Gurobi 5.6.3 (linux64) logging started Tue Oct 7 22:02:13 2014 Optimize a model with 13456 rows, 13341 columns and 53015 nonzeros Presolve time: 0.24s Presolved: 13456 rows, 13341 columns, 53015 nonzeros Variable types: 1 continuous, 13340 integer (13340 binary) Found heuristic solution: objective 1.1082254 Found heuristic solution: objective 0.8775800 Found heuristic solution: objective 0.8523414 Root relaxation: objective 1.165079e-01, 5134 iterations, 0.68 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.11651 0 1027 0.85234 0.11651 86.3% - 1s H 0 0 0.6375754 0.11651 81.7% - 1s H 0 0 0.2015937 0.11651 42.2% - 2s 0 0 0.13179 0 696 0.20159 0.13179 34.6% - 3s 0 0 0.13179 0 707 0.20159 0.13179 34.6% - 3s 0 0 0.15196 0 625 0.20159 0.15196 24.6% - 3s 0 0 0.15349 0 569 0.20159 0.15349 23.9% - 4s 0 0 0.15351 0 576 0.20159 0.15351 23.9% - 4s 0 0 0.15358 0 538 0.20159 0.15358 23.8% - 4s 0 0 0.15360 0 544 0.20159 0.15360 23.8% - 4s 0 0 0.15360 0 544 0.20159 0.15360 23.8% - 4s H 0 0 0.1969118 0.15360 22.0% - 4s H 0 0 0.1936734 0.15360 20.7% - 4s 0 2 0.15648 0 570 0.19367 0.15648 19.2% - 4s 27 17 0.19233 16 124 0.19367 0.16249 16.1% 225 5s H 136 7 0.1900435 0.18710 1.55% 85.1 5s Cutting planes: Gomory: 2 MIR: 46 Zero half: 4 Explored 144 nodes (35895 simplex iterations) in 5.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900435345199e-01, best bound 1.900435345199e-01, gap 0.0%