoped_proof_mode spm(mk_c(c)->m(), PGM_ENABLED); scoped_ptr sf = mk_smt_solver_factory(); scoped_ptr m_solver((*sf)(mk_c(c)->m(), _p, true, true, true, ::symbol::null)); m_solver.get()->updt_params(_p); // why do we have to do this? diff --git a/src/api/api_model.cpp b/src/api/api_model.cpp index 5c6023cfc..3e7dfa061 100644 --- a/src/api/api_model.cpp +++ b/src/api/api_model.cpp @@ -255,8 +255,13 @@ extern "C" { LOG_Z3_add_const_interp(c, m, f, a); RESET_ERROR_CODE(); func_decl* d = to_func_decl(f); - model* mdl = to_model_ref(m); - mdl->register_decl(d, to_expr(a)); + if (d->get_arity() != 0) { + SET_ERROR_CODE(Z3_INVALID_ARG); + } + else { + model* mdl = to_model_ref(m); + mdl->register_decl(d, to_expr(a)); + } Z3_CATCH; } diff --git a/src/api/api_opt.cpp b/src/api/api_opt.cpp index e07fa5b2d..a70f3f660 100644 --- a/src/api/api_opt.cpp +++ b/src/api/api_opt.cpp @@ -288,15 +288,16 @@ extern "C" { Z3_optimize opt, std::istream& s) { ast_manager& m = mk_c(c)->m(); - cmd_context ctx(false, &m); - install_opt_cmds(ctx, to_optimize_ptr(opt)); - ctx.set_ignore_check(true); - if (!parse_smt2_commands(ctx, s)) { + scoped_ptr ctx = alloc(cmd_context, false, &m); + install_opt_cmds(*ctx.get(), to_optimize_ptr(opt)); + ctx->set_ignore_check(true); + if (!parse_smt2_commands(*ctx.get(), s)) { + ctx = nullptr; SET_ERROR_CODE(Z3_PARSER_ERROR); return; } - ptr_vector::const_iterator it = ctx.begin_assertions(); - ptr_vector::const_iterator end = ctx.end_assertions(); + ptr_vector::const_iterator it = ctx->begin_assertions(); + ptr_vector::const_iterator end = ctx->end_assertions(); for (; it != end; ++it) { to_optimize_ptr(opt)->add_hard_constraint(*it); } @@ -325,9 +326,6 @@ extern "C" { std::ostringstream strm; strm << "Could not open file " << s; throw default_exception(strm.str()); - - SET_ERROR_CODE(Z3_PARSER_ERROR); - return; } Z3_optimize_from_stream(c, d, is); Z3_CATCH; diff --git a/src/api/api_parsers.cpp b/src/api/api_parsers.cpp index 7641bd7c6..1b8927d75 100644 --- a/src/api/api_parsers.cpp +++ b/src/api/api_parsers.cpp @@ -57,7 +57,7 @@ extern "C" { Z3_func_decl const decls[]) { Z3_TRY; LOG_Z3_parse_smtlib_string(c, str, num_sorts, sort_names, sorts, num_decls, decl_names, decls); - std::ostringstream* outs = alloc(std::ostringstream); + scoped_ptr outs = alloc(std::ostringstream); bool ok = false; RESET_ERROR_CODE(); @@ -70,7 +70,7 @@ extern "C" { ok = false; } mk_c(c)->m_smtlib_error_buffer = outs->str(); - dealloc(outs); + outs = nullptr; if (!ok) { mk_c(c)->reset_parser(); SET_ERROR_CODE(Z3_PARSER_ERROR); @@ -90,7 +90,7 @@ extern "C" { LOG_Z3_parse_smtlib_file(c, file_name, num_sorts, sort_names, types, num_decls, decl_names, decls); bool ok = false; RESET_ERROR_CODE(); - std::ostringstream* outs = alloc(std::ostringstream); + scoped_ptr outs = alloc(std::ostringstream); init_smtlib_parser(c, num_sorts, sort_names, types, num_decls, decl_names, decls); mk_c(c)->m_smtlib_parser->set_error_stream(*outs); try { @@ -100,7 +100,7 @@ extern "C" { ok = false; } mk_c(c)->m_smtlib_error_buffer = outs->str(); - dealloc(outs); + outs = nullptr; if (!ok) { mk_c(c)->reset_parser(); SET_ERROR_CODE(Z3_PARSER_ERROR); @@ -263,24 +263,24 @@ extern "C" { Z3_symbol const decl_names[], Z3_func_decl const decls[]) { Z3_TRY; - cmd_context ctx(false, &(mk_c(c)->m())); - ctx.set_ignore_check(true); + scoped_ptr ctx = alloc(cmd_context, false, &(mk_c(c)->m())); + ctx->set_ignore_check(true); Z3_ast_vector_ref * v = alloc(Z3_ast_vector_ref, *mk_c(c), mk_c(c)->m()); - mk_c(c)->save_object(v); - + mk_c(c)->save_object(v); for (unsigned i = 0; i < num_decls; ++i) { - ctx.insert(to_symbol(decl_names[i]), to_func_decl(decls[i])); + ctx->insert(to_symbol(decl_names[i]), to_func_decl(decls[i])); } for (unsigned i = 0; i < num_sorts; ++i) { - psort* ps = ctx.pm().mk_psort_cnst(to_sort(sorts[i])); - ctx.insert(ctx.pm().mk_psort_user_decl(0, to_symbol(sort_names[i]), ps)); + psort* ps = ctx->pm().mk_psort_cnst(to_sort(sorts[i])); + ctx->insert(ctx->pm().mk_psort_user_decl(0, to_symbol(sort_names[i]), ps)); } - if (!parse_smt2_commands(ctx, is)) { + if (!parse_smt2_commands(*ctx.get(), is)) { + ctx = nullptr; SET_ERROR_CODE(Z3_PARSER_ERROR); return of_ast_vector(v); } - ptr_vector::const_iterator it = ctx.begin_assertions(); - ptr_vector::const_iterator end = ctx.end_assertions(); + ptr_vector::const_iterator it = ctx->begin_assertions(); + ptr_vector::const_iterator end = ctx->end_assertions(); for (; it != end; ++it) { v->m_ast_vector.push_back(*it); } diff --git a/src/api/api_quant.cpp b/src/api/api_quant.cpp index d64768b3b..e56505e6d 100644 --- a/src/api/api_quant.cpp +++ b/src/api/api_quant.cpp @@ -63,9 +63,11 @@ extern "C" { RESET_ERROR_CODE(); if (!mk_c(c)->m().is_bool(to_expr(body))) { SET_ERROR_CODE(Z3_SORT_ERROR); + return nullptr; } if (num_patterns > 0 && num_no_patterns > 0) { SET_ERROR_CODE(Z3_INVALID_USAGE); + return nullptr; } expr * const* ps = reinterpret_cast(patterns); expr * const* no_ps = reinterpret_cast(no_patterns); @@ -76,7 +78,7 @@ extern "C" { for (unsigned i = 0; i < num_patterns; i++) { if (!v(num_decls, ps[i], 0, 0)) { SET_ERROR_CODE(Z3_INVALID_PATTERN); - return 0; + return nullptr; } } } diff --git a/src/api/api_solver.cpp b/src/api/api_solver.cpp index f0a8c47f6..9c80a6622 100644 --- a/src/api/api_solver.cpp +++ b/src/api/api_solver.cpp @@ -452,6 +452,7 @@ extern "C" { unsigned sz = __assumptions.size(); for (unsigned i = 0; i < sz; ++i) { if (!is_expr(__assumptions[i])) { + _assumptions.finalize(); _consequences.finalize(); _variables.finalize(); SET_ERROR_CODE(Z3_INVALID_USAGE); return Z3_L_UNDEF; } @@ -461,6 +462,7 @@ extern "C" { sz = __variables.size(); for (unsigned i = 0; i < sz; ++i) { if (!is_expr(__variables[i])) { + _assumptions.finalize(); _consequences.finalize(); _variables.finalize(); SET_ERROR_CODE(Z3_INVALID_USAGE); return Z3_L_UNDEF; } @@ -481,6 +483,7 @@ extern "C" { } catch (z3_exception & ex) { to_solver_ref(s)->set_reason_unknown(eh); + _assumptions.finalize(); _consequences.finalize(); _variables.finalize(); mk_c(c)->handle_exception(ex); return Z3_L_UNDEF; } diff --git a/src/api/c++/z3++.h b/src/api/c++/z3++.h index eb38c5fa5..7015f6c08 100644 --- a/src/api/c++/z3++.h +++ b/src/api/c++/z3++.h @@ -140,18 +140,17 @@ namespace z3 { class context { bool m_enable_exceptions; Z3_context m_ctx; - static void Z3_API error_handler(Z3_context /*c*/, Z3_error_code /*e*/) { /* do nothing */ } void init(config & c) { m_ctx = Z3_mk_context_rc(c); m_enable_exceptions = true; - Z3_set_error_handler(m_ctx, error_handler); + Z3_set_error_handler(m_ctx, 0); Z3_set_ast_print_mode(m_ctx, Z3_PRINT_SMTLIB2_COMPLIANT); } void init_interp(config & c) { m_ctx = Z3_mk_interpolation_context(c); m_enable_exceptions = true; - Z3_set_error_handler(m_ctx, error_handler); + Z3_set_error_handler(m_ctx, 0); Z3_set_ast_print_mode(m_ctx, Z3_PRINT_SMTLIB2_COMPLIANT); } @@ -251,6 +250,8 @@ namespace z3 { Example: Given a context \c c, c.array_sort(c.int_sort(), c.bool_sort()) is an array sort from integer to Boolean. */ sort array_sort(sort d, sort r); + sort array_sort(sort_vector const& d, sort r); + /** \brief Return an enumeration sort: enum_names[0], ..., enum_names[n-1]. \c cs and \c ts are output parameters. The method stores in \c cs the constants corresponding to the enumerated elements, @@ -2328,6 +2329,11 @@ namespace z3 { inline sort context::re_sort(sort& s) { Z3_sort r = Z3_mk_re_sort(m_ctx, s); check_error(); return sort(*this, r); } inline sort context::array_sort(sort d, sort r) { Z3_sort s = Z3_mk_array_sort(m_ctx, d, r); check_error(); return sort(*this, s); } + inline sort context::array_sort(sort_vector const& d, sort r) { + array dom(d); + Z3_sort s = Z3_mk_array_sort_n(m_ctx, dom.size(), dom.ptr(), r); check_error(); return sort(*this, s); + } + inline sort context::enumeration_sort(char const * name, unsigned n, char const * const * enum_names, func_decl_vector & cs, func_decl_vector & ts) { array _enum_names(n); for (unsigned i = 0; i < n; i++) { _enum_names[i] = Z3_mk_string_symbol(*this, enum_names[i]); } @@ -2574,11 +2580,32 @@ namespace z3 { a.check_error(); return expr(a.ctx(), r); } + inline expr select(expr const & a, expr_vector const & i) { + check_context(a, i); + array idxs(i); + Z3_ast r = Z3_mk_select_n(a.ctx(), a, idxs.size(), idxs.ptr()); + a.check_error(); + return expr(a.ctx(), r); + } + inline expr store(expr const & a, int i, expr const & v) { return store(a, a.ctx().num_val(i, a.get_sort().array_domain()), v); } inline expr store(expr const & a, expr i, int v) { return store(a, i, a.ctx().num_val(v, a.get_sort().array_range())); } inline expr store(expr const & a, int i, int v) { return store(a, a.ctx().num_val(i, a.get_sort().array_domain()), a.ctx().num_val(v, a.get_sort().array_range())); } + inline expr store(expr const & a, expr_vector const & i, expr const & v) { + check_context(a, i); check_context(a, v); + array idxs(i); + Z3_ast r = Z3_mk_store_n(a.ctx(), a, idxs.size(), idxs.ptr(), v); + a.check_error(); + return expr(a.ctx(), r); + } + + inline expr as_array(func_decl & f) { + Z3_ast r = Z3_mk_as_array(f.ctx(), f); + f.check_error(); + return expr(f.ctx(), r); + } #define MK_EXPR1(_fn, _arg) \ Z3_ast r = _fn(_arg.ctx(), _arg); \ diff --git a/src/api/dotnet/ArraySort.cs b/src/api/dotnet/ArraySort.cs index ddd27785c..47a73ae1f 100644 --- a/src/api/dotnet/ArraySort.cs +++ b/src/api/dotnet/ArraySort.cs @@ -63,6 +63,13 @@ namespace Microsoft.Z3 Contract.Requires(domain != null); Contract.Requires(range != null); } + internal ArraySort(Context ctx, Sort[] domain, Sort range) + : base(ctx, Native.Z3_mk_array_sort_n(ctx.nCtx, (uint)domain.Length, AST.ArrayToNative(domain), range.NativeObject)) + { + Contract.Requires(ctx != null); + Contract.Requires(domain != null); + Contract.Requires(range != null); + } #endregion }; diff --git a/src/api/dotnet/Context.cs b/src/api/dotnet/Context.cs index 2bf1c44c5..38ab101b4 100644 --- a/src/api/dotnet/Context.cs +++ b/src/api/dotnet/Context.cs @@ -274,6 +274,20 @@ namespace Microsoft.Z3 return new ArraySort(this, domain, range); } + /// + /// Create a new n-ary array sort. + /// + public ArraySort MkArraySort(Sort[] domain, Sort range) + { + Contract.Requires(domain != null); + Contract.Requires(range != null); + Contract.Ensures(Contract.Result() != null); + + CheckContextMatch(domain); + CheckContextMatch(range); + return new ArraySort(this, domain, range); + } + /// /// Create a new tuple sort. /// @@ -2113,6 +2127,7 @@ namespace Microsoft.Z3 return (ArrayExpr)MkConst(MkSymbol(name), MkArraySort(domain, range)); } + /// /// Array read. /// @@ -2123,8 +2138,8 @@ namespace Microsoft.Z3 /// The node a must have an array sort [domain -> range], /// and i must have the sort domain. /// The sort of the result is range. - /// - /// + /// + /// /// public Expr MkSelect(ArrayExpr a, Expr i) { @@ -2137,6 +2152,30 @@ namespace Microsoft.Z3 return Expr.Create(this, Native.Z3_mk_select(nCtx, a.NativeObject, i.NativeObject)); } + /// + /// Array read. + /// + /// + /// The argument a is the array and args are the indices + /// of the array that gets read. + /// + /// The node a must have an array sort [domain1,..,domaink -> range], + /// and args must have the sort domain1,..,domaink. + /// The sort of the result is range. + /// + /// + /// + public Expr MkSelect(ArrayExpr a, params Expr[] args) + { + Contract.Requires(a != null); + Contract.Requires(args != null && Contract.ForAll(args, n => n != null)); + Contract.Ensures(Contract.Result() != null); + + CheckContextMatch(a); + CheckContextMatch(args); + return Expr.Create(this, Native.Z3_mk_select_n(nCtx, a.NativeObject, AST.ArrayLength(args), AST.ArrayToNative(args))); + } + /// /// Array update. /// @@ -2151,8 +2190,9 @@ namespace Microsoft.Z3 /// on all indices except for i, where it maps to v /// (and the select of a with /// respect to i may be a different value). - /// - /// + /// + /// + /// /// public ArrayExpr MkStore(ArrayExpr a, Expr i, Expr v) { @@ -2167,14 +2207,45 @@ namespace Microsoft.Z3 return new ArrayExpr(this, Native.Z3_mk_store(nCtx, a.NativeObject, i.NativeObject, v.NativeObject)); } + /// + /// Array update. + /// + /// + /// The node a must have an array sort [domain1,..,domaink -> range], + /// args must have sort domain1,..,domaink, + /// v must have sort range. The sort of the result is [domain -> range]. + /// The semantics of this function is given by the theory of arrays described in the SMT-LIB + /// standard. See http://smtlib.org for more details. + /// The result of this function is an array that is equal to a + /// (with respect to select) + /// on all indices except for args, where it maps to v + /// (and the select of a with + /// respect to args may be a different value). + /// + /// + /// + /// + public ArrayExpr MkStore(ArrayExpr a, Expr[] args, Expr v) + { + Contract.Requires(a != null); + Contract.Requires(args != null); + Contract.Requires(v != null); + Contract.Ensures(Contract.Result() != null); + + CheckContextMatch(args); + CheckContextMatch(a); + CheckContextMatch(v); + return new ArrayExpr(this, Native.Z3_mk_store_n(nCtx, a.NativeObject, AST.ArrayLength(args), AST.ArrayToNative(args), v.NativeObject)); + } + /// /// Create a constant array. /// /// /// The resulting term is an array, such that a selecton an arbitrary index /// produces the value v. - /// - /// + /// + /// /// public ArrayExpr MkConstArray(Sort domain, Expr v) { @@ -2194,9 +2265,9 @@ namespace Microsoft.Z3 /// Eeach element of args must be of an array sort [domain_i -> range_i]. /// The function declaration f must have type range_1 .. range_n -> range. /// v must have sort range. The sort of the result is [domain_i -> range]. - /// - /// - /// + /// + /// + /// /// public ArrayExpr MkMap(FuncDecl f, params ArrayExpr[] args) { diff --git a/src/api/java/ArraySort.java b/src/api/java/ArraySort.java index 1574823d1..db4d992ed 100644 --- a/src/api/java/ArraySort.java +++ b/src/api/java/ArraySort.java @@ -56,4 +56,10 @@ public class ArraySort extends Sort super(ctx, Native.mkArraySort(ctx.nCtx(), domain.getNativeObject(), range.getNativeObject())); } + + ArraySort(Context ctx, Sort[] domains, Sort range) + { + super(ctx, Native.mkArraySortN(ctx.nCtx(), domains.length, AST.arrayToNative(domains), + range.getNativeObject())); + } }; diff --git a/src/api/java/Context.java b/src/api/java/Context.java index a0a738fdb..711327dd2 100644 --- a/src/api/java/Context.java +++ b/src/api/java/Context.java @@ -224,6 +224,17 @@ public class Context implements AutoCloseable { return new ArraySort(this, domain, range); } + + /** + * Create a new array sort. + **/ + public ArraySort mkArraySort(Sort[] domains, Sort range) + { + checkContextMatch(domains); + checkContextMatch(range); + return new ArraySort(this, domains, range); + } + /** * Create a new string sort **/ @@ -414,7 +425,7 @@ public class Context implements AutoCloseable { * that is passed in as argument is updated with value v, * the remaining fields of t are unchanged. **/ - public Expr MkUpdateField(FuncDecl field, Expr t, Expr v) + public Expr mkUpdateField(FuncDecl field, Expr t, Expr v) throws Z3Exception { return Expr.create (this, @@ -706,7 +717,7 @@ public class Context implements AutoCloseable { } /** - * Mk an expression representing {@code not(a)}. + * Create an expression representing {@code not(a)}. **/ public BoolExpr mkNot(BoolExpr a) { @@ -1679,6 +1690,28 @@ public class Context implements AutoCloseable { i.getNativeObject())); } + /** + * Array read. + * Remarks: The argument {@code a} is the array and + * {@code args} are the indices of the array that gets read. + * + * The node {@code a} must have an array sort + * {@code [domains -> range]}, and {@code args} must have the sorts + * {@code domains}. The sort of the result is {@code range}. + * + * @see #mkArraySort + * @see #mkStore + + **/ + public Expr mkSelect(ArrayExpr a, Expr[] args) + { + checkContextMatch(a); + checkContextMatch(args); + return Expr.create( + this, + Native.mkSelectN(nCtx(), a.getNativeObject(), args.length, AST.arrayToNative(args))); + } + /** * Array update. * Remarks: The node {@code a} must have an array sort @@ -1704,6 +1737,31 @@ public class Context implements AutoCloseable { i.getNativeObject(), v.getNativeObject())); } + /** + * Array update. + * Remarks: The node {@code a} must have an array sort + * {@code [domains -> range]}, {@code i} must have sort + * {@code domain}, {@code v} must have sort range. The sort of the + * result is {@code [domains -> range]}. The semantics of this function + * is given by the theory of arrays described in the SMT-LIB standard. See + * http://smtlib.org for more details. The result of this function is an + * array that is equal to {@code a} (with respect to + * {@code select}) on all indices except for {@code args}, where it + * maps to {@code v} (and the {@code select} of {@code a} + * with respect to {@code args} may be a different value). + * @see #mkArraySort + * @see #mkSelect + + **/ + public ArrayExpr mkStore(ArrayExpr a, Expr[] args, Expr v) + { + checkContextMatch(a); + checkContextMatch(args); + checkContextMatch(v); + return new ArrayExpr(this, Native.mkStoreN(nCtx(), a.getNativeObject(), + args.length, AST.arrayToNative(args), v.getNativeObject())); + } + /** * Create a constant array. * Remarks: The resulting term is an array, such @@ -2104,7 +2162,7 @@ public class Context implements AutoCloseable { /** * Create a range expression. */ - public ReExpr MkRange(SeqExpr lo, SeqExpr hi) + public ReExpr mkRange(SeqExpr lo, SeqExpr hi) { checkContextMatch(lo, hi); return (ReExpr) Expr.create(this, Native.mkReRange(nCtx(), lo.getNativeObject(), hi.getNativeObject())); diff --git a/src/api/z3_api.h b/src/api/z3_api.h index f0085f2ed..541a29b60 100644 --- a/src/api/z3_api.h +++ b/src/api/z3_api.h @@ -1881,6 +1881,17 @@ extern "C" { */ Z3_sort Z3_API Z3_mk_array_sort(Z3_context c, Z3_sort domain, Z3_sort range); + /** + \brief Create an array type with N arguments + + \sa Z3_mk_select_n + \sa Z3_mk_store_n + + def_API('Z3_mk_array_sort_n', SORT, (_in(CONTEXT), _in(UINT), _in_array(1, SORT), _in(SORT))) + */ + Z3_sort Z3_API Z3_mk_array_sort_n(Z3_context c, unsigned n, Z3_sort const * domain, Z3_sort range); + + /** \brief Create a tuple type. @@ -2973,6 +2984,15 @@ extern "C" { */ Z3_ast Z3_API Z3_mk_select(Z3_context c, Z3_ast a, Z3_ast i); + /** + \brief n-ary Array read. + The argument \c a is the array and \c idxs are the indices of the array that gets read. + + def_API('Z3_mk_select_n', AST, (_in(CONTEXT), _in(AST), _in(UINT), _in_array(2, AST))) + + */ + Z3_ast Z3_API Z3_mk_select_n(Z3_context c, Z3_ast a, unsigned n, Z3_ast const* idxs); + /** \brief Array update. @@ -2991,6 +3011,14 @@ extern "C" { */ Z3_ast Z3_API Z3_mk_store(Z3_context c, Z3_ast a, Z3_ast i, Z3_ast v); + /** + \brief n-ary Array update. + + def_API('Z3_mk_store_n', AST, (_in(CONTEXT), _in(AST), _in(UINT), _in_array(2, AST), _in(AST))) + + */ + Z3_ast Z3_API Z3_mk_store_n(Z3_context c, Z3_ast a, unsigned n, Z3_ast const* idxs, Z3_ast v); + /** \brief Create the constant array. @@ -3031,6 +3059,15 @@ extern "C" { def_API('Z3_mk_array_default', AST, (_in(CONTEXT), _in(AST))) */ Z3_ast Z3_API Z3_mk_array_default(Z3_context c, Z3_ast array); + + /** + \brief Create array with the same interpretation as a function. + The array satisfies the property (f x) = (select (_ as-array f) x) + for every argument x. + + def_API('Z3_mk_as_array', AST, (_in(CONTEXT), _in(FUNC_DECL))) + */ + Z3_ast Z3_API Z3_mk_as_array(Z3_context c, Z3_func_decl f); /*@}*/ /** @name Sets */ @@ -3854,6 +3891,7 @@ extern "C" { /** \brief Return the domain of the given array sort. + In the case of a multi-dimensional array, this function returns the sort of the first dimension. \pre Z3_get_sort_kind(c, t) == Z3_ARRAY_SORT diff --git a/src/ast/CMakeLists.txt b/src/ast/CMakeLists.txt index 0a14d9473..4dcdd2a35 100644 --- a/src/ast/CMakeLists.txt +++ b/src/ast/CMakeLists.txt @@ -10,6 +10,7 @@ z3_add_component(ast ast_printer.cpp ast_smt2_pp.cpp ast_smt_pp.cpp + ast_pp_dot.cpp ast_translation.cpp ast_util.cpp bv_decl_plugin.cpp diff --git a/src/ast/array_decl_plugin.cpp b/src/ast/array_decl_plugin.cpp index cb016e263..0cc4f6031 100644 --- a/src/ast/array_decl_plugin.cpp +++ b/src/ast/array_decl_plugin.cpp @@ -242,7 +242,9 @@ func_decl* array_decl_plugin::mk_select(unsigned arity, sort * const * domain) { parameter const* parameters = s->get_parameters(); if (num_parameters != arity) { - m_manager->raise_exception("select requires as many arguments as the size of the domain"); + std::stringstream strm; + strm << "select requires " << num_parameters << " arguments, but was provided with " << arity << " arguments"; + m_manager->raise_exception(strm.str().c_str()); return 0; } ptr_buffer new_domain; // we need this because of coercions. @@ -314,7 +316,7 @@ func_decl * array_decl_plugin::mk_array_ext(unsigned arity, sort * const * domai return 0; } sort * r = to_sort(s->get_parameter(i).get_ast()); - parameter param(s); + parameter param(i); return m_manager->mk_func_decl(m_array_ext_sym, arity, domain, r, func_decl_info(m_family_id, OP_ARRAY_EXT, 1, ¶m)); } @@ -592,3 +594,9 @@ sort * array_util::mk_array_sort(unsigned arity, sort* const* domain, sort* rang params.push_back(parameter(range)); return m_manager.mk_sort(m_fid, ARRAY_SORT, params.size(), params.c_ptr()); } + +func_decl* array_util::mk_array_ext(sort *domain, unsigned i) { + sort * domains[2] = { domain, domain }; + parameter p(i); + return m_manager.mk_func_decl(m_fid, OP_ARRAY_EXT, 1, &p, 2, domains); +} diff --git a/src/ast/array_decl_plugin.h b/src/ast/array_decl_plugin.h index 0704fe56a..911bb3f27 100644 --- a/src/ast/array_decl_plugin.h +++ b/src/ast/array_decl_plugin.h @@ -143,6 +143,7 @@ public: bool is_const(expr* n) const { return is_app_of(n, m_fid, OP_CONST_ARRAY); } bool is_map(expr* n) const { return is_app_of(n, m_fid, OP_ARRAY_MAP); } bool is_as_array(expr * n) const { return is_app_of(n, m_fid, OP_AS_ARRAY); } + bool is_as_array(expr * n, func_decl*& f) const { return is_as_array(n) && (f = get_as_array_func_decl(n), true); } bool is_select(func_decl* f) const { return is_decl_of(f, m_fid, OP_SELECT); } bool is_store(func_decl* f) const { return is_decl_of(f, m_fid, OP_STORE); } bool is_const(func_decl* f) const { return is_decl_of(f, m_fid, OP_CONST_ARRAY); } @@ -182,13 +183,15 @@ public: return mk_const_array(s, m_manager.mk_true()); } + func_decl * mk_array_ext(sort* domain, unsigned i); + sort * mk_array_sort(sort* dom, sort* range) { return mk_array_sort(1, &dom, range); } sort * mk_array_sort(unsigned arity, sort* const* domain, sort* range); - app * mk_as_array(sort * s, func_decl * f) { + app * mk_as_array(func_decl * f) { parameter param(f); - return m_manager.mk_app(m_fid, OP_AS_ARRAY, 1, ¶m, 0, 0, s); + return m_manager.mk_app(m_fid, OP_AS_ARRAY, 1, ¶m, 0, 0, 0); } }; diff --git a/src/ast/ast.cpp b/src/ast/ast.cpp index c8de22899..a6c4ab8fc 100644 --- a/src/ast/ast.cpp +++ b/src/ast/ast.cpp @@ -768,7 +768,7 @@ func_decl * basic_decl_plugin::mk_compressed_proof_decl(char const * name, basic func_decl * basic_decl_plugin::mk_proof_decl(char const * name, basic_op_kind k, unsigned num_parents, ptr_vector & cache) { if (num_parents >= cache.size()) { - cache.resize(num_parents+1, 0); + cache.resize(num_parents+1); } if (cache[num_parents] == 0) { cache[num_parents] = mk_proof_decl(name, k, num_parents); @@ -805,7 +805,6 @@ func_decl * basic_decl_plugin::mk_proof_decl(char const* name, basic_op_kind k, } func_decl * basic_decl_plugin::mk_proof_decl(basic_op_kind k, unsigned num_parents) { - SASSERT(k == PR_UNDEF || m_manager->proofs_enabled()); switch (static_cast(k)) { // // A description of the semantics of the proof @@ -2631,7 +2630,7 @@ bool ast_manager::is_fully_interp(sort * s) const { // ----------------------------------- proof * ast_manager::mk_proof(family_id fid, decl_kind k, unsigned num_args, expr * const * args) { - if (m_proof_mode == PGM_DISABLED) + if (proofs_disabled()) return m_undef_proof; return mk_app(fid, k, num_args, args); } @@ -2667,8 +2666,7 @@ proof * ast_manager::mk_goal(expr * f) { } proof * ast_manager::mk_modus_ponens(proof * p1, proof * p2) { - if (m_proof_mode == PGM_DISABLED) - return m_undef_proof; + if (!p1 || !p2) return nullptr; SASSERT(has_fact(p1)); SASSERT(has_fact(p2)); CTRACE("mk_modus_ponens", !(is_implies(get_fact(p2)) || is_iff(get_fact(p2)) || is_oeq(get_fact(p2))), @@ -2689,14 +2687,10 @@ proof * ast_manager::mk_modus_ponens(proof * p1, proof * p2) { } proof * ast_manager::mk_reflexivity(expr * e) { - if (m_proof_mode == PGM_DISABLED) - return m_undef_proof; return mk_app(m_basic_family_id, PR_REFLEXIVITY, mk_eq(e, e)); } proof * ast_manager::mk_oeq_reflexivity(expr * e) { - if (m_proof_mode == PGM_DISABLED) - return m_undef_proof; return mk_app(m_basic_family_id, PR_REFLEXIVITY, mk_oeq(e, e)); } @@ -2710,8 +2704,7 @@ proof * ast_manager::mk_commutativity(app * f) { \brief Given a proof of p, return a proof of (p <=> true) */ proof * ast_manager::mk_iff_true(proof * pr) { - if (m_proof_mode == PGM_DISABLED) - return m_undef_proof; + if (!pr) return pr; SASSERT(has_fact(pr)); SASSERT(is_bool(get_fact(pr))); return mk_app(m_basic_family_id, PR_IFF_TRUE, pr, mk_iff(get_fact(pr), mk_true())); @@ -2721,8 +2714,7 @@ proof * ast_manager::mk_iff_true(proof * pr) { \brief Given a proof of (not p), return a proof of (p <=> false) */ proof * ast_manager::mk_iff_false(proof * pr) { - if (m_proof_mode == PGM_DISABLED) - return m_undef_proof; + if (!pr) return pr; SASSERT(has_fact(pr)); SASSERT(is_not(get_fact(pr))); expr * p = to_app(get_fact(pr))->get_arg(0); @@ -2730,10 +2722,7 @@ proof * ast_manager::mk_iff_false(proof * pr) { } proof * ast_manager::mk_symmetry(proof * p) { - if (m_proof_mode == PGM_DISABLED) - return m_undef_proof; - if (!p) - return p; + if (!p) return p; if (is_reflexivity(p)) return p; if (is_symmetry(p)) @@ -2746,8 +2735,6 @@ proof * ast_manager::mk_symmetry(proof * p) { } proof * ast_manager::mk_transitivity(proof * p1, proof * p2) { - if (m_proof_mode == PGM_DISABLED) - return m_undef_proof; if (!p1) return p2; if (!p2) @@ -2792,8 +2779,6 @@ proof * ast_manager::mk_transitivity(proof * p1, proof * p2, proof * p3, proof * } proof * ast_manager::mk_transitivity(unsigned num_proofs, proof * const * proofs) { - if (m_proof_mode == PGM_DISABLED) - return m_undef_proof; SASSERT(num_proofs > 0); proof * r = proofs[0]; for (unsigned i = 1; i < num_proofs; i++) @@ -2802,11 +2787,8 @@ proof * ast_manager::mk_transitivity(unsigned num_proofs, proof * const * proofs } proof * ast_manager::mk_transitivity(unsigned num_proofs, proof * const * proofs, expr * n1, expr * n2) { - if (m_proof_mode == PGM_DISABLED) - return m_undef_proof; - if (fine_grain_proofs()) - return mk_transitivity(num_proofs, proofs); - SASSERT(num_proofs > 0); + if (num_proofs == 0) + return nullptr; if (num_proofs == 1) return proofs[0]; DEBUG_CODE({ @@ -2822,8 +2804,6 @@ proof * ast_manager::mk_transitivity(unsigned num_proofs, proof * const * proofs } proof * ast_manager::mk_monotonicity(func_decl * R, app * f1, app * f2, unsigned num_proofs, proof * const * proofs) { - if (m_proof_mode == PGM_DISABLED) - return m_undef_proof; SASSERT(f1->get_num_args() == f2->get_num_args()); SASSERT(f1->get_decl() == f2->get_decl()); ptr_buffer args; @@ -2833,8 +2813,6 @@ proof * ast_manager::mk_monotonicity(func_decl * R, app * f1, app * f2, unsigned } proof * ast_manager::mk_congruence(app * f1, app * f2, unsigned num_proofs, proof * const * proofs) { - if (m_proof_mode == PGM_DISABLED) - return m_undef_proof; SASSERT(get_sort(f1) == get_sort(f2)); sort * s = get_sort(f1); sort * d[2] = { s, s }; @@ -2842,8 +2820,6 @@ proof * ast_manager::mk_congruence(app * f1, app * f2, unsigned num_proofs, proo } proof * ast_manager::mk_oeq_congruence(app * f1, app * f2, unsigned num_proofs, proof * const * proofs) { - if (m_proof_mode == PGM_DISABLED) - return m_undef_proof; SASSERT(get_sort(f1) == get_sort(f2)); sort * s = get_sort(f1); sort * d[2] = { s, s }; @@ -2851,11 +2827,7 @@ proof * ast_manager::mk_oeq_congruence(app * f1, app * f2, unsigned num_proofs, } proof * ast_manager::mk_quant_intro(quantifier * q1, quantifier * q2, proof * p) { - if (m_proof_mode == PGM_DISABLED) - return m_undef_proof; - if (!p) { - return 0; - } + if (!p) return nullptr; SASSERT(q1->get_num_decls() == q2->get_num_decls()); SASSERT(has_fact(p)); SASSERT(is_iff(get_fact(p))); @@ -2863,8 +2835,7 @@ proof * ast_manager::mk_quant_intro(quantifier * q1, quantifier * q2, proof * p) } proof * ast_manager::mk_oeq_quant_intro(quantifier * q1, quantifier * q2, proof * p) { - if (m_proof_mode == PGM_DISABLED) - return m_undef_proof; + if (!p) return nullptr; SASSERT(q1->get_num_decls() == q2->get_num_decls()); SASSERT(has_fact(p)); SASSERT(is_oeq(get_fact(p))); @@ -2872,25 +2843,26 @@ proof * ast_manager::mk_oeq_quant_intro(quantifier * q1, quantifier * q2, proof } proof * ast_manager::mk_distributivity(expr * s, expr * r) { - if (m_proof_mode == PGM_DISABLED) - return m_undef_proof; return mk_app(m_basic_family_id, PR_DISTRIBUTIVITY, mk_eq(s, r)); } proof * ast_manager::mk_rewrite(expr * s, expr * t) { - if (m_proof_mode == PGM_DISABLED) + SASSERT(proofs_enabled()); + if (proofs_disabled()) return m_undef_proof; return mk_app(m_basic_family_id, PR_REWRITE, mk_eq(s, t)); } proof * ast_manager::mk_oeq_rewrite(expr * s, expr * t) { - if (m_proof_mode == PGM_DISABLED) + SASSERT(proofs_enabled()); + if (proofs_disabled()) return m_undef_proof; return mk_app(m_basic_family_id, PR_REWRITE, mk_oeq(s, t)); } proof * ast_manager::mk_rewrite_star(expr * s, expr * t, unsigned num_proofs, proof * const * proofs) { - if (m_proof_mode == PGM_DISABLED) + SASSERT(proofs_enabled()); + if (proofs_disabled()) return m_undef_proof; ptr_buffer args; args.append(num_proofs, (expr**) proofs); @@ -2899,37 +2871,43 @@ proof * ast_manager::mk_rewrite_star(expr * s, expr * t, unsigned num_proofs, pr } proof * ast_manager::mk_pull_quant(expr * e, quantifier * q) { - if (m_proof_mode == PGM_DISABLED) + SASSERT(proofs_enabled()); + if (proofs_disabled()) return m_undef_proof; return mk_app(m_basic_family_id, PR_PULL_QUANT, mk_iff(e, q)); } proof * ast_manager::mk_pull_quant_star(expr * e, quantifier * q) { - if (m_proof_mode == PGM_DISABLED) + SASSERT(proofs_enabled()); + if (proofs_disabled()) return m_undef_proof; return mk_app(m_basic_family_id, PR_PULL_QUANT_STAR, mk_iff(e, q)); } proof * ast_manager::mk_push_quant(quantifier * q, expr * e) { - if (m_proof_mode == PGM_DISABLED) + SASSERT(proofs_enabled()); + if (proofs_disabled()) return m_undef_proof; return mk_app(m_basic_family_id, PR_PUSH_QUANT, mk_iff(q, e)); } proof * ast_manager::mk_elim_unused_vars(quantifier * q, expr * e) { - if (m_proof_mode == PGM_DISABLED) + SASSERT(proofs_enabled()); + if (proofs_disabled()) return m_undef_proof; return mk_app(m_basic_family_id, PR_ELIM_UNUSED_VARS, mk_iff(q, e)); } proof * ast_manager::mk_der(quantifier * q, expr * e) { - if (m_proof_mode == PGM_DISABLED) + SASSERT(proofs_enabled()); + if (proofs_disabled()) return m_undef_proof; return mk_app(m_basic_family_id, PR_DER, mk_iff(q, e)); } proof * ast_manager::mk_quant_inst(expr * not_q_or_i, unsigned num_bind, expr* const* binding) { - if (m_proof_mode == PGM_DISABLED) + SASSERT(proofs_enabled()); + if (proofs_disabled()) return m_undef_proof; vector params; for (unsigned i = 0; i < num_bind; ++i) { @@ -2964,7 +2942,8 @@ bool ast_manager::is_rewrite(expr const* e, expr*& r1, expr*& r2) const { } proof * ast_manager::mk_def_axiom(expr * ax) { - if (m_proof_mode == PGM_DISABLED) + SASSERT(proofs_enabled()); + if (proofs_disabled()) return m_undef_proof; return mk_app(m_basic_family_id, PR_DEF_AXIOM, ax); } @@ -3006,7 +2985,7 @@ proof * ast_manager::mk_unit_resolution(unsigned num_proofs, proof * const * pro new_lits.push_back(lit); } DEBUG_CODE({ - for (unsigned i = 1; m_proof_mode == PGM_FINE && i < num_proofs; i++) { + for (unsigned i = 1; proofs_enabled() && i < num_proofs; i++) { CTRACE("mk_unit_resolution_bug", !found.get(i, false), for (unsigned j = 0; j < num_proofs; j++) { if (j == i) tout << "Index " << i << " was not found:\n"; @@ -3085,14 +3064,11 @@ proof * ast_manager::mk_unit_resolution(unsigned num_proofs, proof * const * pro } proof * ast_manager::mk_hypothesis(expr * h) { - if (m_proof_mode == PGM_DISABLED) - return m_undef_proof; return mk_app(m_basic_family_id, PR_HYPOTHESIS, h); } proof * ast_manager::mk_lemma(proof * p, expr * lemma) { - if (m_proof_mode == PGM_DISABLED) - return m_undef_proof; + if (!p) return p; SASSERT(has_fact(p)); CTRACE("mk_lemma", !is_false(get_fact(p)), tout << mk_ll_pp(p, *this) << "\n";); SASSERT(is_false(get_fact(p))); @@ -3105,7 +3081,7 @@ proof * ast_manager::mk_def_intro(expr * new_def) { } proof * ast_manager::mk_apply_defs(expr * n, expr * def, unsigned num_proofs, proof * const * proofs) { - if (m_proof_mode == PGM_DISABLED) + if (proofs_disabled()) return m_undef_proof; ptr_buffer args; args.append(num_proofs, (expr**) proofs); @@ -3114,10 +3090,7 @@ proof * ast_manager::mk_apply_defs(expr * n, expr * def, unsigned num_proofs, pr } proof * ast_manager::mk_iff_oeq(proof * p) { - if (m_proof_mode == PGM_DISABLED) - return m_undef_proof; - if (!p) - return p; + if (!p) return p; SASSERT(has_fact(p)); SASSERT(is_iff(get_fact(p)) || is_oeq(get_fact(p))); @@ -3141,7 +3114,7 @@ bool ast_manager::check_nnf_proof_parents(unsigned num_proofs, proof * const * p } proof * ast_manager::mk_nnf_pos(expr * s, expr * t, unsigned num_proofs, proof * const * proofs) { - if (m_proof_mode == PGM_DISABLED) + if (proofs_disabled()) return m_undef_proof; check_nnf_proof_parents(num_proofs, proofs); ptr_buffer args; @@ -3151,7 +3124,7 @@ proof * ast_manager::mk_nnf_pos(expr * s, expr * t, unsigned num_proofs, proof * } proof * ast_manager::mk_nnf_neg(expr * s, expr * t, unsigned num_proofs, proof * const * proofs) { - if (m_proof_mode == PGM_DISABLED) + if (proofs_disabled()) return m_undef_proof; check_nnf_proof_parents(num_proofs, proofs); ptr_buffer args; @@ -3161,7 +3134,7 @@ proof * ast_manager::mk_nnf_neg(expr * s, expr * t, unsigned num_proofs, proof * } proof * ast_manager::mk_nnf_star(expr * s, expr * t, unsigned num_proofs, proof * const * proofs) { - if (m_proof_mode == PGM_DISABLED) + if (proofs_disabled()) return m_undef_proof; ptr_buffer args; args.append(num_proofs, (expr**) proofs); @@ -3170,7 +3143,7 @@ proof * ast_manager::mk_nnf_star(expr * s, expr * t, unsigned num_proofs, proof } proof * ast_manager::mk_skolemization(expr * q, expr * e) { - if (m_proof_mode == PGM_DISABLED) + if (proofs_disabled()) return m_undef_proof; SASSERT(is_bool(q)); SASSERT(is_bool(e)); @@ -3178,7 +3151,7 @@ proof * ast_manager::mk_skolemization(expr * q, expr * e) { } proof * ast_manager::mk_cnf_star(expr * s, expr * t, unsigned num_proofs, proof * const * proofs) { - if (m_proof_mode == PGM_DISABLED) + if (proofs_disabled()) return m_undef_proof; ptr_buffer args; args.append(num_proofs, (expr**) proofs); @@ -3187,7 +3160,7 @@ proof * ast_manager::mk_cnf_star(expr * s, expr * t, unsigned num_proofs, proof } proof * ast_manager::mk_and_elim(proof * p, unsigned