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The verification methodology studied in this paper stems from investigations on respectively deduction-based model checking and semantics of concurrency. Specifically, we consider imperative programs with CSP-like communication and use a categorical semantics as foundation to extract from a program a control graph labeled by transition predicates. This logical content acts as system description for a deduction-based model checker of LTL properties. We illustrate the methodology with a concrete realization in form of the Mc5 verification tool written in Ocaml and using the theorem prover PVS as back-end.