| Records |
| Author |
Della Penna, Giuseppe; Intrigila, Benedetto; Melatti, Igor; Tronci, Enrico; Venturini Zilli, Marisa |
| Title |
Finite Horizon Analysis of Stochastic Systems with the Mur$\varphi$ Verifier |
Type |
Conference Article |
| Year |
2003 |
Publication |
Theoretical Computer Science, 8th Italian Conference, ICTCS 2003, Bertinoro, Italy, October 13-15, 2003, Proceedings |
Abbreviated Journal |
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| Volume |
|
Issue |
|
Pages |
58-71 |
| Keywords |
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| Abstract |
Many reactive systems are actually Stochastic Processes. Automatic analysis of such systems is usually very difficult thus typically one simplifies the analysis task by using simulation or by working on a simplified model (e.g. a Markov Chain). We present a Finite Horizon Probabilistic Model Checking approach which essentially can handle the same class of stochastic processes of a typical simulator. This yields easy modeling of the system to be analyzed together with formal verification capabilities. Our approach is based on a suitable disk based extension of the Mur$\varphi$ verifier. Moreover we present experimental results showing effectiveness of our approach. |
| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Springer |
Place of Publication |
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Editor |
Blundo, C.; Laneve, C. |
| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
Lecture Notes in Computer Science |
Abbreviated Series Title |
|
Series Volume  |
2841 |
Series Issue |
|
Edition |
|
| ISSN |
3-540-20216-1 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
|
Approved |
yes |
| Call Number |
Sapienza @ mari @ DIMTZ03c |
Serial |
90 |
| Permanent link to this record |
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| |
| Author |
Della Penna, Giuseppe; Intrigila, Benedetto; Melatti, Igor; Tronci, Enrico; Venturini Zilli, Marisa |
| Title |
Finite Horizon Analysis of Markov Chains with the Mur$\varphi$ Verifier |
Type |
Conference Article |
| Year |
2003 |
Publication |
Correct Hardware Design and Verification Methods, 12th IFIP WG 10.5 Advanced Research Working Conference, CHARME 2003, L'Aquila, Italy, October 21-24, 2003, Proceedings |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
394-409 |
| Keywords |
|
| Abstract |
In this paper we present an explicit disk based verification algorithm for Probabilistic Systems defining discrete time/finite state Markov Chains. Given a Markov Chain and an integer k (horizon), our algorithm checks whether the probability of reaching an error state in at most k steps is below a given threshold. We present an implementation of our algorithm within a suitable extension of the Mur$\varphi$ verifier. We call the resulting probabilistic model checker FHP-Mur$\varphi$ (Finite Horizon Probabilistic Mur$\varphi$). We present experimental results comparing FHP-Mur$\varphi$ with (a finite horizon subset of) PRISM, a state-of-the-art symbolic model checker for Markov Chains. Our experimental results show that FHP-Mur$\varphi$ can handle systems that are out of reach for PRISM, namely those involving arithmetic operations on the state variables (e.g. hybrid systems). |
| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Springer |
Place of Publication |
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Editor |
Geist, D.; Tronci, E. |
| Language |
|
Summary Language |
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Original Title |
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| Series Editor |
|
Series Title |
Lecture Notes in Computer Science |
Abbreviated Series Title |
|
| Series Volume |
2860 |
Series Issue |
|
Edition |
|
| ISSN |
3-540-20363-X |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
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Conference |
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| Notes |
|
Approved |
yes |
| Call Number |
Sapienza @ mari @ Dimtz03 |
Serial |
84 |
| Permanent link to this record |
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| Author |
Della Penna, Giuseppe; Intrigila, Benedetto; Melatti, Igor; Tronci, Enrico; Venturini Zilli, Marisa |
| Title |
Integrating RAM and Disk Based Verification within the Mur$\varphi$ Verifier |
Type |
Conference Article |
| Year |
2003 |
Publication |
Correct Hardware Design and Verification Methods, 12th IFIP WG 10.5 Advanced Research Working Conference, CHARME 2003, L'Aquila, Italy, October 21-24, 2003, Proceedings |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
277-282 |
| Keywords |
|
| Abstract |
We present a verification algorithm that can automatically switch from RAM based verification to disk based verification without discarding the work done during the RAM based verification phase. This avoids having to choose beforehand the proper verification algorithm. Our experimental results show that typically our integrated algorithm is as fast as (sometime faster than) the fastest of the two base (i.e. RAM based and disk based) verification algorithms. |
| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Springer |
Place of Publication |
|
Editor |
Geist, D.; Tronci, E. |
| Language |
|
Summary Language |
|
Original Title |
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| Series Editor |
|
Series Title |
Lecture Notes in Computer Science |
Abbreviated Series Title |
|
| Series Volume |
2860 |
Series Issue |
|
Edition |
|
| ISSN |
3-540-20363-X |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
Sapienza @ mari @ DIMTZ03a |
Serial |
85 |
| Permanent link to this record |
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| |
| Author |
Martinelli, Marco; Tronci, Enrico; Dipoppa, Giovanni; Balducelli, Claudio |
| Title |
Electric Power System Anomaly Detection Using Neural Networks |
Type |
Conference Article |
