Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:53:46 2013

Optimize a model with 640 rows, 14240 columns and 118620 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.23s
Presolved: 620 rows, 14220 columns, 108600 nonzeros
Variable types: 14040 continuous, 180 integer (180 binary)

Root relaxation: objective 3.709539e+04, 463 iterations, 0.02 seconds

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

     0     0 37095.3933    0   12          - 37095.3933     -      -    0s
     0     0 37095.8421    0   12          - 37095.8421     -      -    0s
     0     0 37095.9889    0   14          - 37095.9889     -      -    0s
     0     0 37096.1368    0    9          - 37096.1368     -      -    0s
     0     0 37096.1490    0   11          - 37096.1490     -      -    0s
     0     0 37096.1490    0   11          - 37096.1490     -      -    0s
     0     0 37096.1490    0   11          - 37096.1490     -      -    0s
     0     0 37096.1490    0   11          - 37096.1490     -      -    0s
     0     0 37096.1490    0   11          - 37096.1490     -      -    1s
     0     2 37096.8369    0   11          - 37096.8369     -      -    2s
*   36    20              34    37260.156075 37101.8274  0.42%   6.8    3s
H   38    16                    37259.138696 37101.8274  0.42%   6.4    3s
*   59    24              22    37254.493689 37114.0703  0.38%   6.9    3s
*  112    31              13    37253.975815 37243.0008  0.03%   6.4    3s

Cutting planes:
  Flow cover: 13

Explored 134 nodes (1775 simplex iterations) in 3.68 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.725397581451e+04, best bound 3.725047322475e+04, gap 0.0094%