i) { - if (m_proof_mode == PGM_DISABLED) + if (proofs_disabled()) return m_undef_proof; SASSERT(has_fact(p)); SASSERT(is_and(get_fact(p))); @@ -3198,7 +3171,7 @@ proof * ast_manager::mk_and_elim(proof * p, unsigned i) { } proof * ast_manager::mk_not_or_elim(proof * p, unsigned i) { - if (m_proof_mode == PGM_DISABLED) + if (proofs_disabled()) return m_undef_proof; SASSERT(has_fact(p)); SASSERT(is_not(get_fact(p))); @@ -3221,7 +3194,7 @@ proof * ast_manager::mk_th_lemma( unsigned num_params, parameter const* params ) { - if (m_proof_mode == PGM_DISABLED) + if (proofs_disabled()) return m_undef_proof; ptr_buffer args; diff --git a/src/ast/ast.h b/src/ast/ast.h index d1466e569..e579e4565 100644 --- a/src/ast/ast.h +++ b/src/ast/ast.h @@ -121,6 +121,20 @@ public: explicit parameter(unsigned ext_id, bool):m_kind(PARAM_EXTERNAL), m_ext_id(ext_id) {} parameter(parameter const&); + parameter(parameter && other) : m_kind(other.m_kind) { + switch (other.m_kind) { + case PARAM_INT: m_int = other.get_int(); break; + case PARAM_AST: m_ast = other.get_ast(); break; + case PARAM_SYMBOL: m_symbol = other.m_symbol; break; + case PARAM_RATIONAL: m_rational = 0; std::swap(m_rational, other.m_rational); break; + case PARAM_DOUBLE: m_dval = other.m_dval; break; + case PARAM_EXTERNAL: m_ext_id = other.m_ext_id; break; + default: + UNREACHABLE(); + break; + } + } + ~parameter(); parameter& operator=(parameter const& other); @@ -1382,8 +1396,7 @@ public: enum proof_gen_mode { PGM_DISABLED, - PGM_COARSE, - PGM_FINE + PGM_ENABLED }; // ----------------------------------- @@ -2076,15 +2089,14 @@ protected: proof * mk_proof(family_id fid, decl_kind k, expr * arg1, expr * arg2); proof * mk_proof(family_id fid, decl_kind k, expr * arg1, expr * arg2, expr * arg3); + proof * mk_undef_proof() const { return m_undef_proof; } + public: bool proofs_enabled() const { return m_proof_mode != PGM_DISABLED; } bool proofs_disabled() const { return m_proof_mode == PGM_DISABLED; } - bool coarse_grain_proofs() const { return m_proof_mode == PGM_COARSE; } - bool fine_grain_proofs() const { return m_proof_mode == PGM_FINE; } proof_gen_mode proof_mode() const { return m_proof_mode; } void toggle_proof_mode(proof_gen_mode m) { m_proof_mode = m; } // APIs for creating proof objects return [undef] - proof * mk_undef_proof() const { return m_undef_proof; } bool is_proof(expr const * n) const { return is_app(n) && to_app(n)->get_decl()->get_range() == m_proof_sort; } diff --git a/src/ast/ast_pp_dot.cpp b/src/ast/ast_pp_dot.cpp new file mode 100644 index 000000000..1dfbe9aae --- /dev/null +++ b/src/ast/ast_pp_dot.cpp @@ -0,0 +1,133 @@ +/*++ + +Abstract: Pretty-printer for proofs in Graphviz format + +--*/ + +#include "util/util.h" +#include "util/map.h" +#include "ast/ast_pp_dot.h" + +// string escaping for DOT +std::string escape_dot(std::string const & s) { + std::string res; + res.reserve(s.size()); // preallocate + for (auto c : s) { + if (c == '\n') + res.append("\\l"); + else + res.push_back(c); + } + return res; +} + +// map from proofs to unique IDs +typedef obj_map expr2id; + +// temporary structure for traversing the proof and printing it +struct ast_pp_dot_st { + ast_manager & m_manager; + std::ostream & m_out; + const ast_pp_dot * m_pp; + unsigned m_next_id; + expr2id m_id_map; + obj_hashtable m_printed; + svector m_to_print; + bool m_first; + + ast_pp_dot_st(const ast_pp_dot * pp, std::ostream & out) : + m_manager(pp->get_manager()), + m_out(out), + m_pp(pp), + m_next_id(0), + m_id_map(), + m_printed(), + m_to_print(), + m_first(true) {} + + ~ast_pp_dot_st() {}; + + void push_term(const expr * a) { m_to_print.push_back(a); } + + void pp_loop() { + // DFS traversal + while (!m_to_print.empty()) { + const expr * a = m_to_print.back(); + m_to_print.pop_back(); + if (!m_printed.contains(a)) { + m_printed.insert(a); + if (m().is_proof(a)) + pp_step(to_app(a)); + else + pp_atomic_step(a); + } + } + } + +private: + + inline ast_manager & m() const { return m_manager; } + + // label for an expression + std::string label_of_expr(const expr * e) const { + expr_ref er((expr*)e, m()); + std::ostringstream out; + out << er << std::flush; + return escape_dot(out.str()); + } + + void pp_atomic_step(const expr * e) { + unsigned id = get_id(e); + m_out << "node_" << id << " [shape=box,color=\"yellow\",style=\"filled\",label=\"" << label_of_expr(e) << "\"] ;" << std::endl; + } + + void pp_step(const proof * p) { + TRACE("pp_ast_dot_step", tout << " :kind " << p->get_kind() << " :num-args " << p->get_num_args() << "\n";); + if (m().has_fact(p)) { + // print result + expr* p_res = m().get_fact(p); // result of proof step + unsigned id = get_id(p); + unsigned num_parents = m().get_num_parents(p); + const char* color = + m_first ? (m_first=false,"color=\"red\"") : num_parents==0 ? "color=\"yellow\"": ""; + m_out << "node_" << id << + " [shape=box,style=\"filled\",label=\"" << label_of_expr(p_res) << "\"" + << color << "]" << std::endl; + // now print edges to parents (except last one, which is the result) + std::string label = p->get_decl()->get_name().str(); + for (unsigned i = 0 ; i < num_parents; ++i) { + expr* parent = m().get_parent(p, i); + // explore parent, also print a link to it + push_term(to_app(parent)); + m_out << "node_" << id << " -> " << "node_" << get_id((expr*)parent) + << "[label=\"" << label << "\"];" << std::endl;; + } + } else { + pp_atomic_step(p); + } + } + + // find a unique ID for this proof + unsigned get_id(const expr * e) { + unsigned id = 0; + if (!m_id_map.find(e, id)) { + id = m_next_id++; + m_id_map.insert(e, id); + } + return id; + } + +}; + +// main printer +std::ostream & ast_pp_dot::pp(std::ostream & out) const { + out << "digraph proof { " << std::endl; + ast_pp_dot_st pp_st(this, out); + pp_st.push_term(m_pr); + pp_st.pp_loop(); + out << std::endl << " } " << std::endl << std::flush; + return out; +} + +std::ostream &operator<<(std::ostream &out, const ast_pp_dot & p) { return p.pp(out); } + diff --git a/src/ast/ast_pp_dot.h b/src/ast/ast_pp_dot.h new file mode 100644 index 000000000..537754e83 --- /dev/null +++ b/src/ast/ast_pp_dot.h @@ -0,0 +1,24 @@ +/*++ + +Abstract: Pretty-printer for proofs in Graphviz format + +--*/ + +#pragma once + +#include +#include "ast_pp.h" + +class ast_pp_dot { + ast_manager & m_manager; + proof * const m_pr; + + public: + ast_pp_dot(proof *pr, ast_manager &m) : m_manager(m), m_pr(pr) {} + ast_pp_dot(proof_ref &e) : m_manager(e.m()), m_pr(e.get()) {} + + std::ostream & pp(std::ostream & out) const; + ast_manager & get_manager() const { return m_manager; } +}; + +std::ostream &operator<<(std::ostream &out, const ast_pp_dot & p); \ No newline at end of file diff --git a/src/ast/ast_smt2_pp.cpp b/src/ast/ast_smt2_pp.cpp index 87ca5652a..c1130f7c2 100644 --- a/src/ast/ast_smt2_pp.cpp +++ b/src/ast/ast_smt2_pp.cpp @@ -36,6 +36,26 @@ format * smt2_pp_environment::pp_fdecl_name(symbol const & s0, unsigned & len, b symbol s = m_renaming.get_symbol(s0, is_skolem); len = static_cast(strlen(s.bare_str())); return mk_string(m, s.bare_str()); +#if 0 + if (is_smt2_quoted_symbol(s)) { + std::string str = mk_smt2_quoted_symbol(s); + len = static_cast(str.length()); + return mk_string(m, str.c_str()); + } + else if (s.is_numerical()) { + std::string str = s.str(); + len = static_cast(str.length()); + return mk_string(m, str.c_str()); + } + else if (!s.bare_str()) { + len = 4; + return mk_string(m, "null"); + } + else { + len = static_cast(strlen(s.bare_str())); + return mk_string(m, s.bare_str()); + } +#endif } format * smt2_pp_environment::pp_fdecl_name(func_decl * f, unsigned & len) const { diff --git a/src/ast/bv_decl_plugin.cpp b/src/ast/bv_decl_plugin.cpp index fd176c1e0..04f69b8c6 100644 --- a/src/ast/bv_decl_plugin.cpp +++ b/src/ast/bv_decl_plugin.cpp @@ -863,8 +863,7 @@ app * bv_util::mk_numeral(rational const & val, sort* s) const { } app * bv_util::mk_numeral(rational const & val, unsigned bv_size) const { - parameter p1(val); - parameter p[2] = { p1, parameter(static_cast(bv_size)) }; + parameter p[2] = { parameter(val), parameter(static_cast(bv_size)) }; return m_manager.mk_app(get_fid(), OP_BV_NUM, 2, p, 0, 0); } diff --git a/src/ast/expr_substitution.h b/src/ast/expr_substitution.h index 90154d163..1590f888c 100644 --- a/src/ast/expr_substitution.h +++ b/src/ast/expr_substitution.h @@ -80,6 +80,7 @@ public: m_trail_lim.resize(new_sz); } } + unsigned scope_level() const { return m_trail_lim.size(); } bool empty() const { return m_subst.empty(); } expr* find(expr * e) { proof* pr; expr* d = 0; if (find(e, d, pr)) return d; else return e; } bool find(expr * s, expr * & def, proof * & def_pr) { return m_subst.find(s, def, def_pr); } diff --git a/src/ast/fpa/bv2fpa_converter.cpp b/src/ast/fpa/bv2fpa_converter.cpp index 93bd79571..2f5a7c3c1 100644 --- a/src/ast/fpa/bv2fpa_converter.cpp +++ b/src/ast/fpa/bv2fpa_converter.cpp @@ -250,7 +250,7 @@ bv2fpa_converter::array_model bv2fpa_converter::convert_array_func_interp(model_ am.new_float_fd = m.mk_fresh_func_decl(arity, array_domain.c_ptr(), rng); am.new_float_fi = convert_func_interp(mc, am.new_float_fd, bv_f); am.bv_fd = bv_f; - am.result = arr_util.mk_as_array(f->get_range(), am.new_float_fd); + am.result = arr_util.mk_as_array(am.new_float_fd); return am; } diff --git a/src/ast/fpa/fpa2bv_converter.cpp b/src/ast/fpa/fpa2bv_converter.cpp index 13a7599a9..220295dad 100644 --- a/src/ast/fpa/fpa2bv_converter.cpp +++ b/src/ast/fpa/fpa2bv_converter.cpp @@ -3076,8 +3076,6 @@ void fpa2bv_converter::mk_to_ieee_bv(func_decl * f, unsigned num, expr * const * split_fp(x, sgn, e, s); mk_is_nan(x, x_is_nan); - sort * fp_srt = m.get_sort(x); - expr_ref unspec(m); mk_to_ieee_bv_unspecified(f, num, args, unspec); diff --git a/src/ast/normal_forms/nnf.cpp b/src/ast/normal_forms/nnf.cpp index 247e9dea1..6fc65543d 100644 --- a/src/ast/normal_forms/nnf.cpp +++ b/src/ast/normal_forms/nnf.cpp @@ -40,7 +40,7 @@ enum nnf_mode { transformation will be in skolem normal form. If a formula is too expensive to be put into NNF, then nested quantifiers and labels are renamed. - + This mode is sufficient when using E-matching. */ NNF_QUANT, /* A subformula is put into NNF if it contains @@ -48,7 +48,7 @@ enum nnf_mode { quantifier. The result of the transformation will be in skolem normal form, and the body of quantifiers will be in NNF. If a ground formula is too expensive to - be put into NNF, then nested quantifiers and labels + be put into NNF, then nested quantifiers and labels are renamed. This mode is sufficient when using Superposition @@ -89,7 +89,7 @@ class skolemizer { } TRACE("skolemizer", tout << "skid: " << q->get_skid() << "\n";); - + expr_ref_vector substitution(m()); unsigned num_decls = q->get_num_decls(); for (unsigned i = num_decls; i > 0; ) { @@ -111,7 +111,7 @@ class skolemizer { substitution.push_back(0); } // - // (VAR num_decls) ... (VAR num_decls+sz-1) + // (VAR num_decls) ... (VAR num_decls+sz-1) // are in positions num_decls .. num_decls+sz-1 // std::reverse(substitution.c_ptr(), substitution.c_ptr() + substitution.size()); @@ -139,7 +139,7 @@ class skolemizer { s(body, substitution.size(), substitution.c_ptr(), r); p = 0; if (m().proofs_enabled()) { - if (q->is_forall()) + if (q->is_forall()) p = m().mk_skolemization(m().mk_not(q), m().mk_not(r)); else p = m().mk_skolemization(q, r); @@ -175,7 +175,7 @@ public: m_cache_pr.insert(q, p); } } - + bool is_sk_hack(expr * p) const { SASSERT(m().is_pattern(p)); if (to_app(p)->get_num_args() != 1) @@ -204,11 +204,11 @@ struct nnf::imp { unsigned m_i:28; unsigned m_pol:1; // pos/neg polarity unsigned m_in_q:1; // true if m_curr is nested in a quantifier - unsigned m_new_child:1; + unsigned m_new_child:1; unsigned m_cache_result:1; unsigned m_spos; // top of the result stack, when the frame was created. - frame(expr_ref& n, bool pol, bool in_q, bool cache_res, unsigned spos): - m_curr(n), + frame(expr_ref && n, bool pol, bool in_q, bool cache_res, unsigned spos): + m_curr(std::move(n)), m_i(0), m_pol(pol), m_in_q(in_q), @@ -216,6 +216,16 @@ struct nnf::imp { m_cache_result(cache_res), m_spos(spos) { } + frame(frame && other): + m_curr(std::move(other.m_curr)), + m_i(other.m_i), + m_pol(other.m_pol), + m_in_q(other.m_in_q), + m_new_child(other.m_new_child), + m_cache_result(other.m_cache_result), + m_spos(other.m_spos) { + } + }; // There are four caches: @@ -223,22 +233,22 @@ struct nnf::imp { #define POS_NQ_CIDX 1 // positive polarity and not nested in a quantifier #define NEG_Q_CIDX 2 // negative polarity and nested in a quantifier #define POS_Q_CIDX 3 // positive polarity and nested in a quantifier - + ast_manager & m_manager; vector m_frame_stack; expr_ref_vector m_result_stack; - + typedef act_cache cache; cache * m_cache[4]; expr_ref_vector m_todo_defs; proof_ref_vector m_todo_proofs; - + // proof generation goodness ---- proof_ref_vector m_result_pr_stack; cache * m_cache_pr[4]; // ------------------------------ - + skolemizer m_skolemizer; // configuration ---------------- @@ -249,7 +259,7 @@ struct nnf::imp { name_exprs * m_name_nested_formulas; name_exprs * m_name_quant; - + unsigned long long m_max_memory; // in bytes imp(ast_manager & m, defined_names & n, params_ref const & p): @@ -292,9 +302,9 @@ struct nnf::imp { m_mode = NNF_FULL; else if (mode_sym == "quantifiers") m_mode = NNF_QUANT; - else + else throw nnf_params_exception("invalid NNF mode"); - + TRACE("nnf", tout << "nnf-mode: " << m_mode << " " << mode_sym << "\n" << _p << "\n";); m_ignore_labels = p.ignore_labels(); @@ -324,12 +334,11 @@ struct nnf::imp { } void push_frame(expr * t, bool pol, bool in_q, bool cache_res) { - expr_ref tr(t, m()); - m_frame_stack.push_back(frame(tr, pol, in_q, cache_res, m_result_stack.size())); + m_frame_stack.push_back(frame(expr_ref(t, m()), pol, in_q, cache_res, m_result_stack.size())); } - static unsigned get_cache_idx(bool pol, bool in_q) { - return static_cast(in_q) * 2 + static_cast(pol); + static unsigned get_cache_idx(bool pol, bool in_q) { + return static_cast(in_q) * 2 + static_cast(pol); } void cache_result(expr * t, bool pol, bool in_q, expr * v, proof * pr) { @@ -339,8 +348,8 @@ struct nnf::imp { m_cache_pr[idx]->insert(t, pr); } - expr * get_cached(expr * t, bool pol, bool in_q) const { - return m_cache[get_cache_idx(pol, in_q)]->find(t); + expr * get_cached(expr * t, bool pol, bool in_q) const { + return m_cache[get_cache_idx(pol, in_q)]->find(t); } proof * get_cached_pr(expr * t, bool pol, bool in_q) const { @@ -368,12 +377,12 @@ struct nnf::imp { return false; } - + void checkpoint() { cooperate("nnf"); if (memory::get_allocation_size() > m_max_memory) throw nnf_exception(Z3_MAX_MEMORY_MSG); - if (m().canceled()) + if (m().canceled()) throw nnf_exception(m().limit().get_cancel_msg()); } @@ -382,11 +391,11 @@ struct nnf::imp { m_frame_stack.back().m_new_child = true; } - void set_new_child_flag(expr * old_t, expr * new_t) { - if (old_t != new_t) - set_new_child_flag(); + void set_new_child_flag(expr * old_t, expr * new_t) { + if (old_t != new_t) + set_new_child_flag(); } - + void skip(expr * t, bool pol) { expr * r = pol ? t : m().mk_not(t); m_result_stack.push_back(r); @@ -448,10 +457,10 @@ struct nnf::imp { if (pol) { if (old_e->get_decl() == new_e->get_decl()) return m().mk_oeq_congruence(old_e, new_e, num_parents, parents); - else + else return m().mk_nnf_pos(old_e, new_e, num_parents, parents); } - else + else return m().mk_nnf_neg(old_e, new_e, num_parents, parents); } @@ -468,7 +477,7 @@ struct nnf::imp { r = m().mk_and(t->get_num_args(), m_result_stack.c_ptr() + fr.m_spos); else r = m().mk_or(t->get_num_args(), m_result_stack.c_ptr() + fr.m_spos); - + m_result_stack.shrink(fr.m_spos); m_result_stack.push_back(r); if (proofs_enabled()) { @@ -520,7 +529,7 @@ struct nnf::imp { r = m().mk_or(2, m_result_stack.c_ptr() + fr.m_spos); else r = m().mk_and(2, m_result_stack.c_ptr() + fr.m_spos); - + m_result_stack.shrink(fr.m_spos); m_result_stack.push_back(r); if (proofs_enabled()) { @@ -554,7 +563,7 @@ struct nnf::imp { default: break; } - + expr * const * rs = m_result_stack.c_ptr() + fr.m_spos; expr * _cond = rs[0]; expr * _not_cond = rs[1]; @@ -574,7 +583,7 @@ struct nnf::imp { } bool is_eq(app * t) const { return m().is_eq(t) || m().is_iff(t); } - + bool process_iff_xor(app * t, frame & fr) { SASSERT(t->get_num_args() == 2); switch (fr.m_i) { @@ -605,7 +614,7 @@ struct nnf::imp { expr * not_rhs = rs[3]; app * r; - if (is_eq(t) == fr.m_pol) + if (is_eq(t) == fr.m_pol) r = m().mk_and(m().mk_or(not_lhs, rhs), m().mk_or(lhs, not_rhs)); else r = m().mk_and(m().mk_or(lhs, rhs), m().mk_or(not_lhs, not_rhs)); @@ -626,7 +635,7 @@ struct nnf::imp { else return process_default(t, fr); } - + bool process_default(app * t, frame & fr) { SASSERT(fr.m_i == 0); if (m_mode == NNF_FULL || t->has_quantifiers() || t->has_labels()) { @@ -636,10 +645,10 @@ struct nnf::imp { m_name_nested_formulas->operator()(t, m_todo_defs, m_todo_proofs, n2, pr2); else m_name_quant->operator()(t, m_todo_defs, m_todo_proofs, n2, pr2); - + if (!fr.m_pol) n2 = m().mk_not(n2); - + m_result_stack.push_back(n2); if (proofs_enabled()) { if (!fr.m_pol) { @@ -666,10 +675,10 @@ struct nnf::imp { expr * arg = m_result_stack.back(); proof * arg_pr = proofs_enabled() ? m_result_pr_stack.back() : 0; - if (m_ignore_labels && !proofs_enabled()) + if (m_ignore_labels && !proofs_enabled()) return true; // the result is already on the stack - + buffer names; bool pos; m().is_label(t, pos, names); @@ -684,7 +693,7 @@ struct nnf::imp { pr = m().mk_transitivity(mk_proof(fr.m_pol, 1, &arg_pr, t, to_app(aux)), m().mk_iff_oeq(m().mk_rewrite(aux, r))); } - } + } else { r = arg; if (proofs_enabled()) { @@ -692,7 +701,7 @@ struct nnf::imp { pr = m().mk_transitivity(p1, arg_pr); } } - + m_result_stack.pop_back(); m_result_stack.push_back(r); if (proofs_enabled()) { @@ -729,7 +738,7 @@ struct nnf::imp { if (m().is_label(t)) { return process_label(t, fr); } - + return process_default(t, fr); } @@ -737,7 +746,7 @@ struct nnf::imp { skip(v, fr.m_pol); return true; } - + bool process_quantifier(quantifier * q, frame & fr) { expr_ref r(m()); proof_ref pr(m()); @@ -757,7 +766,7 @@ struct nnf::imp { if (q->is_forall() == fr.m_pol || !m_skolemize) { expr * new_expr = m_result_stack.back(); proof * new_expr_pr = proofs_enabled() ? m_result_pr_stack.back() : 0; - + ptr_buffer new_patterns; if (q->is_forall() == fr.m_pol) { @@ -773,7 +782,7 @@ struct nnf::imp { // New quantifier has existential force. // So, ignore patterns } - + quantifier * new_q = 0; proof * new_q_pr = 0; if (fr.m_pol) { @@ -786,7 +795,7 @@ struct nnf::imp { if (proofs_enabled()) new_q_pr = m().mk_nnf_neg(q, new_q, 1, &new_expr_pr); } - + m_result_stack.pop_back(); m_result_stack.push_back(new_q); if (proofs_enabled()) { @@ -809,7 +818,7 @@ struct nnf::imp { } return true; } - + void recover_result(expr * t, expr_ref & result, proof_ref & result_pr) { // recover result from the top of the stack. result = m_result_stack.back(); @@ -873,7 +882,7 @@ struct nnf::imp { process(n, r, pr); unsigned old_sz1 = new_defs.size(); unsigned old_sz2 = new_def_proofs.size(); - + for (unsigned i = 0; i < m_todo_defs.size(); i++) { expr_ref dr(m()); proof_ref dpr(m()); @@ -881,7 +890,7 @@ struct nnf::imp { new_defs.push_back(dr); if (proofs_enabled()) { proof * new_pr = m().mk_modus_ponens(m_todo_proofs.get(i), dpr); - new_def_proofs.push_back(new_pr); + new_def_proofs.push_back(new_pr); } } std::reverse(new_defs.c_ptr() + old_sz1, new_defs.c_ptr() + new_defs.size()); @@ -898,7 +907,7 @@ nnf::nnf(ast_manager & m, defined_names & n, params_ref const & p) { nnf::~nnf() { dealloc(m_imp); } - + void nnf::operator()(expr * n, expr_ref_vector & new_defs, proof_ref_vector & new_def_proofs, expr_ref & r, proof_ref & p) { m_imp->operator()(n, new_defs, new_def_proofs, r, p); TRACE("nnf_result", tout << mk_ismt2_pp(n, m_imp->m()) << "\nNNF result:\n" << mk_ismt2_pp(r, m_imp->m()) << "\n";); diff --git a/src/ast/normal_forms/pull_quant.cpp b/src/ast/normal_forms/pull_quant.cpp index 239fd9008..ee618c747 100644 --- a/src/ast/normal_forms/pull_quant.cpp +++ b/src/ast/normal_forms/pull_quant.cpp @@ -229,7 +229,7 @@ struct pull_quant::imp { proofs.push_back(m_manager.mk_pull_quant(arg, to_quantifier(new_arg))); } pull_quant1(to_app(n)->get_decl(), new_args.size(), new_args.c_ptr(), r); - if (m_manager.fine_grain_proofs()) { + if (m_manager.proofs_enabled()) { app * r1 = m_manager.mk_app(to_app(n)->get_decl(), new_args.size(), new_args.c_ptr()); proof * p1 = proofs.empty() ? 0 : m_manager.mk_congruence(to_app(n), r1, proofs.size(), proofs.c_ptr()); proof * p2 = r1 == r ? 0 : m_manager.mk_pull_quant(r1, to_quantifier(r)); @@ -240,7 +240,7 @@ struct pull_quant::imp { expr_ref new_expr(m_manager); pull_quant1(to_quantifier(n)->get_expr(), new_expr); pull_quant1(to_quantifier(n), new_expr, r); - if (m_manager.fine_grain_proofs()) { + if (m_manager.proofs_enabled()) { quantifier * q1 = m_manager.update_quantifier(to_quantifier(n), new_expr); proof * p1 = 0; if (n != q1) { diff --git a/src/ast/pattern/expr_pattern_match.cpp b/src/ast/pattern/expr_pattern_match.cpp index 770832d1f..628c777d3 100644 --- a/src/ast/pattern/expr_pattern_match.cpp +++ b/src/ast/pattern/expr_pattern_match.cpp @@ -179,11 +179,11 @@ expr_pattern_match::compile(expr* q) } if (m_regs.size() <= max_reg) { - m_regs.resize(max_reg+1, 0); + m_regs.resize(max_reg+1); } if (m_bound_dom.size() <= num_bound) { - m_bound_dom.resize(num_bound+1, 0); - m_bound_rng.resize(num_bound+1, 0); + m_bound_dom.resize(num_bound+1); + m_bound_rng.resize(num_bound+1); } instr.m_kind = YIELD; diff --git a/src/ast/pattern/pattern_inference.cpp b/src/ast/pattern/pattern_inference.cpp index 5a1fa473c..60d004347 100644 --- a/src/ast/pattern/pattern_inference.cpp +++ b/src/ast/pattern/pattern_inference.cpp @@ -606,7 +606,7 @@ bool pattern_inference_cfg::reduce_quantifier( result = m.update_quantifier_weight(tmp, new_weight); TRACE("pattern_inference", tout << "found patterns in database, weight: " << new_weight << "\n" << mk_pp(new_q, m) << "\n";); } - if (m.fine_grain_proofs()) + if (m.proofs_enabled()) result_pr = m.mk_rewrite(q, new_q); return true; } @@ -671,7 +671,7 @@ bool pattern_inference_cfg::reduce_quantifier( quantifier_ref new_q(m.update_quantifier(q, new_patterns.size(), (expr**) new_patterns.c_ptr(), new_body), m); if (weight != q->get_weight()) new_q = m.update_quantifier_weight(new_q, weight); - if (m.fine_grain_proofs()) { + if (m.proofs_enabled()) { proof* new_body_pr = m.mk_reflexivity(new_body); result_pr = m.mk_quant_intro(q, new_q, new_body_pr); } @@ -689,7 +689,7 @@ bool pattern_inference_cfg::reduce_quantifier( warning_msg("pulled nested quantifier to be able to find an useable pattern (quantifier id: %s)", q->get_qid().str().c_str()); } new_q = m.update_quantifier(result2, new_patterns.size(), (expr**) new_patterns.c_ptr(), result2->get_expr()); - if (m.fine_grain_proofs()) { + if (m.proofs_enabled()) { result_pr = m.mk_transitivity(new_pr, m.mk_quant_intro(result2, new_q, m.mk_reflexivity(new_q->get_expr()))); } TRACE("pattern_inference", tout << "pulled quantifier:\n" << mk_pp(new_q, m) << "\n";); diff --git a/src/ast/proof_checker/CMakeLists.txt b/src/ast/proofs/CMakeLists.txt similarity index 60% rename from src/ast/proof_checker/CMakeLists.txt rename to src/ast/proofs/CMakeLists.txt index 5c947adec..6eedb0fac 100644 --- a/src/ast/proof_checker/CMakeLists.txt +++ b/src/ast/proofs/CMakeLists.txt @@ -1,6 +1,7 @@ -z3_add_component(proof_checker +z3_add_component(proofs SOURCES proof_checker.cpp + proof_utils.cpp COMPONENT_DEPENDENCIES rewriter -) +) \ No newline at end of file diff --git a/src/ast/proof_checker/proof_checker.cpp b/src/ast/proofs/proof_checker.cpp similarity index 99% rename from src/ast/proof_checker/proof_checker.cpp rename to src/ast/proofs/proof_checker.cpp index afe2baeed..3f9438229 100644 --- a/src/ast/proof_checker/proof_checker.cpp +++ b/src/ast/proofs/proof_checker.cpp @@ -4,10 +4,9 @@ Copyright (c) 2015 Microsoft Corporation --*/ -#include "ast/proof_checker/proof_checker.h" +#include "ast/proofs/proof_checker.h" #include "ast/ast_ll_pp.h" #include "ast/ast_pp.h" -// include "spc_decl_plugin.h" #include "ast/ast_smt_pp.h" #include "ast/arith_decl_plugin.h" #include "ast/rewriter/th_rewriter.h" diff --git a/src/ast/proof_checker/proof_checker.h b/src/ast/proofs/proof_checker.h similarity index 100% rename from src/ast/proof_checker/proof_checker.h rename to src/ast/proofs/proof_checker.h diff --git a/src/muz/base/proof_utils.cpp b/src/ast/proofs/proof_utils.cpp similarity index 70% rename from src/muz/base/proof_utils.cpp rename to src/ast/proofs/proof_utils.cpp index 3b2d50fdc..58500cb79 100644 --- a/src/muz/base/proof_utils.cpp +++ b/src/ast/proofs/proof_utils.cpp @@ -1,15 +1,343 @@ - /*++ -Copyright (c) 2015 Microsoft Corporation +Copyright (c) 2017 Arie Gurfinkel + +Module Name: + + proof_utils.cpp + +Abstract: + Utilities to traverse and manipulate proofs + +Author: + Bernhard Gleiss + Arie Gurfinkel + +Revision History: --*/ -#include "muz/base/dl_util.h" -#include "muz/base/proof_utils.h" -#include "ast/ast_smt2_pp.h" +#include "ast/ast_util.h" +#include "ast/ast_pp.h" +#include "ast/proofs/proof_utils.h" +#include "ast/proofs/proof_checker.h" #include "ast/rewriter/var_subst.h" +#include "util/container_util.h" + + +proof_post_order::proof_post_order(proof* root, ast_manager& manager) : m(manager) +{m_todo.push_back(root);} + +bool proof_post_order::hasNext() +{return !m_todo.empty();} + +/* + * iterative post-order depth-first search (DFS) through the proof DAG + */ +proof* proof_post_order::next() +{ + while (!m_todo.empty()) { + proof* currentNode = m_todo.back(); + + // if we haven't already visited the current unit + if (!m_visited.is_marked(currentNode)) { + bool existsUnvisitedParent = false; + + // add unprocessed premises to stack for DFS. + // If there is at least one unprocessed premise, don't compute the result + // for currentProof now, but wait until those unprocessed premises are processed. + for (unsigned i = 0; i < m.get_num_parents(currentNode); ++i) { + SASSERT(m.is_proof(currentNode->get_arg(i))); + proof* premise = to_app(currentNode->get_arg(i)); + + // if we haven't visited the current premise yet + if (!m_visited.is_marked(premise)) { + // add it to the stack + m_todo.push_back(premise); + existsUnvisitedParent = true; + } + } + + // if we already visited all parent-inferences, we can visit the inference too + if (!existsUnvisitedParent) { + m_visited.mark(currentNode, true); + m_todo.pop_back(); + return currentNode; + } + } else { + m_todo.pop_back(); + } + } + // we have already iterated through all inferences + return nullptr; +} + class reduce_hypotheses { + ast_manager &m; + // tracking all created expressions + expr_ref_vector m_pinned; + + // cache for the transformation + obj_map m_cache; + + // map from unit literals to their hypotheses-free derivations + obj_map m_units; + + // -- all hypotheses in the the proof + obj_hashtable m_hyps; + + // marks hypothetical proofs + ast_mark m_hypmark; + + + // stack + ptr_vector m_todo; + + void reset() + { + m_cache.reset(); + m_units.reset(); + m_hyps.reset(); + m_hypmark.reset(); + m_pinned.reset(); + } + + bool compute_mark1(proof *pr) + { + bool hyp_mark = false; + // lemmas clear all hypotheses + if (!m.is_lemma(pr)) { + for (unsigned i = 0, sz = m.get_num_parents(pr); i < sz; ++i) { + if (m_hypmark.is_marked(m.get_parent(pr, i))) { + hyp_mark = true; + break; + } + } + } + m_hypmark.mark(pr, hyp_mark); + return hyp_mark; + } + + void compute_marks(proof* pr) { + proof *p; + proof_post_order pit(pr, m); + while (pit.hasNext()) { + p = pit.next(); + if (m.is_hypothesis(p)) { + m_hypmark.mark(p, true); + m_hyps.insert(m.get_fact(p)); + } + else { + bool hyp_mark = compute_mark1(p); + // collect units that are hyp-free and are used as hypotheses somewhere + if (!hyp_mark && m.has_fact(p) && m_hyps.contains(m.get_fact(p))) { + m_units.insert(m.get_fact(p), p); + } + } + } + } + void find_units(proof *pr) + { + // optional. not implemented yet. + } + + void reduce(proof* pf, proof_ref &out) + { + proof *res = NULL; + + m_todo.reset(); + m_todo.push_back(pf); + ptr_buffer args; + bool dirty = false; + + while (!m_todo.empty()) { + proof *p, *tmp, *pp; + unsigned todo_sz; + + p = m_todo.back(); + if (m_cache.find(p, tmp)) { + res = tmp; + m_todo.pop_back(); + continue; + } + + dirty = false; + args.reset(); + todo_sz = m_todo.size(); + for (unsigned i = 0, sz = m.get_num_parents(p); i < sz; ++i) { + pp = m.get_parent(p, i); + if (m_cache.find(pp, tmp)) { + args.push_back(tmp); + dirty = dirty || pp != tmp; + } else { + m_todo.push_back(pp); + } + } + + if (todo_sz < m_todo.size()) { continue; } + else { m_todo.pop_back(); } + + if (m.is_hypothesis(p)) { + // hyp: replace by a corresponding unit + if (m_units.find(m.get_fact(p), tmp)) { + res = tmp; + } else { res = p; } + } + + else if (!dirty) { res = p; } + + else if (m.is_lemma(p)) { + //lemma: reduce the premise; remove reduced consequences from conclusion + SASSERT(args.size() == 1); + res = mk_lemma_core(args.get(0), m.get_fact(p)); + compute_mark1(res); + } else if (m.is_unit_resolution(p)) { + // unit: reduce untis; reduce the first premise; rebuild unit resolution + res = mk_unit_resolution_core(args.size(), args.c_ptr()); + compute_mark1(res); + } else { + // other: reduce all premises; reapply + if (m.has_fact(p)) { args.push_back(to_app(m.get_fact(p))); } + SASSERT(p->get_decl()->get_arity() == args.size()); + res = m.mk_app(p->get_decl(), args.size(), (expr * const*)args.c_ptr()); + m_pinned.push_back(res); + compute_mark1(res); + } + + SASSERT(res); + m_cache.insert(p, res); + + if (m.has_fact(res) && m.is_false(m.get_fact(res))) { break; } + } + + out = res; + } + + // returns true if (hypothesis (not a)) would be reduced + bool is_reduced(expr *a) + { + expr_ref e(m); + if (m.is_not(a)) { e = to_app(a)->get_arg(0); } + else { e = m.mk_not(a); } + + return m_units.contains(e); + } + + proof *mk_lemma_core(proof *pf, expr *fact) + { + ptr_buffer args; + expr_ref lemma(m); + + if (m.is_or(fact)) { + for (unsigned i = 0, sz = to_app(fact)->get_num_args(); i < sz; ++i) { + expr *a = to_app(fact)->get_arg(i); + if (!is_reduced(a)) + { args.push_back(a); } + } + } else if (!is_reduced(fact)) + { args.push_back(fact); } + + + if (args.size() == 0) { return pf; } + else if (args.size() == 1) { + lemma = args.get(0); + } else { + lemma = m.mk_or(args.size(), args.c_ptr()); + } + proof* res = m.mk_lemma(pf, lemma); + m_pinned.push_back(res); + + if (m_hyps.contains(lemma)) + { m_units.insert(lemma, res); } + return res; + } + + proof *mk_unit_resolution_core(unsigned num_args, proof* const *args) + { + + ptr_buffer pf_args; + pf_args.push_back(args [0]); + + app *cls_fact = to_app(m.get_fact(args[0])); + ptr_buffer cls; + if (m.is_or(cls_fact)) { + for (unsigned i = 0, sz = cls_fact->get_num_args(); i < sz; ++i) + { cls.push_back(cls_fact->get_arg(i)); } + } else { cls.push_back(cls_fact); } + + // construct new resovent + ptr_buffer new_fact_cls; + bool found; + // XXX quadratic + for (unsigned i = 0, sz = cls.size(); i < sz; ++i) { + found = false; + for (unsigned j = 1; j < num_args; ++j) { + if (m.is_complement(cls.get(i), m.get_fact(args [j]))) { + found = true; + pf_args.push_back(args [j]); + break; + } + } + if (!found) { + new_fact_cls.push_back(cls.get(i)); + } + } + + SASSERT(new_fact_cls.size() + pf_args.size() - 1 == cls.size()); + expr_ref new_fact(m); + new_fact = mk_or(m, new_fact_cls.size(), new_fact_cls.c_ptr()); + + // create new proof step + proof *res = m.mk_unit_resolution(pf_args.size(), pf_args.c_ptr(), new_fact); + m_pinned.push_back(res); + return res; + } + + // reduce all units, if any unit reduces to false return true and put its proof into out + bool reduce_units(proof_ref &out) + { + proof_ref res(m); + for (auto entry : m_units) { + reduce(entry.get_value(), res); + if (m.is_false(m.get_fact(res))) { + out = res; + return true; + } + res.reset(); + } + return false; + } + + +public: + reduce_hypotheses(ast_manager &m) : m(m), m_pinned(m) {} + + + void operator()(proof_ref &pr) + { + compute_marks(pr); + if (!reduce_units(pr)) { + reduce(pr.get(), pr); + } + reset(); + } +}; + +void reduce_hypotheses(proof_ref &pr) { + ast_manager &m = pr.get_manager(); + class reduce_hypotheses hypred(m); + hypred(pr); + DEBUG_CODE(proof_checker pc(m); + expr_ref_vector side(m); + SASSERT(pc.check(pr, side)); + ); +} + + + +#include "ast/ast_smt2_pp.h" + +class reduce_hypotheses0 { typedef obj_hashtable expr_set; ast_manager& m; // reference for any expression created by the tranformation @@ -85,7 +413,7 @@ class reduce_hypotheses { m_hyprefs.push_back(hyps); inherited = false; } - datalog::set_union(*hyps, *hyps1); + set_union(*hyps, *hyps1); } } } @@ -137,7 +465,7 @@ class reduce_hypotheses { } public: - reduce_hypotheses(ast_manager& m): m(m), m_refs(m) {} + reduce_hypotheses0(ast_manager& m): m(m), m_refs(m) {} void operator()(proof_ref& pr) { proof_ref tmp(m); @@ -416,7 +744,7 @@ public: void proof_utils::reduce_hypotheses(proof_ref& pr) { ast_manager& m = pr.get_manager(); - class reduce_hypotheses reduce(m); + class reduce_hypotheses0 reduce(m); reduce(pr); CTRACE("proof_utils", !is_closed(m, pr), tout << mk_pp(pr, m) << "\n";); } diff --git a/src/ast/proofs/proof_utils.h b/src/ast/proofs/proof_utils.h new file mode 100644 index 000000000..b953c834d --- /dev/null +++ b/src/ast/proofs/proof_utils.h @@ -0,0 +1,238 @@ +/*++ +Copyright (c) 2017 Microsoft Corporation + +Module Name: + + proof_utils.h + +Abstract: + Utilities to traverse and manipulate proofs + +Author: + Bernhard Gleiss + Arie Gurfinkel + Nikolaj Bjorner + +Revision History: + +--*/ + +#ifndef PROOF_UTILS_H_ +#define PROOF_UTILS_H_ +#include "ast/ast.h" +#include "ast/ast_pp.h" +#include "ast/rewriter/bool_rewriter.h" +#include "ast/proofs/proof_checker.h" + +/* + * iterator, which traverses the proof in depth-first post-order. + */ + +class proof_post_order { +public: + proof_post_order(proof* refutation, ast_manager& manager); + bool hasNext(); + proof* next(); + +private: + ptr_vector m_todo; + ast_mark m_visited; // the proof nodes we have already visited + ast_manager& m; +}; + +void reduce_hypotheses(proof_ref &pr); + + +class proof_utils { +public: + /** + \brief reduce the set of hypotheses used in the proof. + */ + static void reduce_hypotheses(proof_ref& pr); + + /** + \brief Check that a proof does not contain open hypotheses. + */ + static bool is_closed(ast_manager& m, proof* p); + + /** + \brief Permute unit resolution rule with th-lemma + */ + static void permute_unit_resolution(proof_ref& pr); + + /** + \brief Push instantiations created in hyper-resolutions up to leaves. + This produces a "ground" proof where leaves are annotated by instantiations. + */ + static void push_instantiations_up(proof_ref& pr); + + +}; + +class elim_aux_assertions { + + static bool matches_fact(expr_ref_vector &args, expr* &match) { + ast_manager &m = args.get_manager(); + expr *fact = args.back(); + for (unsigned i = 0, sz = args.size() - 1; i < sz; ++i) { + expr *arg = args.get(i); + if (m.is_proof(arg) && + m.has_fact(to_app(arg)) && + m.get_fact(to_app(arg)) == fact) { + match = arg; + return true; + } + } + return false; + } + + app_ref m_aux; +public: + elim_aux_assertions(app_ref aux) : m_aux(aux) {} + + void mk_or_core(expr_ref_vector &args, expr_ref &res) + { + ast_manager &m = args.get_manager(); + unsigned j = 0; + for (unsigned i = 0, sz = args.size(); i < sz; ++i) { + if (m.is_false(args.get(i))) { continue; } + if (i != j) { args [j] = args.get(i); } + ++j; + } + SASSERT(j >= 1); + res = j > 1 ? m.mk_or(j, args.c_ptr()) : args.get(0); + } + + void mk_app(func_decl *decl, expr_ref_vector &args, expr_ref &res) + { + ast_manager &m = args.get_manager(); + bool_rewriter brwr(m); + + if (m.is_or(decl)) + { mk_or_core(args, res); } + else if (m.is_iff(decl) && args.size() == 2) + // avoiding simplifying equalities. In particular, + // we don't want (= (not a) (not b)) to be reduced to (= a b) + { res = m.mk_iff(args.get(0), args.get(1)); } + else + { brwr.mk_app(decl, args.size(), args.c_ptr(), res); } + } + + void operator()(ast_manager &m, proof *pr, proof_ref &res) + { + DEBUG_CODE(proof_checker pc(m); + expr_ref_vector side(m); + SASSERT(pc.check(pr, side)); + ); + obj_map cache; + bool_rewriter brwr(m); + + // for reference counting of new proofs + app_ref_vector pinned(m); + + ptr_vector todo; + todo.push_back(pr); + + expr_ref not_aux(m); + not_aux = m.mk_not(m_aux); + + expr_ref_vector args(m); + + while (!todo.empty()) { + app *p, *r; + expr *a; + + p = todo.back(); + if (cache.find(pr, r)) { + todo.pop_back(); + continue; + } + + SASSERT(!todo.empty() || pr == p); + bool dirty = false; + unsigned todo_sz = todo.size(); + args.reset(); + for (unsigned i = 0, sz = p->get_num_args(); i < sz; ++i) { + expr* arg = p->get_arg(i); + if (arg == m_aux.get()) { + dirty = true; + args.push_back(m.mk_true()); + } else if (arg == not_aux.get()) { + dirty = true; + args.push_back(m.mk_false()); + } + // skip (asserted m_aux) + else if (m.is_asserted(arg, a) && a == m_aux.get()) { + dirty = true; + } + // skip (hypothesis m_aux) + else if (m.is_hypothesis(arg, a) && a == m_aux.get()) { + dirty = true; + } else if (is_app(arg) && cache.find(to_app(arg), r)) { + dirty |= (arg != r); + args.push_back(r); + } else if (is_app(arg)) + { todo.push_back(to_app(arg)); } + else + // -- not an app + { args.push_back(arg); } + + } + if (todo_sz < todo.size()) { + // -- process parents + args.reset(); + continue; + } + + // ready to re-create + app_ref newp(m); + if (!dirty) { newp = p; } + else if (m.is_unit_resolution(p)) { + if (args.size() == 2) + // unit resolution with m_aux that got collapsed to nothing + { newp = to_app(args.get(0)); } + else { + ptr_vector parents; + for (unsigned i = 0, sz = args.size() - 1; i < sz; ++i) + { parents.push_back(to_app(args.get(i))); } + SASSERT(parents.size() == args.size() - 1); + newp = m.mk_unit_resolution(parents.size(), parents.c_ptr()); + // XXX the old and new facts should be + // equivalent. The test here is much + // stronger. It might need to be relaxed. + SASSERT(m.get_fact(newp) == args.back()); + pinned.push_back(newp); + } + } else if (matches_fact(args, a)) { + newp = to_app(a); + } else { + expr_ref papp(m); + mk_app(p->get_decl(), args, papp); + newp = to_app(papp.get()); + pinned.push_back(newp); + } + cache.insert(p, newp); + todo.pop_back(); + CTRACE("virtual", + p->get_decl_kind() == PR_TH_LEMMA && + p->get_decl()->get_parameter(0).get_symbol() == "arith" && + p->get_decl()->get_num_parameters() > 1 && + p->get_decl()->get_parameter(1).get_symbol() == "farkas", + tout << "Old pf: " << mk_pp(p, m) << "\n" + << "New pf: " << mk_pp(newp, m) << "\n";); + } + + proof *r; + VERIFY(cache.find(pr, r)); + + DEBUG_CODE( + proof_checker pc(m); + expr_ref_vector side(m); + SASSERT(pc.check(r, side)); + ); + + res = r ; + } +}; + +#endif diff --git a/src/ast/rewriter/bit_blaster/bit_blaster_tpl_def.h b/src/ast/rewriter/bit_blaster/bit_blaster_tpl_def.h index cd66a5124..a80994f6c 100644 --- a/src/ast/rewriter/bit_blaster/bit_blaster_tpl_def.h +++ b/src/ast/rewriter/bit_blaster/bit_blaster_tpl_def.h @@ -272,7 +272,7 @@ void bit_blaster_tpl::mk_multiplier(unsigned sz, expr * const * a_bits, exp zero = m().mk_false(); vector< expr_ref_vector > pps; - pps.resize(sz, m()); + pps.resize(sz, expr_ref_vector(m())); for (unsigned i = 0; i < sz; i++) { checkpoint(); diff --git a/src/ast/rewriter/fpa_rewriter.cpp b/src/ast/rewriter/fpa_rewriter.cpp index 818336c75..e62c9346f 100644 --- a/src/ast/rewriter/fpa_rewriter.cpp +++ b/src/ast/rewriter/fpa_rewriter.cpp @@ -119,17 +119,15 @@ br_status fpa_rewriter::mk_to_fp(func_decl * f, unsigned num_args, expr * const // BV -> float SASSERT(bvs1 == sbits + ebits); unsynch_mpz_manager & mpzm = m_fm.mpz_manager(); - unsynch_mpq_manager & mpqm = m_fm.mpq_manager(); scoped_mpz sig(mpzm), exp(mpzm); const mpz & sm1 = m_fm.m_powers2(sbits - 1); const mpz & em1 = m_fm.m_powers2(ebits); - scoped_mpq q(mpqm); - mpqm.set(q, r1.to_mpq()); - SASSERT(mpzm.is_one(q.get().denominator())); + const mpq & q = r1.to_mpq(); + SASSERT(mpzm.is_one(q.denominator())); scoped_mpz z(mpzm); - z = q.get().numerator(); + z = q.numerator(); mpzm.rem(z, sm1, sig); mpzm.div(z, sm1, z); diff --git a/src/ast/scoped_proof.h b/src/ast/scoped_proof.h index 0a650ceb7..b2b3d7173 100644 --- a/src/ast/scoped_proof.h +++ b/src/ast/scoped_proof.h @@ -37,7 +37,7 @@ public: class scoped_proof : public scoped_proof_mode { public: - scoped_proof(ast_manager& m): scoped_proof_mode(m, PGM_FINE) {} + scoped_proof(ast_manager& m): scoped_proof_mode(m, PGM_ENABLED) {} }; class scoped_no_proof : public scoped_proof_mode { diff --git a/src/ast/substitution/substitution_tree.cpp b/src/ast/substitution/substitution_tree.cpp index 9befb582f..20d5f1590 100644 --- a/src/ast/substitution/substitution_tree.cpp +++ b/src/ast/substitution/substitution_tree.cpp @@ -256,7 +256,7 @@ void substitution_tree::insert(expr * new_expr) { sort * s = to_var(new_expr)->get_sort(); unsigned id = s->get_decl_id(); if (id >= m_vars.size()) - m_vars.resize(id+1, 0); + m_vars.resize(id+1); if (m_vars[id] == 0) m_vars[id] = alloc(var_ref_vector, m_manager); var_ref_vector * v = m_vars[id]; @@ -277,7 +277,7 @@ void substitution_tree::insert(app * new_expr) { unsigned id = d->get_decl_id(); if (id >= m_roots.size()) - m_roots.resize(id+1, 0); + m_roots.resize(id+1); if (!m_roots[id]) { // there is no tree for the function symbol heading new_expr diff --git a/src/ast/used_vars.cpp b/src/ast/used_vars.cpp index a1cd65feb..a3030f087 100644 --- a/src/ast/used_vars.cpp +++ b/src/ast/used_vars.cpp @@ -58,7 +58,7 @@ void used_vars::process(expr * n, unsigned delta) { if (idx >= delta) { idx = idx - delta; if (idx >= m_found_vars.size()) - m_found_vars.resize(idx + 1, 0); + m_found_vars.resize(idx + 1); m_found_vars[idx] = to_var(n)->get_sort(); } break; diff --git a/src/cmd_context/basic_cmds.cpp b/src/cmd_context/basic_cmds.cpp index 21b66febd..65c8860b1 100644 --- a/src/cmd_context/basic_cmds.cpp +++ b/src/cmd_context/basic_cmds.cpp @@ -20,6 +20,7 @@ Notes: #include "util/version.h" #include "ast/ast_smt_pp.h" #include "ast/ast_smt2_pp.h" +#include "ast/ast_pp_dot.h" #include "ast/ast_pp.h" #include "ast/array_decl_plugin.h" #include "ast/pp.h" @@ -202,6 +203,26 @@ ATOMIC_CMD(get_proof_cmd, "get-proof", "retrieve proof", { } }); +ATOMIC_CMD(get_proof_graph_cmd, "get-proof-graph", "retrieve proof and print it in graphviz", { + if (!ctx.produce_proofs()) + throw cmd_exception("proof construction is not enabled, use command (set-option :produce-proofs true)"); + if (!ctx.has_manager() || + ctx.cs_state() != cmd_context::css_unsat) + throw cmd_exception("proof is not available"); + proof_ref pr(ctx.m()); + pr = ctx.get_check_sat_result()->get_proof(); + if (pr == 0) + throw cmd_exception("proof is not available"); + if (ctx.well_sorted_check_enabled() && !is_well_sorted(ctx.m(), pr)) { + throw cmd_exception("proof is not well sorted"); + } + + context_params& params = ctx.params(); + const std::string& file = params.m_dot_proof_file; + std::ofstream out(file); + out << ast_pp_dot(pr) << std::endl; +}); + static void print_core(cmd_context& ctx) { ptr_vector core; ctx.get_check_sat_result()->get_unsat_core(core); @@ -840,6 +861,7 @@ void install_basic_cmds(cmd_context & ctx) { ctx.insert(alloc(get_assignment_cmd)); ctx.insert(alloc(get_assertions_cmd)); ctx.insert(alloc(get_proof_cmd)); + ctx.insert(alloc(get_proof_graph_cmd)); ctx.insert(alloc(get_unsat_core_cmd)); ctx.insert(alloc(set_option_cmd)); ctx.insert(alloc(get_option_cmd)); diff --git a/src/cmd_context/cmd_context.cpp b/src/cmd_context/cmd_context.cpp index ee36468a5..06a7cba19 100644 --- a/src/cmd_context/cmd_context.cpp +++ b/src/cmd_context/cmd_context.cpp @@ -492,6 +492,7 @@ cmd_context::~cmd_context() { finalize_tactic_cmds(); finalize_probes(); reset(true); + m_mc0 = 0; m_solver = 0; m_check_sat_result = 0; } @@ -775,7 +776,6 @@ bool cmd_context::is_func_decl(symbol const & s) const { } void cmd_context::insert(symbol const & s, func_decl * f) { - m_check_sat_result = 0; if (!m_check_logic(f)) { throw cmd_exception(m_check_logic.get_last_error()); } @@ -806,7 +806,6 @@ void cmd_context::insert(symbol const & s, func_decl * f) { } void cmd_context::insert(symbol const & s, psort_decl * p) { - m_check_sat_result = 0; if (m_psort_decls.contains(s)) { throw cmd_exception("sort already defined ", s); } @@ -820,7 +819,6 @@ void cmd_context::insert(symbol const & s, psort_decl * p) { void cmd_context::insert(symbol const & s, unsigned arity, sort *const* domain, expr * t) { expr_ref _t(t, m()); - m_check_sat_result = 0; if (m_builtin_decls.contains(s)) { throw cmd_exception("invalid macro/named expression, builtin symbol ", s); } @@ -1081,16 +1079,31 @@ void cmd_context::mk_app(symbol const & s, unsigned num_args, expr * const * arg if (fs.more_than_one()) throw cmd_exception("ambiguous constant reference, more than one constant with the same sort, use a qualified expression (as ) to disumbiguate ", s); func_decl * f = fs.first(); - if (f == 0) + if (f == 0) { throw cmd_exception("unknown constant ", s); + } if (f->get_arity() != 0) throw cmd_exception("invalid function application, missing arguments ", s); result = m().mk_const(f); } else { func_decl * f = fs.find(m(), num_args, args, range); - if (f == 0) - throw cmd_exception("unknown constant ", s); + if (f == 0) { + std::ostringstream buffer; + buffer << "unknown constant " << s << " "; + buffer << " ("; + bool first = true; + for (unsigned i = 0; i < num_args; ++i, first = false) { + if (!first) buffer << " "; + buffer << mk_pp(m().get_sort(args[i]), m()); + } + buffer << ") "; + if (range) buffer << mk_pp(range, m()) << " "; + for (unsigned i = 0; i < fs.get_num_entries(); ++i) { + buffer << "\ndeclared: " << mk_pp(fs.get_entry(i), m()) << " "; + } + throw cmd_exception(buffer.str().c_str()); + } if (well_sorted_check_enabled()) m().check_sort(f, num_args, args); result = m().mk_app(f, num_args, args); @@ -1250,8 +1263,8 @@ void cmd_context::reset(bool finalize) { reset_macros(); reset_func_decls(); restore_assertions(0); - if (m_solver) - m_solver = 0; + m_solver = 0; + m_mc0 = 0; m_scopes.reset(); m_opt = 0; m_pp_env = 0; @@ -1624,7 +1637,9 @@ void cmd_context::validate_check_sat_result(lbool r) { throw cmd_exception("check annotation that says unsat"); #else diagnostic_stream() << "BUG: incompleteness" << std::endl; - exit(ERR_INCOMPLETENESS); + // WORKAROUND: `exit()` causes LSan to be invoked and produce + // many false positives. + _Exit(ERR_INCOMPLETENESS); #endif } break; @@ -1634,7 +1649,9 @@ void cmd_context::validate_check_sat_result(lbool r) { throw cmd_exception("check annotation that says sat"); #else diagnostic_stream() << "BUG: unsoundness" << std::endl; - exit(ERR_UNSOUNDNESS); + // WORKAROUND: `exit()` causes LSan to be invoked and produce + // many false positives. + _Exit(ERR_UNSOUNDNESS); #endif } break; diff --git a/src/cmd_context/cmd_context.h b/src/cmd_context/cmd_context.h index abf19a487..7a3805762 100644 --- a/src/cmd_context/cmd_context.h +++ b/src/cmd_context/cmd_context.h @@ -194,6 +194,7 @@ protected: static std::ostringstream g_error_stream; + generic_model_converter_ref m_mc0; ast_manager * m_manager; bool m_own_manager; bool m_manager_initialized; @@ -304,7 +305,6 @@ protected: void erase_macro(symbol const& s); bool macros_find(symbol const& s, unsigned n, expr*const* args, expr*& t) const; - generic_model_converter_ref m_mc0; public: cmd_context(bool main_ctx = true, ast_manager * m = 0, symbol const & l = symbol::null); diff --git a/src/cmd_context/context_params.cpp b/src/cmd_context/context_params.cpp index 9a3339b84..78f4223fc 100644 --- a/src/cmd_context/context_params.cpp +++ b/src/cmd_context/context_params.cpp @@ -111,6 +111,9 @@ void context_params::set(char const * param, char const * value) { else if (p == "trace_file_name") { m_trace_file_name = value; } + else if (p == "dot_proof_file") { + m_dot_proof_file = value; + } else if (p == "unsat_core") { set_bool(m_unsat_core, param, value); } @@ -146,6 +149,7 @@ void context_params::updt_params(params_ref const & p) { m_dump_models = p.get_bool("dump_models", m_dump_models); m_trace = p.get_bool("trace", m_trace); m_trace_file_name = p.get_str("trace_file_name", "z3.log"); + m_dot_proof_file = p.get_str("dot_proof_file", "proof.dot"); m_unsat_core = p.get_bool("unsat_core", m_unsat_core); m_debug_ref_count = p.get_bool("debug_ref_count", m_debug_ref_count); m_smtlib2_compliant = p.get_bool("smtlib2_compliant", m_smtlib2_compliant); @@ -161,6 +165,7 @@ void context_params::collect_param_descrs(param_descrs & d) { d.insert("dump_models", CPK_BOOL, "dump models whenever check-sat returns sat", "false"); d.insert("trace", CPK_BOOL, "trace generation for VCC", "false"); d.insert("trace_file_name", CPK_STRING, "trace out file name (see option 'trace')", "z3.log"); + d.insert("dot_proof_file", CPK_STRING, "file in which to output graphical proofs", "proof.dot"); d.insert("debug_ref_count", CPK_BOOL, "debug support for AST reference counting", "false"); d.insert("smtlib2_compliant", CPK_BOOL, "enable/disable SMT-LIB 2.0 compliance", "false"); collect_solver_param_descrs(d); @@ -192,7 +197,7 @@ void context_params::get_solver_params(ast_manager const & m, params_ref & p, bo ast_manager * context_params::mk_ast_manager() { ast_manager * r = alloc(ast_manager, - m_proof ? PGM_FINE : PGM_DISABLED, + m_proof ? PGM_ENABLED : PGM_DISABLED, m_trace ? m_trace_file_name.c_str() : 0); if (m_smtlib2_compliant) r->enable_int_real_coercions(false); diff --git a/src/cmd_context/context_params.h b/src/cmd_context/context_params.h index c238af556..df62057fe 100644 --- a/src/cmd_context/context_params.h +++ b/src/cmd_context/context_params.h @@ -30,6 +30,7 @@ class context_params { public: bool m_auto_config; bool m_proof; + std::string m_dot_proof_file; bool m_interpolants; bool m_debug_ref_count; bool m_trace; diff --git a/src/cmd_context/interpolant_cmds.cpp b/src/cmd_context/interpolant_cmds.cpp index b5bbea18c..8b9f0ebd8 100644 --- a/src/cmd_context/interpolant_cmds.cpp +++ b/src/cmd_context/interpolant_cmds.cpp @@ -147,7 +147,7 @@ static void compute_interpolant_and_maybe_check(cmd_context & ctx, expr * t, par ast_manager &_m = ctx.m(); // TODO: the following is a HACK to enable proofs in the old smt solver // When we stop using that solver, this hack can be removed - scoped_proof_mode spm(_m,PGM_FINE); + scoped_proof_mode spm(_m,PGM_ENABLED); ctx.params().get_solver_params(_m, p, proofs_enabled, models_enabled, unsat_core_enabled); p.set_bool("proof", true); scoped_ptr sp = (ctx.get_interpolating_solver_factory())(_m, p, true, models_enabled, false, ctx.get_logic()); diff --git a/src/interp/iz3mgr.h b/src/interp/iz3mgr.h index e4c294059..0ad751326 100755 --- a/src/interp/iz3mgr.h +++ b/src/interp/iz3mgr.h @@ -57,12 +57,12 @@ typedef ast raw_ast; /** Wrapper around an ast pointer */ class ast_i { - protected: +protected: raw_ast *_ast; - public: +public: raw_ast * const &raw() const {return _ast;} ast_i(raw_ast *a){_ast = a;} - + ast_i(){_ast = 0;} bool eq(const ast_i &other) const { return _ast == other._ast; @@ -86,19 +86,19 @@ class ast_i { /** Reference counting verison of above */ class ast_r : public ast_i { ast_manager *_m; - public: - ast_r(ast_manager *m, raw_ast *a) : ast_i(a) { +public: + ast_r(ast_manager *m, raw_ast *a) : ast_i(a) { _m = m; m->inc_ref(a); } - + ast_r() {_m = 0;} - - ast_r(const ast_r &other) : ast_i(other) { + + ast_r(const ast_r &other) : ast_i(other) { _m = other._m; if (_m) _m->inc_ref(_ast); } - + ast_r &operator=(const ast_r &other) { if(_ast) _m->dec_ref(_ast); @@ -107,12 +107,12 @@ class ast_r : public ast_i { if (_m) _m->inc_ref(_ast); return *this; } - - ~ast_r(){ + + ~ast_r() { if(_ast) _m->dec_ref(_ast); } - + ast_manager *mgr() const {return _m;} }; diff --git a/src/interp/iz3translate.cpp b/src/interp/iz3translate.cpp index c59dd0178..e4730ea63 100755 --- a/src/interp/iz3translate.cpp +++ b/src/interp/iz3translate.cpp @@ -29,6 +29,7 @@ #include "interp/iz3profiling.h" #include "interp/iz3interp.h" #include "interp/iz3proof_itp.h" +#include "ast/ast_pp.h" #include #include @@ -1851,6 +1852,21 @@ public: } break; } + case PR_TRANSITIVITY_STAR: { + // assume the premises are x = y, y = z, z = u, u = v, .. + + ast x = arg(conc(prem(proof,0)),0); + ast y = arg(conc(prem(proof,0)),1); + ast z = arg(conc(prem(proof,1)),1); + res = iproof->make_transitivity(x,y,z,args[0],args[1]); + + for (unsigned i = 2; i < nprems; ++i) { + y = z; + z = arg(conc(prem(proof,i)),1); + res = iproof->make_transitivity(x,y,z,res,args[i]); + } + break; + } case PR_QUANT_INTRO: case PR_MONOTONICITY: { @@ -2029,6 +2045,7 @@ public: break; } default: + IF_VERBOSE(0, verbose_stream() << "Unsupported proof rule: " << expr_ref((expr*)proof.raw(), *proof.mgr()) << "\n";); // pfgoto(proof); // SASSERT(0 && "translate_main: unsupported proof rule"); throw unsupported(); diff --git a/src/interp/iz3translate.h b/src/interp/iz3translate.h index 519a252e0..8ecafbd3a 100755 --- a/src/interp/iz3translate.h +++ b/src/interp/iz3translate.h @@ -36,7 +36,7 @@ class iz3translation : public iz3base { /** This is thrown when the proof cannot be translated. */ struct unsupported: public iz3_exception { - unsupported(): iz3_exception("unsupported") {} + unsupported(): iz3_exception("unsupported") { } }; static iz3translation *create(iz3mgr &mgr, diff --git a/src/math/automata/symbolic_automata_def.h b/src/math/automata/symbolic_automata_def.h index 3be6a1da0..be38a60bc 100644 --- a/src/math/automata/symbolic_automata_def.h +++ b/src/math/automata/symbolic_automata_def.h @@ -24,6 +24,7 @@ Revision History: #include "math/automata/symbolic_automata.h" #include "util/hashtable.h" +#include "util/vector.h" @@ -311,7 +312,7 @@ symbolic_automata::mk_determinstic_param(automaton_t& a, bool flip_accepta s2id.insert(set, p_state_id++); // the index to the initial state is 0 id2s.push_back(set); - svector todo; //States to visit + ::vector todo; //States to visit todo.push_back(set); uint_set state; diff --git a/src/math/interval/interval.h b/src/math/interval/interval.h index bae644fac..db3c5a850 100644 --- a/src/math/interval/interval.h +++ b/src/math/interval/interval.h @@ -162,7 +162,7 @@ private: void checkpoint(); public: - interval_manager(reslimit& lim, C const & c); + interval_manager(reslimit& lim, C && c); ~interval_manager(); numeral_manager & m() const { return m_c.m(); } diff --git a/src/math/interval/interval_def.h b/src/math/interval/interval_def.h index e18d9edda..de3a5fa19 100644 --- a/src/math/interval/interval_def.h +++ b/src/math/interval/interval_def.h @@ -31,7 +31,7 @@ Revision History: // #define TRACE_NTH_ROOT template -interval_manager::interval_manager(reslimit& lim, C const & c): m_limit(lim), m_c(c) { +interval_manager::interval_manager(reslimit& lim, C && c): m_limit(lim), m_c(std::move(c)) { m().set(m_minus_one, -1); m().set(m_one, 1); m_pi_n = 0; diff --git a/src/math/polynomial/algebraic_numbers.cpp b/src/math/polynomial/algebraic_numbers.cpp index 22b50326b..9484c3c83 100644 --- a/src/math/polynomial/algebraic_numbers.cpp +++ b/src/math/polynomial/algebraic_numbers.cpp @@ -2632,10 +2632,14 @@ namespace algebraic_numbers { scoped_mpz neg_n(qm()); qm().set(neg_n, v.numerator()); qm().neg(neg_n); - mpz const coeffs[2] = { neg_n.get(), v.denominator() }; + unsynch_mpz_manager zmgr; + // FIXME: remove these copies + mpz coeffs[2] = { zmgr.dup(neg_n.get()), zmgr.dup(v.denominator()) }; out << "("; upm().display(out, 2, coeffs, "#"); out << ", 1)"; // first root of the polynomial d*# - n + zmgr.del(coeffs[0]); + zmgr.del(coeffs[1]); } else { algebraic_cell * c = a.to_algebraic(); @@ -2678,10 +2682,14 @@ namespace algebraic_numbers { scoped_mpz neg_n(qm()); qm().set(neg_n, v.numerator()); qm().neg(neg_n); - mpz const coeffs[2] = { neg_n.get(), v.denominator() }; + unsynch_mpz_manager zmgr; + // FIXME: remove these copies + mpz coeffs[2] = { zmgr.dup(neg_n.get()), zmgr.dup(v.denominator()) }; out << "(root-obj "; upm().display_smt2(out, 2, coeffs, "x"); out << " 1)"; // first root of the polynomial d*# - n + zmgr.del(coeffs[0]); + zmgr.del(coeffs[1]); } else { algebraic_cell * c = a.to_algebraic(); diff --git a/src/math/polynomial/polynomial.cpp b/src/math/polynomial/polynomial.cpp index 80669648e..d6d392148 100644 --- a/src/math/polynomial/polynomial.cpp +++ b/src/math/polynomial/polynomial.cpp @@ -3536,10 +3536,11 @@ namespace polynomial { iccp(p, max_var(p), i, c, pp); } - void pp(polynomial const * p, var x, polynomial_ref & pp) { + polynomial_ref pp(polynomial const * p, var x) { scoped_numeral i(m_manager); - polynomial_ref c(pm()); - iccp(p, x, i, c, pp); + polynomial_ref c(pm()), result(pm()); + iccp(p, x, i, c, result); + return result; } bool is_primitive(polynomial const * p, var x) { @@ -3598,7 +3599,7 @@ namespace polynomial { if (is_zero(rem)) { TRACE("polynomial", tout << "rem is zero...\npp_v: " << pp_v << "\n";); flip_sign_if_lm_neg(pp_v); - pp(pp_v, x, r); + r = pp(pp_v, x); r = mul(d_a, d_r, r); return; } @@ -3849,7 +3850,7 @@ namespace polynomial { TRACE("mgcd", tout << "new combined:\n" << C_star << "\n";); } } - pp(C_star, x, candidate); + candidate = pp(C_star, x); TRACE("mgcd", tout << "candidate:\n" << candidate << "\n";); scoped_numeral lc_candidate(m()); lc_candidate = univ_coeff(candidate, degree(candidate, x)); @@ -4821,10 +4822,9 @@ namespace polynomial { polynomial * mk_x_minus_y(var x, var y) { numeral zero(0); - numeral one(1); numeral minus_one; // It is not safe to initialize with -1 when numeral_manager is GF_2 m_manager.set(minus_one, -1); - numeral as[2] = { one, minus_one }; + numeral as[2] = { numeral(1), std::move(minus_one) }; var xs[2] = { x, y }; return mk_linear(2, as, xs, zero); } @@ -4844,8 +4844,7 @@ namespace polynomial { polynomial * mk_x_plus_y(var x, var y) { numeral zero(0); - numeral one(1); - numeral as[2] = { one, one }; + numeral as[2] = { numeral(1), numeral(1) }; var xs[2] = { x, y }; return mk_linear(2, as, xs, zero); } @@ -6619,8 +6618,8 @@ namespace polynomial { polynomial_ref cf1(pm()); m_wrapper.content(f1, x, cf1); polynomial_ref cf2(pm()); m_wrapper.content(f2, x, cf2); tout << "content(f1): " << cf1 << "\ncontent(f2): " << cf2 << "\n";); - pp(f1, x, f1); - pp(f2, x, f2); + f1 = pp(f1, x); + f2 = pp(f2, x); TRACE("factor", tout << "f1: " << f1 << "\nf2: " << f2 << "\n";); DEBUG_CODE({ polynomial_ref f1f2(pm()); @@ -7150,7 +7149,7 @@ namespace polynomial { } void manager::primitive(polynomial const * p, var x, polynomial_ref & pp) { - m_imp->pp(p, x, pp); + pp = m_imp->pp(p, x); } void manager::icpp(polynomial const * p, var x, numeral & i, polynomial_ref & c, polynomial_ref & pp) { diff --git a/src/math/polynomial/upolynomial_factorization_int.h b/src/math/polynomial/upolynomial_factorization_int.h index 640c5ad5c..ea2b51d8f 100644 --- a/src/math/polynomial/upolynomial_factorization_int.h +++ b/src/math/polynomial/upolynomial_factorization_int.h @@ -45,7 +45,7 @@ namespace upolynomial { for (unsigned i = 0; i < p.size(); ++ i) { numeral p_i; // no need to delete, we keep it pushed in zp_p zp_nm.set(p_i, p[i]); - zp_p.push_back(p_i); + zp_p.push_back(std::move(p_i)); } zp_upm.trim(zp_p); } diff --git a/src/math/simplex/sparse_matrix.h b/src/math/simplex/sparse_matrix.h index dc4ce8695..4edbb2b9d 100644 --- a/src/math/simplex/sparse_matrix.h +++ b/src/math/simplex/sparse_matrix.h @@ -35,7 +35,7 @@ namespace simplex { struct row_entry { numeral m_coeff; var_t m_var; - row_entry(numeral const& c, var_t v): m_coeff(c), m_var(v) {} + row_entry(numeral && c, var_t v) : m_coeff(std::move(c)), m_var(v) {} }; private: @@ -61,7 +61,7 @@ namespace simplex { int m_col_idx; int m_next_free_row_entry_idx; }; - _row_entry(numeral const & c, var_t v): row_entry(c, v), m_col_idx(0) {} + _row_entry(numeral && c, var_t v) : row_entry(std::move(c), v), m_col_idx(0) {} _row_entry() : row_entry(numeral(), dead_id), m_col_idx(0) {} bool is_dead() const { return row_entry::m_var == dead_id; } }; diff --git a/src/math/subpaving/subpaving_t_def.h b/src/math/subpaving/subpaving_t_def.h index 108b6aac3..3574787d8 100644 --- a/src/math/subpaving/subpaving_t_def.h +++ b/src/math/subpaving/subpaving_t_def.h @@ -739,7 +739,7 @@ void context_t::del_sum(polynomial * p) { template var context_t::mk_sum(numeral const & c, unsigned sz, numeral const * as, var const * xs) { - m_num_buffer.reserve(num_vars(), numeral()); + m_num_buffer.reserve(num_vars()); for (unsigned i = 0; i < sz; i++) { SASSERT(xs[i] < num_vars()); nm().set(m_num_buffer[xs[i]], as[i]); diff --git a/src/model/func_interp.cpp b/src/model/func_interp.cpp index 6699ef0e2..e458cc4b0 100644 --- a/src/model/func_interp.cpp +++ b/src/model/func_interp.cpp @@ -117,7 +117,7 @@ bool func_interp::is_fi_entry_expr(expr * e, ptr_vector & args) { (m_arity > 1 && (!m().is_and(c) || to_app(c)->get_num_args() != m_arity))) return false; - args.resize(m_arity, 0); + args.resize(m_arity); for (unsigned i = 0; i < m_arity; i++) { expr * ci = (m_arity == 1 && i == 0) ? c : to_app(c)->get_arg(i); diff --git a/src/muz/base/CMakeLists.txt b/src/muz/base/CMakeLists.txt index ec1ce47c3..6b0334664 100644 --- a/src/muz/base/CMakeLists.txt +++ b/src/muz/base/CMakeLists.txt @@ -10,7 +10,6 @@ z3_add_component(muz dl_rule_transformer.cpp dl_util.cpp hnf.cpp - proof_utils.cpp rule_properties.cpp COMPONENT_DEPENDENCIES aig_tactic diff --git a/src/muz/base/dl_boogie_proof.cpp b/src/muz/base/dl_boogie_proof.cpp index ec999c05e..8f4f9c02d 100644 --- a/src/muz/base/dl_boogie_proof.cpp +++ b/src/muz/base/dl_boogie_proof.cpp @@ -53,7 +53,7 @@ Example from Boogie: #include "muz/base/dl_boogie_proof.h" #include "model/model_pp.h" -#include "muz/base/proof_utils.h" +#include "ast/proofs/proof_utils.h" #include "ast/ast_pp.h" #include "ast/ast_util.h" diff --git a/src/muz/base/dl_context.cpp b/src/muz/base/dl_context.cpp index 97a2c841a..39e044ec3 100644 --- a/src/muz/base/dl_context.cpp +++ b/src/muz/base/dl_context.cpp @@ -453,7 +453,8 @@ namespace datalog { return new_pred; } - void context::add_rule(expr* rl, symbol const& name, unsigned bound) { + void context::add_rule(expr* rl, symbol const& name, unsigned bound) { + SASSERT(rl); m_rule_fmls.push_back(rl); m_rule_names.push_back(name); m_rule_bounds.push_back(bound); @@ -461,7 +462,7 @@ namespace datalog { void context::flush_add_rules() { datalog::rule_manager& rm = get_rule_manager(); - scoped_proof_mode _scp(m, generate_proof_trace()?PGM_FINE:PGM_DISABLED); + scoped_proof_mode _scp(m, generate_proof_trace()?PGM_ENABLED:PGM_DISABLED); while (m_rule_fmls_head < m_rule_fmls.size()) { expr* fml = m_rule_fmls[m_rule_fmls_head].get(); proof* p = generate_proof_trace()?m.mk_asserted(fml):0; diff --git a/src/muz/base/dl_rule.cpp b/src/muz/base/dl_rule.cpp index 367795c9b..4f832c4c9 100644 --- a/src/muz/base/dl_rule.cpp +++ b/src/muz/base/dl_rule.cpp @@ -141,7 +141,7 @@ namespace datalog { void rule_manager::mk_rule(expr* fml, proof* p, rule_set& rules, symbol const& name) { - scoped_proof_mode _sc(m, m_ctx.generate_proof_trace()?PGM_FINE:PGM_DISABLED); + scoped_proof_mode _sc(m, m_ctx.generate_proof_trace()?PGM_ENABLED:PGM_DISABLED); proof_ref pr(p, m); expr_ref fml1(m); bind_variables(fml, true, fml1); @@ -343,7 +343,7 @@ namespace datalog { } TRACE("dl", tout << rule_expr << "\n";); - scoped_proof_mode _sc(m, m_ctx.generate_proof_trace()?PGM_FINE:PGM_DISABLED); + scoped_proof_mode _sc(m, m_ctx.generate_proof_trace()?PGM_ENABLED:PGM_DISABLED); proof_ref pr(m); if (m_ctx.generate_proof_trace()) { pr = m.mk_asserted(rule_expr); diff --git a/src/muz/base/dl_util.h b/src/muz/base/dl_util.h index d04e4037c..c560ee28e 100644 --- a/src/muz/base/dl_util.h +++ b/src/muz/base/dl_util.h @@ -11,7 +11,7 @@ Abstract: Author: - Leonardo de Moura (leonardo) 2010-05-20. + Krystof Hoder 2010 Revision History: @@ -31,6 +31,7 @@ Revision History: #include "util/statistics.h" #include "util/stopwatch.h" #include "util/lbool.h" +#include "util/container_util.h" namespace datalog { @@ -381,129 +382,6 @@ namespace datalog { */ void apply_subst(expr_ref_vector& tgt, expr_ref_vector const& sub); - // ----------------------------------- - // - // container functions - // - // ----------------------------------- - - template - void set_intersection(Set1 & tgt, const Set2 & src) { - svector to_remove; - typename Set1::iterator vit = tgt.begin(); - typename Set1::iterator vend = tgt.end(); - for(;vit!=vend;++vit) { - typename Set1::data itm=*vit; - if(!src.contains(itm)) { - to_remove.push_back(itm); - } - } - while(!to_remove.empty()) { - tgt.remove(to_remove.back()); - to_remove.pop_back(); - } - } - - template - void set_difference(Set & tgt, const Set & to_remove) { - typename Set::iterator vit = to_remove.begin(); - typename Set::iterator vend = to_remove.end(); - for(;vit!=vend;++vit) { - typename Set::data itm=*vit; - tgt.remove(itm); - } - } - - template - void set_union(Set1 & tgt, const Set2 & to_add) { - typename Set2::iterator vit = to_add.begin(); - typename Set2::iterator vend = to_add.end(); - for(;vit!=vend;++vit) { - typename Set1::data itm=*vit; - tgt.insert(itm); - } - } - - void idx_set_union(idx_set & tgt, const idx_set & src); - - template - void unite_disjoint_maps(T & tgt, const T & src) { - typename T::iterator it = src.begin(); - typename T::iterator end = src.end(); - for(; it!=end; ++it) { - SASSERT(!tgt.contains(it->m_key)); - tgt.insert(it->m_key, it->m_value); - } - } - - template - void collect_map_range(T & acc, const U & map) { - typename U::iterator it = map.begin(); - typename U::iterator end = map.end(); - for(; it!=end; ++it) { - acc.push_back(it->m_value); - } - } - - - template - void print_container(const T & begin, const T & end, std::ostream & out) { - T it = begin; - out << "("; - bool first = true; - for(; it!=end; ++it) { - if(first) { first = false; } else { out << ","; } - out << (*it); - } - out << ")"; - } - - template - void print_container(const T & cont, std::ostream & out) { - print_container(cont.begin(), cont.end(), out); - } - - template - void print_container(const ref_vector & cont, std::ostream & out) { - print_container(cont.c_ptr(), cont.c_ptr() + cont.size(), out); - } - - template - void print_map(const T & cont, std::ostream & out) { - typename T::iterator it = cont.begin(); - typename T::iterator end = cont.end(); - out << "("; - bool first = true; - for(; it!=end; ++it) { - if(first) { first = false; } else { out << ","; } - out << it->m_key << "->" << it->m_value; - } - out << ")"; - } - - template - unsigned find_index(const It & begin, const It & end, const V & val) { - unsigned idx = 0; - It it = begin; - for(; it!=end; it++, idx++) { - if(*it==val) { - return idx; - } - } - return UINT_MAX; - } - - template - bool containers_equal(const T & begin1, const T & end1, const U & begin2, const U & end2) { - T it1 = begin1; - U it2 = begin2; - for(; it1!=end1 && it2!=end2; ++it1, ++it2) { - if(*it1!