Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:04:21 2013

Optimize a model with 45694 rows, 45024 columns and 179694 nonzeros
Presolve removed 67 rows and 0 columns
Presolve time: 0.20s
Presolved: 45627 rows, 45024 columns, 179627 nonzeros
Variable types: 44957 continuous, 67 integer (67 binary)

Root relaxation: objective 5.724295e+04, 5903 iterations, 3.33 seconds

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

     0     0 57242.9508    0   55          - 57242.9508     -      -    3s
H    0     0                    87645.000000 57242.9508  34.7%     -    5s
     0     0 70191.6810    0   11 87645.0000 70191.6810  19.9%     -   10s
H    0     0                    76502.000000 70191.6810  8.25%     -   11s
     0     0 73278.8058    0    5 76502.0000 73278.8058  4.21%     -   12s
     0     0 73342.7801    0    3 76502.0000 73342.7801  4.13%     -   12s
H    0     0                    75138.456936 73342.7801  2.39%     -   12s
H    0     0                    74500.000000 73342.7801  1.55%     -   12s
H    0     0                    73748.000000 73342.7801  0.55%     -   12s
     0     2 73345.3082    0    3 73748.0000 73345.3082  0.55%     -   13s
    19    10 73555.8000   18    1 73748.0000 73407.4532  0.46%  97.8   15s
H   21     7                    73690.000000 73407.4532  0.38%  92.8   15s
*   23     7              22    73605.000000 73407.4532  0.27%  95.1   15s
*   46     7               7    73602.000000 73521.2515  0.11%   101   16s
*   60     5              11    73593.000000 73544.1739  0.07%  92.3   16s

Cutting planes:
  Implied bound: 65

Explored 64 nodes (17413 simplex iterations) in 16.96 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.359300000000e+04, best bound 7.358867213115e+04, gap 0.0059%