Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:41:32 2013

Optimize a model with 1280 rows, 7040 columns and 16020 nonzeros
Presolve removed 40 rows and 60 columns
Presolve time: 0.09s
Presolved: 1240 rows, 6980 columns, 13960 nonzeros
Variable types: 6000 continuous, 980 integer (980 binary)

Root relaxation: objective 3.709539e+04, 410 iterations, 0.01 seconds

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

     0     0 37095.3933    0    4          - 37095.3933     -      -    0s
     0     0 37103.8745    0    5          - 37103.8745     -      -    0s
     0     0 37106.5374    0    4          - 37106.5374     -      -    0s
     0     0 37106.5374    0    4          - 37106.5374     -      -    0s
H    0     0                    37335.944962 37106.5374  0.61%     -    0s
     0     2 37114.3805    0    4 37335.9450 37114.3805  0.59%     -    0s
*   13    13              10    37267.283009 37139.5697  0.34%   9.2    0s
*   30    15              10    37265.433302 37146.3626  0.32%   7.7    0s
*   32    14              10    37264.080950 37146.3626  0.32%   7.3    0s
*   54    19              15    37254.115825 37155.7678  0.26%   5.7    0s
*  120    20               4    37253.444027 37238.7043  0.04%   5.2    0s

Cutting planes:
  Gomory: 3
  Flow cover: 5

Explored 150 nodes (1549 simplex iterations) in 0.56 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.725344402687e+04, best bound 3.724976949899e+04, gap 0.0099%