Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:50:32 2013

Optimize a model with 560 rows, 6200 columns and 26500 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.03s
Presolved: 540 rows, 6180 columns, 24480 nonzeros
Variable types: 6040 continuous, 140 integer (140 binary)

Root relaxation: objective 3.839329e+04, 497 iterations, 0.01 seconds

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

     0     0 38393.2919    0    6          - 38393.2919     -      -    0s
     0     0 38396.3100    0    6          - 38396.3100     -      -    0s
     0     0 38399.6615    0    8          - 38399.6615     -      -    0s
     0     0 38400.3836    0    9          - 38400.3836     -      -    0s
     0     0 38403.1600    0    9          - 38403.1600     -      -    0s
     0     0 38403.3636    0    9          - 38403.3636     -      -    0s
     0     0 38403.7882    0    9          - 38403.7882     -      -    0s
     0     0 38404.2233    0   12          - 38404.2233     -      -    0s
     0     0 38404.2233    0   12          - 38404.2233     -      -    0s
     0     0 38404.2233    0   12          - 38404.2233     -      -    0s
H    0     0                    41095.864842 38404.2233  6.55%     -    0s
     0     2 38405.2197    0   12 41095.8648 38405.2197  6.55%     -    0s
H   27    10                    38638.338544 38514.9107  0.32%  10.7    0s
*   35    11              34    38638.290847 38514.9107  0.32%   8.9    0s

Cutting planes:
  Flow cover: 10

Explored 40 nodes (994 simplex iterations) in 0.69 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.863829084685e+04, best bound 3.863464296250e+04, gap 0.0094%