Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:30:04 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 6.146844e+04, 6639 iterations, 4.18 seconds

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

     0     0 61468.4387    0   56          - 61468.4387     -      -    4s
H    0     0                    100338.00000 61468.4387  38.7%     -    7s
     0     0 72859.8239    0   19 100338.000 72859.8239  27.4%     -   14s
H    0     0                    89593.000000 72859.8239  18.7%     -   14s
     0     0 79291.6920    0    7 89593.0000 79291.6920  11.5%     -   17s
H    0     0                    86593.954361 79291.6920  8.43%     -   17s
H    0     0                    82765.000000 79291.6920  4.20%     -   17s
     0     0 79398.3419    0    2 82765.0000 79398.3419  4.07%     -   18s
H    0     0                    81905.389686 79398.3419  3.06%     -   18s
H    0     0                    81490.000000 79398.3419  2.57%     -   18s
H    0     0                    79952.337079 79398.3419  0.69%     -   19s
H    0     0                    79930.000000 79398.3419  0.67%     -   19s
     0     2 79401.5441    0    2 79930.0000 79401.5441  0.66%     -   20s
*   15     7               5    79904.000000 79730.3887  0.22%   232   22s
*   37     2               7    79826.000000 79775.7029  0.06%   136   23s

Cutting planes:
  Gomory: 1
  Implied bound: 71

Explored 40 nodes (19184 simplex iterations) in 23.91 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.982600000000e+04, best bound 7.982600000000e+04, gap 0.0%