Reducing SAT to Max2SAT

Reducing SAT to Max2SAT

Carlos Ansótegui, Jordi Levy

Proceedings of the Thirtieth International Joint Conference on Artificial Intelligence
Main Track. Pages 1367-1373. https://doi.org/10.24963/ijcai.2021/189

In the literature, we find reductions from 3SAT to Max2SAT. These reductions are based on the usage of a gadget, i.e., a combinatorial structure that allows translating constraints of one problem to constraints of another. Unfortunately, the generation of these gadgets lacks an intuitive or efficient method. In this paper, we provide an efficient and constructive method for Reducing SAT to Max2SAT and show empirical results of how MaxSAT solvers are more efficient than SAT solvers solving the translation of hard formulas for Resolution.
Keywords:
Constraints and SAT: Constraint Optimization
Constraints and SAT: MaxSAT, MinSAT
Constraints and SAT: SAT: Solvers and Applications