Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:59:27 2013

Optimize a model with 17261 rows, 16851 columns and 67281 nonzeros
Presolve removed 954 rows and 0 columns
Presolve time: 0.09s
Presolved: 16307 rows, 16851 columns, 65373 nonzeros
Variable types: 16810 continuous, 41 integer (41 binary)

Root relaxation: objective 4.406689e+04, 2757 iterations, 0.19 seconds

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

     0     0 44066.8900    0    6          - 44066.8900     -      -    0s
H    0     0                    44838.000000 44066.8900  1.72%     -    0s
H    0     0                    44687.000000 44066.8900  1.39%     -    0s
H    0     0                    44208.000000 44066.8900  0.32%     -    0s
     0     0 44067.6936    0    6 44208.0000 44067.6936  0.32%     -    0s
     0     0 44068.1362    0    6 44208.0000 44068.1362  0.32%     -    0s
     0     0 44116.8153    0    5 44208.0000 44116.8153  0.21%     -    0s
     0     0 44117.0024    0    3 44208.0000 44117.0024  0.21%     -    0s
H    0     0                    44166.000000 44117.0024  0.11%     -    0s
     0     0 44145.7408    0    2 44166.0000 44145.7408  0.05%     -    1s
     0     0 44145.9376    0    4 44166.0000 44145.9376  0.05%     -    1s
     0     0 44145.9376    0    4 44166.0000 44145.9376  0.05%     -    1s
     0     0 44150.6839    0    2 44166.0000 44150.6839  0.03%     -    1s
     0     0 44164.5517    0    1 44166.0000 44164.5517  0.00%     -    1s

Cutting planes:
  Flow cover: 1

Explored 0 nodes (3932 simplex iterations) in 1.22 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.416600000000e+04, best bound 4.416455172414e+04, gap 0.0033%