| Year |
2004 |
Publication |
8th International Conference on: Knowledge-Based Intelligent Information and Engineering Systems (KES) |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
1242-1248 |
| Keywords |
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| Abstract |
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. |
| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Springer |
Place of Publication |
Wellington, New Zealand |
Editor |
Negoita, M.G.; Howlett, R.J.; Jain, L.C. |
| Language |
|
Summary Language |
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Original Title |
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| Series Editor |
|
Series Title |
Lecture Notes in Computer Science |
Abbreviated Series Title |
|
| Series Volume |
3213 |
Series Issue |
|
Edition |
|
| ISSN |
3-540-23318-0 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
Sapienza @ mari @ kes04 |
Serial |
35 |
| Permanent link to this record |
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| Author |
Lanotte, Ruggero; Maggiolo-Schettini, Andrea; Tini, Simone; Troina, Angelo; Tronci, Enrico |
| Title |
Automatic Covert Channel Analysis of a Multilevel Secure Component |
Type |
Conference Article |
| Year |
2004 |
Publication |
Information and Communications Security, 6th International Conference, ICICS 2004, Malaga, Spain, October 27-29, 2004, Proceedings |
Abbreviated Journal |
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| Volume |
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Issue |
|
Pages |
249-261 |
| Keywords |
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| Abstract |
The NRL Pump protocol defines a multilevel secure component whose goal is to minimize leaks of information from high level systems to lower level systems, without degrading average time performances. We define a probabilistic model for the NRL Pump and show how a probabilistic model checker (FHP-mur$\varphi$) can be used to estimate the capacity of a probabilistic covert channel in the NRL Pump. We are able to compute the probability of a security violation as a function of time for various configurations of the system parameters (e.g. buffer sizes, moving average size, etc). Because of the model complexity, our results cannot be obtained using an analytical approach and, because of the low probabilities involved, it can be hard to obtain them using a simulator. |
| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Springer |
Place of Publication |
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Editor |
Lopez, J.; Qing, S.; Okamoto, E. |
| Language |
|
Summary Language |
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Original Title |
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| Series Editor |
|
Series Title |
Lecture Notes in Computer Science |
Abbreviated Series Title |
|
| Series Volume |
3269 |
Series Issue |
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Edition |
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| ISSN |
|
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
Sapienza @ mari @ icics04 |
Serial |
34 |
| Permanent link to this record |
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| |
| Author |
Della Penna, Giuseppe; Intrigila, Benedetto; Melatti, Igor; Tronci, Enrico; Venturini Zilli, Marisa |
| Title |
Bounded Probabilistic Model Checking with the Mur$\varphi$ Verifier |
Type |
Conference Article |
| Year |
2004 |
Publication |
Formal Methods in Computer-Aided Design, 5th International Conference, FMCAD 2004, Austin, Texas, USA, November 15-17, 2004, Proceedings |
Abbreviated Journal |
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| Volume |
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Issue |
|
Pages |
214-229 |
| Keywords |
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| Abstract |
In this paper we present an explicit verification algorithm for Probabilistic Systems defining discrete time/finite state Markov Chains. We restrict ourselves to verification of Bounded PCTL formulas (BPCTL), that is, PCTL formulas in which all Until operators are bounded, possibly with different bounds. This means that we consider only paths (system runs) of bounded length. Given a Markov Chain $\cal M$ and a BPCTL formula Φ, our algorithm checks if Φ is satisfied in $\cal M$. This allows to verify important properties, such as reliability in Discrete Time Hybrid Systems. We present an implementation of our algorithm within a suitable extension of the Mur$\varphi$ verifier. We call FHP-Mur$\varphi$ (Finite Horizon Probabilistic Mur$\varphi$) such extension of the Mur$\varphi$ verifier. We give experimental results comparing FHP-Mur$\varphi$ with (a finite horizon subset of) PRISM, a state-of-the-art symbolic model checker for Markov Chains. Our experimental results show that FHP-Mur$\varphi$ can effectively handle verification of BPCTL formulas for systems that are out of reach for PRISM, namely those involving arithmetic operations on the state variables (e.g. hybrid systems). |
| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Springer |
Place of Publication |
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Editor |
Hu, A.J.; Martin, A.K. |
| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
Lecture Notes in Computer Science |
Abbreviated Series Title |
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| Series Volume |
3312 |
Series Issue |
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Edition |
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| ISSN |
3-540-23738-0 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
Sapienza @ mari @ Dimtz04 |
Serial |
87 |
| Permanent link to this record |
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| Author |
Campagnano, Edoardo; Ciancamerla, Ester; Minichino, Michele; Tronci, Enrico |
| Title |
Automatic Analysis of a Safety Critical Tele Control System |
