# On Reachability for Unidirectional Channel Systems Extended with Regular Tests

@article{Janar2015OnRF, title={On Reachability for Unidirectional Channel Systems Extended with Regular Tests}, author={Petr Jan{\vc}ar and Prateek Karandikar and Philippe Schnoebelen}, journal={Log. Methods Comput. Sci.}, year={2015}, volume={11} }

"Unidirectional channel systems" (Chambart & Schnoebelen, CONCUR 2008) are
finite-state systems where one-way communication from a Sender to a Receiver
goes via one reliable and one unreliable unbounded fifo channel. While
reachability is decidable for these systems, equipping them with the
possibility of testing regular properties on the contents of channels makes it
undecidable. Decidability is preserved when only emptiness and nonemptiness
tests are considered: the proof relies on an…

## One Citation

Subwords : automata, embedding problems, and verification

- Computer Science, Mathematics
- 2015

The Post Embedding Problem (PEP) is an algebraic abstraction of the reachability problem on LCS, with the same complexity, and is the champion for a "master" problem for the class F_{omega^omega}.

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