Verification of a symmetry detection technique using PVS

Ripon, S. and Miller, A. (2010) Verification of a symmetry detection technique using PVS. In: 10th International Workshop on Automated Verification of Critical Systems (AVoCS'2010), Düsseldorf, Germany, September 21-23, 2010,

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One of the major limitations of model checking is that of state-space explosion. Symmetry reduction is a method that has been successfully used to alleviate this problem for models of systems that consist of sets of identical components. In earlier work, we have introduced a specification language, Promela-Lite, which captures the essential features of Promela but has a fully defined semantics. We used hand proofs to show that a static symmetry detection technique developed for this language is sound, and suitable to be used in a symmetry reduction tool for SPIN. One of the criticisms often levelled at verification implementations, is that they have not been proved mechanically to be correct, i.e., no mechanical formal verification technique has been used to check the soundness of the approach. In this paper, we address this issue by mechanically verifying the correctness of the symmetry detection technique. We do this by embedding the syntax and semantics of Promela-Lite into the theorem prover PVS and using these embeddings to both check the consistency of syntax/semantics definitions, and interactively prove relevant theoretical properties

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Ripon, Dr Shamim and Miller, Professor Alice
Authors: Ripon, S., and Miller, A.
College/School:College of Science and Engineering > School of Computing Science

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
443461Advanced symmetry reduction tools for explicit state model checkingAlice MillerEngineering & Physical Sciences Research Council (EPSRC)EP/E032354/1Computing Science