TESL: A Model with Metric Time for Modeling and Simulation

Real-time and distributed systems are increasingly finding their way into critical embedded systems. On one side, computations need to be achieved within specific time constraints. On the other side, computations may be spread among various units which are not necessarily sharing a global clock. Our study is focused on a specification language - named TESL - used for coordinating concurrent models with timed constraints. We explore various questions related to time when modeling systems, and aim at showing that TESL can be introduced as a reasonable balance of expressiveness and decidability to tackle issues in complex systems. This paper introduces (1) an overview of the TESL language and its main properties (polychrony, stutter-invariance, coinduction for simulation), (2) extensions to the language and their applications

Corinne, a Tool for Choreography Automata

International audienceChoreography automata are a model of choreographies envisaging high-level views of the behaviour of communicating systems as finite-state automata. The behaviour of each participant of a choreography can be obtained via a projection operation from a choreography automaton. The system of participants obtained by projection is well-behaved if the choreography automaton satisfies some well-formedness conditions. We present Corinne, a tool allowing one to render, compute projections of and compose choreography automata, as well as to check well-formedness conditions