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Stainless Release Nightly Build Status Build Status Gitter chat Apache 2.0 License

Verification framework for a subset of the Scala programming language. See

Build and Use

To start quickly, install a JVM and use a recent release. To build the project, run sbt universal:stage. If all goes well, scripts are generated for Scala 3 and Scala 2 versions of the front end:

  • frontends/scalac/target/universal/stage/bin/stainless-scalac
  • frontends/dotty/target/universal/stage/bin/stainless-dotty

Use one of these scripts as you would use scalac to compile Scala files. The default behavior of Stainless is to formally verify files, instead of generating JVM class files. See frontends/benchmarks/verification/valid/ and related directories for some benchmarks and bolts repository for a larger collection. More information is available in the documentation links.

Further Documentation and Learning Materials

To get started, see videos:

or see local documentation chapters, such as:

There is also a Stainless EPFL Page.

License

Stainless is released under the Apache 2.0 license. See the LICENSE file for more information.


Relation to Inox

Stainless relies on Inox to solve the various queries stemming from program verification. Inox supports model-complete queries in a feature-rich fragment that lets Stainless focus on program transformations and soundness of both contract and termination checking and uses its own reasoning steps, as well as invocations to solvers (theorem provers) z3, CVC4, and Princess.