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Erschienen in:
2015 | OriginalPaper | Buchkapitel
MU-CSeq 0.3: Sequentialization by Read-Implicit and Coarse-Grained Memory Unwindings
(Competition Contribution)
verfasst von : Ermenegildo Tomasco, Omar Inverso, Bernd Fischer, Salvatore La Torre, Gennaro Parlato
Erschienen in: Tools and Algorithms for the Construction and Analysis of Systems
Verlag: Springer Berlin Heidelberg
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We describe a new CSeq module that implements improved algorithms for the verification of multi-threaded C programs with dynamic thread creation. It is based on sequentializing the programs according to a guessed sequence of write operations in the shared memory (memory unwinding, MU). The original algorithm (implemented in MU-CSeq 0.1) stores the values of all shared variables for each write (read-explicit fine-grained MU), which requires multiple copies of the shared variables. Our new algorithms store only the writes (read-implicit MU) or only a subset of the writes (coarse-grained MU), which reduces the memory footprint of the unwinding and so allows larger unwinding bounds.