Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:27:09 2013

Optimize a model with 34278 rows, 33698 columns and 134618 nonzeros
Presolve removed 3168 rows and 0 columns
Presolve time: 0.20s
Presolved: 31110 rows, 33698 columns, 128282 nonzeros
Variable types: 33640 continuous, 58 integer (58 binary)

Root relaxation: objective 6.353658e+04, 7318 iterations, 1.01 seconds

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

     0     0 63536.5824    0    3          - 63536.5824     -      -    1s
H    0     0                    64741.000000 63536.5824  1.86%     -    1s
     0     0 63542.0198    0    4 64741.0000 63542.0198  1.85%     -    1s
     0     0 63542.5574    0    4 64741.0000 63542.5574  1.85%     -    1s
H    0     0                    64618.036141 63542.5574  1.66%     -    2s
H    0     0                    64403.965106 63542.5574  1.34%     -    2s
H    0     0                    64314.136842 63542.5574  1.20%     -    2s
H    0     0                    63726.000000 63542.5574  0.29%     -    2s
     0     2 63545.0486    0    4 63726.0000 63545.0486  0.28%     -    2s

Cutting planes:
  Gomory: 1
  Flow cover: 2

Explored 14 nodes (8663 simplex iterations) in 3.51 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.372600000000e+04, best bound 6.372600000000e+04, gap 0.0%