Symbiotic-Witch: A Klee-Based Violation Witness Checker

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AYAZIOVÁ Paulína CHALUPA Marek STREJČEK Jan

Rok publikování 2022
Druh Článek ve sborníku
Konference Tools and Algorithms for the Construction and Analysis of Systems - 28th International Conference, TACAS 2022, Held as Part of the European Joint Conferences on Theory and Practice of Software, ETAPS 2022, Munich, Germany, April 2-7, 2022, Proceedings, Part II
Fakulta / Pracoviště MU

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Citace
www https://link.springer.com/chapter/10.1007/978-3-030-99527-0_33
Doi http://dx.doi.org/10.1007/978-3-030-99527-0_33
Klíčová slova Symbiotic;witness-validator;SV-COMP;verification witness
Popis Symbiotic-Witch is a new tool for checking violation witnesses in the GraphML-based format used at SV-COMP since 2015. Roughly speaking, Symbiotic-Witch symbolically executes a given program with Klee and simultaneously tracks the set of nodes the witness automaton can be in. Moreover, it reads the return values of nondeterministic functions specified in the witness and uses them to prune the symbolic execution. The violation witness is confirmed if the symbolic execution reaches an error and the current set of witness nodes contains a matching violation node. Symbiotic-Witch currently supports violation witnesses of reachability safety, memory safety, memory cleanup, and overflow properties.
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