====================================================================== 12th International Satisfiability Modulo Theories Competition (SMT-COMP'17) July 23, 2017 Heidelberg, Germany CALL FOR COMMENTS CALL FOR BENCHMARKS PRELIMINARY CALL FOR SOLVERS ====================================================================== SMT-COMP is the annual competition among Satisfiability Modulo Theories (SMT) solvers. The goals of SMT-COMP are to spur solver advances, collect benchmarks, and encourage adoption of the SMT-LIB standard, through friendly competition. SMT-COMP'17 will end in time to be described and the results announced at the SMT Workshop (July 22-23), which is affiliated with the International Conference on Computer-Aided Verification (CAV 2017). SMT-COMP'17 is organized under the direction of the SMT Steering committee. The organizing team for SMT-COMP'17 is . Matthias Heizmann - University of Freiburg, Germany . Giles Reger - University of Manchester, UK . Tjark Weber - Uppsala University, Sweden This is a call for three things: CALL FOR COMMENTS: The organizing team is preparing the schedule and rules for 2017. Any comments you may have to improve the competition over past years or to redirect its focus are welcome and will be considered by the team. We particularly appreciate comments received until *** March 31, 2017. *** For SMT-COMP'17, we are especially interested in comments regarding: - Benchmarks with unknown status: Previous SMT-COMPs have only used benchmarks whose status (sat/unsat) was known. One might argue that this favors imitation of existing solvers over innovation. Should benchmarks with unknown status be used in the competition? If so, how should answers for such benchmarks be scored? Can scoring for one solver remain independent of the answers given by other solvers, or should disagreements between solvers lead to negative scores for a solver? - Benchmark weighting: To avoid over-representation of certain (large) benchmark families, a weighting scheme for benchmarks was introduced in 2016. This causes division scores to be real numbers rather than simply an integer indicating the number of benchmarks solved, and the winning solver in a division is (intentionally) no longer necessarily the solver that solved the largest number of benchmarks. Do the methodological benefits of this weighting scheme justify the increased complexity in interpreting division scores? - Scope: The new (draft) version 2.6 of the SMT-LIB standard includes support for algebraic datatypes. Are corresponding benchmarks and sufficiently stable solver implementations available for SMT-COMP to feature an (experimental) datatype division in 2017? Should the scope or emphasis of the competition be adapted in other ways? CALL FOR BENCHMARKS: The competition is enhanced by new sets of benchmarks to add to those already in use (and used in past competitions). A selection of benchmarks in various categories is used for the competition (according to rules that are currently being revised). If you have benchmarks that you think would be useful to SMT-LIB and SMT-COMP (and may be made public), please let us know as soon as possible, even if the material is not quite ready. We will work in close cooperation with the SMT-LIB maintainers to integrate such benchmarks into the SMT-LIB in time to be taken into account for the competition. The deadline for benchmarks to be used in the 2017 competition will be announced when the schedule and rules are finalized. PRELIMINARY CALL FOR SOLVERS: A submission deadline for solvers will be announced along with the rules. However, it is useful to the organizing team to know in advance which and how many solvers may be entering. Thus we request that you let us know at your earliest convenience if you think you may be submitting one or more solvers to SMT-COMP'17; particularly if you have not submitted a solver before, or if you think there may be unusual circumstances. COMMUNICATION: The competition web-site will be at www.smtcomp.org. Public email regarding the competition may be sent to smt-comp@cs.nyu.edu. Announcements will be sent on both smt-comp@cs.nyu.edu and smt-lib@cs.nyu.edu. Non-confidential email to the organizers may be sent to smtcomp-discussion@lists.sourceforge.net. Sincerely, The organizing team