Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:31 2012

Optimize a model with 512 rows, 103 columns and 1024 nonzeros
Presolve removed 171 rows and 0 columns
Presolve time: 0.00s
Presolved: 341 rows, 103 columns, 830 nonzeros
Variable types: 0 continuous, 103 integer (103 binary)
Found heuristic solution: objective 28.0000000

Root relaxation: objective 3.768750e+01, 209 iterations, 0.00 seconds

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

     0     0   37.68750    0   98   28.00000   37.68750  34.6%     -    0s
H    0     0                      29.0000000   37.68750  30.0%     -    0s
     0     0   36.86538    0   99   29.00000   36.86538  27.1%     -    0s
     0     0   36.24295    0  103   29.00000   36.24295  25.0%     -    0s
H    0     0                      30.0000000   36.24295  20.8%     -    0s
     0     0   35.77188    0  101   30.00000   35.77188  19.2%     -    0s
     0     0   35.69527    0  101   30.00000   35.69527  19.0%     -    0s
     0     0   35.53097    0  100   30.00000   35.53097  18.4%     -    0s
     0     0   35.35275    0  100   30.00000   35.35275  17.8%     -    0s
     0     0   35.30215    0  101   30.00000   35.30215  17.7%     -    0s
     0     0   35.24063    0  102   30.00000   35.24063  17.5%     -    0s
     0     0   35.22089    0  102   30.00000   35.22089  17.4%     -    0s
     0     0   35.22089    0  102   30.00000   35.22089  17.4%     -    0s
H    0     0                      31.0000000   35.22089  13.6%     -    0s
     0     2   35.21848    0  102   31.00000   35.21848  13.6%     -    0s
*  165    13               6      32.0000000   33.77778  5.56%  28.7    0s

Cutting planes:
  Zero half: 61

Explored 190 nodes (5898 simplex iterations) in 0.25 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%