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arXiv · 1802.04174

Unbounded Software Model Checking with Incremental SAT-Solving

Marko Kleine Büning·Tomas Balyo·Carsten Sinz
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Abstract

This paper describes a novel unbounded software model checking approach to find errors in programs written in the C language based on incremental SAT-solving. Instead of using the traditional assumption based API to incremental SAT solvers we use the DimSpec format that is used in SAT based automated planning. A DimSpec formula consists of four CNF formulas representing the initial, goal and intermediate states and the relations between each pair of neighboring states of a transition system. We present a new tool called LLUMC which encodes the presence of certain errors in a C program into a DimSpec formula, which can be solved by either an incremental SAT-based DimSpec solver or the IC3 algorithm for invariant checking. We evaluate the approach in the context of SAT-based model checking for both the incremental SAT-solving and the IC3 algorithm. We show that our encoding expands the functionality of bounded model checkers by also covering large and infinite loops, while still maintaining a feasible time performance. Furthermore, we demonstrate that our approach offers the opportunity to generate runtime-optimizations by utilizing parallel SAT-solving.

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BibTeXRIS

Marko Kleine Büning, Tomas Balyo, Carsten Sinz. 2018-02-12. Unbounded Software Model Checking with Incremental SAT-Solving. https://arxiv.org/abs/1802.04174

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