Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:38:14 2013

Optimize a model with 64880 rows, 64080 columns and 256080 nonzeros
Presolve removed 1645 rows and 0 columns
Presolve time: 0.40s
Presolved: 63235 rows, 64080 columns, 252790 nonzeros
Variable types: 64000 continuous, 80 integer (80 binary)

Root relaxation: objective 9.176150e+04, 14603 iterations, 3.43 seconds

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

     0     0 91761.5030    0    7          - 91761.5030     -      -    4s
H    0     0                    95627.000000 91761.5030  4.04%     -    4s
H    0     0                    92058.000000 91761.5030  0.32%     -    4s
     0     0 91764.1520    0    8 92058.0000 91764.1520  0.32%     -    4s
     0     0 91764.2723    0    8 92058.0000 91764.2723  0.32%     -    5s
     0     0 91764.2723    0    8 92058.0000 91764.2723  0.32%     -    5s
     0     0 91785.5357    0    5 92058.0000 91785.5357  0.30%     -    7s
     0     0 91785.5357    0    5 92058.0000 91785.5357  0.30%     -   10s
     0     0 91786.3786    0    7 92058.0000 91786.3786  0.30%     -   10s
     0     0 91786.3786    0    7 92058.0000 91786.3786  0.30%     -   10s
     0     0 91843.6732    0    5 92058.0000 91843.6732  0.23%     -   11s
     0     2 91849.4484    0    5 92058.0000 91849.4484  0.23%     -   12s
*   18     0               4    92018.000000 92018.0000   0.0%  68.2   13s

Cutting planes:
  Gomory: 1
  Flow cover: 5

Explored 19 nodes (21920 simplex iterations) in 13.18 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.201800000000e+04, best bound 9.201800000000e+04, gap 0.0%