Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:51:43 2013 Optimize a model with 3819 rows, 3629 columns and 14459 nonzeros Presolve removed 275 rows and 0 columns Presolve time: 0.02s Presolved: 3544 rows, 3629 columns, 13909 nonzeros Variable types: 3610 continuous, 19 integer (19 binary) Root relaxation: objective 2.207746e+04, 384 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 22077.4615 0 1 - 22077.4615 - - 0s H 0 0 22088.000000 22077.4615 0.05% - 0s 0 0 22077.5973 0 2 22088.0000 22077.5973 0.05% - 0s 0 0 22077.5973 0 2 22088.0000 22077.5973 0.05% - 0s Cutting planes: Gomory: 1 Flow cover: 2 Explored 0 nodes (389 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.208800000000e+04, best bound 2.208800000000e+04, gap 0.0%