Tree-Like Counterexamples in Model Checking

  • Authors:
  • Edmund M. Clarke;Somesh Jha;Yuan Lu;Helmut Veith

  • Affiliations:
  • -;-;-;-

  • Venue:
  • LICS '02 Proceedings of the 17th Annual IEEE Symposium on Logic in Computer Science
  • Year:
  • 2002

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Abstract

Counterexamples for specification violations provide engineers with important debugging information. Although counterexamples are considered one of the main advantages of model checking, state-of the art model checkers are restricted to relatively simple counterexamples, and surprisingly little research effort has been put into counterexamples. In this paper, we introduce a new general framework for counterexamples. The paper has three main contributions: (i) We determine the general form of ACTL counterexamples. To this end, we investigate the notion of counterexample and show that a large class of temporal logics beyond ACTL admits counterexamples with a simple tree-like transition relation. We show that the existence of tree-like counterexamples is related to a universal fragment of extendedbranching time logic based on !