Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:47:15 2013

Optimize a model with 680 rows, 24260 columns and 248680 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.44s
Presolved: 660 rows, 24240 columns, 228660 nonzeros
Variable types: 24040 continuous, 200 integer (200 binary)

Root relaxation: objective 3.573401e+04, 491 iterations, 0.03 seconds

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

     0     0 35734.0139    0    9          - 35734.0139     -      -    0s
     0     0 35734.2701    0    9          - 35734.2701     -      -    0s
     0     0 35734.2905    0    9          - 35734.2905     -      -    1s
     0     0 35734.3592    0    9          - 35734.3592     -      -    1s
     0     0 35734.4171    0    9          - 35734.4171     -      -    1s
     0     0 35734.4553    0    9          - 35734.4553     -      -    1s
     0     0 35734.4591    0    9          - 35734.4591     -      -    1s
     0     0 35734.4591    0    9          - 35734.4591     -      -    1s
     0     0 35734.4688    0    9          - 35734.4688     -      -    1s
     0     0 35734.4688    0    9          - 35734.4688     -      -    2s
     0     0 35734.4688    0    9          - 35734.4688     -      -    2s
     0     2 35735.0538    0    9          - 35735.0538     -      -    5s
*   32    16              29    36181.017452 35751.5014  1.19%  10.2    5s
H   62    29                    36180.037109 35769.7427  1.13%   9.2    5s
*   63    29              27    36180.026831 35769.7427  1.13%   9.1    5s
*   85    29              16    36179.547500 35805.5904  1.03%   9.8    6s
*  120    25              24    36175.618629 36169.4258  0.02%   9.7    6s
*  157    18              23    36175.538038 36169.5234  0.02%   8.1    6s
*  173    23              20    36174.795049 36169.5234  0.01%   7.7    6s
*  174    22              20    36174.782147 36169.5234  0.01%   7.6    6s
*  176    19              18    36174.630451 36169.5234  0.01%   7.6    6s

Cutting planes:
  Flow cover: 12

Explored 181 nodes (2329 simplex iterations) in 6.63 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.617463045082e+04, best bound 3.617119449906e+04, gap 0.0095%