Automatic Verification Of Parameterized Systems By Over Approximation

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Automatic Verification of Parameterized Systems by Over-Approximation

Author : Vladislavs Jahundovics
Publisher : Linköping University Electronic Press
ISBN 13 : 9176859185
Total Pages : 155 pages
Book Rating : 4.1/5 (768 download)

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Book Synopsis Automatic Verification of Parameterized Systems by Over-Approximation by : Vladislavs Jahundovics

Download or read book Automatic Verification of Parameterized Systems by Over-Approximation written by Vladislavs Jahundovics and published by Linköping University Electronic Press. This book was released on 2015-11-17 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a completely automatic verification framework to check safety properties of parameterized systems. A parameterized system is a family of finite state systems where every system consists of a finite number of processes running in parallel the same algorithm. All the systems in the family differ only in the number of the processes and, in general, the number of systems in a family may be unbounded. Examples of parameterized systems are communication protocols, mutual exclusion protocols, cache coherence protocols, distributed algorithms etc. Model-checking of finite state systems is a well-developed formal verification approach of proving properties of systems in an automatic way. However, it cannot be applied directly to parameterized systems because the unbounded number of systems in a family means an infinite state space. In this thesis we propose to abstract an original family of systems consisting of an unbounded number of processes into one consisting of a fixed number of processes. An abstracted system is considered to consist of k+1 components—k reference processes and their environment. The transition relation for the abstracted system is an over-approximation of the transition relation for the original system, therefore, a set of reachable states of the abstracted system is an over-approximation of the set of reachable states of the original one. A safety property is considered to be parameterized by a fixed number of processes whose relationship is in the center of attention in the property. Such processes serve as reference processes in the abstraction. We propose an encoding which allows to perform reachability analysis for an abstraction parameterized by the reference processes. We have successfully verified three classic parameterized systems with replicated processes by applying this method.

Verification, Model Checking, and Abstract Interpretation

Author : Francesco Logozzo
Publisher : Springer
ISBN 13 : 3540781633
Total Pages : 333 pages
Book Rating : 4.5/5 (47 download)

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Book Synopsis Verification, Model Checking, and Abstract Interpretation by : Francesco Logozzo

Download or read book Verification, Model Checking, and Abstract Interpretation written by Francesco Logozzo and published by Springer. This book was released on 2008-02-29 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the proceedings of VMCAI 2007. It features current research from the communities of verification, program certification, model checking, debugging techniques, abstract interpretation, abstract domains, and advancement of hybrid methods.

Formal Techniques for Networked and Distributed Systems – FORTE 2008

Author : Kenji Suzuki
Publisher : Springer Science & Business Media
ISBN 13 : 3540688544
Total Pages : 351 pages
Book Rating : 4.5/5 (46 download)

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Book Synopsis Formal Techniques for Networked and Distributed Systems – FORTE 2008 by : Kenji Suzuki

Download or read book Formal Techniques for Networked and Distributed Systems – FORTE 2008 written by Kenji Suzuki and published by Springer Science & Business Media. This book was released on 2008-05-27 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of FORTE 2008, 28th IFIP WG6.1 - ternational Conference on Formal Techniques for Networked and Distributed Systems. FORTE 2008 was held at the Campus Innovation Center in Tokyo, Japan during June 10–13, 2008. FORTE denotes a series of international wo- ing conferences on formal description techniques applied to computer networks and distributed systems. The conference series started in 1981 under the name PSTV. In 1988 a second series under the name FORTE was set up. Both - ries were united to FORTE/PSTV in 1996. In 2001 the conference changed the name to its current form. Recent conferences of this long series were held in Berlin (2003), Madrid(2004), Taipei(2005), Paris(2006), and Tallinn(2007). As in the previous year, FORTE 2008 was collocated with TESTCOM/ FATES 2008: the 20th IFIP International Conference on Testing of Com- nicating Systems (TESTCOM) and the 8th International Workshop on Formal Approaches to Testing of Software (FATES). The co-location of FORTE and TESTCOM/FATES fostered the collaboration between their communities. The commonspiritofboth conferenceswasunderpinnedby jointopening andclosing sessions, invited talks, as well as joint social events.

