Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:32 2012

Optimize a model with 544 rows, 104 columns and 1088 nonzeros
Presolve removed 199 rows and 0 columns
Presolve time: 0.00s
Presolved: 345 rows, 104 columns, 861 nonzeros
Variable types: 0 continuous, 104 integer (104 binary)
Found heuristic solution: objective 27.0000000

Root relaxation: objective 3.718812e+01, 226 iterations, 0.00 seconds

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

     0     0   37.18812    0  101   27.00000   37.18812  37.7%     -    0s
H    0     0                      29.0000000   37.18812  28.2%     -    0s
     0     0   36.70750    0  100   29.00000   36.70750  26.6%     -    0s
     0     0   36.38000    0  102   29.00000   36.38000  25.4%     -    0s
     0     0   36.18361    0  103   29.00000   36.18361  24.8%     -    0s
     0     0   36.00630    0  101   29.00000   36.00630  24.2%     -    0s
     0     0   35.93708    0  103   29.00000   35.93708  23.9%     -    0s
     0     0   35.81365    0  104   29.00000   35.81365  23.5%     -    0s
     0     0   35.77343    0  103   29.00000   35.77343  23.4%     -    0s
     0     0   35.77284    0  103   29.00000   35.77284  23.4%     -    0s
     0     0   35.77284    0  102   29.00000   35.77284  23.4%     -    0s
H    0     0                      30.0000000   35.77284  19.2%     -    0s
     0     2   35.77223    0  102   30.00000   35.77223  19.2%     -    0s
*   10    10               8      31.0000000   35.77223  15.4%  45.6    0s

Cutting planes:
  Clique: 5
  Zero half: 38

Explored 271 nodes (7427 simplex iterations) in 0.30 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%