OVERVIEW

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The aim of the LOPSTR series is to stimulate and promote international research and collaboration on logic-based program development. LOPSTR is open to contributions in logic-based program development in any language paradigm. LOPSTR has a reputation for being a lively, friendly forum for presenting and discussing work in progress. Formal proceedings are produced only after the symposium so that authors can incorporate this feedback in the published papers. 
The 29th International Symposium on Logic-based Program Synthesis and Transformation (LOPSTR 2019) will be held at the Porto, Portugal. Previous symposia were held in Namur, Edinburgh, Siena, Canterbury, Madrid, Leuven, Odense, Hagenberg, Coimbra, Valencia, Lyngby, Venice, London, Verona, Uppsala, Madrid, Paphos, London, Venice, Manchester, Leuven, Stockholm, Arnhem, Pisa, Louvain-la-Neuve, Manchester and Frankfurt. LOPSTR 2019 will be co-located with the Symposium on Formal Methods, FM'19 and a part of the FM Week. 
Topics of interest cover all aspects of logic-based program development, all stages of the software life cycle, and issues of both programming-in-the-small and programming-in-the-large. This year LOPSTR extends its traditional topics to include also logic-based program development based on integration of sub-symbolic and symbolic models, on machine learning techniques and on differential semantics. Both full papers and extended abstracts describing applications in all these areas are especially welcome. Contributions are welcome on all aspects of logic-based program development, including, but not limited to: synthesis, transformation, specialization, composition, optimization, inversion, specification, analysis and verification, testing and certification, program and model manipulation, machine learning for program development, integration of sub-symbolic and symbolic models, differential semantics, transformational techniques in SE, applications and tools. 
Survey papers that present some aspects of the above topics from a new perspective, and application papers that describe experience with industrial applications are also welcome. 
Papers must describe original work, be written and presented in English, and must not substantially overlap with papers that have been published or that are simultaneously submitted to a journal, conference, or workshop with refereed proceedings. Work that already appeared in unpublished or informally published workshop proceedings may be submitted (please contact the PC chair in case of questions).

PROGRAM

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Invited Speakers

John Gallagher - Roskilde University, Denmark 
Naoki Kobayashi - The University of Tokyo, Japan (joint with PPDP) 
German Vidal - Polytechnic University of Valencia, Spain (joint with PPDP) 

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Sabine Broda - University of Porto, Portugal 
Manuel Carro - Technical University of Madrid and IMDEA, Spain 
Ugo Dal Lago - University of Bologna, Italy 
Daniel De Schreye - KU Leuven, Belgium 
Santiago Escobar - Polytechnic University of Valencia, Spain 
Moreno Falaschi - University of Siena, Italy 
Laurent Fribourg - CNRS, France 
Maurizio Gabbrielli - (Chair) University of Bologna, Italy 
Arnaud Gotlieb - SIMULA Research Laboratory, Norway 
Gopal Gupta - The University of Texas at Dallas, U.S.A 
Andy King - University of Kent, U.K. 
Herbert Kuchen - University of Muenster, Germany 
Jacopo Mauro - University of Southern Denmark, Denmark 
Hernan Melgratti - University of Buenos Aires, Argentina 
Maria Chiara Meo - University G. D'Annunzio, Chieti Pescara, Italy 
Carlos Olarte - Federal University of Rio Grande do Norte, Brazil 
Hirohisa Seki - Nagoya Institute of Technology, Japan 
Caterina Urban - INRIA, France 
Herbert Wiklicky - Imperial College London, U.K. 

IMPORTANT DATES

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SUBMISSION GUIDELINES

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Authors should submit an electronic copy of the paper (written in English) in PDF, formatted in the Lecture Notes in Computer Science style. Each submission must include on its first page the paper title; authors and their affiliations; contact author's email; abstract; and three to four keywords which will be used to assist the PC in selecting appropriate reviewers for the paper. Page numbers (and, if possible, line numbers) should appear on the manuscript to help the reviewers in writing their report. So, for LaTeX, we recommend that authors use:

\pagestyle{plain}
\usepackage{lineno}
\linenumbers

Submissions cannot exceed 15 pages including references but excluding well-marked appendices not intended for publication. Reviewers are not required to read the appendices, and thus papers should be intelligible without them. Papers should be submitted via the Easychair submission website for LOPSTR 2019 - Submission link on Easychair.

BEST PAPER AWARD AND PRIZE

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A best paper award will be granted, which will include a 500 EUR prize provided by Springer. This award will be given to the best paper submitted to the conference, based on the relevance, originality, and technical quality. The program committee may split the award among two or more papers, also considering authorship (e.g., student paper).