Model transformations have proved to be powerful in the development of critical systems. According to their intents, they have been used in many domains such as models refinement, simulation, and domain semantics. The formal methods have been successful in the verification and validation of critical systems, and in particular, in the formalization of UML, BPMN, and AADL. However, little research has been done on verifying the transformation itself. In this paper, we extend our previous work using Isabelle/HOL that transforms UML State Machine Diagrams (SMD) to Colored Petri nets (CPN) models and proves that certain structural properties of this transformation are correct. For example, the structural property: Bfor each final state of a SMD model a corresponding place in CPN model should be generated by the transformation^is described and checked using Isabelle/HOL as invariant property. In the current work, we use Scala as environment of executing Isabelle/HOL specifications and we perform the verified transformation using Scala. Moreover, we demonstrate our approach using another case study of transforming BPMN (Business Process Model and Notation) models into Petri nets models and verify the correctness of certain structural properties of this transformation.

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The correctness of transformations has recently begun to attract the attention of the researchers in Model Driven Engineering (MDE). The objective of this article is twofold. First, it presents an approach for transforming BPMN models to Colored Petri nets models using GROOVE and EMF/Xpand tools. Second, it proposes an approach for checking the correctness of the transformation itself. More precisely, we have defined the termination property of the transformation and the preservation of some structural properties of BPMN models by the transformation using the GROOVE graph transformation tool. The authors have also applied the approach on a case study through which the authors have verified the successful termination of the transformation using GROOVE Model Checker and the target model properties using CPN Tools.

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This paper proposes an approach integrating UML 2.0 Activity Diagrams (UML2-AD) and Communicating Sequential Process (CSP) for modeling and verication of software systems. A UML2-AD is used for modeling a software system while CSP is used for verication purposes. The proposed approach consists of another way of transforming UML2-AD models to Communicating Sequential Process (CSP) models. It focuses also on checking the correctness of some properties of the transformation itself. These properties are specified using Linear Temporal Logic (LTL) and verified using the GROOVE model checker. This approach is based on Model Driven Engineering (MDE). The meta-modelling is realized using AToMPM tool while the model transformation and the correctness of its properties are realized using GROOVE tool. Finally, we illustrated this approach through a case study.

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The organization of free, democratic, and transparent elections requires on the one hand an independent national electoral authority that manages all the stages of the electoral process and on the other hand the use of new information and communication techniques to manage the election process. E-voting offers the ability to vote online anytime and from anywhere using a computer, smartphone, or tablet. In addition, it saves time and reduces costs and effort spent in the process. However, the security of e-voting applications deployed on the internet is a difficult task due to the increasing number of cyber-attacks and application vulnerabilities. On the other hand, blockchain technology is an emerging technology with a strong cryptographic foundation. In this paper, the authors propose a new secure e-voting system based on Ethereum blockchain. In addition, they propose a hierarchical coloured petri net (HCPN) model for their e-voting system using CPN Tools. They verify by means of simulation techniques and state space analysis important properties such as absence of deadlocks and livelocks.