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1. #The power of ten rules for developing safety critical code verification
2. #The power of ten rules for developing safety critical code software
3. #The power of ten rules for developing safety critical code code

However, actor-based models with timing constraints are suggested as the prime candidates for modeling CPS because the model of computation has less semantic gap with the nature of CPS.

#The power of ten rules for developing safety critical code verification

Several modeling languages and verification techniques exist and are used for similar purposes and applications. Indeed, the ability to model time is crucial for CPS and there are well-known problems with different concurrency models. So, we need a modeling framework that supports a proper logical timeline, and is more effective than testing and simulation in discovering timing issues that may impact the safety of the CPS.

#The power of ten rules for developing safety critical code software

Moreover, in a CPS we deal with asynchrony intrinsic to distributed software systems, and also the alignment of the timeline in the software system and the physical parts. In such systems, due to the existing interactions between the cyber and physical parts over a communication network, concurrency bugs and timing violations may be present. Verification of safety requirements in cyber-physical systems is a big challenge and of great importance, requiring rigorous solutions.

Moreover, CPSs are commonly safety-critical systems and their failure can have catastrophic consequences on people, environment and facilities. Due to the high interplay between software components and physical processes, in developing software components of such systems we need more robust and rigorous approaches comparing to what is the common practice in software industry today. In cyber-physical systems, we have embedded computers and networks monitoring and controlling the physical processes.

#The power of ten rules for developing safety critical code code

The natural mappings among the models for requirements, the formal models, and the executable code improve the effectiveness and efficiency of the approach.Ĭyber-physical systems (CPSs) are taking over in our everyday life. The Rebeca models include the details of the signals and messages that are passed at the network level including the timing, and this facilitates the generation of executable code. The formally verified models can then be used to develop the executable code. This process can be performed in iterations until satisfaction of desired properties are ensured, and possible ambiguities and inconsistencies in requirements are resolved. Properties of interest are also derived from the structured requirements, and then model checking is used to formally verify the properties. Starting from structured requirements and system architecture design the behavioral models, including Rebeca models, are built. The actor-based textual modeling language, Rebeca, with model checking support is used for formal verification. Cyber-physical systems are distributed, concurrent, asynchronous and event-based reactive systems with timing constraints.

In this paper, we propose a model-driven approach with a focus on guaranteeing safety using formal verification. Model-Driven Development is a promising approach to tackle the complexity of systems through the concept of abstraction, enabling analysis at earlier phases of development. Cyber-physical systems are now in every corner of our lives, and we need robust methods for handling the ever-increasing complexity of their software systems. Software systems are complicated, and the scientific and engineering methodologies for software development are relatively young.