Gurobi 5.0.1 (linux64) logging started Mon Nov 19 08:18:33 2012 Optimize a model with 6018 rows, 154 columns and 12036 nonzeros Presolve removed 4395 rows and 0 columns Presolve time: 0.25s Presolved: 1623 rows, 154 columns, 12073 nonzeros Variable types: 0 continuous, 154 integer (154 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.896061e+01, 697 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 18.96061 0 153 6.00000 18.96061 216% - 0s H 0 0 7.0000000 18.96061 171% - 0s H 0 0 8.0000000 18.96061 137% - 0s 0 0 18.59205 0 153 8.00000 18.59205 132% - 0s H 0 0 9.0000000 18.59205 107% - 0s 0 0 18.52941 0 153 9.00000 18.52941 106% - 0s 0 0 18.40222 0 154 9.00000 18.40222 104% - 1s 0 0 18.30679 0 153 9.00000 18.30679 103% - 1s 0 0 18.26953 0 153 9.00000 18.26953 103% - 1s 0 0 18.22046 0 154 9.00000 18.22046 102% - 1s 0 0 18.20186 0 153 9.00000 18.20186 102% - 1s H 0 0 10.0000000 18.20186 82.0% - 1s 0 0 18.16911 0 154 10.00000 18.16911 81.7% - 2s 0 0 18.13964 0 154 10.00000 18.13964 81.4% - 2s 0 0 18.12870 0 153 10.00000 18.12870 81.3% - 2s 0 0 18.11807 0 153 10.00000 18.11807 81.2% - 2s 0 0 18.11174 0 153 10.00000 18.11174 81.1% - 3s 0 0 18.10448 0 154 10.00000 18.10448 81.0% - 3s 0 0 18.10400 0 154 10.00000 18.10400 81.0% - 3s 0 0 18.10159 0 154 10.00000 18.10159 81.0% - 3s 0 0 18.09693 0 154 10.00000 18.09693 81.0% - 3s 0 0 18.08502 0 154 10.00000 18.08502 80.9% - 4s 0 0 18.07897 0 154 10.00000 18.07897 80.8% - 4s 0 0 18.07650 0 154 10.00000 18.07650 80.8% - 4s 0 0 18.07264 0 154 10.00000 18.07264 80.7% - 4s 0 0 18.07185 0 154 10.00000 18.07185 80.7% - 4s 0 0 18.07148 0 154 10.00000 18.07148 80.7% - 5s 0 0 18.07144 0 154 10.00000 18.07144 80.7% - 5s 0 2 18.07123 0 154 10.00000 18.07123 80.7% - 5s 385 243 11.80633 20 61 10.00000 16.23535 62.4% 89.4 10s 763 311 12.03166 6 45 10.00000 14.18655 41.9% 80.3 15s 903 323 12.03443 23 154 10.00000 13.83290 38.3% 76.5 20s 939 349 13.30539 23 72 10.00000 13.83290 38.3% 91.9 25s 1360 368 11.71900 11 41 10.00000 13.83290 38.3% 97.4 30s 1836 269 cutoff 20 10.00000 13.07996 30.8% 85.2 35s 2115 236 cutoff 30 10.00000 12.42345 24.2% 80.4 40s Cutting planes: Clique: 78 Explored 2558 nodes (184149 simplex iterations) in 43.30 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%