The increasing complexity of software development requires rigorously defined domain specific modelling languages (DSML). Model-driven engineering (MDE) allows users to define their language's syntax in terms of metamodels. Several approaches for defining operational semantics of DSML have also been proposed. These approaches allow, in principle, for model execution and for formal analyses of the DSML. However, most of the time, the executions/analyses are performed via transformations to other languages: code generation, resp. translation to the input language of a model checker. The consequence is that the results (e.g., a program crash log, or a counterexample returned by a model checker) may not be straightforward to interpret by the users of a DSML. In this research report, we propose a formal and operational framework for tracing such results back to the original DSML's syntax and operational semantics.
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