Gurobi 5.0.1 (linux64) logging started Wed Apr 24 05:39:12 2013 Optimize a model with 80189 rows, 79299 columns and 316929 nonzeros Presolve removed 6611 rows and 0 columns Presolve time: 0.55s Presolved: 73578 rows, 79299 columns, 303707 nonzeros Variable types: 79210 continuous, 89 integer (89 binary) Root relaxation: objective 9.446913e+04, 17409 iterations, 4.73 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 94469.1294 0 7 - 94469.1294 - - 5s H 0 0 99676.000000 94469.1294 5.22% - 5s H 0 0 95184.000000 94469.1294 0.75% - 6s 0 0 94474.5273 0 8 95184.0000 94474.5273 0.75% - 6s 0 0 94474.8455 0 8 95184.0000 94474.8455 0.75% - 7s 0 0 94474.8455 0 7 95184.0000 94474.8455 0.75% - 15s 0 0 94475.2176 0 8 95184.0000 94475.2176 0.74% - 15s 0 0 94475.2176 0 8 95184.0000 94475.2176 0.74% - 16s 0 2 94480.6701 0 8 95184.0000 94480.6701 0.74% - 18s H 8 6 94768.285714 94695.2645 0.08% 136 19s H 9 6 94761.844037 94695.2645 0.07% 127 19s * 11 3 10 94745.000000 94695.2645 0.05% 110 19s Cutting planes: Gomory: 1 Flow cover: 10 Explored 14 nodes (27284 simplex iterations) in 19.71 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.474500000000e+04, best bound 9.473730666667e+04, gap 0.0081%