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Author |
Mari, Federico; Tronci, Enrico |
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Title |
CEGAR Based Bounded Model Checking of Discrete Time Hybrid Systems |
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Conference Article |
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Year |
2007 |
Publication |
Hybrid Systems: Computation and Control (HSCC 2007) |
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399-412 |
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Keywords |
Model Checking, Abstraction, CEGAR, SAT, Hybrid Systems, DTHS |
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Abstract |
Many hybrid systems can be conveniently modeled as Piecewise Affine Discrete Time Hybrid Systems PA-DTHS. As well known Bounded Model Checking (BMC) for such systems comes down to solve a Mixed Integer Linear Programming (MILP) feasibility problem. We present a SAT based BMC algorithm for automatic verification of PA-DTHSs. Using Counterexample Guided Abstraction Refinement (CEGAR) our algorithm gradually transforms a PA-DTHS verification problem into larger and larger SAT problems. Our experimental results show that our approach can handle PA-DTHSs that are more then 50 times larger than those that can be handled using a MILP solver. |
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Springer |
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Bemporad, A.; Bicchi, A.; Buttazzo, G.C. |
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Lecture Notes in Computer Science |
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4416 |
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yes |
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Call Number  |
Sapienza @ mari @ MarTro07 |
Serial |
92 |
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Author |
Mari, Federico; Melatti, Igor; Salvo, Ivano; Tronci, Enrico; Alvisi, Lorenzo; Clement, Allen; Li, Harry |
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Title |
Model Checking Nash Equilibria in MAD Distributed Systems |
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Conference Article |
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Year |
2008 |
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FMCAD '08: Proceedings of the 2008 International Conference on Formal Methods in Computer-Aided Design |
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1-8 |
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Keywords |
Model Checking, MAD Distributed System, Nash Equilibrium |
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Abstract |
We present a symbolic model checking algorithm for verification of Nash equilibria in finite state mechanisms modeling Multiple Administrative Domains (MAD) distributed systems. Given a finite state mechanism, a proposed protocol for each agent and an indifference threshold for rewards, our model checker returns PASS if the proposed protocol is a Nash equilibrium (up to the given indifference threshold) for the given mechanism, FAIL otherwise. We implemented our model checking algorithm inside the NuSMV model checker and present experimental results showing its effectiveness for moderate size mechanisms. For example, we can handle mechanisms which corresponding normal form games would have more than $10^20$ entries. To the best of our knowledge, no model checking algorithm for verification of mechanism Nash equilibria has been previously published. |
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IEEE Press |
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Piscataway, NJ, USA |
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Cimatti, A.; Jones, R. |
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978-1-4244-2735-2 |
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yes |
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Call Number |
Sapienza @ mari @ MarMelSalTroAlvCle08 |
Serial |
93 |
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Author |
Mari, Federico; Melatti, Igor; Salvo, Ivano; Tronci, Enrico |
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Title |
Undecidability of Quantized State Feedback Control for Discrete Time Linear Hybrid Systems |
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Book Chapter |
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Year |
2012 |
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Theoretical Aspects of Computing – ICTAC 2012 |
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243-258 |
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Springer Berlin Heidelberg |
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Roychoudhury, A.; D'Souza, M. |
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Lecture Notes in Computer Science |
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Series Volume |
7521 |
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978-3-642-32942-5 |
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yes |
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Sapienza @ mari @ Mari2012 |
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99 |
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Author |
Böhm, Corrado; Piperno, Adolfo; Tronci, Enrico |
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Title |
Solving Equations in λ-calculus |
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Conference Article |
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Year |
1989 |
Publication |
Proc. of: Logic Colloquium 88 |
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Padova - Italy |
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yes |
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Call Number |
Sapienza @ mari @ logic-colloquium-88 |
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62 |
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Author |
Tronci, Enrico |
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Title |
Hardware Verification, Boolean Logic Programming, Boolean Functional Programming |
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Conference Article |
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Year |
1995 |
Publication |
Tenth Annual IEEE Symposium on Logic in Computer Science (LICS) |
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408-418 |
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One of the main obstacles to automatic verification of finite state systems (FSSs) is state explosion. In this respect automatic verification of an FSS M using model checking and binary decision diagrams (BDDs) has an intrinsic limitation: no automatic global optimization of the verification task is possible until a BDD representation for M is generated. This is because systems and specifications are defined using different languages. To perform global optimization before generating a BDD representation for M we propose to use the same language to define systems and specifications. We show that first order logic on a Boolean domain yields an efficient functional programming language that can be used to represent, specify and automatically verify FSSs, e.g. on a SUN Sparc Station 2 we were able to automatically verify a 64 bit commercial multiplier. |
