Fast and flexible difference constraint propagation for DPLL(T)

  • Authors:
  • Scott Cotton;Oded Maler

  • Affiliations:
  • Verimag, Centre Équation, Gières, France;Verimag, Centre Équation, Gières, France

  • Venue:
  • SAT'06 Proceedings of the 9th international conference on Theory and Applications of Satisfiability Testing
  • Year:
  • 2006

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Abstract

In the context of DPLL(T), theory propagation is the process of dynamically selecting consequences of a conjunction of constraints from a given set of candidate constraints. We present improvements to a fast theory propagation procedure for difference constraints of the form x – y ≤c. These improvements are demonstrated experimentally.