=*it2) { - return false; - } - } - return it1==end1 && it2==end2; - } template bool vectors_equal(const T & c1, const U & c2) { @@ -521,6 +399,8 @@ namespace datalog { return true; } + void idx_set_union(idx_set & tgt, const idx_set & src); + template struct default_obj_chash { unsigned operator()(T const& cont, unsigned i) const { diff --git a/src/muz/base/proof_utils.h b/src/muz/base/proof_utils.h deleted file mode 100644 index 0db831c4f..000000000 --- a/src/muz/base/proof_utils.h +++ /dev/null @@ -1,48 +0,0 @@ -/*++ -Copyright (c) 2012 Microsoft Corporation - -Module Name: - - proof_utils.h - -Abstract: - - Utilities for transforming proofs. - -Author: - - Nikolaj Bjorner (nbjorner) 2012-10-12. - -Revision History: - ---*/ -#ifndef PROOF_UTILS_H_ -#define PROOF_UTILS_H_ - -class proof_utils { -public: - /** - \brief reduce the set of hypotheses used in the proof. - */ - static void reduce_hypotheses(proof_ref& pr); - - /** - \brief Check that a proof does not contain open hypotheses. - */ - static bool is_closed(ast_manager& m, proof* p); - - /** - \brief Permute unit resolution rule with th-lemma - */ - static void permute_unit_resolution(proof_ref& pr); - - /** - \brief Push instantiations created in hyper-resolutions up to leaves. - This produces a "ground" proof where leaves are annotated by instantiations. - */ - static void push_instantiations_up(proof_ref& pr); - - -}; - -#endif diff --git a/src/muz/fp/dl_cmds.cpp b/src/muz/fp/dl_cmds.cpp index 42c614912..2610f821c 100644 --- a/src/muz/fp/dl_cmds.cpp +++ b/src/muz/fp/dl_cmds.cpp @@ -189,11 +189,12 @@ public: m_bound = bound; m_arg_idx++; } - virtual void reset(cmd_context & ctx) { m_dl_ctx->reset(); prepare(ctx); } + virtual void reset(cmd_context & ctx) { m_dl_ctx->reset(); prepare(ctx); m_t = nullptr; } virtual void prepare(cmd_context& ctx) { m_arg_idx = 0; m_name = symbol::null; m_bound = UINT_MAX; } virtual void finalize(cmd_context & ctx) { } virtual void execute(cmd_context & ctx) { + if (!m_t) throw cmd_exception("invalid rule, expected formula"); m_dl_ctx->add_rule(m_t, m_name, m_bound); } }; diff --git a/src/muz/pdr/pdr_context.cpp b/src/muz/pdr/pdr_context.cpp index fd734ea66..37d80e2d6 100644 --- a/src/muz/pdr/pdr_context.cpp +++ b/src/muz/pdr/pdr_context.cpp @@ -41,9 +41,8 @@ Notes: #include "ast/ast_smt2_pp.h" #include "qe/qe_lite.h" #include "ast/ast_ll_pp.h" -#include "ast/proof_checker/proof_checker.h" +#include "ast/proofs/proof_checker.h" #include "smt/smt_value_sort.h" -#include "muz/base/proof_utils.h" #include "muz/base/dl_boogie_proof.h" #include "ast/scoped_proof.h" #include "tactic/core/blast_term_ite_tactic.h" @@ -1825,7 +1824,7 @@ namespace pdr { m_core_generalizers.push_back(alloc(core_multi_generalizer, *this, 0)); } if (!classify.is_bool()) { - m.toggle_proof_mode(PGM_FINE); + m.toggle_proof_mode(PGM_ENABLED); m_fparams.m_arith_bound_prop = BP_NONE; m_fparams.m_arith_auto_config_simplex = true; m_fparams.m_arith_propagate_eqs = false; diff --git a/src/muz/pdr/pdr_farkas_learner.cpp b/src/muz/pdr/pdr_farkas_learner.cpp index 29037f180..4a77d2f5f 100644 --- a/src/muz/pdr/pdr_farkas_learner.cpp +++ b/src/muz/pdr/pdr_farkas_learner.cpp @@ -31,7 +31,7 @@ Revision History: #include "ast/rewriter/th_rewriter.h" #include "ast/ast_ll_pp.h" #include "tactic/arith/arith_bounds_tactic.h" -#include "muz/base/proof_utils.h" +#include "ast/proofs/proof_utils.h" #include "ast/reg_decl_plugins.h" @@ -372,7 +372,7 @@ namespace pdr { farkas_learner::farkas_learner(smt_params& params, ast_manager& outer_mgr) : m_proof_params(get_proof_params(params)), - m_pr(PGM_FINE), + m_pr(PGM_ENABLED), m_constr(0), m_combine_farkas_coefficients(true), p2o(m_pr, outer_mgr), @@ -733,8 +733,8 @@ namespace pdr { } else { expr_set* hyps3 = alloc(expr_set); - datalog::set_union(*hyps3, *hyps); - datalog::set_union(*hyps3, *hyps2); + set_union(*hyps3, *hyps); + set_union(*hyps3, *hyps2); hyps = hyps3; hyprefs.push_back(hyps); } @@ -795,7 +795,7 @@ namespace pdr { case PR_LEMMA: { expr_set* hyps2 = alloc(expr_set); hyprefs.push_back(hyps2); - datalog::set_union(*hyps2, *hyps); + set_union(*hyps2, *hyps); hyps = hyps2; expr* fml = m.get_fact(p); hyps->remove(fml); diff --git a/src/muz/pdr/pdr_generalizers.cpp b/src/muz/pdr/pdr_generalizers.cpp index b17d3f8b6..094379a0b 100644 --- a/src/muz/pdr/pdr_generalizers.cpp +++ b/src/muz/pdr/pdr_generalizers.cpp @@ -81,7 +81,7 @@ namespace pdr { m_gen(n, core0, uses_level1); new_cores.push_back(std::make_pair(core0, uses_level1)); obj_hashtable core_exprs, core1_exprs; - datalog::set_union(core_exprs, core0); + set_union(core_exprs, core0); for (unsigned i = 0; i < old_core.size(); ++i) { expr* lit = old_core[i].get(); if (core_exprs.contains(lit)) { @@ -94,8 +94,8 @@ namespace pdr { if (core1.size() < old_core.size()) { new_cores.push_back(std::make_pair(core1, uses_level1)); core1_exprs.reset(); - datalog::set_union(core1_exprs, core1); - datalog::set_intersection(core_exprs, core1_exprs); + set_union(core1_exprs, core1); + set_intersection(core_exprs, core1_exprs); } } } diff --git a/src/muz/rel/dl_instruction.h b/src/muz/rel/dl_instruction.h index c29681f37..56dd249a5 100644 --- a/src/muz/rel/dl_instruction.h +++ b/src/muz/rel/dl_instruction.h @@ -128,7 +128,7 @@ namespace datalog { void set_reg(reg_idx i, reg_type val) { if (i >= m_registers.size()) { check_overflow(i); - m_registers.resize(i+1,0); + m_registers.resize(i+1); } if (m_registers[i]) { m_registers[i]->deallocate(); diff --git a/src/muz/rel/dl_mk_explanations.cpp b/src/muz/rel/dl_mk_explanations.cpp index fd13978d2..c4fb57eeb 100644 --- a/src/muz/rel/dl_mk_explanations.cpp +++ b/src/muz/rel/dl_mk_explanations.cpp @@ -465,7 +465,7 @@ namespace datalog { unsigned sz = r.get_signature().size(); ptr_vector subst_arg; - subst_arg.resize(sz, 0); + subst_arg.resize(sz); unsigned ofs = sz-1; for (unsigned i=0; iremove(fml); diff --git a/src/muz/spacer/spacer_itp_solver.h b/src/muz/spacer/spacer_itp_solver.h index 450e2f197..6fc67a243 100644 --- a/src/muz/spacer/spacer_itp_solver.h +++ b/src/muz/spacer/spacer_itp_solver.h @@ -138,8 +138,8 @@ public: {return m_solver.get_num_assumptions();} virtual expr * get_assumption(unsigned idx) const {return m_solver.get_assumption(idx);} - virtual std::ostream &display(std::ostream &out) const - {m_solver.display(out); return out;} + virtual std::ostream &display(std::ostream &out, unsigned n, expr* const* es) const + { return m_solver.display(out, n, es); } /* check_sat_result interface */ @@ -174,7 +174,7 @@ public: public: scoped_bg(itp_solver &s) : m_s(s), m_bg_sz(m_s.get_num_bg()) {} ~scoped_bg() - {if(m_s.get_num_bg() > m_bg_sz) { m_s.pop_bg(m_s.get_num_bg() - m_bg_sz); }} + {if (m_s.get_num_bg() > m_bg_sz) { m_s.pop_bg(m_s.get_num_bg() - m_bg_sz); }} }; }; } diff --git a/src/muz/spacer/spacer_legacy_frames.cpp b/src/muz/spacer/spacer_legacy_frames.cpp index 9c302e5fd..679736add 100644 --- a/src/muz/spacer/spacer_legacy_frames.cpp +++ b/src/muz/spacer/spacer_legacy_frames.cpp @@ -23,9 +23,9 @@ #include "ast/ast_smt2_pp.h" #include "ast/ast_ll_pp.h" #include "ast/ast_util.h" -#include "ast/proof_checker/proof_checker.h" +#include "ast/proofs/proof_checker.h" #include "smt/smt_value_sort.h" -#include "muz/base/proof_utils.h" +#include "ast/proofs/proof_utils.h" #include "ast/scoped_proof.h" #include "muz/spacer/spacer_qe_project.h" #include "tactic/core/blast_term_ite_tactic.h" diff --git a/src/muz/spacer/spacer_min_cut.cpp b/src/muz/spacer/spacer_min_cut.cpp deleted file mode 100644 index 22ff81a80..000000000 --- a/src/muz/spacer/spacer_min_cut.cpp +++ /dev/null @@ -1,289 +0,0 @@ -/*++ -Copyright (c) 2017 Arie Gurfinkel - -Module Name: - - spacer_min_cut.cpp - -Abstract: - min cut solver - -Author: - Bernhard Gleiss - -Revision History: - - ---*/ -#include "muz/spacer/spacer_min_cut.h" - -namespace spacer { - - spacer_min_cut::spacer_min_cut() - { - m_n = 2; - - // push back two empty vectors for source and sink - m_edges.push_back(vector>()); - m_edges.push_back(vector>()); - } - - unsigned spacer_min_cut::new_node() - { - return m_n++; - } - - void spacer_min_cut::add_edge(unsigned int i, unsigned int j, unsigned int capacity) - { - if (i >= m_edges.size()) - { - m_edges.resize(i + 1); - } - m_edges[i].insert(std::make_pair(j, 1)); - STRACE("spacer.mincut", - verbose_stream() << "adding edge (" << i << "," << j << ")\n"; - ); - - } - - void spacer_min_cut::compute_min_cut(vector& cut_nodes) - { - if (m_n == 2) - { - return; - } - - m_d.resize(m_n); - m_pred.resize(m_n); - - // compute initial distances and number of nodes - compute_initial_distances(); - - unsigned i = 0; - - while (m_d[0] < m_n) - { - unsigned j = get_admissible_edge(i); - - if (j < m_n) - { - // advance(i) - m_pred[j] = i; - i = j; - - // if i is the sink, augment path - if (i == 1) - { - augment_path(); - i = 0; - } - } - else - { - // retreat - compute_distance(i); - if (i != 0) - { - i = m_pred[i]; - } - } - } - - // split nodes into reachable and unreachable ones - vector reachable(m_n); - compute_reachable_nodes(reachable); - - // find all edges between reachable and unreachable nodes and for each such edge, add corresponding lemma to unsat-core - compute_cut_and_add_lemmas(reachable, cut_nodes); - } - - void spacer_min_cut::compute_initial_distances() - { - vector todo; - vector visited(m_n); - - todo.push_back(0); // start at the source, since we do postorder traversel - - while (!todo.empty()) - { - unsigned current = todo.back(); - - // if we haven't already visited current - if (!visited[current]) { - bool existsUnvisitedParent = false; - - // add unprocessed parents to stack for DFS. If there is at least one unprocessed parent, don't compute the result - // for current now, but wait until those unprocessed parents are processed. - for (unsigned i = 0, sz = m_edges[current].size(); i < sz; ++i) - { - unsigned parent = m_edges[current][i].first; - - // if we haven't visited the current parent yet - if(!visited[parent]) - { - // add it to the stack - todo.push_back(parent); - existsUnvisitedParent = true; - } - } - - // if we already visited all parents, we can visit current too - if (!existsUnvisitedParent) { - visited[current] = true; - todo.pop_back(); - - compute_distance(current); // I.H. all parent distances are already computed - } - } - else { - todo.pop_back(); - } - } - } - - unsigned spacer_min_cut::get_admissible_edge(unsigned i) - { - for (const auto& pair : m_edges[i]) - { - if (pair.second > 0 && m_d[i] == m_d[pair.first] + 1) - { - return pair.first; - } - } - return m_n; // no element found - } - - void spacer_min_cut::augment_path() - { - // find bottleneck capacity - unsigned max = std::numeric_limits::max(); - unsigned k = 1; - while (k != 0) - { - unsigned l = m_pred[k]; - for (const auto& pair : m_edges[l]) - { - if (pair.first == k) - { - if (max > pair.second) - { - max = pair.second; - } - } - } - k = l; - } - - k = 1; - while (k != 0) - { - unsigned l = m_pred[k]; - - // decrease capacity - for (auto& pair : m_edges[l]) - { - if (pair.first == k) - { - pair.second -= max; - } - } - // increase reverse flow - bool already_exists = false; - for (auto& pair : m_edges[k]) - { - if (pair.first == l) - { - already_exists = true; - pair.second += max; - } - } - if (!already_exists) - { - m_edges[k].insert(std::make_pair(l, max)); - } - k = l; - } - } - - void spacer_min_cut::compute_distance(unsigned i) - { - if (i == 1) // sink node - { - m_d[1] = 0; - } - else - { - unsigned min = std::numeric_limits::max(); - - // find edge (i,j) with positive residual capacity and smallest distance - for (const auto& pair : m_edges[i]) - { - if (pair.second > 0) - { - unsigned tmp = m_d[pair.first] + 1; - if (tmp < min) - { - min = tmp; - } - } - } - m_d[i] = min; - } - } - - void spacer_min_cut::compute_reachable_nodes(vector& reachable) - { - vector todo; - - todo.push_back(0); - while (!todo.empty()) - { - unsigned current = todo.back(); - todo.pop_back(); - - if (!reachable[current]) - { - reachable[current] = true; - - for (const auto& pair : m_edges[current]) - { - if (pair.second > 0) - { - todo.push_back(pair.first); - } - } - } - } - } - - void spacer_min_cut::compute_cut_and_add_lemmas(vector& reachable, vector& cut_nodes) - { - vector todo; - vector visited(m_n); - - todo.push_back(0); - while (!todo.empty()) - { - unsigned current = todo.back(); - todo.pop_back(); - - if (!visited[current]) - { - visited[current] = true; - - for (const auto& pair : m_edges[current]) - { - unsigned successor = pair.first; - if (reachable[successor]) - { - todo.push_back(successor); - } - else - { - cut_nodes.push_back(successor); - } - } - } - } - } -} diff --git a/src/muz/spacer/spacer_min_cut.h b/src/muz/spacer/spacer_min_cut.h deleted file mode 100644 index c73a8d3d3..000000000 --- a/src/muz/spacer/spacer_min_cut.h +++ /dev/null @@ -1,53 +0,0 @@ -/*++ -Copyright (c) 2017 Arie Gurfinkel - -Module Name: - - spacer_min_cut.h - -Abstract: - min cut solver - -Author: - Bernhard Gleiss - -Revision History: - - ---*/ - -#ifndef _SPACER_MIN_CUT_H_ -#define _SPACER_MIN_CUT_H_ - -#include "ast/ast.h" -#include "util/vector.h" - -namespace spacer { - - class spacer_min_cut { - public: - spacer_min_cut(); - - unsigned new_node(); - void add_edge(unsigned i, unsigned j, unsigned capacity); - void compute_min_cut(vector& cut_nodes); - - private: - - unsigned m_n; // number of vertices in the graph - - vector > > m_edges; // map from node to all outgoing edges together with their weights (also contains "reverse edges") - vector m_d; // approximation of distance from node to sink in residual graph - vector m_pred; // predecessor-information for reconstruction of augmenting path - vector m_node_to_formula; // maps each node to the corresponding formula in the original proof - - void compute_initial_distances(); - unsigned get_admissible_edge(unsigned i); - void augment_path(); - void compute_distance(unsigned i); - void compute_reachable_nodes(vector& reachable); - void compute_cut_and_add_lemmas(vector& reachable, vector& cut_nodes); - }; -} - -#endif diff --git a/src/muz/spacer/spacer_proof_utils.cpp b/src/muz/spacer/spacer_proof_utils.cpp deleted file mode 100644 index 6edb29881..000000000 --- a/src/muz/spacer/spacer_proof_utils.cpp +++ /dev/null @@ -1,332 +0,0 @@ -/*++ -Copyright (c) 2017 Arie Gurfinkel - -Module Name: - - spacer_proof_utils.cpp - -Abstract: - Utilities to traverse and manipulate proofs - -Author: - Bernhard Gleiss - Arie Gurfinkel - -Revision History: - ---*/ - -#include "muz/spacer/spacer_proof_utils.h" -#include "ast/ast_util.h" -#include "ast/ast_pp.h" - -#include "ast/proof_checker/proof_checker.h" - -namespace spacer { - -ProofIteratorPostOrder::ProofIteratorPostOrder(proof* root, ast_manager& manager) : m(manager) -{m_todo.push_back(root);} - -bool ProofIteratorPostOrder::hasNext() -{return !m_todo.empty();} - -/* - * iterative post-order depth-first search (DFS) through the proof DAG - */ -proof* ProofIteratorPostOrder::next() -{ - while (!m_todo.empty()) { - proof* currentNode = m_todo.back(); - - // if we haven't already visited the current unit - if (!m_visited.is_marked(currentNode)) { - bool existsUnvisitedParent = false; - - // add unprocessed premises to stack for DFS. If there is at least one unprocessed premise, don't compute the result - // for currentProof now, but wait until those unprocessed premises are processed. - for (unsigned i = 0; i < m.get_num_parents(currentNode); ++i) { - SASSERT(m.is_proof(currentNode->get_arg(i))); - proof* premise = to_app(currentNode->get_arg(i)); - - // if we haven't visited the current premise yet - if (!m_visited.is_marked(premise)) { - // add it to the stack - m_todo.push_back(premise); - existsUnvisitedParent = true; - } - } - - // if we already visited all parent-inferences, we can visit the inference too - if (!existsUnvisitedParent) { - m_visited.mark(currentNode, true); - m_todo.pop_back(); - return currentNode; - } - } else { - m_todo.pop_back(); - } - } - // we have already iterated through all inferences - return NULL; -} - - -class reduce_hypotheses { - ast_manager &m; - // tracking all created expressions - expr_ref_vector m_pinned; - - // cache for the transformation - obj_map m_cache; - - // map from unit literals to their hypotheses-free derivations - obj_map m_units; - - // -- all hypotheses in the the proof - obj_hashtable m_hyps; - - // marks hypothetical proofs - ast_mark m_hypmark; - - - // stack - ptr_vector m_todo; - - void reset() - { - m_cache.reset(); - m_units.reset(); - m_hyps.reset(); - m_hypmark.reset(); - m_pinned.reset(); - } - - bool compute_mark1(proof *pr) - { - bool hyp_mark = false; - // lemmas clear all hypotheses - if (!m.is_lemma(pr)) { - for (unsigned i = 0, sz = m.get_num_parents(pr); i < sz; ++i) { - if (m_hypmark.is_marked(m.get_parent(pr, i))) { - hyp_mark = true; - break; - } - } - } - m_hypmark.mark(pr, hyp_mark); - return hyp_mark; - } - - void compute_marks(proof* pr) - { - proof *p; - ProofIteratorPostOrder pit(pr, m); - while (pit.hasNext()) { - p = pit.next(); - if (m.is_hypothesis(p)) { - m_hypmark.mark(p, true); - m_hyps.insert(m.get_fact(p)); - } else { - bool hyp_mark = compute_mark1(p); - // collect units that are hyp-free and are used as hypotheses somewhere - if (!hyp_mark && m.has_fact(p) && m_hyps.contains(m.get_fact(p))) - { m_units.insert(m.get_fact(p), p); } - } - } - } - void find_units(proof *pr) - { - // optional. not implemented yet. - } - - void reduce(proof* pf, proof_ref &out) - { - proof *res = NULL; - - m_todo.reset(); - m_todo.push_back(pf); - ptr_buffer args; - bool dirty = false; - - while (!m_todo.empty()) { - proof *p, *tmp, *pp; - unsigned todo_sz; - - p = m_todo.back(); - if (m_cache.find(p, tmp)) { - res = tmp; - m_todo.pop_back(); - continue; - } - - dirty = false; - args.reset(); - todo_sz = m_todo.size(); - for (unsigned i = 0, sz = m.get_num_parents(p); i < sz; ++i) { - pp = m.get_parent(p, i); - if (m_cache.find(pp, tmp)) { - args.push_back(tmp); - dirty = dirty || pp != tmp; - } else { - m_todo.push_back(pp); - } - } - - if (todo_sz < m_todo.size()) { continue; } - else { m_todo.pop_back(); } - - if (m.is_hypothesis(p)) { - // hyp: replace by a corresponding unit - if (m_units.find(m.get_fact(p), tmp)) { - res = tmp; - } else { res = p; } - } - - else if (!dirty) { res = p; } - - else if (m.is_lemma(p)) { - //lemma: reduce the premise; remove reduced consequences from conclusion - SASSERT(args.size() == 1); - res = mk_lemma_core(args.get(0), m.get_fact(p)); - compute_mark1(res); - } else if (m.is_unit_resolution(p)) { - // unit: reduce untis; reduce the first premise; rebuild unit resolution - res = mk_unit_resolution_core(args.size(), args.c_ptr()); - compute_mark1(res); - } else { - // other: reduce all premises; reapply - if (m.has_fact(p)) { args.push_back(to_app(m.get_fact(p))); } - SASSERT(p->get_decl()->get_arity() == args.size()); - res = m.mk_app(p->get_decl(), args.size(), (expr * const*)args.c_ptr()); - m_pinned.push_back(res); - compute_mark1(res); - } - - SASSERT(res); - m_cache.insert(p, res); - - if (m.has_fact(res) && m.is_false(m.get_fact(res))) { break; } - } - - out = res; - } - - // returns true if (hypothesis (not a)) would be reduced - bool is_reduced(expr *a) - { - expr_ref e(m); - if (m.is_not(a)) { e = to_app(a)->get_arg(0); } - else { e = m.mk_not(a); } - - return m_units.contains(e); - } - proof *mk_lemma_core(proof *pf, expr *fact) - { - ptr_buffer args; - expr_ref lemma(m); - - if (m.is_or(fact)) { - for (unsigned i = 0, sz = to_app(fact)->get_num_args(); i < sz; ++i) { - expr *a = to_app(fact)->get_arg(i); - if (!is_reduced(a)) - { args.push_back(a); } - } - } else if (!is_reduced(fact)) - { args.push_back(fact); } - - - if (args.size() == 0) { return pf; } - else if (args.size() == 1) { - lemma = args.get(0); - } else { - lemma = m.mk_or(args.size(), args.c_ptr()); - } - proof* res = m.mk_lemma(pf, lemma); - m_pinned.push_back(res); - - if (m_hyps.contains(lemma)) - { m_units.insert(lemma, res); } - return res; - } - - proof *mk_unit_resolution_core(unsigned num_args, proof* const *args) - { - - ptr_buffer pf_args; - pf_args.push_back(args [0]); - - app *cls_fact = to_app(m.get_fact(args[0])); - ptr_buffer cls; - if (m.is_or(cls_fact)) { - for (unsigned i = 0, sz = cls_fact->get_num_args(); i < sz; ++i) - { cls.push_back(cls_fact->get_arg(i)); } - } else { cls.push_back(cls_fact); } - - // construct new resovent - ptr_buffer new_fact_cls; - bool found; - // XXX quadratic - for (unsigned i = 0, sz = cls.size(); i < sz; ++i) { - found = false; - for (unsigned j = 1; j < num_args; ++j) { - if (m.is_complement(cls.get(i), m.get_fact(args [j]))) { - found = true; - pf_args.push_back(args [j]); - break; - } - } - if (!found) { - new_fact_cls.push_back(cls.get(i)); - } - } - - SASSERT(new_fact_cls.size() + pf_args.size() - 1 == cls.size()); - expr_ref new_fact(m); - new_fact = mk_or(m, new_fact_cls.size(), new_fact_cls.c_ptr()); - - // create new proof step - proof *res = m.mk_unit_resolution(pf_args.size(), pf_args.c_ptr(), new_fact); - m_pinned.push_back(res); - return res; - } - - // reduce all units, if any unit reduces to false return true and put its proof into out - bool reduce_units(proof_ref &out) - { - proof_ref res(m); - for (auto entry : m_units) { - reduce(entry.get_value(), res); - if (m.is_false(m.get_fact(res))) { - out = res; - return true; - } - res.reset(); - } - return false; - } - - -public: - reduce_hypotheses(ast_manager &m) : m(m), m_pinned(m) {} - - - void operator()(proof_ref &pr) - { - compute_marks(pr); - if (!reduce_units(pr)) { - reduce(pr.get(), pr); - } - reset(); - } -}; -void reduce_hypotheses(proof_ref &pr) -{ - ast_manager &m = pr.get_manager(); - class reduce_hypotheses hypred(m); - hypred(pr); - DEBUG_CODE(proof_checker pc(m); - expr_ref_vector side(m); - SASSERT(pc.check(pr, side)); - ); -} -} diff --git a/src/muz/spacer/spacer_proof_utils.h b/src/muz/spacer/spacer_proof_utils.h deleted file mode 100644 index f2897f7ec..000000000 --- a/src/muz/spacer/spacer_proof_utils.h +++ /dev/null @@ -1,43 +0,0 @@ -/*++ -Copyright (c) 2017 Arie Gurfinkel - -Module Name: - - spacer_proof_utils.cpp - -Abstract: - Utilities to traverse and manipulate proofs - -Author: - Bernhard Gleiss - Arie Gurfinkel - -Revision History: - ---*/ - -#ifndef _SPACER_PROOF_UTILS_H_ -#define _SPACER_PROOF_UTILS_H_ -#include "ast/ast.h" - -namespace spacer { -/* - * iterator, which traverses the proof in depth-first post-order. - */ -class ProofIteratorPostOrder { -public: - ProofIteratorPostOrder(proof* refutation, ast_manager& manager); - bool hasNext(); - proof* next(); - -private: - ptr_vector m_todo; - ast_mark m_visited; // the proof nodes we have already visited - - ast_manager& m; -}; - - -void reduce_hypotheses(proof_ref &pr); -} -#endif diff --git a/src/muz/spacer/spacer_qe_project.cpp b/src/muz/spacer/spacer_qe_project.cpp index dd6472224..9f4f4e4fe 100644 --- a/src/muz/spacer/spacer_qe_project.cpp +++ b/src/muz/spacer/spacer_qe_project.cpp @@ -66,7 +66,6 @@ class peq { app_ref m_peq; // partial equality application app_ref m_eq; // equivalent std equality using def. of partial eq array_util m_arr_u; - ast_eq_proc m_eq_proc; // for checking if two asts are equal public: static const char* PARTIAL_EQ; @@ -102,7 +101,7 @@ peq::peq (app* p, ast_manager& m): VERIFY (is_partial_eq (p)); SASSERT (m_arr_u.is_array (m_lhs) && m_arr_u.is_array (m_rhs) && - m_eq_proc (m.get_sort (m_lhs), m.get_sort (m_rhs))); + ast_eq_proc() (m.get_sort (m_lhs), m.get_sort (m_rhs))); for (unsigned i = 2; i < p->get_num_args (); i++) { m_diff_indices.push_back (p->get_arg (i)); } @@ -121,7 +120,7 @@ peq::peq (expr* lhs, expr* rhs, unsigned num_indices, expr * const * diff_indice { SASSERT (m_arr_u.is_array (lhs) && m_arr_u.is_array (rhs) && - m_eq_proc (m.get_sort (lhs), m.get_sort (rhs))); + ast_eq_proc() (m.get_sort (lhs), m.get_sort (rhs))); ptr_vector sorts; sorts.push_back (m.get_sort (m_lhs)); sorts.push_back (m.get_sort (m_rhs)); diff --git a/src/muz/spacer/spacer_unsat_core_learner.cpp b/src/muz/spacer/spacer_unsat_core_learner.cpp index 222ca146c..d478b1e8f 100644 --- a/src/muz/spacer/spacer_unsat_core_learner.cpp +++ b/src/muz/spacer/spacer_unsat_core_learner.cpp @@ -41,7 +41,7 @@ void unsat_core_learner::compute_unsat_core(proof *root, expr_set& asserted_b, e // transform proof in order to get a proof which is better suited for unsat-core-extraction proof_ref pr(root, m); - spacer::reduce_hypotheses(pr); + reduce_hypotheses(pr); STRACE("spacer.unsat_core_learner", verbose_stream() << "Reduced proof:\n" << mk_ismt2_pp(pr, m) << "\n"; ); @@ -50,7 +50,7 @@ void unsat_core_learner::compute_unsat_core(proof *root, expr_set& asserted_b, e collect_symbols_b(asserted_b); // traverse proof - ProofIteratorPostOrder it(root, m); + proof_post_order it(root, m); while (it.hasNext()) { proof* currentNode = it.next(); @@ -138,7 +138,7 @@ void unsat_core_learner::compute_unsat_core(proof *root, expr_set& asserted_b, e std::unordered_map id_to_small_id; unsigned counter = 0; - ProofIteratorPostOrder it2(root, m); + proof_post_order it2(root, m); while (it2.hasNext()) { proof* currentNode = it2.next(); diff --git a/src/muz/spacer/spacer_unsat_core_learner.h b/src/muz/spacer/spacer_unsat_core_learner.h index 6ee7c3b37..a7c9f6aa7 100644 --- a/src/muz/spacer/spacer_unsat_core_learner.h +++ b/src/muz/spacer/spacer_unsat_core_learner.h @@ -20,7 +20,7 @@ Revision History: #include "ast/ast.h" #include "muz/spacer/spacer_util.h" -#include "muz/spacer/spacer_proof_utils.h" +#include "ast/proofs/proof_utils.h" namespace spacer { diff --git a/src/muz/spacer/spacer_unsat_core_plugin.cpp b/src/muz/spacer/spacer_unsat_core_plugin.cpp index 0d90d2653..af9230713 100644 --- a/src/muz/spacer/spacer_unsat_core_plugin.cpp +++ b/src/muz/spacer/spacer_unsat_core_plugin.cpp @@ -20,13 +20,13 @@ Revision History: #include "ast/rewriter/bool_rewriter.h" #include "ast/arith_decl_plugin.h" +#include "ast/proofs/proof_utils.h" #include "solver/solver.h" #include "smt/smt_farkas_util.h" #include "smt/smt_solver.h" -#include "muz/spacer/spacer_proof_utils.h" #include "muz/spacer/spacer_matrix.h" #include "muz/spacer/spacer_unsat_core_plugin.h" #include "muz/spacer/spacer_unsat_core_learner.h" @@ -735,7 +735,7 @@ void unsat_core_plugin_farkas_lemma::compute_linear_combination(const vector cut_nodes; + unsigned_vector cut_nodes; m_min_cut.compute_min_cut(cut_nodes); for (unsigned cut_node : cut_nodes) diff --git a/src/muz/spacer/spacer_unsat_core_plugin.h b/src/muz/spacer/spacer_unsat_core_plugin.h index 743d7af4a..96d03140c 100644 --- a/src/muz/spacer/spacer_unsat_core_plugin.h +++ b/src/muz/spacer/spacer_unsat_core_plugin.h @@ -19,7 +19,7 @@ Revision History: #define _SPACER_UNSAT_CORE_PLUGIN_H_ #include "ast/ast.h" -#include "muz/spacer/spacer_min_cut.h" +#include "util/min_cut.h" namespace spacer { @@ -109,7 +109,7 @@ private: vector m_node_to_formula; // maps each node to the corresponding formula in the original proof - spacer_min_cut m_min_cut; + min_cut m_min_cut; }; } #endif diff --git a/src/muz/spacer/spacer_util.cpp b/src/muz/spacer/spacer_util.cpp index a277c9ed6..83042cd6d 100644 --- a/src/muz/spacer/spacer_util.cpp +++ b/src/muz/spacer/spacer_util.cpp @@ -72,73 +72,67 @@ namespace spacer { // model_evaluator_util::model_evaluator_util(ast_manager& m) : - m(m), m_mev(NULL) - { reset (NULL); } + m(m), m_mev(nullptr) { + reset (nullptr); + } model_evaluator_util::~model_evaluator_util() {reset (NULL);} -void model_evaluator_util::reset(model* model) -{ + void model_evaluator_util::reset(model* model) { if (m_mev) { dealloc(m_mev); m_mev = NULL; } m_model = model; - if (!m_model) { return; } + if (!m_model) { return; } m_mev = alloc(model_evaluator, *m_model); } - -bool model_evaluator_util::eval(expr *e, expr_ref &result, bool model_completion) -{ + + bool model_evaluator_util::eval(expr *e, expr_ref &result, bool model_completion) { m_mev->set_model_completion (model_completion); try { m_mev->operator() (e, result); return true; - } catch (model_evaluator_exception &ex) { + } + catch (model_evaluator_exception &ex) { (void)ex; TRACE("spacer_model_evaluator", tout << ex.msg () << "\n";); return false; } } - + bool model_evaluator_util::eval(const expr_ref_vector &v, - expr_ref& res, bool model_completion) -{ + expr_ref& res, bool model_completion) { expr_ref e(m); e = mk_and (v); return eval(e, res, model_completion); } - - -bool model_evaluator_util::is_true(const expr_ref_vector &v) -{ + + + bool model_evaluator_util::is_true(const expr_ref_vector &v) { expr_ref res(m); return eval (v, res, false) && m.is_true (res); } - -bool model_evaluator_util::is_false(expr *x) -{ + + bool model_evaluator_util::is_false(expr *x) { expr_ref res(m); return eval(x, res, false) && m.is_false (res); } -bool model_evaluator_util::is_true(expr *x) -{ + + bool model_evaluator_util::is_true(expr *x) { expr_ref res(m); return eval(x, res, false) && m.is_true (res); } - - -void reduce_disequalities(model& model, unsigned threshold, expr_ref& fml) -{ + + void reduce_disequalities(model& model, unsigned threshold, expr_ref& fml) { ast_manager& m = fml.get_manager(); expr_ref_vector conjs(m); flatten_and(fml, conjs); obj_map diseqs; expr* n, *lhs, *rhs; for (unsigned i = 0; i < conjs.size(); ++i) { - if (m.is_not(conjs[i].get(), n) && - m.is_eq(n, lhs, rhs)) { + if (m.is_not(conjs[i].get(), n) && m.is_eq(n, lhs, rhs)) { if (!m.is_value(rhs)) { std::swap(lhs, rhs); } @@ -155,14 +149,12 @@ void reduce_disequalities(model& model, unsigned threshold, expr_ref& fml) expr_ref val(m), tmp(m); proof_ref pr(m); pr = m.mk_asserted(m.mk_true()); - obj_map::iterator it = diseqs.begin(); - obj_map::iterator end = diseqs.end(); - for (; it != end; ++it) { - if (it->m_value >= threshold) { - model.eval(it->m_key, val); - sub.insert(it->m_key, val, pr); - conjs.push_back(m.mk_eq(it->m_key, val)); - num_deleted += it->m_value; + for (auto const& kv : diseqs) { + if (kv.m_value >= threshold) { + model.eval(kv.m_key, val); + sub.insert(kv.m_key, val, pr); + conjs.push_back(m.mk_eq(kv.m_key, val)); + num_deleted += kv.m_value; } } if (orig_size < conjs.size()) { @@ -178,14 +170,17 @@ void reduce_disequalities(model& model, unsigned threshold, expr_ref& fml) SASSERT(orig_size <= 1 + conjs.size()); if (i + 1 == orig_size) { // no-op. - } else if (orig_size <= conjs.size()) { + } + else if (orig_size <= conjs.size()) { // no-op - } else { + } + else { SASSERT(orig_size == 1 + conjs.size()); --orig_size; --i; } - } else { + } + else { conjs[i] = tmp; } } @@ -202,9 +197,8 @@ void reduce_disequalities(model& model, unsigned threshold, expr_ref& fml) ast_manager& m; public: ite_hoister(ast_manager& m): m(m) {} - - br_status mk_app_core(func_decl* f, unsigned num_args, expr* const* args, expr_ref& result) - { + + br_status mk_app_core(func_decl* f, unsigned num_args, expr* const* args, expr_ref& result) { if (m.is_ite(f)) { return BR_FAILED; } @@ -233,13 +227,12 @@ void reduce_disequalities(model& model, unsigned threshold, expr_ref& fml) struct ite_hoister_cfg: public default_rewriter_cfg { ite_hoister m_r; bool rewrite_patterns() const { return false; } - br_status reduce_app(func_decl * f, unsigned num, expr * const * args, expr_ref & result, proof_ref & result_pr) - { + br_status reduce_app(func_decl * f, unsigned num, expr * const * args, expr_ref & result, proof_ref & result_pr) { return m_r.mk_app_core(f, num, args, result); } ite_hoister_cfg(ast_manager & m, params_ref const & p):m_r(m) {} }; - + class ite_hoister_star : public rewriter_tpl { ite_hoister_cfg m_cfg; public: @@ -247,9 +240,8 @@ void reduce_disequalities(model& model, unsigned threshold, expr_ref& fml) rewriter_tpl(m, false, m_cfg), m_cfg(m, p) {} }; - -void hoist_non_bool_if(expr_ref& fml) -{ + + void hoist_non_bool_if(expr_ref& fml) { ast_manager& m = fml.get_manager(); scoped_no_proof _sp(m); params_ref p; @@ -266,8 +258,7 @@ void hoist_non_bool_if(expr_ref& fml) bool m_is_dl; bool m_test_for_utvpi; - bool is_numeric(expr* e) const - { + bool is_numeric(expr* e) const { if (a.is_numeral(e)) { return true; } @@ -278,13 +269,11 @@ void hoist_non_bool_if(expr_ref& fml) return false; } - bool is_arith_expr(expr *e) const - { + bool is_arith_expr(expr *e) const { return is_app(e) && a.get_family_id() == to_app(e)->get_family_id(); } - - bool is_offset(expr* e) const - { + + bool is_offset(expr* e) const { if (a.is_numeral(e)) { return true; } @@ -315,47 +304,44 @@ void hoist_non_bool_if(expr_ref& fml) return !is_arith_expr(e); } - bool is_minus_one(expr const * e) const - { - rational r; - return a.is_numeral(e, r) && r.is_minus_one(); + bool is_minus_one(expr const * e) const { + rational r; + return a.is_numeral(e, r) && r.is_minus_one(); } - bool test_ineq(expr* e) const - { + bool test_ineq(expr* e) const { SASSERT(a.is_le(e) || a.is_ge(e) || m.is_eq(e)); SASSERT(to_app(e)->get_num_args() == 2); expr * lhs = to_app(e)->get_arg(0); expr * rhs = to_app(e)->get_arg(1); if (is_offset(lhs) && is_offset(rhs)) - { return true; } + { return true; } if (!is_numeric(rhs)) - { std::swap(lhs, rhs); } + { std::swap(lhs, rhs); } if (!is_numeric(rhs)) - { return false; } + { return false; } // lhs can be 'x' or '(+ x (* -1 y))' if (is_offset(lhs)) - { return true; } + { return true; } expr* arg1, *arg2; if (!a.is_add(lhs, arg1, arg2)) - { return false; } + { return false; } // x if (m_test_for_utvpi) { return is_offset(arg1) && is_offset(arg2); } if (is_arith_expr(arg1)) - { std::swap(arg1, arg2); } + { std::swap(arg1, arg2); } if (is_arith_expr(arg1)) - { return false; } + { return false; } // arg2: (* -1 y) expr* m1, *m2; if (!a.is_mul(arg2, m1, m2)) - { return false; } + { return false; } return is_minus_one(m1) && is_offset(m2); } - bool test_eq(expr* e) const - { + bool test_eq(expr* e) const { expr* lhs, *rhs; VERIFY(m.is_eq(e, lhs, rhs)); if (!a.is_int_real(lhs)) { @@ -370,9 +356,8 @@ void hoist_non_bool_if(expr_ref& fml) !a.is_mul(lhs) && !a.is_mul(rhs); } - - bool test_term(expr* e) const - { + + bool test_term(expr* e) const { if (m.is_bool(e)) { return true; } @@ -490,7 +475,7 @@ bool is_utvpi_logic(ast_manager& m, unsigned num_fmls, expr* const* fmls) * eliminate simple equalities using qe_lite * then, MBP for Booleans (substitute), reals (based on LW), ints (based on Cooper), and arrays */ - void qe_project (ast_manager& m, app_ref_vector& vars, expr_ref& fml, +void qe_project (ast_manager& m, app_ref_vector& vars, expr_ref& fml, const model_ref& M, bool reduce_all_selects, bool use_native_mbp, bool dont_sub) { diff --git a/src/muz/spacer/spacer_util.h b/src/muz/spacer/spacer_util.h index 546b7df5b..7fb17329e 100644 --- a/src/muz/spacer/spacer_util.h +++ b/src/muz/spacer/spacer_util.h @@ -74,15 +74,6 @@ inline std::ostream& operator<<(std::ostream& out, pp_level const& p) } -struct scoped_watch { - stopwatch &m_sw; - scoped_watch (stopwatch &sw, bool reset=false): m_sw(sw) - { - if(reset) { m_sw.reset(); } - m_sw.start (); - } - ~scoped_watch () {m_sw.stop ();} -}; typedef ptr_vector app_vector; diff --git a/src/muz/spacer/spacer_virtual_solver.cpp b/src/muz/spacer/spacer_virtual_solver.cpp index ebaef14f0..938e8cb94 100644 --- a/src/muz/spacer/spacer_virtual_solver.cpp +++ b/src/muz/spacer/spacer_virtual_solver.cpp @@ -23,7 +23,8 @@ Notes: #include "muz/spacer/spacer_util.h" #include "ast/rewriter/bool_rewriter.h" -#include "ast/proof_checker/proof_checker.h" +#include "ast/proofs/proof_checker.h" +#include "ast/proofs/proof_utils.h" #include "ast/scoped_proof.h" @@ -64,172 +65,11 @@ virtual_solver::~virtual_solver() } namespace { -static bool matches_fact(expr_ref_vector &args, expr* &match) -{ - ast_manager &m = args.get_manager(); - expr *fact = args.back(); - for (unsigned i = 0, sz = args.size() - 1; i < sz; ++i) { - expr *arg = args.get(i); - if (m.is_proof(arg) && - m.has_fact(to_app(arg)) && - m.get_fact(to_app(arg)) == fact) { - match = arg; - return true; - } - } - return false; -} -class elim_aux_assertions { - app_ref m_aux; -public: - elim_aux_assertions(app_ref aux) : m_aux(aux) {} +// TBD: move to ast/proofs/elim_aux_assertions - void mk_or_core(expr_ref_vector &args, expr_ref &res) - { - ast_manager &m = args.get_manager(); - unsigned j = 0; - for (unsigned i = 0, sz = args.size(); i < sz; ++i) { - if (m.is_false(args.get(i))) { continue; } - if (i != j) { args [j] = args.get(i); } - ++j; - } - SASSERT(j >= 1); - res = j > 1 ? m.mk_or(j, args.c_ptr()) : args.get(0); - } - void mk_app(func_decl *decl, expr_ref_vector &args, expr_ref &res) - { - ast_manager &m = args.get_manager(); - bool_rewriter brwr(m); - - if (m.is_or(decl)) - { mk_or_core(args, res); } - else if (m.is_iff(decl) && args.size() == 2) - // avoiding simplifying equalities. In particular, - // we don't want (= (not a) (not b)) to be reduced to (= a b) - { res = m.mk_iff(args.get(0), args.get(1)); } - else - { brwr.mk_app(decl, args.size(), args.c_ptr(), res); } - } - - void operator()(ast_manager &m, proof *pr, proof_ref &res) - { - DEBUG_CODE(proof_checker pc(m); - expr_ref_vector side(m); - SASSERT(pc.check(pr, side)); - ); - obj_map cache; - bool_rewriter brwr(m); - - // for reference counting of new proofs - app_ref_vector pinned(m); - - ptr_vector todo; - todo.push_back(pr); - - expr_ref not_aux(m); - not_aux = m.mk_not(m_aux); - - expr_ref_vector args(m); - - while (!todo.empty()) { - app *p, *r; - expr *a; - - p = todo.back(); - if (cache.find(pr, r)) { - todo.pop_back(); - continue; - } - - SASSERT(!todo.empty() || pr == p); - bool dirty = false; - unsigned todo_sz = todo.size(); - args.reset(); - for (unsigned i = 0, sz = p->get_num_args(); i < sz; ++i) { - expr* arg = p->get_arg(i); - if (arg == m_aux.get()) { - dirty = true; - args.push_back(m.mk_true()); - } else if (arg == not_aux.get()) { - dirty = true; - args.push_back(m.mk_false()); - } - // skip (asserted m_aux) - else if (m.is_asserted(arg, a) && a == m_aux.get()) { - dirty = true; - } - // skip (hypothesis m_aux) - else if (m.is_hypothesis(arg, a) && a == m_aux.get()) { - dirty = true; - } else if (is_app(arg) && cache.find(to_app(arg), r)) { - dirty |= (arg != r); - args.push_back(r); - } else if (is_app(arg)) - { todo.push_back(to_app(arg)); } - else - // -- not an app - { args.push_back(arg); } - - } - if (todo_sz < todo.size()) { - // -- process parents - args.reset(); - continue; - } - - // ready to re-create - app_ref newp(m); - if (!dirty) { newp = p; } - else if (m.is_unit_resolution(p)) { - if (args.size() == 2) - // unit resolution with m_aux that got collapsed to nothing - { newp = to_app(args.get(0)); } - else { - ptr_vector parents; - for (unsigned i = 0, sz = args.size() - 1; i < sz; ++i) - { parents.push_back(to_app(args.get(i))); } - SASSERT(parents.size() == args.size() - 1); - newp = m.mk_unit_resolution(parents.size(), parents.c_ptr()); - // XXX the old and new facts should be - // equivalent. The test here is much - // stronger. It might need to be relaxed. - SASSERT(m.get_fact(newp) == args.back()); - pinned.push_back(newp); - } - } else if (matches_fact(args, a)) { - newp = to_app(a); - } else { - expr_ref papp(m); - mk_app(p->get_decl(), args, papp); - newp = to_app(papp.get()); - pinned.push_back(newp); - } - cache.insert(p, newp); - todo.pop_back(); - CTRACE("virtual", - p->get_decl_kind() == PR_TH_LEMMA && - p->get_decl()->get_parameter(0).get_symbol() == "arith" && - p->get_decl()->get_num_parameters() > 1 && - p->get_decl()->get_parameter(1).get_symbol() == "farkas", - tout << "Old pf: " << mk_pp(p, m) << "\n" - << "New pf: " << mk_pp(newp, m) << "\n";); - } - - proof *r; - VERIFY(cache.find(pr, r)); - - DEBUG_CODE( - proof_checker pc(m); - expr_ref_vector side(m); - SASSERT(pc.check(r, side)); - ); - - res = r ; - } -}; } proof *virtual_solver::get_proof() @@ -349,15 +189,16 @@ void virtual_solver::push_core() m_context.push(); } } -void virtual_solver::pop_core(unsigned n) -{ +void virtual_solver::pop_core(unsigned n) { SASSERT(!m_pushed || get_scope_level() > 0); if (m_pushed) { SASSERT(!m_in_delay_scope); m_context.pop(n); m_pushed = get_scope_level() - n > 0; - } else - { m_in_delay_scope = get_scope_level() - n > 0; } + } + else { + m_in_delay_scope = get_scope_level() - n > 0; + } } void virtual_solver::get_unsat_core(ptr_vector &r) diff --git a/src/muz/spacer/spacer_virtual_solver.h b/src/muz/spacer/spacer_virtual_solver.h index 613f85169..4e1f43bfc 100644 --- a/src/muz/spacer/spacer_virtual_solver.h +++ b/src/muz/spacer/spacer_virtual_solver.h @@ -94,8 +94,6 @@ public: virtual void reset(); virtual void set_progress_callback(progress_callback *callback) {UNREACHABLE();} - virtual void assert_lemma(expr* e) { NOT_IMPLEMENTED_YET(); } - virtual expr_ref lookahead(const expr_ref_vector &,const expr_ref_vector &) { return expr_ref(m.mk_true(), m); } virtual expr_ref cube() { return expr_ref(m.mk_true(), m); } virtual solver *translate(ast_manager &m, params_ref const &p); @@ -136,6 +134,9 @@ private: void refresh(); + + smt_params &fparams() { return m_fparams; } + public: virtual_solver_factory(ast_manager &mgr, smt_params &fparams); virtual ~virtual_solver_factory(); @@ -146,7 +147,6 @@ public: void collect_param_descrs(param_descrs &r) { /* empty */ } void set_produce_models(bool f) { m_fparams.m_model = f; } bool get_produce_models() { return m_fparams.m_model; } - smt_params &fparams() { return m_fparams; } }; } diff --git a/src/opt/maxres.cpp b/src/opt/maxres.cpp index 52972fef1..117b65c5a 100644 --- a/src/opt/maxres.cpp +++ b/src/opt/maxres.cpp @@ -315,14 +315,13 @@ public: void found_optimum() { IF_VERBOSE(1, verbose_stream() << "found optimum\n";); - rational upper(0); + m_lower.reset(); for (unsigned i = 0; i < m_soft.size(); ++i) { m_assignment[i] = is_true(m_soft[i]); if (!m_assignment[i]) { - upper += m_weights[i]; + m_lower += m_weights[i]; } } - SASSERT(upper == m_lower); m_upper = m_lower; m_found_feasible_optimum = true; } @@ -399,10 +398,11 @@ public: void get_current_correction_set(model* mdl, exprs& cs) { cs.reset(); if (!mdl) return; - for (unsigned i = 0; i < m_asms.size(); ++i) { - if (is_false(mdl, m_asms[i].get())) { - cs.push_back(m_asms[i].get()); + for (expr* a : m_asms) { + if (is_false(mdl, a)) { + cs.push_back(a); } + TRACE("opt", expr_ref tmp(m); mdl->eval(a, tmp, true); tout << mk_pp(a, m) << ": " << tmp << "\n";); } TRACE("opt", display_vec(tout << "new correction set: ", cs);); } @@ -511,6 +511,7 @@ public: trace(); if (m_c.num_objectives() == 1 && m_pivot_on_cs && m_csmodel.get() && m_correction_set_size < core.size()) { exprs cs; + TRACE("opt", tout << "cs " << m_correction_set_size << " " << core.size() << "\n";); get_current_correction_set(m_csmodel.get(), cs); m_correction_set_size = cs.size(); if (m_correction_set_size < core.size()) { diff --git a/src/opt/opt_context.cpp b/src/opt/opt_context.cpp index 9c861eb49..045dcafd4 100644 --- a/src/opt/opt_context.cpp +++ b/src/opt/opt_context.cpp @@ -818,7 +818,7 @@ namespace opt { bool is_max = is_maximize(fml, term, orig_term, index); bool is_min = !is_max && is_minimize(fml, term, orig_term, index); if (is_min && get_pb_sum(term, terms, weights, offset)) { - TRACE("opt", tout << "try to convert minimization" << mk_pp(term, m) << "\n";); + TRACE("opt", tout << "try to convert minimization\n" << mk_pp(term, m) << "\n";); // minimize 2*x + 3*y // <=> // (assert-soft (not x) 2) diff --git a/src/opt/opt_solver.cpp b/src/opt/opt_solver.cpp index 78ae2bbbb..3eb435fd7 100644 --- a/src/opt/opt_solver.cpp +++ b/src/opt/opt_solver.cpp @@ -47,8 +47,9 @@ namespace opt { m_dump_benchmarks(false), m_first(true), m_was_unknown(false) { + solver::updt_params(p); m_params.updt_params(p); - if (m_params.m_case_split_strategy == CS_ACTIVITY_DELAY_NEW) { + if (m_params.m_case_split_strategy == CS_ACTIVITY_DELAY_NEW) { m_params.m_relevancy_lvl = 0; } // m_params.m_auto_config = false; diff --git a/src/parsers/smt/smtlib_solver.cpp b/src/parsers/smt/smtlib_solver.cpp index b4487cbc5..339be2ddd 100644 --- a/src/parsers/smt/smtlib_solver.cpp +++ b/src/parsers/smt/smtlib_solver.cpp @@ -34,7 +34,7 @@ Revision History: namespace smtlib { solver::solver(): - m_ast_manager(m_params.m_proof ? PGM_FINE : PGM_DISABLED, + m_ast_manager(m_params.m_proof ? PGM_ENABLED : PGM_DISABLED, m_params.m_trace ? m_params.m_trace_file_name.c_str() : 0), m_ctx(0), m_error_code(0) { diff --git a/src/parsers/smt2/CMakeLists.txt b/src/parsers/smt2/CMakeLists.txt index 1467d95c6..022cce2f2 100644 --- a/src/parsers/smt2/CMakeLists.txt +++ b/src/parsers/smt2/CMakeLists.txt @@ -1,5 +1,6 @@ z3_add_component(smt2parser SOURCES + marshal.cpp smt2parser.cpp smt2scanner.cpp COMPONENT_DEPENDENCIES diff --git a/src/muz/spacer/spacer_marshal.cpp b/src/parsers/smt2/marshal.cpp similarity index 71% rename from src/muz/spacer/spacer_marshal.cpp rename to src/parsers/smt2/marshal.cpp index 68c90bd33..ae144e491 100644 --- a/src/muz/spacer/spacer_marshal.cpp +++ b/src/parsers/smt2/marshal.cpp @@ -2,14 +2,14 @@ Copyright (c) 2017 Arie Gurfinkel Module Name: - spacer_marshal.cpp + marshal.cpp Abstract: marshaling and unmarshaling of expressions --*/ -#include "muz/spacer/spacer_marshal.h" +#include "parsers/smt2/marshal.h" #include @@ -18,39 +18,33 @@ Abstract: #include "util/vector.h" #include "ast/ast_smt_pp.h" #include "ast/ast_pp.h" +#include "ast/ast_util.h" -namespace spacer { -std::ostream &marshal(std::ostream &os, expr_ref e, ast_manager &m) -{ +std::ostream &marshal(std::ostream &os, expr_ref e, ast_manager &m) { ast_smt_pp pp(m); pp.display_smt2(os, e); return os; } -std::string marshal(expr_ref e, ast_manager &m) -{ +std::string marshal(expr_ref e, ast_manager &m) { std::stringstream ss; marshal(ss, e, m); return ss.str(); } -expr_ref unmarshal(std::istream &is, ast_manager &m) -{ +expr_ref unmarshal(std::istream &is, ast_manager &m) { cmd_context ctx(false, &m); ctx.set_ignore_check(true); if (!parse_smt2_commands(ctx, is)) { return expr_ref(0, m); } ptr_vector::const_iterator it = ctx.begin_assertions(); ptr_vector::const_iterator end = ctx.end_assertions(); - if (it == end) { return expr_ref(m.mk_true(), m); } unsigned size = static_cast(end - it); - return expr_ref(m.mk_and(size, it), m); + return expr_ref(mk_and(m, size, it), m); } -expr_ref unmarshal(std::string s, ast_manager &m) -{ +expr_ref unmarshal(std::string s, ast_manager &m) { std::istringstream is(s); return unmarshal(is, m); } -} diff --git a/src/muz/spacer/spacer_marshal.h b/src/parsers/smt2/marshal.h similarity index 91% rename from src/muz/spacer/spacer_marshal.h rename to src/parsers/smt2/marshal.h index 95cb8f26a..ebc2c0426 100644 --- a/src/muz/spacer/spacer_marshal.h +++ b/src/parsers/smt2/marshal.h @@ -2,7 +2,7 @@ Copyright (c) 2017 Arie Gurfinkel Module Name: - spacer_marshal.h + marshal.h Abstract: @@ -17,14 +17,11 @@ Abstract: #include "ast/ast.h" -namespace spacer { std::ostream &marshal(std::ostream &os, expr_ref e, ast_manager &m); std::string marshal(expr_ref e, ast_manager &m); expr_ref unmarshal(std::string s, ast_manager &m); expr_ref unmarshal(std::istream &is, ast_manager &m); -} - #endif diff --git a/src/parsers/smt2/smt2parser.cpp b/src/parsers/smt2/smt2parser.cpp index d73580323..4facbc41c 100644 --- a/src/parsers/smt2/smt2parser.cpp +++ b/src/parsers/smt2/smt2parser.cpp @@ -446,7 +446,10 @@ namespace smt2 { m_ctx.regular_stream()<< "line " << line << " column " << pos << ": " << escaped(msg, true) << "\")" << std::endl; } if (m_ctx.exit_on_error()) { - exit(1); + // WORKAROUND: ASan's LeakSanitizer reports many false positives when + // calling `exit()` so call `_Exit()` instead which avoids invoking leak + // checking. + _Exit(1); } } @@ -1880,6 +1883,8 @@ namespace smt2 { // the resultant expression is on the top of the stack TRACE("let_frame", tout << "let result expr: " << mk_pp(expr_stack().back(), m()) << "\n";); expr_ref r(m()); + if (expr_stack().empty()) + throw parser_exception("invalid let expression"); r = expr_stack().back(); expr_stack().pop_back(); // remove local declarations from the stack diff --git a/src/qe/qe.cpp b/src/qe/qe.cpp index dd54f4441..061f403e3 100644 --- a/src/qe/qe.cpp +++ b/src/qe/qe.cpp @@ -1272,7 +1272,7 @@ namespace qe { family_id fid = p->get_family_id(); SASSERT(fid != null_family_id); if (static_cast(m_plugins.size()) <= fid) { - m_plugins.resize(fid+1,0); + m_plugins.resize(fid+1); } SASSERT(!m_plugins[fid]); m_plugins[fid] = p; diff --git a/src/qe/qe_arith.cpp b/src/qe/qe_arith.cpp index 9b3033397..6b3b3a11f 100644 --- a/src/qe/qe_arith.cpp +++ b/src/qe/qe_arith.cpp @@ -105,10 +105,10 @@ namespace qe { rational r; app* alit = to_app(lit); vector > nums; - for (unsigned i = 0; i < alit->get_num_args(); ++i) { - val = eval(alit->get_arg(i)); + for (expr* arg : *alit) { + val = eval(arg); if (!a.is_numeral(val, r)) return false; - nums.push_back(std::make_pair(alit->get_arg(i), r)); + nums.push_back(std::make_pair(arg, r)); } std::sort(nums.begin(), nums.end(), compare_second()); for (unsigned i = 0; i + 1 < nums.size(); ++i) { @@ -168,8 +168,8 @@ namespace qe { } else if (a.is_add(t)) { app* ap = to_app(t); - for (unsigned i = 0; i < ap->get_num_args(); ++i) { - linearize(mbo, eval, mul, ap->get_arg(i), c, fmls, ts, tids); + for (expr* arg : *ap) { + linearize(mbo, eval, mul, arg, c, fmls, ts, tids); } } else if (a.is_sub(t, t1, t2)) { @@ -226,16 +226,16 @@ namespace qe { else if (a.is_mul(t)) { app* ap = to_app(t); r = rational(1); - for (unsigned i = 0; i < ap->get_num_args(); ++i) { - if (!is_numeral(ap->get_arg(i), r1)) return false; + for (expr * arg : *ap) { + if (!is_numeral(arg, r1)) return false; r *= r1; } } else if (a.is_add(t)) { app* ap = to_app(t); r = rational(0); - for (unsigned i = 0; i < ap->get_num_args(); ++i) { - if (!is_numeral(ap->get_arg(i), r1)) return false; + for (expr * arg : *ap) { + if (!is_numeral(arg, r1)) return false; r += r1; } } @@ -297,6 +297,7 @@ namespace qe { opt::model_based_opt mbo; obj_map tids; + expr_ref_vector pinned(m); unsigned j = 0; for (unsigned i = 0; i < fmls.size(); ++i) { expr* fml = fmls[i].get(); @@ -308,6 +309,7 @@ namespace qe { } else { TRACE("qe", tout << mk_pp(fml, m) << "\n";); + pinned.push_back(fml); } } fmls.resize(j); @@ -321,8 +323,7 @@ namespace qe { // return those to fmls. expr_mark var_mark, fmls_mark; - for (unsigned i = 0; i < vars.size(); ++i) { - app* v = vars[i].get(); + for (app * v : vars) { var_mark.mark(v); if (is_arith(v) && !tids.contains(v)) { rational r; @@ -332,17 +333,16 @@ namespace qe { tids.insert(v, mbo.add_var(r, a.is_int(v))); } } - for (unsigned i = 0; i < fmls.size(); ++i) { - fmls_mark.mark(fmls[i].get()); + for (expr* fml : fmls) { + fmls_mark.mark(fml); } - obj_map::iterator it = tids.begin(), end = tids.end(); ptr_vector index2expr; - for (; it != end; ++it) { - expr* e = it->m_key; + for (auto& kv : tids) { + expr* e = kv.m_key; if (!var_mark.is_marked(e)) { mark_rec(fmls_mark, e); } - index2expr.setx(it->m_value, e, 0); + index2expr.setx(kv.m_value, e, 0); } j = 0; unsigned_vector real_vars; @@ -360,8 +360,7 @@ namespace qe { } vars.resize(j); TRACE("qe", tout << "remaining vars: " << vars << "\n"; - for (unsigned i = 0; i < real_vars.size(); ++i) { - unsigned v = real_vars[i]; + for (unsigned v : real_vars) { tout << "v" << v << " " << mk_pp(index2expr[v], m) << "\n"; } mbo.display(tout);); @@ -449,8 +448,8 @@ namespace qe { // extract linear constraints - for (unsigned i = 0; i < fmls.size(); ++i) { - linearize(mbo, eval, fmls[i].get(), fmls, tids); + for (expr * fml : fmls) { + linearize(mbo, eval, fml, fmls, tids); } // find optimal value @@ -459,11 +458,10 @@ namespace qe { // update model to use new values that satisfy optimality ptr_vector vars; - obj_map::iterator it = tids.begin(), end = tids.end(); - for (; it != end; ++it) { - expr* e = it->m_key; + for (auto& kv : tids) { + expr* e = kv.m_key; if (is_uninterp_const(e)) { - unsigned id = it->m_value; + unsigned id = kv.m_value; func_decl* f = to_app(e)->get_decl(); expr_ref val(a.mk_numeral(mbo.get_value(id), false), m); mdl.register_decl(f, val); @@ -509,10 +507,9 @@ namespace qe { void extract_coefficients(opt::model_based_opt& mbo, model_evaluator& eval, obj_map const& ts, obj_map& tids, vars& coeffs) { coeffs.reset(); eval.set_model_completion(true); - obj_map::iterator it = ts.begin(), end = ts.end(); - for (; it != end; ++it) { + for (auto& kv : ts) { unsigned id; - expr* v = it->m_key; + expr* v = kv.m_key; if (!tids.find(v, id)) { rational r; expr_ref val = eval(v); @@ -520,9 +517,9 @@ namespace qe { id = mbo.add_var(r, a.is_int(v)); tids.insert(v, id); } - CTRACE("qe", it->m_value.is_zero(), tout << mk_pp(v, m) << " has coefficeint 0\n";); - if (!it->m_value.is_zero()) { - coeffs.push_back(var(id, it->m_value)); + CTRACE("qe", kv.m_value.is_zero(), tout << mk_pp(v, m) << " has coefficeint 0\n";); + if (!kv.m_value.is_zero()) { + coeffs.push_back(var(id, kv.m_value)); } } } diff --git a/src/sat/sat_parallel.cpp b/src/sat/sat_parallel.cpp index 21f98cd6a..7ba1ba7c6 100644 --- a/src/sat/sat_parallel.cpp +++ b/src/sat/sat_parallel.cpp @@ -101,7 +101,7 @@ namespace sat { void parallel::init_solvers(solver& s, unsigned num_extra_solvers) { unsigned num_threads = num_extra_solvers + 1; - m_solvers.resize(num_extra_solvers, 0); + m_solvers.resize(num_extra_solvers); symbol saved_phase = s.m_params.get_sym("phase", symbol("caching")); for (unsigned i = 0; i < num_extra_solvers; ++i) { m_limits.push_back(reslimit()); diff --git a/src/sat/sat_simplifier.cpp b/src/sat/sat_simplifier.cpp index e2e035dfb..f091a3f93 100644 --- a/src/sat/sat_simplifier.cpp +++ b/src/sat/sat_simplifier.cpp @@ -1720,7 +1720,6 @@ namespace sat { collect_clauses(pos_l, m_pos_cls, false); collect_clauses(neg_l, m_neg_cls, false); - TRACE("resolution_detail", tout << "collecting number of after_clauses\n";); unsigned before_clauses = num_pos + num_neg; unsigned after_clauses = 0; @@ -1739,7 +1738,7 @@ namespace sat { } } TRACE("resolution", tout << "found var to eliminate, before: " << before_clauses << " after: " << after_clauses << "\n";); - + m_elim_counter -= num_pos * num_neg + before_lits; m_elim_counter -= num_pos * num_neg + before_lits; diff --git a/src/sat/sat_solver.cpp b/src/sat/sat_solver.cpp index 6a9d1d5bb..3471346ef 100644 --- a/src/sat/sat_solver.cpp +++ b/src/sat/sat_solver.cpp @@ -863,7 +863,7 @@ namespace sat { SASSERT(at_base_lvl()); if (m_config.m_dimacs_display) { display_dimacs(std::cout); - for (unsigned i = 0; i < num_lits; ++lits) { + for (unsigned i = 0; i < num_lits; ++i) { std::cout << dimacs_lit(lits[i]) << " 0\n"; } return l_undef; diff --git a/src/sat/sat_solver/inc_sat_solver.cpp b/src/sat/sat_solver/inc_sat_solver.cpp index 59f1a4a71..3f97025e9 100644 --- a/src/sat/sat_solver/inc_sat_solver.cpp +++ b/src/sat/sat_solver/inc_sat_solver.cpp @@ -77,7 +77,6 @@ public: inc_sat_solver(ast_manager& m, params_ref const& p, bool incremental_mode): m(m), m_solver(p, m.limit()), - m_params(p), m_fmls(m), m_asmsf(m), m_fmls_head(0), diff --git a/src/sat/tactic/goal2sat.cpp b/src/sat/tactic/goal2sat.cpp index 48de6d600..12a3cbf1d 100644 --- a/src/sat/tactic/goal2sat.cpp +++ b/src/sat/tactic/goal2sat.cpp @@ -1067,7 +1067,7 @@ struct sat2goal::imp { sat::literal l(v, false); if (m_lit2expr.get(l.index())) { mc->insert(v, m_lit2expr.get(l.index()), false); - SASSERT(m_lit2expr[(~l).index()]); + SASSERT(m_lit2expr.get((~l).index())); } } } diff --git a/src/smt/CMakeLists.txt b/src/smt/CMakeLists.txt index 3db66eb3e..fb1997fb4 100644 --- a/src/smt/CMakeLists.txt +++ b/src/smt/CMakeLists.txt @@ -76,7 +76,7 @@ z3_add_component(smt normal_forms parser_util pattern - proof_checker + proofs proto_model simplex substitution diff --git a/src/smt/asserted_formulas.cpp b/src/smt/asserted_formulas.cpp index 55b79ae66..8d2f6f2b3 100644 --- a/src/smt/asserted_formulas.cpp +++ b/src/smt/asserted_formulas.cpp @@ -38,7 +38,7 @@ asserted_formulas::asserted_formulas(ast_manager & m, smt_params & p): m_qhead(0), m_macro_manager(m), m_bv_sharing(m), - m_inconsistent(false), + m_inconsistent(false), m_has_quantifiers(false), m_reduce_asserted_formulas(*this), m_distribute_forall(*this), @@ -54,8 +54,8 @@ asserted_formulas::asserted_formulas(ast_manager & m, smt_params & p): m_lift_ite(*this), m_ng_lift_ite(*this), m_find_macros(*this), - m_propagate_values(*this), - m_nnf_cnf(*this), + m_propagate_values(*this), + m_nnf_cnf(*this), m_apply_quasi_macros(*this) { m_macro_finder = alloc(macro_finder, m, m_macro_manager); @@ -68,7 +68,7 @@ asserted_formulas::asserted_formulas(ast_manager & m, smt_params & p): void asserted_formulas::setup() { switch (m_params.m_lift_ite) { case LI_FULL: - m_params.m_ng_lift_ite = LI_NONE; + m_params.m_ng_lift_ite = LI_NONE; break; case LI_CONSERVATIVE: if (m_params.m_ng_lift_ite == LI_CONSERVATIVE) @@ -77,7 +77,7 @@ void asserted_formulas::setup() { default: break; } - + if (m_params.m_relevancy_lvl == 0) m_params.m_relevancy_lemma = false; } @@ -93,7 +93,7 @@ void asserted_formulas::push_assertion(expr * e, proof * pr, vectorget_num_args(); ++i) { expr* arg = to_app(e)->get_arg(i); - proof_ref _pr(m.mk_and_elim(pr, i), m); + proof_ref _pr(m.proofs_enabled() ? m.mk_and_elim(pr, i) : 0, m); push_assertion(arg, _pr, result); } } else if (m.is_not(e, e1) && m.is_or(e1)) { for (unsigned i = 0; i < to_app(e1)->get_num_args(); ++i) { expr* arg = to_app(e1)->get_arg(i); - proof_ref _pr(m.mk_not_or_elim(pr, i), m); + proof_ref _pr(m.proofs_enabled() ? m.mk_not_or_elim(pr, i) : 0, m); expr_ref narg(mk_not(m, arg), m); - push_assertion(narg, _pr, result); - } + push_assertion(narg, _pr, result); + } } else { result.push_back(justified_expr(m, e, pr)); @@ -130,6 +130,7 @@ void asserted_formulas::set_eliminate_and(bool flag) { p.set_bool("eq2ineq", m_params.m_arith_eq2ineq); p.set_bool("gcd_rounding", true); p.set_bool("expand_select_store", true); + p.set_bool("bv_sort_ac", true); m_rewriter.updt_params(p); flush_cache(); } @@ -139,11 +140,9 @@ void asserted_formulas::assert_expr(expr * e, proof * _in_pr) { proof_ref in_pr(_in_pr, m), pr(_in_pr, m); expr_ref r(e, m); - if (inconsistent()) + if (inconsistent()) return; - m_has_quantifiers |= ::has_quantifiers(e); - if (m_params.m_preprocess) { TRACE("assert_expr_bug", tout << r << "\n";); set_eliminate_and(false); // do not eliminate and before nnf. @@ -156,12 +155,15 @@ void asserted_formulas::assert_expr(expr * e, proof * _in_pr) { } TRACE("assert_expr_bug", tout << "after...\n" << r << "\n";); } + + m_has_quantifiers |= ::has_quantifiers(e); + push_assertion(r, pr, m_formulas); TRACE("asserted_formulas_bug", tout << "after assert_expr\n"; display(tout);); } void asserted_formulas::assert_expr(expr * e) { - assert_expr(e, m.mk_asserted(e)); + assert_expr(e, m.proofs_enabled() ? m.mk_asserted(e) : nullptr); } void asserted_formulas::get_assertions(ptr_vector & result) const { @@ -183,7 +185,7 @@ void asserted_formulas::push_scope() { commit(); TRACE("asserted_formulas_scopes", tout << "after push: " << m_scopes.size() << "\n";); } - + void asserted_formulas::pop_scope(unsigned num_scopes) { TRACE("asserted_formulas_scopes", tout << "before pop " << num_scopes << " of " << m_scopes.size() << "\n";); m_bv_sharing.pop_scope(num_scopes); @@ -212,7 +214,7 @@ void asserted_formulas::reset() { bool asserted_formulas::check_well_sorted() const { for (justified_expr const& je : m_formulas) { - if (!is_well_sorted(m, je.get_fml())) return false; + if (!is_well_sorted(m, je.get_fml())) return false; } return true; } @@ -224,20 +226,20 @@ void asserted_formulas::reduce() { return; if (m_qhead == m_formulas.size()) return; - if (!m_params.m_preprocess) - return; - if (m_macro_manager.has_macros()) + if (!m_params.m_preprocess) + return; + if (m_macro_manager.has_macros()) invoke(m_find_macros); - + TRACE("before_reduce", display(tout);); CASSERT("well_sorted", check_well_sorted()); - + set_eliminate_and(false); // do not eliminate and before nnf. if (!invoke(m_propagate_values)) return; if (!invoke(m_find_macros)) return; if (!invoke(m_nnf_cnf)) return; set_eliminate_and(true); - if (!invoke(m_reduce_asserted_formulas)) return; + if (!invoke(m_reduce_asserted_formulas)) return; if (!invoke(m_pull_cheap_ite_trees)) return; if (!invoke(m_pull_nested_quantifiers)) return; if (!invoke(m_lift_ite)) return; @@ -276,14 +278,14 @@ bool asserted_formulas::invoke(simplify_fmls& s) { if (!s.should_apply()) return true; IF_VERBOSE(10, verbose_stream() << "(smt." << s.id() << ")\n";); s(); - IF_VERBOSE(10000, verbose_stream() << "total size: " << get_total_size() << "\n";); - TRACE("reduce_step_ll", ast_mark visited; display_ll(tout, visited);); - CASSERT("well_sorted",check_well_sorted()); - if (inconsistent() || canceled()) { - TRACE("after_reduce", display(tout);); - TRACE("after_reduce_ll", ast_mark visited; display_ll(tout, visited);); + IF_VERBOSE(10000, verbose_stream() << "total size: " << get_total_size() << "\n";); + TRACE("reduce_step_ll", ast_mark visited; display_ll(tout, visited);); + CASSERT("well_sorted",check_well_sorted()); + if (inconsistent() || canceled()) { + TRACE("after_reduce", display(tout);); + TRACE("after_reduce_ll", ast_mark visited; display_ll(tout, visited);); return false; - } + } else { return true; } @@ -301,10 +303,10 @@ void asserted_formulas::display(std::ostream & out) const { void asserted_formulas::display_ll(std::ostream & out, ast_mark & pp_visited) const { if (!m_formulas.empty()) { - for (justified_expr const& f : m_formulas) + for (justified_expr const& f : m_formulas) ast_def_ll_pp(out, m, f.get_fml(), pp_visited, true, false); out << "asserted formulas:\n"; - for (justified_expr const& f : m_formulas) + for (justified_expr const& f : m_formulas) out << "#" << f.get_fml()->get_id() << " "; out << "\n"; } @@ -333,9 +335,9 @@ void asserted_formulas::find_macros_core() { void asserted_formulas::apply_quasi_macros() { TRACE("before_quasi_macros", display(tout);); vector new_fmls; - quasi_macros proc(m, m_macro_manager); - while (proc(m_formulas.size() - m_qhead, - m_formulas.c_ptr() + m_qhead, + quasi_macros proc(m, m_macro_manager); + while (proc(m_formulas.size() - m_qhead, + m_formulas.c_ptr() + m_qhead, new_fmls)) { swap_asserted_formulas(new_fmls); new_fmls.reset(); @@ -349,7 +351,7 @@ void asserted_formulas::nnf_cnf() { vector new_fmls; expr_ref_vector push_todo(m); proof_ref_vector push_todo_prs(m); - + unsigned i = m_qhead; unsigned sz = m_formulas.size(); TRACE("nnf_bug", tout << "i: " << i << " sz: " << sz << "\n";); @@ -364,7 +366,7 @@ void asserted_formulas::nnf_cnf() { CASSERT("well_sorted", is_well_sorted(m, n)); apply_nnf(n, push_todo, push_todo_prs, r1, pr1); CASSERT("well_sorted",is_well_sorted(m, r1)); - pr = m.mk_modus_ponens(pr, pr1); + pr = m.proofs_enabled() ? m.mk_modus_ponens(pr, pr1) : nullptr; push_todo.push_back(r1); push_todo_prs.push_back(pr); @@ -379,7 +381,7 @@ void asserted_formulas::nnf_cnf() { CASSERT("well_sorted",is_well_sorted(m, r1)); if (canceled()) { return; - } + } if (m.proofs_enabled()) pr = m.mk_modus_ponens(push_todo_prs.get(k), pr1); push_assertion(r1, pr, new_fmls); @@ -390,8 +392,8 @@ void asserted_formulas::nnf_cnf() { void asserted_formulas::simplify_fmls::operator()() { vector new_fmls; - unsigned sz = af.m_formulas.size(); - for (unsigned i = af.m_qhead; i < sz; i++) { + unsigned sz = af.m_formulas.size(); + for (unsigned i = af.m_qhead; i < sz; i++) { auto& j = af.m_formulas[i]; expr_ref result(m); proof_ref result_pr(m); @@ -407,8 +409,8 @@ void asserted_formulas::simplify_fmls::operator()() { af.push_assertion(result, result_pr, new_fmls); } if (af.canceled()) return; - } - af.swap_asserted_formulas(new_fmls); + } + af.swap_asserted_formulas(new_fmls); TRACE("asserted_formulas", af.display(tout);); post_op(); } @@ -474,12 +476,12 @@ void asserted_formulas::propagate_values() { unsigned asserted_formulas::propagate_values(unsigned i) { expr_ref n(m_formulas[i].get_fml(), m); - expr_ref new_n(m); - proof_ref new_pr(m); - m_rewriter(n, new_n, new_pr); - if (m.proofs_enabled()) { + expr_ref new_n(m); + proof_ref new_pr(m); + m_rewriter(n, new_n, new_pr); + if (m.proofs_enabled()) { proof * pr = m_formulas[i].get_proof(); - new_pr = m.mk_modus_ponens(pr, new_pr); + new_pr = m.mk_modus_ponens(pr, new_pr); } justified_expr j(m, new_n, new_pr); m_formulas[i] = j; @@ -505,16 +507,16 @@ void asserted_formulas::update_substitution(expr* n, proof* pr) { } if (is_gt(rhs, lhs)) { TRACE("propagate_values", tout << "insert " << mk_pp(rhs, m) << " -> " << mk_pp(lhs, m) << "\n";); - m_scoped_substitution.insert(rhs, lhs, m.mk_symmetry(pr)); + m_scoped_substitution.insert(rhs, lhs, m.proofs_enabled() ? m.mk_symmetry(pr) : nullptr); return; } TRACE("propagate_values", tout << "incompatible " << mk_pp(n, m) << "\n";); } if (m.is_not(n, n1)) { - m_scoped_substitution.insert(n1, m.mk_false(), m.mk_iff_false(pr)); + m_scoped_substitution.insert(n1, m.mk_false(), m.proofs_enabled() ? m.mk_iff_false(pr) : nullptr); } else { - m_scoped_substitution.insert(n, m.mk_true(), m.mk_iff_true(pr)); + m_scoped_substitution.insert(n, m.mk_true(), m.proofs_enabled() ? m.mk_iff_true(pr) : nullptr); } } @@ -556,13 +558,13 @@ bool asserted_formulas::is_gt(expr* lhs, expr* rhs) { } UNREACHABLE(); } - + return false; } void asserted_formulas::compute_depth(expr* e) { ptr_vector todo; - todo.push_back(e); + todo.push_back(e); while (!todo.empty()) { e = todo.back(); unsigned d = 0; @@ -605,8 +607,7 @@ proof * asserted_formulas::get_inconsistency_proof() const { return 0; } - -void asserted_formulas::refine_inj_axiom_fn::simplify(justified_expr const& j, expr_ref& n, proof_ref& p) { +void asserted_formulas::refine_inj_axiom_fn::simplify(justified_expr const& j, expr_ref& n, proof_ref& p) { expr* f = j.get_fml(); if (is_quantifier(f) && simplify_inj_axiom(m, to_quantifier(f), n)) { TRACE("inj_axiom", tout << "simplifying...\n" << mk_pp(f, m) << "\n" << n << "\n";); diff --git a/src/smt/mam.cpp b/src/smt/mam.cpp index 497aab8db..96334e3ce 100644 --- a/src/smt/mam.cpp +++ b/src/smt/mam.cpp @@ -1999,7 +1999,7 @@ namespace smt { m_ast_manager(ctx.get_manager()), m_mam(m), m_use_filters(use_filters) { - m_args.resize(INIT_ARGS_SIZE, 0); + m_args.resize(INIT_ARGS_SIZE); } ~interpreter() { diff --git a/src/smt/params/smt_params_helper.pyg b/src/smt/params/smt_params_helper.pyg index 06da12569..c6749f678 100644 --- a/src/smt/params/smt_params_helper.pyg +++ b/src/smt/params/smt_params_helper.pyg @@ -74,7 +74,7 @@ def_module_params(module_name='smt', ('str.fast_length_tester_cache', BOOL, False, 'cache length tester constants instead of regenerating them'), ('str.fast_value_tester_cache', BOOL, True, 'cache value tester constants instead of regenerating them'), ('str.string_constant_cache', BOOL, True, 'cache all generated string constants generated from anywhere in theory_str'), - ('str.use_binary_search', BOOL, False, 'use a binary search heuristic for finding concrete length values for free variables in theory_str (set to False to use linear search)'), + ('str.use_binary_search', BOOL, True, 'use a binary search heuristic for finding concrete length values for free variables in theory_str (set to False to use linear search)'), ('str.binary_search_start', UINT, 64, 'initial upper bound for theory_str binary search'), ('theory_aware_branching', BOOL, False, 'Allow the context to use extra information from theory solvers regarding literal branching prioritization.'), ('str.finite_overlap_models', BOOL, False, 'attempt a finite model search for overlapping variables instead of completely giving up on the arrangement'), diff --git a/src/smt/smt_conflict_resolution.cpp b/src/smt/smt_conflict_resolution.cpp index cb1465d94..80168df18 100644 --- a/src/smt/smt_conflict_resolution.cpp +++ b/src/smt/smt_conflict_resolution.cpp @@ -810,8 +810,6 @@ namespace smt { m_new_proofs.push_back(pr); return pr; } - if (m_manager.coarse_grain_proofs()) - return pr; TRACE("norm_eq_proof", tout << "#" << n1->get_owner_id() << " = #" << n2->get_owner_id() << "\n"; tout << mk_ll_pp(pr, m_manager, true, false);); @@ -1217,7 +1215,7 @@ namespace smt { mk_proof(rhs, c, prs2); while (!prs2.empty()) { proof * pr = prs2.back(); - if (m_manager.fine_grain_proofs()) { + if (m_manager.proofs_enabled()) { pr = m_manager.mk_symmetry(pr); m_new_proofs.push_back(pr); prs1.push_back(pr); diff --git a/src/smt/smt_context.cpp b/src/smt/smt_context.cpp index 8e95e13ac..4535b29c2 100644 --- a/src/smt/smt_context.cpp +++ b/src/smt/smt_context.cpp @@ -23,7 +23,7 @@ Revision History: #include "ast/ast_ll_pp.h" #include "util/warning.h" #include "smt/smt_quick_checker.h" -#include "ast/proof_checker/proof_checker.h" +#include "ast/proofs/proof_checker.h" #include "ast/ast_util.h" #include "smt/uses_theory.h" #include "model/model.h" @@ -1286,7 +1286,7 @@ namespace smt { else { if (depth >= m_almost_cg_tables.size()) { unsigned old_sz = m_almost_cg_tables.size(); - m_almost_cg_tables.resize(depth+1, 0); + m_almost_cg_tables.resize(depth+1); for (unsigned i = old_sz; i < depth + 1; i++) m_almost_cg_tables[i] = alloc(almost_cg_table); } @@ -4402,7 +4402,8 @@ namespace smt { subst.push_back(arg); } expr_ref bodyr(m); - var_subst sub(m, false); + var_subst sub(m, true); + TRACE("context", tout << expr_ref(q, m) << " " << subst << "\n";); sub(body, subst.size(), subst.c_ptr(), bodyr); func_decl* f = to_app(fn)->get_decl(); func_interp* fi = alloc(func_interp, m, f->get_arity()); diff --git a/src/smt/smt_justification.cpp b/src/smt/smt_justification.cpp index c8de45644..440da7297 100644 --- a/src/smt/smt_justification.cpp +++ b/src/smt/smt_justification.cpp @@ -129,7 +129,7 @@ namespace smt { if (m_node1 != m_node1->get_root()) { proof * pr = cr.get_proof(m_node1, m_node1->get_root()); - if (pr && m.fine_grain_proofs()) + if (pr && m.proofs_enabled()) pr = m.mk_symmetry(pr); prs.push_back(pr); if (!pr) diff --git a/src/smt/smt_solver.cpp b/src/smt/smt_solver.cpp index b7a686a71..b37d004f4 100644 --- a/src/smt/smt_solver.cpp +++ b/src/smt/smt_solver.cpp @@ -29,9 +29,8 @@ Notes: namespace smt { - class solver : public solver_na2as { + class smt_solver : public solver_na2as { smt_params m_smt_params; - params_ref m_params; smt::kernel m_context; progress_callback * m_callback; symbol m_logic; @@ -42,28 +41,24 @@ namespace smt { obj_map m_name2assertion; public: - solver(ast_manager & m, params_ref const & p, symbol const & l) : + smt_solver(ast_manager & m, params_ref const & p, symbol const & l) : solver_na2as(m), m_smt_params(p), - m_params(p), m_context(m, m_smt_params), m_minimizing_core(false), m_core_extend_patterns(false), m_core_extend_patterns_max_distance(UINT_MAX), - m_core_extend_nonlocal_patterns(false) { + m_core_extend_nonlocal_patterns(false) { m_logic = l; if (m_logic != symbol::null) m_context.set_logic(m_logic); - smt_params_helper smth(p); - m_core_extend_patterns = smth.core_extend_patterns(); - m_core_extend_patterns_max_distance = smth.core_extend_patterns_max_distance(); - m_core_extend_nonlocal_patterns = smth.core_extend_nonlocal_patterns(); + updt_params(p); } virtual solver * translate(ast_manager & m, params_ref const & p) { ast_translation translator(get_manager(), m); - solver * result = alloc(solver, m, p, m_logic); + smt_solver * result = alloc(smt_solver, m, p, m_logic); smt::kernel::copy(m_context, result->m_context); for (auto & kv : m_name2assertion) @@ -75,13 +70,13 @@ namespace smt { return result; } - virtual ~solver() { + virtual ~smt_solver() { dec_ref_values(get_manager(), m_name2assertion); } virtual void updt_params(params_ref const & p) { + solver::updt_params(p); m_smt_params.updt_params(p); - m_params.copy(p); m_context.updt_params(p); smt_params_helper smth(p); m_core_extend_patterns = smth.core_extend_patterns(); @@ -152,9 +147,9 @@ namespace smt { } struct scoped_minimize_core { - solver& s; + smt_solver& s; expr_ref_vector m_assumptions; - scoped_minimize_core(solver& s) : s(s), m_assumptions(s.m_assumptions) { + scoped_minimize_core(smt_solver& s) : s(s), m_assumptions(s.m_assumptions) { s.m_minimizing_core = true; s.m_assumptions.reset(); } @@ -171,7 +166,7 @@ namespace smt { r.push_back(m_context.get_unsat_core_expr(i)); } - if (m_minimizing_core && smt_params_helper(m_params).core_minimize()) { + if (m_minimizing_core && smt_params_helper(get_params()).core_minimize()) { scoped_minimize_core scm(*this); mus mus(*this); mus.add_soft(r.size(), r.c_ptr()); @@ -362,22 +357,16 @@ namespace smt { void add_nonlocal_pattern_literals_to_core(ptr_vector & core) { ast_manager & m = get_manager(); - - obj_map::iterator it = m_name2assertion.begin(); - obj_map::iterator end = m_name2assertion.end(); - for (unsigned i = 0; it != end; it++, i++) { - expr_ref name(it->m_key, m); - expr_ref assrtn(it->m_value, m); + for (auto const& kv : m_name2assertion) { + expr_ref name(kv.m_key, m); + expr_ref assrtn(kv.m_value, m); if (!core.contains(name)) { func_decl_set pattern_fds, body_fds; collect_pattern_fds(assrtn, pattern_fds); collect_body_func_decls(assrtn, body_fds); - func_decl_set::iterator pit = pattern_fds.begin(); - func_decl_set::iterator pend= pattern_fds.end(); - for (; pit != pend; pit++) { - func_decl * fd = *pit; + for (func_decl *fd : pattern_fds) { if (!body_fds.contains(fd)) { core.insert(name); break; @@ -390,7 +379,7 @@ namespace smt { }; solver * mk_smt_solver(ast_manager & m, params_ref const & p, symbol const & logic) { - return alloc(smt::solver, m, p, logic); + return alloc(smt::smt_solver, m, p, logic); } class smt_solver_factory : public solver_factory { diff --git a/src/smt/theory_array.cpp b/src/smt/theory_array.cpp index 18fc9f50b..b8f76f9ad 100644 --- a/src/smt/theory_array.cpp +++ b/src/smt/theory_array.cpp @@ -53,18 +53,12 @@ namespace smt { var_data * d2 = m_var_data[v2]; if (!d1->m_prop_upward && d2->m_prop_upward) set_prop_upward(v1); - ptr_vector::iterator it = d2->m_stores.begin(); - ptr_vector::iterator end = d2->m_stores.end(); - for (; it != end; ++it) - add_store(v1, *it); - it = d2->m_parent_stores.begin(); - end = d2->m_parent_stores.end(); - for (; it != end; ++it) - add_parent_store(v1, *it); - it = d2->m_parent_selects.begin(); - end = d2->m_parent_selects.end(); - for (; it != end; ++it) - add_parent_select(v1, *it); + for (enode* n : d2->m_stores) + add_store(v1, n); + for (enode* n : d2->m_parent_stores) + add_parent_store(v1, n); + for (enode* n : d2->m_parent_selects) + add_parent_select(v1, n); TRACE("array", tout << "after merge\n"; display_var(tout, v1);); } @@ -103,16 +97,11 @@ namespace smt { d->m_parent_selects.push_back(s); TRACE("array", tout << mk_pp(s->get_owner(), get_manager()) << " " << mk_pp(get_enode(v)->get_owner(), get_manager()) << "\n";); m_trail_stack.push(push_back_trail(d->m_parent_selects)); - ptr_vector::iterator it = d->m_stores.begin(); - ptr_vector::iterator end = d->m_stores.end(); - for (; it != end; ++it) { - instantiate_axiom2a(s, *it); + for (enode* n : d->m_stores) { + instantiate_axiom2a(s, n); } if (!m_params.m_array_weak && !m_params.m_array_delay_exp_axiom && d->m_prop_upward) { - it = d->m_parent_stores.begin(); - end = d->m_parent_stores.end(); - for (; it != end; ++it) { - enode * store = *it; + for (enode* store : d->m_parent_stores) { SASSERT(is_store(store)); if (!m_params.m_array_cg || store->is_cgr()) { instantiate_axiom2b(s, store); @@ -129,27 +118,19 @@ namespace smt { var_data * d = m_var_data[v]; d->m_parent_stores.push_back(s); m_trail_stack.push(push_back_trail(d->m_parent_stores)); - if (!m_params.m_array_weak && !m_params.m_array_delay_exp_axiom && d->m_prop_upward) { - ptr_vector::iterator it = d->m_parent_selects.begin(); - ptr_vector::iterator end = d->m_parent_selects.end(); - for (; it != end; ++it) - if (!m_params.m_array_cg || (*it)->is_cgr()) - instantiate_axiom2b(*it, s); - } + if (!m_params.m_array_weak && !m_params.m_array_delay_exp_axiom && d->m_prop_upward) + for (enode* n : d->m_parent_selects) + if (!m_params.m_array_cg || n->is_cgr()) + instantiate_axiom2b(n, s); } bool theory_array::instantiate_axiom2b_for(theory_var v) { bool result = false; var_data * d = m_var_data[v]; - ptr_vector::iterator it = d->m_parent_stores.begin(); - ptr_vector::iterator end = d->m_parent_stores.end(); - for (; it != end; ++it) { - ptr_vector::iterator it2 = d->m_parent_selects.begin(); - ptr_vector::iterator end2 = d->m_parent_selects.end(); - for (; it2 != end2; ++it2) - if (instantiate_axiom2b(*it2, *it)) + for (enode* n1 : d->m_parent_stores) + for (enode * n2 : d->m_parent_selects) + if (instantiate_axiom2b(n2, n1)) result = true; - } return result; } @@ -167,10 +148,8 @@ namespace smt { d->m_prop_upward = true; if (!m_params.m_array_delay_exp_axiom) instantiate_axiom2b_for(v); - ptr_vector::iterator it = d->m_stores.begin(); - ptr_vector::iterator end = d->m_stores.end(); - for (; it != end; ++it) - set_prop_upward(*it); + for (enode * n : d->m_stores) + set_prop_upward(n); } } @@ -209,11 +188,9 @@ namespace smt { } d->m_stores.push_back(s); m_trail_stack.push(push_back_trail(d->m_stores)); - ptr_vector::iterator it = d->m_parent_selects.begin(); - ptr_vector::iterator end = d->m_parent_selects.end(); - for (; it != end; ++it) { - SASSERT(is_select(*it)); - instantiate_axiom2a(*it, s); + for (enode * n : d->m_parent_selects) { + SASSERT(is_select(n)); + instantiate_axiom2a(n, s); } if (m_params.m_array_always_prop_upward || lambda_equiv_class_size >= 1) set_prop_upward(s); @@ -374,7 +351,7 @@ namespace smt { final_check_status theory_array::final_check_eh() { m_final_check_idx++; - final_check_status r; + final_check_status r = FC_DONE; if (m_params.m_array_lazy_ieq) { // Delay the creation of interface equalities... The // motivation is too give other theories and quantifier diff --git a/src/smt/theory_array_base.cpp b/src/smt/theory_array_base.cpp index 1f519dfda..472053fdc 100644 --- a/src/smt/theory_array_base.cpp +++ b/src/smt/theory_array_base.cpp @@ -210,17 +210,15 @@ namespace smt { - func_decl_ref_vector * theory_array_base::register_sort(sort * s_array) { unsigned dimension = get_dimension(s_array); func_decl_ref_vector * ext_skolems = 0; if (!m_sort2skolem.find(s_array, ext_skolems)) { + array_util util(get_manager()); ast_manager & m = get_manager(); ext_skolems = alloc(func_decl_ref_vector, m); for (unsigned i = 0; i < dimension; ++i) { - sort * ext_sk_domain[2] = { s_array, s_array }; - parameter p(i); - func_decl * ext_sk_decl = m.mk_func_decl(get_id(), OP_ARRAY_EXT, 1, &p, 2, ext_sk_domain); + func_decl * ext_sk_decl = util.mk_array_ext(s_array, i); ext_skolems->push_back(ext_sk_decl); } m_sort2skolem.insert(s_array, ext_skolems); @@ -617,8 +615,8 @@ namespace smt { m_else_values.reset(); m_parents.reset(); m_parents.resize(num_vars, -1); - m_defaults.resize(num_vars, 0); - m_else_values.resize(num_vars, 0); + m_defaults.resize(num_vars); + m_else_values.resize(num_vars); if (m_use_unspecified_default) return; diff --git a/src/smt/theory_datatype.cpp b/src/smt/theory_datatype.cpp index 616314117..bbed6840d 100644 --- a/src/smt/theory_datatype.cpp +++ b/src/smt/theory_datatype.cpp @@ -620,7 +620,7 @@ namespace smt { sort * s = recognizer->get_decl()->get_domain(0); if (d->m_recognizers.empty()) { SASSERT(m_util.is_datatype(s)); - d->m_recognizers.resize(m_util.get_datatype_num_constructors(s), 0); + d->m_recognizers.resize(m_util.get_datatype_num_constructors(s)); } SASSERT(d->m_recognizers.size() == m_util.get_datatype_num_constructors(s)); unsigned c_idx = m_util.get_recognizer_constructor_idx(recognizer->get_decl()); diff --git a/src/smt/theory_dense_diff_logic_def.h b/src/smt/theory_dense_diff_logic_def.h index 064bdd433..78fb4d03d 100644 --- a/src/smt/theory_dense_diff_logic_def.h +++ b/src/smt/theory_dense_diff_logic_def.h @@ -914,6 +914,8 @@ namespace smt { } verbose_stream() << " + " << m_objective_consts[v] << "\n";); + unsynch_mpq_manager mgr; + unsynch_mpq_inf_manager inf_mgr; unsigned num_nodes = get_num_vars(); unsigned num_edges = m_edges.size(); S.ensure_var(num_nodes + num_edges + m_objectives.size()); @@ -921,8 +923,9 @@ namespace smt { numeral const& a = m_assignment[i]; rational fin = a.get_rational().to_rational(); rational inf = a.get_infinitesimal().to_rational(); - mpq_inf q(fin.to_mpq(), inf.to_mpq()); + mpq_inf q(mgr.dup(fin.to_mpq()), mgr.dup(inf.to_mpq())); S.set_value(i, q); + inf_mgr.del(q); } for (unsigned i = 0; i < num_nodes; ++i) { enode * n = get_enode(i); @@ -933,7 +936,6 @@ namespace smt { } } svector vars; - unsynch_mpq_manager mgr; scoped_mpq_vector coeffs(mgr); coeffs.push_back(mpq(1)); coeffs.push_back(mpq(-1)); @@ -954,8 +956,9 @@ namespace smt { numeral const& w = e.m_offset; rational fin = w.get_rational().to_rational(); rational inf = w.get_infinitesimal().to_rational(); - mpq_inf q(fin.to_mpq(),inf.to_mpq()); + mpq_inf q(mgr.dup(fin.to_mpq()), mgr.dup(inf.to_mpq())); S.set_upper(base_var, q); + inf_mgr.del(q); } unsigned w = num_nodes + num_edges + v; diff --git a/src/smt/theory_diff_logic_def.h b/src/smt/theory_diff_logic_def.h index a7153234c..203dd24d2 100644 --- a/src/smt/theory_diff_logic_def.h +++ b/src/smt/theory_diff_logic_def.h @@ -1107,6 +1107,8 @@ unsigned theory_diff_logic::simplex2edge(unsigned e) { template void theory_diff_logic::update_simplex(Simplex& S) { + unsynch_mpq_manager mgr; + unsynch_mpq_inf_manager inf_mgr; unsigned num_nodes = m_graph.get_num_nodes(); vector > const& es = m_graph.get_all_edges(); S.ensure_var(num_simplex_vars()); @@ -1114,13 +1116,13 @@ void theory_diff_logic::update_simplex(Simplex& S) { numeral const& a = m_graph.get_assignment(i); rational fin = a.get_rational().to_rational(); rational inf = a.get_infinitesimal().to_rational(); - mpq_inf q(fin.to_mpq(), inf.to_mpq()); + mpq_inf q(mgr.dup(fin.to_mpq()), mgr.dup(inf.to_mpq())); S.set_value(node2simplex(i), q); + inf_mgr.del(q); } S.set_lower(node2simplex(get_zero()), mpq_inf(mpq(0), mpq(0))); S.set_upper(node2simplex(get_zero()), mpq_inf(mpq(0), mpq(0))); svector vars; - unsynch_mpq_manager mgr; scoped_mpq_vector coeffs(mgr); coeffs.push_back(mpq(1)); coeffs.push_back(mpq(-1)); @@ -1145,8 +1147,9 @@ void theory_diff_logic::update_simplex(Simplex& S) { numeral const& w = e.get_weight(); rational fin = w.get_rational().to_rational(); rational inf = w.get_infinitesimal().to_rational(); - mpq_inf q(fin.to_mpq(),inf.to_mpq()); + mpq_inf q(mgr.dup(fin.to_mpq()), mgr.dup(inf.to_mpq())); S.set_upper(base_var, q); + inf_mgr.del(q); } else { S.unset_upper(base_var); diff --git a/src/smt/theory_pb.h b/src/smt/theory_pb.h index fdca9ad73..f5b53b713 100644 --- a/src/smt/theory_pb.h +++ b/src/smt/theory_pb.h @@ -363,7 +363,6 @@ namespace smt { // void compile_ineq(ineq& c); void inc_propagations(ineq& c); - unsigned get_compilation_threshold(ineq& c); // // Conflict resolution, cutting plane derivation. diff --git a/src/smt/theory_seq.cpp b/src/smt/theory_seq.cpp index 44ce804e7..d55484384 100644 --- a/src/smt/theory_seq.cpp +++ b/src/smt/theory_seq.cpp @@ -3466,6 +3466,8 @@ static bool get_arith_value(context& ctx, theory_id afid, expr* e, expr_ref& v) bool theory_seq::get_num_value(expr* e, rational& val) const { context& ctx = get_context(); expr_ref _val(m); + if (!ctx.e_internalized(e)) + return false; enode* next = ctx.get_enode(e), *n = next; do { if (get_arith_value(ctx, m_autil.get_family_id(), next->get_owner(), _val) && m_autil.is_numeral(_val, val) && val.is_int()) { diff --git a/src/smt/theory_str.cpp b/src/smt/theory_str.cpp index 8a141665c..a1f0f9777 100644 --- a/src/smt/theory_str.cpp +++ b/src/smt/theory_str.cpp @@ -166,14 +166,18 @@ namespace smt { } } - void theory_str::assert_axiom(expr * e) { + void theory_str::assert_axiom(expr * _e) { if (opt_VerifyFinalCheckProgress) { finalCheckProgressIndicator = true; } - if (get_manager().is_true(e)) return; - TRACE("str", tout << "asserting " << mk_ismt2_pp(e, get_manager()) << std::endl;); + if (get_manager().is_true(_e)) return; context & ctx = get_context(); + ast_manager& m = get_manager(); + TRACE("str", tout << "asserting " << mk_ismt2_pp(_e, m) << std::endl;); + expr_ref e(_e, m); + //th_rewriter rw(m); + //rw(e); if (!ctx.b_internalized(e)) { ctx.internalize(e, false); } @@ -190,13 +194,13 @@ namespace smt { expr * theory_str::rewrite_implication(expr * premise, expr * conclusion) { ast_manager & m = get_manager(); - return m.mk_or(m.mk_not(premise), conclusion); + return m.mk_or(mk_not(m, premise), conclusion); } void theory_str::assert_implication(expr * premise, expr * conclusion) { ast_manager & m = get_manager(); TRACE("str", tout << "asserting implication " << mk_ismt2_pp(premise, m) << " -> " << mk_ismt2_pp(conclusion, m) << std::endl;); - expr_ref axiom(m.mk_or(m.mk_not(premise), conclusion), m); + expr_ref axiom(m.mk_or(mk_not(m, premise), conclusion), m); assert_axiom(axiom); } @@ -315,6 +319,7 @@ namespace smt { m_trail.push_back(node); if (!cut_var_map.contains(baseNode)) { T_cut * varInfo = alloc(T_cut); + m_cut_allocs.push_back(varInfo); varInfo->level = slevel; varInfo->vars[node] = 1; cut_var_map.insert(baseNode, std::stack()); @@ -323,6 +328,7 @@ namespace smt { } else { if (cut_var_map[baseNode].empty()) { T_cut * varInfo = alloc(T_cut); + m_cut_allocs.push_back(varInfo); varInfo->level = slevel; varInfo->vars[node] = 1; cut_var_map[baseNode].push(varInfo); @@ -330,6 +336,7 @@ namespace smt { } else { if (cut_var_map[baseNode].top()->level < slevel) { T_cut * varInfo = alloc(T_cut); + m_cut_allocs.push_back(varInfo); varInfo->level = slevel; cut_vars_map_copy(varInfo->vars, cut_var_map[baseNode].top()->vars); varInfo->vars[node] = 1; @@ -359,6 +366,7 @@ namespace smt { if (!cut_var_map.contains(destNode)) { T_cut * varInfo = alloc(T_cut); + m_cut_allocs.push_back(varInfo); varInfo->level = slevel; cut_vars_map_copy(varInfo->vars, cut_var_map[srcNode].top()->vars); cut_var_map.insert(destNode, std::stack()); @@ -367,6 +375,7 @@ namespace smt { } else { if (cut_var_map[destNode].empty() || cut_var_map[destNode].top()->level < slevel) { T_cut * varInfo = alloc(T_cut); + m_cut_allocs.push_back(varInfo); varInfo->level = slevel; cut_vars_map_copy(varInfo->vars, cut_var_map[destNode].top()->vars); cut_vars_map_copy(varInfo->vars, cut_var_map[srcNode].top()->vars); @@ -540,7 +549,7 @@ namespace smt { context & ctx = get_context(); ast_manager & m = get_manager(); - expr_ref ax1(m.mk_not(ctx.mk_eq_atom(s, mk_string(""))), m); + expr_ref ax1(mk_not(m, ctx.mk_eq_atom(s, mk_string(""))), m); assert_axiom(ax1); { @@ -552,7 +561,7 @@ namespace smt { SASSERT(zero); // build LHS > RHS and assert // we have to build !(LHS <= RHS) instead - expr_ref lhs_gt_rhs(m.mk_not(m_autil.mk_le(len_str, zero)), m); + expr_ref lhs_gt_rhs(mk_not(m, m_autil.mk_le(len_str, zero)), m); SASSERT(lhs_gt_rhs); assert_axiom(lhs_gt_rhs); } @@ -587,7 +596,7 @@ namespace smt { SASSERT(zero); // build LHS > RHS and assert // we have to build !(LHS <= RHS) instead - expr_ref lhs_gt_rhs(m.mk_not(m_autil.mk_le(len_str, zero)), m); + expr_ref lhs_gt_rhs(mk_not(m, m_autil.mk_le(len_str, zero)), m); SASSERT(lhs_gt_rhs); assert_axiom(lhs_gt_rhs); } @@ -1084,7 +1093,7 @@ namespace smt { m_autil.mk_ge(expr->get_arg(1), mk_int(0)), // REWRITE for arithmetic theory: // m_autil.mk_lt(expr->get_arg(1), mk_strlen(expr->get_arg(0))) - m.mk_not(m_autil.mk_ge(m_autil.mk_add(expr->get_arg(1), m_autil.mk_mul(mk_int(-1), mk_strlen(expr->get_arg(0)))), mk_int(0))) + mk_not(m, m_autil.mk_ge(m_autil.mk_add(expr->get_arg(1), m_autil.mk_mul(mk_int(-1), mk_strlen(expr->get_arg(0)))), mk_int(0))) ), m); expr_ref_vector and_item(m); @@ -1125,7 +1134,7 @@ namespace smt { expr_ref_vector innerItems(m); innerItems.push_back(ctx.mk_eq_atom(expr->get_arg(1), mk_concat(ts0, ts1))); innerItems.push_back(ctx.mk_eq_atom(mk_strlen(ts0), mk_strlen(expr->get_arg(0)))); - innerItems.push_back(m.mk_ite(ctx.mk_eq_atom(ts0, expr->get_arg(0)), expr, m.mk_not(expr))); + innerItems.push_back(m.mk_ite(ctx.mk_eq_atom(ts0, expr->get_arg(0)), expr, mk_not(m, expr))); expr_ref then1(m.mk_and(innerItems.size(), innerItems.c_ptr()), m); SASSERT(then1); @@ -1138,7 +1147,7 @@ namespace smt { , m); SASSERT(topLevelCond); - expr_ref finalAxiom(m.mk_ite(topLevelCond, then1, m.mk_not(expr)), m); + expr_ref finalAxiom(m.mk_ite(topLevelCond, then1, mk_not(m, expr)), m); SASSERT(finalAxiom); assert_axiom(finalAxiom); } @@ -1162,7 +1171,7 @@ namespace smt { expr_ref_vector innerItems(m); innerItems.push_back(ctx.mk_eq_atom(expr->get_arg(1), mk_concat(ts0, ts1))); innerItems.push_back(ctx.mk_eq_atom(mk_strlen(ts1), mk_strlen(expr->get_arg(0)))); - innerItems.push_back(m.mk_ite(ctx.mk_eq_atom(ts1, expr->get_arg(0)), expr, m.mk_not(expr))); + innerItems.push_back(m.mk_ite(ctx.mk_eq_atom(ts1, expr->get_arg(0)), expr, mk_not(m, expr))); expr_ref then1(m.mk_and(innerItems.size(), innerItems.c_ptr()), m); SASSERT(then1); @@ -1175,7 +1184,7 @@ namespace smt { , m); SASSERT(topLevelCond); - expr_ref finalAxiom(m.mk_ite(topLevelCond, then1, m.mk_not(expr)), m); + expr_ref finalAxiom(m.mk_ite(topLevelCond, then1, mk_not(m, expr)), m); SASSERT(finalAxiom); assert_axiom(finalAxiom); } @@ -1199,7 +1208,7 @@ namespace smt { if (haystackStr.contains(needleStr)) { assert_axiom(ex); } else { - assert_axiom(m.mk_not(ex)); + assert_axiom(mk_not(m, ex)); } return; } @@ -1260,7 +1269,7 @@ namespace smt { SASSERT(tmpLen); thenItems.push_back(ctx.mk_eq_atom(expr->get_arg(0), mk_concat(x3, x4))); thenItems.push_back(ctx.mk_eq_atom(mk_strlen(x3), tmpLen)); - thenItems.push_back(m.mk_not(mk_contains(x3, expr->get_arg(1)))); + thenItems.push_back(mk_not(m, mk_contains(x3, expr->get_arg(1)))); expr_ref thenBranch(m.mk_and(thenItems.size(), thenItems.c_ptr()), m); SASSERT(thenBranch); @@ -1336,7 +1345,7 @@ namespace smt { expr_ref ite1(m.mk_ite( //m_autil.mk_lt(expr->get_arg(2), zeroAst), - m.mk_not(m_autil.mk_ge(expr->get_arg(2), zeroAst)), + mk_not(m, m_autil.mk_ge(expr->get_arg(2), zeroAst)), ctx.mk_eq_atom(resAst, mk_indexof(expr->get_arg(0), expr->get_arg(1))), ite2 ), m); @@ -1379,7 +1388,7 @@ namespace smt { thenItems.push_back(m_autil.mk_ge(indexAst, mk_int(0))); // args[0] = x1 . args[1] . x2 // x1 doesn't contain args[1] - thenItems.push_back(m.mk_not(mk_contains(x2, expr->get_arg(1)))); + thenItems.push_back(mk_not(m, mk_contains(x2, expr->get_arg(1)))); thenItems.push_back(ctx.mk_eq_atom(indexAst, mk_strlen(x1))); bool canSkip = false; @@ -1397,7 +1406,7 @@ namespace smt { expr_ref tmpLen(m_autil.mk_add(indexAst, mk_int(1)), m); thenItems.push_back(ctx.mk_eq_atom(expr->get_arg(0), mk_concat(x3, x4))); thenItems.push_back(ctx.mk_eq_atom(mk_strlen(x3), tmpLen)); - thenItems.push_back(m.mk_not(mk_contains(x4, expr->get_arg(1)))); + thenItems.push_back(mk_not(m, mk_contains(x4, expr->get_arg(1)))); } //---------------------------- // else branch @@ -1417,104 +1426,6 @@ namespace smt { assert_axiom(finalAxiom); } - void theory_str::instantiate_axiom_Substr(enode * e) { - context & ctx = get_context(); - ast_manager & m = get_manager(); - - app * expr = e->get_owner(); - if (axiomatized_terms.contains(expr)) { - TRACE("str", tout << "already set up Substr axiom for " << mk_pp(expr, m) << std::endl;); - return; - } - axiomatized_terms.insert(expr); - - TRACE("str", tout << "instantiate Substr axiom for " << mk_pp(expr, m) << std::endl;); - - expr_ref substrBase(expr->get_arg(0), m); - expr_ref substrPos(expr->get_arg(1), m); - expr_ref substrLen(expr->get_arg(2), m); - SASSERT(substrBase); - SASSERT(substrPos); - SASSERT(substrLen); - - expr_ref zero(m_autil.mk_numeral(rational::zero(), true), m); - expr_ref minusOne(m_autil.mk_numeral(rational::minus_one(), true), m); - SASSERT(zero); - SASSERT(minusOne); - - expr_ref_vector argumentsValid_terms(m); - // pos >= 0 - argumentsValid_terms.push_back(m_autil.mk_ge(substrPos, zero)); - // pos < strlen(base) - // --> pos + -1*strlen(base) < 0 - argumentsValid_terms.push_back(m.mk_not(m_autil.mk_ge( - m_autil.mk_add(substrPos, m_autil.mk_mul(minusOne, substrLen)), - zero))); - - // len >= 0 - argumentsValid_terms.push_back(m_autil.mk_ge(substrLen, zero)); - - expr_ref argumentsValid(mk_and(argumentsValid_terms), m); - SASSERT(argumentsValid); - ctx.internalize(argumentsValid, false); - - // (pos+len) >= strlen(base) - // --> pos + len + -1*strlen(base) >= 0 - expr_ref lenOutOfBounds(m_autil.mk_ge( - m_autil.mk_add(substrPos, substrLen, m_autil.mk_mul(minusOne, mk_strlen(substrBase))), - zero), m); - SASSERT(lenOutOfBounds); - ctx.internalize(argumentsValid, false); - - // Case 1: pos < 0 or pos >= strlen(base) or len < 0 - // ==> (Substr ...) = "" - expr_ref case1_premise(m.mk_not(argumentsValid), m); - SASSERT(case1_premise); - ctx.internalize(case1_premise, false); - expr_ref case1_conclusion(ctx.mk_eq_atom(expr, mk_string("")), m); - SASSERT(case1_conclusion); - ctx.internalize(case1_conclusion, false); - expr_ref case1(rewrite_implication(case1_premise, case1_conclusion), m); - SASSERT(case1); - - // Case 2: (pos >= 0 and pos < strlen(base) and len >= 0) and (pos+len) >= strlen(base) - // ==> base = t0.t1 AND len(t0) = pos AND (Substr ...) = t1 - expr_ref t0(mk_str_var("t0"), m); - expr_ref t1(mk_str_var("t1"), m); - expr_ref case2_conclusion(m.mk_and( - ctx.mk_eq_atom(substrBase, mk_concat(t0,t1)), - ctx.mk_eq_atom(mk_strlen(t0), substrPos), - ctx.mk_eq_atom(expr, t1)), m); - expr_ref case2(rewrite_implication(m.mk_and(argumentsValid, lenOutOfBounds), case2_conclusion), m); - SASSERT(case2); - - // Case 3: (pos >= 0 and pos < strlen(base) and len >= 0) and (pos+len) < strlen(base) - // ==> base = t2.t3.t4 AND len(t2) = pos AND len(t3) = len AND (Substr ...) = t3 - - expr_ref t2(mk_str_var("t2"), m); - expr_ref t3(mk_str_var("t3"), m); - expr_ref t4(mk_str_var("t4"), m); - expr_ref_vector case3_conclusion_terms(m); - case3_conclusion_terms.push_back(ctx.mk_eq_atom(substrBase, mk_concat(t2, mk_concat(t3, t4)))); - case3_conclusion_terms.push_back(ctx.mk_eq_atom(mk_strlen(t2), substrPos)); - case3_conclusion_terms.push_back(ctx.mk_eq_atom(mk_strlen(t3), substrLen)); - case3_conclusion_terms.push_back(ctx.mk_eq_atom(expr, t3)); - expr_ref case3_conclusion(mk_and(case3_conclusion_terms), m); - expr_ref case3(rewrite_implication(m.mk_and(argumentsValid, m.mk_not(lenOutOfBounds)), case3_conclusion), m); - SASSERT(case3); - - ctx.internalize(case1, false); - ctx.internalize(case2, false); - ctx.internalize(case3, false); - - expr_ref finalAxiom(m.mk_and(case1, case2, case3), m); - SASSERT(finalAxiom); - assert_axiom(finalAxiom); - } - -#if 0 - // rewrite - // requires to add th_rewriter to assert_axiom to enforce normal form. void theory_str::instantiate_axiom_Substr(enode * e) { context & ctx = get_context(); ast_manager & m = get_manager(); @@ -1543,9 +1454,10 @@ namespace smt { argumentsValid_terms.push_back(m_autil.mk_ge(substrPos, zero)); // pos < strlen(base) // --> pos + -1*strlen(base) < 0 - argumentsValid_terms.push_back(m.mk_not(m_autil.mk_ge( + argumentsValid_terms.push_back(mk_not(m, m_autil.mk_ge( m_autil.mk_add(substrPos, m_autil.mk_mul(minusOne, substrLen)), zero))); + // len >= 0 argumentsValid_terms.push_back(m_autil.mk_ge(substrLen, zero)); @@ -1575,6 +1487,7 @@ namespace smt { // Case 3: (pos >= 0 and pos < strlen(base) and len >= 0) and (pos+len) < strlen(base) // ==> base = t2.t3.t4 AND len(t2) = pos AND len(t3) = len AND (Substr ...) = t3 + expr_ref t2(mk_str_var("t2"), m); expr_ref t3(mk_str_var("t3"), m); expr_ref t4(mk_str_var("t4"), m); @@ -1586,11 +1499,22 @@ namespace smt { expr_ref case3_conclusion(mk_and(case3_conclusion_terms), m); expr_ref case3(m.mk_implies(m.mk_and(argumentsValid, m.mk_not(lenOutOfBounds)), case3_conclusion), m); - assert_axiom(case1); - assert_axiom(case2); - assert_axiom(case3); + { + th_rewriter rw(m); + + expr_ref case1_rw(case1, m); + rw(case1_rw); + assert_axiom(case1_rw); + + expr_ref case2_rw(case2, m); + rw(case2_rw); + assert_axiom(case2_rw); + + expr_ref case3_rw(case3, m); + rw(case3_rw); + assert_axiom(case3_rw); + } } -#endif void theory_str::instantiate_axiom_Replace(enode * e) { context & ctx = get_context(); @@ -1625,19 +1549,23 @@ namespace smt { expr_ref tmpLen(m_autil.mk_add(i1, mk_strlen(expr->get_arg(1)), mk_int(-1)), m); thenItems.push_back(ctx.mk_eq_atom(expr->get_arg(0), mk_concat(x3, x4))); thenItems.push_back(ctx.mk_eq_atom(mk_strlen(x3), tmpLen)); - thenItems.push_back(m.mk_not(mk_contains(x3, expr->get_arg(1)))); + thenItems.push_back(mk_not(m, mk_contains(x3, expr->get_arg(1)))); thenItems.push_back(ctx.mk_eq_atom(result, mk_concat(x1, mk_concat(expr->get_arg(2), x2)))); // ----------------------- // false branch expr_ref elseBranch(ctx.mk_eq_atom(result, expr->get_arg(0)), m); + th_rewriter rw(m); + expr_ref breakdownAssert(m.mk_ite(condAst, m.mk_and(thenItems.size(), thenItems.c_ptr()), elseBranch), m); - assert_axiom(breakdownAssert); - - SASSERT(breakdownAssert); + expr_ref breakdownAssert_rw(breakdownAssert, m); + rw(breakdownAssert_rw); + assert_axiom(breakdownAssert_rw); expr_ref reduceToResult(ctx.mk_eq_atom(expr, result), m); - assert_axiom(reduceToResult); + expr_ref reduceToResult_rw(reduceToResult, m); + rw(reduceToResult_rw); + assert_axiom(reduceToResult_rw); } void theory_str::instantiate_axiom_str_to_int(enode * e) { @@ -1679,7 +1607,7 @@ namespace smt { expr_ref tl(mk_str_var("tl"), m); expr_ref conclusion1(ctx.mk_eq_atom(S, mk_concat(hd, tl)), m); expr_ref conclusion2(ctx.mk_eq_atom(mk_strlen(hd), m_autil.mk_numeral(rational::one(), true)), m); - expr_ref conclusion3(m.mk_not(ctx.mk_eq_atom(hd, mk_string("0"))), m); + expr_ref conclusion3(mk_not(m, ctx.mk_eq_atom(hd, mk_string("0"))), m); expr_ref conclusion(m.mk_and(conclusion1, conclusion2, conclusion3), m); SASSERT(premise); SASSERT(conclusion); @@ -1703,7 +1631,7 @@ namespace smt { // axiom 1: N < 0 <==> (str.from-int N) = "" expr * N = ex->get_arg(0); { - expr_ref axiom1_lhs(m.mk_not(m_autil.mk_ge(N, m_autil.mk_numeral(rational::zero(), true))), m); + expr_ref axiom1_lhs(mk_not(m, m_autil.mk_ge(N, m_autil.mk_numeral(rational::zero(), true))), m); expr_ref axiom1_rhs(ctx.mk_eq_atom(ex, mk_string("")), m); expr_ref axiom1(ctx.mk_eq_atom(axiom1_lhs, axiom1_rhs), m); SASSERT(axiom1); @@ -1942,7 +1870,7 @@ namespace smt { // inconsistency check: value if (!can_two_nodes_eq(eqc_nn1, eqc_nn2)) { TRACE("str", tout << "inconsistency detected: " << mk_pp(eqc_nn1, m) << " cannot be equal to " << mk_pp(eqc_nn2, m) << std::endl;); - expr_ref to_assert(m.mk_not(ctx.mk_eq_atom(eqc_nn1, eqc_nn2)), m); + expr_ref to_assert(mk_not(m, ctx.mk_eq_atom(eqc_nn1, eqc_nn2)), m); assert_axiom(to_assert); // this shouldn't use the integer theory at all, so we don't allow the option of quick-return return false; @@ -2155,7 +2083,7 @@ namespace smt { expr_ref implyR11(ctx.mk_eq_atom(mk_strlen(arg1), mk_int(makeUpLenArg1)), m); assert_implication(implyL11, implyR11); } else { - expr_ref neg(m.mk_not(implyL11), m); + expr_ref neg(mk_not(m, implyL11), m); assert_axiom(neg); } } @@ -2226,7 +2154,7 @@ namespace smt { expr_ref implyR11(ctx.mk_eq_atom(mk_strlen(arg0), mk_int(makeUpLenArg0)), m); assert_implication(implyL11, implyR11); } else { - expr_ref neg(m.mk_not(implyL11), m); + expr_ref neg(mk_not(m, implyL11), m); assert_axiom(neg); } } @@ -2757,7 +2685,7 @@ namespace smt { } if (!can_two_nodes_eq(new_nn1, new_nn2)) { - expr_ref detected(m.mk_not(ctx.mk_eq_atom(new_nn1, new_nn2)), m); + expr_ref detected(mk_not(m, ctx.mk_eq_atom(new_nn1, new_nn2)), m); TRACE("str", tout << "inconsistency detected: " << mk_ismt2_pp(detected, m) << std::endl;); assert_axiom(detected); return; @@ -4747,12 +4675,10 @@ namespace smt { bool theory_str::get_arith_value(expr* e, rational& val) const { context& ctx = get_context(); ast_manager & m = get_manager(); - - // safety - if (!ctx.e_internalized(e)) { + // safety + if (!ctx.e_internalized(e)) { return false; - } - + } // if an integer constant exists in the eqc, it should be the root enode * en_e = ctx.get_enode(e); enode * root_e = en_e->get_root(); @@ -5003,7 +4929,7 @@ namespace smt { implyR = boolVar; } else { //implyR = Z3_mk_eq(ctx, boolVar, Z3_mk_false(ctx)); - implyR = m.mk_not(boolVar); + implyR = mk_not(m, boolVar); } } else { // ------------------------------------------------------------------------------------------------ @@ -5032,7 +4958,7 @@ namespace smt { litems.push_back(ctx.mk_eq_atom(substrAst, aConcat)); } //implyR = Z3_mk_eq(ctx, boolVar, Z3_mk_false(ctx)); - implyR = m.mk_not(boolVar); + implyR = mk_not(m, boolVar); break; } } @@ -5071,7 +4997,7 @@ namespace smt { implyR = boolVar; } else { // implyR = Z3_mk_eq(ctx, boolVar, Z3_mk_false(ctx)); - implyR = m.mk_not(boolVar); + implyR = mk_not(m, boolVar); } } @@ -5141,7 +5067,7 @@ namespace smt { litems.push_back(ctx.mk_eq_atom(substrAst, aConcat)); } expr_ref implyLHS(mk_and(litems), m); - expr_ref implyR(m.mk_not(boolVar), m); + expr_ref implyR(mk_not(m, boolVar), m); assert_implication(implyLHS, implyR); break; } @@ -6510,7 +6436,7 @@ namespace smt { if (matchRes) { assert_implication(implyL, boolVar); } else { - assert_implication(implyL, m.mk_not(boolVar)); + assert_implication(implyL, mk_not(m, boolVar)); } } } @@ -6598,7 +6524,7 @@ namespace smt { << arg1_str << "\" + \"" << arg2_str << "\" != \"" << const_str << "\"" << "\n";); expr_ref equality(ctx.mk_eq_atom(concat, str), m); - expr_ref diseq(m.mk_not(equality), m); + expr_ref diseq(mk_not(m, equality), m); assert_axiom(diseq); return; } @@ -6616,7 +6542,7 @@ namespace smt { "\" is longer than \"" << const_str << "\"," << " so cannot be concatenated with anything to form it" << "\n";); expr_ref equality(ctx.mk_eq_atom(newConcat, str), m); - expr_ref diseq(m.mk_not(equality), m); + expr_ref diseq(mk_not(m, equality), m); assert_axiom(diseq); return; } else { @@ -6630,7 +6556,7 @@ namespace smt { << "actually \"" << arg2_str << "\"" << "\n";); expr_ref equality(ctx.mk_eq_atom(newConcat, str), m); - expr_ref diseq(m.mk_not(equality), m); + expr_ref diseq(mk_not(m, equality), m); assert_axiom(diseq); return; } else { @@ -8883,15 +8809,30 @@ namespace smt { if (concat_lhs_haseqc && concat_rhs_haseqc && !var_haseqc) { TRACE("str", tout << "backpropagate into " << mk_pp(var, m) << " = " << mk_pp(concat, m) << std::endl << "LHS ~= " << mk_pp(concat_lhs_str, m) << " RHS ~= " << mk_pp(concat_rhs_str, m) << std::endl;); + zstring lhsString, rhsString; u.str.is_string(concat_lhs_str, lhsString); u.str.is_string(concat_rhs_str, rhsString); zstring concatString = lhsString + rhsString; - expr_ref lhs1(ctx.mk_eq_atom(concat_lhs, concat_lhs_str), m); - expr_ref lhs2(ctx.mk_eq_atom(concat_rhs, concat_rhs_str), m); - expr_ref lhs(m.mk_and(lhs1, lhs2), m); - expr_ref rhs(ctx.mk_eq_atom(concat, mk_string(concatString)), m); - assert_implication(lhs, rhs); + + // special handling: don't assert that string constants are equal to themselves + expr_ref_vector lhs_terms(m); + if (!u.str.is_string(concat_lhs)) { + lhs_terms.push_back(ctx.mk_eq_atom(concat_lhs, concat_lhs_str)); + } + if (!u.str.is_string(concat_rhs)) { + lhs_terms.push_back(ctx.mk_eq_atom(concat_rhs, concat_rhs_str)); + } + + if (lhs_terms.empty()) { + // no assumptions on LHS + expr_ref rhs(ctx.mk_eq_atom(concat, mk_string(concatString)), m); + assert_axiom(rhs); + } else { + expr_ref lhs(mk_and(lhs_terms), m); + expr_ref rhs(ctx.mk_eq_atom(concat, mk_string(concatString)), m); + assert_implication(lhs, rhs); + } backpropagation_occurred = true; } } @@ -9887,6 +9828,21 @@ namespace smt { expr_ref freeVarLen(mk_strlen(freeVar), m); SASSERT(freeVarLen); + { + rational freeVar_len_value; + if (get_len_value(freeVar, freeVar_len_value)) { + TRACE("str", tout << "special case: length of freeVar is known to be " << freeVar_len_value << std::endl;); + expr_ref concreteOption(ctx.mk_eq_atom(indicator, mk_string(freeVar_len_value.to_string().c_str()) ), m); + expr_ref concreteValue(ctx.mk_eq_atom( + ctx.mk_eq_atom(indicator, mk_string(freeVar_len_value.to_string().c_str()) ), + ctx.mk_eq_atom(freeVarLen, m_autil.mk_numeral(freeVar_len_value, true))), m); + expr_ref finalAxiom(m.mk_and(concreteOption, concreteValue), m); + SASSERT(finalAxiom); + m_trail.push_back(finalAxiom); + return finalAxiom; + } + } + expr_ref_vector orList(m); expr_ref_vector andList(m); @@ -10201,6 +10157,16 @@ namespace smt { } refresh_theory_var(firstTester); + { + rational freeVar_len_value; + if (get_len_value(freeVar, freeVar_len_value)) { + TRACE("str", tout << "special case: length of freeVar is known to be " << freeVar_len_value << std::endl;); + midPoint = freeVar_len_value; + upperBound = midPoint * 2; + windowSize = upperBound; + } + } + binary_search_len_tester_stack[freeVar].push_back(firstTester); m_trail_stack.push(binary_search_trail(binary_search_len_tester_stack, freeVar)); binary_search_info new_info(lowerBound, midPoint, upperBound, windowSize); @@ -10464,6 +10430,9 @@ namespace smt { // iterate parents if (standAlone) { // I hope this works! + if (!ctx.e_internalized(freeVar)) { + ctx.internalize(freeVar, false); + } enode * e_freeVar = ctx.get_enode(freeVar); enode_vector::iterator it = e_freeVar->begin_parents(); for (; it != e_freeVar->end_parents(); ++it) { diff --git a/src/smt/theory_str.h b/src/smt/theory_str.h index 686fcdd57..acac8cad1 100644 --- a/src/smt/theory_str.h +++ b/src/smt/theory_str.h @@ -18,9 +18,12 @@ #define _THEORY_STR_H_ #include "util/trail.h" +#include "util/union_find.h" +#include "util/scoped_ptr_vector.h" #include "ast/ast_pp.h" #include "ast/arith_decl_plugin.h" #include "ast/rewriter/th_rewriter.h" +#include "ast/seq_decl_plugin.h" #include "smt/smt_theory.h" #include "smt/params/theory_str_params.h" #include "smt/proto_model/value_factory.h" @@ -29,8 +32,6 @@ #include #include #include -#include "ast/seq_decl_plugin.h" -#include "util/union_find.h" namespace smt { @@ -292,6 +293,7 @@ protected: bool avoidLoopCut; bool loopDetected; obj_map > cut_var_map; + scoped_ptr_vector m_cut_allocs; expr_ref m_theoryStrOverlapAssumption_term; obj_hashtable variable_set; diff --git a/src/smt/watch_list.h b/src/smt/watch_list.h index 19d3f20a8..1cc29da5a 100644 --- a/src/smt/watch_list.h +++ b/src/smt/watch_list.h @@ -85,6 +85,10 @@ namespace smt { watch_list(): m_data(0) { } + + watch_list(watch_list && other) : m_data(0) { + std::swap(m_data, other.m_data); + } ~watch_list() { destroy(); diff --git a/src/solver/CMakeLists.txt b/src/solver/CMakeLists.txt index 56864a691..1ffdc35e1 100644 --- a/src/solver/CMakeLists.txt +++ b/src/solver/CMakeLists.txt @@ -6,6 +6,7 @@ z3_add_component(solver smt_logics.cpp solver.cpp solver_na2as.cpp + solver_pool.cpp solver2tactic.cpp tactic2solver.cpp COMPONENT_DEPENDENCIES diff --git a/src/solver/combined_solver.cpp b/src/solver/combined_solver.cpp index 6888dd406..05e75a9a4 100644 --- a/src/solver/combined_solver.cpp +++ b/src/solver/combined_solver.cpp @@ -147,6 +147,7 @@ public: } virtual void updt_params(params_ref const & p) { + solver::updt_params(p); m_solver1->updt_params(p); m_solver2->updt_params(p); updt_local_params(p); @@ -290,8 +291,8 @@ public: return m_solver2->get_assumption(idx - c1); } - virtual std::ostream& display(std::ostream & out) const { - return m_solver1->display(out); + virtual std::ostream& display(std::ostream & out, unsigned n, expr* const* es) const { + return m_solver1->display(out, n, es); } virtual void collect_statistics(statistics & st) const { diff --git a/src/solver/solver.cpp b/src/solver/solver.cpp index c7f385416..89625b20c 100644 --- a/src/solver/solver.cpp +++ b/src/solver/solver.cpp @@ -35,28 +35,29 @@ expr * solver::get_assertion(unsigned idx) const { return 0; } -std::ostream& solver::display(std::ostream & out) const { +std::ostream& solver::display(std::ostream & out, unsigned n, expr* const* assumptions) const { expr_ref_vector fmls(get_manager()); - std::cout << "display 1\n"; + //std::cout << "display 1\n"; get_assertions(fmls); - std::cout << "display 2\n"; + //std::cout << "display 2\n"; ast_pp_util visitor(get_manager()); model_converter_ref mc = get_model_converter(); - std::cout << "display 3\n"; + //std::cout << "display 3\n"; if (mc.get()) { mc->collect(visitor); } - std::cout << "display 4\n"; + //std::cout << "display 4\n"; visitor.collect(fmls); - std::cout << "display 5\n"; + //std::cout << "display 5\n"; + visitor.collect(n, assumptions); visitor.display_decls(out); - std::cout << "display 6\n"; + //std::cout << "display 6\n"; visitor.display_asserts(out, fmls, true); - std::cout << "display 7\n"; + //std::cout << "display 7\n"; if (mc.get()) { mc->display(out); } - std::cout << "display 8\n"; + //std::cout << "display 8\n"; return out; } diff --git a/src/solver/solver.h b/src/solver/solver.h index 0f64c943d..3719b5a6a 100644 --- a/src/solver/solver.h +++ b/src/solver/solver.h @@ -44,6 +44,7 @@ public: - results based on check_sat_result API */ class solver : public check_sat_result { + params_ref m_params; public: virtual ~solver() {} @@ -55,7 +56,12 @@ public: /** \brief Update the solver internal settings. */ - virtual void updt_params(params_ref const & p) { } + virtual void updt_params(params_ref const & p) { m_params.copy(p); } + + /** + \brief Retrieve set of parameters set on solver. + */ + virtual params_ref const& get_params() { return m_params; } /** \brief Store in \c r a description of the configuration @@ -95,7 +101,7 @@ public: \brief Add a lemma to the assertion stack. A lemma is assumed to be a consequence of already asserted formulas. The solver is free to ignore lemmas. */ - virtual void assert_lemma(expr * t) = 0; + virtual void assert_lemma(expr * t) {} /** \brief Create a backtracking point. @@ -188,7 +194,7 @@ public: /** \brief Display the content of this solver. */ - virtual std::ostream& display(std::ostream & out) const; + virtual std::ostream& display(std::ostream & out, unsigned n = 0, expr* const* assumptions = nullptr) const; /** \brief expose model converter when solver produces partially reduced set of assertions. diff --git a/src/solver/solver_pool.cpp b/src/solver/solver_pool.cpp new file mode 100644 index 000000000..b2da00bfa --- /dev/null +++ b/src/solver/solver_pool.cpp @@ -0,0 +1,322 @@ +/** +Copyright (c) 2017 Microsoft Corporation + +Module Name: + + solver_pool.cpp + +Abstract: + + Maintain a pool of solvers + +Author: + + Nikolaj Bjorner + +Notes: + +--*/ + +#include "solver/solver_pool.h" +#include "solver/solver_na2as.h" +#include "ast/proofs/proof_utils.h" +#include "ast/ast_util.h" + +class pool_solver : public solver_na2as { + solver_pool& m_pool; + app_ref m_pred; + proof_ref m_proof; + ref m_base; + expr_ref_vector m_assertions; + unsigned m_head; + expr_ref_vector m_flat; + bool m_pushed; + bool m_in_delayed_scope; + unsigned m_dump_counter; + + bool is_virtual() const { return !m.is_true(m_pred); } +public: + pool_solver(solver* b, solver_pool& pool, app_ref& pred): + solver_na2as(pred.get_manager()), + m_pool(pool), + m_pred(pred), + m_proof(m), + m_base(b), + m_assertions(m), + m_head(0), + m_flat(m), + m_pushed(false), + m_in_delayed_scope(false), + m_dump_counter(0) { + if (is_virtual()) { + solver_na2as::assert_expr(m.mk_true(), pred); + } + } + + virtual ~pool_solver() { + if (m_pushed) pop(get_scope_level()); + if (is_virtual()) { + m_pred = m.mk_not(m_pred); + m_base->assert_expr(m_pred); + } + } + + solver* base_solver() { return m_base.get(); } + + virtual solver* translate(ast_manager& m, params_ref const& p) { UNREACHABLE(); return nullptr; } + virtual void updt_params(params_ref const& p) { solver::updt_params(p); m_base->updt_params(p); } + virtual void collect_param_descrs(param_descrs & r) { m_base->collect_param_descrs(r); } + virtual void collect_statistics(statistics & st) const { m_base->collect_statistics(st); } + + virtual void get_unsat_core(ptr_vector & r) { + m_base->get_unsat_core(r); + unsigned j = 0; + for (unsigned i = 0; i < r.size(); ++i) + if (m_pred != r[i]) + r[j++] = r[i]; + r.shrink(j); + } + + virtual unsigned get_num_assumptions() const { + unsigned sz = solver_na2as::get_num_assumptions(); + return is_virtual() ? sz - 1 : sz; + } + + virtual proof * get_proof() { + scoped_watch _t_(m_pool.m_proof_watch); + if (!m_proof.get()) { + elim_aux_assertions pc(m_pred); + m_proof = m_base->get_proof(); + pc(m, m_proof, m_proof); + } + return m_proof; + } + + void internalize_assertions() { + SASSERT(!m_pushed || m_head == m_assertions.size()); + for (unsigned sz = m_assertions.size(); m_head < sz; ++m_head) { + expr_ref f(m); + f = m.mk_implies(m_pred, (m_assertions.get(m_head))); + m_base->assert_expr(f); + } + } + + virtual lbool check_sat_core(unsigned num_assumptions, expr * const * assumptions) { + SASSERT(!m_pushed || get_scope_level() > 0); + m_proof.reset(); + scoped_watch _t_(m_pool.m_check_watch); + m_pool.m_stats.m_num_checks++; + + stopwatch sw; + sw.start(); + internalize_assertions(); + lbool res = m_base->check_sat(num_assumptions, assumptions); + sw.stop(); + switch (res) { + case l_true: + m_pool.m_check_sat_watch.add(sw); + m_pool.m_stats.m_num_sat_checks++; + break; + case l_undef: + m_pool.m_check_undef_watch.add(sw); + m_pool.m_stats.m_num_undef_checks++; + break; + default: + break; + } + set_status(res); + + if (false /*m_dump_benchmarks && sw.get_seconds() >= m_pool.fparams().m_dump_min_time*/) { + std::stringstream file_name; + file_name << "virt_solver"; + if (is_virtual()) { file_name << "_" << m_pred->get_decl()->get_name(); } + file_name << "_" << (m_dump_counter++) << ".smt2"; + + std::ofstream out(file_name.str().c_str()); + if (!out) { verbose_stream() << "could not open file " << file_name.str() << " for output\n"; } + + out << "(set-info :status "; + switch (res) { + case l_true: out << "sat"; break; + case l_false: out << "unsat"; break; + case l_undef: out << "unknown"; break; + } + out << ")\n"; + m_base->display(out, num_assumptions, assumptions); + bool first = true; + out << "(check-sat"; + for (unsigned i = 0; i < num_assumptions; ++i) { + out << " " << mk_pp(assumptions[i], m); + } + out << ")"; + out << "(exit)\n"; + ::statistics st; + m_base->collect_statistics(st); + st.update("time", sw.get_seconds()); + st.display_smt2(out); + out.close(); + } + return res; + } + + virtual void push_core() { + SASSERT(!m_pushed || get_scope_level() > 0); + if (m_in_delayed_scope) { + // second push + internalize_assertions(); + m_base->push(); + m_pushed = true; + m_in_delayed_scope = false; + } + + if (!m_pushed) { + m_in_delayed_scope = true; + } + else { + SASSERT(m_pushed); + SASSERT(!m_in_delayed_scope); + m_base->push(); + } + } + + virtual void pop_core(unsigned n) { + SASSERT(!m_pushed || get_scope_level() > 0); + if (m_pushed) { + SASSERT(!m_in_delayed_scope); + m_base->pop(n); + m_pushed = get_scope_level() - n > 0; + } + else { + m_in_delayed_scope = get_scope_level() - n > 0; + } + } + + virtual void assert_expr(expr * e) { + SASSERT(!m_pushed || get_scope_level() > 0); + if (m.is_true(e)) return; + if (m_in_delayed_scope) { + internalize_assertions(); + m_base->push(); + m_pushed = true; + m_in_delayed_scope = false; + } + + if (m_pushed) { + m_base->assert_expr(e); + } + else { + m_flat.push_back(e); + flatten_and(m_flat); + m_assertions.append(m_flat); + m_flat.reset(); + } + } + + virtual void get_model_core(model_ref & _m) { m_base->get_model_core(_m); } + + virtual expr * get_assumption(unsigned idx) const { + return solver_na2as::get_assumption(idx + is_virtual()); + } + + virtual std::string reason_unknown() const { return m_base->reason_unknown(); } + virtual void set_reason_unknown(char const* msg) { return m_base->set_reason_unknown(msg); } + virtual void get_labels(svector & r) { return m_base->get_labels(r); } + virtual void set_progress_callback(progress_callback * callback) { m_base->set_progress_callback(callback); } + + virtual expr_ref cube() { return expr_ref(m.mk_true(), m); } + + virtual ast_manager& get_manager() const { return m_base->get_manager(); } + + void refresh(solver* new_base) { + SASSERT(!m_pushed); + m_head = 0; + m_base = new_base; + } + + void reset() { + SASSERT(!m_pushed); + m_head = 0; + m_assertions.reset(); + m_pool.refresh(m_base.get()); + } +}; + +solver_pool::solver_pool(solver* base_solver, unsigned num_solvers_per_pool): + m_base_solver(base_solver), + m_num_solvers_per_pool(num_solvers_per_pool), + m_num_solvers_in_last_pool(0) +{} + + +ptr_vector solver_pool::get_base_solvers() const { + ptr_vector solvers; + for (solver* s0 : m_solvers) { + pool_solver* s = dynamic_cast(s0); + if (!solvers.contains(s->base_solver())) { + solvers.push_back(s->base_solver()); + } + } + return solvers; +} + +void solver_pool::collect_statistics(statistics &st) const { + ptr_vector solvers = get_base_solvers(); + for (solver* s : solvers) s->collect_statistics(st); + st.update("time.pool_solver.smt.total", m_check_watch.get_seconds()); + st.update("time.pool_solver.smt.total.sat", m_check_sat_watch.get_seconds()); + st.update("time.pool_solver.smt.total.undef", m_check_undef_watch.get_seconds()); + st.update("time.pool_solver.proof", m_proof_watch.get_seconds()); + st.update("pool_solver.checks", m_stats.m_num_checks); + st.update("pool_solver.checks.sat", m_stats.m_num_sat_checks); + st.update("pool_solver.checks.undef", m_stats.m_num_undef_checks); +} + +void solver_pool::reset_statistics() { +#if 0 + ptr_vector solvers = get_base_solvers(); + for (solver* s : solvers) { + s->reset_statistics(); + } +#endif + m_stats.reset(); + m_check_sat_watch.reset(); + m_check_undef_watch.reset(); + m_check_watch.reset(); + m_proof_watch.reset(); +} + +solver* solver_pool::mk_solver() { + ref base_solver; + ast_manager& m = m_base_solver->get_manager(); + if (m_solvers.empty() || m_num_solvers_in_last_pool == m_num_solvers_per_pool) { + base_solver = m_base_solver->translate(m, m_base_solver->get_params()); + m_num_solvers_in_last_pool = 0; + } + else { + base_solver = dynamic_cast(m_solvers.back())->base_solver(); + } + m_num_solvers_in_last_pool++; + std::stringstream name; + name << "vsolver#" << m_solvers.size(); + app_ref pred(m.mk_const(symbol(name.str().c_str()), m.mk_bool_sort()), m); + pool_solver* solver = alloc(pool_solver, base_solver.get(), *this, pred); + m_solvers.push_back(solver); + return solver; +} + +void solver_pool::reset_solver(solver* s) { + pool_solver* ps = dynamic_cast(s); + SASSERT(ps); + if (ps) ps->reset(); +} + +void solver_pool::refresh(solver* base_solver) { + ast_manager& m = m_base_solver->get_manager(); + ref new_base = m_base_solver->translate(m, m_base_solver->get_params()); + for (solver* s0 : m_solvers) { + pool_solver* s = dynamic_cast(s0); + if (base_solver == s->base_solver()) { + s->refresh(new_base.get()); + } + } +} diff --git a/src/solver/solver_pool.h b/src/solver/solver_pool.h new file mode 100644 index 000000000..d676ca54d --- /dev/null +++ b/src/solver/solver_pool.h @@ -0,0 +1,69 @@ +/** +Copyright (c) 2017 Microsoft Corporation + +Module Name: + + solver_pool.h + +Abstract: + + Maintain a pool of solvers + +Author: + + Nikolaj Bjorner + Arie Gurfinkel + +Notes: + + This is a revision of spacer_virtual_solver by Arie Gurfinkel + +--*/ +#ifndef SOLVER_POOL_H_ +#define SOLVER_POOL_H_ + +#include "solver/solver.h" +#include "util/stopwatch.h" + +class pool_solver; + +class solver_pool { + + friend class pool_solver; + + struct stats { + unsigned m_num_checks; + unsigned m_num_sat_checks; + unsigned m_num_undef_checks; + stats() { reset(); } + void reset() { memset(this, 0, sizeof(*this)); } + }; + + ref m_base_solver; + unsigned m_num_solvers_per_pool; + unsigned m_num_solvers_in_last_pool; + sref_vector m_solvers; + stats m_stats; + + stopwatch m_check_watch; + stopwatch m_check_sat_watch; + stopwatch m_check_undef_watch; + stopwatch m_proof_watch; + + void refresh(solver* s); + + ptr_vector get_base_solvers() const; + +public: + solver_pool(solver* base_solver, unsigned num_solvers_per_pool); + + void collect_statistics(statistics &st) const; + void reset_statistics(); + + solver* mk_solver(); + + void reset_solver(solver* s); +}; + + +#endif diff --git a/src/solver/tactic2solver.cpp b/src/solver/tactic2solver.cpp index b9f269b6d..dc9f1b25f 100644 --- a/src/solver/tactic2solver.cpp +++ b/src/solver/tactic2solver.cpp @@ -38,7 +38,6 @@ class tactic2solver : public solver_na2as { tactic_ref m_tactic; ref m_mc; symbol m_logic; - params_ref m_params; bool m_produce_models; bool m_produce_proofs; bool m_produce_unsat_cores; @@ -95,7 +94,7 @@ tactic2solver::tactic2solver(ast_manager & m, tactic * t, params_ref const & p, m_tactic = t; m_logic = logic; - m_params = p; + solver::updt_params(p); m_produce_models = produce_models; m_produce_proofs = produce_proofs; @@ -106,7 +105,7 @@ tactic2solver::~tactic2solver() { } void tactic2solver::updt_params(params_ref const & p) { - m_params.append(p); + solver::updt_params(p); } void tactic2solver::collect_param_descrs(param_descrs & r) { @@ -142,7 +141,7 @@ lbool tactic2solver::check_sat_core(unsigned num_assumptions, expr * const * ass m_result = alloc(simple_check_sat_result, m); m_tactic->cleanup(); m_tactic->set_logic(m_logic); - m_tactic->updt_params(m_params); // parameters are allowed to overwrite logic. + m_tactic->updt_params(get_params()); // parameters are allowed to overwrite logic. goal_ref g = alloc(goal, m, m_produce_proofs, m_produce_models, m_produce_unsat_cores); unsigned sz = m_assertions.size(); diff --git a/src/tactic/bv/bv_bounds_tactic.cpp b/src/tactic/bv/bv_bounds_tactic.cpp index 44f920840..a279e441b 100644 --- a/src/tactic/bv/bv_bounds_tactic.cpp +++ b/src/tactic/bv/bv_bounds_tactic.cpp @@ -11,7 +11,9 @@ Abstract: Author: - Nikolaj Bjorner (nbjorner) 2016-2-12 + Nuno Lopes (nlopes) 2016-2-12 + + Nikolaj Bjorner (nbjorner) --*/ @@ -650,11 +652,11 @@ namespace { return false; if (old == intr) return true; - m_scopes.insert(undo_bound(t1, old, false)); + m_scopes.push_back(undo_bound(t1, old, false)); old = intr; } else { m_bound.insert(t1, b); - m_scopes.insert(undo_bound(t1, interval(), true)); + m_scopes.push_back(undo_bound(t1, interval(), true)); } } return true; @@ -692,7 +694,8 @@ namespace { bool was_updated = true; if (b.is_full() && b.tight) { r = m.mk_true(); - } else if (m_bound.find(t1, ctx)) { + } + else if (m_bound.find(t1, ctx)) { if (ctx.implies(b)) { r = m.mk_true(); } @@ -703,12 +706,15 @@ namespace { r = m.mk_eq(t1, m_bv.mk_numeral(rational(intr.l, rational::ui64()), m.get_sort(t1))); } + else { + was_updated = false; + } } else { was_updated = false; } - CTRACE("bv", was_updated, tout << mk_pp(t, m) << " " << b << " (ctx: " << ctx << ") (intr: " << intr << "): " << r << "\n";); + TRACE("bv", tout << mk_pp(t, m) << " " << b << " (ctx: " << ctx << ") (intr: " << intr << "): " << r << "\n";); if (sign && was_updated) r = m.mk_not(r); } @@ -801,6 +807,10 @@ namespace { return alloc(dom_bv_bounds_simplifier, m, m_params); } + virtual unsigned scope_level() const { + return m_scopes.size(); + } + }; } diff --git a/src/tactic/bv/bv_bounds_tactic.h b/src/tactic/bv/bv_bounds_tactic.h index 6c2ce60ed..1d6748b27 100644 --- a/src/tactic/bv/bv_bounds_tactic.h +++ b/src/tactic/bv/bv_bounds_tactic.h @@ -11,7 +11,8 @@ Abstract: Author: - Nikolaj Bjorner (nbjorner) 2016-2-12 + Nuno Lopes (nlopes) 2016-2-12 + Nikolaj Bjorner (nbjorner) --*/ @@ -21,8 +22,15 @@ Author: tactic * mk_bv_bounds_tactic(ast_manager & m, params_ref const & p = params_ref()); +tactic * mk_dom_bv_bounds_tactic(ast_manager & m, params_ref const & p = params_ref()); + /* ADD_TACTIC("propagate-bv-bounds", "propagate bit-vector bounds by simplifying implied or contradictory bounds.", "mk_bv_bounds_tactic(m, p)") + + + ADD_TACTIC("propagate-bv-bounds-new", "propagate bit-vector bounds by simplifying implied or contradictory bounds.", "mk_dom_bv_bounds_tactic(m, p)") + + */ #endif diff --git a/src/tactic/bv/bvarray2uf_rewriter.cpp b/src/tactic/bv/bvarray2uf_rewriter.cpp index 9b67e7011..b92092739 100644 --- a/src/tactic/bv/bvarray2uf_rewriter.cpp +++ b/src/tactic/bv/bvarray2uf_rewriter.cpp @@ -117,7 +117,7 @@ func_decl_ref bvarray2uf_rewriter_cfg::mk_uf_for_array(expr * e) { if (is_uninterp_const(e)) { if (m_emc) m_emc->insert(to_app(e)->get_decl(), - m_array_util.mk_as_array(m_manager.get_sort(e), bv_f)); + m_array_util.mk_as_array(bv_f)); } else if (m_fmc) m_fmc->insert(bv_f); @@ -193,7 +193,7 @@ br_status bvarray2uf_rewriter_cfg::reduce_app(func_decl * f, unsigned num, expr if (is_uninterp_const(e)) { if (m_emc) m_emc->insert(e->get_decl(), - m_array_util.mk_as_array(m_manager.get_sort(e), bv_f)); + m_array_util.mk_as_array(bv_f)); } else if (m_fmc) m_fmc->insert(bv_f); @@ -207,7 +207,7 @@ br_status bvarray2uf_rewriter_cfg::reduce_app(func_decl * f, unsigned num, expr q = m_manager.mk_forall(1, sorts, names, body); extra_assertions.push_back(q); - result = m_array_util.mk_as_array(f->get_range(), bv_f); + result = m_array_util.mk_as_array(bv_f); TRACE("bvarray2uf_rw", tout << "result: " << mk_ismt2_pp(result, m_manager) << ")" << std::endl;); res = BR_DONE; @@ -234,7 +234,7 @@ br_status bvarray2uf_rewriter_cfg::reduce_app(func_decl * f, unsigned num, expr if (is_bv_array(t)) { // From [1]: For every array term t we create a fresh uninterpreted function f_t. f_t = mk_uf_for_array(t); - result = m_array_util.mk_as_array(m_manager.get_sort(t), f_t); + result = m_array_util.mk_as_array(f_t); res = BR_DONE; } else if (has_bv_arrays) { @@ -274,7 +274,7 @@ br_status bvarray2uf_rewriter_cfg::reduce_app(func_decl * f, unsigned num, expr expr * v = args[0]; func_decl_ref f_t(mk_uf_for_array(t), m_manager); - result = m_array_util.mk_as_array(f->get_range(), f_t); + result = m_array_util.mk_as_array(f_t); res = BR_DONE; // Add \forall x . f_t(x) = v @@ -321,7 +321,7 @@ br_status bvarray2uf_rewriter_cfg::reduce_app(func_decl * f, unsigned num, expr expr_ref frllx(m_manager.mk_forall(1, sorts, names, body), m_manager); extra_assertions.push_back(frllx); - result = m_array_util.mk_as_array(f->get_range(), f_t); + result = m_array_util.mk_as_array(f_t); res = BR_DONE; } else if (m_array_util.is_store(f)) { @@ -342,7 +342,7 @@ br_status bvarray2uf_rewriter_cfg::reduce_app(func_decl * f, unsigned num, expr func_decl_ref f_s(mk_uf_for_array(s), m_manager); func_decl_ref f_t(mk_uf_for_array(t), m_manager); - result = m_array_util.mk_as_array(f->get_range(), f_t); + result = m_array_util.mk_as_array(f_t); res = BR_DONE; sort * sorts[1] = { get_index_sort(f->get_range()) }; diff --git a/src/tactic/converter.h b/src/tactic/converter.h index 7fa118e4b..89fc7cccd 100644 --- a/src/tactic/converter.h +++ b/src/tactic/converter.h @@ -29,13 +29,13 @@ public: converter():m_ref_count(0) {} virtual ~converter() {} - void inc_ref() { ++m_ref_count; std::cout << "inc_ref " << m_ref_count << " " << this << "\n"; } + void inc_ref() { ++m_ref_count; } + void dec_ref() { --m_ref_count; - if (m_ref_count == 0) { - std::cout << "dec_ref " << this << "\n"; - dealloc(this); - } + if (m_ref_count == 0) { + dealloc(this); + } } virtual void cancel() {} diff --git a/src/tactic/core/dom_simplify_tactic.cpp b/src/tactic/core/dom_simplify_tactic.cpp index 3a6d55569..2099eebf0 100644 --- a/src/tactic/core/dom_simplify_tactic.cpp +++ b/src/tactic/core/dom_simplify_tactic.cpp @@ -242,7 +242,7 @@ expr_ref dom_simplify_tactic::simplify_ite(app * ite) { r = new_t; } else { - TRACE("tactic", tout << new_c << "\n" << new_t << "\n" << new_e << "\n";); + TRACE("simplify", tout << new_c << "\n" << new_t << "\n" << new_e << "\n";); r = m.mk_ite(new_c, new_t, new_e); } } @@ -441,7 +441,7 @@ ptr_vector const & dom_simplify_tactic::tree(expr * e) { } -// ---------------------- +// --------------------- // expr_substitution_simplifier bool expr_substitution_simplifier::assert_expr(expr * t, bool sign) { diff --git a/src/tactic/core/dom_simplify_tactic.h b/src/tactic/core/dom_simplify_tactic.h index 79bc9728c..56eea8d9a 100644 --- a/src/tactic/core/dom_simplify_tactic.h +++ b/src/tactic/core/dom_simplify_tactic.h @@ -83,6 +83,8 @@ class dom_simplifier { virtual void pop(unsigned num_scopes) = 0; virtual dom_simplifier * translate(ast_manager & m) = 0; + + virtual unsigned scope_level() const = 0; }; @@ -93,7 +95,6 @@ class dom_simplify_tactic : public tactic { expr_ref_vector m_trail, m_args; obj_map m_result; expr_dominators m_dominators; - unsigned m_scope_level; unsigned m_depth; unsigned m_max_depth; ptr_vector m_empty; @@ -116,9 +117,9 @@ class dom_simplify_tactic : public tactic { ptr_vector const & tree(expr * e); expr* idom(expr *e) const { return m_dominators.idom(e); } - unsigned scope_level() { return m_scope_level; } - void pop(unsigned n) { SASSERT(n <= m_scope_level); m_scope_level -= n; m_simplifier->pop(n); } - bool assert_expr(expr* f, bool sign) { m_scope_level++; return m_simplifier->assert_expr(f, sign); } + unsigned scope_level() { return m_simplifier->scope_level(); } + void pop(unsigned n) { SASSERT(n <= m_simplifier->scope_level()); m_simplifier->pop(n); } + bool assert_expr(expr* f, bool sign) { return m_simplifier->assert_expr(f, sign); } bool init(goal& g); @@ -126,8 +127,7 @@ public: dom_simplify_tactic(ast_manager & m, dom_simplifier* s, params_ref const & p = params_ref()): m(m), m_simplifier(s), m_params(p), m_trail(m), m_args(m), - m_dominators(m), - m_scope_level(0), m_depth(0), m_max_depth(1024), m_forward(true) {} + m_dominators(m), m_depth(0), m_max_depth(1024), m_forward(true) {} virtual ~dom_simplify_tactic(); @@ -169,6 +169,8 @@ public: virtual void pop(unsigned num_scopes) { m_scoped_substitution.pop(num_scopes); } + virtual unsigned scope_level() const { return m_scoped_substitution.scope_level(); } + virtual dom_simplifier * translate(ast_manager & m) { SASSERT(m_subst.empty()); return alloc(expr_substitution_simplifier, m); diff --git a/src/tactic/portfolio/bounded_int2bv_solver.cpp b/src/tactic/portfolio/bounded_int2bv_solver.cpp index bb8bb463b..b78728abe 100644 --- a/src/tactic/portfolio/bounded_int2bv_solver.cpp +++ b/src/tactic/portfolio/bounded_int2bv_solver.cpp @@ -33,7 +33,6 @@ Notes: class bounded_int2bv_solver : public solver_na2as { ast_manager& m; - params_ref m_params; mutable bv_util m_bv; mutable arith_util m_arith; mutable expr_ref_vector m_assertions; @@ -53,7 +52,6 @@ public: bounded_int2bv_solver(ast_manager& m, params_ref const& p, solver* s): solver_na2as(m), m(m), - m_params(p), m_bv(m), m_arith(m), m_assertions(m), @@ -63,6 +61,7 @@ public: m_rewriter_ctx(m, p), m_rewriter(m, m_rewriter_ctx) { + solver::updt_params(p); m_bounds.push_back(alloc(bound_manager, m)); } @@ -144,7 +143,7 @@ public: return m_solver->check_sat(num_assumptions, assumptions); } - virtual void updt_params(params_ref const & p) { m_solver->updt_params(p); } + virtual void updt_params(params_ref const & p) { solver::updt_params(p); m_solver->updt_params(p); } virtual void collect_param_descrs(param_descrs & r) { m_solver->collect_param_descrs(r); } virtual void set_produce_models(bool f) { m_solver->set_produce_models(f); } virtual void set_progress_callback(progress_callback * callback) { m_solver->set_progress_callback(callback); } diff --git a/src/tactic/portfolio/enum2bv_solver.cpp b/src/tactic/portfolio/enum2bv_solver.cpp index c74d729b5..57078807d 100644 --- a/src/tactic/portfolio/enum2bv_solver.cpp +++ b/src/tactic/portfolio/enum2bv_solver.cpp @@ -20,32 +20,31 @@ Notes: --*/ -#include "solver/solver_na2as.h" -#include "tactic/tactic.h" #include "ast/bv_decl_plugin.h" #include "ast/datatype_decl_plugin.h" -#include "ast/rewriter/enum2bv_rewriter.h" -#include "tactic/extension_model_converter.h" -#include "tactic/filter_model_converter.h" #include "ast/ast_pp.h" #include "model/model_smt2_pp.h" +#include "tactic/tactic.h" +#include "tactic/extension_model_converter.h" +#include "tactic/filter_model_converter.h" #include "tactic/portfolio/enum2bv_solver.h" +#include "solver/solver_na2as.h" +#include "ast/rewriter/enum2bv_rewriter.h" class enum2bv_solver : public solver_na2as { - ast_manager& m; - params_ref m_params; - ref m_solver; - enum2bv_rewriter m_rewriter; + ast_manager& m; + ref m_solver; + enum2bv_rewriter m_rewriter; public: enum2bv_solver(ast_manager& m, params_ref const& p, solver* s): solver_na2as(m), m(m), - m_params(p), m_solver(s), m_rewriter(m, p) { + solver::updt_params(p); } virtual ~enum2bv_solver() {} @@ -85,11 +84,11 @@ public: } virtual lbool check_sat_core(unsigned num_assumptions, expr * const * assumptions) { - m_solver->updt_params(m_params); + m_solver->updt_params(get_params()); return m_solver->check_sat(num_assumptions, assumptions); } - virtual void updt_params(params_ref const & p) { m_solver->updt_params(p); } + virtual void updt_params(params_ref const & p) { solver::updt_params(p); m_solver->updt_params(p); } virtual void collect_param_descrs(param_descrs & r) { m_solver->collect_param_descrs(r); } virtual void set_produce_models(bool f) { m_solver->set_produce_models(f); } virtual void set_progress_callback(progress_callback * callback) { m_solver->set_progress_callback(callback); } @@ -119,8 +118,8 @@ public: // ensure that enumeration variables that // don't occur in the constraints // are also internalized. - for (unsigned i = 0; i < vars.size(); ++i) { - expr_ref tmp(m.mk_eq(vars[i], vars[i]), m); + for (expr* v : vars) { + expr_ref tmp(m.mk_eq(v, v), m); proof_ref proof(m); m_rewriter(tmp, tmp, proof); } @@ -128,13 +127,13 @@ public: m_solver->assert_expr(bounds); // translate enumeration constants to bit-vectors. - for (unsigned i = 0; i < vars.size(); ++i) { + for (expr* v : vars) { func_decl* f = 0; - if (is_app(vars[i]) && is_uninterp_const(vars[i]) && m_rewriter.enum2bv().find(to_app(vars[i])->get_decl(), f)) { + if (is_app(v) && is_uninterp_const(v) && m_rewriter.enum2bv().find(to_app(v)->get_decl(), f)) { bvars.push_back(m.mk_const(f)); } else { - bvars.push_back(vars[i]); + bvars.push_back(v); } } lbool r = m_solver->get_consequences(asms, bvars, consequences); @@ -161,20 +160,16 @@ public: void filter_model(model_ref& mdl) { filter_model_converter filter(m); - obj_map::iterator it = m_rewriter.enum2bv().begin(), end = m_rewriter.enum2bv().end(); - for (; it != end; ++it) { - filter.insert(it->m_value); + for (auto const& kv : m_rewriter.enum2bv()) { + filter.insert(kv.m_value); } filter(mdl, 0); } void extend_model(model_ref& mdl) { extension_model_converter ext(m); - obj_map::iterator it = m_rewriter.enum2def().begin(), end = m_rewriter.enum2def().end(); - for (; it != end; ++it) { - ext.insert(it->m_key, it->m_value); - - } + for (auto const& kv : m_rewriter.enum2def()) + ext.insert(kv.m_key, kv.m_value); ext(mdl, 0); } diff --git a/src/tactic/portfolio/pb2bv_solver.cpp b/src/tactic/portfolio/pb2bv_solver.cpp index 4998cdecf..74ea9f94f 100644 --- a/src/tactic/portfolio/pb2bv_solver.cpp +++ b/src/tactic/portfolio/pb2bv_solver.cpp @@ -27,7 +27,6 @@ Notes: class pb2bv_solver : public solver_na2as { ast_manager& m; - params_ref m_params; mutable expr_ref_vector m_assertions; mutable ref m_solver; mutable th_rewriter m_th_rewriter; @@ -38,12 +37,12 @@ public: pb2bv_solver(ast_manager& m, params_ref const& p, solver* s): solver_na2as(m), m(m), - m_params(p), m_assertions(m), m_solver(s), m_th_rewriter(m, p), m_rewriter(m, p) { + solver::updt_params(p); } virtual ~pb2bv_solver() {} @@ -78,8 +77,8 @@ public: return m_solver->check_sat(num_assumptions, assumptions); } - virtual void updt_params(params_ref const & p) { m_solver->updt_params(p); m_rewriter.updt_params(p); } - virtual void collect_param_descrs(param_descrs & r) { m_solver->collect_param_descrs(r); m_rewriter.collect_param_descrs(r); } + virtual void updt_params(params_ref const & p) { solver::updt_params(p); m_rewriter.updt_params(p); m_solver->updt_params(p); } + virtual void collect_param_descrs(param_descrs & r) { m_solver->collect_param_descrs(r); m_rewriter.collect_param_descrs(r);} virtual void set_produce_models(bool f) { m_solver->set_produce_models(f); } virtual void set_progress_callback(progress_callback * callback) { m_solver->set_progress_callback(callback); } virtual void collect_statistics(statistics & st) const { diff --git a/src/tactic/sls/bvsls_opt_engine.cpp b/src/tactic/sls/bvsls_opt_engine.cpp index e8547fdfd..502bcbde6 100644 --- a/src/tactic/sls/bvsls_opt_engine.cpp +++ b/src/tactic/sls/bvsls_opt_engine.cpp @@ -238,7 +238,7 @@ bool bvsls_opt_engine::what_if( mpz bvsls_opt_engine::find_best_move( ptr_vector & to_evaluate, - mpz score, + mpz & score, unsigned & best_const, mpz & best_value, unsigned & new_bit, diff --git a/src/tactic/sls/bvsls_opt_engine.h b/src/tactic/sls/bvsls_opt_engine.h index 67d9a5d02..9487130d3 100644 --- a/src/tactic/sls/bvsls_opt_engine.h +++ b/src/tactic/sls/bvsls_opt_engine.h @@ -61,7 +61,7 @@ protected: bool what_if(func_decl * fd, const unsigned & fd_inx, const mpz & temp, mpz & best_score, unsigned & best_const, mpz & best_value); - mpz find_best_move(ptr_vector & to_evaluate, mpz score, + mpz find_best_move(ptr_vector & to_evaluate, mpz & score, unsigned & best_const, mpz & best_value, unsigned & new_bit, move_type & move, mpz const & max_score, expr * objective); diff --git a/src/tactic/sls/sls_tracker.h b/src/tactic/sls/sls_tracker.h index 4ad5c65f4..15f06f096 100644 --- a/src/tactic/sls/sls_tracker.h +++ b/src/tactic/sls/sls_tracker.h @@ -41,7 +41,24 @@ class sls_tracker { struct value_score { value_score() : m(0), value(unsynch_mpz_manager::mk_z(0)), score(0.0), score_prune(0.0), has_pos_occ(0), has_neg_occ(0), distance(0), touched(1) {}; + value_score(value_score && other) : + m(other.m), + value(std::move(other.value)), + score(other.score), + score_prune(other.score_prune), + has_pos_occ(other.has_pos_occ), + has_neg_occ(other.has_neg_occ), + distance(other.distance), + touched(other.touched) {} ~value_score() { if (m) m->del(value); } + void operator=(value_score && other) { + this->~value_score(); + new (this) value_score(std::move(other)); + } + value_score& operator=(value_score& other) { + UNREACHABLE(); + return *this; + } unsynch_mpz_manager * m; mpz value; double score; @@ -50,15 +67,6 @@ class sls_tracker { unsigned has_neg_occ; unsigned distance; // max distance from any root unsigned touched; - value_score & operator=(const value_score & other) { - SASSERT(m == 0 || m == other.m); - if (m) m->set(value, 0); else m = other.m; - m->set(value, other.value); - score = other.score; - distance = other.distance; - touched = other.touched; - return *this; - } }; public: @@ -294,7 +302,7 @@ public: if (!m_scores.contains(n)) { value_score vs; vs.m = & m_mpz_manager; - m_scores.insert(n, vs); + m_scores.insert(n, std::move(vs)); } // Update uplinks @@ -539,7 +547,7 @@ public: rational r_val; unsigned bv_sz; m_bv_util.is_numeral(val, r_val, bv_sz); - mpq q = r_val.to_mpq(); + const mpq& q = r_val.to_mpq(); SASSERT(m_mpz_manager.is_one(q.denominator())); set_value(fd, q.numerator()); } @@ -630,7 +638,7 @@ public: if (m_bv_util.is_bv_sort(s)) return get_random_bv(s); else if (m_manager.is_bool(s)) - return get_random_bool(); + return m_mpz_manager.dup(get_random_bool()); else NOT_IMPLEMENTED_YET(); // This only works for bit-vectors for now. } @@ -653,9 +661,7 @@ public: TRACE("sls", tout << "Abandoned model:" << std::endl; show_model(tout); ); for (entry_point_type::iterator it = m_entry_points.begin(); it != m_entry_points.end(); it++) { - mpz temp = m_zero; - set_value(it->m_value, temp); - m_mpz_manager.del(temp); + set_value(it->m_value, m_zero); } } @@ -931,7 +937,7 @@ public: rational q; if (!m_bv_util.is_numeral(n, q, bv_sz)) NOT_IMPLEMENTED_YET(); - mpq temp = q.to_mpq(); + const mpq& temp = q.to_mpq(); SASSERT(m_mpz_manager.is_one(temp.denominator())); m_mpz_manager.set(result, temp.numerator()); } @@ -1039,7 +1045,6 @@ public: unsigned pos = -1; if (m_ucb) { - value_score vscore; double max = -1.0; // Andreas: Commented things here might be used for track_unsat data structures as done in SLS for SAT. But seems to have no benefit. /* for (unsigned i = 0; i < m_where_false.size(); i++) { @@ -1048,7 +1053,7 @@ public: expr * e = as[i]; if (m_mpz_manager.neq(get_value(e), m_one)) { - vscore = m_scores.find(e); + value_score & vscore = m_scores.find(e); // Andreas: Select the assertion with the greatest ucb score. Potentially add some noise. // double q = vscore.score + m_ucb_constant * sqrt(log((double)m_touched) / vscore.touched); double q = vscore.score + m_ucb_constant * sqrt(log((double)m_touched) / vscore.touched) + m_ucb_noise * get_random_uint(8); diff --git a/src/test/im_float_config.h b/src/test/im_float_config.h index 436d9ecaf..3905358ea 100644 --- a/src/test/im_float_config.h +++ b/src/test/im_float_config.h @@ -63,10 +63,4 @@ public: numeral_manager & m() const { return const_cast(m_manager); } }; -template -inline void del_f_interval(im_float_config & cfg, typename im_float_config::interval & a) { - cfg.m().del(a.m_lower); - cfg.m().del(a.m_upper); -} - #endif diff --git a/src/test/interval.cpp b/src/test/interval.cpp index ba218c010..21b25a9be 100644 --- a/src/test/interval.cpp +++ b/src/test/interval.cpp @@ -125,7 +125,8 @@ static bool mk_interval(im_default_config & cfg, interval & a, bool l_inf, bool } #endif -static void mk_random_interval(im_default_config & cfg, interval & a, unsigned magnitude) { +template +static void mk_random_interval(T & cfg, interval & a, unsigned magnitude) { switch (rand()%3) { case 0: // Neg, Neg @@ -195,11 +196,6 @@ static void mk_random_interval(im_default_config & cfg, interval & a, unsigned m } } -static void del_interval(im_default_config & cfg, interval & a) { - cfg.m().del(a.m_lower); - cfg.m().del(a.m_upper); -} - #define BUFFER_SZ 256 static int g_problem_id = 0; static char g_buffer[BUFFER_SZ]; @@ -238,19 +234,18 @@ static void display_lemmas(unsynch_mpq_manager & nm, char const * result_term, static void tst_ ## NAME(unsigned N, unsigned magnitude) { \ reslimit rl; \ unsynch_mpq_manager nm; \ - im_default_config imc(nm); \ - interval_manager im(rl, imc); \ + interval_manager im(rl, nm); \ interval a, b, r; \ \ for (unsigned i = 0; i < N; i++) { \ - mk_random_interval(imc, a, magnitude); \ - mk_random_interval(imc, b, magnitude); \ + mk_random_interval(im, a, magnitude); \ + mk_random_interval(im, b, magnitude); \ interval_deps deps; \ im.NAME(a, b, r, deps); \ \ display_lemmas(nm, RES_TERM, a, b, r, deps); \ } \ - del_interval(imc, a); del_interval(imc, b); del_interval(imc, r); \ + im.del(a); im.del(b); im.del(r); \ } MK_BINARY(mul, "(* a b)"); @@ -260,56 +255,52 @@ MK_BINARY(sub, "(- a b)"); static void tst_neg(unsigned N, unsigned magnitude) { reslimit rl; unsynch_mpq_manager nm; - im_default_config imc(nm); - interval_manager im(rl, imc); + interval_manager im(rl, nm); interval a, b, r; for (unsigned i = 0; i < N; i++) { - mk_random_interval(imc, a, magnitude); + mk_random_interval(im, a, magnitude); interval_deps deps; im.neg(a, r, deps); display_lemmas(nm, "(- a)", a, b, r, deps); } - del_interval(imc, a); del_interval(imc, b); del_interval(imc, r); + im.del(a); im.del(b); im.del(r); } static void tst_pw_2(unsigned N, unsigned magnitude) { reslimit rl; unsynch_mpq_manager nm; - im_default_config imc(nm); - interval_manager im(rl, imc); + interval_manager im(rl, nm); interval a, b, r; for (unsigned i = 0; i < N; i++) { - mk_random_interval(imc, a, magnitude); + mk_random_interval(im, a, magnitude); interval_deps deps; im.power(a, 2, r, deps); display_lemmas(nm, "(* a a)", a, b, r, deps); } - del_interval(imc, a); del_interval(imc, b); del_interval(imc, r); + im.del(a); im.del(b); im.del(r); } static void tst_pw_3(unsigned N, unsigned magnitude) { reslimit rl; unsynch_mpq_manager nm; - im_default_config imc(nm); - interval_manager im(rl, imc); + interval_manager im(rl, nm); interval a, b, r; for (unsigned i = 0; i < N; i++) { - mk_random_interval(imc, a, magnitude); + mk_random_interval(im, a, magnitude); interval_deps deps; im.power(a, 3, r, deps); display_lemmas(nm, "(* a a a)", a, b, r, deps); } - del_interval(imc, a); del_interval(imc, b); del_interval(imc, r); + im.del(a); im.del(b); im.del(r); } static void tst_root_2(unsigned N, unsigned magnitude, unsigned precision) { reslimit rl; unsynch_mpq_manager nm; - im_default_config imc(nm); - interval_manager im(rl, imc); + interval_manager im(rl, nm); interval a, b, r; scoped_mpq p(nm); p = precision; @@ -317,7 +308,7 @@ static void tst_root_2(unsigned N, unsigned magnitude, unsigned precision) { unsigned i = 0; while (i < N) { - mk_random_interval(imc, a, magnitude); + mk_random_interval(im, a, magnitude); if (!im.lower_is_neg(a)) { i++; interval_deps deps; @@ -325,14 +316,13 @@ static void tst_root_2(unsigned N, unsigned magnitude, unsigned precision) { display_lemmas(nm, "(^ a (/ 1.0 2.0))", a, b, r, deps); } } - del_interval(imc, a); del_interval(imc, b); del_interval(imc, r); + im.del(a); im.del(b); im.del(r); } static void tst_root_3(unsigned N, unsigned magnitude, unsigned precision) { reslimit rl; unsynch_mpq_manager nm; - im_default_config imc(nm); - interval_manager im(rl, imc); + interval_manager im(rl, nm); interval a, b, r; scoped_mpq p(nm); p = precision; @@ -340,25 +330,24 @@ static void tst_root_3(unsigned N, unsigned magnitude, unsigned precision) { unsigned i = 0; while (i < N) { - mk_random_interval(imc, a, magnitude); + mk_random_interval(im, a, magnitude); i++; interval_deps deps; im.nth_root(a, 3, p, r, deps); display_lemmas(nm, "(^ a (/ 1.0 3.0))", a, b, r, deps); } - del_interval(imc, a); del_interval(imc, b); del_interval(imc, r); + im.del(a); im.del(b); im.del(r); } static void tst_inv(unsigned N, unsigned magnitude) { reslimit rl; unsynch_mpq_manager nm; - im_default_config imc(nm); - interval_manager im(rl, imc); + interval_manager im(rl, nm); interval a, b, r; for (unsigned i = 0; i < N; i++) { while (true) { - mk_random_interval(imc, a, magnitude); + mk_random_interval(im, a, magnitude); if (!im.contains_zero(a)) break; } @@ -366,20 +355,19 @@ static void tst_inv(unsigned N, unsigned magnitude) { im.inv(a, r, deps); display_lemmas(nm, "(/ 1 a)", a, b, r, deps); } - del_interval(imc, a); del_interval(imc, b); del_interval(imc, r); + im.del(a); im.del(b); im.del(r); } static void tst_div(unsigned N, unsigned magnitude) { reslimit rl; unsynch_mpq_manager nm; - im_default_config imc(nm); - interval_manager im(rl, imc); + interval_manager im(rl, nm); interval a, b, r; for (unsigned i = 0; i < N; i++) { - mk_random_interval(imc, a, magnitude); + mk_random_interval(im, a, magnitude); while (true) { - mk_random_interval(imc, b, magnitude); + mk_random_interval(im, b, magnitude); if (!im.contains_zero(b)) break; } @@ -387,7 +375,7 @@ static void tst_div(unsigned N, unsigned magnitude) { im.div(a, b, r, deps); display_lemmas(nm, "(/ a b)", a, b, r, deps); } - del_interval(imc, a); del_interval(imc, b); del_interval(imc, r); + im.del(a); im.del(b); im.del(r); } #include "test/im_float_config.h" @@ -396,8 +384,7 @@ static void tst_div(unsigned N, unsigned magnitude) { static void tst_float() { unsynch_mpq_manager qm; mpf_manager fm; - im_float_config ifc(fm); - interval_manager > im(ifc); + interval_manager > im(fm); im_float_config::interval a, b, c; scoped_mpq minus_one_third(qm), one_third(qm), two_third(qm), minus_two_third(qm); qm.set(minus_one_third, -1, 3); @@ -424,15 +411,14 @@ static void tst_float() { im.display(std::cout, c); std::cout << "\n"; - del_f_interval(ifc, a); del_f_interval(ifc, b); del_f_interval(ifc, c); + im.del(a); im.del(b); im.del(r); } #endif void tst_pi() { reslimit rl; unsynch_mpq_manager nm; - im_default_config imc(nm); - interval_manager im(rl, imc); + interval_manager im(rl, nm); interval r; for (unsigned i = 0; i < 8; i++) { im.pi(i, r); @@ -440,7 +426,7 @@ void tst_pi() { nm.display_decimal(std::cout, im.upper(r), 32); std::cout << "\n"; ENSURE(nm.lt(im.lower(r), im.upper(r))); } - del_interval(imc, r); + im.del(r); } #if 0 diff --git a/src/test/main.cpp b/src/test/main.cpp index 33d0abae5..64f754667 100644 --- a/src/test/main.cpp +++ b/src/test/main.cpp @@ -10,27 +10,28 @@ #include "util/memory_manager.h" #include "util/gparams.h" + // // Unit tests fail by asserting. // If they return, we assume the unit test succeeds // and print "PASS" to indicate success. // -#define TST(MODULE) { \ - std::string s("test "); \ - s += #MODULE; \ - void tst_##MODULE(); \ - if (do_display_usage) \ - std::cout << #MODULE << "\n"; \ - for (int i = 0; i < argc; i++) \ - if (test_all || strcmp(argv[i], #MODULE) == 0) { \ - enable_trace(#MODULE); \ - enable_debug(#MODULE); \ - timeit timeit(true, s.c_str()); \ - tst_##MODULE(); \ - std::cout << "PASS" << std::endl; \ - } \ -} +#define TST(MODULE) { \ + std::string s("test "); \ + s += #MODULE; \ + void tst_##MODULE(); \ + if (do_display_usage) \ + std::cout << #MODULE << "\n"; \ + for (int i = 0; i < argc; i++) \ + if (test_all || strcmp(argv[i], #MODULE) == 0) { \ + enable_trace(#MODULE); \ + enable_debug(#MODULE); \ + timeit timeit(true, s.c_str()); \ + tst_##MODULE(); \ + std::cout << "PASS" << std::endl; \ + } \ + } #define TST_ARGV(MODULE) { \ std::string s("test "); \ @@ -208,6 +209,7 @@ int main(int argc, char ** argv) { TST(prime_generator); TST(permutation); TST(nlsat); + if (test_all) return 0; TST(ext_numeral); TST(interval); TST(f2n); @@ -223,7 +225,7 @@ int main(int argc, char ** argv) { TST(heap_trie); TST(karr); TST(no_overflow); - TST(memory); + // TST(memory); TST(datalog_parser); TST_ARGV(datalog_parser_file); TST(dl_query); diff --git a/src/test/nlsat.cpp b/src/test/nlsat.cpp index 4d9d4579e..ecf73843f 100644 --- a/src/test/nlsat.cpp +++ b/src/test/nlsat.cpp @@ -698,10 +698,8 @@ static void tst10() { void tst_nlsat() { tst10(); std::cout << "------------------\n"; - exit(0); tst9(); std::cout << "------------------\n"; - exit(0); tst8(); std::cout << "------------------\n"; tst7(); diff --git a/src/test/proof_checker.cpp b/src/test/proof_checker.cpp index adf77e12e..7a9b619cd 100644 --- a/src/test/proof_checker.cpp +++ b/src/test/proof_checker.cpp @@ -4,11 +4,11 @@ Copyright (c) 2015 Microsoft Corporation --*/ -#include "ast/proof_checker/proof_checker.h" +#include "ast/proofs/proof_checker.h" #include "ast/ast_ll_pp.h" void tst_checker1() { - ast_manager m(PGM_FINE); + ast_manager m(PGM_ENABLED); expr_ref a(m); proof_ref p1(m), p2(m), p3(m), p4(m); expr_ref_vector side_conditions(m); diff --git a/src/test/small_object_allocator.cpp b/src/test/small_object_allocator.cpp index cdac0370d..2f08d553e 100644 --- a/src/test/small_object_allocator.cpp +++ b/src/test/small_object_allocator.cpp @@ -18,8 +18,11 @@ void tst_small_object_allocator() { TRACE("small_object_allocator", tout << "p1: " << (void*)p1 << " q1: " << (void*)q1 << " p2: " << (void*)p2 << "\n";); soa.deallocate(13,p1); + soa.deallocate(14,q1); + soa.deallocate(13,p2); char * p3 = new (soa) char[13]; TRACE("small_object_allocator", tout << "p3: " << (void*)p3 << "\n";); + soa.deallocate(13,p3); char * r1 = new (soa) char[1]; char * r2 = new (soa) char[1]; @@ -36,6 +39,10 @@ void tst_small_object_allocator() { r3 = new (soa) char[1]; TRACE("small_object_allocator", tout << "r1: " << (void*)r1 << " r2: " << (void*)r2 << " r3: " << (void*)r3 << " r4: " << (void*)r4 << "\n";); + soa.deallocate(1,r1); + soa.deallocate(1,r2); + soa.deallocate(1,r3); + soa.deallocate(1,r4); (void)r1; (void)r2; (void)r3; diff --git a/src/test/trigo.cpp b/src/test/trigo.cpp index c1b73c423..686800162 100644 --- a/src/test/trigo.cpp +++ b/src/test/trigo.cpp @@ -39,9 +39,8 @@ static void tst_sine_core(std::ostream & out, unsynch_mpq_manager & nm, interval static void tst_sine(std::ostream & out, unsigned N, unsigned k) { unsynch_mpq_manager nm; - im_default_config imc(nm); reslimit rl; - interval_manager im(rl, imc); + interval_manager im(rl, nm); scoped_mpq a(nm); nm.set(a, 0); tst_sine_core(out, nm, im, a, 1); @@ -67,8 +66,7 @@ static void tst_cosine_core(std::ostream & out, unsynch_mpq_manager & nm, interv static void tst_cosine(std::ostream & out, unsigned N, unsigned k) { reslimit rl; unsynch_mpq_manager nm; - im_default_config imc(nm); - interval_manager im(rl, imc); + interval_manager im(rl, nm); scoped_mpq a(nm); nm.set(a, 0); tst_cosine_core(out, nm, im, a, 1); @@ -100,8 +98,7 @@ template static void tst_float_sine(std::ostream & out, unsigned N, unsigned k) { reslimit rl; fmanager fm; - im_float_config ifc(fm, EBITS, SBITS); - interval_manager > im(rl, ifc); + interval_manager > im(rl, im_float_config(fm, EBITS, SBITS)); _scoped_numeral a(fm); fm.set(a, EBITS, SBITS, static_cast(0)); tst_float_sine_core(out, fm, im, a, 1); @@ -136,8 +133,7 @@ static void tst_mpf_bug() { static void tst_e(std::ostream & out) { reslimit rl; unsynch_mpq_manager nm; - im_default_config imc(nm); - interval_manager im(rl, imc); + interval_manager im(rl, nm); im_default_config::interval r; for (unsigned i = 0; i < 64; i++) { im.e(i, r); @@ -152,8 +148,7 @@ static void tst_e_float(std::ostream & out) { reslimit rl; unsynch_mpq_manager qm; mpf_manager fm; - im_float_config ifc(fm); - interval_manager > im(rl, ifc); + interval_manager > im(rl, fm); scoped_mpq q(qm); im_float_config::interval r; for (unsigned i = 0; i < 64; i++) { @@ -161,7 +156,7 @@ static void tst_e_float(std::ostream & out) { out << fm.to_rational_string(im.lower(r)) << " <= E\n"; out << "E <= " << fm.to_rational_string(im.upper(r)) << "\n"; } - del_f_interval(ifc, r); + im.del(r); } void tst_trigo() { diff --git a/src/util/CMakeLists.txt b/src/util/CMakeLists.txt index 7ed68c89f..85b6f955c 100644 --- a/src/util/CMakeLists.txt +++ b/src/util/CMakeLists.txt @@ -28,6 +28,7 @@ z3_add_component(util lbool.cpp luby.cpp memory_manager.cpp + min_cut.cpp mpbq.cpp mpf.cpp mpff.cpp diff --git a/src/util/buffer.h b/src/util/buffer.h index 503788fa0..c64e23d8b 100644 --- a/src/util/buffer.h +++ b/src/util/buffer.h @@ -149,6 +149,13 @@ public: new (m_buffer + m_pos) T(elem); m_pos++; } + + void push_back(T && elem) { + if (m_pos >= m_capacity) + expand(); + new (m_buffer + m_pos) T(std::move(elem)); + m_pos++; + } void pop_back() { if (CallDestructors) { diff --git a/src/util/container_util.h b/src/util/container_util.h new file mode 100644 index 000000000..e114c87b9 --- /dev/null +++ b/src/util/container_util.h @@ -0,0 +1,122 @@ +/*++ +Copyright (c) 2017 Microsoft Corporation + +Module Name: + + container_util.h + +Abstract: + + Useful functions for containers + +Author: + + Krystof Hoder, Nikolaj Bjorner 2017-10-24 + +Revision History: + + Extracted from dl_util.h + +--*/ + +#ifndef CONTAINER_UTIL_H_ +#define CONTAINER_UTIL_H_ + +// ----------------------------------- +// +// container functions +// +// ----------------------------------- + +template + void set_intersection(Set1 & tgt, const Set2 & src) { + svector to_remove; + for (auto const& itm : tgt) + if (!src.contains(itm)) + to_remove.push_back(itm); + while (!to_remove.empty()) { + tgt.remove(to_remove.back()); + to_remove.pop_back(); + } +} + +template +void set_difference(Set & tgt, const Set & to_remove) { + for (auto const& itm : to_remove) + tgt.remove(itm); +} + +template +void set_union(Set1 & tgt, const Set2 & to_add) { + for (auto const& itm : to_add) + tgt.insert(itm); +} + +template +void unite_disjoint_maps(T & tgt, const T & src) { + for (auto const& kv : src) { + SASSERT(!tgt.contains(kv.m_key)); + tgt.insert(kv.m_key, kv.m_value); + } +} + +template +void collect_map_range(T & acc, const U & map) { + for (auto const& kv : map) + acc.push_back(kv.m_value); +} + + +template +void print_container(const T & begin, const T & end, std::ostream & out) { + T it = begin; + out << "("; + bool first = true; + for(; it!=end; ++it) { + if(first) { first = false; } else { out << ","; } + out << (*it); + } + out << ")"; +} + +template +void print_container(const T & cont, std::ostream & out) { + print_container(cont.begin(), cont.end(), out); +} + +template +void print_container(const ref_vector & cont, std::ostream & out) { + print_container(cont.c_ptr(), cont.c_ptr() + cont.size(), out); +} + +template +void print_map(const T & cont, std::ostream & out) { + out << "("; + bool first = true; + for (auto const& kv : cont) { + if (first) { first = false; } else { out << ","; } + out << kv.m_key << "->" << kv.m_value; + } + out << ")"; +} + +template +unsigned find_index(const It & begin, const It & end, const V & val) { + It it = begin; + for (unsigned idx = 0; it != end; it++, idx++) { + if (*it == val) { + return idx; + } + } + return UINT_MAX; +} + +template +bool containers_equal(const T & begin1, const T & end1, const U & begin2, const U & end2) { + T it1 = begin1; + U it2 = begin2; + for (; it1 != end1 && it2 != end2 && *it1 == *it2; ++it1, ++it2) {}; + return it1 == end1 && it2 == end2; +} + +#endif diff --git a/src/util/f2n.h b/src/util/f2n.h index e5e84f6f0..d55b21d3d 100644 --- a/src/util/f2n.h +++ b/src/util/f2n.h @@ -46,6 +46,9 @@ public: m_manager.set(m_one, ebits, sbits, 1); } + f2n(f2n && other) : m_manager(other.m_manager), m_mode(other.m_mode), m_ebits(other.m_ebits), m_sbits(other.m_sbits), + m_tmp1(std::move(other.m_tmp1)), m_one(std::move(other.m_one)) {} + ~f2n() { m().del(m_tmp1); m().del(m_one); diff --git a/src/util/hashtable.h b/src/util/hashtable.h index 020c47b2b..fa9fef180 100644 --- a/src/util/hashtable.h +++ b/src/util/hashtable.h @@ -54,7 +54,7 @@ public: bool is_used() const { return m_state == HT_USED; } T & get_data() { return m_data; } const T & get_data() const { return m_data; } - void set_data(const T & d) { m_data = d; m_state = HT_USED; } + void set_data(T && d) { m_data = std::move(d); m_state = HT_USED; } void set_hash(unsigned h) { m_hash = h; } void mark_as_deleted() { m_state = HT_DELETED; } void mark_as_free() { m_state = HT_FREE; } @@ -187,10 +187,42 @@ protected: } } + static void move_table(entry * source, unsigned source_capacity, entry * target, unsigned target_capacity) { + SASSERT(target_capacity >= source_capacity); + unsigned target_mask = target_capacity - 1; + entry * source_end = source + source_capacity; + entry * target_end = target + target_capacity; + for (entry * source_curr = source; source_curr != source_end; ++source_curr) { + if (source_curr->is_used()) { + unsigned hash = source_curr->get_hash(); + unsigned idx = hash & target_mask; + entry * target_begin = target + idx; + entry * target_curr = target_begin; + for (; target_curr != target_end; ++target_curr) { + SASSERT(!target_curr->is_deleted()); + if (target_curr->is_free()) { + *target_curr = std::move(*source_curr); + goto end; + } + } + for (target_curr = target; target_curr != target_begin; ++target_curr) { + SASSERT(!target_curr->is_deleted()); + if (target_curr->is_free()) { + *target_curr = std::move(*source_curr); + goto end; + } + } + UNREACHABLE(); + end: + ; + } + } + } + void expand_table() { unsigned new_capacity = m_capacity << 1; entry * new_table = alloc_table(new_capacity); - copy_table(m_table, m_capacity, new_table, new_capacity); + move_table(m_table, m_capacity, new_table, new_capacity); delete_table(); m_table = new_table; m_capacity = new_capacity; @@ -202,7 +234,7 @@ protected: if (memory::is_out_of_memory()) return; entry * new_table = alloc_table(m_capacity); - copy_table(m_table, m_capacity, new_table, m_capacity); + move_table(m_table, m_capacity, new_table, m_capacity); delete_table(); m_table = new_table; m_num_deleted = 0; @@ -321,7 +353,7 @@ public: #define INSERT_LOOP_BODY() { \ if (curr->is_used()) { \ if (curr->get_hash() == hash && equals(curr->get_data(), e)) { \ - curr->set_data(e); \ + curr->set_data(std::move(e)); \ return; \ } \ HS_CODE(m_st_collision++;); \ @@ -330,7 +362,7 @@ public: entry * new_entry; \ if (del_entry) { new_entry = del_entry; m_num_deleted--; } \ else { new_entry = curr; } \ - new_entry->set_data(e); \ + new_entry->set_data(std::move(e)); \ new_entry->set_hash(hash); \ m_size++; \ return; \ @@ -342,7 +374,7 @@ public: } \ } ((void) 0) - void insert(data const & e) { + void insert(data && e) { if ((m_size + m_num_deleted) << 2 > (m_capacity * 3)) { // if ((m_size + m_num_deleted) * 2 > (m_capacity)) { expand_table(); @@ -363,6 +395,11 @@ public: UNREACHABLE(); } + void insert(const data & e) { + data tmp(e); + insert(std::move(tmp)); + } + #define INSERT_LOOP_CORE_BODY() { \ if (curr->is_used()) { \ if (curr->get_hash() == hash && equals(curr->get_data(), e)) { \ @@ -375,7 +412,7 @@ public: entry * new_entry; \ if (del_entry) { new_entry = del_entry; m_num_deleted--; } \ else { new_entry = curr; } \ - new_entry->set_data(e); \ + new_entry->set_data(std::move(e)); \ new_entry->set_hash(hash); \ m_size++; \ et = new_entry; \ @@ -393,7 +430,7 @@ public: Return true if it is a new element, and false otherwise. Store the entry/slot of the table in et. */ - bool insert_if_not_there_core(data const & e, entry * & et) { + bool insert_if_not_there_core(data && e, entry * & et) { if ((m_size + m_num_deleted) << 2 > (m_capacity * 3)) { // if ((m_size + m_num_deleted) * 2 > (m_capacity)) { expand_table(); @@ -415,6 +452,11 @@ public: return 0; } + bool insert_if_not_there_core(const data & e, entry * & et) { + data temp(e); + return insert_if_not_there_core(std::move(temp), et); + } + /** \brief Insert the element e if it is not in the table. Return a reference to e or to an object identical to e diff --git a/src/util/min_cut.cpp b/src/util/min_cut.cpp new file mode 100644 index 000000000..b7c30f546 --- /dev/null +++ b/src/util/min_cut.cpp @@ -0,0 +1,232 @@ +/*++ +Copyright (c) 2017 Arie Gurfinkel + +Module Name: + + min_cut.cpp + +Abstract: + min cut solver + +Author: + Bernhard Gleiss + +Revision History: + + +--*/ +#include "util/min_cut.h" +#include "util/trace.h" + +min_cut::min_cut() { + // push back two empty vectors for source and sink + m_edges.push_back(edge_vector()); + m_edges.push_back(edge_vector()); +} + +unsigned min_cut::new_node() { + m_edges.push_back(edge_vector()); + return m_edges.size() - 1; +} + +void min_cut::add_edge(unsigned int i, unsigned int j, unsigned capacity) { + m_edges.reserve(i + 1); + m_edges[i].push_back(edge(j, capacity)); + TRACE("spacer.mincut", tout << "adding edge (" << i << "," << j << ")\n";); +} + +void min_cut::compute_min_cut(unsigned_vector& cut_nodes) { + if (m_edges.size() == 2) { + return; + } + + m_d.resize(m_edges.size()); + m_pred.resize(m_edges.size()); + + // compute initial distances and number of nodes + compute_initial_distances(); + + unsigned i = 0; + + while (m_d[0] < m_edges.size()) { + unsigned j = get_admissible_edge(i); + + if (j < m_edges.size()) { + // advance(i) + m_pred[j] = i; + i = j; + + // if i is the sink, augment path + if (i == 1) { + augment_path(); + i = 0; + } + } + else { + // retreat + compute_distance(i); + if (i != 0) { + i = m_pred[i]; + } + } + } + + // split nodes into reachable and unreachable ones + bool_vector reachable(m_edges.size()); + compute_reachable_nodes(reachable); + + // find all edges between reachable and unreachable nodes and + // for each such edge, add corresponding lemma to unsat-core + compute_cut_and_add_lemmas(reachable, cut_nodes); +} + +void min_cut::compute_initial_distances() { + unsigned_vector todo; + bool_vector visited(m_edges.size()); + + todo.push_back(0); // start at the source, since we do postorder traversel + + while (!todo.empty()) { + unsigned current = todo.back(); + + // if we haven't already visited current + if (!visited[current]) { + bool exists_unvisited_parent = false; + + // add unprocessed parents to stack for DFS. If there is at least + // one unprocessed parent, don't compute the result + // for current now, but wait until those unprocessed parents are processed + for (auto const& edge : m_edges[current]) { + unsigned parent = edge.node; + + // if we haven't visited the current parent yet + if (!visited[parent]) { + // add it to the stack + todo.push_back(parent); + exists_unvisited_parent = true; + } + } + + // if we already visited all parents, we can visit current too + if (!exists_unvisited_parent) { + visited[current] = true; + todo.pop_back(); + + compute_distance(current); // I.H. all parent distances are already computed + } + } + else { + todo.pop_back(); + } + } +} + +unsigned min_cut::get_admissible_edge(unsigned i) { + for (const auto& edge : m_edges[i]) { + if (edge.weight > 0 && m_d[i] == m_d[edge.node] + 1) { + return edge.node; + } + } + return m_edges.size(); // no element found +} + +void min_cut::augment_path() { + // find bottleneck capacity + unsigned max = std::numeric_limits::max(); + unsigned k = 1; + while (k != 0) { + unsigned l = m_pred[k]; + for (const auto& edge : m_edges[l]) { + if (edge.node == k) { + max = std::min(max, edge.weight); + } + } + k = l; + } + + k = 1; + while (k != 0) { + unsigned l = m_pred[k]; + + // decrease capacity + for (auto& edge : m_edges[l]) { + if (edge.node == k) { + edge.weight -= max; + } + } + // increase reverse flow + bool already_exists = false; + for (auto& edge : m_edges[k]) { + if (edge.node == l) { + already_exists = true; + edge.weight += max; + } + } + if (!already_exists) { + m_edges[k].push_back(edge(1, max)); + } + k = l; + } +} + +void min_cut::compute_distance(unsigned i) { + if (i == 1) { // sink node + m_d[1] = 0; + } + else { + unsigned min = std::numeric_limits::max(); + + // find edge (i,j) with positive residual capacity and smallest distance + for (const auto& edge : m_edges[i]) { + if (edge.weight > 0) { + min = std::min(min, m_d[edge.node] + 1); + } + } + m_d[i] = min; + } +} + +void min_cut::compute_reachable_nodes(bool_vector& reachable) { + unsigned_vector todo; + + todo.push_back(0); + while (!todo.empty()) { + unsigned current = todo.back(); + todo.pop_back(); + + if (!reachable[current]) { + reachable[current] = true; + + for (const auto& edge : m_edges[current]) { + if (edge.weight > 0) { + todo.push_back(edge.node); + } + } + } + } +} + +void min_cut::compute_cut_and_add_lemmas(bool_vector& reachable, unsigned_vector& cut_nodes) { + unsigned_vector todo; + bool_vector visited(m_edges.size()); + + todo.push_back(0); + while (!todo.empty()) { + unsigned current = todo.back(); + todo.pop_back(); + + if (!visited[current]) { + visited[current] = true; + + for (const auto& edge : m_edges[current]) { + unsigned successor = edge.node; + if (reachable[successor]) { + todo.push_back(successor); + } + else { + cut_nodes.push_back(successor); + } + } + } + } +} diff --git a/src/util/min_cut.h b/src/util/min_cut.h new file mode 100644 index 000000000..51a330126 --- /dev/null +++ b/src/util/min_cut.h @@ -0,0 +1,63 @@ +/*++ +Copyright (c) 2017 Arie Gurfinkel + +Module Name: + + min_cut.h + +Abstract: + min cut solver + +Author: + Bernhard Gleiss + +Revision History: + + +--*/ + +#ifndef MIN_CUT_H_ +#define MIN_CUT_H_ + +#include "util/vector.h" + + +class min_cut { +public: + min_cut(); + + /* + \brief create a node + */ + unsigned new_node(); + + /* + \brief add an i -> j edge with (unit) capacity + */ + void add_edge(unsigned i, unsigned j, unsigned capacity = 1); + + /* + \brief produce a min cut between source node = 0 and target node = 1. + NB. the function changes capacities on edges. + */ + void compute_min_cut(unsigned_vector& cut_nodes); + +private: + + typedef svector bool_vector; + struct edge { unsigned node; unsigned weight; edge(unsigned n, unsigned w): node(n), weight(w) {} edge(): node(0), weight(0) {} }; + typedef svector edge_vector; + + vector m_edges; // map from node to all outgoing edges together with their weights (also contains "reverse edges") + unsigned_vector m_d; // approximation of distance from node to sink in residual graph + unsigned_vector m_pred; // predecessor-information for reconstruction of augmenting path + + void compute_initial_distances(); + unsigned get_admissible_edge(unsigned i); + void augment_path(); + void compute_distance(unsigned i); + void compute_reachable_nodes(bool_vector& reachable); + void compute_cut_and_add_lemmas(bool_vector& reachable, unsigned_vector& cut_nodes); +}; + +#endif diff --git a/src/util/mpf.cpp b/src/util/mpf.cpp index 3218419a9..9e309a726 100644 --- a/src/util/mpf.cpp +++ b/src/util/mpf.cpp @@ -40,12 +40,6 @@ mpf::mpf(unsigned _ebits, unsigned _sbits): set(ebits, sbits); } -mpf::mpf(mpf const & other) { - // It is safe if the mpz numbers are small. - // I need it for resize method in vector. - // UNREACHABLE(); -} - mpf::~mpf() { } diff --git a/src/util/mpf.h b/src/util/mpf.h index 8070768b2..e679be558 100644 --- a/src/util/mpf.h +++ b/src/util/mpf.h @@ -50,7 +50,12 @@ class mpf { public: mpf(); mpf(unsigned ebits, unsigned sbits); - mpf(mpf const & other); + mpf(mpf && other) : + ebits(other.ebits), + sbits(other.sbits), + sign(other.sign), + significand(std::move(other.significand)), + exponent(other.exponent) {} ~mpf(); unsigned get_ebits() const { return ebits; } unsigned get_sbits() const { return sbits; } diff --git a/src/util/mpq.h b/src/util/mpq.h index 5aa3ca083..fd0ae13d4 100644 --- a/src/util/mpq.h +++ b/src/util/mpq.h @@ -31,11 +31,10 @@ class mpq { public: mpq(int v):m_num(v), m_den(1) {} mpq():m_den(1) {} + mpq(mpq && other) : m_num(std::move(other.m_num)), m_den(std::move(other.m_den)) {} void swap(mpq & other) { m_num.swap(other.m_num); m_den.swap(other.m_den); } mpz const & numerator() const { return m_num; } mpz const & denominator() const { return m_den; } - - double get_double() const; }; inline void swap(mpq & m1, mpq & m2) { m1.swap(m2); } @@ -745,6 +744,12 @@ public: reset_denominator(a); } + mpq dup(const mpq & source) { + mpq temp; + set(temp, source); + return temp; + } + void swap(mpz & a, mpz & b) { mpz_manager::swap(a, b); } void swap(mpq & a, mpq & b) { diff --git a/src/util/mpz.h b/src/util/mpz.h index 7001b9a42..f04430e17 100644 --- a/src/util/mpz.h +++ b/src/util/mpz.h @@ -94,6 +94,9 @@ class mpz { public: mpz(int v):m_val(v), m_ptr(0) {} mpz():m_val(0), m_ptr(0) {} + mpz(mpz && other) : m_val(other.m_val), m_ptr(0) { + std::swap(m_ptr, other.m_ptr); + } void swap(mpz & other) { std::swap(m_val, other.m_val); std::swap(m_ptr, other.m_ptr); @@ -668,6 +671,12 @@ public: } } + void set(mpz & target, mpz && source) { + del(target); + target.m_val = source.m_val; + std::swap(target.m_ptr, source.m_ptr); + } + void set(mpz & a, int val) { del(a); a.m_val = val; @@ -700,6 +709,12 @@ public: void set(mpz & target, unsigned sz, digit_t const * digits); + mpz dup(const mpz & source) { + mpz temp; + set(temp, source); + return temp; + } + void reset(mpz & a) { del(a); a.m_val = 0; diff --git a/src/util/obj_hashtable.h b/src/util/obj_hashtable.h index 189d1e1a0..df279383b 100644 --- a/src/util/obj_hashtable.h +++ b/src/util/obj_hashtable.h @@ -69,6 +69,10 @@ public: m_key(k), m_value(v) { } + key_data(Key * k, Value && v) : + m_key(k), + m_value(std::move(v)) { + } Value const & get_value() const { return m_value; } Key & get_key () const { return *m_key; } unsigned hash() const { return m_key->hash(); } @@ -86,7 +90,7 @@ public: bool is_used() const { return m_data.m_key != reinterpret_cast(0) && m_data.m_key != reinterpret_cast(1); } key_data const & get_data() const { return m_data; } key_data & get_data() { return m_data; } - void set_data(key_data const & d) { m_data = d; } + void set_data(key_data && d) { m_data = std::move(d); } void set_hash(unsigned h) { SASSERT(h == m_data.hash()); } void mark_as_deleted() { m_data.m_key = reinterpret_cast(1); } void mark_as_free() { m_data.m_key = 0; } @@ -137,6 +141,10 @@ public: void insert(Key * const k, Value const & v) { m_table.insert(key_data(k, v)); } + + void insert(Key * const k, Value && v) { + m_table.insert(key_data(k, std::move(v))); + } key_data const & insert_if_not_there(Key * k, Value const & v) { return m_table.insert_if_not_there(key_data(k, v)); diff --git a/src/util/obj_ref.h b/src/util/obj_ref.h index 1aa562a8f..72762ea5b 100644 --- a/src/util/obj_ref.h +++ b/src/util/obj_ref.h @@ -53,6 +53,10 @@ public: inc_ref(); } + obj_ref(obj_ref && other) : m_obj(0), m_manager(other.m_manager) { + std::swap(m_obj, other.m_obj); + } + ~obj_ref() { dec_ref(); } TManager & get_manager() const { return m_manager; } diff --git a/src/util/rational.h b/src/util/rational.h index 803c562ad..392a1982b 100644 --- a/src/util/rational.h +++ b/src/util/rational.h @@ -41,6 +41,7 @@ public: rational() {} rational(rational const & r) { m().set(m_val, r.m_val); } + rational(rational && r) : m_val(std::move(r.m_val)) {} explicit rational(int n) { m().set(m_val, n); } diff --git a/src/util/ref_vector.h b/src/util/ref_vector.h index 469183b76..f340d8886 100644 --- a/src/util/ref_vector.h +++ b/src/util/ref_vector.h @@ -45,6 +45,10 @@ public: typedef T * data; ref_vector_core(Ref const & r = Ref()):Ref(r) {} + + ref_vector_core(ref_vector_core && other) : + Ref(std::move(other)), + m_nodes(std::move(other.m_nodes)) {} ~ref_vector_core() { dec_range_ref(m_nodes.begin(), m_nodes.end()); @@ -63,7 +67,7 @@ public: void resize(unsigned sz) { if (sz < m_nodes.size()) dec_range_ref(m_nodes.begin() + sz, m_nodes.end()); - m_nodes.resize(sz, 0); + m_nodes.resize(sz); } void resize(unsigned sz, T * d) { @@ -80,7 +84,7 @@ public: void reserve(unsigned sz) { if (sz <= m_nodes.size()) return; - m_nodes.resize(sz, 0); + m_nodes.resize(sz); } void shrink(unsigned sz) { @@ -207,6 +211,8 @@ public: this->append(other); } + ref_vector(ref_vector && other) : super(std::move(other)) {} + ref_vector(TManager & m, unsigned sz, T * const * data): super(ref_manager_wrapper(m)) { this->append(sz, data); diff --git a/src/util/scoped_numeral_vector.h b/src/util/scoped_numeral_vector.h index fdf63bf35..cb9a6b4fd 100644 --- a/src/util/scoped_numeral_vector.h +++ b/src/util/scoped_numeral_vector.h @@ -63,8 +63,7 @@ public: unsigned old_sz = this->size(); if (sz <= old_sz) shrink(sz); - typename Manager::numeral zero(0); - svector::resize(sz, zero); + svector::resize(sz, 0); } }; diff --git a/src/util/scoped_ptr_vector.h b/src/util/scoped_ptr_vector.h index a9ef92766..0bd0fd47e 100644 --- a/src/util/scoped_ptr_vector.h +++ b/src/util/scoped_ptr_vector.h @@ -42,7 +42,7 @@ public: bool empty() const { return m_vector.empty(); } void resize(unsigned sz) { if (sz < m_vector.size()) { - for (unsigned i = m_vector.size(); i < sz; i++) + for (unsigned i = m_vector.size(); i-- > sz; ) dealloc(m_vector[i]); m_vector.shrink(sz); } diff --git a/src/util/stopwatch.h b/src/util/stopwatch.h index 7f2ed3245..9ba707af0 100644 --- a/src/util/stopwatch.h +++ b/src/util/stopwatch.h @@ -185,4 +185,15 @@ public: #endif +struct scoped_watch { + stopwatch &m_sw; + scoped_watch (stopwatch &sw, bool reset=false): m_sw(sw) { + if (reset) m_sw.reset(); + m_sw.start(); + } + ~scoped_watch() { + m_sw.stop (); + } +}; + #endif diff --git a/src/util/util.h b/src/util/util.h index 9c2bbf7b9..931ea34b4 100644 --- a/src/util/util.h +++ b/src/util/util.h @@ -55,6 +55,7 @@ static_assert(sizeof(int64) == 8, "64 bits"); #ifdef _WINDOWS #define SSCANF sscanf_s #define SPRINTF sprintf_s +#define _Exit exit #else #define SSCANF sscanf #define SPRINTF sprintf @@ -333,7 +334,7 @@ bool compare_arrays(const T * array1, const T * array2, unsigned size) { template void force_ptr_array_size(T & v, unsigned sz) { if (sz > v.size()) { - v.resize(sz, 0); + v.resize(sz); } } diff --git a/src/util/vector.h b/src/util/vector.h index f068481db..d2beacfb4 100644 --- a/src/util/vector.h +++ b/src/util/vector.h @@ -26,6 +26,7 @@ Revision History: #include "util/debug.h" #include +#include #include #include "util/memory_manager.h" #include "util/hash.h" @@ -75,9 +76,27 @@ class vector { UNREACHABLE(); throw default_exception("Overflow encountered when expanding vector"); } - SZ *mem = (SZ*)memory::reallocate(reinterpret_cast(m_data)-2, new_capacity_T); - *mem = new_capacity; - m_data = reinterpret_cast(mem + 2); + SZ *mem, *old_mem = reinterpret_cast(m_data) - 2; +#if defined(__GNUC__) && !defined(__clang__) && __GNUC__ < 5 + if (__has_trivial_copy(T)) { +#else + if (std::is_trivially_copyable::value) { +#endif + mem = (SZ*)memory::reallocate(old_mem, new_capacity_T); + m_data = reinterpret_cast(mem + 2); + } else { + mem = (SZ*)memory::allocate(new_capacity_T); + auto old_data = m_data; + auto old_size = size(); + mem[1] = old_size; + m_data = reinterpret_cast(mem + 2); + for (unsigned i = 0; i < old_size; ++i) { + new (&m_data[i]) T(std::move(old_data[i])); + old_data[i].~T(); + } + memory::deallocate(old_mem); + } + *mem = new_capacity; } } @@ -149,6 +168,10 @@ public: SASSERT(size() == source.size()); } + vector(vector&& other) : m_data(0) { + std::swap(m_data, other.m_data); + } + vector(SZ s, T const * data): m_data(0) { for (SZ i = 0; i < s; i++) { @@ -180,6 +203,16 @@ public: return *this; } + vector & operator=(vector && source) { + if (this == &source) { + return *this; + } + destroy(); + m_data = 0; + std::swap(m_data, source.m_data); + return *this; + } + void reset() { if (m_data) { if (CallDestructors) { @@ -293,6 +326,11 @@ public: m_data[idx] = val; } + void set(SZ idx, T && val) { + SASSERT(idx < size()); + m_data[idx] = std::move(val); + } + T & back() { SASSERT(!empty()); return operator[](size() - 1); @@ -319,6 +357,14 @@ public: reinterpret_cast(m_data)[SIZE_IDX]++; } + void push_back(T && elem) { + if (m_data == 0 || reinterpret_cast(m_data)[SIZE_IDX] == reinterpret_cast(m_data)[CAPACITY_IDX]) { + expand_vector(); + } + new (m_data + reinterpret_cast(m_data)[SIZE_IDX]) T(std::move(elem)); + reinterpret_cast(m_data)[SIZE_IDX]++; + } + void insert(T const & elem) { push_back(elem); } @@ -358,7 +404,8 @@ public: } } - void resize(SZ s, T const & elem=T()) { + template + void resize(SZ s, Args args...) { SZ sz = size(); if (s <= sz) { shrink(s); return; } while (s > capacity()) { @@ -368,8 +415,23 @@ public: reinterpret_cast(m_data)[SIZE_IDX] = s; iterator it = m_data + sz; iterator end = m_data + s; - for(; it != end; ++it) { - new (it) T(elem); + for (; it != end; ++it) { + new (it) T(std::forward(args)); + } + } + + void resize(SZ s) { + SZ sz = size(); + if (s <= sz) { shrink(s); return; } + while (s > capacity()) { + expand_vector(); + } + SASSERT(m_data != 0); + reinterpret_cast(m_data)[SIZE_IDX] = s; + iterator it = m_data + sz; + iterator end = m_data + s; + for (; it != end; ++it) { + new (it) T(); } } @@ -440,10 +502,15 @@ public: return m_data[idx]; } - void reserve(SZ s, T const & d = T()) { + void reserve(SZ s, T const & d) { if (s > size()) resize(s, d); } + + void reserve(SZ s) { + if (s > size()) + resize(s); + } }; template @@ -453,7 +520,12 @@ public: ptr_vector(unsigned s):vector(s) {} ptr_vector(unsigned s, T * elem):vector(s, elem) {} ptr_vector(ptr_vector const & source):vector(source) {} + ptr_vector(ptr_vector && other) : vector(std::move(other)) {} ptr_vector(unsigned s, T * const * data):vector(s, const_cast(data)) {} + ptr_vector & operator=(ptr_vector const & source) { + vector::operator=(source); + return *this; + } }; template @@ -463,7 +535,12 @@ public: svector(SZ s):vector(s) {} svector(SZ s, T const & elem):vector(s, elem) {} svector(svector const & source):vector(source) {} + svector(svector && other) : vector(std::move(other)) {} svector(SZ s, T const * data):vector(s, data) {} + svector & operator=(svector const & source) { + vector::operator=(source); + return *this; + } }; typedef svector int_vector; @@ -500,23 +577,4 @@ struct vector_hash : public vector_hash_tpl > template struct svector_hash : public vector_hash_tpl > {}; -#include -// Specialize vector to be an instance of std::vector instead. -// This will catch any regression of issue #564 and #420. - -template <> -class vector : public std::vector { -public: - vector(vector const& other): std::vector(other) {} - vector(size_t sz, char const* s): std::vector(sz, s) {} - vector() {} - - void reset() { clear(); } - - -}; - - - #endif /* VECTOR_H_ */ -