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Author: Kåre Jelling Kristoffersen
Publisher:
ISBN:
Category : Computer software
Languages : en
Pages : 172
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Book Description
Abstract: "This thesis presents a collection of techniques and tools for avoiding the State Explosion Problem in verification of State/Event Systems and real time systems. The algorithms uses [sic] symbolic representations and compositional reasoning as basic means for making verification feasible for large systems. The thesis consists of six papers denoted A-F. In papers A and B we present symbolic techniques for verification of state/event systems. Both techniques uses [sic] compositional reasoning together with a dependency analysis. In paper A an implicit symbolic representation using BDDs is used to keep the state space small during verification. Paper B uses an explicit representation of the intermediate state/transition graphs which are kept small using a context dependent minimization. In paper C we present a method for automatically constructing real time systems directly from their specifications. The model-construction problem is considered for implicit specifications. First symbolic contexts transducing actions and time are introduced as transformers for properties in a timed modal logic. Next, a direct model construction of a regular timed agent from a logical specification is presented. Paper D presents the application of the model checker UPPAAL on the modelling and verification of Philips Audio Control Protocol with bus collision detection. When presented in 1996 this was the largest case study for real time systems that had ever been carried out. Paper E presents a compositional proof of a real time protocol for mutual exclusion. The proof is carried out using a quotient technique. Paper F is an early paper presenting the modelling and analysis of a steam generator using the model checker UPPAAL."
Author: Kåre Jelling Kristoffersen
Publisher:
ISBN:
Category : Computer software
Languages : en
Pages : 172
Get Book Here
Book Description
Abstract: "This thesis presents a collection of techniques and tools for avoiding the State Explosion Problem in verification of State/Event Systems and real time systems. The algorithms uses [sic] symbolic representations and compositional reasoning as basic means for making verification feasible for large systems. The thesis consists of six papers denoted A-F. In papers A and B we present symbolic techniques for verification of state/event systems. Both techniques uses [sic] compositional reasoning together with a dependency analysis. In paper A an implicit symbolic representation using BDDs is used to keep the state space small during verification. Paper B uses an explicit representation of the intermediate state/transition graphs which are kept small using a context dependent minimization. In paper C we present a method for automatically constructing real time systems directly from their specifications. The model-construction problem is considered for implicit specifications. First symbolic contexts transducing actions and time are introduced as transformers for properties in a timed modal logic. Next, a direct model construction of a regular timed agent from a logical specification is presented. Paper D presents the application of the model checker UPPAAL on the modelling and verification of Philips Audio Control Protocol with bus collision detection. When presented in 1996 this was the largest case study for real time systems that had ever been carried out. Paper E presents a compositional proof of a real time protocol for mutual exclusion. The proof is carried out using a quotient technique. Paper F is an early paper presenting the modelling and analysis of a steam generator using the model checker UPPAAL."
Author: Kåre Jelling Kristoffersen
Publisher:
ISBN:
Category :
Languages : en
Pages : 172
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Book Description
Author: Eric Y.T. Juan
Publisher: Springer Science & Business Media
ISBN: 1461510090
Category : Computers
Languages : en
Pages : 210
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Book Description
With the rapid growth of networking and high-computing power, the demand for large-scale and complex software systems has increased dramatically. Many of the software systems support or supplant human control of safety-critical systems such as flight control systems, space shuttle control systems, aircraft avionics control systems, robotics, patient monitoring systems, nuclear power plant control systems, and so on. Failure of safety-critical systems could result in great disasters and loss of human life. Therefore, software used for safety critical systems should preserve high assurance properties. In order to comply with high assurance properties, a safety-critical system often shares resources between multiple concurrently active computing agents and must meet rigid real-time constraints. However, concurrency and timing constraints make the development of a safety-critical system much more error prone and arduous. The correctness of software systems nowadays depends mainly on the work of testing and debugging. Testing and debugging involve the process of de tecting, locating, analyzing, isolating, and correcting suspected faults using the runtime information of a system. However, testing and debugging are not sufficient to prove the correctness of a safety-critical system. In contrast, static analysis is supported by formalisms to specify the system precisely. Formal verification methods are then applied to prove the logical correctness of the system with respect to the specification. Formal verifica tion gives us greater confidence that safety-critical systems meet the desired assurance properties in order to avoid disastrous consequences.
