Cones and foci: A mechanical framework for protocol verification

  • Authors:
  • Wan Fokkink;Jun Pang;Jaco De Pol

  • Affiliations:
  • Aff1 Aff2;INRIA Futurs and LIX, École Polytechnique, Palaiseau Cedex, France F-91128;Aff1 Aff4

  • Venue:
  • Formal Methods in System Design
  • Year:
  • 2006

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Abstract

We define a cones and foci proof method, which rephrases the question whether two system specifications are branching bisimilar in terms of proof obligations on relations between data objects. Compared to the original cones and foci method from Groote and Springintveld, our method is more generally applicable, because it does not require a preprocessing step to eliminate 驴-loops. We prove soundness of our approach and present a set of rules to prove the reachability of focus points. Our method has been formalized and proved correct using PVS. Thus we have established a framework for mechanical protocol verification. We apply this framework to the Concurrent Alternating Bit Protocol.