ExpliSAT: Guiding SAT-based software verification with explicit states

Authors:
Sharon Barner;Cindy Eisner;Ziv Glazberg;Daniel Kroening;Ishai Rabinovitz
Affiliations:
IBM Haifa Research Lab;IBM Haifa Research Lab;IBM Haifa Research Lab;ETH Zürich;Mellanox Technologies
Venue:
HVC'06 Proceedings of the 2nd international Haifa verification conference on Hardware and software, verification and testing
Year:
2006

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Abstract

We present a hybrid method for software model checking that combines explicit-state and symbolic techniques. Our method traverses the control flow graph of the program explicitly, and encodes the data values in a CNF formula, which we solve using a SAT solver. In order to avoid traversing control flow paths that do not correspond to a valid execution of the program we introduce the idea of a representative of a control path. We present favorable experimental results, which show that our method scales well both with regards to the nondeterministic data and the number of threads.