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IEEE Computer Society |
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San Diego, California |
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yes |
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Call Number |
Sapienza @ mari @ lics95 |
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56 |
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Author |
Tronci, Enrico |
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Title |
Equational Programming in lambda-calculus |
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Conference Article |
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Year |
1991 |
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Sixth Annual IEEE Symposium on Logic in Computer Science (LICS) |
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191-202 |
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IEEE Computer Society |
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Amsterdam, The Netherlands |
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yes |
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Call Number |
Sapienza @ mari @ lics91 |
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58 |
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Author |
Böhm, Corrado; Tronci, Enrico |
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Title |
X-Separability and Left-Invertibility in lambda-calculus |
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Conference Article |
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Year |
1987 |
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Symposium on Logic in Computer Science (LICS) |
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320-328 |
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IEEE Computer Society |
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Ithaca, New York, USA |
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yes |
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Sapienza @ mari @ lics87 |
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63 |
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Author |
Martinelli, Marco; Tronci, Enrico; Dipoppa, Giovanni; Balducelli, Claudio |
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Title |
Electric Power System Anomaly Detection Using Neural Networks |
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Conference Article |
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2004 |
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8th International Conference on: Knowledge-Based Intelligent Information and Engineering Systems (KES) |
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1242-1248 |
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The aim of this work is to propose an approach to monitor and protect Electric Power System by learning normal system behaviour at substations level, and raising an alarm signal when an abnormal status is detected; the problem is addressed by the use of autoassociative neural networks, reading substation measures. Experimental results show that, through the proposed approach, neural networks can be used to learn parameters underlaying system behaviour, and their output processed to detecting anomalies due to hijacking of measures, changes in the power network topology (i.e. transmission lines breaking) and unexpected power demand trend. |
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Springer |
Place of Publication |
Wellington, New Zealand |
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Negoita, M.G.; Howlett, R.J.; Jain, L.C. |
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Lecture Notes in Computer Science |
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Series Volume |
3213 |
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3-540-23318-0 |
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yes |
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Call Number |
Sapienza @ mari @ kes04 |
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35 |
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Author |
Cesta, Amedeo; Finzi, Alberto; Fratini, Simone; Orlandini, Andrea; Tronci, Enrico |
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Title |
Validation and Verification Issues in a Timeline-based Planning System |
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Conference Article |
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2008 |
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In E-Proc. of ICAPS Workshop on Knowledge Engineering for Planning and Scheduling |
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One of the key points to take into account to foster effective introduction of AI planning and scheduling systems in real world is to develop end user trust in the related technologies. Automated planning and scheduling systems often brings solutions to the users which are neither “obvious†nor immediately acceptable for them. This is due to the ability of these tools to take into account quite an amount of temporal and causal constraints and to employ resolution processes often designed to optimize the solution with respect to non trivial evaluation functions. To increase technology trust, the study of tools for verifying and validating plans and schedules produced by AI systems might be instrumental. In general, validation and verification techniques represent a needed complementary technology in developing domain independent architectures for automated problem solving. This paper presents a preliminary report of the issues concerned with the use of two software tools for formal verification of finite state systems to the validation of the solutions produced by MrSPOCK, a recent effort for building a timeline based planning tool in an ESA project. |
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yes |
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Sapienza @ mari @ Keps08 |
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25 |
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Author |
Bobbio, Andrea; Ciancamerla, Ester; Minichino, Michele; Tronci, Enrico |
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Title |
Functional analysis of a telecontrol system and stochastic measures of its GSM/GPRS connections |
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Journal Article |
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2005 |
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Archives of Transport – International Journal of Transport Problems |
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17 |
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3-4 |
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Sapienza @ mari @ jtp05 |
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31 |
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