Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:53 2012

Optimize a model with 580 rows, 107 columns and 1160 nonzeros
Presolve removed 224 rows and 1 columns
Presolve time: 0.00s
Presolved: 356 rows, 106 columns, 891 nonzeros
Variable types: 0 continuous, 106 integer (106 binary)
Found heuristic solution: objective 30.0000000

Root relaxation: objective 3.875661e+01, 244 iterations, 0.00 seconds

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

     0     0   38.75661    0  104   30.00000   38.75661  29.2%     -    0s
     0     0   38.19446    0  103   30.00000   38.19446  27.3%     -    0s
     0     0   38.02427    0  106   30.00000   38.02427  26.7%     -    0s
     0     0   37.55303    0  105   30.00000   37.55303  25.2%     -    0s
     0     0   37.44265    0  105   30.00000   37.44265  24.8%     -    0s
     0     0   37.38109    0  104   30.00000   37.38109  24.6%     -    0s
     0     0   37.26895    0  105   30.00000   37.26895  24.2%     -    0s
     0     0   37.16742    0  105   30.00000   37.16742  23.9%     -    0s
     0     0   37.10056    0  104   30.00000   37.10056  23.7%     -    0s
     0     0   37.10034    0  104   30.00000   37.10034  23.7%     -    0s
     0     2   37.09876    0  104   30.00000   37.09876  23.7%     -    0s
*    7     7               6      32.0000000   37.08937  15.9%  47.4    0s

Cutting planes:
  Clique: 1
  Zero half: 54

Explored 378 nodes (10637 simplex iterations) in 0.40 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%