SyTeCi: Automating Contextual Equivalence for Higher-Order Programs with References
We propose a framework to study contextual equivalence of programs written in a call-by-value functional language with local integer references. It reduces the problem of contextual equivalence to the problem of non-reachability in a transition system of memory configurations. This reduction is complete for recursion-free programs.
Restricting to programs that do not allocate references inside the body of functions, we encode this non-reachability problem as a constrained Horn clause that can then be checked for satisfiability automatically. Restricting furthermore to a language with finite data-types, we also get a new decidability result for contextual equivalence at any type.
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Research PapersLink to publication DOI Media Attached
|SyTeCi: Automating Contextual Equivalence for Higher-Order Programs with References|
Guilhem JaberLS2N, Université de NantesLink to publication DOI Media Attached