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A new partial order reduction method for timed automaton model checking is presented in this paper. This method avoids exhaustive state-space exploration by enumerating only part of enabled transitions at some symbolic states. This paper gives some sufficient conditions on which partial enumeration does not change the reach ability analysis result. Efficient algorithms are presented to check these...
Different formal methods have presented plenty of formal models for system specification and proof. Hence the problem of bridging these formal models rises. MDE is a new paradigm in software engineering, which implements software by (meta-)modeling and model transforming. In this paper, we provide a MDE based approach for bridging heterogeneous formal models: Firstly, the heterogeneous formal models...
Most of the timed automaton model checking algorithms explore state spaces by enumeration of time zones. The data structure called Difference Bound Matrix (DBM) is widely adopted to represent time zones because of its efficiency and simplicity. In this paper, we first present a quadratic-time algorithm to compute the canonical form of the conjunction of a canonical DBM and a time guard or a location...
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