Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:35:03 2013 Optimize a model with 1500 rows, 35550 columns and 151400 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.20s Presolved: 1450 rows, 35500 columns, 141350 nonzeros Variable types: 35100 continuous, 400 integer (400 binary) Root relaxation: objective 2.246016e+05, 2507 iterations, 0.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 224601.597 0 3 - 224601.597 - - 0s 0 0 224601.597 0 3 - 224601.597 - - 0s 0 0 224601.597 0 3 - 224601.597 - - 0s 0 0 224601.597 0 3 - 224601.597 - - 0s 0 0 224601.597 0 3 - 224601.597 - - 0s 0 0 224601.597 0 3 - 224601.597 - - 1s H 0 0 225662.18307 224601.597 0.47% - 1s 0 2 224601.597 0 3 225662.183 224601.597 0.47% - 1s * 4 1 4 224847.24808 224785.855 0.03% 86.5 1s Cutting planes: Flow cover: 3 Explored 7 nodes (3942 simplex iterations) in 1.57 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.248472480793e+05, best bound 2.248472480793e+05, gap 0.0%