A1 Journal article (refereed)
A Detailed Account of The Inconsistent Labelling Problem of Stutter-Preserving Partial-Order Reduction (2021)

Neele, T., Valmari, A., & Willemse, T. A. C. (2021). A Detailed Account of The Inconsistent Labelling Problem of Stutter-Preserving Partial-Order Reduction. Logical Methods in Computer Science, 17(3), Article 8. https://doi.org/10.46298/lmcs-17(3:8)2021

JYU authors or editors

Publication details

All authors or editorsNeele, Thomas; Valmari, Antti; Willemse, Tim A. C.

Journal or seriesLogical Methods in Computer Science


Publication year2021

Publication date27/07/2021


Issue number3

Article number8

PublisherLogical Methods in Computer Science e.V.

Publication countryGermany

Publication languageEnglish


Publication open accessOpenly available

Publication channel open accessOpen Access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/77684


One of the most popular state-space reduction techniques for model checking is partial-order reduction (POR). Of the many different POR implementations, stubborn sets are a very versatile variant and have thus seen many different applications over the past 32 years. One of the early stubborn sets works shows how the basic conditions for reduction can be augmented to preserve stutter-trace equivalence, making stubborn sets suitable for model checking of linear-time properties. In this paper, we identify a flaw in the reasoning and show with a counter-example that stutter-trace equivalence is not necessarily preserved. We propose a stronger reduction condition and provide extensive new correctness proofs to ensure the issue is resolved. Furthermore, we analyse in which formalisms the problem may occur. The impact on practical implementations is limited, since they all compute a correct approximation of the theory.

Keywordsdata processingalgorithmics

Free keywordspartial-order reduction; stutter equivalence; LTL; stubborn sets

Contributing organizations

Ministry reportingYes

Reporting Year2021

JUFO rating1

Last updated on 2024-22-04 at 22:10