diff --git a/configure b/configure
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diff --git a/contrib/ci/scripts/build_z3_cmake.sh b/contrib/ci/scripts/build_z3_cmake.sh
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diff --git a/contrib/ci/scripts/install_deps_osx.sh b/contrib/ci/scripts/install_deps_osx.sh
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diff --git a/contrib/ci/scripts/test_z3_docs.sh b/contrib/ci/scripts/test_z3_docs.sh
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diff --git a/contrib/ci/scripts/test_z3_examples_cmake.sh b/contrib/ci/scripts/test_z3_examples_cmake.sh
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diff --git a/contrib/ci/scripts/test_z3_install_cmake.sh b/contrib/ci/scripts/test_z3_install_cmake.sh
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diff --git a/contrib/ci/scripts/test_z3_system_tests.sh b/contrib/ci/scripts/test_z3_system_tests.sh
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diff --git a/contrib/ci/scripts/test_z3_unit_tests_cmake.sh b/contrib/ci/scripts/test_z3_unit_tests_cmake.sh
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diff --git a/contrib/ci/scripts/travis_ci_entry_point.sh b/contrib/ci/scripts/travis_ci_entry_point.sh
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diff --git a/contrib/ci/scripts/travis_ci_linux_entry_point.sh b/contrib/ci/scripts/travis_ci_linux_entry_point.sh
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diff --git a/contrib/ci/scripts/travis_ci_osx_entry_point.sh b/contrib/ci/scripts/travis_ci_osx_entry_point.sh
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diff --git a/contrib/cmake/bootstrap.py b/contrib/cmake/bootstrap.py
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diff --git a/scripts/build_libcxx_msan.sh b/scripts/build_libcxx_msan.sh
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diff --git a/scripts/mk_consts_files.py b/scripts/mk_consts_files.py
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diff --git a/scripts/mk_def_file.py b/scripts/mk_def_file.py
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diff --git a/scripts/mk_gparams_register_modules_cpp.py b/scripts/mk_gparams_register_modules_cpp.py
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diff --git a/scripts/mk_install_tactic_cpp.py b/scripts/mk_install_tactic_cpp.py
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diff --git a/scripts/mk_mem_initializer_cpp.py b/scripts/mk_mem_initializer_cpp.py
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diff --git a/scripts/mk_pat_db.py b/scripts/mk_pat_db.py
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diff --git a/scripts/pyg2hpp.py b/scripts/pyg2hpp.py
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diff --git a/scripts/trackall.sh b/scripts/trackall.sh
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diff --git a/scripts/update_api.py b/scripts/update_api.py
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diff --git a/src/math/lp/nla_core.cpp b/src/math/lp/nla_core.cpp
index 78d1a657e..94371039b 100644
--- a/src/math/lp/nla_core.cpp
+++ b/src/math/lp/nla_core.cpp
@@ -1474,9 +1474,10 @@ lbool core::check(vector<lemma>& l_vec) {
             m_tangents.tangent_lemma();
     }
 
+#if 0
     if (false && l_vec.empty() && !done()) 
         ret = m_nra.check();
-
+#endif
     if (ret == l_undef && !l_vec.empty() && m_reslim.inc()) 
         ret = l_false;