Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:51 2012

Optimize a model with 543 rows, 106 columns and 1086 nonzeros
Presolve removed 176 rows and 0 columns
Presolve time: 0.00s
Presolved: 367 rows, 106 columns, 884 nonzeros
Variable types: 0 continuous, 106 integer (106 binary)
Found heuristic solution: objective 29.0000000

Root relaxation: objective 3.835629e+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   38.35629    0  102   29.00000   38.35629  32.3%     -    0s
H    0     0                      30.0000000   38.35629  27.9%     -    0s
     0     0   37.67628    0  101   30.00000   37.67628  25.6%     -    0s
H    0     0                      31.0000000   37.67628  21.5%     -    0s
     0     0   37.28365    0  102   31.00000   37.28365  20.3%     -    0s
     0     0   37.03785    0  100   31.00000   37.03785  19.5%     -    0s
     0     0   36.60000    0   96   31.00000   36.60000  18.1%     -    0s
     0     0   36.48387    0  100   31.00000   36.48387  17.7%     -    0s
     0     0   36.18889    0  102   31.00000   36.18889  16.7%     -    0s
     0     0   36.16704    0  102   31.00000   36.16704  16.7%     -    0s
     0     0   36.13158    0  100   31.00000   36.13158  16.6%     -    0s
     0     0   36.12004    0  100   31.00000   36.12004  16.5%     -    0s
     0     0   36.12004    0  100   31.00000   36.12004  16.5%     -    0s
     0     2   36.11910    0  100   31.00000   36.11910  16.5%     -    0s
H   44    12                      33.0000000   35.77330  8.40%  24.7    0s

Cutting planes:
  Zero half: 54

Explored 83 nodes (3014 simplex iterations) in 0.18 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%