Industrial Use of Formal Methods. Formal Verification

Although formal analysis programming techniques may be quite old, the introduction of formal methods only dates from the 1980s. These techniques enable us to analyze the behavior of a software application, described in a programming language. It took until the end of the 1990s before formal methods or the B method could be implemented in industrial applications or be usable in an industrial setting. Current literature only gives students and researchers very general overviews of formal methods. The purpose of this book is to present feedback from experience on the use of “formal methods” (such as proof and model-checking) in industrial examples within the transportation domain. This book is based on the experience of people who are currently involved in the creation and evaluation of safety critical system software. The involvement of people from within the industry allows us to avoid the usual problems of confidentiality which could arise and thus enables us to supply new useful information (photos, architecture plans, real examples, etc.). Topics covered by the chapters of this book include SAET-METEOR, the B method and B tools, model-based design using Simulink, the Simulink design verifier proof tool, the implementation and applications of SCADE (Safety Critical Application Development Environment), GATeL: A V&V Platform for SCADE models and ControlBuild. Contents 1. From Classic Languages to Formal Methods, Jean-Louis Boulanger. 2. Formal Method in the Railway Sector the First Complex Application: SAET-METEOR, Jean-Louis Boulanger. 3. The B Method and B Tools, Jean-Louis Boulanger. 4. Model-Based Design Using Simulink – Modeling, Code Generation, Verification, and Validation, Mirko Conrad and Pieter J. Mosterman. 5. Proving Global Properties with the Aid of the SIMULINK DESIGN VERIFIER Proof Tool, V?ronique Delebarre and Jean-Fr?d?ric Etienne. 6. SCADE: Implementation and Applications, Jean-Louis Camus. 7. GATeL: A V&V Platform for SCADE Models, Bruno Marre, Benjamin Bianc, Patricia Mouy and Christophe Junke. 8. ControlBuild, a Development Framework for Control Engineering, Franck Corbier. 9. Conclusion, Jean-Louis Boulanger.

A presentation of real examples of industrial uses for formal methods such as SCADE, the B-Method, ControlBuild, Matelo, etc. in various fields, such as railways, aeronautics, and the automotive industry, the purpose of this book is to present a summary of experience on the use of these “formal methods” (such as proof and model-checking) in industrial examples of complex systems. It is based on the experience of people who are currently involved in the creation and evaluation of safety critical system software. The involvement of people from within the industry allows us to avoid the usual problems of confidentiality which could arise and thus enables us to supply new useful information (photos, architecture plans, real examples, etc.).

Today, formal methods are widely recognized as an essential step in the design process of industrial safety-critical systems. In its more general definition, the term formal methods encompasses all notations having a precise mathematical semantics, together with their associated analysis methods, that allow description and reasoning about the behavior of a system in a formal manner. Growing out of more than a decade of award-winning collaborative work within the European Research Consortium for Informatics and Mathematics, Formal Methods for Industrial Critical Systems: A Survey of Applications presents a number of mainstream formal methods currently used for designing industrial critical systems, with a focus on model checking. The purpose of the book is threefold: to reduce the effort required to learn formal methods, which has been a major drawback for their industrial dissemination; to help designers to adopt the formal methods which are most appropriate for their systems; and to offer a panel of state-of-the-art techniques and tools for analyzing critical systems.

This book presents real-world examples of formal techniques in an industrial context. It covers formal methods such as SCADE and/or the B Method, in various fields such as railways, aeronautics, and the automotive industry. The purpose of this book is to present a summary of experience on the use of “formal methods” (based on formal techniques such as proof, abstract interpretation and model-checking) in industrial examples of complex systems, based on the experience of people currently involved in the creation and assessment of safety critical system software. The involvement of people from within the industry allows the authors to avoid the usual confidentiality problems which can arise and thus enables them to supply new useful information (photos, architecture plans, real examples, etc.). The authors cover the following topics: an example of use of SCADE, constraint solving in B, validation of Petri Nets-based automated rail safety, data validation, etc.

Formal Semantics: The Essential Readings is a collection of seminal papers that have shaped the field of formal semantics in linguistics.

The name «temporal logic» may sound complex and daunting; but while they describe potentially complex scenarios, temporal logics are often based on a few simple, and fundamental, concepts – highlighted in this book. An Introduction to Practical Formal Methods Using Temporal Logic provides an introduction to formal methods based on temporal logic, for developing and testing complex computational systems. These methods are supported by many well-developed tools, techniques and results that can be applied to a wide range of systems. Fisher begins with a full introduction to the subject, covering the basics of temporal logic and using a variety of examples, exercises and pointers to more advanced work to help clarify and illustrate the topics discussed. He goes on to describe how this logic can be used to specify a variety of computational systems, looking at issues of linking specifications, concurrency, communication and composition ability. He then analyses temporal specification techniques such as deductive verification, algorithmic verification, and direct execution to develop and verify computational systems. The final chapter on case studies analyses the potential problems that can occur in a range of engineering applications in the areas of robotics, railway signalling, hardware design, ubiquitous computing, intelligent agents, and information security, and explains how temporal logic can improve their accuracy and reliability. Models temporal notions and uses them to analyze computational systems Provides a broad approach to temporal logic across many formal methods – including specification, verification and implementation Introduces and explains freely available tools based on temporal logics and shows how these can be applied Presents exercises and pointers to further study in each chapter, as well as an accompanying website providing links to additional systems based upon temporal logic as well as additional material related to the book.

Compositionality in Formal Semantics is a collection of Barbara Partee’s papers that have been influential in the field but are not readily available and includes a new introductory essay in which Partee reflects on how her thinking and the field of semantics have developed over the past 35 years. Brings together, in one volume, influential but difficult to find papers by one of the most important researchers in formal semantics. Includes a new introductory essay in which Partee reflects on how her research and the field of semantics have developed over the past 35 years. Discusses critical themes in semantic theory.

This book studies formal semantics in modern type theories (MTTsemantics). Compared with simple type theory, MTTs have much richer type structures and provide powerful means for adequate semantic constructions. This offers a serious alternative to the traditional settheoretical foundation for linguistic semantics and opens up a new avenue for developing formal semantics that is both model-theoretic and proof-theoretic, which was not available before the development of MTTsemantics. This book provides a reader-friendly and precise description of MTTs and offers a comprehensive introduction to MTT-semantics. It develops several case studies, such as adjectival modification and copredication, to exemplify the attractiveness of using MTTs for the study of linguistic meaning. It also examines existing proof assistant technology based on MTT-semantics for the verification of semantic constructions and reasoning in natural language. Several advanced topics are also briefly studied, including dependent event types, an application of dependent typing to event semantics.

This authoritative introduction explores the four main non-transformational syntactic frameworks: Head-driven Phrase Structure Grammar, Lexical-Functional Grammar, Categorial Grammar, and Simpler Syntax. It also considers a range of issues that arise in connection with these approaches, including questions about processing and acquisition. An authoritative introduction to the main alternatives to transformational grammar Includes introductions to three long-established non-transformational syntactic frameworks: Head-driven Phrase Structure Grammar, Lexical-Functional Grammar, and Categorial Grammar, along with the recently developed Simpler Syntax Brings together linguists who have developed and shaped these theories to illustrate the central properties of these frameworks and how they handle some of the main phenomena of syntax Discusses a range of issues that arise in connection with non-transformational approaches, including processing and acquisition