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Lecture Notes in Computer Science
A quantified Boolean formula (QBF) is a propositional formula extended with universal and existential quantification over propositions. There are two methodologies in CEGAR based QBF solving techniques, one that is based on a refinement loop that builds partial expansions and a more recent one that is based on the communication of satisfied clauses. Despite their algorithmic similarity, their performance characteristics in experimental evaluations are very different and in many casesdoi:10.1007/978-3-319-63390-9_25 fatcat:nuabyzxfp5dltpgsltvocztwmu