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Issue title: Application and Theory of Petri Nets and Concurrency 2020
Guest editors: Ryszard Janicki, Slawomir Lasota and Natalia Sidorova
Article type: Research Article
Authors: Thierry-Mieg, Yann; *
Affiliations: Sorbonne Université, CNRS, LIP6, F-75005 Paris, France. Yann.Thierry-Mieg@lip6.fr
Correspondence: [*] Address for correspondence: Sorbonne Université, CNRS, LIP6, F-75005 Paris, France
Abstract: Brute-force model-checking consists in exhaustive exploration of the state-space of a Petri net, and meets the dreaded state-space explosion problem. In contrast, this paper shows how to solve model-checking problems using a combination of techniques that stay in complexity proportional to the size of the net structure rather than to the state-space size. We combine an SMT based over-approximation to prove that some behaviors are unfeasible, an under-approximation using memory-less sampling of runs to find witness traces or counter-examples, and a set of structural reduction rules that can simplify both the system and the property. This approach was able to win by a clear margin the model-checking contest 2020 for reachability queries as well as deadlock detection, thus demonstrating the practical effectiveness and general applicability of the system of rules presented in this paper.
Keywords: Petri nets, Structural Reduction, Model-checking, SMT constraints
DOI: 10.3233/FI-2021-2090
Journal: Fundamenta Informaticae, vol. 183, no. 3-4, pp. 319-342, 2021
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