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Author (down) Verzino Giovanni ; Cavaliere, Federico; Mari, Federico; Melatti, Igor; Minei, Giovanni; Salvo, Ivano; Yushtein, Yuri; Tronci, Enrico
Title Model checking driven simulation of sat procedures Type Conference Article
Year 2012 Publication Proceedings of 12th International Conference on Space Operations (SpaceOps 2012) Abbreviated Journal International Conference on Space Operations
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Call Number Sapienza @ melatti @ Serial 117
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Author (down) Tronci, Enrico; Della Penna, Giuseppe; Intrigila, Benedetto; Venturini Zilli, Marisa
Title A Probabilistic Approach to Automatic Verification of Concurrent Systems Type Conference Article
Year 2001 Publication 8th Asia-Pacific Software Engineering Conference (APSEC) Abbreviated Journal
Volume Issue Pages 317-324
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Abstract The main barrier to automatic verification of concurrent systems is the huge amount of memory required to complete the verification task (state explosion). In this paper we present a probabilistic algorithm for automatic verification via model checking. Our algorithm trades space with time. In particular, when memory is full because of state explosion our algorithm does not give up verification. Instead it just proceeds at a lower speed and its results will only hold with some arbitrarily small error probability. Our preliminary experimental results show that by using our probabilistic algorithm we can typically save more than 30% of RAM with an average time penalty of about 100% w.r.t. a deterministic state space exploration with enough memory to complete the verification task. This is better than giving up the verification task because of lack of memory.
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Publisher IEEE Computer Society Place of Publication Macau, China Editor
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ISSN 0-7695-1408-1 ISBN Medium
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Notes Approved yes
Call Number Sapienza @ mari @ apsec01 Serial 43
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Author (down) Tronci, Enrico; Della Penna, Giuseppe; Intrigila, Benedetto; Venturini Zilli, Marisa
Title Exploiting Transition Locality in Automatic Verification Type Conference Article
Year 2001 Publication 11th IFIP WG 10.5 Advanced Research Working Conference on Correct Hardware Design and Verification Methods (CHARME) Abbreviated Journal
Volume Issue Pages 259-274
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Abstract In this paper we present an algorithm to contrast state explosion when using Explicit State Space Exploration to verify protocols. We show experimentally that protocols exhibit transition locality. We present a verification algorithm that exploits transition locality as well as an implementation of it within the Mur$\varphi$ verifier. Our algorithm is compatible with all Breadth First (BF) optimization techniques present in the Mur$\varphi$ verifier and it is by no means a substitute for any of them. In fact, since our algorithm trades space with time, it is typically most useful when one runs out of memory and has already used all other state reduction techniques present in the Mur$\varphi$ verifier. Our experimental results show that using our approach we can typically save more than 40% of RAM with an average time penalty of about 50% when using (Mur$\varphi$) bit compression and 100% when using bit compression and hash compaction.
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Publisher Springer Place of Publication Livingston, Scotland, UK Editor Margaria, T.; Melham, T.F.
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Series Editor Series Title Lecture Notes in Computer Science Abbreviated Series Title
Series Volume 2144 Series Issue Edition
ISSN 3-540-42541-1 ISBN Medium
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Notes Approved yes
Call Number Sapienza @ mari @ charme01 Serial 44
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Author (down) Tronci, Enrico
Title Introductory Paper Type Journal Article
Year 2006 Publication Sttt Abbreviated Journal
Volume 8 Issue 4-5 Pages 355-358
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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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Call Number Sapienza @ mari @ sttt06 Serial 30
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Author (down) Tronci, Enrico
Title Automatic Synthesis of Control Software for an Industrial Automation Control System Type Conference Article
Year 1999 Publication Proc.of: 14th IEEE International Conference on: Automated Software Engineering (ASE) Abbreviated Journal
Volume Issue Pages 247-250
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Abstract 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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Publisher Place of Publication Cocoa Beach, Florida, USA Editor
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Call Number Sapienza @ mari @ ase99 Serial 49
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Author (down) Tronci, Enrico
Title Formally Modeling a Metal Processing Plant and its Closed Loop Specifications Type Conference Article
Year 1999 Publication 4th IEEE International Symposium on High-Assurance Systems Engineering (HASE) Abbreviated Journal
Volume Issue Pages 151
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Abstract 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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Publisher IEEE Computer Society Place of Publication Washington, D.C, USA Editor
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Series Editor Series Title Abbreviated Series Title
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ISSN 0-7695-0418-3 ISBN Medium
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Call Number Sapienza @ mari @ hase99 Serial 50
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Author (down) Tronci, Enrico
Title Automatic Synthesis of Controllers from Formal Specifications Type Conference Article
Year 1998 Publication Proc of 2nd IEEE International Conference on Formal Engineering Methods (ICFEM) Abbreviated Journal
Volume Issue Pages 134-143
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Abstract 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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Publisher Place of Publication Brisbane, Queensland, Australia Editor
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Call Number Sapienza @ mari @ icfem98 Serial 52
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Author (down) Tronci, Enrico
Title Equational Programming in Lambda-Calculus via SL-Systems. Part 1 Type Journal Article
Year 1996 Publication Theoretical Computer Science Abbreviated Journal
Volume 160 Issue 1&2 Pages 145-184
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Call Number Sapienza @ mari @ tcs96 Serial 54
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Author (down) Tronci, Enrico
Title Equational Programming in Lambda-Calculus via SL-Systems. Part 2 Type Journal Article
Year 1996 Publication Theoretical Computer Science Abbreviated Journal
Volume 160 Issue 1&2 Pages 185-216
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Call Number Sapienza @ mari @ tcs96a Serial 55
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Author (down) Tronci, Enrico
Title Hardware Verification, Boolean Logic Programming, Boolean Functional Programming Type Conference Article
Year 1995 Publication Tenth Annual IEEE Symposium on Logic in Computer Science (LICS) Abbreviated Journal
Volume Issue Pages 408-418
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Abstract 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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Publisher IEEE Computer Society Place of Publication San Diego, California Editor
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Call Number Sapienza @ mari @ lics95 Serial 56
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