Bounded Model Checking for the Existential Fragment of TCTL_{-G} and Diagonal Timed Automata

  • Authors:
  • Bożena Woźna;Andrzej Zbrzezny

  • Affiliations:
  • Institute of Mathematics and Computer Science, Jan Długosz University Al. Armii Krajowej 13/15, 42-200 Czȩstochowa, Poland. E-mail: {b.wozna,a.zbrzezny}@ajd.czest.pl;Institute of Mathematics and Computer Science, Jan Długosz University Al. Armii Krajowej 13/15, 42-200 Czȩstochowa, Poland. E-mail: {b.wozna,a.zbrzezny}@ajd.czest.pl

  • Venue:
  • Fundamenta Informaticae
  • Year:
  • 2007

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Abstract

Bounded Model Checking (BMC) is one of the well known SAT basedsymbolic model checking techniques. It consists in searching for acounterexample of a particular length, and generating apropositional formula that is satisfiable iff such a counterexampleexists. The BMC method is feasible for the various classes oftemporal logic; in particular it is feasible for TECTL (theexistential fragment of Time Computation Tree Logic) andDiagonal-free Timed Automata. The main contribution of the paper isto show that the concept of Bounded Model Checking can be extendedto deal with TECTL_{-G} properties of Diagonal Timed Automata. Wehave implemented our new BMC algorithm, and we present preliminaryexperimental results, which demonstrate the efficiency of themethod.