Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:58:43 2013

Optimize a model with 68142 rows, 67322 columns and 269042 nonzeros
Presolve removed 3465 rows and 0 columns
Presolve time: 0.43s
Presolved: 64677 rows, 67322 columns, 262112 nonzeros
Variable types: 67240 continuous, 82 integer (82 binary)

Root relaxation: objective 9.026301e+04, 14682 iterations, 3.32 seconds

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

     0     0 90263.0056    0    3          - 90263.0056     -      -    3s
H    0     0                    91091.000000 90263.0056  0.91%     -    4s
     0     0 90264.3127    0    4 91091.0000 90264.3127  0.91%     -    4s
     0     0 90264.8896    0    4 91091.0000 90264.8896  0.91%     -    5s
     0     0 90264.8896    0    4 91091.0000 90264.8896  0.91%     -    5s
     0     0 90264.8896    0    4 91091.0000 90264.8896  0.91%     -    6s
     0     2 90266.1290    0    4 91091.0000 90266.1290  0.91%     -    8s
H    3     3                    90510.234043 90330.9091  0.20%   187    8s
H    5     5                    90406.492063 90330.9091  0.08%   150    9s
*    7     3               6    90375.000000 90330.9091  0.05%   128    9s

Cutting planes:
  Gomory: 1
  Flow cover: 7

Explored 12 nodes (16094 simplex iterations) in 9.42 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.037500000000e+04, best bound 9.037500000000e+04, gap 0.0%