Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:59:37 2013 Optimize a model with 1200 rows, 28550 columns and 66550 nonzeros Presolve removed 50 rows and 1250 columns Presolve time: 0.14s Presolved: 1150 rows, 27300 columns, 64550 nonzeros Variable types: 27050 continuous, 250 integer (250 binary) Root relaxation: objective 2.246016e+05, 1926 iterations, 0.09 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 H 0 0 235112.04333 224601.597 4.47% - 0s 0 0 224601.597 0 3 235112.043 224601.597 4.47% - 0s 0 0 224601.597 0 3 235112.043 224601.597 4.47% - 0s 0 0 224601.597 0 3 235112.043 224601.597 4.47% - 0s 0 0 224601.597 0 3 235112.043 224601.597 4.47% - 0s 0 0 224601.597 0 3 235112.043 224601.597 4.47% - 0s H 0 0 225383.64985 224601.597 0.35% - 0s 0 2 224601.597 0 3 225383.650 224601.597 0.35% - 0s * 4 1 4 224847.24808 224785.855 0.03% 104 1s Cutting planes: Flow cover: 4 Explored 7 nodes (3579 simplex iterations) in 1.26 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%