Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:51:21 2012 Optimize a model with 5555 rows, 149 columns and 11110 nonzeros Presolve removed 3992 rows and 0 columns Presolve time: 0.22s Presolved: 1563 rows, 149 columns, 11493 nonzeros Variable types: 0 continuous, 149 integer (149 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.868583e+01, 721 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 18.68583 0 147 7.00000 18.68583 167% - 0s H 0 0 10.0000000 18.68583 86.9% - 0s 0 0 18.14239 0 148 10.00000 18.14239 81.4% - 0s 0 0 17.98527 0 145 10.00000 17.98527 79.9% - 0s 0 0 17.91782 0 148 10.00000 17.91782 79.2% - 1s 0 0 17.88193 0 147 10.00000 17.88193 78.8% - 1s 0 0 17.86390 0 148 10.00000 17.86390 78.6% - 1s 0 0 17.86209 0 148 10.00000 17.86209 78.6% - 1s 0 0 17.86112 0 148 10.00000 17.86112 78.6% - 1s 0 0 17.86103 0 148 10.00000 17.86103 78.6% - 2s 0 0 17.86099 0 148 10.00000 17.86099 78.6% - 2s 0 2 17.86087 0 148 10.00000 17.86087 78.6% - 2s 256 170 12.48006 14 60 10.00000 16.69597 67.0% 94.5 5s 601 280 13.12826 12 148 10.00000 14.53259 45.3% 81.0 11s 637 306 13.50647 25 69 10.00000 14.53259 45.3% 92.5 15s 1292 299 12.10881 26 39 10.00000 13.77110 37.7% 82.8 20s 1657 250 12.58971 37 65 10.00000 12.69361 26.9% 76.7 25s Cutting planes: Clique: 54 Explored 2165 nodes (144664 simplex iterations) in 27.90 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%