Recent Trends in Algebraic Development Techniques: 15th International Workshop, WADT 2001 Joint with the CoFI WG Meeting Genova, Italy, April 1–3, 2001 Selected Papers

353 Pages·2001·3.863 MB·English

by  Roswitha Bardohl, Martin Groβe-Rhode (auth.), Maura Cerioli, Gianna Reggio (eds.)

Lecture Notes in Computer Science 2267
EditedbyG.Goos,J.Hartmanis,andJ.vanLeeuwen
3
Berlin
Heidelberg
NewYork
Barcelona
HongKong
London
Milan
Paris
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Maura Cerioli Gianna Reggio (Eds.)
Recent Trends
in Algebraic
Development Techniques
15th International Workshop, WADT 2001
Joint with the CoFI WG Meeting
Genova, Italy,April 1-3, 2001
Selected Papers
1 3
SeriesEditors
GerhardGoos,KarlsruheUniversity,Germany
JurisHartmanis,CornellUniversity,NY,USA
JanvanLeeuwen,UtrechtUniversity,TheNetherlands
VolumeEditors
MauraCerioli
GiannaReggio
UniversitàdiGenova
DISI-DipartimentoeInformaticadiScienzedell’Informazione
ViaDodecaneso,35,16146Genova,Italy
E-mail:{cerioli,reggio}@disi.unige.it
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Recenttrendsinalgebraicdevelopmenttechniques:15thinternational
workshop;selectedpapers/WADT2001jointwiththeCoFIWGMeeting,
Genova,Italy,April1-3,2001.MauraCerioli;GiannaReggio(ed.).-
Berlin;Heidelberg;NewYork;Barcelona;HongKong;London;Milan;
Paris;Tokyo:Springer,2002
(Lecturenotesincomputerscience;Vol.2267)
ISBN3-540-43159-4
CRSubjectClassification(1998):F.3.1,F.4,I.1,D.2.1
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Preface
The algebraic approach to system specification and development, born in the
early1970sasaformalmethodforabstractdatatypes,encompassestoday,atthe
beginningofthethirdmillennium,theformaldesignofintegratedhardwareand
software systems, new specification frameworks and programming paradigms,
andawiderangeofapplicationareas.TheworkshopsonAlgebraicDevelopment
Techniques, initiated in 1982 as the workshop on Abstract Data Types, are a
prominent forum to present and discuss current research in that area.
The 15th International Workshop on Algebraic Development Techniques
(WADT 2001) took place in Genova, as a satellite of ETAPS 2001, on April
1–3, 2001, and was organized by Maura Cerioli and Gianna Reggio.
From 1991 to 1995 WADT workshops were held jointly with the General
WorkshopoftheESPRITBasicResearchWorkingGroupCOMPASS.Following
this tradition, the WADT 2001 was held jointly with the General Workshop of
the ESPRIT Working Group CoFI. The Common Framework Initiative, started
in 1995 and funded since 1998 as CoFI WG, is centered around the definition of
the Common Algebraic Specification Language (CASL).
The program started with a full day tutorial on the CASL, followed by 32
presentations,severalofthemontheCASLaswell,organizedinparallelsessions
during the following two days. The parallel sessions were devoted to: logics and
proofs, concurrent processes, institutions and categories, applications and case
studies, higher-order and parameterized specifications, static analysis, software
architectures, graph and transformation rules.
The main topics of the workshop were:
– algebraic specification
– other approaches to formal specification
– specification languages and methods
– term rewriting and proof systems
– specification development systems (concepts, tools, etc.)
The program committee invited submissions of full papers for possible inclusion
in this volume, on the basis of the abstracts and the presentations at WADT
2001.
All the submissions were subject to careful refereeing, and the selection of
papers was made following further discussion by the full program committee.
We are extremely grateful to all workshop participants, to the (other) mem-
bersoftheprogramcommittee,andtotheexternalrefereesfortheircontribution
to the scientific quality of the workshop and of this volume.
The WADT series is sponsored by IFIP WG1.3 on Foundations of System
Specification (see http://www.brics.dk/˜pdm/IFIP-WG1.3).
November 2001 Maura Cerioli and Gianna Reggio
Organization
Program Committee
Michel Bidoit (Cachan, France)
Maura Cerioli (Genova, Italy)
Hans-J¨org Kreowski (Bremen, Germany)
Peter Mosses, chair (Aarhus, Denmark)
Fernando Orejas (Barcelona, Spain)
Francesco Parisi-Presicce (Roma, Italy)
Gianna Reggio (Genova, Italy)
Donald Sannella (Edinburgh, Scotland)
Andrzej Tarlecki (Warsaw, Poland)
External Referees
Egidio Astesiano Manuel Koch
Marek Bednarczyk Mikolaj Konarski
Benjamin Blanc Alexander Kurz
Alexandre Boisseau
Sabine Kuske
Tomasz Borzyszkowski
Slawomir Lasota
Paolo Bottoni
Christoph Lu¨th
Paolo Cenciarelli
Dirk Pattinson
Hartmut Ehrig
Wies(cid:3)law Pawl(cid:3)owski
Steven Eker
Jean Goubault-Larrecq Jean-Claude Reynaud
Piotr Hoffman Markus Roggenbach
