Satisfiability modulo heap-based programs
In this work, we present a semi-decision procedure for a fragment of separation logic with user-defined predicates and Presburger arithmetic. To check the satisfiability of a formula, our procedure iteratively unfolds the formula and examines the derived disjuncts. In each iteration, it searches for...
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| Main Authors: | , , |
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| Format: | text |
| Language: | English |
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Institutional Knowledge at Singapore Management University
2016
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| Online Access: | https://ink.library.smu.edu.sg/sis_research/4937 https://ink.library.smu.edu.sg/context/sis_research/article/5940/viewcontent/Satisfiability.pdf |
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| Institution: | Singapore Management University |
| Language: | English |
| Summary: | In this work, we present a semi-decision procedure for a fragment of separation logic with user-defined predicates and Presburger arithmetic. To check the satisfiability of a formula, our procedure iteratively unfolds the formula and examines the derived disjuncts. In each iteration, it searches for a proof of either satisfiability or unsatisfiability. Our procedure is further enhanced with automatically inferred invariants as well as detection of cyclic proof. We also identify a syntactically restricted fragment of the logic for which our procedure is terminating and thus complete. This decidable fragment is relatively expressive as it can capture a range of sophisticated data structures with non-trivial pure properties, such as size, sortedness and near-balanced. We have implemented the proposed solver and a new system for verifying heap-based programs. We have evaluated our system on benchmark programs from a software verification competition. |
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