Correcting a Space-Efficient Simulation Algorithm

  • Rob van Glabbeek
  • Bas Ploeger
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5123)

Abstract

Although there are many efficient algorithms for calculating the simulation preorder on finite Kripke structures, only two have been proposed of which the space complexity is of the same order as the size of the output of the algorithm. Of these, the one with the best time complexity exploits the representation of the simulation problem as a generalised coarsest partition problem. It is based on a fixed-point operator for obtaining a generalised coarsest partition as the limit of a sequence of partition pairs. We show that this fixed-point theory is flawed, and that the algorithm is incorrect. Although we do not see how the fixed-point operator can be repaired, we correct the algorithm without affecting its space and time complexity.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Rob van Glabbeek
    • 1
    • 2
  • Bas Ploeger
    • 3
  1. 1.National ICT AustraliaSydneyAustralia
  2. 2.School of Computer Science and EngineeringThe University of New South WalesSydneyAustralia
  3. 3.Design and Analysis of Systems GroupEindhoven University of TechnologyEindhovenThe Netherlands

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