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Synthesis is the automated construction of a system from its specification. In standard temporal-synthesis algorithms, it is assumed the system is constructed from scratch. This, of course, rarely happens in real life. In real life, almost every non-trivial system, either in hardware or in software, relies heavily on using libraries of reusable components. Furthermore, other contexts, such as web-service orchestration and choreography, can also be modeled as synthesis of a system from a library of components. In this work we describe and study the problem of compositional temporal synthesis, in which we synthesize systems from libraries of reusable components. We define two notions of composition: data-flow composition, which we show is undecidable, and control-flow composition, which we show is decidable. We then explore a variation of control-flow compositional synthesis, in which we construct reliable systems from libraries of unreliable components.
Date of Conference: 17-20 Sept. 2012