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Author: Jeffrey J. Joyce Publisher: ISBN: Category : Compilers (Computer programs) Languages : en Pages : 36
Book Description
Abstract: "We describe exploratory efforts to design and verify a compiler for a formally verified microprocessor as one aspect of the eventual goal of building totally verified systems. Together with a formal proof of correctness for the microprocessor, this yields a precise and rigorously established link between the semantics of the source language and the execution of compiled code by the fabricated microchip. we describe, in particular: (1) how the limitations of real hardware influenced this proof; and (2) how the general framework provided by higher-order logic was used to formalize the compiler correctness problem for a hierarchially structured language."
Author: Jeffrey J. Joyce Publisher: ISBN: Category : Compilers (Computer programs) Languages : en Pages : 36
Book Description
Abstract: "We describe exploratory efforts to design and verify a compiler for a formally verified microprocessor as one aspect of the eventual goal of building totally verified systems. Together with a formal proof of correctness for the microprocessor, this yields a precise and rigorously established link between the semantics of the source language and the execution of compiled code by the fabricated microchip. we describe, in particular: (1) how the limitations of real hardware influenced this proof; and (2) how the general framework provided by higher-order logic was used to formalize the compiler correctness problem for a hierarchially structured language."
Author: Jan L.A. van de Snepscheut Publisher: Springer Science & Business Media ISBN: 9783540513056 Category : Computers Languages : en Pages : 436
Book Description
The papers included in this volume were presented at the Conference on Mathematics of Program Construction held from June 26 to 30, 1989. The conference was organized by the Department of Computing Science, Groningen University, The Netherlands, at the occasion of the University's 375th anniversary. The creative inspiration of the modern computer has led to the development of new mathematics, the mathematics of program construction. Initially concerned with the posterior verification of computer programs, the mathematics have now matured to the point where they are actively being used for the discovery of elegant solutions to new programming problems. Initially concerned specifically with imperative programming, the application of mathematical methodologies is now established as an essential part of all programming paradigms - functional, logic and object-oriented programming, modularity and type structure etc. Initially concerned with software only, the mathematics are also finding fruit in hardware design so that the traditional boundaries between the two disciplines have become blurred. The varieties of mathematics of program construction are wide-ranging. They include calculi for the specification of sequential and concurrent programs, program transformation and analysis methodologies, and formal inference systems for the construction and analysis of programs. The mathematics of specification, implementation and analysis have become indispensable tools for practical programming.
Author: J. Bowen Publisher: Elsevier ISBN: 1483291529 Category : Computers Languages : en Pages : 323
Book Description
As the complexity of embedded computer-controlled systems increases, the present industrial practice for their development gives cause for concern, especially for safety-critical applications where human lives are at stake. The use of software in such systems has increased enormously in the last decade. Formal methods, based on firm mathematical foundations, provide one means to help with reducing the risk of introducing errors during specification and development. There is currently much interest in both academic and industrial circles concerning the issues involved, but the techniques still need further investigation and promulgation to make their widespread use a reality. This book presents results of research into techniques to aid the formal verification of mixed hardware/software systems. Aspects of system specification and verification from requirements down to the underlying hardware are addressed, with particular regard to real-time issues. The work presented is largely based around the Occam programming language and Transputer microprocessor paradigm. The HOL theorem prover, based on higher order logic, has mainly been used in the application of machine-checked proofs. The book describes research work undertaken on the collaborative UK DTI/SERC-funded Information Engineering Dictorate Safemos project. The partners were Inmos Ltd., Cambridge SRI, the Oxford University Computing Laboratory and the University of Cambridge Computer Laboratory, who investigated the problems of formally verifying embedded systems. The most important results of the project are presented in the form of a series of interrelated chapters by project members and associated personnel. In addition, overviews of two other ventures with similar objectives are included as appendices. The material in this book is intended for computing science researchers and advanced industrial practitioners interested in the application of formal methods to real-time safety-critical systems at all levels of abstraction from requirements to hardware. In addition, material of a more general nature is presented, which may be of interest to managers in charge of projects applying formal methods, especially for safety-critical-systems, and others who are considering their use.
Author: John E. Nicholls Publisher: Springer Science & Business Media ISBN: 1447138775 Category : Computers Languages : en Pages : 284
Book Description
The mathematical concepts and notational conventions we know of as Z were first proposed around 1981. Its origins were in line with the objectives of the PRG - to establish a mathematical basis for program ming concepts and to verify the work by case studies with industry. Hence among early Z users some were from academic circles, with interests in the mathematical basis of programming; others came from industry and were involved with pilot projects and case studies linked with the Programming Research Group. Four years ago we had the first Z User Meeting, a fairly modest affair with representatives more or less equally divided between academia and industry. At the first meeting there were, as in this meeting, a variety of technical papers, reports of work in progress and discussions. A number of people from industry came along, either because they had begun to use Z or were curious about the new direction. In the discussion sessions at the end of the meeting, there were calls from attendees for the establishment of a more stable base for the notation, including work on its documentation and standards. Many of these requests have now been satisfied and the notation is now being proposed for standards development.
