Formal Visual Modeling of Real-Time Systems in e-Motions: Two Case   Studies
  e-Motions is an Eclipse-based visual timed model transformation framework with a Real-Time Maude semantics that supports the usual Maude formal analysis methods, including simulation, reachability analysis, and LTL model checking. e-Motions is characterized by a novel and powerful set of constructs for expressing timed behaviors. In this paper we illustrate the use of these constructs --- and thereby implicitly investigate their suitability to define real-time systems in an intuitive way --- to define and formally analyze two prototypical and very different real-time systems: (i) a simple round trip time protocol for computing the time it takes a message to travel from one node to another, and back; and (ii) the EDF scheduling algorithm. 
Francisco Dur\'an (Universidad de M\'alaga), Peter Csaba \"Olveczky   (University of Oslo), Jos\'e E. Rivera (Universidad de...
cs.SE cs.LO