Stochastic parity games on lossy channel systems

  • Authors:
  • Parosh Aziz Abdulla;Lorenzo Clemente;Richard Mayr;Sven Sandberg

  • Affiliations:
  • Uppsala University, Sweden;LaBRI, University of Bordeaux I, France;University of Edinburgh, UK;Uppsala University, Sweden

  • Venue:
  • QEST'13 Proceedings of the 10th international conference on Quantitative Evaluation of Systems
  • Year:
  • 2013

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Abstract

We give an algorithm for solving stochastic parity games with almost-sure winning conditions on lossy channel systems, for the case where the players are restricted to finite-memory strategies. First, we describe a general framework, where we consider the class of $2\frac{1}{2}$-player games with almost-sure parity winning conditions on possibly infinite game graphs, assuming that the game contains a finite attractor. An attractor is a set of states (not necessarily absorbing) that is almost surely re-visited regardless of the players' decisions. We present a scheme that characterizes the set of winning states for each player. Then, we instantiate this scheme to obtain an algorithm for stochastic game lossy channel systems.