WPTE 2026 (affiliated with FLoC 2026 and FSCD 2026 in Lisbon, Portugal) 12th International Workshop on Rewriting Techniques for Program Transformations and Evaluation (19 July 2026) Webpage: https://wpte2026.github.io/ Submission: https://submissions.floc26.org/wpte/ Deadline: 22 April 2026 --------------------------------------------------------------------------- The aim of WPTE is to bring together researchers working on program transformations, evaluation, and operationally-based programming language semantics, using rewriting methods, in order to share the techniques and recent developments and to exchange ideas to encourage further activation of research in this area. Topics of Interest --------------------------------------------------------------------------- * Correctness of program transformations, optimizations and translations. * Program transformations for proving termination, confluence, and other properties. * Correctness of evaluation strategies. * Operational semantics of programs, operationally-based program equivalences such as contextual equivalences and bisimulations. * Cost-models for arguing about the optimizing power of transformations and the costs of evaluation. * Program transformations for verification and theorem proving purposes. * Translation, simulation, equivalence of programs with different formalisms, and evaluation strategies. * Program transformations for applying rewriting techniques to programs in specific programming languages. * Program transformations for program inversions and program synthesis. * Program transformation and evaluation for Haskell and rewriting. * Rewriting-based transformations for bidirectional programming and reversible computation. Submission Guidelines --------------------------------------------------------------------------- For the paper submission deadline, a regular paper or extended abstract of at most 10 pages is required. WPTE 2026 accepts submissions in three categories: * Regular paper, reporting on completed work that has not yet been formally published and is not under submission for formal publication at another venue (journal, conference, workshop with formal proceedings). * Work-in-progress extended abstract, reporting on work in progress. * Presentation-only extended abstract, a short version of a paper currently submitted to or formally published at another venue. The program committee will select the presentations for the workshop based on the submissions. All selected contributions will be included in the informal proceedings distributed to the workshop participants. One author of each accepted contribution is expected to present it at the workshop in person. Submissions must be prepared in LaTeX using the EPTCS macro package. All submissions are to be made via: https://submissions.floc26.org/wpte/ Post-Proceedings or Journal Special Issue --------------------------------------------------------------------------- For the 2020-2025 editions, papers from WPTE were selected for post-submission and eventual publication in JLAMP special issues. We will discuss, also based on interest expressed by authors at the workshop, whether to arrange a special issue or other formal proceedings for regular papers and completed work-in-progress extended abstracts selected from this year's edition. Important Dates --------------------------------------------------------------------------- Submission of regular papers and extended abstracts: 22 April 2026 (AoE) Notification of acceptance: 25 May 2026 Early Registration for the workshop: 1 June 2026 Final version for informal proceedings: 29 June 2026 Workshop: 19 July 2026 Submission to post-proceedings/special issue: autumn 2026 (tbd) Program Committee --------------------------------------------------------------------------- Martin Avanzini, Inria Sophia Antipolis Carsten Fuhs (co-chair), Birkbeck University of London Jan-Christoph Kassing, RWTH Aachen University Thomas Kœhler, ICube Lab, CNRS, Université de Strasbourg Misaki Kojima, Nagoya University Rubén Rubio, Universidad Complutense de Madrid Traian Şerbănuţă, University of Bucharest Germán Vidal, Universitat Politècnica de València Janis Voigtländer (co-chair), University of Duisburg-Essen Contact --------------------------------------------------------------------------- Please direct questions to: c.fuhs AT bbk.ac.uk and janis.voigtlaender AT uni-due.de