Verifying pCTL model checking

  • Authors:
  • Johannes Hölzl;Tobias Nipkow

  • Affiliations:
  • Institut für Informatik, Technische Universität München, Germany;Institut für Informatik, Technische Universität München, Germany

  • Venue:
  • TACAS'12 Proceedings of the 18th international conference on Tools and Algorithms for the Construction and Analysis of Systems
  • Year:
  • 2012

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Abstract

Probabilistic model checkers like PRISM check the satisfiability of probabilistic CTL (pCTL) formulas against discrete-time Markov chains. We prove soundness and completeness of their underlying algorithm in Isabelle/HOL. We define Markov chains given by a transition matrix and formalize the corresponding probability measure on sets of paths. The formalization of pCTL formulas includes unbounded cumulated rewards.