Schloss Dagstuhl - Leibniz-Zentrum für Informatik GmbH Schloss Dagstuhl - Leibniz-Zentrum für Informatik GmbH scholarly article en de Boer, Frank S.; Johnsen, Einar Broch; Schlatte, Rudolf; Tapia Tarifa, Silvia Lizeth; Tveito, Lars https://www.dagstuhl.de/oasics License: Creative Commons Attribution 3.0 Unported license (CC-BY 3.0)
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URN: urn:nbn:de:0030-drops-132322
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Inseguendo Fagiani Selvatici: Partial Order Reduction for Guarded Command Languages

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Abstract

This paper presents a method for testing whether objects in actor languages and active object languages exhibit locally deterministic behavior. We investigate such a method for a class of guarded command programs, abstracting from object-oriented features like method calls but focusing on cooperative scheduling of dynamically spawned processes executing in parallel. The proposed method can answer questions such as whether all permutations of an execution trace are equivalent, by generating candidate traces for testing which may lead to different final states. To prune the set of candidate traces, we employ partial order reduction. To further reduce the set, we introduce an analysis technique to decide whether a generated trace is schedulable. Schedulability cannot be decided for guarded commands using standard dependence and interference relations because guard enabledness is non-monotonic. To solve this problem, we use concolic execution to produce linearized symbolic traces of the executed program, which allows a weakest precondition computation to decide on the satisfiability of guards.

BibTeX - Entry

@InProceedings{deboer_et_al:OASIcs:2020:13232,
  author =	{Frank S. de Boer and Einar Broch Johnsen and Rudolf Schlatte and Silvia Lizeth Tapia Tarifa and Lars Tveito},
  title =	{{Inseguendo Fagiani Selvatici: Partial Order Reduction for Guarded Command Languages}},
  booktitle =	{Recent Developments in the Design and Implementation of Programming Languages},
  pages =	{10:1--10:18},
  series =	{OpenAccess Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-171-9},
  ISSN =	{2190-6807},
  year =	{2020},
  volume =	{86},
  editor =	{Frank S. de Boer and Jacopo Mauro},
  publisher =	{Schloss Dagstuhl--Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/opus/volltexte/2020/13232},
  URN =		{urn:nbn:de:0030-drops-132322},
  doi =		{10.4230/OASIcs.Gabbrielli.10},
  annote =	{Keywords: Testing, Symbolic Traces, Guarded Commands, Partial Order Reduction}
}

Keywords: Testing, Symbolic Traces, Guarded Commands, Partial Order Reduction
Seminar: Recent Developments in the Design and Implementation of Programming Languages
Issue date: 2020
Date of publication: 27.11.2020


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