Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:16:59 2013 Optimize a model with 900 rows, 25300 columns and 50850 nonzeros Presolve removed 200 rows and 150 columns Presolve time: 0.21s Presolved: 700 rows, 25150 columns, 50450 nonzeros Variable types: 25100 continuous, 50 integer (50 binary) Root relaxation: objective 2.246016e+05, 1013 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 225547.53148 224601.597 0.42% - 0s H 0 0 225227.39805 224601.597 0.28% - 0s 0 2 224666.139 0 1 225227.398 224666.139 0.25% - 0s * 3 1 2 224847.24808 224847.248 0.0% 42.0 0s Explored 4 nodes (1139 simplex iterations) in 0.70 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%