Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:51:47 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 2.150511e+04, 505 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 21505.1144 0 14 - 21505.1144 - - 0s H 0 0 22192.000000 21505.1144 3.10% - 0s 0 0 22077.4615 0 1 22192.0000 22077.4615 0.52% - 0s H 0 0 22124.846154 22077.4615 0.21% - 0s H 0 0 22088.000000 22077.4615 0.05% - 0s Cutting planes: Implied bound: 11 Explored 0 nodes (652 simplex iterations) in 0.12 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%