,
Tim Quatmann
,
Joost-Pieter Katoen
Creative Commons Attribution 4.0 International license
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.
@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}
}