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COSMOS: A Statistical Model Checker for the Hybrid Automata Stochastic Logic

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5 Author(s)
Ballarini, P. ; INRIA Bretagne Atlantique, France ; Djafri, H. ; Duflot, M. ; Haddad, S.
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This tool paper introduces Cosmos, a statistical model checker for the Hybrid Automata Stochastic Logic (HASL). HASL employs Linear Hybrid Automata (LHA), a gen eralization of Deterministic Timed Automata (DTA), to describe relevant execution paths of a Discrete Event Stochastic Process (DESP), a class of stochastic models which includes, but is not limited to, Markov chains. As a result HASL verification turns out to be a unifying framework where sophisticated temporal reasoning is naturally blended with elaborate reward-based analysis. COSMOS takes as input a DESP (described in terms of a Generalized Stochastic Petri Net), an LHA and an expression Z representing the quantity to be estimated. It returns a confidence interval estimation of Z. COSMOS is written in C++ and is freely available to the research community.

Published in:

Quantitative Evaluation of Systems (QEST), 2011 Eighth International Conference on

Date of Conference:

5-8 Sept. 2011