| Records |
| 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 |
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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. |
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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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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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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
Sapienza @ mari @ safecomp05 |
Serial |
32 |
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| Author |
Intrigila, Benedetto; Magazzeni, Daniele; Melatti, Igor; Tronci, Enrico |
| Title |
A Model Checking Technique for the Verification of Fuzzy Control Systems |
Type |
Conference Article |
| Year |
2005 |
Publication |
CIMCA '05: Proceedings of the International Conference on Computational Intelligence for Modelling, Control and Automation and International Conference on Intelligent Agents, Web Technologies and Internet Commerce Vol-1 (CIMCA-IAWTIC'06) |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
536-542 |
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| Abstract |
Fuzzy control is well known as a powerful technique for designing and realizing control systems. However, statistical evidence for their correct behavior may be not enough, even when it is based on a large number of samplings. In order to provide a more systematic verification process, the cell-to-cell mapping technology has been used in a number of cases as a verification tool for fuzzy control systems and, more recently, to assess their optimality and robustness. However, cell-to-cell mapping is typically limited in the number of cells it can explore. To overcome this limitation, in this paper we show how model checking techniques may be instead used to verify the correct behavior of a fuzzy control system. To this end, we use a modified version of theMurphi verifier, which ease the modeling phase by allowing to use finite precision real numbers and external C functions. In this way, also already designed simulators may be used for the verification phase. With respect to the cell mapping technique, our approach appears to be complementary; indeed, it explores a much larger number of states, at the cost of being less informative on the global dynamic of the system. |
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| Publisher |
IEEE Computer Society |
Place of Publication |
Washington, DC, USA |
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Edition |
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| ISSN |
0-7695-2504-0-01 |
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| Notes |
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Approved |
yes |
| Call Number |
Sapienza @ mari @ Immt05 |
Serial |
75 |
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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 |
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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. |
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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 |
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Original Title |
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Series Title |
Lecture Notes in Computer Science |
Abbreviated Series Title |
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| Series Volume |
3707 |
Series Issue |
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Edition |
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| ISSN |
3-540-29209-8 |
ISBN |
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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 |
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| Author |
Tronci, Enrico |
| Title |
Introductory Paper |
Type |
Journal Article |
| Year |
2006 |
Publication |
Sttt |
Abbreviated Journal |
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| Volume |
8 |
Issue |
4-5 |
Pages |
355-358 |
| Keywords |
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| Abstract |
In today’s competitive market designing of digital systems (hardware as well as software) faces tremendous challenges. In fact, notwithstanding an ever decreasing project budget, time to market and product lifetime, designers are faced with an ever increasing system complexity and customer expected quality. The above situation calls for better and better formal verification techniques at all steps of the design flow. This special issue is devoted to publishing revised versions of contributions first presented at the 12th Advanced Research Working Conference on Correct Hardware Design and Verification Methods (CHARME) held 21–24 October 2003 in L’Aquila, Italy. Authors of well regarded papers from CHARME’03 were invited to submit to this special issue. All papers included here have been suitably extended and have undergone an independent round of reviewing. |
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Approved |
yes |
| Call Number |
Sapienza @ mari @ sttt06 |
Serial |
30 |
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| Author |
Della Penna, Giuseppe; Tofani, Alberto; Pecorari, Marcello; Raparelli, Orazio; Intrigila, Benedetto; Melatti, Igor; Tronci, Enrico |
| Title |
A Case Study on Automated Generation of Integration Tests |
Type |
Conference Article |
| Year |
2006 |
Publication |
Fdl |
Abbreviated Journal |
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Issue |
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Pages |
278-284 |
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Ecsi |
Place of Publication |
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| ISSN |
978-3-00-019710-9 |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
Sapienza @ mari @ Dtprimt06 |
Serial |
27 |
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| Author |
Bartolini, Novella; Tronci, Enrico |
| Title |
On Optimizing Service Availability of an Internet Based Architecture for Infrastructure Protection |
Type |
Conference Article |
| Year |
2006 |
Publication |
Cnip |
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Approved |
yes |
| Call Number |
Sapienza @ mari @ Bt06 |
Serial |
28 |
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| Author |
Della Penna, Giuseppe; Di Marco, Antinisca; Intrigila, Benedetto; Melatti, Igor; Pierantonio, Alfonso |
| Title |
Interoperability mapping from XML schemas to ER diagrams |
Type |
Journal Article |
| Year |
2006 |
Publication |
Data Knowl. Eng. |
Abbreviated Journal |
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| Volume |
59 |
Issue |
1 |
Pages |
166-188 |
| Keywords |
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| Abstract |
