[![License: BSD](
    https://img.shields.io/badge/License-BSD%203--Clause-blue.svg)](
        https://opensource.org/licenses/BSD-3-Clause)
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    https://travis-ci.org/CVC4/CVC4.svg?branch=master)](
        https://travis-ci.org/CVC4/CVC4)

CVC4
===============================================================================

CVC4 is a tool for determining the satisfiability of a first order formula
modulo a first order theory (or a combination of such theories).  It is the
fourth in the Cooperating Validity Checker family of tools (CVC, CVC Lite,
CVC3) but does not directly incorporate code from any previous version.

CVC4 is intended to be an open and extensible SMT engine.  It can be used as a
stand-alone tool or as a library.  It has been designed to increase the
performance and reduce the memory overhead of its predecessors.  It is written
entirely in C++ and is released under an open-source software license (see file
[COPYING](https://github.com/CVC4/CVC4/blob/master/COPYING)).


Website
-------------------------------------------------------------------------------

More information about CVC4 is available at:
http://cvc4.cs.stanford.edu/

Download
-------------------------------------------------------------------------------

The latest version of CVC4 is available on GitHub:
https://github.com/CVC4/CVC4

Source tar balls and binaries for releases and latest stable builds of the
[master branch](https://github.com/CVC4/CVC4) on GitHub can be
found [here](http://cvc4.cs.stanford.edu/downloads).


Build and Dependencies
-------------------------------------------------------------------------------

CVC4 can be built on Linux and macOS.  For Windows, CVC4 can be cross-compiled
using Mingw-w64.

For detailed build and installation instructions on these platforms,
see file [INSTALL.md](https://github.com/CVC4/CVC4/blob/master/INSTALL.md).


Getting Started
-------------------------------------------------------------------------------

We recommend that you visit our CVC4 tutorials online at:

  http://cvc4.cs.stanford.edu/wiki/Tutorials

for help getting started using CVC4.

If you need help with using CVC4, please refer to
[http://cvc4.stanford.edu#technical-support](
                                    http://cvc4.stanford.edu#technical-support).

If you are using CVC4 in your work, or incorporating it into software of your
own, we'd like to invite you to leave a description and link to your
project/software on our [Third Party
Applications](http://cvc4.cs.stanford.edu/wiki/Public:Third_Party_Applications).


Bug Reports
-------------------------------------------------------------------------------

If you need to report a bug with CVC4, or make a feature request, please visit
our bugtracker at our [GitHub issues](https://github.com/CVC4/CVC4/issues)
page. We are very grateful for bug reports,  as they help us improve CVC4.


Contributing
-------------------------------------------------------------------------------

Please refer to our [contributing guidelines](CONTRIBUTING.md).


Authors
-------------------------------------------------------------------------------

For a full list of authors, please refer to the
[AUTHORS](https://github.com/CVC4/CVC4/blob/master/AUTHORS) file.