Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:30:43 2013

Optimize a model with 35459 rows, 34869 columns and 139299 nonzeros
Presolve removed 2993 rows and 0 columns
Presolve time: 0.21s
Presolved: 32466 rows, 34869 columns, 133313 nonzeros
Variable types: 34810 continuous, 59 integer (59 binary)

Root relaxation: objective 6.559086e+04, 6407 iterations, 0.85 seconds

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

     0     0 65590.8556    0    5          - 65590.8556     -      -    1s
H    0     0                    66728.000000 65590.8556  1.70%     -    1s
H    0     0                    66035.000000 65590.8556  0.67%     -    1s
H    0     0                    65772.000000 65590.8556  0.28%     -    1s
     0     0 65591.9629    0    6 65772.0000 65591.9629  0.27%     -    1s
     0     0 65591.9629    0    5 65772.0000 65591.9629  0.27%     -    2s
     0     0 65592.0666    0    6 65772.0000 65592.0666  0.27%     -    2s
     0     0 65592.2359    0    6 65772.0000 65592.2359  0.27%     -    2s
H    0     0                    65641.000000 65592.2359  0.07%     -    3s
     0     1 65639.4146    0    1 65641.0000 65639.4146  0.00%     -    3s

Cutting planes:
  Gomory: 1
  Flow cover: 3

Explored 1 nodes (9562 simplex iterations) in 3.38 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.564100000000e+04, best bound 6.563941463415e+04, gap 0.0024%