Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:26:41 2013 Optimize a model with 71484 rows, 70644 columns and 282324 nonzeros Presolve removed 4869 rows and 0 columns Presolve time: 0.46s Presolved: 66615 rows, 70644 columns, 272586 nonzeros Variable types: 70560 continuous, 84 integer (84 binary) Root relaxation: objective 1.016946e+05, 16516 iterations, 4.33 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 101694.598 0 4 - 101694.598 - - 4s H 0 0 103108.00000 101694.598 1.37% - 5s H 0 0 102418.00000 101694.598 0.71% - 5s H 0 0 102117.00000 101694.598 0.41% - 5s 0 0 101694.608 0 5 102117.000 101694.608 0.41% - 5s 0 0 101694.608 0 5 102117.000 101694.608 0.41% - 6s 0 0 101694.608 0 5 102117.000 101694.608 0.41% - 7s 0 2 101694.782 0 5 102117.000 101694.782 0.41% - 10s H 13 11 102067.92308 101789.842 0.27% 179 12s * 16 8 11 101972.00000 101789.842 0.18% 155 12s * 19 5 5 101930.00000 101799.750 0.13% 162 12s * 25 3 7 101861.00000 101847.658 0.01% 148 12s Cutting planes: Gomory: 1 Flow cover: 4 Explored 27 nodes (20278 simplex iterations) in 13.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.018610000000e+05, best bound 1.018610000000e+05, gap 0.0%