KIND-INV generates in an automatic fashion Boolean and Integer type invariants for Lustre programs.

The tool produces quantifier-free k-inductive invariants for a given Lustre program. KIND-INV relies on SMT solvers and capitalizes on their ability to quickly generate counter-models of non-invariant conjectures.

We have carried extensive experiments with a large set of Lustre programs and associated safety properties. The invariants generated with KIND-INV considerably increase the number of provable safety properties; moreover, they do not slow down the processing of properties already provable without invariants.

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