Efficient Proof Engines for Bounded Model Checking of Hybrid Systems

  • Authors:
  • Martin Fränzle;Christian Herde

  • Affiliations:
  • Informatics and Mathematical Modelling, The Technical University of Denmark, Richard Petersens Plads, Bldg. 322, DK-2800 Kgs. Lyngby, Denmark;Department of Computing Science, Carl-von-Ossietzky Universität Oldenburg, P.O. Box 2503, D-26111 Oldenburg, Germany

  • Venue:
  • Electronic Notes in Theoretical Computer Science (ENTCS)
  • Year:
  • 2005

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Abstract

In this paper we present HySat, a new bounded model checker for linear hybrid systems, incorporating a tight integration of a DPLL-based pseudo-Boolean SAT solver and a linear programming routine as core engine. In contrast to related tools like MathSAT, ICS, or CVC, our tool exploits all of the various optimizations that arise naturally in the bounded model checking context, e.g. isomorphic replication of learned conflict clauses or tailored decision strategies, and extends them to the hybrid domain. We demonstrate that those optimizations are crucial to the performance of the tool.