Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:13:13 2013

Optimize a model with 69803 rows, 68973 columns and 275643 nonzeros
Presolve removed 3086 rows and 0 columns
Presolve time: 0.46s
Presolved: 66717 rows, 68973 columns, 269471 nonzeros
Variable types: 68890 continuous, 83 integer (83 binary)

Root relaxation: objective 9.625408e+04, 14503 iterations, 3.32 seconds

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

     0     0 96254.0824    0    5          - 96254.0824     -      -    3s
H    0     0                    98063.000000 96254.0824  1.84%     -    4s
H    0     0                    96640.000000 96254.0824  0.40%     -    4s
     0     0 96255.8960    0    6 96640.0000 96255.8960  0.40%     -    5s
     0     0 96255.8960    0    5 96640.0000 96255.8960  0.40%     -    7s
     0     0 96255.8960    0    6 96640.0000 96255.8960  0.40%     -    7s
     0     0 96256.0180    0    6 96640.0000 96256.0180  0.40%     -    7s
     0     2 96259.8155    0    6 96640.0000 96259.8155  0.39%     -    9s
H    4     4                    96465.000000 96351.2859  0.12%  76.5    9s
H    5     5                    96448.000000 96351.2859  0.10%  64.8    9s
H    6     6                    96425.611111 96351.2859  0.08%  56.0    9s
*    8     4               7    96379.000000 96351.2859  0.03%  48.0    9s

Cutting planes:
  Gomory: 1
  Flow cover: 3

Explored 15 nodes (20750 simplex iterations) in 9.62 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.637900000000e+04, best bound 9.637900000000e+04, gap 0.0%