Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:53:14 2013

Optimize a model with 8148 rows, 7868 columns and 31388 nonzeros
Presolve removed 1003 rows and 0 columns
Presolve time: 0.05s
Presolved: 7145 rows, 7868 columns, 29382 nonzeros
Variable types: 7840 continuous, 28 integer (28 binary)

Root relaxation: objective 3.876469e+04, 1422 iterations, 0.06 seconds

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

     0     0 38764.6854    0    2          - 38764.6854     -      -    0s
H    0     0                    38900.000000 38764.6854  0.35%     -    0s
     0     0 38767.5100    0    3 38900.0000 38767.5100  0.34%     -    0s
     0     0 38767.5472    0    3 38900.0000 38767.5472  0.34%     -    0s
     0     0 38776.3632    0    4 38900.0000 38776.3632  0.32%     -    0s
     0     0 38777.6807    0    2 38900.0000 38777.6807  0.31%     -    0s
     0     2 38779.0000    0    2 38900.0000 38779.0000  0.31%     -    0s
*    2     2               2    38822.000000 38822.0000   0.0%  18.0    0s

Cutting planes:
  Gomory: 1
  Flow cover: 1

Explored 3 nodes (1560 simplex iterations) in 0.41 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.882200000000e+04, best bound 3.882200000000e+04, gap 0.0%