Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:53:20 2014 Optimize a model with 13204 rows, 6643 columns and 32805 nonzeros Presolve removed 81 rows and 0 columns Presolve time: 0.13s Presolved: 13123 rows, 6643 columns, 32724 nonzeros Variable types: 1 continuous, 6642 integer (6642 binary) Found heuristic solution: objective 0.8569266 Found heuristic solution: objective 0.8458014 Found heuristic solution: objective 0.6690674 Root relaxation: objective 5.336810e-03, 7379 iterations, 0.77 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00534 0 4521 0.66907 0.00534 99.2% - 1s H 0 0 0.4148368 0.00534 98.7% - 2s 0 0 0.00847 0 2311 0.41484 0.00847 98.0% - 3s 0 0 0.01536 0 2032 0.41484 0.01536 96.3% - 4s H 0 0 0.3759298 0.01536 95.9% - 4s H 0 0 0.3716760 0.01536 95.9% - 4s 0 0 0.01779 0 1613 0.37168 0.01779 95.2% - 4s 0 0 0.02511 0 1632 0.37168 0.02511 93.2% - 5s 0 0 0.02515 0 1653 0.37168 0.02515 93.2% - 5s 0 0 0.02515 0 1442 0.37168 0.02515 93.2% - 5s H 0 0 0.3500017 0.02515 92.8% - 5s H 0 0 0.3381474 0.02515 92.6% - 7s H 0 0 0.2882906 0.02515 91.3% - 7s 0 2 0.03268 0 879 0.28829 0.03268 88.7% - 7s H 27 27 0.2687956 0.04610 82.9% 237 8s H 54 40 0.2427313 0.08645 64.4% 174 8s * 80 56 32 0.2369071 0.08645 63.5% 147 8s H 81 52 0.2332252 0.08645 62.9% 145 8s * 102 65 27 0.2273010 0.10018 55.9% 123 8s * 131 84 26 0.2272245 0.12070 46.9% 112 8s H 135 86 0.2251818 0.12070 46.4% 110 8s * 139 83 29 0.2207083 0.12070 45.3% 108 8s * 148 74 5 0.2205431 0.14023 36.4% 113 8s * 150 69 6 0.2168471 0.14023 35.3% 112 8s * 161 66 8 0.2166914 0.14318 33.9% 118 9s * 182 55 9 0.2166450 0.16870 22.1% 128 9s * 183 53 9 0.2156372 0.16870 21.8% 128 9s Cutting planes: Gomory: 38 Implied bound: 15 MIR: 673 Explored 237 nodes (65426 simplex iterations) in 9.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.156371773563e-01, best bound 2.156371773563e-01, gap 0.0%