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B-Cubing: New Possibilities for Efficient SAT-Solving

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3 Author(s)
Babic, Domagoj ; Dept. of Comput. Sci., British Columbia Univ., Vancouver, BC ; Bingham, J. ; Hu, A.J.

SAT (Boolean satisfiability) has become the primary Boolean reasoning engine for many EDA (electronic design automation) applications, so the efficiency of SAT-solving is of great practical importance. B-cubing is our extension and generalization of Goldberg et al.'s supercubing, an approach to pruning in SAT-solving completely different from the standard approach used in leading solvers. We have built a B-cubing-based solver that is competitive with, and often outperforms, leading conventional solvers (e.g., ZChaff II) on a wide range of EDA benchmarks. However, B-cubing is hard to understand and even the correctness of the algorithm is not obvious. This paper presents the theoretical basis for B-cubing, proves our approach correct, details our implementation and experimental results, and maps out other correct possibilities for further improving SAT-solving

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Computers, IEEE Transactions on  (Volume:55 ,  Issue: 11 )