Formal Techniques for Distributed Systems

Author : David Lee
Publisher : Springer Science & Business Media
ISBN 13 : 3642021379
Total Pages : 260 pages
Book Rating : 4.6/5 (42 download)

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Book Synopsis Formal Techniques for Distributed Systems by : David Lee

Download or read book Formal Techniques for Distributed Systems written by David Lee and published by Springer Science & Business Media. This book was released on 2009-05-25 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 11th IFIP WG 6.1 International Conference on Formal Methods for Open Object-Based Distributed Systems, FMOODS 2009, and 29th IFIP WG 6.1 Formal Techniques for Networked and Distributed Systems, FORTE 2009, held in Lisboa, Portugal, in June 2009. The 12 revised full papers presented together with 6 short papers were carefully reviewed and selected from 42 submissions. The papers cover topics such as formal verification, algorithms and implementations, modeling and testing, process algebra and calculus as well as analysis of distributed systems.

CONCUR 2010 - Concurrency Theory

Author : Paul Gastin
Publisher : Springer Science & Business Media
ISBN 13 : 3642153747
Total Pages : 613 pages
Book Rating : 4.6/5 (421 download)

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Book Synopsis CONCUR 2010 - Concurrency Theory by : Paul Gastin

Download or read book CONCUR 2010 - Concurrency Theory written by Paul Gastin and published by Springer Science & Business Media. This book was released on 2010-08-18 with total page 613 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 20th International Conference on Concurrency Theory, CONCUR 2010, held in Paris, France, August 31 - September 3, 2010. The 35 revised full papers were carefully reviewed and selected from 107 submissions. The topics include: - Basic models of concurrency such as abstract machines, domain theoretic models, game theoretic models, process algebras, and Petri nets. - Logics for concurrency such as modal logics, probabilistic and stochastic logics, temporal logics, and resource logics. - Models of specialized systems such as biology-inspired systems, circuits, hybrid systems, mobile and collaborative systems, multi-core processors, probabilistic systems, real-time systems, service-oriented computing, and synchronous systems. - Verification and analysis techniques for concurrent systems such as abstract interpretation, atomicity checking, model checking, race detection, pre-order and equivalence checking and run-time verification.

Formal Verification of Tree Ensembles in Safety-Critical Applications

Author : John Törnblom
Publisher : Linköping University Electronic Press
ISBN 13 : 917929748X
Total Pages : 22 pages
Book Rating : 4.1/5 (792 download)

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Book Synopsis Formal Verification of Tree Ensembles in Safety-Critical Applications by : John Törnblom

Download or read book Formal Verification of Tree Ensembles in Safety-Critical Applications written by John Törnblom and published by Linköping University Electronic Press. This book was released on 2020-10-28 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the presence of data and computational resources, machine learning can be used to synthesize software automatically. For example, machines are now capable of learning complicated pattern recognition tasks and sophisticated decision policies, two key capabilities in autonomous cyber-physical systems. Unfortunately, humans find software synthesized by machine learning algorithms difficult to interpret, which currently limits their use in safety-critical applications such as medical diagnosis and avionic systems. In particular, successful deployments of safety-critical systems mandate the execution of rigorous verification activities, which often rely on human insights, e.g., to identify scenarios in which the system shall be tested. A natural pathway towards a viable verification strategy for such systems is to leverage formal verification techniques, which, in the presence of a formal specification, can provide definitive guarantees with little human intervention. However, formal verification suffers from scalability issues with respect to system complexity. In this thesis, we investigate the limits of current formal verification techniques when applied to a class of machine learning models called tree ensembles, and identify model-specific characteristics that can be exploited to improve the performance of verification algorithms when applied specifically to tree ensembles. To this end, we develop two formal verification techniques specifically for tree ensembles, one fast and conservative technique, and one exact but more computationally demanding. We then combine these two techniques into an abstraction-refinement approach, that we implement in a tool called VoTE (Verifier of Tree Ensembles). Using a couple of case studies, we recognize that sets of inputs that lead to the same system behavior can be captured precisely as hyperrectangles, which enables tractable enumeration of input-output mappings when the input dimension is low. Tree ensembles with a high-dimensional input domain, however, seems generally difficult to verify. In some cases though, conservative approximations of input-output mappings can greatly improve performance. This is demonstrated in a digit recognition case study, where we assess the robustness of classifiers when confronted with additive noise.

