Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:50:36 2012

Optimize a model with 596 rows, 110 columns and 1192 nonzeros
Presolve removed 216 rows and 0 columns
Presolve time: 0.00s
Presolved: 380 rows, 110 columns, 940 nonzeros
Variable types: 0 continuous, 110 integer (110 binary)
Found heuristic solution: objective 28.0000000

Root relaxation: objective 3.900240e+01, 246 iterations, 0.00 seconds

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

     0     0   39.00240    0  106   28.00000   39.00240  39.3%     -    0s
H    0     0                      30.0000000   39.00240  30.0%     -    0s
     0     0   38.06655    0  108   30.00000   38.06655  26.9%     -    0s
     0     0   37.87215    0  108   30.00000   37.87215  26.2%     -    0s
     0     0   37.78162    0  109   30.00000   37.78162  25.9%     -    0s
     0     0   37.57730    0  108   30.00000   37.57730  25.3%     -    0s
     0     0   37.52240    0  109   30.00000   37.52240  25.1%     -    0s
     0     0   37.46922    0  107   30.00000   37.46922  24.9%     -    0s
     0     0   37.40263    0  108   30.00000   37.40263  24.7%     -    0s
     0     0   37.39375    0  110   30.00000   37.39375  24.6%     -    0s
     0     0   37.39375    0  110   30.00000   37.39375  24.6%     -    0s
     0     2   37.38705    0  110   30.00000   37.38705  24.6%     -    0s
*   40    17               8      31.0000000   36.91108  19.1%  25.4    0s
*   91    32              12      32.0000000   36.09740  12.8%  26.9    0s

Cutting planes:
  Clique: 2
  Zero half: 47

Explored 473 nodes (11013 simplex iterations) in 0.41 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%