Gurobi 5.0.1 (linux64) logging started Fri Nov 16 02:06:04 2012 Optimize a model with 7408 rows, 992 columns and 23062 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.09s Presolved: 7406 rows, 990 columns, 26249 nonzeros Variable types: 0 continuous, 990 integer (990 binary) Found heuristic solution: objective 31.0000000 Root relaxation: objective 3.450000e+00, 6267 iterations, 0.41 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.45000 0 865 31.00000 3.45000 88.9% - 1s H 0 0 29.0000000 3.45000 88.1% - 1s 0 0 6.00000 0 123 29.00000 6.00000 79.3% - 2s H 0 0 24.0000000 6.00000 75.0% - 2s H 0 0 8.0000000 6.00000 25.0% - 2s 0 0 6.00000 0 132 8.00000 6.00000 25.0% - 3s 0 0 6.00000 0 112 8.00000 6.00000 25.0% - 3s 0 0 6.00000 0 161 8.00000 6.00000 25.0% - 3s 0 0 6.00000 0 132 8.00000 6.00000 25.0% - 3s 0 0 6.00000 0 155 8.00000 6.00000 25.0% - 4s 0 0 6.00000 0 129 8.00000 6.00000 25.0% - 4s 0 0 6.00000 0 152 8.00000 6.00000 25.0% - 4s 0 0 6.04396 0 165 8.00000 6.04396 24.5% - 4s 0 0 6.06662 0 424 8.00000 6.06662 24.2% - 4s 0 0 6.08566 0 214 8.00000 6.08566 23.9% - 4s 0 0 6.09976 0 392 8.00000 6.09976 23.8% - 4s 0 0 6.10399 0 404 8.00000 6.10399 23.7% - 4s 0 0 6.10579 0 198 8.00000 6.10579 23.7% - 5s 0 0 6.10786 0 191 8.00000 6.10786 23.7% - 5s 0 0 6.11205 0 195 8.00000 6.11205 23.6% - 5s 0 0 6.11443 0 195 8.00000 6.11443 23.6% - 5s 0 0 6.11527 0 196 8.00000 6.11527 23.6% - 5s 0 0 6.11582 0 196 8.00000 6.11582 23.6% - 5s 0 0 6.11738 0 194 8.00000 6.11738 23.5% - 5s 0 0 6.11847 0 199 8.00000 6.11847 23.5% - 5s 0 0 6.11861 0 203 8.00000 6.11861 23.5% - 5s 0 0 6.11946 0 199 8.00000 6.11946 23.5% - 5s 0 0 6.11973 0 197 8.00000 6.11973 23.5% - 5s 0 0 6.11974 0 195 8.00000 6.11974 23.5% - 5s 0 0 6.11974 0 195 8.00000 6.11974 23.5% - 5s 0 0 6.11974 0 195 8.00000 6.11974 23.5% - 5s 0 2 6.11975 0 195 8.00000 6.11975 23.5% - 6s * 10 2 7 7.0000000 7.00000 0.0% 218 6s Cutting planes: Clique: 26 Zero half: 49 Explored 11 nodes (31484 simplex iterations) in 6.93 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%