Author: Yee-Tsong Juan
Publisher:
ISBN:
Category :
Languages : en
Pages : 474
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Book Description
Author: W.-P. de Roever
Publisher: Cambridge University Press
ISBN: 9780521806084
Category : Computers
Languages : en
Pages : 26
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Book Description
An advanced 2001 textbook on verification of concurrent programs using a semantic approach which highlights concepts clearly.
Author: Roope Kaivola
Publisher:
ISBN: 9789514573385
Category :
Languages : en
Pages : 185
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Book Description
Author: Jozef Hooman
Publisher: Springer Science & Business Media
ISBN: 9783540549475
Category : Computers
Languages : en
Pages : 254
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Book Description
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.
Author: Werner Damm
Publisher: Springer
ISBN: 354073368X
Category : Computers
Languages : en
Pages : 576
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Book Description
This book constitutes the refereed proceedings of the 19th International Conference on Computer Aided Verification. Thirty-three state-of-the-technology papers are presented, together with fourteen tool papers, three invited papers, and four invited tutorials. All the current issues in computer aided verification and model checking—from foundational and methodological issues to the evaluation of major tools and systems—are addressed.
Author: Wolfgang Böhm
Publisher: Springer Nature
ISBN: 3030621367
Category : Computers
Languages : en
Pages : 404
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Book Description
This Open Access book presents the results of the "Collaborative Embedded Systems" (CrESt) project, aimed at adapting and complementing the methodology underlying modeling techniques developed to cope with the challenges of the dynamic structures of collaborative embedded systems (CESs) based on the SPES development methodology. In order to manage the high complexity of the individual systems and the dynamically formed interaction structures at runtime, advanced and powerful development methods are required that extend the current state of the art in the development of embedded systems and cyber-physical systems. The methodological contributions of the project support the effective and efficient development of CESs in dynamic and uncertain contexts, with special emphasis on the reliability and variability of individual systems and the creation of networks of such systems at runtime. The project was funded by the German Federal Ministry of Education and Research (BMBF), and the case studies are therefore selected from areas that are highly relevant for Germany’s economy (automotive, industrial production, power generation, and robotics). It also supports the digitalization of complex and transformable industrial plants in the context of the German government's "Industry 4.0" initiative, and the project results provide a solid foundation for implementing the German government's high-tech strategy "Innovations for Germany" in the coming years.
Author: Laurence Pierre
Publisher: Springer
ISBN: 3540481532
Category : Computers
Languages : en
Pages : 399
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Book Description
CHARME’99 is the tenth in a series of working conferences devoted to the dev- opment and use of leading-edge formal techniques and tools for the design and veri?cation of hardware and systems. Previous conferences have been held in Darmstadt (1984), Edinburgh (1985), Grenoble (1986), Glasgow (1988), Leuven (1989), Torino (1991), Arles (1993), Frankfurt (1995) and Montreal (1997). This workshop and conference series has been organized in cooperation with IFIP WG 10. 5. It is now the biannual counterpart of FMCAD, which takes place every even-numbered year in the USA. The 1999 event took place in Bad Her- nalb, a resort village located in the Black Forest close to the city of Karlsruhe. The validation of functional and timing behavior is a major bottleneck in current VLSI design systems. A predominantly academic area of study until a few years ago, formal design and veri?cation techniques are now migrating into industrial use. The aim of CHARME’99 is to bring together researchers and users from academia and industry working in this active area of research. Two invited talks illustrate major current trends: the presentation by G ́erard Berry (Ecole des Mines de Paris, Sophia-Antipolis, France) is concerned with the use of synchronous languages in circuit design, and the talk given by Peter Jansen (BMW, Munich, Germany) demonstrates an application of formal methods in an industrial environment. The program also includes 20 regular presentations and 12 short presentations/poster exhibitions that have been selected from the 48 submitted papers.
