Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:41:11 2013

Optimize a model with 2280 rows, 6040 columns and 16020 nonzeros
Presolve removed 60 rows and 40 columns
Presolve time: 0.10s
Presolved: 2220 rows, 6000 columns, 13960 nonzeros
Variable types: 5020 continuous, 980 integer (980 binary)

Root relaxation: objective 3.709539e+04, 1000 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    4          - 37095.3933     -      -    0s
     0     0 37136.8216    0    2          - 37136.8216     -      -    0s
H    0     0                    37393.436008 37136.8216  0.69%     -    0s
     0     0 37136.8216    0    2 37393.4360 37136.8216  0.69%     -    0s
     0     0 37136.8216    0    2 37393.4360 37136.8216  0.69%     -    0s
     0     2 37153.5806    0    2 37393.4360 37153.5806  0.64%     -    0s
H   14    14                    37264.730677 37183.6061  0.22%   9.8    0s
H   15    14                    37264.208611 37183.6061  0.22%  11.1    0s
*   16    14              13    37257.461439 37183.6061  0.20%  11.2    0s
*   41    19              16    37253.444027 37193.6868  0.16%   6.3    0s

Cutting planes:
  Gomory: 3
  Flow cover: 8

Explored 147 nodes (2164 simplex iterations) in 0.67 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.725344402687e+04, best bound 3.724994748562e+04, gap 0.0094%