TACAS '95 Proceedings of the First International Workshop on Tools and Algorithms for Construction and Analysis of Systems
Job-Shop Scheduling Using Timed Automata
CAV '01 Proceedings of the 13th International Conference on Computer Aided Verification
Synthesis of timing parameters satisfying safety properties
RP'11 Proceedings of the 5th international conference on Reachability problems
On interleaving in timed automata
CONCUR'06 Proceedings of the 17th international conference on Concurrency Theory
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Keeping the state space small is essential when verifying real-time systems using Timed Automata (TA). In the model-checker Uppaal, the merging operation has been used extensively in order to reduce the number of states. Actually, Uppaal's merging technique applies within the more general setting of Parametric Timed Automata (PTA). The Inverse Method (IM) for a PTA A is a procedure that synthesizes a zone around a given point π0 (parameter valuation) over which A is guaranteed to behave in an equivalent time-abstract manner. We show that the integration of merging into IM leads to the synthesis of larger zones around π0. It also often improves the performance of IM, both in terms of computational space and time, as shown by our experimental results.