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Description:
We introduce a general verification framework based on program specialization to prove properties of the runtime behaviour of imperative programs. Given a program P written in a programming language L and a property phi in a logic M, we can verify that phi holds for P by: (i) writing an interpreter I for L and a semantics S for M in a suitable metalanguage, (ii) specializing I and S with respect to P and phi, and (iii) analysing the specialized program by performing a further specialization. We have instantiated our framework to verify safety properties of a simple imperative language, called SIMP, extended with a nondeterministic choice operator. The method is fully automatic and it has been implemented using the MAP transformation system.