,
Christel Baier
,
Nathalie Bertrand
,
Ocan Sankur
Creative Commons Attribution 4.0 International license
Quantified linear temporal logic (QLTL) is an ω-regular extension of LTL allowing quantification over propositional variables. We study the model checking problem of QLTL-formulas over Markov chains and Markov decision processes (MDPs) with respect to the number of quantifier alternations of formulas in prenex normal form. For formulas with k{-}1 quantifier alternations, we prove that all qualitative and quantitative model checking problems are k-EXPSPACE-complete over Markov chains and k{+}1-EXPTIME-complete over MDPs.
As an application of these results, we generalize vacuity checking for LTL specifications from the non-probabilistic to the probabilistic setting. We show how to check whether an LTL-formula is affected by a subformula, and also study inherent vacuity for probabilistic systems.
@InProceedings{piribauer_et_al:LIPIcs.CONCUR.2021.7,
author = {Piribauer, Jakob and Baier, Christel and Bertrand, Nathalie and Sankur, Ocan},
title = {{Quantified Linear Temporal Logic over Probabilistic Systems with an Application to Vacuity Checking}},
booktitle = {32nd International Conference on Concurrency Theory (CONCUR 2021)},
pages = {7:1--7:18},
series = {Leibniz International Proceedings in Informatics (LIPIcs)},
ISBN = {978-3-95977-203-7},
ISSN = {1868-8969},
year = {2021},
volume = {203},
editor = {Haddad, Serge and Varacca, Daniele},
publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
address = {Dagstuhl, Germany},
URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CONCUR.2021.7},
URN = {urn:nbn:de:0030-drops-143842},
doi = {10.4230/LIPIcs.CONCUR.2021.7},
annote = {Keywords: Quantified linear temporal logic, Markov chain, Markov decision process, vacuity}
}