Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:46:34 2013 Optimize a model with 1050 rows, 25650 columns and 52000 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.35s Presolved: 950 rows, 25550 columns, 51650 nonzeros Variable types: 25350 continuous, 200 integer (200 binary) Root relaxation: objective 2.246016e+05, 1858 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 224601.597 0 1 - 224601.597 - - 0s H 0 0 227865.19678 224601.597 1.43% - 0s 0 0 224601.597 0 1 227865.197 224601.597 1.43% - 0s 0 0 224601.597 0 1 227865.197 224601.597 1.43% - 0s 0 0 224601.597 0 1 227865.197 224601.597 1.43% - 0s 0 0 224601.597 0 1 227865.197 224601.597 1.43% - 0s 0 0 224601.597 0 1 227865.197 224601.597 1.43% - 0s 0 2 224609.990 0 1 227865.197 224609.990 1.43% - 1s * 4 4 4 224847.24808 224785.855 0.03% 54.0 1s Cutting planes: Flow cover: 3 Explored 8 nodes (2500 simplex iterations) in 1.29 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%