Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:05:44 2013 Optimize a model with 22607 rows, 22137 columns and 88407 nonzeros Presolve removed 885 rows and 0 columns Presolve time: 0.12s Presolved: 21722 rows, 22137 columns, 86637 nonzeros Variable types: 22090 continuous, 47 integer (47 binary) Root relaxation: objective 5.966614e+04, 5324 iterations, 0.53 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 59666.1428 0 3 - 59666.1428 - - 0s H 0 0 59987.000000 59666.1428 0.53% - 0s H 0 0 59739.000000 59666.1428 0.12% - 0s 0 0 59669.6575 0 3 59739.0000 59669.6575 0.12% - 0s 0 0 59669.6575 0 3 59739.0000 59669.6575 0.12% - 1s 0 0 59670.5813 0 4 59739.0000 59670.5813 0.11% - 1s 0 0 59670.5813 0 3 59739.0000 59670.5813 0.11% - 2s 0 0 59674.7919 0 3 59739.0000 59674.7919 0.11% - 2s 0 0 59674.7919 0 3 59739.0000 59674.7919 0.11% - 2s 0 0 59674.7919 0 3 59739.0000 59674.7919 0.11% - 2s 0 2 59677.2752 0 3 59739.0000 59677.2752 0.10% - 2s Cutting planes: Gomory: 1 Flow cover: 4 Explored 3 nodes (7569 simplex iterations) in 2.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.973900000000e+04, best bound 5.973900000000e+04, gap 0.0%