Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:37:02 2014 Optimize a model with 7751 rows, 3907 columns and 19220 nonzeros Presolve removed 62 rows and 0 columns Presolve time: 0.12s Presolved: 7689 rows, 3907 columns, 19158 nonzeros Variable types: 1 continuous, 3906 integer (3906 binary) Found heuristic solution: objective 0.8304686 Found heuristic solution: objective 0.8197806 Found heuristic solution: objective 0.7616841 Root relaxation: objective 6.434648e-03, 4687 iterations, 0.28 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00643 0 3126 0.76168 0.00643 99.2% - 0s H 0 0 0.7297352 0.00643 99.1% - 1s H 0 0 0.5298844 0.00643 98.8% - 1s H 0 0 0.5282476 0.00643 98.8% - 1s 0 0 0.01040 0 1892 0.52825 0.01040 98.0% - 2s 0 0 0.02145 0 1453 0.52825 0.02145 95.9% - 3s H 0 0 0.3760247 0.02145 94.3% - 3s 0 0 0.04817 0 625 0.37602 0.04817 87.2% - 4s 0 2 0.04921 0 622 0.37602 0.04921 86.9% - 6s H 1 2 0.3068314 0.04921 84.0% 1191 7s H 5 4 0.3058486 0.16413 46.3% 238 8s H 5 4 0.2945270 0.16413 44.3% 238 8s H 6 5 0.2795148 0.16513 40.9% 198 8s 12 9 0.16586 0 422 0.27951 0.16586 40.7% 99.2 10s H 14 9 0.2765005 0.16586 40.0% 85.1 11s H 14 8 0.2722707 0.16586 39.1% 85.1 11s H 42 23 0.2641502 0.18003 31.8% 314 12s * 57 24 34 0.2632628 0.18003 31.6% 247 12s H 71 21 0.2596758 0.18101 30.3% 207 12s * 77 13 21 0.2581027 0.23351 9.53% 200 12s * 83 7 19 0.2563980 0.24257 5.39% 196 12s Cutting planes: Gomory: 6 MIR: 5 Explored 91 nodes (46553 simplex iterations) in 13.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.563980220575e-01, best bound 2.563980220575e-01, gap 0.0%