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Parameterized Complexity of Safety of Threshold Automata

Author A. R. Balasubramanian

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Author Details

A. R. Balasubramanian
  • Technische Universität München, Germany

Funding

This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme under grant agreement No 787367 (PaVeS).

Acknowledgements

I would like to thank Prof. Javier Esparza for useful discussions regarding the paper and Christoph Welzel and Margarete Richter for their encouragement and support. I would also like to thank the anonymous reviewers whose comments greatly improved the presentation of the paper.

Cite As Get BibTex

A. R. Balasubramanian. Parameterized Complexity of Safety of Threshold Automata. 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. 37:1-37:15, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020) https://doi.org/10.4230/LIPIcs.FSTTCS.2020.37

Abstract

Threshold automata are a formalism for modeling fault-tolerant distributed algorithms. In this paper, we study the parameterized complexity of reachability of threshold automata. As a first result, we show that the problem becomes W[1]-hard even when parameterized by parameters which are quite small in practice. We then consider two restricted cases which arise in practice and provide fixed-parameter tractable algorithms for both these cases. Finally, we report on experimental results conducted on some protocols taken from the literature.

Subject Classification

ACM Subject Classification
  • Theory of computation → Distributed computing models
  • Theory of computation → Logic and verification
Keywords
  • Threshold automata
  • distributed algorithms
  • parameterized complexity

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