Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:56:26 2013

Optimize a model with 44286 rows, 43626 columns and 174306 nonzeros
Presolve removed 899 rows and 0 columns
Presolve time: 0.26s
Presolved: 43387 rows, 43626 columns, 172508 nonzeros
Variable types: 43560 continuous, 66 integer (66 binary)

Root relaxation: objective 6.364299e+04, 7519 iterations, 1.23 seconds

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

     0     0 63642.9901    0    3          - 63642.9901     -      -    1s
H    0     0                    64518.000000 63642.9901  1.36%     -    1s
     0     0 63653.3606    0    4 64518.0000 63653.3606  1.34%     -    2s
     0     0 63653.3606    0    4 64518.0000 63653.3606  1.34%     -    2s
     0     0 63653.6316    0    4 64518.0000 63653.6316  1.34%     -    2s
     0     0 63653.6316    0    3 64518.0000 63653.6316  1.34%     -    5s
     0     0 63653.6649    0    5 64518.0000 63653.6649  1.34%     -    5s
     0     0 63653.6649    0    5 64518.0000 63653.6649  1.34%     -    6s
     0     2 63667.8708    0    5 64518.0000 63667.8708  1.32%     -    7s
H    3     3                    64285.833333 63667.8708  0.96%   150    8s
H    4     4                    64190.000000 63667.8708  0.81%   198    8s
*    5     5               4    64122.000000 63667.8708  0.71%   169    8s

Cutting planes:
  Gomory: 2
  Flow cover: 2

Explored 9 nodes (14352 simplex iterations) in 8.23 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.412200000000e+04, best bound 6.412200000000e+04, gap 0.0%