Theoretical Aspects of Computing - ICTAC 2008

Author : John S. Fitzgerald
Publisher : Springer
ISBN 13 : 3540857621
Total Pages : 466 pages
Book Rating : 4.5/5 (48 download)

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Book Synopsis Theoretical Aspects of Computing - ICTAC 2008 by : John S. Fitzgerald

Download or read book Theoretical Aspects of Computing - ICTAC 2008 written by John S. Fitzgerald and published by Springer. This book was released on 2008-08-25 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on theoretical aspects of computing has a direct impact on the pr- tice of computer systems development. Over many decades, fundamental t- ories have emerged to describe functionality, temporal behavior and resource consumption. Theories of application domains are beginning to be exploited for modelling and analyzing intended computing systems before the expensive c- mitment is made to real programs and hardware. Recent years have seen major improvements in the cost-e?ectiveness of tools supporting the exploitation of theories through proof, model-checking and testing. Against this encouraging background, we are pleased to present papers that show something of the live- ness and diversity of research in theoretical aspects of computing today. ICTAC 2008, the 5th International Colloquium on Theoretical Aspects of Computing, was held on 1-3 September 2008 in Istanbul, Turkey, hosted by - banc? University. The ICTAC series was founded by the International Institute for SoftwareTechnologyof the United Nations University(UNU-IIST). It brings together practitioners and researchers from academia, industry and government to present results and to exchange ideas and experience addressing challenges in both theoretical aspects of computing and in the exploitation of theory through methodsandtoolsforsystemdevelopment. Theseriesalsopromotescooperation in research and education between participants and their institutions, from - veloping and industrial countries, in accordance with the mandate of the United Nations University. The previous ICTAC colloquia were held in Guiyang, China (2004, LNCS 3407), Hanoi, Vietnam (2005, LNCS 3722), Tunis, Tunisia (2006, LNCS 4281) and Macau SAR, China (2007, LNCS 4711).

Verification of Data-Aware Processes via Satisfiability Modulo Theories

Author : Alessandro Gianola
Publisher : Springer Nature
ISBN 13 : 3031427467
Total Pages : 335 pages
Book Rating : 4.0/5 (314 download)

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Book Synopsis Verification of Data-Aware Processes via Satisfiability Modulo Theories by : Alessandro Gianola

Download or read book Verification of Data-Aware Processes via Satisfiability Modulo Theories written by Alessandro Gianola and published by Springer Nature. This book was released on 2023-10-29 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a revised version of the PhD dissertation written by the author at the Free University of Bozen-Bolzano in Italy. It presents a new approach to safety verification of a particular class of infinite-state systems, called Data-Aware Processes (DAPs). To do so, the developed technical machinery requires to devise novel results for uniform interpolation and its combination in the context of automated reasoning. These results are then applied to the analysis of concrete business processes enriched with real data. In 2022, the PhD dissertation won the “BPM Dissertation Award”, granted to outstanding PhD theses in the field of Business Process Management.

