Focusing on object-oriented designs, this paper proposes a mapping for translating systems modelled in the Unified Modelling Language (UML) incorporating Object Constraint Language (OCL) constraints into formal software specifications in Object-Z. Joint treatment of semi-formal model constructs and constraints within a single translation framework and conversion tool is novel, and leads to the ...

This paper focuses on the use of ISO Standard Z and CADiZ in the formal validation of Stateflow models against requirements-oriented assumptions. It documents some of what the Simulink/Stateflow Analyser tool does in support of the Practical Formal Specification method. The tool aims to automate the formal validations of the method, so that users of Simulink/Stateflow can benefit from them. The...

Petri nets are used in many fields as modelling technique. The different usage areas and modelling objectives require different classes of Petri nets. Powerful high level Petri nets and especially coloured Petri nets are well suited for describing behavior of distributed information systems in order to verify and analyse them. Extended coloured Petri nets with structured marks are presented in ...

Cognitive modeling has outgrown the toy problems of the research labs and is increasingly tackling Industrial size applications. This growth is not matched in terms of software tools and methodologies. In this paper, we propose a systematic automated approach for verifying the correctness of cognitive models. We present a modular specification language, define model correctness, and present alg...

In this paper we present our design tool GUIDE, which allows the user to explore a design in UML interactively by playing a game. The game incorporates both the design model and a specification of what it means for the design to be correct. The central idea of this approach is that the designer can increment the game during a play and gradually add more detail to it. Specification and design ar...

As digital designs grow evermore complex and design cycles become ever shorter, traditional informal methods of design veriication are proving inadequate. Design teams are increasingly turning to formal techniques to address this \veriication crunch". The theorem prover, with its emphasis on establishing correctness, is arguably the dream design veriication tool; however, theorem provers are ra...

Instruction List (IL) is a simple typed assembly language commonly used in embedded control. There is little tool support for IL and, although defined in the IEC 61131-3 standard, there is no formal semantics. In this work we develop a formal operational semantics. Moreover, we present an abstract semantics, which allows approximative program simulation for a (possibly infinte) set of inputs in...

background: it is believed that improved safety culture/climate is a fundamental element to accident prevention. therefore, development a scale to assess safety climate is a step towards accident control. the purpose of this study was to construct a persian safety climate questionnaire. methods: the study took place in tehran and esfahan oil refineries in iran in 2010. an initial questionnaire ...

Incremental Validation of Formal Specifications by Paul Corwin This thesis presents a tool for the mechanical validation of formal software specifications. The tool is based on a novel approach to incremental validation. In this approach, small-scale aspects of a specification are validated, as part of the stepwise refinement of a formal model. The incremental validation technique can be consid...