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Focardi, Riccardo; Gorrieri, Roberto; Lanotte, Ruggero; Maggiolo-Schettini, Andrea; Martinelli, Fabio; Tini, Simone; Tronci, Enrico |
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Title |
Formal Models of Timing Attacks on Web Privacy |
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Journal Article |
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2002 |
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Electronic Notes in Theoretical Computer Science |
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62 |
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229-243 |
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We model a timing attack on web privacy proposed by Felten and Schneider by using three different approaches: HL-Timed Automata, SMV model checker, and tSPA Process Algebra. Some comparative analysis on the three approaches is derived. |
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TOSCA 2001, Theory of Concurrency, Higher Order Languages and Types |
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Sapienza @ mari @ entcs02a |
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47 |
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Author |
Tronci, Enrico |
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Title |
Automatic Synthesis of Control Software for an Industrial Automation Control System |
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Conference Article |
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1999 |
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Proc.of: 14th IEEE International Conference on: Automated Software Engineering (ASE) |
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247-250 |
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We present a case study on automatic synthesis of control software from formal specifications for an industrial automation control system. Our aim is to compare the effectiveness (i.e. design effort and controller quality) of automatic controller synthesis from closed loop formal specifications with that of manual controller design, followed by automatic verification. Our experimental results show that for industrial automation control systems, automatic synthesis is a viable and profitable (especially as far as design effort is concerned) alternative to manual design, followed by automatic verification. |
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Cocoa Beach, Florida, USA |
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yes |
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Sapienza @ mari @ ase99 |
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49 |
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Tronci, Enrico |
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Title |
Formally Modeling a Metal Processing Plant and its Closed Loop Specifications |
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Conference Article |
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1999 |
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4th IEEE International Symposium on High-Assurance Systems Engineering (HASE) |
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151 |
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We present a case study on automatic synthesis of control software from formal specifications for an industrial automation control system. Our aim is to compare the effectiveness (i.e. design effort and controller quality) of automatic controller synthesis from closed loop formal specifications with that of manual controller design followed by automatic verification. The system to be controlled (plant) models a metal processing facility near Karlsruhe. We succeeded in automatically generating C code implementing a (correct by construction) embedded controller for such a plant from closed loop formal specifications. Our experimental results show that for industrial automation control systems automatic synthesis is a viable and profitable (especially as far as design effort is concerned) alternative to manual design followed by automatic verification. |
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IEEE Computer Society |
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Washington, D.C, USA |
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0-7695-0418-3 |
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yes |
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Sapienza @ mari @ hase99 |
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50 |
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Author |
Fantechi, Alessandro; Gnesi, Stefania; Mazzanti, Franco; Pugliese, Rosario; Tronci, Enrico |
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Title |
A Symbolic Model Checker for ACTL |
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Conference Article |
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1998 |
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International Workshop on Current Trends in Applied Formal Method (FM-Trends) |
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228-242 |
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We present SAM, a symbolic model checker for ACTL, the action-based version of CTL. SAM relies on implicit representations of Labeled Transition Systems (LTSs), the semantic domain for ACTL formulae, and uses symbolic manipulation algorithms. SAM has been realized by translating (networks of) LTSs and, possibly recursive, ACTL formulae into BSP (Boolean Symbolic Programming), a programming language aiming at defining computations on boolean functions, and by using the BSP interpreter to carry out computations (i.e. verifications). |
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Springer |
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Boppard, Germany |
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Hutter, D.; Stephan, W.; Traverso, P.; Ullmann, M. |
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Lecture Notes in Computer Science |
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1641 |
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3-540-66462-9 |
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yes |
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Sapienza @ mari @ fm-trends98 |
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51 |
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Author |
Tronci, Enrico |
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Title |
Automatic Synthesis of Controllers from Formal Specifications |
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Conference Article |
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1998 |
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Proc of 2nd IEEE International Conference on Formal Engineering Methods (ICFEM) |
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134-143 |
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Many safety critical reactive systems are indeed embedded control systems. Usually a control system can be partitioned into two main subsystems: a controller and a plant. Roughly speaking: the controller observes the state of the plant and sends commands (stimulus) to the plant to achieve predefined goals. We show that when the plant can be modeled as a deterministic finite state system (FSS) it is possible to effectively use formal methods to automatically synthesize the program implementing the controller from the plant model and the given formal specifications for the closed loop system (plant+controller). This guarantees that the controller program is correct by construction. To the best of our knowledge there is no previously published effective algorithm to extract executable code for the controller from closed loop formal specifications. We show practical usefulness of our techniques by giving experimental results on their use to synthesize C programs implementing optimal controllers (OCs) for plants with more than 109 states. |
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Brisbane, Queensland, Australia |
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yes |
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Sapienza @ mari @ icfem98 |
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52 |
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Author |
Pugliese, Rosario; Tronci, Enrico |
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Title |
Automatic Verification of a Hydroelectric Power Plant |
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Conference Article |
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1996 |
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Third International Symposium of Formal Methods Europe (FME), Co-Sponsored by IFIP WG 14.3 |
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425-444 |
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We analyze the specification of a hydroelectric power plant by ENEL (the Italian Electric Company). Our goal is to show that for the specification of the plant (its control system in particular) some given properties hold. We were provided with an informal specification of the plant. From such informal specification we wrote a formal specification using the CCS/Meije process algebra formalism. We defined properties using μ-calculus. Automatic verification was carried out using model checking. This was done by translating our process algebra definitions (the model) and μ-calculus formulas into BDDs. In this paper we present the informal specification of the plant, its formal specification, some of the properties we verified and experimental results. |
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Springer |
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Oxford, UK |
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Gaudel, M.-C.; Woodcock, J. |
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Lecture Notes in Computer Science |
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1051 |
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3-540-60973-3 |
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yes |
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Sapienza @ mari @ fme96 |
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53 |
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Author |
Tronci, Enrico |
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Title |
Equational Programming in Lambda-Calculus via SL-Systems. Part 1 |
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Journal Article |
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1996 |
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Theoretical Computer Science |
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160 |
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1&2 |
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145-184 |
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Sapienza @ mari @ tcs96 |
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54 |
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Tronci, Enrico |
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Title |
Equational Programming in Lambda-Calculus via SL-Systems. Part 2 |
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1996 |
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Theoretical Computer Science |
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160 |
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1&2 |
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185-216 |
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Sapienza @ mari @ tcs96a |
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55 |
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Author |
Tronci, Enrico |
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Title |
Hardware Verification, Boolean Logic Programming, Boolean Functional Programming |
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1995 |
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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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Sapienza @ mari @ lics95 |
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56 |
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Author |
Tronci, Enrico |
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Title |
Defining Data Structures via Böhm-Out |
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Journal Article |
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Year |
1995 |
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J. Funct. Program. |
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5 |
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1 |
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51-64 |
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We show that any recursively enumerable subset of a data structure can be regarded as the solution set to a B??hm-out problem. |
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Sapienza @ mari @ jfp95 |
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57 |
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