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Efficient Abstraction Refinement in Interpolation-Based Unbounded Model Checking

  • Bing Li
  • Fabio Somenzi
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3920)

Abstract

It has been pointed out by McMillan that modern satisfiability (SAT) solvers have the ability to perform on-the-fly model abstraction when examining it for the existence of paths satisfying certain conditions. The issue has therefore been raised of whether explicit abstraction refinement schemes still have a role to play in SAT-based model checking. Recent work by Gupta and Strichman has addressed this issue for bounded model checking (BMC), while in this paper we consider unbounded model checking based on interpolation. We show that for passing properties abstraction refinement leads to proofs that often require examination of shorter paths. On the other hand, there is significant overhead involved in computing efficient abstractions. We describe the techniques we have developed to minimize such overhead to the point that even for failing properties the abstraction refinement scheme remains competitive.

Keywords

Model Check Abstract Model Concrete Model Satisfying Assignment Symbolic Model Check 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Bing Li
    • 1
  • Fabio Somenzi
    • 1
  1. 1.University of Colorado at BoulderUSA

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