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Synthesizing Safe Coalition Strategies

Authors Nathalie Bertrand , Patricia Bouyer , Anirban Majumdar



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Author Details

Nathalie Bertrand
  • Université Rennes, Inria, CNRS, IRISA, Rennes, France
Patricia Bouyer
  • Université Paris-Saclay, ENS Paris-Saclay, CNRS, LSV, Gif-sur-Yvette, France
Anirban Majumdar
  • Université Rennes, Inria, CNRS, IRISA, Rennes, France
  • Université Paris-Saclay, ENS Paris-Saclay, CNRS, LSV, Gif-sur-Yvette, France

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Nathalie Bertrand, Patricia Bouyer, and Anirban Majumdar. Synthesizing Safe Coalition Strategies. In 40th IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 182, pp. 39:1-39:17, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2020)
https://doi.org/10.4230/LIPIcs.FSTTCS.2020.39

Abstract

Concurrent games with a fixed number of agents have been thoroughly studied, with various solution concepts and objectives for the agents. In this paper, we consider concurrent games with an arbitrary number of agents, and study the problem of synthesizing a coalition strategy to achieve a global safety objective. The problem is non-trivial since the agents do not know a priori how many they are when they start the game. We prove that the existence of a safe arbitrary-large coalition strategy for safety objectives is a PSPACE-hard problem that can be decided in exponential space.

Subject Classification

ACM Subject Classification
  • Theory of computation → Verification by model checking
Keywords
  • concurrent games
  • parameterized verification
  • strategy synthesis

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References

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