Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:59:33 2013 Optimize a model with 17261 rows, 16851 columns and 67281 nonzeros Presolve removed 1337 rows and 0 columns Presolve time: 0.09s Presolved: 15924 rows, 16851 columns, 64607 nonzeros Variable types: 16810 continuous, 41 integer (41 binary) Root relaxation: objective 4.235996e+04, 2294 iterations, 0.13 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 42359.9583 0 2 - 42359.9583 - - 0s H 0 0 42393.000000 42359.9583 0.08% - 0s 0 0 42360.4099 0 3 42393.0000 42360.4099 0.08% - 0s 0 0 42360.4099 0 2 42393.0000 42360.4099 0.08% - 0s 0 0 42360.4099 0 3 42393.0000 42360.4099 0.08% - 0s 0 0 42361.6148 0 1 42393.0000 42361.6148 0.07% - 0s 0 2 42372.0000 0 1 42393.0000 42372.0000 0.05% - 0s Cutting planes: Gomory: 1 Explored 3 nodes (3163 simplex iterations) in 0.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.239300000000e+04, best bound 4.239300000000e+04, gap 0.0%