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Step coverability algorithms for communicating systems

Lookup NU author(s): Professor Maciej Koutny

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Abstract

Coverability (of states) is an important, useful notion for the behavioural analysis of distributed dynamic systems. For systems like Petri nets, the classical Karp-Miller coverability tree construction is the basis for algorithms to decide questions related to the capacity of local states.We consider a modification of this construction which would allow one to deal with dynamic behaviour consisting of concurrent steps rather than single occurrences of transitions.This leads to an action-based extension of the notion of coverability, viewing bandwidth as a resource. However, when certain constraints are imposed on the steps, systems may exhibitnon-monotonic behaviour. In those cases, new criteria for the termination of the step coverability tree construction are needed. We investigate a general class of Petri nets modelling systems that consist of components communicating through shared buffers and that operate under a maximally concurrent step semantics. Based on the description of their behaviour, we derive a correctly terminating step coverability tree construction for these Petri nets.


Publication metadata

Author(s): Kleijn J, Koutny M

Publication type: Article

Journal: Science of Computer Programming

Year: 2012

Volume: 77

Issue: 7-8

Pages: 955-967

Print publication date: 25/11/2010

ISSN (print): 0167-6423

ISSN (electronic): 1872-7964

Publisher: Elsevier BV

URL: http://dx.doi.org/10.1016/j.scico.2010.11.003

DOI: 10.1016/j.scico.2010.11.003


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