Gurobi 5.0.1 (linux64) logging started Fri Nov 16 02:39:04 2012 Optimize a model with 9281 rows, 1190 columns and 28864 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.10s Presolved: 9279 rows, 1188 columns, 30514 nonzeros Variable types: 0 continuous, 1188 integer (1188 binary) Found heuristic solution: objective 34.0000000 Root relaxation: objective 3.361702e+00, 7914 iterations, 0.65 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.36170 0 1096 34.00000 3.36170 90.1% - 1s H 0 0 31.0000000 3.36170 89.2% - 1s 0 0 4.00000 0 121 31.00000 4.00000 87.1% - 2s H 0 0 30.0000000 4.00000 86.7% - 2s 0 0 4.66859 0 1013 30.00000 4.66859 84.4% - 2s H 0 0 21.0000000 4.66859 77.8% - 2s 0 0 4.71269 0 969 21.00000 4.71269 77.6% - 3s H 0 0 9.0000000 4.71269 47.6% - 3s 0 0 4.71269 0 969 9.00000 4.71269 47.6% - 3s 0 0 4.71269 0 882 9.00000 4.71269 47.6% - 4s 0 2 4.71273 0 882 9.00000 4.71273 47.6% - 6s H 27 19 8.0000000 5.00000 37.5% 314 8s 72 46 5.33333 11 396 8.00000 5.00000 37.5% 250 10s H 135 89 7.0000000 5.00000 28.6% 198 11s 196 100 5.33333 13 412 7.00000 5.00000 28.6% 207 15s 329 143 5.33333 7 96 7.00000 5.00000 28.6% 194 20s 467 184 6.00000 14 84 7.00000 5.00000 28.6% 211 25s 586 231 6.00000 16 56 7.00000 5.00000 28.6% 216 30s Explored 608 nodes (150777 simplex iterations) in 33.01 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%