CIVL: Formal Verification of Parallel Programs

CIVL is a framework for static analysis and verification of concurrent programs. One of the main challenges to practical application of these techniques is the large number of ways to express concurrency: MPI, OpenMP, CUDA, and Pthreads, for example, are just a few of many "concurrency dialects" in wide use today. These dialects are constantly evolving and it is increasingly common to use several of them in a single "hybrid" program. CIVL addresses these problems by providing a concurrency intermediate verification language, CIVL-C, as well as translators that consume C programs using these dialects and produce CIVL-C. Analysis and verification tools which operate on CIVL-C can then be applied easily to a wide variety of concurrent C programs. We demonstrate CIVL's error detection and verification capabilities on (1) an MPI+OpenMP program that estimates π and contains a subtle race condition, and (2) an MPI-based 1d-wave simulator that fails to conform to a simple sequential implementation.

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