Path Compression in Timed Automata

  • Authors:
  • Agata Janowska;Wojciech Penczek

  • Affiliations:
  • Institute of Informatics, Warsaw University Banacha 2, 02-097 Warsaw, Poland. E-mail: janowska@mimuw.edu.pl;Institute of Computer Science, PAS Ordona 21, 01-237 Warsaw, Poland. E-mail: penczek@ipipan.waw.pl

  • Venue:
  • Fundamenta Informaticae - Special Issue on Concurrency Specification and Programming (CS&P)
  • Year:
  • 2007

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Abstract

The paper presents a method of abstraction for timed systems. Toextract an abstract model of a timed system we propose to usestatic analysis, namely a technique called path compression. Theidea behind the path compression consists in identifying a path (ora set of paths) on which a process executes a sequence oftransitions that do not influence a property being verified, andreplacing this path with a single transition. The method isproperty driven since it depends on a formula in question. Theabstraction is exact with respect to all the properties expressiblein the temporal logic CTL^*_{-X}.