Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:13 2012

Optimize a model with 453 rows, 98 columns and 906 nonzeros
Presolve removed 139 rows and 0 columns
Presolve time: 0.00s
Presolved: 314 rows, 98 columns, 752 nonzeros
Variable types: 0 continuous, 98 integer (98 binary)
Found heuristic solution: objective 30.0000000

Root relaxation: objective 3.723333e+01, 227 iterations, 0.00 seconds

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

     0     0   37.23333    0   91   30.00000   37.23333  24.1%     -    0s
H    0     0                      31.0000000   37.23333  20.1%     -    0s
     0     0   36.09375    0   91   31.00000   36.09375  16.4%     -    0s
     0     0   35.70427    0   94   31.00000   35.70427  15.2%     -    0s
     0     0   35.50000    0   97   31.00000   35.50000  14.5%     -    0s
     0     0   35.40864    0   96   31.00000   35.40864  14.2%     -    0s
     0     0   35.29573    0   96   31.00000   35.29573  13.9%     -    0s
     0     0   35.25732    0   96   31.00000   35.25732  13.7%     -    0s
     0     0   35.22996    0   94   31.00000   35.22996  13.6%     -    0s
     0     0   35.19956    0   97   31.00000   35.19956  13.5%     -    0s
H    0     0                      32.0000000   35.19956  10.0%     -    0s
     0     0   35.15021    0   97   32.00000   35.15021  9.84%     -    0s
     0     0   35.12340    0   97   32.00000   35.12340  9.76%     -    0s
     0     0   35.12340    0   97   32.00000   35.12340  9.76%     -    0s
     0     2   35.12340    0   97   32.00000   35.12340  9.76%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 66

Explored 73 nodes (2831 simplex iterations) in 0.14 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%