Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:24:55 2013

Optimize a model with 33117 rows, 32547 columns and 130017 nonzeros
Presolve removed 2106 rows and 0 columns
Presolve time: 0.19s
Presolved: 31011 rows, 32547 columns, 125805 nonzeros
Variable types: 32490 continuous, 57 integer (57 binary)

Root relaxation: objective 5.940206e+04, 5960 iterations, 0.79 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0 59402.0621    0    4          - 59402.0621     -      -    1s
H    0     0                    60283.000000 59402.0621  1.46%     -    1s
     0     0 59403.0264    0    5 60283.0000 59403.0264  1.46%     -    1s
H    0     0                    60159.000000 59403.0264  1.26%     -    1s
     0     0 59403.1741    0    5 60159.0000 59403.1741  1.26%     -    1s
     0     0 59403.1741    0    5 60159.0000 59403.1741  1.26%     -    1s
H    0     0                    60060.000000 59403.1741  1.09%     -    1s
     0     0 59403.1741    0    5 60060.0000 59403.1741  1.09%     -    2s
H    0     0                    59843.821429 59403.1741  0.74%     -    2s
     0     2 59405.6796    0    5 59843.8214 59405.6796  0.73%     -    2s
H    6     6                    59682.500000 59471.5478  0.35%   132    3s
H    7     5                    59624.105263 59471.5478  0.26%   124    3s
*    8     5               7    59582.000000 59471.5478  0.19%   113    3s

Cutting planes:
  Gomory: 2
  Flow cover: 6

Explored 16 nodes (7342 simplex iterations) in 3.59 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.958200000000e+04, best bound 5.958200000000e+04, gap 0.0%