Abstract
The DRAT-trim tool is a satisfiability proof checker based on the new DRAT proof format. Unlike its predecessor, DRUP-trim, all presently known SAT solving and preprocessing techniques can be validated using DRAT-trim. Checking time of a proof is comparable to the running time of the proof-producing solver. Memory usage is also similar to solving memory consumption, which overcomes a major hurdle of resolution-based proof checkers. The DRAT-trim tool can emit trimmed formulas, optimized proofs, and new TraceCheck + dependency graphs. We describe the output that is produced, what optimizations have been made to check RAT clauses, and potential applications of the tool.
The authors are supported by DARPA contract number N66001-10-2-4087 and by the National Science Foundation under Grant No. CCF-1153558.
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Wetzler, N., Heule, M.J.H., Hunt, W.A. (2014). DRAT-trim: Efficient Checking and Trimming Using Expressive Clausal Proofs. In: Sinz, C., Egly, U. (eds) Theory and Applications of Satisfiability Testing – SAT 2014. SAT 2014. Lecture Notes in Computer Science, vol 8561. Springer, Cham. https://doi.org/10.1007/978-3-319-09284-3_31
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DOI: https://doi.org/10.1007/978-3-319-09284-3_31
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