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arXiv · 1603.03252

Extension of PRISM by Synthesis of Optimal Timeouts in Fixed-Delay CTMC

Ľuboš Korenčiak·Vojtěch Řehák·Adrian Farmadin
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Abstract

We present a practically appealing extension of the probabilistic model checker PRISM rendering it to handle fixed-delay continuous-time Markov chains (fdCTMCs) with rewards, the equivalent formalism to the deterministic and stochastic Petri nets (DSPNs). fdCTMCs allow transitions with fixed-delays (or timeouts) on top of the traditional transitions with exponential rates. Our extension supports an evaluation of expected reward until reaching a given set of target states. The main contribution is that, considering the fixed-delays as parameters, we implemented a synthesis algorithm that computes the epsilon-optimal values of the fixed-delays minimizing the expected reward. We provide a performance evaluation of the synthesis on practical examples.

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Ľuboš Korenčiak, Vojtěch Řehák, Adrian Farmadin. 2016-03-10. Extension of PRISM by Synthesis of Optimal Timeouts in Fixed-Delay CTMC. https://arxiv.org/abs/1603.03252

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