Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:17:29 2013 Optimize a model with 28726 rows, 28196 columns and 112466 nonzeros Presolve removed 53 rows and 0 columns Presolve time: 0.12s Presolved: 28673 rows, 28196 columns, 112413 nonzeros Variable types: 28143 continuous, 53 integer (53 binary) Root relaxation: objective 4.618756e+04, 3391 iterations, 0.77 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46187.5644 0 40 - 46187.5644 - - 1s H 0 0 59371.000000 46187.5644 22.2% - 1s 0 0 52755.7859 0 7 59371.0000 52755.7859 11.1% - 2s H 0 0 55809.000000 52755.7859 5.47% - 2s H 0 0 55485.000000 52755.7859 4.92% - 2s 0 0 53284.6564 0 3 55485.0000 53284.6564 3.97% - 3s H 0 0 55238.365455 53284.6564 3.54% - 3s H 0 0 54608.000000 53284.6564 2.42% - 3s H 0 0 53334.000000 53284.6564 0.09% - 3s 0 0 53294.8585 0 4 53334.0000 53294.8585 0.07% - 3s 0 0 53298.4200 0 1 53334.0000 53298.4200 0.07% - 3s 0 0 53298.4200 0 33 53334.0000 53298.4200 0.07% - 4s 0 0 53298.4200 0 2 53334.0000 53298.4200 0.07% - 6s 0 0 53298.4200 0 2 53334.0000 53298.4200 0.07% - 6s 0 0 53298.4200 0 1 53334.0000 53298.4200 0.07% - 6s 0 0 53326.0000 0 1 53334.0000 53326.0000 0.01% - 6s Cutting planes: Gomory: 4 Implied bound: 34 Explored 0 nodes (10086 simplex iterations) in 6.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.333400000000e+04, best bound 5.333400000000e+04, gap 0.0%