Formal Proofs of Tarjan's Algorithm in Why3, Coq, and Isabelle

10/29/2018

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by   Ran Chen, et al.

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Comparing provers on a formalization of the same problem is always a valuable exercise. In this paper, we present the formal proof of correctness of a non-trivial algorithm from graph theory that was carried out in three proof assistants: Why3, Coq, and Isabelle.