Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:00:20 2013

Optimize a model with 68142 rows, 67322 columns and 269042 nonzeros
Presolve removed 2195 rows and 0 columns
Presolve time: 0.44s
Presolved: 65947 rows, 67322 columns, 264652 nonzeros
Variable types: 67240 continuous, 82 integer (82 binary)

Root relaxation: objective 9.696052e+04, 14591 iterations, 3.21 seconds

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

     0     0 96960.5243    0    6          - 96960.5243     -      -    3s
H    0     0                    102127.00000 96960.5243  5.06%     -    4s
H    0     0                    98532.000000 96960.5243  1.59%     -    4s
     0     0 96969.0119    0    7 98532.0000 96969.0119  1.59%     -    4s
     0     0 96969.0385    0    7 98532.0000 96969.0385  1.59%     -    5s
     0     0 96969.0385    0    7 98532.0000 96969.0385  1.59%     -    5s
     0     0 96969.0385    0    6 98532.0000 96969.0385  1.59%     -   11s
     0     0 96970.2600    0    8 98532.0000 96970.2600  1.59%     -   11s
     0     0 96970.2736    0    8 98532.0000 96970.2736  1.58%     -   12s
     0     2 96983.7673    0    8 98532.0000 96983.7673  1.57%     -   14s
     3     5 97299.3593    3    5 98532.0000 97132.5314  1.42%   323   15s
H    7     7                    98368.545455 97186.6314  1.20%   206   15s
H   10    10                    97780.857143 97186.6314  0.61%   166   15s
H   11    11                    97675.000000 97186.6314  0.50%   155   15s
*   17    13              15    97552.000000 97186.6314  0.37%   141   16s
*   28    19               8    97494.000000 97259.5740  0.24%   133   17s

Cutting planes:
  Gomory: 4
  Flow cover: 8

Explored 66 nodes (31165 simplex iterations) in 18.81 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.749400000000e+04, best bound 9.748502040816e+04, gap 0.0092%