Reachability Modulo Theories

Program verifiers that attempt to verify programs automatically pose the verification problem as the decision problem: "Does there exist a proof that establishes the absence of errors?" In this paper, we argue that program verification should instead be posed as the following decision problem: "Does there exist an execution that establishes the presence of an error?" We formalize the latter problem as Reachability Modulo Theories (RMT) using an imperative programming language parameterized by a multi-sorted first-order signature. We present complexity results, algorithms, and the Corral solver for the RMT problem. We present our experience using Corral on problems from a variety of application domains.

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In  7th International workshop on Reachability Problems (Invited Paper)

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