Minimal counterexamples for linear-time probabilistic verification
Minimal counterexamples for linear-time probabilistic verification
复制标题
线性时间概率验证的最小反例
DOI:
10.1016/j.tcs.2014.06.020
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Bernd Becker
中科院分区:
文献类型:
--
作者:
Ralf Wimmer;Nils Jansen;Erika Ábráhm;Joost-Pieter Katoen;Bernd Becker
Counterexamples for property violations have a number of important applications like supporting the debugging of erroneous systems and verifying large systems via counterexample-guided abstraction refinement. In this paper, we propose the usage of minimal critical subsystems of discrete-time Markov chains and Markov decision processes as counterexamples for violatedω-regular properties. Minimality can thereby be defined in terms of the number of states or transitions. This problem is known to be NP-complete for Markov decision processes. We show how to compute such subsystems using mixed integer linear programming and evaluate the practical applicability in a number of experiments. They show that our method yields substantially smaller counterexample than using existing techniques.