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A Decision Procedure for (Co)datatypes in SMT Solvers

Abstract : We present a decision procedure that combines reasoning about datatypes and codatatypes. The dual of the acyclicity rule for datatypes is a uniqueness rule that identifies observationally equal codatatype values, including cyclic values. The procedure decides universal problems and is composable via the Nelson–Oppen method. It has been implemented in CVC4, a state-of-the-art SMT solver. An evaluation based on problems generated from formalizations developed with Isabelle demonstrates the potential of the procedure.
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Submitted on : Tuesday, November 21, 2017 - 10:36:25 AM
Last modification on : Monday, July 16, 2018 - 6:36:03 PM


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Andrew Reynolds, Jasmin Christian Blanchette. A Decision Procedure for (Co)datatypes in SMT Solvers. Journal of Automated Reasoning, Springer Verlag, 2017, 58 (3), pp.341 - 362. ⟨10.1007/s10817-016-9372-6⟩. ⟨hal-01643154⟩



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