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3 edition of A formally verified alrgothim for interactive consistency under a hybrid fault model found in the catalog.

A formally verified alrgothim for interactive consistency under a hybrid fault model

Patrick Lincoln

A formally verified alrgothim for interactive consistency under a hybrid fault model

  • 25 Want to read
  • 39 Currently reading

Published by National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, National Technical Information Service, distributor] in [Washington, D.C.], [Springfield, Va .
Written in English

    Subjects:
  • Algorithms.,
  • Computer algorithms.,
  • Fault-tolerant computing.

  • Edition Notes

    StatementPatrick Lincoln and John Rushby.
    SeriesNASA contractor report -- 4527., NASA contractor report -- NASA CR-4527.
    ContributionsRushby, John., United States. National Aeronautics and Space Administration. Scientific and Technical Information Program.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL17679210M

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A formally verified alrgothim for interactive consistency under a hybrid fault model by Patrick Lincoln Download PDF EPUB FB2

The discipline of mechanically checked formal verification eventually enabled us to develop a correct algorithm for Interactive Consistency under the hybrid fault model. We present this algorithm, discuss its subtle points, and describe its formal specification and verification.

Be-cause informal proofs seem unreliable in this domain, and because the. The discipline of mechanically checked formal verification eventually enabled us to develop a correct algorithm for Interactive Consistency under the hybrid fault model.

We present this algorithm, discuss its subtle points, and describe its formal specification and verification. We argue that formal verification systems such as PVS are now sufficiently effective that their application to fault-tolerance algorithms. The Formal Verification of an Algorithm for Interactive Consistency under a Hybrid Fault Model by Dr.

Patrick Lincoln & Dr. John Rushby. Lecture Notes in Computer Science, Volume From Computer-Aided Verification, CAV ' Edited by Costas Courcoubetis. Springer-Verlag, Elounda, Greece. June/July, Pages – Abstract. The discipline of mechanically-checked formal verification eventually enabled us to develop a correct algorithm for Interactive Consistency under the hybrid fault model.

In the paper, we present this algorithm, discuss its subtle points, and describe its formal specification and verification. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Thambidurai and Park [13] have proposed an algorithm for Interactive Consistency that retains resilience to the arbitrary (or Byzantine) fault mode, while tolerating more faults of simpler kinds than standard Byzantine-resilent algorithms.

Unfortunately, and despite a published proof of correctness, their algorithm is. BibTeX @INPROCEEDINGS{Lincoln93aformally, author = {Patrick Lincoln and John Rushby}, title = {A formally verified algorithm for interactive consistency under a hybrid fault model}, booktitle = {IN FAULT TOLERANT COMPUTING SYMPOSIUM 23}, year = {}, pages = {}, publisher = {IEEE Computer Society}}.

BibTeX @INPROCEEDINGS{Lincoln93theformal, author = {Patrick Lincoln and John Rushby}, title = {The Formal Verification of an Algorithm for Interactive Consistency under a Hybrid Fault Model}, booktitle = {In Costas Courcoubetis, editor, Computer-Aided Verification, CAV '93, volume of Lecture Notes in Computer Science}, year = {}, pages = {}, publisher = {Springer-Verlag}}.

A Formally Veri ed Algorithm for Interactive Consistency Under a Hybrid Fault Model Patrick Lincoln and John Rushby Computer Science Laboratory SRI International Menlo Park CA USA Abstract Thambidurai and Park [13] have proposed an algo-rithm for Interactive Consistency that retains resilience to the arbitrary (or Byzantine) fault mode, while tol.

The discipline of mechanically checked formal verification eventually enabled us to develop a correct algorithm for Interactive Consistency under the hybrid fault model. This algorithm withstands $a$ asymmetric, $s$ symmetric, and $b$ benign faults simultaneously, using $m+1$ rounds, provided $n is greater than 2a + 2s + b + m$, and $m\geg a$.

