Abstract
Stochastic Boolean satisfiability (SSAT) is a formalism allowing decision-making for optimization under quantitative constraints. Although SSAT solvers are under active development, existing solvers do not provide Skolem-function witnesses, which are crucial for practical applications. In this work, we develop a new witness-generating SSAT solver, SharpSSAT, which integrates techniques, including component caching, clause learning, and pure literal detection. It can generate a set of Skolem functions witnessing the attained satisfying probability of a given SSAT formula. We also equip the solver ClauSSat with witness generation capability for comparison. Experimental results show that SharpSSAT outperforms current state-of-the-art solvers and can effectively generate compact Skolem-function witnesses. The new witness-generating solver may broaden the applicability of SSAT to practical applications.
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