Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:48:50 2013

Optimize a model with 2280 rows, 10040 columns and 24020 nonzeros
Presolve removed 40 rows and 60 columns
Presolve time: 0.18s
Presolved: 2240 rows, 9980 columns, 19960 nonzeros
Variable types: 8000 continuous, 1980 integer (1980 binary)

Root relaxation: objective 4.636776e+04, 582 iterations, 0.01 seconds

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

     0     0 46367.7551    0    2          - 46367.7551     -      -    0s
     0     0 46373.5787    0    4          - 46373.5787     -      -    0s
     0     0 46373.8579    0    4          - 46373.8579     -      -    0s
     0     0 46373.8579    0    4          - 46373.8579     -      -    0s
     0     2 46375.2100    0    4          - 46375.2100     -      -    0s
*  367   164             364    46976.124040 46430.1327  1.16%   2.2    2s
*  448    74              34    46795.050106 46441.8083  0.75%   3.2    2s
*  450    68              33    46793.522924 46441.8083  0.75%   3.2    2s
H  532   109                    46783.923168 46442.5132  0.73%   4.9    2s
*  598   122              31    46769.855842 46446.0353  0.69%   4.8    2s
*  670   157              30    46752.456835 46463.9258  0.62%   4.8    2s
*  710   175              31    46743.444126 46470.9988  0.58%   5.1    2s
*  731   176              29    46734.293778 46472.6373  0.56%   5.0    2s
*  787   189              29    46730.568254 46478.2885  0.54%   5.2    3s
*  789   188              29    46726.347711 46478.2885  0.53%   5.2    3s
*  815   195              29    46718.207724 46490.7516  0.49%   5.5    3s
*  836   197              29    46709.875495 46498.5560  0.45%   5.7    3s
*  881   207              30    46692.613435 46513.3940  0.38%   5.9    3s
*  903   203              30    46683.698363 46519.8633  0.35%   6.1    3s
*  950   194              29    46675.437126 46528.6649  0.31%   6.3    3s
*  977   184              29    46670.530823 46538.4869  0.28%   6.6    3s
* 1004   169              29    46665.640449 46549.5752  0.25%   6.9    3s
* 1031   155              28    46662.476019 46560.7276  0.22%   7.1    3s
* 1096   125              28    46658.775094 46589.5530  0.15%   7.7    3s
* 1125   106              27    46657.323286 46606.6811  0.11%   8.1    4s
* 1170    67              27    46655.691239 46622.1269  0.07%   8.1    4s
* 1217    28              27    46653.879319 46638.2431  0.03%   8.1    4s

Cutting planes:
  Gomory: 2
  Flow cover: 3

Explored 1237 nodes (10789 simplex iterations) in 4.31 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.665387931899e+04, best bound 4.664956635902e+04, gap 0.0092%