WPTE 2026 (affiliated with FLoC 2026 in Lisbon, Portugal) 12th International Workshop on Rewriting Techniques for Program Transformations and Evaluation (19 July 2026) Webpage: https://wpte2026.github.io/ Early Registration by 1 June / Late Registration by 13 July --------------------------------------------------------------------------- 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. --------------------------------------------------------------------------- The workshop will have two invited talks, by: - Nada Amin, Harvard University - Nikos Tzevelekos, Queen Mary University of London (joint with GaLoP 2026) as well as six contributed presentations: - David B. Hulak, Arthur Freitas Ramos and Ruy J.G.B. de Queiroz: Sound Rewrites for Measurement-Bearing Expressions via Token-Sensitive Enclosure Semantics - Takumi Sato and Koji Nakazawa: A Cyclic Proof System for Trace Formula Implication with Least and Greatest Fixpoints - David Sabel and Manfred Schmidt-Schauß: Improvement Theory for Probabilistic Call-by-Need - Misaki Kojima and Naoki Nishida: On Comparing Python Programs Based on Differences in Rewrite Sequences to Support Grading Programming Exercises - Katarzyna Marek and Clément Pit Claudel: Tactic-driven code fusion - Ștefan Ciobâcă, K. Rustan M. Leino, Ștefan-Alexandru Mercas and Roxana-Mihaela Timon: An Interactive Proof Mode for Dafny Based on Back Translation of Verification Obligations --------------------------------------------------------------------------- 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