Gurobi 5.0.1 (linux64) logging started Tue Dec 25 15:32:46 2012

Optimize a model with 902 rows, 840 columns and 3520 nonzeros
Presolve removed 251 rows and 40 columns
Presolve time: 0.03s
Presolved: 651 rows, 800 columns, 3174 nonzeros
Variable types: 380 continuous, 420 integer (420 binary)

Root relaxation: objective 1.630680e+02, 655 iterations, 0.01 seconds

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

     0     0  163.06800    0   30          -  163.06800     -      -    0s
     0     0  170.77967    0   53          -  170.77967     -      -    0s
     0     0  172.24419    0   52          -  172.24419     -      -    0s
     0     0  172.38578    0   54          -  172.38578     -      -    0s
     0     0  172.44951    0   54          -  172.44951     -      -    0s
     0     0  172.44951    0   55          -  172.44951     -      -    0s
     0     0  172.44951    0   54          -  172.44951     -      -    0s
     0     2  172.48540    0   54          -  172.48540     -      -    0s
H  615   489                     217.0000000  176.17146  18.8%  31.4    1s
H  751   485                     210.0000000  183.33867  12.7%  37.7    2s
* 1257   519              35     209.0000000  187.27576  10.4%  40.3    4s
  1592   506  195.63812   55   34  209.00000  190.69981  8.76%  38.4    5s
* 2679   552              40     208.0000000  194.94857  6.27%  34.1    6s
H 3097   527                     205.0000000  196.17055  4.31%  32.5    6s
* 3521   341              33     203.0000000  198.01296  2.46%  31.3    7s

Cutting planes:
  Gomory: 17
  Cover: 2
  Implied bound: 80
  Flow cover: 52
  Zero half: 4

Explored 3991 nodes (117030 simplex iterations) in 7.51 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.030000000000e+02, best bound 2.030000000000e+02, gap 0.0%