Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:43:46 2013

Optimize a model with 400 rows, 4420 columns and 9340 nonzeros
Presolve removed 20 rows and 140 columns
Presolve time: 0.01s
Presolved: 380 rows, 4280 columns, 9140 nonzeros
Variable types: 4220 continuous, 60 integer (60 binary)

Root relaxation: objective 3.839329e+04, 476 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 38502.7506    0    2          - 38502.7506     -      -    0s
     0     0 38504.3586    0    2          - 38504.3586     -      -    0s
     0     0 38504.3586    0    2          - 38504.3586     -      -    0s
     0     0 38504.3586    0    2          - 38504.3586     -      -    0s
     0     0 38504.3586    0    2          - 38504.3586     -      -    0s
H    0     0                    41440.903298 38504.3586  7.09%     -    0s
     0     2 38507.3800    0    2 41440.9033 38507.3800  7.08%     -    0s
*   13     5              13    38645.010978 38520.1619  0.32%  14.3    0s
*   21     4               8    38632.970298 38602.4483  0.08%  11.7    0s

Cutting planes:
  Flow cover: 8

Explored 25 nodes (858 simplex iterations) in 0.22 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.863297029776e+04, best bound 3.863297029776e+04, gap 0.0%