Gurobi 5.0.1 (linux64) logging started Wed Apr 24 08:06:28 2013 Optimize a model with 93216 rows, 92256 columns and 368736 nonzeros Presolve removed 4524 rows and 0 columns Presolve time: 0.66s Presolved: 88692 rows, 92256 columns, 359688 nonzeros Variable types: 92160 continuous, 96 integer (96 binary) Root relaxation: objective 1.270615e+05, 19460 iterations, 4.42 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 127061.538 0 1 - 127061.538 - - 5s H 0 0 127982.00000 127061.538 0.72% - 5s 0 0 127061.606 0 2 127982.000 127061.606 0.72% - 6s 0 0 127061.606 0 2 127982.000 127061.606 0.72% - 7s 0 0 127061.606 0 1 127982.000 127061.606 0.72% - 15s 0 0 127061.606 0 2 127982.000 127061.606 0.72% - 15s 0 0 127061.606 0 2 127982.000 127061.606 0.72% - 17s 0 2 127069.427 0 2 127982.000 127069.427 0.71% - 19s 1 4 127273.888 1 5 127982.000 127231.285 0.59% 458 20s H 26 4 127440.54806 127301.100 0.11% 186 24s H 27 1 127389.00000 127360.476 0.02% 188 24s 28 1 cutoff 5 127389.000 127360.476 0.02% 182 25s Cutting planes: Gomory: 1 Flow cover: 4 Explored 30 nodes (37161 simplex iterations) in 25.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.273890000000e+05, best bound 1.273890000000e+05, gap 0.0%