UFO'07: Workshop on UnFOlding and partial order techniques

a satellite event of

Petri Nets 2007

Siedlce, Poland, Tuesday 26th of June, 2007


Call for Papers

Tutorial on Unfolding-Based Model Checking by Javier Esparza

Invited speakers

   Thomas Chatain
   Eric Fabre
   Claude Jard
   Victor Khomenko
   Maciej Koutny
   Walter Vogler
   Alex Yakovlev


The workshop proceedings (with the cover) are now available on-line.


The workshop presentations are now available on-line. 

08:50-09:00 Welcome
09:00-10:00 Tutorial Javier Esparza Unfolding-Based Model Checking
10:00-10:15 Coffee Break
10:15-11:00 Invited talk Walter Vogler Canonical Prefixes of Petri Net Unfoldings
11:00-11:45 Invited talk Eric Fabre Modular Processing
11:45-12:30 Invited talk Victor Khomenko Merged Processes of Petri Nets
12:30-13:30 Lunch
13:30-14:15 Invited talk Thomas Chatain On the Well-Foundedness of Adequate Orders
14:15-15:00 Invited talk Alex Yakovlev Use of Partial Orders for Analysis and Synthesis of Asynchronous Circuits
15:00-15:30 Coffee Break
15:30-16:15 Invited talk Maciej Koutny Branching Processes of High-Level Petri Nets and Model Checking of Mobile Systems
16:15-17:00 Invited talk Claude Jard Symbolic Unfoldings of Timed Models
17:00-17:30 Regular talk Paolo Baldan
Andrea Corradini
Barbara Konig
Stefan Schwoon
McMillan's Complete Prefix for Contextual Nets
17:30-18:00 Regular talk Blai Bonet
Patrik Haslum
Sarah Hickmott
Sylvie Thiebaux
Directed Unfolding of Petri Nets


The scope of the workshop is the theory and applications of Petri net unfoldings and related partial-order formalisms.

The unfolding technique was developed some time ago and is now well established to analyse concurrent systems. Some recent developments make it a really alive research field, and open the way to a broad range of new applications. Let us mention for example:

The objective of this workshop is twofold:
  1. To bring together researchers working on different aspects of the unfolding theory, and
  2. To popularise unfoldings in the research and industry communities.
To achieve these objectives, an important part of this workshop is devoted to invited and tutorial talks. The remaining time slots are reserved to original contributions on the subject, focusing on research aspects, applications or tool developments.

Notice: some contributors to workshops will be invited to make a revised version of their paper, to be included in joint post-proceedings, published by Springer-Verlag in LNCS.

Program Committee

Jean-Michel Couvreur
Javier Esparza
Eric Fabre (co-chair)
Keijo Heljanko
Claude Jard
Victor Khomenko (co-chair)
Maciej Koutny
Christian Stehno
Walter Vogler
Alex Yakovlev 


Eric Fabre
INRIA/IRISA, Rennes, France
E-mail: eric.fabre@irisa.fr

Victor Khomenko
School of Computing Science, University of Newcastle upon Tyne, UK
E-mail: Victor.Khomenko@ncl.ac.uk


Registration & Accommodation

Please register for the UFO workshop at the registration site of the Petri Nets 2007 conference at


Note that if you only want to attend the UFO workshop then you have to register only for it, i.e. you do not have to pay for the full 5 day programme.

Information about how to get to Siedlce and to the conference site and about hotels can be found at



The program committee invites submissions of papers (up to 15 pages). The papers must be in English and contain original contributions that have not been published or submitted to other conferences/journals in parallel with this workshop.

Papers are to be submitted through the easychair portal:


Submission Guidelines

Please use the LaTeX document class llncs.cls for your contributions. An up-to-date version of llncs.cls together with the documentation can be found at


The submissions will be evaluated by the programme committee. Accepted papers will be included in the workshop proceedings which will be available at the workshop. Some of the best papers from the workshop will be invited for publication in a volume of a new journal subline of Lecture Notes in Computer Science entitled "Transactions on Petri Nets and Other Models of Concurrency" (ToPNoC). The papers are expected to be thoroughly revised and they will go through a totally new round of reviewing as is standard practice for journal papers.



For further information on UFO'07 or in
case of any problems please contact

Victor Khomenko