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Sun 20 - Fri 25 October 2019 Athens, Greece
Wed 23 Oct 2019 14:00 - 14:30 at Templars - Onward! Papers 2 Chair(s): Hidehiko Masuhara

Relational model finding is a successful technique which has been used in a wide range of problems during the last decade. This success is partly due to the fact that many problems contain relational structure which can be explored using relational model finders. Although these model finders allow for the exploration of such structures they often struggle with incorporating the non-relational elements.

In this paper we introduce AlleAlle, a method and language that integrates reasoning on both relational structure and non-relational elements —the data— of a problem. By combining first order logic with Codd’s relational algebra, transitive closure, and optimization criteria, we obtain a rich input language for expressing constraints on both relational and scalar values.

We present the semantics of AlleAlle and the translation of AlleAlle specifications to SMT constraints, and use the off-the-shelf SMT solver Z3 to find solutions. We evaluate AlleAlle by comparing its performance with Kodkod, a state-of-the-art relational model finder, and by encoding a solution to the optimal package resolution problem. Initial benchmarking show that although the translation times of AlleAlle can be improved, the resulting SMT constraints can efficiently be solved by the underlying solver.

Wed 23 Oct

Displayed time zone: Beirut change

14:00 - 15:30
Onward! Papers 2Onward! Papers at Templars
Chair(s): Hidehiko Masuhara Tokyo Institute of Technology
AlleAlle: Bounded Relational Model Finding with Unbounded Data
Onward! Papers
Jouke Stoel CWI, Tijs van der Storm CWI & University of Groningen, Netherlands, Jurgen Vinju CWI, Netherlands
Link to publication DOI Pre-print
Active Learning for Software Engineering
Onward! Papers
José Pablo Cambronero MIT, Thurston HY Dang MIT, Nikos Vasilakis MIT CSAIL, USA, Jiasi Shen Massachusetts Institute of Technology, Jerry Wu MIT, Martin C. Rinard MIT