A new heuristic for bad cycle detection using BDDs

  • R. H. Hardin
  • R. P. Kurshan
  • S. K. Shukla
  • M. Y. Vardi
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1254)


We describe a new heuristic for detecting bad cycles (reachable cycles that are not confined within one or another designated sets of model states), a fundamental operation for model-checking algorithms. It is a variation on a standard implementation of the Emerson-Lei algorithm, which our experimental data suggests can result in a significant speed-up for verification runs that pass. We conclude that this heuristic can be used to advantage on “mature” designs for which the anticipated result of the verification is pass.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • R. H. Hardin
    • 1
  • R. P. Kurshan
    • 1
  • S. K. Shukla
    • 2
  • M. Y. Vardi
    • 3
  1. 1.Bell LabsMurray Hill
  2. 2.Computer Science DepartmentState University of New York at AlbanyNY
  3. 3.Department of Computer ScienceRice UniversityHouston

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