Because the extended case-analysis required by the new fault model complicates the already intricate argument for correctness of the algorithm, it has been subjected to mechanically-checked formal verification. The fault model examined is similar to the ``hybrid'' one previously used for the problem of Interactive Consistency (Byzantine Agreement): in addition to arbitrary faults, we also admit.

A Formally Verified Algorithm for Interactive Consistency Under a Hybrid Fault Model. By Patrick Lincoln and John Rushby. Abstract. Thambidurai and Park [13] have proposed an algorithm for Interactive Consistency that retains resilience to the arbitrary (or Byzantine) fault mode, while tolerating more faults of simpler kinds than standard.

Formal Verification of an Interactive Consistency Algorithm for the Draper FTP Architecture Under a Hybrid Fault Model by Dr. Patrick Lincoln & Dr. John Rushby. From Compass '94 (Proceedings of the Ninth Annual Conference on Computer Assurance). IEEE Washington Section, Gaithersburg, MD.

June, Pages – Abstract. BibTeX @INPROCEEDINGS{Lincoln94formalverification, author = {Patrick Lincoln and John Rushby}, title = {Formal Verification of an Interactive Consistency Algorithm for the Draper FTP Architecture Under a Hybrid Fault Model}, booktitle = {In COMPASS ’94 (Proceedings of the Ninth Annual Conference on Computer Assurance}, year = {}, pages = {}}.

The Formal Verification of an Algorithm for Interactive Consistency under a Hybrid Fault Model. Modern verification systems such as PVS are now reaching the stage of development where the formal verification of critical algorithms is feasible with reasonable effort.

This paper describes one such verification in the field of fault tolerance. Lincoln, P., Rushby, J.: Formal verification of an interactive consistency algorithm for the Draper FTP architecture under a hybrid fault model.

In: Proc. 9th Conf. on Computer Assurance, COMPASS () Google Scholar. A formally verified algorithm for interactive consistency under a hybrid fault model By Patrick Lincoln and John Rushby Topics: Office of Management.

This article describes a formal analysis technique, called consistency checking, for automatic detection of errors, such as type errors, nondeterminism, missing cases, and circular definitions, in requirements technique is designed to analyze requirements specifications expressed in the SCR (Software Cost Reduction) tabular notation.

It is an automated and interactive theorem prover for a natural specification and verification logic for hybrid systems. KeYmaera supports differential dynamic logic (dL) [ 4, 6, 27 ], which is a first-order dynamic logic for hybrid programs [ 4, 6, 27 ], a program notation for hybrid systems.

We describe our experience in the mechanical verification of the safety invariants of an asynchronous garbage-collection algorithm [1], using the TLP system [2].

We only give a cursory overview of the algorithm and its formalisation. Part of the Lecture Notes in Computer Science book series (LNCS, volume ) Papers Table of contents (40 papers) About About The formal verification of an algorithm for interactive consistency under a hybrid fault model.

Patrick Lincoln, John Rushby. Pages PDF. Mixed Consistency: A Model for Parallel Programming (Extended Abstract). view. A Formally Verifiable Algorithm for Clock Synchronization under a Hybrid Fault Model.

view. electronic edition via DOI; The Formal Verification of an ATM Network. view. Formal verification of an interactive consistency algorithm for the Draper FTP architecture under a hybrid fault model.

In Computer Assurance, COMPASS’94 Safety, Reliability, Fault Tolerance, Concurrency and Real Time, Security. Erik Seligman, M V Achutha Kiran Kumar, in Formal Verification, Model Checking.

Model checking is the primary technique used by FV tools to analyze the behavior of a sequential system over a period of time. Given a set of requirements defined as temporal logic properties and a finite-state system, a model-checking algorithm can search over the possible future states and determine.

A formally verified algorithm for interactive consistency under a hybrid fault model, P Lincoln, J Rushby, Fault-Tolerant Computing, FTCS Digest of Papers., Also appears in FTCS: Highlights from 25 Years,pp.

– cited   Formal verification of an interactive consistency algorithm for the Draper FTP architecture under a hybrid fault model An ultrareliable integrated digital computer for helicopters Reducing the probability of common-mode failure in the fault tolerant parallel processor.

