Specification Decomposition for Reactive Synthesis (Full Version)
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Reactive synthesis is the task of automatically deriving an implementation from a specification. It is a promising technique for the development of verified programs and hardware. Despite recent advances, reactive synthesis is still not practical when the specified systems reach a certain bound in size and complexity. In this paper, we present a modular synthesis algorithm that decomposes the specification into smaller subspecifications. For them, independent synthesis tasks are performed, and the composition of the resulting implementations is guaranteed to satisfy the full specification. Our algorithm is a preprocessing technique that can be applied to a wide range of synthesis tools. We evaluate our approach with state-of-the-art synthesis tools on established benchmarks and obtain encouraging results: The overall runtime decreases significantly when synthesizing implementations modularly.
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