update travis to ubuntu 18.04

just 1 LTS old

contrib/ci/Dockerfiles/z3_base_ubuntu32_16.04.Dockerfile

@@ -1,52 +0,0 @@
-# This base image is not officially supported by Docker it
-# is generated by running
-# ```
-# ./update.sh xenial
-# ```
-# from git@github.com:daald/docker-brew-ubuntu-core-32bit.git
-# at commit 34ea593b40b423755b7d46b6c8c89fc8162ea74b
-#
-# We could actually store the image generated by this Dockerfile
-# rather than just the bare image. However given we have a TravisCI
-# cache I'm not sure if it faster to use the TravisCI cache or to
-# download from DockerHub everytime.
-FROM z3prover/ubuntu32:16.04
-
-RUN apt-get update && \
-    apt-get -y --no-install-recommends install \
-        binutils \
-        clang \
-        clang-3.9 \
-        cmake \
-        doxygen \
-        default-jdk \
-        gcc \
-        gcc-5 \
-        git \
-        graphviz \
-        g++ \
-        g++ \
-        libgmp-dev \
-        libgomp1 \
-        libomp5 \
-        libomp-dev \
-        llvm-3.9 \
-        make \
-        ninja-build \
-        python3 \
-        python3-setuptools \
-        python2.7 \
-        python-setuptools \
-        sudo
-
-# Create `user` user for container with password `user`.  and give it
-# password-less sudo access
-RUN useradd -m user && \
-    echo user:user | chpasswd && \
-    cp /etc/sudoers /etc/sudoers.bak && \
-    echo 'user  ALL=(root) NOPASSWD: ALL' >> /etc/sudoers
-USER user
-WORKDIR /home/user
-# TODO .NET core does not support Linux x86 yet, disable it for now.
-# see: https://github.com/dotnet/coreclr/issues/9265
-ENV ASAN_SYMBOLIZER_PATH=/usr/lib/llvm-3.9/bin/llvm-symbolizer DOTNET_BINDINGS=0

contrib/ci/Dockerfiles/z3_base_ubuntu_14.04.Dockerfile

@@ -1,44 +0,0 @@
-FROM ubuntu:14.04
-
-RUN apt-get update && \
-    apt-get -y --no-install-recommends install \
-        apt-transport-https \
-        binutils \
-        clang-3.9 \
-        curl \
-        doxygen \
-        default-jdk \
-        gcc-multilib \
-        gcc-4.8-multilib \
-        git \
-        graphviz \
-        g++-multilib \
-        g++-4.8-multilib \
-        libgmp-dev \
-        libgomp1 \
-        lib32gomp1 \
-        llvm-3.9 \
-        make \
-        ninja-build \
-        python3 \
-        python3-setuptools \
-        python2.7 \
-        python-setuptools
-
-RUN curl -SL https://packages.microsoft.com/config/ubuntu/14.04/packages-microsoft-prod.deb --output packages-microsoft-prod.deb && \
-    dpkg -i packages-microsoft-prod.deb && \
-    apt-get update && \
-    apt-get -y --no-install-recommends install dotnet-sdk-2.1
-
-RUN curl -SL https://cmake.org/files/v3.12/cmake-3.12.0-Linux-x86_64.sh --output cmake-3.12.0-Linux-x86_64.sh && \
-    sh cmake-3.12.0-Linux-x86_64.sh --prefix=/usr/local --exclude-subdir
-
-# Create `user` user for container with password `user`.  and give it
-# password-less sudo access
-RUN useradd -m user && \
-    echo user:user | chpasswd && \
-    cp /etc/sudoers /etc/sudoers.bak && \
-    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

contrib/ci/Dockerfiles/z3_base_ubuntu_18.04.Dockerfile

@@ -1,28 +1,17 @@
-FROM ubuntu:16.04
+FROM ubuntu:18.04
 
 RUN apt-get update && \
     apt-get -y --no-install-recommends install \
-        apt-transport-https \
-        binutils \
-        clang \
-        clang-3.9 \
         cmake \
+        make \
+        ninja-build \
+        clang \
+        g++ \
         curl \
         doxygen \
         default-jdk \
-        gcc-multilib \
-        gcc-5-multilib \
         git \
         graphviz \
-        g++-multilib \
-        g++-5-multilib \
-        libgmp-dev \
-        libgomp1 \
-        libomp5 \
-        libomp-dev \
-        llvm-3.9 \
-        make \
-        ninja-build \
         python3 \
         python3-setuptools \
         python2.7 \

contrib/ci/Dockerfiles/z3_build.Dockerfile

@@ -5,7 +5,6 @@ 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
@@ -34,7 +33,6 @@ ARG Z3_VERBOSE_BUILD_OUTPUT
 
 ENV \
   ASAN_BUILD=${ASAN_BUILD} \
-  ASAN_DSO=${ASAN_DSO} \
   BUILD_DOCS=${BUILD_DOCS} \
   CC=${CC} \
   CXX=${CXX} \

contrib/ci/scripts/sanitizer_env.sh

@@ -29,33 +29,8 @@ if [ "X${ASAN_BUILD}" = "X1" ]; then
     ASAN_OPTIONS="${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

contrib/suppressions/sanitizers/lsan.txt

@@ -1,5 +1 @@
 # LeakSanitizer suppression file
-
-# Ignore Clang OpenMP leaks.
-# See https://github.com/Z3Prover/z3/issues/1308
-leak:___kmp_allocate