Finding inductive invariants is a key issue in many domains such as program verification, model based testing, etc. However, few approaches help the designer in the task of writing a correct and meaningful model, where correction is used for consistency of the formal specification w.r.t. its inner invariant properties. Meaningfulness is obtained by providing many explicit views of the model, like animation, counter-example extraction, and so on. We propose to ease the task of writing a correct and meaningful formal specification by combining a panel of provers, a set-theoretical constraint solver and some model-checkers.
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