Mechanical Verification of Parameterized Real-Time Systems

Author : Thomas Göthel
Publisher : Sudwestdeutscher Verlag Fur Hochschulschriften AG
ISBN 13 : 9783838134604
Total Pages : 240 pages
Book Rating : 4.1/5 (346 download)

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Book Synopsis Mechanical Verification of Parameterized Real-Time Systems by : Thomas Göthel

Download or read book Mechanical Verification of Parameterized Real-Time Systems written by Thomas Göthel and published by Sudwestdeutscher Verlag Fur Hochschulschriften AG. This book was released on 2012-08 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Real-time systems, such as real-time operating systems, often have to be able to cope with an unbounded number of similar components. These systems fall in the class of parameterized systems. Especially in safety-critical areas, formal verification ensures that they behave correctly in all cases. However, the machine-assisted verification of parameterized real-time systems is hard because automatic verification techniques (such as model checking) can be employed directly only for finite instances of a system and are thus incomplete. To overcome this problem, we provide a framework for the mechanical, comprehensive, and semi-automatic verification of parameterized real-time systems. At its core, we employ the process calculus Timed CSP. We provide an interactive theorem proving environment enhanced with debugging capabilities using automatic verification techniques. Thus, finite instances can be checked and debugged with automatic tool support. Then, given the evidence that the overall parameterized real-time system behaves correctly, our theorem proving environment facilitates its semi-automatic, comprehensive verification.

Extensions for Distributed Moving Base Driving Simulators

Author : Anders Andersson
Publisher : Linköping University Electronic Press
ISBN 13 : 9176855244
Total Pages : 18 pages
Book Rating : 4.1/5 (768 download)

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Book Synopsis Extensions for Distributed Moving Base Driving Simulators by : Anders Andersson

Download or read book Extensions for Distributed Moving Base Driving Simulators written by Anders Andersson and published by Linköping University Electronic Press. This book was released on 2017-03-30 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern vehicles are complex systems. Different design stages for such a complex system include evaluation using models and submodels, hardware-in-the-loop systems and complete vehicles. Once a vehicle is delivered to the market evaluation continues by the public. One kind of tool that can be used during many stages of a vehicle lifecycle is driving simulators. The use of driving simulators with a human driver is commonly focused on driver behavior. In a high fidelity moving base driving simulator it is possible to provide realistic and repetitive driving situations using distinctive features such as: physical modelling of driven vehicle, a moving base, a physical cabin interface and an audio and visual representation of the driving environment. A desired but difficult goal to achieve using a moving base driving simulator is to have behavioral validity. In other words, A driver in a moving base driving simulator should have the same driving behavior as he or she would have during the same driving task in a real vehicle.". In this thesis the focus is on high fidelity moving base driving simulators. The main target is to improve the behavior validity or to maintain behavior validity while adding complexity to the simulator. One main assumption in this thesis is that systems closer to the final product provide better accuracy and are perceived better if properly integrated. Thus, the approach in this thesis is to try to ease incorporation of such systems using combinations of the methods hardware-in-the-loop and distributed simulation. Hardware-in-the-loop is a method where hardware is interfaced into a software controlled environment/simulation. Distributed simulation is a method where parts of a simulation at physically different locations are connected together. For some simulator laboratories distributed simulation is the only feasible option since some hardware cannot be moved in an easy way. Results presented in this thesis show that a complete vehicle or hardware-in-the-loop test laboratory can successfully be connected to a moving base driving simulator. Further, it is demonstrated that using a framework for distributed simulation eases communication and integration due to standardized interfaces. One identified potential problem is complexity in interface wrappers when integrating hardware-in-the-loop in a distributed simulation framework. From this aspect, it is important to consider the model design and the intersections between software and hardware models. Another important issue discussed is the increased delay in overhead time when using a framework for distributed simulation.

