Gurobi 5.6.3 (linux64) logging started Tue Oct 7 22:51:18 2014 Optimize a model with 16900 rows, 16771 columns and 66693 nonzeros Presolve time: 0.33s Presolved: 16900 rows, 16771 columns, 66693 nonzeros Variable types: 1 continuous, 16770 integer (16770 binary) Found heuristic solution: objective 1.2878479 Found heuristic solution: objective 1.0875181 Found heuristic solution: objective 1.0531214 Root relaxation: objective 1.130554e-01, 5509 iterations, 1.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.11306 0 1188 1.05312 0.11306 89.3% - 1s H 0 0 1.0522368 0.11306 89.3% - 1s H 0 0 0.2185222 0.11306 48.3% - 1s 0 0 0.11473 0 1044 0.21852 0.11473 47.5% - 2s 0 0 0.11473 0 1053 0.21852 0.11473 47.5% - 3s 0 0 0.11766 0 1122 0.21852 0.11766 46.2% - 3s 0 0 0.11775 0 1094 0.21852 0.11775 46.1% - 3s 0 0 0.11786 0 1103 0.21852 0.11786 46.1% - 3s 0 0 0.11786 0 1082 0.21852 0.11786 46.1% - 4s 0 0 0.11786 0 1018 0.21852 0.11786 46.1% - 4s H 0 0 0.2163132 0.11786 45.5% - 4s H 0 0 0.2085882 0.11786 43.5% - 4s 0 2 0.11790 0 985 0.20859 0.11790 43.5% - 4s 4 6 0.12091 2 1042 0.20859 0.11870 43.1% 886 5s H 27 27 0.2077005 0.12013 42.2% 477 6s H 54 54 0.2043331 0.12013 41.2% 397 6s H 81 77 0.2029907 0.12013 40.8% 302 6s H 108 87 0.1914564 0.12013 37.3% 294 7s H 143 110 0.1910162 0.12022 37.1% 271 7s H 143 108 0.1908379 0.12022 37.0% 271 7s * 156 92 5 0.1893753 0.12124 36.0% 292 8s Cutting planes: Gomory: 5 MIR: 1 Explored 157 nodes (64870 simplex iterations) in 8.41 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.893753492477e-01, best bound 1.893753492477e-01, gap 0.0%