Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:20:12 2013 Optimize a model with 1100 rows, 25850 columns and 53800 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.13s Presolved: 1050 rows, 25800 columns, 53250 nonzeros Variable types: 25600 continuous, 200 integer (200 binary) Root relaxation: objective 2.246016e+05, 1792 iterations, 0.08 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 230510.99933 224601.597 2.56% - 0s H 0 0 225363.77301 224601.597 0.34% - 0s 0 0 224601.597 0 3 225363.773 224601.597 0.34% - 0s 0 0 224601.597 0 3 225363.773 224601.597 0.34% - 0s 0 0 224601.597 0 3 225363.773 224601.597 0.34% - 0s 0 0 224601.597 0 3 225363.773 224601.597 0.34% - 0s 0 2 224601.597 0 3 225363.773 224601.597 0.34% - 0s * 4 1 4 224847.24808 224785.855 0.03% 85.5 1s Cutting planes: Flow cover: 3 Explored 7 nodes (2943 simplex iterations) in 1.10 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%