Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:42:04 2013

Optimize a model with 39184 rows, 38564 columns and 153884 nonzeros
Presolve removed 62 rows and 0 columns
Presolve time: 0.17s
Presolved: 39122 rows, 38564 columns, 153822 nonzeros
Variable types: 38502 continuous, 62 integer (62 binary)

Root relaxation: objective 5.443126e+04, 5523 iterations, 3.45 seconds

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

     0     0 54431.2575    0   50          - 54431.2575     -      -    3s
H    0     0                    84668.000000 54431.2575  35.7%     -    5s
     0     0 70133.9870    0   12 84668.0000 70133.9870  17.2%     -    9s
H    0     0                    82437.684093 70133.9870  14.9%     -    9s
H    0     0                    75966.000000 70133.9870  7.68%     -    9s
     0     0 72326.3128    0    5 75966.0000 72326.3128  4.79%     -   10s
H    0     0                    75570.000000 72326.3128  4.29%     -   10s
H    0     0                    74618.000000 72326.3128  3.07%     -   11s
     0     2 72329.9440    0    5 74618.0000 72329.9440  3.07%     -   11s
H    3     3                    73980.269318 72465.3145  2.05%   201   11s
H    4     4                    73955.634127 72465.3145  2.02%   196   11s
*    6     6               4    72615.000000 72554.2752  0.08%   209   12s

Cutting planes:
  Gomory: 1
  Implied bound: 59

Explored 10 nodes (12634 simplex iterations) in 12.23 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.261500000000e+04, best bound 7.261500000000e+04, gap 0.0%