Explainable Reactive Synthesis

Baumeister, Tom and Finkbeiner, Bernd and Torfah, Hazem
(2020) Explainable Reactive Synthesis.
In: Automated Technology for Verification and Analysis.
Conference: ATVA International Symposium on Automated Technology for Verification and Analysis

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Abstract

Reactive synthesis transforms a specification of a reactive system, given in a temporal logic, into an implementation. The main advantage of synthesis is that it is automatic. The main disadvantage is that the implementation is usually very difficult to understand. In this paper, we present a new synthesis process that explains the synthesized implementation to the user. The process starts with a simple version of the specification and a corresponding simple implementation. Then, desired properties are added one by one, and the corresponding transformations, repairing the implementation, are explained in terms of counterexample traces. We present SAT-based algorithms for the synthesis of repairs and explanations. The algorithms are evaluated on a range of examples including benchmarks taken from the SYNTCOMP competition.

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