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Quantitative Model Checking of Systems with Degradation

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3 Author(s)
Barnat, J. ; Fac. of Inf., Masaryk Univ., Brno, Czech Republic ; Cerna, I. ; Tůmová, J.

In this paper we describe a rather specialized quality of a system - the degradation. We demonstrate systems that naturally incorporate degradation phenomenon and we show how these systems can be verified by adapting the standard automata-based approach to LTL model checking. We introduce Buchi Automata with Degradation Constraints (BADCs) to specify the desired properties of systems with degradation and we describe how these can be used for verification. A major obstacle in the verification process is that the synchronous product of the system and the Buchi automaton may be infinite, which we deal with by introducing a normal form of the Buchi automata and normalizing procedure. We also show that the newly introduced formalism can be used to distinguish MDPs indistinguishable by any LTL, PCTL or even PCTL* formula.

Published in:

Quantitative Evaluation of Systems, 2009. QEST '09. Sixth International Conference on the

Date of Conference:

13-16 Sept. 2009