Integrated environments for formally well-founded design and simulation of concurrent systems

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Abstract
An ongoing project concerned with the development of environments that support the specification and design of concurrent systems is reported. The project has two key aspects: an existing and working system, Clara, that supports Milner's CCS as a specification and design language; and the development of general techniques for computer-aided generation of Clara-like environments for other concurrent languages. The Clara environment is emphasized. It has two main components: support for the usage of formal techniques in the design process, and a rich and highly interactive simulation facility. A further distinguishing feature is the environment's graphical user interface which is based on a pictorial version of CCS. The semantics of CCS is defined nonprocedurally in two phases: an operational semantics given as a set of inference rules, and an algebraic semantics represented by a set of equational rules.

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