Abstract
We propose to exploit three-valued abstraction to stochastic systems in a compositional way. This combines the strengths of an aggressive state-based abstraction technique with compositional modeling. Applying this principle to interactive Markov chains yields abstract models that combine interval Markov chains and modal transition systems in a natural and orthogonal way. We prove the correctness of our technique for parallel and symmetric composition and show that it yields lower bounds for minimal and upper bounds for maximal timed reachability probabilities.
The research has been funded by the DFG Research Training Group 1298 (AlgoSyn), the NWO project QUPES (612.000.420) and the EU FP7 project Quasimodo.
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Katoen, JP., Klink, D., Neuhäußer, M.R. (2009). Compositional Abstraction for Stochastic Systems. In: Ouaknine, J., Vaandrager, F.W. (eds) Formal Modeling and Analysis of Timed Systems. FORMATS 2009. Lecture Notes in Computer Science, vol 5813. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-04368-0_16
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