Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:11 2012

Optimize a model with 441 rows, 97 columns and 882 nonzeros
Presolve removed 129 rows and 0 columns
Presolve time: 0.00s
Presolved: 312 rows, 97 columns, 732 nonzeros
Variable types: 0 continuous, 97 integer (97 binary)
Found heuristic solution: objective 29.0000000

Root relaxation: objective 3.769231e+01, 184 iterations, 0.00 seconds

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

     0     0   37.69231    0   88   29.00000   37.69231  30.0%     -    0s
H    0     0                      31.0000000   37.69231  21.6%     -    0s
     0     0   37.00000    0   94   31.00000   37.00000  19.4%     -    0s
     0     0   36.62500    0   96   31.00000   36.62500  18.1%     -    0s
     0     0   36.13043    0   97   31.00000   36.13043  16.5%     -    0s
     0     0   35.72062    0   92   31.00000   35.72062  15.2%     -    0s
H    0     0                      32.0000000   35.72062  11.6%     -    0s
     0     0   35.41846    0   94   32.00000   35.41846  10.7%     -    0s
     0     0   35.11978    0   96   32.00000   35.11978  9.75%     -    0s
     0     0   35.03993    0   96   32.00000   35.03993  9.50%     -    0s
     0     0   35.02594    0   96   32.00000   35.02594  9.46%     -    0s
     0     0   35.02594    0   96   32.00000   35.02594  9.46%     -    0s
     0     2   35.02555    0   96   32.00000   35.02555  9.45%     -    0s

Cutting planes:
  Clique: 1
  Zero half: 60

Explored 41 nodes (1912 simplex iterations) in 0.11 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%