Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:58:56 2013

Optimize a model with 440 rows, 16040 columns and 32040 nonzeros
Presolve time: 0.02s
Presolved: 440 rows, 16040 columns, 32040 nonzeros
Variable types: 16000 continuous, 40 integer (40 binary)

Root relaxation: objective 4.026572e+04, 677 iterations, 0.01 seconds

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

     0     0 40265.7232    0    7          - 40265.7232     -      -    0s
H    0     0                    42603.000000 40265.7232  5.49%     -    0s
     0     0 40479.3932    0    3 42603.0000 40479.3932  4.98%     -    0s
H    0     0                    41485.170940 40479.3932  2.42%     -    0s
H    0     0                    41379.000000 40479.3932  2.17%     -    0s
H    0     0                    40524.000000 40479.3932  0.11%     -    0s
     0     0 40495.3998    0    3 40524.0000 40495.3998  0.07%     -    0s
     0     0 40510.7514    0    4 40524.0000 40510.7514  0.03%     -    0s
     0     0 40516.5111    0    2 40524.0000 40516.5111  0.02%     -    0s
     0     0 40516.8667    0    2 40524.0000 40516.8667  0.02%     -    0s
     0     0 40516.8667    0    2 40524.0000 40516.8667  0.02%     -    0s
     0     0 40517.0952    0    2 40524.0000 40517.0952  0.02%     -    0s
     0     0     cutoff    0      40524.0000 40524.0000   0.0%     -    0s

Cutting planes:
  Implied bound: 43
  Flow cover: 7

Explored 0 nodes (889 simplex iterations) in 0.24 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.052400000000e+04, best bound 4.052400000000e+04, gap 0.0%