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Tuesday 01 June 2010, 13:00-14:00
Validating QBF Invalidity in HOL4
- đ¤ Speaker: Tjark Weber (University of Cambridge)
- đ Date & Time: Tuesday 01 June 2010, 13:00 - 14:00
- đ Venue: Computer Laboratory, William Gates Building, Room SS03
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Thomas Tuerk
Abstract
The Quantified Boolean Formulae (QBF) solver Squolem can generate certificates of invalidity, based on Q-resolution. I present independent checking of these certificates in the HOL4 theorem prover. This enables HOL4 users to benefit from Squolem’s automation for QBF problems, and provides high correctness assurances for Squolem’s results. Detailed performance data shows that LCF -style certificate checking is feasible even for large QBF instances. The work prompted improvements to HOL4 ’s inference kernel.
Series This talk is part of the Computer Laboratory Automated Reasoning Group Lunches series.
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