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Conditional transition systems with upgrades

Beohar, H; Koenig, B; Kuepper, S; Silva, A; (2020) Conditional transition systems with upgrades. Science of Computer Programming , 186 , Article 102320. 10.1016/j.scico.2019.102320. Green open access

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Abstract

We introduce a variant of transition systems, where activation of transitions depends on conditions of the environment and upgrades during runtime potentially create additional transitions. Using a cornerstone result in lattice theory, we show that such transition systems can be modelled in two ways: as conditional transition systems (CTS) with a partial order on conditions, or as lattice transition systems (LaTS), where transitions are labelled with the elements from a distributive lattice. We define equivalent notions of bisimilarity for both variants and characterise them via a bisimulation game. We explain how conditional transition systems are related to featured transition systems for the modelling of software product lines. Furthermore, we show how to compute bisimilarity symbolically via BDDs by defining an operation on BDDs that approximates an element of a Boolean algebra into a lattice. We have implemented our procedure and provide runtime results. This is an extended version of the TASE 2017 paper [1], including all proofs, additional examples, an extension of the formalism to account for deactivation of updates and detailed runtime results.

Type: Article
Title: Conditional transition systems with upgrades
Location: Sophia Antipolis, FRANCE
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.scico.2019.102320
Publisher version: https://doi.org/10.1016/j.scico.2019.102320
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Conditional transition systems, Software product lines, BDDs, Features, Bisimulation
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
URI: https://discovery.ucl.ac.uk/id/eprint/10117570
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