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Documents authored by Mertens, Hannah

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DOI: 10.4230/LIPIcs.CONCUR.2025.31
Compositional Reasoning for Parametric Probabilistic Automata

Authors: Hannah Mertens, Tim Quatmann, and Joost-Pieter Katoen

Published in: LIPIcs, Volume 348, 36th International Conference on Concurrency Theory (CONCUR 2025)

Abstract
We establish an assume-guarantee (AG) framework for compositional reasoning about multi-objective queries in parametric probabilistic automata (pPA) - an extension to probabilistic automata (PA), where transition probabilities are functions over a finite set of parameters. We lift an existing framework for PA to the pPA setting, incorporating asymmetric, circular, and interleaving proof rules. Our approach enables the verification of a broad spectrum of multi-objective queries for pPA, encompassing probabilistic properties and (parametric) expected total rewards. Additionally, we introduce a rule for reasoning about monotonicity in composed pPAs.
Cite as

Hannah Mertens, Tim Quatmann, and Joost-Pieter Katoen. Compositional Reasoning for Parametric Probabilistic Automata. In 36th International Conference on Concurrency Theory (CONCUR 2025). Leibniz International Proceedings in Informatics (LIPIcs), Volume 348, pp. 31:1-31:20, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2025)

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@InProceedings{mertens_et_al:LIPIcs.CONCUR.2025.31,
  author =	{Mertens, Hannah and Quatmann, Tim and Katoen, Joost-Pieter},
  title =	{{Compositional Reasoning for Parametric Probabilistic Automata}},
  booktitle =	{36th International Conference on Concurrency Theory (CONCUR 2025)},
  pages =	{31:1--31:20},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-389-8},
  ISSN =	{1868-8969},
  year =	{2025},
  volume =	{348},
  editor =	{Bouyer, Patricia and van de Pol, Jaco},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CONCUR.2025.31},
  URN =		{urn:nbn:de:0030-drops-239810},
  doi =		{10.4230/LIPIcs.CONCUR.2025.31},
  annote =	{Keywords: Verification, Probabilistic systems, Assume-guarantee reasoning, Parametric Probabilistic Automata, Parameter synthesis}
}
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