| Records |
| Author |
Piperno, Adolfo; Tronci, Enrico |
| Title |
Regular Systems of Equations in λ-calculus |
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Journal Article |
| Year |
1990 |
Publication |
Int. J. Found. Comput. Sci. |
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| Volume |
1 |
Issue |
3 |
Pages |
325-340 |
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Many problems arising in equational theories like Lambda-calculus and Combinatory Logic can be expressed by combinatory equations or systems of equations. However, the solvability problem for an arbitrarily given class of systems is in general undecidable. In this paper we shall focus our attention on a decidable class of systems, which will be called regular systems, and we shall analyse some classical problems and well-known properties of Lambda-calculus that can be described and solved by means of regular systems. The significance of such class will be emphasized showing that for slight extensions of it the solvability problem turns out to be undecidable. |
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yes |
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Sapienza @ mari @ ijfcs90 |
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60 |
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| Author |
Böhm, Corrado; Tronci, Enrico |
| Title |
About Systems of Equations, X-Separability, and Left-Invertibility in the lambda-Calculus |
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Journal Article |
| Year |
1991 |
Publication |
Inf. Comput. |
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90 |
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1 |
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1-32 |
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yes |
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Sapienza @ mari @ infcomp91 |
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59 |
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| Author |
Tronci, Enrico |
| Title |
Equational Programming in lambda-calculus |
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Conference Article |
| Year |
1991 |
Publication |
Sixth Annual IEEE Symposium on Logic in Computer Science (LICS) |
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Pages |
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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Sapienza @ mari @ lics91 |
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58 |
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| Author |
Tronci, Enrico |
| Title |
Defining Data Structures via Böhm-Out |
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Journal Article |
| Year |
1995 |
Publication |
J. Funct. Program. |
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5 |
Issue |
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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yes |
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Sapienza @ mari @ jfp95 |
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57 |
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| Author |
Tronci, Enrico |
| Title |
Hardware Verification, Boolean Logic Programming, Boolean Functional Programming |
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Conference Article |
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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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Sapienza @ mari @ lics95 |
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56 |
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| Author |
Tronci, Enrico |
| Title |
Equational Programming in Lambda-Calculus via SL-Systems. Part 2 |
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Journal Article |
| Year |
1996 |
Publication |
Theoretical Computer Science |
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160 |
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1&2 |
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185-216 |
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yes |
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Sapienza @ mari @ tcs96a |
Serial |
55 |
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| Author |
Tronci, Enrico |
| Title |
Equational Programming in Lambda-Calculus via SL-Systems. Part 1 |
Type |
Journal Article |
| Year |
1996 |
Publication |
Theoretical Computer Science |
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160 |
Issue |
1&2 |
Pages |
145-184 |
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yes |
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Sapienza @ mari @ tcs96 |
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54 |
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| Author |
Pugliese, Rosario; Tronci, Enrico |
| Title |
Automatic Verification of a Hydroelectric Power Plant |
Type |
Conference Article |
| Year |
1996 |
Publication |
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 |
| Title |
Automatic Synthesis of Controllers from Formal Specifications |
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Conference Article |
| Year |
1998 |
Publication |
Proc of 2nd IEEE International Conference on Formal Engineering Methods (ICFEM) |
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Pages |
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 |
Fantechi, Alessandro; Gnesi, Stefania; Mazzanti, Franco; Pugliese, Rosario; Tronci, Enrico |
| Title |
A Symbolic Model Checker for ACTL |
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Conference Article |
| Year |
1998 |
Publication |
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 |
Place of Publication |
Boppard, Germany |
Editor |
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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