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License: MIT Build Status

Boolector

Boolector is a Satisfiability Modulo Theories (SMT) solver for the theories of fixed-size bit-vectors, arrays and uninterpreted functions. It supports the SMT-LIB logics BV, QF_ABV, QF_AUFBV, QF_BV and QF_UFBV. Boolector provides a rich C and Python API and supports incremental solving, both with the SMT-LIB commands push and pop, and as solving under assumptions. The documentation of its API can be found here.

Website

More information about Boolector is available at: https://boolector.github.io

Download

The latest version of Boolector is available on GitHub: https://github.com/boolector/boolector

Prerequisites

To build Boolector from source you need:

  • cmake >= 3.3
  • gcc/clang
  • g++/clang++

To build the python module pyboolector you further need:

  • Cython >= 0.22

Build

Boolector can be built with support for the SAT solvers CaDiCaL, CryptoMiniSat, Lingeling, MiniSAT, and PicoSAT. To build and setup these solvers you can use the scripts setup-{cadical,cms,lingeling,minisat,picosat}.sh in the contrib directory. Optionally, you can place any of these solvers in a directory on the same level as the Boolector source directory or provide a path to configure.sh. You can build Boolector with support for multiple SAT solvers. Note that using MiniSAT will force libboolector.a to depend not only on libz.so but also on libstdc++.so. Thus, if you want to link libboolector.a with MiniSAT backend against your own programs, you need to use -lz -lstdc++ as linking options.

Boolector has one other external dependency, the BTOR2 format tools package. As with the SAT solvers, you can either use the provided script setup-btor2tools.sh in contrib or clone the BTOR2Tools repository into directory btor2tools on the same level as the Boolector repository or provide a path to configure.sh.

Linux and Unix-like OS

Assume that we build Boolector with support for Lingeling:

# Download and build Boolector
git clone https://github.com/boolector/boolector
cd boolector

# Download and build Lingeling
./contrib/setup-lingeling.sh

# Download and build BTOR2Tools
./contrib/setup-btor2tools.sh

# Build Boolector
./configure.sh && cd build && make

All binaries (boolector, btormc, btormbt, btoruntrace) are generated into directory boolector/build/bin, and all libraries (libboolector.a, libboolector.so) are generated into directory boolector/build/lib.

For more build configuration options of Boolector, see configure.sh -h.

To build Boolector with Python bindings you need to install Cython, and btor2tools and SAT solvers must be compiled with flag -fPIC (see build instructions of these tools for more details on how to build as shared library). The provided setup-*.sh scripts automatically compile all dependencies with -fPIC. Then, from Boolector's root directory configure and build Boolector as follows:

./configure.sh --python
cd build
make

To build the API documentation of Boolector, it is required to install Sphinx (>= version 1.2). Then build Boolector and issue:

cd doc
make html

The documentation is then generated into doc/_build/html. Make sure to build Boolector with Python bindings, else the documentation of its Python API will not be included.

Linking against Boolector in CMake projects

Boolector's build system provides a CMake package configuration, which can be used by the find_package() command to provide information about Boolector's include directories, libraries and it's dependencies.

After installing Boolector you can issue the following commands in your CMake project to link against Boolector.

find_package(Boolector)
target_link_libraries(<your_target> Boolector::boolector)

Windows

For building and usage of Boolector on Windows, please see COMPILING_WINDOWS.md.

Usage

For a list of command line options, refer to boolector -h.

For examples and instructions on how to use Boolector's C API, refer to examples/api/c and the API documentation. To build all examples in examples/api/c issue:

cd build
make examples

For examples and instructions on how to use Boolector's Python API, refer to examples/api/python/api_usage_examples.py and the API documentation.
To run api_usage_examples.py, from Boolector's root directory issue:

PYTHONPATH="build/lib" python examples/api/python/api_usage_examples.py

Contributing

Boolector is distributed under the MIT license (see COPYING file). By submitting a contribution you automatically accept the conditions described in COPYING. Additionally, we ask you to certify that you have the right to submit such contributions. To manage this process we use a mechanism known as Developer Certificate of Origin, which can be acknowledged by signing-off your commits with git commit -s. We require all pull requests to be squashed into a single commit and signed-off.

Developer Certificate of Origin
Version 1.1

Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
1 Letterman Drive
Suite D4700
San Francisco, CA, 94129

Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.


Developer's Certificate of Origin 1.1

By making a contribution to this project, I certify that:

(a) The contribution was created in whole or in part by me and I
    have the right to submit it under the open source license
    indicated in the file; or

(b) The contribution is based upon previous work that, to the best
    of my knowledge, is covered under an appropriate open source
    license and I have the right under that license to submit that
    work with modifications, whether created in whole or in part
    by me, under the same open source license (unless I am
    permitted to submit under a different license), as indicated
    in the file; or

(c) The contribution was provided directly to me by some other
    person who certified (a), (b) or (c) and I have not modified
    it.

(d) I understand and agree that this project and the contribution
    are public and that a record of the contribution (including all
    personal information I submit with it, including my sign-off) is
    maintained indefinitely and may be redistributed consistent with
    this project or the open source license(s) involved.

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A Satisfiability Modulo Theories (SMT) solver for the theories of fixed-size bit-vectors, arrays and uninterpreted functions.

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