Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:07:30 2013 Optimize a model with 528 rows, 23088 columns and 46128 nonzeros Presolve time: 0.03s Presolved: 528 rows, 23088 columns, 46128 nonzeros Variable types: 23040 continuous, 48 integer (48 binary) Root relaxation: objective 5.288778e+04, 950 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 52887.7762 0 11 - 52887.7762 - - 0s H 0 0 55739.000000 52887.7762 5.12% - 0s H 0 0 54847.000000 52887.7762 3.57% - 0s 0 0 53404.6344 0 3 54847.0000 53404.6344 2.63% - 0s H 0 0 54769.500000 53404.6344 2.49% - 0s H 0 0 54622.000000 53404.6344 2.23% - 0s 0 0 53407.3788 0 7 54622.0000 53407.3788 2.22% - 0s H 0 0 54361.000000 53407.3788 1.75% - 0s 0 0 53408.7409 0 5 54361.0000 53408.7409 1.75% - 0s H 0 0 53687.000000 53408.7409 0.52% - 0s 0 0 53409.2480 0 5 53687.0000 53409.2480 0.52% - 0s 0 0 53410.1530 0 7 53687.0000 53410.1530 0.52% - 0s 0 0 53410.7633 0 4 53687.0000 53410.7633 0.51% - 0s 0 0 53411.1909 0 3 53687.0000 53411.1909 0.51% - 0s H 0 0 53580.000000 53411.1909 0.32% - 0s 0 0 53411.1909 0 8 53580.0000 53411.1909 0.32% - 0s 0 0 53411.1909 0 2 53580.0000 53411.1909 0.32% - 0s 0 0 53411.1909 0 5 53580.0000 53411.1909 0.32% - 0s 0 0 53412.4313 0 4 53580.0000 53412.4313 0.31% - 0s 0 0 53412.4652 0 4 53580.0000 53412.4652 0.31% - 0s 0 0 53412.5128 0 3 53580.0000 53412.5128 0.31% - 0s 0 0 53458.3042 0 2 53580.0000 53458.3042 0.23% - 0s H 0 0 53519.000000 53458.3042 0.11% - 0s 0 1 53458.9481 0 3 53519.0000 53458.9481 0.11% - 0s Cutting planes: Implied bound: 69 Flow cover: 11 Explored 5 nodes (2816 simplex iterations) in 0.89 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.351900000000e+04, best bound 5.351768235294e+04, gap 0.0025%