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In the Industrial Modelling Competition at CP 2015, only a subset of the instances were used. Results are shown in the Table below, giving the best lower bound, the best upper bound and and indication if the solution is optimal. Results were obtained by Philippe Laborie with IBM’s CP Optimizer. The OPL program used is shown in the model section.

Instance LB UB OPTIMAL
t40m10r3-2.pl 1725 1725 *
t50m10r3-9.pl 7279 7279 *
t100m50r10-11.pl 4970 4970 *
t500m50r5-5.pl 33848 33848 *
t500m100r10-1.pl 48814 48814 *
t500m100r10-2.pl 38303 39130
t500m100r10-3.pl 35459 36018
t500m100r10-4.pl 37658 37921
t500m100r10-5.pl 33080 33338
t500m100r10-6.pl 41078 41078 *
t500m100r10-7.pl 38921 39790
t500m100r10-8.pl 42455 43199
t500m100r10-9.pl 38758 39083
t500m100r10-10.pl 42308 42308 *