Optimize a model with 225 rows, 25200 columns and 50400 nonzeros
Presolve time: 0.13s
Presolved: 225 rows, 25200 columns, 50400 nonzeros
Variable types: 0 continuous, 25200 integer (25200 binary)

Root relaxation: objective 3.757500e+03, 339 iterations, 0.01 seconds

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

     0     0 3757.50000    0   36          - 3757.50000     -      -    0s
     0     0 3774.00000    0   38          - 3774.00000     -      -    0s
     0     0 3778.83333    0   38          - 3778.83333     -      -    0s
     0     0 3788.00000    0   48          - 3788.00000     -      -    0s
     0     0 3792.16667    0   59          - 3792.16667     -      -    0s
     0     0 3795.29167    0   59          - 3795.29167     -      -    0s
     0     0 3797.25000    0   35          - 3797.25000     -      -    0s
     0     0 3797.87500    0   37          - 3797.87500     -      -    0s
     0     0 3798.88889    0   29          - 3798.88889     -      -    0s
     0     0 3799.20000    0   28          - 3799.20000     -      -    0s
     0     0 3799.90000    0   16          - 3799.90000     -      -    0s
     0     0 3799.96667    0   34          - 3799.96667     -      -    0s
     0     0 3799.96667    0   30          - 3799.96667     -      -    0s
     0     2 3799.97727    0   30          - 3799.97727     -      -    1s
   345   347 4138.00000  278    6          - 3812.06250     -    4.6    5s
*  743   743             592    4813.0000000 3812.06250  20.8%   4.8    8s
   855   845 3939.50000   78    8 4813.00000 3812.31250  20.8%   4.8   10s
   906   893 3900.56250   15   55 4813.00000 3900.56250  19.0%   4.8   16s
   908   895 3904.04167   44  110 4813.00000 3904.04167  18.9%   4.8   20s
   910   896 4014.00000  147  134 4813.00000 3905.66901  18.9%   4.8   28s
   911   897 4402.50000  455  119 4813.00000 3906.02382  18.8%   4.8   31s
   913   898 3908.84952   44  159 4813.00000 3908.84952  18.8%   4.8   36s
   915   899 4081.00000  210  137 4813.00000 3910.57593  18.7%   4.7   41s
   917   901 4530.50000  492  158 4813.00000 3910.62913  18.7%   4.7   45s
   922   906 3911.32331   16   93 4813.00000 3911.06852  18.7%   6.3   50s
   972   939 3933.50000   41   10 4813.00000 3911.21675  18.7%   7.1   58s
  1050   991 4027.50000   80   12 4813.00000 3911.21675  18.7%   7.4   60s
* 1120   973             115    4052.0000000 3911.21675  3.47%   7.5   61s
* 1141   806              28    3932.0000000 3911.26403  0.53%   7.7   62s
H 1300   675                    3916.0000000 3911.43182  0.12%   8.9   64s
  1301   670 3912.60628   21   30 3916.00000 3911.43182  0.12%   8.9   65s

Cutting planes:
  Gomory: 16
  Clique: 1
  Zero half: 15

Explored 1317 nodes (12620 simplex iterations) in 65.47 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.916000000000e+03, best bound 3.916000000000e+03, gap 0.0%

Gurobi 5.0.1 (linux64) logging started Sun Nov 25 06:02:02 2012