Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:51:45 2013 Optimize a model with 3838 rows, 3648 columns and 14478 nonzeros Presolve removed 19 rows and 0 columns Presolve time: 0.01s Presolved: 3819 rows, 3648 columns, 14459 nonzeros Variable types: 3629 continuous, 19 integer (19 binary) Root relaxation: objective 2.118232e+04, 545 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 21182.3183 0 12 - 21182.3183 - - 0s H 0 0 22059.000000 21182.3183 3.97% - 0s H 0 0 22027.000000 21182.3183 3.83% - 0s * 0 0 0 21776.000000 21776.0000 0.0% - 0s Cutting planes: Gomory: 9 Implied bound: 12 Explored 0 nodes (635 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.177600000000e+04, best bound 2.177600000000e+04, gap 0.0%