Specification and Compositional Verification of Real-Time Systems

Specification and Compositional Verification of Real-Time Systems
Author: Jozef Hooman
Publisher: Springer Science & Business Media
Total Pages: 254
Release: 1991-11-27
Genre: Computers
ISBN: 9783540549475

The research described in this monograph concerns the formal specification and compositional verification of real-time systems. A real-time programminglanguage is considered in which concurrent processes communicate by synchronous message passing along unidirectional channels. To specifiy functional and timing properties of programs, two formalisms are investigated: one using a real-time version of temporal logic, called Metric Temporal Logic, and another which is basedon extended Hoare triples. Metric Temporal Logic provides a concise notationto express timing properties and to axiomatize the programming language, whereas Hoare-style formulae are especially convenient for the verification of sequential constructs. For both approaches a compositional proof system has been formulated to verify that a program satisfies a specification. To deduce timing properties of programs, first maximal parallelism is assumed, modeling the situation in which each process has itsown processor. Next, this model is generalized to multiprogramming where several processes may share a processor and scheduling is based on priorities. The proof systems are shown to be sound and relatively complete with respect to a denotational semantics of the programming language. The theory is illustrated by an example of a watchdog timer.

Temporal Logic in Specification

Temporal Logic in Specification
Author: Behnam Banieqbal
Publisher: Springer Science & Business Media
Total Pages: 458
Release: 1989-10-11
Genre: Computers
ISBN: 9783540518037

Self-concept and coping behaviour are important aspects of development in adolescence. Despite their developmental significance, however, the two areas have rarely been considered in relation to each other. This book is the first in which the two areas are brought together; it suggests that this interaction can open the way to new possibilities for further research and to new implications for applied work with adolescents. Two separate chapters review research carried out in each of the areas. These are followed by a series of more empirically focussed chapters in which issues such as changes in relationship patterns, difficult school situations, leaving school, use of leisure, anxiety and suicidal behaviour are examined in the context of self-concept and coping. The final chapter seeks to identify some of the central themes emerging from this work and discusses possible research and applied implications.

An Introduction to Practical Formal Methods Using Temporal Logic

An Introduction to Practical Formal Methods Using Temporal Logic
Author: Michael Fisher
Publisher: John Wiley & Sons
Total Pages: 368
Release: 2011-03-16
Genre: Technology & Engineering
ISBN: 9781119991465

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.

A Temporal-logic Based Compositional Proof System for Real-time Message Passing

A Temporal-logic Based Compositional Proof System for Real-time Message Passing
Author: Cornell University. Dept. of Computer Science
Publisher:
Total Pages: 24
Release: 1988
Genre: Computer networks
ISBN:

We consider a model of real-time network computation in which synchronous communication events occur during (possibly overlapping) intervals along a dense time scale. A specification language for processes and networks based on real-time temporal logic is defined. We give a simple proof system for network specifications when specifications for component processes are given. The proof system is then extended for a version of real-time CSP, under the assumption that all communications take some fixed length of time. Finally, it is shown that this proof system can be modified to allow varying communication lengths. All versions of the proof system are compositional, sound, and relatively complete.

SOFSEM 2012: Theory and Practice of Computer Science

SOFSEM 2012: Theory and Practice of Computer Science
Author: Mária Bieliková
Publisher: Springer Science & Business Media
Total Pages: 690
Release: 2012-01-09
Genre: Computers
ISBN: 3642276598

This book constitutes the refereed proceedings of the 38th Conference on Current Trends in Theory and Practice of Computer Science, SOFSEM 2012, held in Špindlerův Mlýn, Czech Republic, in January 2012. The 43 revised papers presented in this volume were carefully reviewed and selected from 121 submissions. The book also contains 11 invited talks, 10 of which are in full-paper length. The contributions are organized in topical sections named: foundations of computer science; software and Web engineering; cryptography, security, and verification; and artificial intelligence.

Temporal Logics and Their Applications

Temporal Logics and Their Applications
Author: Antony Galton
Publisher:
Total Pages: 264
Release: 1987
Genre: Computers
ISBN:

FROM THE PREFACE: This book has risen from a conference on Temporal Logic and Its Applications held at the University of Leeds in January 1986, under the auspices of the then newly-created Centre for Theoretical Computer Science. Temporal logic is a field which, having originated within philosophy, has now proved to be of relevance to several distinct areas in computer science. In this publication, all of the aspects of temporal logic are treated together, hopefully providing a stimulus to further inter-disciplinary collaboration, not only as regards temporal logic itself but also in connection with other logical and philosophical issues, which lie at the interface between computing and philosophy.