Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:20:07 2013

Optimize a model with 1100 rows, 25850 columns and 53800 nonzeros
Presolve removed 50 rows and 50 columns
Presolve time: 0.14s
Presolved: 1050 rows, 25800 columns, 53250 nonzeros
Variable types: 25600 continuous, 200 integer (200 binary)

Root relaxation: objective 1.749223e+05, 1679 iterations, 0.08 seconds

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

     0     0 174922.321    0    6          - 174922.321     -      -    0s
     0     0 174945.409    0    6          - 174945.409     -      -    0s
     0     0 174953.275    0    6          - 174953.275     -      -    0s
     0     0 174958.761    0    6          - 174958.761     -      -    0s
     0     0 174958.761    0    6          - 174958.761     -      -    0s
     0     0 174958.761    0    6          - 174958.761     -      -    0s
     0     0 174958.761    0    6          - 174958.761     -      -    0s
H    0     0                    177161.77914 174958.761  1.24%     -    0s
     0     2 174961.242    0    6 177161.779 174961.242  1.24%     -    1s
H   27    10                    176454.02017 175406.778  0.59%  30.3    1s
*   54    18              25    176398.43376 175406.778  0.56%  19.5    2s
*   72     2              18    176246.50927 176014.180  0.13%  25.5    2s
*   75     1              11    176198.97748 176185.485  0.01%  25.4    2s

Cutting planes:
  Flow cover: 7

Explored 76 nodes (4216 simplex iterations) in 2.47 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.761989774784e+05, best bound 1.761854852511e+05, gap 0.0077%