Publication details

Optimizing and Caching SMT Queries in SymDIVINE (Competition Contribution)


MRÁZEK Jan JONÁŠ Martin ŠTILL Vladimír LAUKO Henrich BARNAT Jiří

Year of publication 2017
Type Article in Proceedings
Conference Tools and Algorithms for the Construction and Analysis of Systems, 23rd International Conference, TACAS 2017, Part II
MU Faculty or unit

Faculty of Informatics

Field Informatics
Keywords program verification; model checking; formula optimizations; caching
Description This paper presents a new version of the tool SymDIVINE, a model-checker for concurrent C/C++ programs. SymDIVINE uses a control-explicit data-symbolic approach to model checking, which allows for the bit-precise verification of programs with inputs, by representing data part of a program state by a first-order bit-vector formula. The new version of the tool employs a refined representation of symbolic states, which allows for efficient caching of smt queries. Moreover, the new version employs additional simplifications of first-order bit-vector formulas, such as elimination of unconstrained variables from quantified formulas. All changes are documented in detail in the paper.
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