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              LOPSTR 2019: Third Call for Papers 
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** Please note that paper submission deadlines have been extended as follows:

Abstract submission: June 25, 2019
Paper/Extended abstract submission: June 30, 2019 (AoE, UTC-12) **

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                 29th International Symposium on
         Logic-Based Program Synthesis and Transformation
                           LOPSTR 2019

          http://www.cs.unibo.it/projects/lopstr19/

            Porto, Portugal, October 8-10, 2019
    (co-located with the Symposium on Formal Methods, FM'19 
                  and a part of the FM Week)


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.

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

Important Dates

Abstract submission: June 25, 2019 (**new**)
Paper/Extended abstract submission: June 30, 2019 AoE (**new**)
Notification: July 24, 2018
Camera-ready (for electronic pre-proceedings): August 7, 2019
Symposium: October 8-10, 2019


Submission Guidelines 

Authors  should submit  an electronic  copy of  the paper  (written in
English) in  PDF, formatted in  the Lecture Notes in  Computer Science
style.  Submissions cannot exceed 15 pages
including references but excluding well-marked appendices not intended
for publication.  Papers should be submitted  via  the  Easychair  
submission website  for  LOPSTR  2019.


Best Paper Award and Prize

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).


Proceedings 

The formal  post-conference proceedings will be  published by Springer
in the  Lecture Notes in Computer  Science series. Full papers  can be
directly  accepted  for  publication  in the  formal  proceedings,  or
accepted  only for  presentation  at the  symposium  and inclusion  in
informal  proceedings. 

After the symposium, a selection of the best papers might  be invited for 
submission to a special issue of a journal. 

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)