z3

Z3 Z3 is a theorem prover from Microsoft Research. It is licensed under the MIT license. Windows binary distributions include C++ runtime redistributables If you are not familiar with Z3, you can start here. Pre-built binaries for stable and nightly releases are available here. Z3 can be built using CMake, vcpkg, or Bazel. It provides bindings for several programming languages. See the release notes for notes on various stable releases of Z3. Build status Pull Request & Push Workflows WASM Build Windows Build CI Finite-Field Regressions Determinism Linter Solver Determinism Pulse Native Checker Build Scheduled Workflows Android Build Nightly Build Cross Build F* Master Build MSVC Static MSVC Clang-CL Build Z3 Cache Memory Safety Mark PRs Ready Clang-Tidy Warning Report Manual & Release Workflows Documentation Release Build WASM Release Pyodide Wheel (PyPI) Specialized Workflows Nightly Validation Copilot Setup Agentics Maintenance Dispatch NFV Formal Audit Follow-up / Comment Workflows Determinism Linter PR Comment Solver Determinism PR Comment Pulse Checker Regressions Agentic Workflows API Coherence Code Simplifier Release Notes Workflow Suggestion Academic Citation Issue Backlog Memory Safety Report SMTLIB Benchmark Finder F* NFV PR Audit A3 Python Analysis Code Conventions Compare Stats Anomaly Reporter CSA Analysis Tactic-to-Simplifier Building Z3 using CMake CMake is the preferred and most fully featured build system for Z3. A basic release build is: cmake -S . -B build -DCMAKE_BUILD_TYPE=Release cmake --build build --parallel $(nproc) See README-CMake.md for build options, language bindings, installation, and instructions for consuming Z3 from another CMake project. Z3 uses C++20. On Windows, the recommended version of Visual Studio is therefore VS2019 or later; CMake with the Ninja or Visual Studio generator builds Z3 from the Visual Studio Command Prompt. Security Features (MSVC): When building with Visual Studio/MSVC, a couple of security features are enabled by default for Z3: Control Flow Guard (/guard:cf) - enabled by default to detect attempts to compromise your code by preventing calls to locations other than function entry points, making it more difficult for attackers to execute arbitrary code through control flow redirection Address Space Layout Randomization (/DYNAMICBASE) - enabled by default for memory layout randomization, required by the /GUARD:CF linker option These can be disabled using cmake -S . -B build -DZ3_ENABLE_CFG=OFF if needed Use sudo cmake --install build to install to the system prefix (or set -DCMAKE_INSTALL_PREFIX= at configure time for a custom prefix). To uninstall, consult your platform's package manager, or, since CMake tracks installed files in build/install_manifest.txt, remove those files directly. Building Z3 using vcpkg vcpkg is a full platform package manager. To install Z3 with vcpkg, execute: git clone https://github.com/microsoft/vcpkg.git ./bootstrap-vcpkg.bat # For powershell ./bootstrap-vcpkg.sh # For bash ./vcpkg install z3 Building Z3 using Bazel Z3 can be built using Bazel. This is known to work on Ubuntu with Clang (but may work elsewhere with other compilers): bazel build //... Dependencies Z3 itself has only few dependencies. It uses C++ runtime libraries, including pthreads for multi-threading. It is optionally possible to use GMP for multi-precision integers, but Z3 contains its own self-contained multi-precision functionality. Python is required to build Z3. Building Java, .NET, OCaml and Julia APIs requires installing relevant toolchains. Z3 bindings Z3 has bindings for various programming languages. .NET You can install a NuGet package for the latest release Z3 from nuget.org. With CMake, use the -DZ3_BUILD_DOTNET_BINDINGS=ON option. See examples/dotnet for examples. C These are always enabled. See examples/c for examples. C++ These are always enabled. See examples/c++ for examples. Java With CMake, use the -DZ3_BUILD_JAVA_BINDINGS=ON option. For IDE setup instructions (Eclipse, IntelliJ IDEA, Visual Studio Code) and troubleshooting, see the Java IDE Setup Guide. See examples/java for examples. Go With CMake, use the -DZ3_BUILD_GO_BINDINGS=ON option. Note that Go bindings use CGO and require a Go toolchain (Go 1.20 or later) to build. See examples/go for examples and src/api/go/README.md for complete API documentation. OCaml With CMake, use the -DZ3_BUILD_OCAML_BINDINGS=ON option. See examples/ml for examples. Python You can install the Python wrapper for Z3 for the latest release from pypi using the command: pip install z3-solver With CMake, use the -DZ3_BUILD_PYTHON_BINDINGS=ON option. Note that it is required on certain platforms that the Python package directory (site-packages on most distributions and dist-packages on Debian-based distributions) live under the install prefix. If you use a non-standard prefix you can use the -DCMAKE_INSTALL_PYTHON_PKG_DIR= option to change the Python package directory used for installation. For example: cmake -S . -B build -DCMAKE_INSTALL_PREFIX=/home/leo -DZ3_BUILD_PYTHON_BINDINGS=ON -DCMAKE_INSTALL_PYTHON_PKG_DIR=/home/leo/lib/python3.x/site-packages If you do need to install to a non-standard prefix, a better approach is to use a Python virtual environment and install Z3 there. Under Windows, recall to build inside the Visual C++ native command build environment. Note that the build/python/z3 directory should be accessible from where Python is used with Z3 and it requires libz3.dll to be in the path. virtualenv venv source venv/bin/activate cmake -S . -B build -DCMAKE_INSTALL_PREFIX=$VIRTUAL_ENV -DZ3_BUILD_PYTHON_BINDINGS=ON cmake --build build --parallel $(nproc) cmake --install build # You will find Z3 and the Python bindings installed in the virtual environment venv/bin/z3 -h ... python -c 'import z3; print(z3.get_version_s