Computer Aided Verification

Author : Werner Damm
Publisher : Springer
ISBN 13 : 354073368X
Total Pages : 562 pages
Book Rating : 4.5/5 (47 download)

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Book Synopsis Computer Aided Verification by : Werner Damm

Download or read book Computer Aided Verification written by Werner Damm and published by Springer. This book was released on 2007-08-30 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Tools and Algorithms for the Construction and Analysis of Systems

Author : Susanne Graf
Publisher : Springer
ISBN 13 : 3540464190
Total Pages : 570 pages
Book Rating : 4.5/5 (44 download)

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Book Synopsis Tools and Algorithms for the Construction and Analysis of Systems by : Susanne Graf

Download or read book Tools and Algorithms for the Construction and Analysis of Systems written by Susanne Graf and published by Springer. This book was released on 2003-06-29 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 6th International Conference on Tools and Algorithms for the Construction and Analysis of Systems, TACAS 2000, held as part of ETAPS 2000 in Berlin, Germany, in March/April 2000. The 33 revised full papers presented together with one invited paper and two short tool descriptions were carefully reviewed and selected from a total of 107 submissions. The papers are organized in topical sections on software and formal methods, formal methods, timed and hybrid systems, infinite and parameterized systems, diagnostic and test generation, efficient model checking, model-checking tools, symbolic model checking, visual tools, and verification of critical systems.

Tools and Algorithms for the Construction and Analysis of Systems

Author : Armin Biere
Publisher : Springer Nature
ISBN 13 : 3030451909
Total Pages : 501 pages
Book Rating : 4.0/5 (34 download)

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Book Synopsis Tools and Algorithms for the Construction and Analysis of Systems by : Armin Biere

Download or read book Tools and Algorithms for the Construction and Analysis of Systems written by Armin Biere and published by Springer Nature. This book was released on 2020-04-17 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access two-volume set constitutes the proceedings of the 26th International Conference on Tools and Algorithms for the Construction and Analysis of Systems, TACAS 2020, which took place in Dublin, Ireland, in April 2020, and was held as Part of the European Joint Conferences on Theory and Practice of Software, ETAPS 2020. The total of 60 regular papers presented in these volumes was carefully reviewed and selected from 155 submissions. The papers are organized in topical sections as follows: Part I: Program verification; SAT and SMT; Timed and Dynamical Systems; Verifying Concurrent Systems; Probabilistic Systems; Model Checking and Reachability; and Timed and Probabilistic Systems. Part II: Bisimulation; Verification and Efficiency; Logic and Proof; Tools and Case Studies; Games and Automata; and SV-COMP 2020.

Towards Semantically Enabled Complex Event Processing

Author : Robin Keskisärkkä
Publisher : Linköping University Electronic Press
ISBN 13 : 9176854795
Total Pages : 149 pages
Book Rating : 4.1/5 (768 download)

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Book Synopsis Towards Semantically Enabled Complex Event Processing by : Robin Keskisärkkä

Download or read book Towards Semantically Enabled Complex Event Processing written by Robin Keskisärkkä and published by Linköping University Electronic Press. This book was released on 2017-10-30 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Semantic Web provides a framework for semantically annotating data on the web, and the Resource Description Framework (RDF) supports the integration of structured data represented in heterogeneous formats. Traditionally, the Semantic Web has focused primarily on more or less static data, but information on the web today is becoming increasingly dynamic. RDF Stream Processing (RSP) systems address this issue by adding support for streaming data and continuous query processing. To some extent, RSP systems can be used to perform complex event processing (CEP), where meaningful high-level events are generated based on low-level events from multiple sources; however, there are several challenges with respect to using RSP in this context. Event models designed to represent static event information lack several features required for CEP, and are typically not well suited for stream reasoning. The dynamic nature of streaming data also greatly complicates the development and validation of RSP queries. Therefore, reusing queries that have been prepared ahead of time is important to be able to support real-time decision-making. Additionally, there are limitations in existing RSP implementations in terms of both scalability and expressiveness, where some features required in CEP are not supported by any of the current systems. The goal of this thesis work has been to address some of these challenges and the main contributions of the thesis are: (1) an event model ontology targeted at supporting CEP; (2) a model for representing parameterized RSP queries as reusable templates; and (3) an architecture that allows RSP systems to be integrated for use in CEP. The proposed event model tackles issues specifically related to event modeling in CEP that have not been sufficiently covered by other event models, includes support for event encapsulation and event payloads, and can easily be extended to fit specific use-cases. The model for representing RSP query templates was designed as an extension to SPIN, a vocabulary that supports modeling of SPARQL queries as RDF. The extended model supports the current version of the RSP Query Language (RSP-QL) developed by the RDF Stream Processing Community Group, along with some of the most popular RSP query languages. Finally, the proposed architecture views RSP queries as individual event processing agents in a more general CEP framework. Additional event processing components can be integrated to provide support for operations that are not supported in RSP, or to provide more efficient processing for specific tasks. We demonstrate the architecture in implementations for scenarios related to traffic-incident monitoring, criminal-activity monitoring, and electronic healthcare monitoring.

