Satometer:: how much have we searched?

  • Authors:
  • Fadi A. Aloul;Brian D. Sierawski;Karem A. Sakallah

  • Affiliations:
  • University of Michigan;University of Michigan;University of Michigan

  • Venue:
  • Proceedings of the 39th annual Design Automation Conference
  • Year:
  • 2002

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Abstract

We introduce Satometer, a tool that can be used to estimate the percentage of the search space actually explored by a backtrack SAT solver. Satometer calculates a normalized minterm count for those portions of the search space identified by conflicts. The computation is carried out using a zero-suppressed BDD data structure and can have adjustable accuracy. The data provided by Satometer can help diagnose the performance of SAT solvers and can shed light on the nature of a SAT instance.