Publication details

PAC Statistical Model Checking for Markov Decision Processes and Stochastic Games

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Year of publication 2019
Type Article in Proceedings
Conference Computer Aided Verification (CAV 2019)
MU Faculty or unit

Faculty of Informatics

Keywords PAC; Statistical Model Checking; Markov Decision Processes; Stochastic Games
Description Statistical model checking (SMC) is a technique for analysis of probabilistic systems that may be (partially) unknown. We present an SMC algorithm for (unbounded) reachability yielding probably approximately correct (PAC) guarantees on the results. We consider both the setting (i) with no knowledge of the transition function (with the only quantity required a bound on the minimum transition probability) and (ii) with knowledge of the topology of the underlying graph. On the one hand, it is the first algorithm for stochastic games. On the other hand, it is the first practical algorithm even for Markov decision processes. Compared to previous approaches where PAC guarantees require running times longer than the age of universe even for systems with a handful of states, our algorithm often yields reasonably precise results within minutes, not requiring the knowledge of mixing time.
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