Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:35 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 4.642213e+04, 510 iterations, 0.01 seconds

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

     0     0 46422.1265    0    3          - 46422.1265     -      -    0s
     0     0 46445.9561    0    4          - 46445.9561     -      -    0s
     0     0 46446.7400    0    5          - 46446.7400     -      -    0s
     0     0 46447.9283    0    4          - 46447.9283     -      -    0s
     0     0 46447.9283    0    4          - 46447.9283     -      -    0s
     0     0 46447.9283    0    4          - 46447.9283     -      -    0s
     0     0 46447.9283    0    4          - 46447.9283     -      -    0s
H    0     0                    47377.636012 46447.9283  1.96%     -    0s
     0     2 46460.7008    0    4 47377.6360 46460.7008  1.94%     -    0s
*   19    19              15    47123.796598 46505.7588  1.31%  12.3    0s
*   22    15              14    47097.762112 46505.7588  1.26%  11.9    0s
H   27    18                    47079.995306 46510.1414  1.21%  12.5    0s
*   37    27              13    47041.725856 46510.1414  1.13%  13.5    0s
*   42    23              13    47017.985609 46510.1414  1.08%  13.4    0s
H   54    17                    46835.024957 46514.0274  0.69%  14.0    0s
*   58    16              12    46833.104537 46514.0274  0.68%  14.3    0s
H   81    33                    46826.971165 46531.2027  0.63%  17.2    0s
*   89    30              12    46817.437441 46531.2027  0.61%  17.1    0s
H  135    23                    46797.785654 46604.0961  0.41%  16.6    0s
*  200    20              11    46778.790183 46642.8638  0.29%  16.2    0s
*  231    15              10    46757.920900 46651.9434  0.23%  15.9    0s
*  234    12               9    46757.522593 46651.9434  0.23%  16.0    0s
*  265     4              10    46743.553085 46704.5257  0.08%  15.9    0s

Cutting planes:
  Gomory: 3
  Flow cover: 10

Explored 269 nodes (4910 simplex iterations) in 0.63 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.674355308496e+04, best bound 4.673989184540e+04, gap 0.0078%