Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:50:21 2012

Optimize a model with 574 rows, 109 columns and 1148 nonzeros
Presolve removed 186 rows and 0 columns
Presolve time: 0.00s
Presolved: 388 rows, 109 columns, 944 nonzeros
Variable types: 0 continuous, 109 integer (109 binary)
Found heuristic solution: objective 29.0000000

Root relaxation: objective 3.962195e+01, 253 iterations, 0.00 seconds

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

     0     0   39.62195    0  102   29.00000   39.62195  36.6%     -    0s
     0     0   38.68862    0  107   29.00000   38.68862  33.4%     -    0s
     0     0   37.95745    0  106   29.00000   37.95745  30.9%     -    0s
     0     0   37.67411    0  107   29.00000   37.67411  29.9%     -    0s
     0     0   37.44855    0  108   29.00000   37.44855  29.1%     -    0s
     0     0   37.31846    0  107   29.00000   37.31846  28.7%     -    0s
     0     0   37.31125    0  108   29.00000   37.31125  28.7%     -    0s
     0     0   37.31125    0  108   29.00000   37.31125  28.7%     -    0s
H    0     0                      30.0000000   37.31125  24.4%     -    0s
     0     2   37.30719    0  108   30.00000   37.30719  24.4%     -    0s
H   38    21                      31.0000000   37.07221  19.6%  34.6    0s
   621   179   33.60000    9  109   31.00000   34.50000  11.3%  22.0    5s
*  804   175              25      32.0000000   34.50000  7.81%  27.3    6s

Cutting planes:
  Gomory: 1
  Clique: 3
  Zero half: 75

Explored 1135 nodes (29055 simplex iterations) in 6.40 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%