A Fixpoint Based Encoding for Bounded Model Checking

  • Authors:
  • Alan M. Frisch;Daniel Sheridan;Toby Walsh

  • Affiliations:
  • -;-;-

  • Venue:
  • FMCAD '02 Proceedings of the 4th International Conference on Formal Methods in Computer-Aided Design
  • Year:
  • 2002

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Abstract

The Bounded Model Checking approach to the LTL model checking problem, based on an encoding to Boolean satisfiability, has seen a growth in popularity due to recent improvements in SAT technology. The currently available encodings have certain shortcomings, particularly in the size of the clause forms that it generates. We address this by making use of the established correspondence between temporal logic expressions and the fixpoints of predicate transformers as used in symbolic model checking. We demonstrate how an encoding based on fixpoints can result in improved performance in the SAT checker.