Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:23 2012

Optimize a model with 492 rows, 102 columns and 984 nonzeros
Presolve removed 156 rows and 0 columns
Presolve time: 0.00s
Presolved: 336 rows, 102 columns, 804 nonzeros
Variable types: 0 continuous, 102 integer (102 binary)
Found heuristic solution: objective 29.0000000

Root relaxation: objective 3.761429e+01, 203 iterations, 0.00 seconds

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

     0     0   37.61429    0   94   29.00000   37.61429  29.7%     -    0s
H    0     0                      31.0000000   37.61429  21.3%     -    0s
     0     0   37.04110    0   99   31.00000   37.04110  19.5%     -    0s
     0     0   36.75694    0   98   31.00000   36.75694  18.6%     -    0s
     0     0   36.19663    0   99   31.00000   36.19663  16.8%     -    0s
     0     0   36.04454    0  101   31.00000   36.04454  16.3%     -    0s
     0     0   36.00549    0  100   31.00000   36.00549  16.1%     -    0s
     0     0   35.96837    0  100   31.00000   35.96837  16.0%     -    0s
     0     0   35.96452    0  100   31.00000   35.96452  16.0%     -    0s
     0     0   35.96452    0   98   31.00000   35.96452  16.0%     -    0s
     0     2   35.95971    0   98   31.00000   35.95971  16.0%     -    0s
*   14     8              10      32.0000000   35.95971  12.4%  28.4    0s
*   31     8               5      33.0000000   35.60000  7.88%  30.7    0s

Cutting planes:
  Clique: 1
  Zero half: 36

Explored 58 nodes (2172 simplex iterations) in 0.12 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%