A Reduction Theorem for the Verification of Round-Based Distributed Algorithms

  • Authors:
  • Mouna Chaouch-Saad;Bernadette Charron-Bost;Stephan Merz

  • Affiliations:
  • Faculté des Sciences, Tunis, Tunisia;CNRS & LIX, Palaiseau, France;INRIA Nancy & LORIA, Nancy, France

  • Venue:
  • RP '09 Proceedings of the 3rd International Workshop on Reachability Problems
  • Year:
  • 2009

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Abstract

We consider the verification of algorithms expressed in the Heard-Of Model, a round-based computational model for fault-tolerant distributed computing. Rounds in this model are communication-closed, and we show that every execution recording individual events corresponds to a coarser-grained execution based on global rounds such that the local views of all processes are identical in the two executions. This result helps us to substantially mitigate state-space explosion and verify Consensus algorithms using standard model checking techniques.