Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:48:55 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 4.642213e+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 46422.1265    0    3          - 46422.1265     -      -    0s
     0     0 46427.6843    0    4          - 46427.6843     -      -    0s
     0     0 46427.9944    0    4          - 46427.9944     -      -    0s
     0     0 46428.0248    0    4          - 46428.0248     -      -    0s
     0     0 46428.0248    0    4          - 46428.0248     -      -    0s
     0     2 46429.5003    0    4          - 46429.5003     -      -    0s
*   92    76              86    46854.981221 46464.5605  0.83%   3.6    1s
*   95    72              85    46853.916275 46464.5605  0.83%   3.6    1s
*  125    61              46    46764.275444 46466.3356  0.64%   4.5    1s
*  359   207              37    46759.652369 46491.4673  0.57%   6.3    1s
H  715   322                    46745.277142 46503.3176  0.52%   8.9    3s
*  718   307              47    46743.805835 46503.3176  0.51%   8.9    3s
  1681   567 46677.8781   40    1 46743.8058 46533.2650  0.45%   6.9    5s
  5321  2187     cutoff   29      46743.8058 46621.2945  0.26%   5.9   10s
  8229  1830     cutoff   36      46743.8058 46675.3151  0.15%   7.1   15s
 10929   163 46743.3638   45    1 46743.8058 46728.6390  0.03%   7.5   20s

Cutting planes:
  Gomory: 2
  Flow cover: 4

Explored 11100 nodes (83428 simplex iterations) in 20.49 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.674380583461e+04, best bound 4.673951286083e+04, gap 0.0092%