Emil Sekerinski

Kaisa Sere

This volume contains a collection of case studies in program refinement with the B Method. They show typical program developments from problem analysis to implementation with non-trivial examples. They cover areas for which the B Method was originally conceived as well as the following novel areas: - data structures; - information management; - process control systems; - distributed systems. This volume will primarily be of interest to practitioners who either already use B and want to improve their program refinement techniques, or those who are considering using it and want to learn about its implementation. It will also provide useful background reading for students taking courses in the B Method, Formal Specification, or Refinement.

Case Studies Using the B Method

Program Development by Refinement

Michael Butler

Luigia Petre

The third in a series of international conferences on Integrated Formal Methods, IFM 2002, was held in Turku, Finland, May 15–17, 2002. Turku, situated in the south western corner of the country, is the former capital of Finland. The ? conference was organized jointly by Abo Akademi University and Turku Centre for Computer Science. The theme of IFM 1999 was the integration of state and behavioral based formalisms. For IFM 2000 this was widened to include all aspects pertaining to the integration of formal methods and formal notations. One of the goals of IFM 2002 was to further investigate these themes. Moreover, IFM 2002 explored the relations between formal methods and graphical notations, especially the industrialstandardlanguageforsoftwaredesign,theUni?edModelingLanguage (UML). The themes of IFM 2002 re?ect what we believe is a growing trend in the Formal Methods and Software Engineering research communities. Over the last threedecades,computerscientistshavedevelopedarangeofformalismsfocusing on particular aspects of behavior or analysis, such as sequential program str- tures,concurrentprogramstructures,dataandinformationstructures,temporal reasoning, deductive proof, and model checking. Much e?ort is now being - voted to integrating these methods in order to combine their advantages and ensure they scale up to industrial needs. Graphical notations are now widely used in software engineering and there is growing recognition of the importance ofprovidingthesewiththeformalunderpinningsandformalanalysiscapabilities found in formal methods.

Kaisa Sere

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