NDLI: Under consideration for publication in Formal Aspects of Computing Verification of Clock Synchronization Algorithms: Experiments on a combination of deductive tools

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Under consideration for publication in Formal Aspects of Computing Verification of Clock Synchronization Algorithms: Experiments on a combination of deductive tools

Content Provider	CiteSeerX
Author	Barsotti, Damian Nieto, Leonor Prensa Tiu, Alwen
Abstract	Abstract. We report on an experiment in combining the theorem prover Isabelle with automatic first-order arithmetic provers to increase automation on the verification of distributed protocols. As a case study for the experiment we verify several averaging clock synchronization algorithms. We present a formalization of Schneider’s generalized clock synchronization protocol [Sch87] in Isabelle/HOL. Then, we verify that the convergence functions used in two clock synchronization algorithms, namely, the Interactive Convergence Algorithm (ICA) of Lamport and Melliar-Smith [LMS85] and the Fault-tolerant Midpoint algorithm of Lundelius-Lynch [LL84], satisfy Schneider’s general conditions for correctness. The proofs are completely formalized in Isabelle/HOL. We identify parts of the proofs which are not fully automatically proven by Isabelle built-in tactics and show that these proofs can be handled by automatic first-order provers with support for arithmetics.
File Format	PDF
Access Restriction	Open
Subject Keyword	Clock Synchronization Algorithm Formal Aspect Deductive Tool Computing Verification Isabelle Hol Isabelle Built-in Tactic Satisfy Schneider Interactive Convergence Algorithm Theorem Prover Isabelle Distributed Protocol General Condition Automatic First-order Arithmetic Provers Melliar-smith Lms85 Automatic First-order Provers Clock Synchronization Protocol Sch87 Fault-tolerant Midpoint Algorithm Lundelius-lynch Ll84 Convergence Function
Content Type	Text
Resource Type	Article

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