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VCC: Contract-based Modular Verification of Concurrent C

Markus Dahlweid, Michal Moskal, Thomas Santen, Stephan Tobies, and Wolfram Schulte


Most system level software is written in C and executed concurrently. Because such software is often critical for system reliability, it is an ideal target for formal verification. Annotated C and the Verified C Compiler (VCC) form the first modular sound verification methodology for concurrent C that scales to real-world production code. VCC is integrated in Microsoft Visual Studio and it comes with support for verification debugging: an explorer for counterexamples of failed proofs helps to find errors in code or specifications, and a prover log analyzer helps debugging proof attempts that exhaust available resources (memory, time). VCC is currently used to verify the core of Microsoft Hyper-V, consisting of 50,000 lines of system-level C code.


Publication typeInproceedings
Published in31st International Conference on Software Engineering, ICSE 2009
PublisherIEEE Computer Society
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