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arXiv · 1702.03450

Revisiting Reachability in Timed Automata

Karin Quaas·Mahsa Shirmohammadi·James Worrell
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Abstract

We revisit a fundamental result in real-time verification, namely that the binary reachability relation between configurations of a given timed automaton is definable in linear arithmetic over the integers and reals. In this paper we give a new and simpler proof of this result, building on the well-known reachability analysis of timed automata involving difference bound matrices. Using this new proof, we give an exponential-space procedure for model checking the reachability fragment of the logic parametric TCTL. Finally we show that the latter problem is NEXPTIME-hard.

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Karin Quaas, Mahsa Shirmohammadi, James Worrell. 2017-02-11. Revisiting Reachability in Timed Automata. https://arxiv.org/abs/1702.03450

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