Understanding IC3

  • Authors:
  • Aaron R. Bradley

  • Affiliations:
  • ECEE Department, University of Colorado at Boulder

  • Venue:
  • SAT'12 Proceedings of the 15th international conference on Theory and Applications of Satisfiability Testing
  • Year:
  • 2012

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Abstract

The recently introduced model checking algorithm, IC3, has proved to be among the best SAT-based safety model checkers. Many implementations now exist. This paper provides the context from which IC3 was developed and explains how the originator of the algorithm understands it. Then it draws parallels between IC3 and the subsequently developed algorithms, FAIR and IICTL, which extend IC3's ideas to the analysis of ω-regular and CTL properties, respectively. Finally, it draws attention to certain challenges that these algorithms pose for the SAT and SMT community.