As Cheap as Possible: Efficient Cost-Optimal Reachability for Priced Timed Automata

  • Authors:
  • Kim Guldstrand Larsen;Gerd Behrmann;Ed Brinksma;Ansgar Fehnker;Thomas Hune;Paul Pettersson;Judi Romijn

  • Affiliations:
  • -;-;-;-;-;-;-

  • Venue:
  • CAV '01 Proceedings of the 13th International Conference on Computer Aided Verification
  • Year:
  • 2001

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Abstract

In this paper we present an algorithm for efficiently computing optimal cost of reaching a goal state in the model of Linearly Priced Timed Automata (LPTA). The central contribution of this paper is a priced extension of so-called zones. This, together with a notion of facets of a zone, allows the entire machinery for symbolic reachability for timed automata in terms of zones to be lifted to cost-optimal reachability using priced zones. We report on experiments with a cost-optimizing extension of Uppaal on a number of examples.