Long-run order-independence of vector-based transition systems ABSTRACT:Semantics of many specification languages, particularly those used in the domain of hardware, is described in terms of vector-based transition systems. In such transition systems, each macro-step transition is labeled by a vector of inputs in which several inputs may change simultaneously. Each macro-step can thus be decomposed into a number of micro-steps, considering one input change at a time. This is akin to an interleaving semantics, where a concurrent step is represented by an interleaving of its constituting components. In this paper, the authors present abstract criteria on vector-based transition systems, which guarantee the next state computation to be independent of the execution order of micro-steps. If these abstract criteria are satisfied, then state-space generation or exploration algorithms only need to consider one representative among all possible permutations of micro-steps. For most practical applications only the system's long-run behaviour is of relevance and the transient start-up phase can be ignored. Hence, the authors customise their generic techniques to focus on the long-run behaviour and identify orders of interleaving input changes that may behave differently during start-up, but compute the same next states in the long-run behaviour. Applicability of the developed abstract criteria is demonstrated for specifications of transistor netlists. Did you like this research project? To get this research project Guidelines, Training and Code... Click Here facebook twitter google+ linkedin stumble pinterest Signal transition graph decomposition: internal communication for speed independent circuit implementation Efficient model checking of PSL safety properties