Tools and Algorithms for the Construction and Analysis of Systems

Author : Orna Grumberg
Publisher : Springer
ISBN 13 : 3540712097
Total Pages : 740 pages
Book Rating : 4.5/5 (47 download)

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Book Synopsis Tools and Algorithms for the Construction and Analysis of Systems by : Orna Grumberg

Download or read book Tools and Algorithms for the Construction and Analysis of Systems written by Orna Grumberg and published by Springer. This book was released on 2007-07-05 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 13th International Conference on Tools and Algorithms for the Construction and Analysis of Systems, TACAS 2007, held in Braga, Portugal. Coverage includes software verification, probabilistic model checking and markov chains, automata-based model checking, security, software and hardware verification, decision procedures and theorem provers, as well as infinite-state systems.

Decidability of Parameterized Verification

Author : Roderick Bloem
Publisher : Springer Nature
ISBN 13 : 3031020111
Total Pages : 158 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Decidability of Parameterized Verification by : Roderick Bloem

Download or read book Decidability of Parameterized Verification written by Roderick Bloem and published by Springer Nature. This book was released on 2022-05-31 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: While the classic model checking problem is to decide whether a finite system satisfies a specification, the goal of parameterized model checking is to decide, given finite systems (n) parameterized by n ∈ N, whether, for all n ∈ N, the system (n) satisfies a specification. In this book we consider the important case of (n) being a concurrent system, where the number of replicated processes depends on the parameter n but each process is independent of n. Examples are cache coherence protocols, networks of finite-state agents, and systems that solve mutual exclusion or scheduling problems. Further examples are abstractions of systems, where the processes of the original systems actually depend on the parameter. The literature in this area has studied a wealth of computational models based on a variety of synchronization and communication primitives, including token passing, broadcast, and guarded transitions. Often, different terminology is used in the literature, and results are based on implicit assumptions. In this book, we introduce a computational model that unites the central synchronization and communication primitives of many models, and unveils hidden assumptions from the literature. We survey existing decidability and undecidability results, and give a systematic view of the basic problems in this exciting research area.

Integrated Formal Methods

Author : Wolfgang Ahrendt
Publisher : Springer Nature
ISBN 13 : 3030349683
Total Pages : 554 pages
Book Rating : 4.0/5 (33 download)

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Book Synopsis Integrated Formal Methods by : Wolfgang Ahrendt

Download or read book Integrated Formal Methods written by Wolfgang Ahrendt and published by Springer Nature. This book was released on 2019-11-22 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 15th International Conference on Integrated Formal Methods, IFM 2019, held in Bergen, Norway, in December 2019. The 25 full papers and 3 short papers were carefully reviewed and selected from 95 submissions. The papers cover a broad spectrum of topics: from language design to verification and analysis techniques, to supporting tools and their integration into software engineering practice including both theoretical approaches and practical implementations. Also included are the extended abstracts of 6 "journal-first" papers.