Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:34:20 2014 Optimize a model with 6556 rows, 3307 columns and 16245 nonzeros Presolve removed 57 rows and 0 columns Presolve time: 0.13s Presolved: 6499 rows, 3307 columns, 16188 nonzeros Variable types: 1 continuous, 3306 integer (3306 binary) Found heuristic solution: objective 1.0906939 Found heuristic solution: objective 0.9648737 Found heuristic solution: objective 0.9401042 Root relaxation: objective 6.253728e-03, 4692 iterations, 0.27 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00625 0 3109 0.94010 0.00625 99.3% - 0s H 0 0 0.5188190 0.00625 98.8% - 0s 0 0 0.01157 0 1594 0.51882 0.01157 97.8% - 2s 0 0 0.02230 0 1306 0.51882 0.02230 95.7% - 3s H 0 0 0.4934121 0.02230 95.5% - 3s H 0 0 0.4378693 0.02230 94.9% - 3s 0 0 0.03677 0 709 0.43787 0.03677 91.6% - 3s H 0 0 0.4111672 0.03677 91.1% - 3s 0 1 0.03688 0 709 0.41117 0.03688 91.0% - 5s H 1 1 0.3372242 0.03688 89.1% 1515 6s H 7 4 0.3216567 0.17839 44.5% 216 7s H 17 10 0.3214591 0.18141 43.6% 89.1 9s H 17 10 0.3200961 0.18141 43.3% 89.1 9s 19 13 0.18222 14 372 0.32010 0.18222 43.1% 658 10s H 27 14 0.2928941 0.18420 37.1% 568 11s * 28 13 18 0.2924064 0.18425 37.0% 557 11s * 39 14 24 0.2867536 0.23125 19.4% 435 11s H 45 7 0.2830639 0.24394 13.8% 388 11s Cutting planes: Gomory: 4 MIR: 3 Zero half: 2 Explored 53 nodes (43609 simplex iterations) in 11.55 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.830638538220e-01, best bound 2.830638538220e-01, gap 0.0%