Tata Institute of Fundamental Research

Statistical Model Checking for Unbounded Temporal Properties

STCS Seminar
Speaker: Przemyslaw Daca (Institute of Science and Technology Am Campus 1 A - 3400 Klosterneuburg Austria)
Organiser: Ashutosh Gupta
Date: Tuesday, 1 Sep 2015, 15:30 to 16:30
Venue: A-212 (STCS Seminar Room)

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Abstract:  Abstract: In this talk, I present a new algorithm for the statistical model checking of Markov chains with respect to unbounded temporal properties, such as reachability and full linear temporal logic. The main idea is that we monitor each simulation run on the fly, in order to detect quickly if a bottom strongly connected component is entered with high probability, in which case the simulation run can be terminated early. As a result, our simulation runs are often much shorter than required by termination bounds that are computed a priori for a desired level of confidence and size of the state space. In comparison to previous algorithms for statistical model checking, for a given level of confidence, our method is not only faster in many cases but also requires less information about the system, namely, only the minimum transition probability that occurs in the Markov chain. In addition, our method can be generalised to unbounded quantitative properties such as mean-payoff bounds.