Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:18:00 2012 Optimize a model with 4675 rows, 137 columns and 9350 nonzeros Presolve removed 3408 rows and 0 columns Presolve time: 0.17s Presolved: 1267 rows, 137 columns, 9135 nonzeros Variable types: 0 continuous, 137 integer (137 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.750726e+01, 581 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17.50726 0 131 7.00000 17.50726 150% - 0s H 0 0 8.0000000 17.50726 119% - 0s 0 0 17.02878 0 135 8.00000 17.02878 113% - 0s H 0 0 9.0000000 17.02878 89.2% - 0s 0 0 16.86178 0 136 9.00000 16.86178 87.4% - 0s 0 0 16.76350 0 136 9.00000 16.76350 86.3% - 0s 0 0 16.74275 0 136 9.00000 16.74275 86.0% - 1s 0 0 16.73523 0 136 9.00000 16.73523 85.9% - 1s 0 0 16.73095 0 136 9.00000 16.73095 85.9% - 1s 0 0 16.71927 0 135 9.00000 16.71927 85.8% - 1s 0 0 16.71001 0 137 9.00000 16.71001 85.7% - 1s 0 0 16.70648 0 136 9.00000 16.70648 85.6% - 2s H 0 0 10.0000000 16.70648 67.1% - 2s 0 0 16.70303 0 136 10.00000 16.70303 67.0% - 2s 0 0 16.69945 0 137 10.00000 16.69945 67.0% - 2s 0 0 16.69443 0 137 10.00000 16.69443 66.9% - 2s 0 0 16.68849 0 137 10.00000 16.68849 66.9% - 2s 0 0 16.68394 0 137 10.00000 16.68394 66.8% - 2s 0 0 16.68196 0 137 10.00000 16.68196 66.8% - 3s 0 0 16.67986 0 137 10.00000 16.67986 66.8% - 3s 0 0 16.67783 0 137 10.00000 16.67783 66.8% - 3s 0 0 16.67702 0 137 10.00000 16.67702 66.8% - 3s 0 0 16.67691 0 137 10.00000 16.67691 66.8% - 3s 0 2 16.67668 0 137 10.00000 16.67668 66.8% - 4s 104 82 13.27459 3 68 10.00000 16.27952 62.8% 87.0 5s * 475 83 6 11.0000000 13.17419 19.8% 80.4 7s Cutting planes: Clique: 141 Explored 559 nodes (41639 simplex iterations) in 7.83 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%