Author: Geraint Jones Publisher: Springer Science & Business Media ISBN: 144713544X Category : Computers Languages : en Pages : 364
Book Description
These proceedings contain the papers presented at a workshop on Designing Correct Circuits, jointly organised by the Universities of Oxford and Glasgow, and held in Oxford on 26-28 September 1990. There is a growing interest in the application to hardware design of the techniques of software engineering. As the complexity of hardware systems grows, and as the cost both in money and time of making design errors becomes more apparent, so there is an eagerness to build on the success of mathematical techniques in program develop ment. The harsher constraints on hardware designers mean both that there is a greater need for good abstractions and rigorous assurances of the trustworthyness of designs, and also that there is greater reason to expect that these benefits can be realised. The papers presented at this workshop consider the application of mathematics to hardware design at several different levels of abstraction. At the lowest level of this spectrum, Zhou and Hoare show how to describe and reason about synchronous switching circuits using UNilY, a formalism that was developed for reasoning about parallel programs. Aagaard and Leeser use standard mathematical tech niques to prove correct their implementation of an algorithm for Boolean simplification. The circuits generated by their formal synthesis system are thus correct by construction. Thuau and Pilaud show how the declarative language LUSTRE, which was designed for program ming real-time systems, can be used to specify synchronous circuits.
Author: United States. Congress. House. Committee on the Judiciary. Subcommittee on International Law, Immigration, and Refugees Publisher: ISBN: Category : Business & Economics Languages : en Pages : 172
Author: Roderick Bloem Publisher: Springer ISBN: 3319490524 Category : Computers Languages : en Pages : 225
Book Description
This book constitutes the refereed proceedings of the 12th International Haifa Verification Conference, HVC 2016, held in Haifa, Israel in November 2016. The 13 revised full papers and one tool paper presented were carefully reviewed and selected from 26 submissions. They are dedicated to advance the state of the art and state of the practice in verification and testing and are discussing future directions of testing and verification for hardware, software, and complex hybrid systems.
Author: J Strother Moore Publisher: Springer ISBN: 0585336547 Category : Computers Languages : en Pages : 322
Book Description
Mountaineers use pitons to protect themselves from falls. The lead climber wears a harness to which a rope is tied. As the climber ascends, the rope is paid out by a partner on the ground. As described thus far, the climber receives no protection from the rope or the partner. However, the climber generally carries several spike-like pitons and stops when possible to drive one into a small crack or crevice in the rock face. After climbing just above the piton, the climber clips the rope to the piton, using slings and carabiners. A subsequent fall would result in the climber hanging from the piton—if the piton stays in the rock, the slings and carabiners do not fail, the rope does not break, the partner is holding the rope taut and secure, and the climber had not climbed too high above the piton before falling. The climber's safety clearly depends on all of the components of the system. But the piton is distinguished because it connects the natural to the artificial. In 1987 I designed an assembly-level language for Warren Hunt's FM8501 verified microprocessor. I wanted the language to be conveniently used as the object code produced by verified compilers. Thus, I envisioned the language as the first software link in a trusted chain from verified hardware to verified applications programs. Thinking of the hardware as the "rock" I named the language "Piton.
Author: Margus Veanes Publisher: Springer ISBN: 3642389163 Category : Computers Languages : en Pages : 242
Book Description
This book constitutes the refereed proceedings of the 7th International Conference on Test and Proofs, TAP 2013, held in Budapest, Hungary, in June 2013, as part of the STAF 2013 Federated Conferences. The 12 revised full papers presented together with one tutorial were carefully reviewed and selected from 24 submissions. The papers are devoted to the synergy of proofs and tests, to the application of techniques from both sides and their combination for the advancement of software quality. The papers are related to the following topics: test generation; model-based testing and mutants; declarative debugging; and tool testing.
Author: Jeffrey J. Joyce
Author: Jeffrey J. Joyce
Author: Jan L.A. van de Snepscheut
Author: J. Bowen
Author: John E. Nicholls
Author: Geraint Jones
Author: United States. Congress. House. Committee on the Judiciary. Subcommittee on International Law, Immigration, and Refugees
Author: Roderick Bloem
Author: J Strother Moore
Author: Margus Veanes
Author: Alejandro Salado