Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:37 2013

Optimize a model with 680 rows, 5240 columns and 11220 nonzeros
Presolve removed 40 rows and 60 columns
Presolve time: 0.02s
Presolved: 640 rows, 5180 columns, 10360 nonzeros
Variable types: 4800 continuous, 380 integer (380 binary)

Root relaxation: objective 4.370285e+04, 559 iterations, 0.01 seconds

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

     0     0 43702.8549    0    2          - 43702.8549     -      -    0s
     0     0 43725.2798    0    2          - 43725.2798     -      -    0s
     0     0 43725.3472    0    2          - 43725.3472     -      -    0s
     0     0 43727.7092    0    1          - 43727.7092     -      -    0s
     0     0 43727.7092    0    1          - 43727.7092     -      -    0s
     0     0 43727.7092    0    1          - 43727.7092     -      -    0s
     0     0 43727.7092    0    1          - 43727.7092     -      -    0s
H    0     0                    47711.652382 43727.7092  8.35%     -    0s
     0     2 43730.6678    0    1 47711.6524 43730.6678  8.34%     -    0s
H   54    42                    44103.040138 43840.4773  0.60%   8.7    0s
*   94    48              38    44040.004780 43872.8933  0.38%   8.0    0s
*  103     5               5    43900.745969 43888.0299  0.03%   7.8    0s

Cutting planes:
  Gomory: 2
  Flow cover: 8

Explored 108 nodes (1609 simplex iterations) in 0.51 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.390074596881e+04, best bound 4.389838531774e+04, gap 0.0054%