Grant Agreement: 644047 INtegrated TOol chain for model-based design of CPSs Foundations for FMI Co-modelling

The objective of Task T2.4 is to provide formal foundations for comodelling with the Functional Mockup Interface (FMI). In Year 2, we have created the first behavioural semantics for the FMI standard. We use the state-rich process algebra, Circus, to present our modelling approach, and indicate how models can be automatically generated from a description of the individual simulations and their dependencies. We illustrate the work using three algorithms for orchestration. A stateless version of the models can be verified using model checking via translation to CSP. With that, we can prove important properties of these algorithms, like termination and determinism, for example. We also show that the example provided in the FMI standard is not a valid algorithm.