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We have developed a filter-based framework where several fundamentally different techniques can be combined to provide fully automated and efficient heuristic solutions to verification and possibly other NP-complete problems. Such an integrated methodology is far more robust and efficient than any single existing technique on a wide variety of circuits. Our methodology has been applied to verify the ISCAS 85 benchmark circuits and efficient verification results have been presented on a large set of industrial circuits which could not be verified using several published techniques and commercial verification tools available to us.
Date of Conference: 9-12 March 1999