Validating B, Z and TLA + Using ProB and Kodkod

We present the integration of the Kodkod high-level interface to SAT-solvers into the kernel of ProB. As such, predicates from B, Event-B, Z and TLA + can be solved using a mixture of SAT-solving and ProB’s own constraint-solving capabilities developed using constraint logic programming: the first-order parts which can be dealt with by Kodkod and the remaining parts solved by the existing ProB kernel. We also present an empirical evaluation and analyze the respective merits of SAT-solving and classical constraint solving. We also compare to using SMT solvers via recently available translators for Event-B.

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