Sponsoring Institutions
CoFI (Common Framework Initiative), ESPRIT Working Group 29432.
DISI, Universita` degli Studi di Genova.
IFIP WG1.3 on Foundations of System Specification.
Table of Contents
Interactive Rule-Based Specification with an Application
to Visual Language Definition ....................................... 1
R. Bardohl, M. Große-Rhode, and M. Simeoni
Algebraic Abstractions ............................................. 21
M. Bidoit and A. Boisseau
Combining Logics: Parchments Revisited.............................. 48
C. Caleiro, P. Mateus, J. Ramos, A. Sernadas
Canonical Institutions of Behaviour .................................. 71
J.F. Costa and H. Lourenc¸o
The Lu¨beck Transformation System: A Transformation System
for Equational Higher Order Algebraic Specifications ................... 85
W. Dosch and S. Magnussen
On the Compatibility of Model and Model-Class Transformations ....... 109
M. Gajewsky and F. Parisi-Presicce
Verifying a Simple Pipelined Microprocessor Using Maude .............. 128
N.A. Harman
Verifying Architectural Specifications................................. 152
P. Hoffman
Geometric Modelling with CASL..................................... 176
F. Ledoux, A. Arnould, P. Le Gall, and Y. Bertrand
A Compositional Approach to Connector Construction ................. 201
A. Lopes, M. Wermelinger, and J.L. Fiadeiro
InstitutionIndependentStaticAnalysisforCasl ........................ 221
T. Mossakowski and B. Klin
Tight and Loose Semantics for Transformation Systems................. 238
F. Orejas, H. Ehrig, and E. Pino
Presentations for Abstract Context Institutions ........................ 256
W. Paw(cid:3)lowski
Programs, Proofs and Parametrized Specifications...................... 280
I. Poernomo, J.N. Crossley, and M. Wirsing
Towards Trustworthy Specifications I: Consistency Checks .............. 305
M. Roggenbach and L. Schr¨oder
X Table of Contents
The Common Framework Initiative for Algebraic Specification
and Development of Software: Recent Progress......................... 328
D. Sannella
Author Index ................................................. 345
Interactive Rule-Based Specification with an
Application to Visual Language Definition
Roswitha Bardohl1, Martin Große-Rhode1, and Marta Simeoni2
1 Institut fu¨r Softwaretechnik und Theoretische Informatik, TU Berlin,
{rosi,mgr}@cs.tu-berlin.de
2 Dipartimento di Informatica, Universit`a C`a Foscari di Venezia,
[email protected]
Abstract. Inarule-basedapproachthecomputationstepsofasystem
arespecifiedbyrulesthatcompletelydefinehowthesystem’sstatemay
change.Foropensystemsamoreliberalapproachisrequired,wherethe
state changes are only partly specified, and – interactively – other com-
ponents may contribute further information on how the transformation
is defined completely. In this paper we introduce a formal model for in-
teractive rule-based specifications, where states are modelled as partial
algebras and transformations are given by internal algebra rewritings
and arbitrary external components. As an application we discuss how
visual languages can be defined in this framework. Thereby the internal
(logical)representationsofvisualexpressionsaretransformedbyrewrit-
ing rules, whereas their layouts are obtained interactively by external
componentslikeaconstraintsolverorauserworkingwithadisplayand
a mouse.
1 Introduction
In a traditional rule-based specification of a system a set of rules is given to
describe the possible state changes of the system. Thereby the rules completely
describe the relation of the initial and final states of each transformation step.
Foropensystems,however,itismoreadequatetospecifytheeffectofatransfor-
mation step only partly by a rule. The transformation is determined completely
only in interaction with the environment the system is placed in. That means,
the impact of the environment on the local state changes has to be taken into
account.
In a software environment for a visual language, for example, there might
be an editor offering rules for creating items. Such an item would be offered
when the rule is applied, but not directly placed into the figure. The actual
position must be chosen (via a mouse click) by the user, or might be computed
byaconstraintsolverthatchoosesoneofthepossiblepositionsthatsatisfiesthe
given constraints. In both cases the rule applied by the rule-based part of the
system just yields the existence of the item, usually together with a predefined
shape or other attributes, whereas the remaining attributes – like the concrete
positionandsize–aresetexternally,bytheuser,theconstraintsolver,oranother
component.
M.CerioliandG.Reggio(Eds.):WADT/CoFI2001,LNCS2267,pp.1–20,2002.
(cid:2)c Springer-VerlagBerlinHeidelberg2002