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The automated inference of quantified invariants is considered one of the next challenges in software verification. The question of the right precision-efficiency tradeoff for the corresponding program analyses here boils down to the question of the right treatment of disjunction below and above the universal quantifier. In the closely related setting of shape analysis one uses the focus operator in order to adapt the treatment of disjunction (and thus the efficiency-precision tradeoff) to thedoi:10.1145/1706299.1706330 dblp:conf/popl/PodelskiW10 fatcat:h2s3vpjnenf3rdrmzq3cfos4vq