Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:57:13 2012 Optimize a model with 5614 rows, 150 columns and 11228 nonzeros Presolve removed 4039 rows and 0 columns Presolve time: 0.23s Presolved: 1575 rows, 150 columns, 11602 nonzeros Variable types: 0 continuous, 150 integer (150 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.859601e+01, 723 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 18.59601 0 148 8.00000 18.59601 132% - 0s H 0 0 9.0000000 18.59601 107% - 0s 0 0 17.98670 0 149 9.00000 17.98670 100% - 0s 0 0 17.82506 0 150 9.00000 17.82506 98.1% - 0s 0 0 17.77450 0 150 9.00000 17.77450 97.5% - 1s 0 0 17.73466 0 150 9.00000 17.73466 97.1% - 1s 0 0 17.71556 0 149 9.00000 17.71556 96.8% - 1s 0 0 17.71171 0 149 9.00000 17.71171 96.8% - 1s 0 0 17.70536 0 150 9.00000 17.70536 96.7% - 1s 0 0 17.70268 0 150 9.00000 17.70268 96.7% - 2s 0 0 17.69917 0 150 9.00000 17.69917 96.7% - 2s 0 0 17.69586 0 150 9.00000 17.69586 96.6% - 2s 0 0 17.69319 0 150 9.00000 17.69319 96.6% - 2s 0 0 17.69131 0 150 9.00000 17.69131 96.6% - 2s 0 0 17.68510 0 150 9.00000 17.68510 96.5% - 3s 0 0 17.68126 0 150 9.00000 17.68126 96.5% - 3s 0 0 17.68090 0 150 9.00000 17.68090 96.5% - 3s 0 0 17.68054 0 150 9.00000 17.68054 96.5% - 3s 0 0 17.68053 0 150 9.00000 17.68053 96.5% - 3s 0 2 17.67948 0 150 9.00000 17.67948 96.4% - 4s 48 50 12.64469 48 95 9.00000 17.67948 96.4% 112 5s H 491 261 10.0000000 15.92648 59.3% 77.3 8s 601 296 14.57151 31 150 10.00000 15.08391 50.8% 77.8 13s H 606 283 11.0000000 15.08391 37.1% 77.1 13s 611 289 15.08391 14 148 11.00000 15.08391 37.1% 78.6 15s 871 298 cutoff 20 11.00000 14.23715 29.4% 97.1 20s Cutting planes: Clique: 69 Explored 1254 nodes (102009 simplex iterations) in 21.68 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%