Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:27:04 2013

Optimize a model with 51262 rows, 50552 columns and 201782 nonzeros
Presolve removed 71 rows and 0 columns
Presolve time: 0.23s
Presolved: 51191 rows, 50552 columns, 201711 nonzeros
Variable types: 50481 continuous, 71 integer (71 binary)

Root relaxation: objective 5.766092e+04, 5565 iterations, 3.11 seconds

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

     0     0 57660.9238    0   55          - 57660.9238     -      -    3s
H    0     0                    82183.000000 57660.9238  29.8%     -    4s
H    0     0                    71502.000000 57660.9238  19.4%     -   15s
     0     0 68370.3215    0   14 71502.0000 68370.3215  4.38%     -   20s
     0     0 69327.8540    0   10 71502.0000 69327.8540  3.04%     -   22s
     0     0 69444.4822    0    3 71502.0000 69444.4822  2.88%     -   22s
H    0     0                    71140.224452 69444.4822  2.38%     -   22s
H    0     0                    70410.000000 69444.4822  1.37%     -   22s
     0     2 69448.5260    0    3 70410.0000 69448.5260  1.37%     -   23s
H    6     4                    69757.666667 69533.3407  0.32%   117   24s
    11     6 69655.3529   11    1 69757.6667 69533.3407  0.32%  97.1   25s
H   14     5                    69740.000000 69533.3407  0.30%  89.9   25s
*   40     0               8    69694.000000 69694.0000   0.0%  72.6   26s

Cutting planes:
  Implied bound: 67

Explored 41 nodes (14125 simplex iterations) in 26.71 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.969400000000e+04, best bound 6.969400000000e+04, gap 0.0%