Counterexamples with loops for predicate abstraction

  • Authors:
  • Daniel Kroening;Georg Weissenbacher

  • Affiliations:
  • Computer Systems Institute, ETH Zurich, Zurich, Switzerland;Computer Systems Institute, ETH Zurich, Zurich, Switzerland

  • Venue:
  • CAV'06 Proceedings of the 18th international conference on Computer Aided Verification
  • Year:
  • 2006

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Abstract

Predicate abstraction is a major abstraction technique for the verification of software. Data is abstracted by means of Boolean variables, which keep track of predicates over the data. In many cases, the technique suffers from the fact that it requires at least one predicate for each iteration of a loop construct in the program. We propose to extract looping counterexamples from the abstract model, and to parameterize the simulation instance in the number of loop iterations.