Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:06:48 2013

Optimize a model with 22654 rows, 22184 columns and 88454 nonzeros
Presolve removed 47 rows and 0 columns
Presolve time: 0.10s
Presolved: 22607 rows, 22184 columns, 88407 nonzeros
Variable types: 22137 continuous, 47 integer (47 binary)

Root relaxation: objective 4.110238e+04, 2980 iterations, 0.80 seconds

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

     0     0 41102.3812    0   40          - 41102.3812     -      -    0s
H    0     0                    54215.000000 41102.3812  24.2%     -    1s
     0     0 49815.5870    0    8 54215.0000 49815.5870  8.11%     -    2s
H    0     0                    53808.944825 49815.5870  7.42%     -    2s
H    0     0                    52320.000000 49815.5870  4.79%     -    2s
     0     0 50183.8920    0    6 52320.0000 50183.8920  4.08%     -    3s
     0     0 50189.7103    0    4 52320.0000 50189.7103  4.07%     -    3s
H    0     0                    52239.000000 50189.7103  3.92%     -    3s
     0     2 50190.3157    0    4 52239.0000 50190.3157  3.92%     -    3s
H    1     1                    51567.717874 50190.3157  2.67%   0.0    3s
H    3     3                    50575.666667 50215.4314  0.71%  16.0    3s
H    4     4                    50567.857143 50219.5714  0.69%  15.0    3s
H    9     4                    50493.375000 50224.4258  0.53%  45.9    3s
*   10     4               8    50282.000000 50224.4258  0.11%  56.8    3s

Cutting planes:
  Implied bound: 43

Explored 20 nodes (6287 simplex iterations) in 4.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.028200000000e+04, best bound 5.028200000000e+04, gap 0.0%