Timed Petri Nets and BQOs

  • Authors:
  • Parosh Aziz Abdulla;Aletta Nylén

  • Affiliations:
  • -;-

  • Venue:
  • ICATPN '01 Proceedings of the 22nd International Conference on Application and Theory of Petri Nets
  • Year:
  • 2001

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Abstract

We consider (unbounded) Timed Petri Nets (TPNs) where each token is equipped with a real-valued clock representing the "age" of the token. Each arc in the net is provided with a subinterval of the natural numbers, restricting the ages of the tokens travelling the arc. We apply a methodology developed in [AN00], based on the theory of better quasi orderings (BQOs), to derive an efficient constraint system for automatic verification of safety properties for TPNs. We have implemented a prototype based on our method and applied it for verification of a parametrized version of Fischer's protocol.