Context induction: A proof principle for behavioural abstractions and algebraic implementations

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Abstract
An induction principle, called context induction, is presented which is appropriate for the verification of behavioural properties of abstract data types. The usefulness of the proof principle is documented by several applications: the verification of behavioural theorems over a behavioural specification, the verification of behavioural implementations and the verification of “forget-restrict-identify” implementations. In particular, it is shown that behavioural implementations and “forget-restrict-identify” implementations (under certain assumptions) can be characterised by the same condition on contexts, i.e. (under the given assumptions) both concepts are equivalent. This leads to the suggestion to use context induction as a uniform proof method for correctness proofs of algebraic implementations.

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