Type |
Conference Article |
| Year |
2005 |
Publication |
24th International Conference on: Computer Safety, Reliability, and Security (SAFECOMP) |
Abbreviated Journal |
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| Volume |
|
Issue |
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Pages |
94-107 |
| Keywords |
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| Abstract |
We show how the Mur$\varphi$ model checker can be used to automatically carry out safety analysis of a quite complex hybrid system tele-controlling vehicles traffic inside a safety critical transport infrastructure such as a long bridge or a tunnel. We present the Mur$\varphi$ model we developed towards this end as well as the experimental results we obtained by running the Mur$\varphi$ verifier on our model. Our experimental results show that the approach presented here can be used to verify safety of critical dimensioning parameters (e.g. bandwidth) of the telecommunication network embedded in a safety critical system. |
| Address |
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Thesis |
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| Publisher |
Springer |
Place of Publication |
Fredrikstad, Norway |
Editor |
Winther, R.; Gran, B. A.; Dahll, G. |
| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
Lecture Notes in Computer Science |
Abbreviated Series Title |
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| Series Volume |
3688 |
Series Issue |
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Edition |
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| ISSN |
3-540-29200-4 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
Sapienza @ mari @ safecomp05 |
Serial |
32 |
| Permanent link to this record |
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| Author |
Della Penna, Giuseppe; Intrigila, Benedetto; Melatti, Igor; Tronci, Enrico |
| Title |
Exploiting Hub States in Automatic Verification |
Type |
Conference Article |
| Year |
2005 |
Publication |
Automated Technology for Verification and Analysis: Third International Symposium, ATVA 2005, Taipei, Taiwan, October 4-7, 2005, Proceedings |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
54-68 |
| Keywords |
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| Abstract |
In this paper we present a new algorithm to counteract state explosion when using Explicit State Space Exploration to verify protocol-like systems. We sketch the implementation of our algorithm within the Caching Mur$\varphi$ verifier and give experimental results showing its effectiveness. We show experimentally that, when memory is a scarce resource, our algorithm improves on the time performances of Caching Mur$\varphi$ verification algorithm, saving between 16% and 68% (45% on average) in computation time. |
| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Springer |
Place of Publication |
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Editor |
D.A. Peled; Y.-K. Tsay |
| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
Lecture Notes in Computer Science |
Abbreviated Series Title |
|
| Series Volume |
3707 |
Series Issue |
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Edition |
|
| ISSN |
3-540-29209-8 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
Sapienza @ mari @ Dimt04 |
Serial |
83 |
| Permanent link to this record |
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| Author |
Mari, Federico; Tronci, Enrico |
| Title |
CEGAR Based Bounded Model Checking of Discrete Time Hybrid Systems |
Type |
Conference Article |
| Year |
2007 |
Publication |
Hybrid Systems: Computation and Control (HSCC 2007) |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
399-412 |
| Keywords |
Model Checking, Abstraction, CEGAR, SAT, Hybrid Systems, DTHS |
| 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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| Corporate Author |
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Thesis |
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| Publisher |
Springer |
Place of Publication |
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Editor |
Bemporad, A.; Bicchi, A.; Buttazzo, G.C. |
| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
Lecture Notes in Computer Science |
Abbreviated Series Title |
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| Series Volume |
4416 |
Series Issue |
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Edition |
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| ISSN |
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ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
Sapienza @ mari @ MarTro07 |
Serial |
92 |
| Permanent link to this record |
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| Author |
Cesta, Amedeo; Finzi, Alberto; Fratini, Simone; Orlandini, Andrea; Tronci, Enrico |
| Title |
Flexible Timeline-Based Plan Verification |
Type |
Conference Article |
| Year |
2009 |
Publication |
KI 2009: Advances in Artificial Intelligence, 32nd Annual German Conference on AI, Paderborn, Germany, September 15-18, 2009. Proceedings |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
49-56 |
| Keywords |
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| Abstract |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Springer |
Place of Publication |
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Editor |
Mertsching, Bärbel; Hund, M.; Aziz, M.Z. |
| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
Lecture Notes in Computer Science |
Abbreviated Series Title |
|
| Series Volume |
5803 |
Series Issue |
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Edition |
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| ISSN |
978-3-642-04616-2 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
Sapienza @ mari @ Cffot09 |
Serial |
21 |
| Permanent link to this record |