The eXtensible Markup Language (XML) is a de facto standard on the Internet and is now being used to exchange a variety of data structures. This leads to the problem of efficiently storing, querying and retrieving a great amount of data contained in XML documents. Unfortunately, XML data often need to coexist with historical data. At present, the best solution for storing XML into pre-existing data structures is to extract the information from the XML documents and adapt it to the data structures’ logical model (e.g., the relational model of a DBMS). In this paper, we introduce a technique called Xere (XML entity–relationship exchange) to assist the integration of XML data with other data sources. To this aim, we present an algorithm that maps XML schemas into entity–relationship diagrams, discuss its soundness and completeness and show its implementation in XSLT. |
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| Publisher |
Elsevier Science Publishers B. V. |
Place of Publication |
Amsterdam, The Netherlands, The Netherlands |
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Edition |
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| ISSN |
0169-023x |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
Sapienza @ mari @ Ddimp06 |
Serial |
77 |
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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 |
Journal Article |
| Year |
2006 |
Publication |
Int. J. Softw. Tools Technol. Transf. |
Abbreviated Journal |
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| Volume |
8 |
Issue |
4 |
Pages |
397-409 |
| Keywords |
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| 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). |
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| Publisher |
Springer-Verlag |
Place of Publication |
Berlin, Heidelberg |
Editor |
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Series Issue |
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Edition |
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| ISSN |
1433-2779 |
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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 @ Dimtz06 |
Serial |
78 |
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| Author |
Della Penna, Giuseppe; Magazzeni, Daniele; Tofani, Alberto; Intrigila, Benedetto; Melatti, Igor; Tronci, Enrico |
| Title |
Automated Generation of Optimal Controllers through Model Checking Techniques |
Type |
Conference Article |
| Year |
2006 |
Publication |
Icinco-Icso |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
26-33 |
| Keywords |
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| Abstract |
We present a methodology for the synthesis of controllers, which exploits (explicit) model checking techniques. That is, we can cope with the systematic exploration of a very large state space. This methodology can be applied to systems where other approaches fail. In particular, we can consider systems with an highly non-linear dynamics and lacking a uniform mathematical description (model). We can also consider situations where the required control action cannot be specified as a local action, and rather a kind of planning is required. Our methodology individuates first a raw optimal controller, then extends it to obtain a more robust one. A case study is presented which considers the well known truck-trailer obstacle avoidance parking problem, in a parking lot with obstacles on it. The complex non-linear dynamics of the truck-trailer system, within the presence of obstacles, makes the parking problem extremely hard. We show how, by our methodology, we can obtain optimal controllers with different degrees of robustness. |
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INSTICC Press |
Place of Publication |
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Editor |
Andrade-Cetto, J.; Ferrier, J.-L.; Pereira, J. M. C. D.; Filipe, J. |
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Series Title |
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Series Issue |
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Edition |
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| ISSN |
972-8865-59-7 |
ISBN |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
Sapienza @ mari @ Dimmtt06 |
Serial |
79 |
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| Author |
Melatti, Igor; Palmer, Robert; Sawaya, Geoffrey; Yang, Yu; Kirby, Robert Mike; Gopalakrishnan, Ganesh |
| Title |
Parallel and Distributed Model Checking in Eddy |
Type |
Conference Article |
| Year |
2006 |
Publication |
Model Checking Software, 13th International SPIN Workshop, Vienna, Austria, March 30 – April 1, 2006, Proceedings |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
108-125 |
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| Abstract |
Model checking of safety properties can be scaled up by pooling the CPU and memory resources of multiple computers. As compute clusters containing 100s of nodes, with each node realized using multi-core (e.g., 2) CPUs will be widespread, a model checker based on the parallel (shared memory) and distributed (message passing) paradigms will more efficiently use the hardware resources. Such a model checker can be designed by having each node employ two shared memory threads that run on the (typically) two CPUs of a node, with one thread responsible for state generation, and the other for efficient communication, including (i) performing overlapped asynchronous message passing, and (ii) aggregating the states to be sent into larger chunks in order to improve communication network utilization. We present the design details of such a novel model checking architecture called Eddy. We describe the design rationale, details of how the threads interact and yield control, exchange messages, as well as detect termination. We have realized an instance of this architecture for the Murphi modeling language. Called Eddy_Murphi, we report its performance over the number of nodes as well as communication parameters such as those controlling state aggregation. Nearly linear reduction of compute time with increasing number of nodes is observed. Our thread task partition is done in such a way that it is modular, easy to port across different modeling languages, and easy to tune across a variety of platforms. |
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| Publisher |
Springer - Verlag |
Place of Publication |
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Editor |
Valmari, A. |
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Summary Language |
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Original Title |
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Series Title |
Lecture Notes in Computer Science |
Abbreviated Series Title |
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| Series Volume |
3925 |
Series Issue |
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Edition |
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| ISSN |
0302-9743 |
ISBN |
978-3-540-33102-5 |
Medium |
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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 @ Mpsykg06 |
Serial |
81 |
| Permanent link to this record |
