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A coalgebraic view on decorated traces

Published online by Cambridge University Press:  03 December 2014

F. BONCHI
Affiliation:
ENS Lyon, Université de Lyon, LIP (UMR 5668 CNRS ENS Lyon UCBL INRIA), Lyon, France
M. BONSANGUE
Affiliation:
LIACS - Leiden University, Leiden, The Netherlands Centrum voor Wiskunde en Informatica, Amsterdam, The Netherlands
G. CALTAIS
Affiliation:
Centrum voor Wiskunde en Informatica, Amsterdam, The Netherlands School of Computer Science - Reykjavik University, Reykjavik, Iceland
J. RUTTEN
Affiliation:
Centrum voor Wiskunde en Informatica, Amsterdam, The Netherlands Radboud University, Nijmegen, The Netherlands
A. SILVA
Affiliation:
Centrum voor Wiskunde en Informatica, Amsterdam, The Netherlands Radboud University, Nijmegen, The Netherlands HASLab/INESC TEC, Universidade do Minho, Braga, Portugal
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Abstract

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In the concurrency theory, various semantic equivalences on transition systems are based on traces decorated with some additional observations, generally referred to as decorated traces. Using the generalized powerset construction, recently introduced by a subset of the authors (Silva et al.2010 FSTTCS. LIPIcs8 272–283), we give a coalgebraic presentation of decorated trace semantics. The latter include ready, failure, (complete) trace, possible futures, ready trace and failure trace semantics for labelled transition systems, and ready, (maximal) failure and (maximal) trace semantics for generative probabilistic systems. This yields a uniform notion of minimal representatives for the various decorated trace equivalences, in terms of final Moore automata. As a consequence, proofs of decorated trace equivalence can be given by coinduction, using different types of (Moore-) bisimulation (up-to context).

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Copyright © Cambridge University Press 2014