El acceso a la versión del editor puede requerir la suscripción del recurso Access to the published version may require subscription Abstract Model transformation is one of the pillars of Model-Driven Engineering (MDE). The increasing complexity of systems and modelling languages has dramatically raised the complexity and size of model transformations as well. Even though many transformation languages and tools have been proposed in the last few years, most of them are directed to the implementation phase of transformation development. In this way, even though transformations should be built using sound engineering principles -just like any other kind of software -there is currently a lack of cohesive support for the other phases of the transformation development, like requirements, analysis, design and testing.In this paper, we propose a unified family of languages to cover the life-cycle of transformation development enabling the engineering of transformations. Moreover, following an MDE approach, we provide tools to partially automate the progressive refinement of models between the different phases and the generation of code for several transformation implementation languages.

Abstract.Distributed systems for open environments, like the Internet, are becoming more frequent and important. However, it is difficult to assure that such systems have the required functional properties. In this paper we use a visual formal specification language, called ObjectBased Graph Grammars (OBGG), to specify asynchronous distributed systems. After discussing the main concepts of OBGG, we propose an approach for the verification of OBGG specifications using model checking. This approach consists on the translation of OBGG specifications into PROMELA (PROcess/PROtocol MEta LAnguage), which is the input language of the SPIN model checker. The approach we use for verification allows one to write properties based on the OBGG specification instead of on the generated PROMELA model.

Abstract. Model transformation is one of the pillars of Model-Driven Engineering (MDE). The increasing complexity of systems and modelling languages has dramatically raised the complexity and size of model trans-formations. Even though many transformation languages and tools have been proposed in the last few years, most of them are directed to the implementation phase of transformation development. However, there is a lack of cohesive support for the other phases of the transformation development, like requirements, analysis, design and testing.In this paper, we propose a unified family of languages to cover the life-cycle of transformation development. Moreover, following an MDE approach, we provide tools to partially automate the progressive refine-ment of models between the different phases and the generation of code for specific transformation implementation languages.

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We present a fully automated approach to verifying safety properties of Executable UML models (xUML). Our tool chain consists of a model transformation program which translates xUML models to the process algebra mCRL2, followed by symbolic model checking using LTSmin. If a safety violation is found, an error trace is visualised as a UML sequence diagram. As a novel feature, our approach allows safety properties to be specified as UML state machines.