A Synthesized Algorithm for Interactive Consistency. Adrià Gascón, Ashish Tiwari theorem proving, static analysis, model-based development, runtime monitoring, formal approaches to fault tolerance, applications of formal methods to aerospace systems, formal analysis of cyber-physical systems, including hybrid and embedded systems, formal.

Lincoln, Patrick; and Rushby, John: A Formally Verified Algorithm for Interactive Consistency under a Hybrid Fault Model. In Fault Tolerant Computing Sympos Toulouse, France, JuneIEEE Computer Society, pp. Interactive theorem proving has made significant progress in the formal verification of classical programs and systems.

Here, we focus on listing some tools designed for special kinds of systems. EasyCrypt [ 10, 11 ] is an interactive framework for verifying the security of cryptographic constructs in the computational model. A Consistency Condition Supporting Design and Verification of Byzantine Adaptive Agreement Protocols.

Kommunikation in verteilten Systemen, () Automatically increasing the fault-tolerance of distributed algorithms. Formal methods for life-cycle assessment first emerged in a series of meetings organized by the Society for Environmental Toxicology and Chemistry (SETAC) of which the most significant were held in and This led, from on, to a set of standards for conducting an LCA, issued by the International Standards Organization (ISO and its subsections, and ).

Verification, Model Checking, and Abstract Interpretation, () Correct execution of transactions at different isolation levels. IEEE Transactions. In this section, we present a verification approach based on the formal model checking of resource discovery behaviors.

In Fig. 7, we describe the model checking mechanism for verifying behavior models of the resource discovery approach by means of logical problems, Kripke structure of behaviors, checking properties and converting behavioral. Papers with code. Sorted by stars. Updated weekly. - zziz/pwc.

Characteristics. A Byzantine fault is any fault presenting different symptoms to different observers. A Byzantine failure is the loss of a system service due to a Byzantine fault in systems that require consensus. The objective of Byzantine fault tolerance is to be able to defend against failures of system components with or without symptoms that prevent other components of the system from.

A formally verified algorithm for interactive consistency under a hybrid fault model P Lincoln, J Rushby FTCS The Twenty-Third International Symposium on Fault-Tolerant Computing Model checking is an influential method to verify complex interactions, concurrent and distributed systems.

Model checking constructs a behavioral model of the system using formal concepts such as operations, states, events and actions.

The model checkers suffer some weaknesses such as state space explosion problem that has high memory consumption and time complexity. is sequentially consistent. We specify the algorithm and sequential consistency in TLA+, a formal specification language based on TLA (the Temporal Logic of Actions).

We then describe a formal correctness proof in TLA. (50 pages) Appeared in Distributed Comput 2/3,Postscript - DVI. This book constitutes the refereed proceedings of the Fourth International Symposium on NASA Formal Methods, NFMheld in Norfolk, VA, USA, in April The 36 revised regular papers presented together with 10 short papers, 3 invited talks were carefully reviewed and selected from Model checking is a formal technique for verifying the behavioral properties of a given system, on the basis of a suitable model of the system and a systematic inspection of all states of the model.

This book is written by two active researchers in model checking, and it offers detailed descriptions of verification principles and techniques. The control of unmanned aircraft systems must be rigorously tested and verified to ensure their correct functioning and airworthiness.

Incorporating components that use novel techniques such as deep learning can pose a significant challenge because traditional approaches for detecting errors require deriving a model of a correctly performing controller, which can be intractable.

() Optimal stateless model checking for reads-from equivalence under sequential consistency. Proceedings of the ACM on Programming Languages 3:OOPSLA, () On the complexity of checking transactional consistency.

This book thoroughly covers the macroscopic physics of light transport, hemispherical coordinates, and statistics, not to mention several global illumination algorithms in depth. Although it might not be a perfect introduction to the basics of ray tracing, stochastic ray tracing is covered as s: 9.Under a formal Strong Eventual Consistency (SEC) model, we study sufficient conditions for convergence.

A data type that satisfies these conditions is called a Conflict-free Replicated Data Type.