GRASP: A Search Algorithm for Propositional Satisfiability
IEEE Transactions on Computers
A machine program for theorem-proving
Communications of the ACM
Chaff: engineering an efficient SAT solver
Proceedings of the 38th annual Design Automation Conference
SATIRE: a new incremental satisfiability engine
Proceedings of the 38th annual Design Automation Conference
Efficient conflict driven learning in a boolean satisfiability solver
Proceedings of the 2001 IEEE/ACM international conference on Computer-aided design
Refining the SAT decision ordering for bounded model checking
Proceedings of the 41st annual Design Automation Conference
Automatic abstraction without counterexamples
TACAS'03 Proceedings of the 9th international conference on Tools and algorithms for the construction and analysis of systems
Using CSP look-back techniques to solve real-world SAT instances
AAAI'97/IAAI'97 Proceedings of the fourteenth national conference on artificial intelligence and ninth conference on Innovative applications of artificial intelligence
Using unsatisfiable cores to debug multiple design errors
Proceedings of the 18th ACM Great Lakes symposium on VLSI
Boosting minimal unsatisfiable core extraction
Proceedings of the 2010 Conference on Formal Methods in Computer-Aided Design
Faster extraction of high-level minimal unsatisfiable cores
SAT'11 Proceedings of the 14th international conference on Theory and application of satisfiability testing
| Hi-index | 0.00 |
The ability of modern SAT solvers to produce proofs of un-satisfiability for Boolean formulas has become a powerful tool for EDA applications. Proofs are generated from a resolve trace that captures information about the creation of all conflict clauses. Due to their sizes, resolve traces are kept in files. The sizes of these files makes the use of proofs of un-satisfiability impractical for industrial tools. Although only a small part of the resolve trace is eventually used, until now it was not known how to filter out unnecessary information. We propose a simple algorithm for on-the-fly resolve trace minimization in which we identify clauses that are guaranteed not to take part in the proof of unsatisfiability, and delete all of their associated information. This algorithm dramatically decreases the size of the resolve trace, to the point where it can be stored in the main memory. Our experiments reveal that the minimized trace is typically 3 to 6 times smaller. This makes the use of proofs of unsatisfiability and the computation of unsat cores more practical and will enable future applications to take advantage of it.