Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:43:42 2013

Optimize a model with 380 rows, 4340 columns and 8820 nonzeros
Presolve removed 40 rows and 60 columns
Presolve time: 0.01s
Presolved: 340 rows, 4280 columns, 8560 nonzeros
Variable types: 4200 continuous, 80 integer (80 binary)

Root relaxation: objective 3.839329e+04, 426 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    2          - 38393.2919     -      -    0s
     0     0 38444.9985    0    3          - 38444.9985     -      -    0s
     0     0 38497.5898    0    2          - 38497.5898     -      -    0s
     0     0 38501.3837    0    2          - 38501.3837     -      -    0s
     0     0 38504.7606    0    2          - 38504.7606     -      -    0s
     0     0 38506.8151    0    2          - 38506.8151     -      -    0s
     0     0 38506.8151    0    2          - 38506.8151     -      -    0s
     0     0 38506.8151    0    2          - 38506.8151     -      -    0s
     0     0 38506.8151    0    2          - 38506.8151     -      -    0s
H    0     0                    38645.010978 38506.8151  0.36%     -    0s
     0     2 38526.2870    0    1 38645.0110 38526.2870  0.31%     -    0s
*   10     1               5    38632.970298 38632.5462  0.00%  14.4    0s

Cutting planes:
  Flow cover: 12

Explored 11 nodes (651 simplex iterations) in 0.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.863297029776e+04, best bound 3.863254624307e+04, gap 0.0011%