VerCors Example Database

A list of example programs and case studies verified by the VerCors verification toolset

About VerCors

VerCors is a toolset for practical mechanised verification of parallel and concurrent software under different concurrency models, notably heterogeneous and homogeneous threading. VerCors has verification support for multiple languages with concurrency features, such as Java, OpenCL (i.e. GPU kernels and atomics), and OpenMP for C (i.e. compiler directives). VerCors uses separation logic with permission accounting as its logical foundation.

Try online »


The source code of VerCors is publicly available and can be downloaded from Github. Installation instructions and example verification cases are also provided. VerCors has been tested on Linux, MacOS X, and on Windows (via Cygwin). Limited documentation of the annotation language is provided at the Github Wiki.

Download VerCors »


For questions and (technical) support, email to "w.h.m.oortwijn at utwente dot nl". Bug reports and feature requests can be submitted via the issue tracker on Github. A complete list of papers related to the VerCors project is given here.

Contact us »

Example database

Showing 121-139 of 139 items.
IDTitleVerification featuresExample sourceLanguageMore information
101Zero Array (PVL)Arrays, Loop invariants, Quantified permissionsPVLmore info
105OpenMP: Vector addition (PVL)Arrays, Loop vectorisation, Quantified permissionsPVLmore info
106OpenMP: SIMD translationArrays, Iteration contracts, Loop parallelisations, Loop vectorisation, Quantified permissionsPVLmore info
109Statically-scoped parallelismArrays, Iteration contracts, Quantified permissions, Statically-scoped parallelismPVLmore info
110OpenMP: Vector addition (single)Arrays, Loop vectorisation, Quantified permissionsPVLmore info
115Barrier with atomicsArrays, Atomics, Barriers, Loop parallelisations, Quantified permissions, Statically-scoped locking, Statically-scoped parallelismPVLmore info
116Block parallelismIteration contracts, Loop parallelisations, Statically-scoped parallelismPVLmore info
117Invariants and atomicsAtomics, Statically-scoped lockingPVLmore info
118Parallel Block: BlankingArrays, Iteration contracts, Matrices, Quantified permissions, Statically-scoped parallelismPVLmore info
128Permissions: BoxingPVLmore info
134Refute: bad framingPVLmore info
158Longest common prefixArrays, Loop invariants, Quantified permissionsVerifyThis competition 2012PVLmore info
159Relaxed prefixLoop invariants, Quantified permissionsVerifyThis competition 2015PVLmore info
160Verifying wait-notify patternsFork/join concurrency, Locking, Loop invariantsPVLmore info
178GapBufferArrays, Loop invariants, SequencesVerifyThis competition 2018PVLmore info
179ColoredTilesArrays, Iteration contracts, Loop invariants, Quantified permissions, SequencesVerifyThis competition 2018PVLmore info
48Domain of floatsFloats, SequencesSilvermore info
49Domain of listsListsSilvermore info
50Domain of option typesOption typesSilvermore info