Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:06 2012

Optimize a model with 224 rows, 92 columns and 448 nonzeros
Presolve removed 42 rows and 10 columns
Presolve time: 0.00s
Presolved: 182 rows, 82 columns, 372 nonzeros
Variable types: 0 continuous, 82 integer (82 binary)
Found heuristic solution: objective 36.0000000

Root relaxation: objective 4.350000e+01, 106 iterations, 0.00 seconds

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

     0     0   43.50000    0   71   36.00000   43.50000  20.8%     -    0s
     0     0   41.66667    0   80   36.00000   41.66667  15.7%     -    0s
     0     0   41.60000    0   78   36.00000   41.60000  15.6%     -    0s
H    0     0                      37.0000000   41.60000  12.4%     -    0s
     0     0   40.75000    0   78   37.00000   40.75000  10.1%     -    0s
     0     0   40.50000    0   63   37.00000   40.50000  9.46%     -    0s
     0     0   40.45455    0   82   37.00000   40.45455  9.34%     -    0s
     0     0   39.75000    0   77   37.00000   39.75000  7.43%     -    0s
     0     0   39.66667    0   77   37.00000   39.66667  7.21%     -    0s
     0     0   39.63158    0   79   37.00000   39.63158  7.11%     -    0s
     0     0   39.63158    0   79   37.00000   39.63158  7.11%     -    0s
H    0     0                      38.0000000   39.63158  4.29%     -    0s
     0     2   39.63158    0   79   38.00000   39.63158  4.29%     -    0s
*    3     3               3      39.0000000   39.63158  1.62%  25.7    0s

Cutting planes:
  Gomory: 1
  Zero half: 25

Explored 4 nodes (517 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.900000000000e+01, best bound 3.900000000000e+01, gap 0.0%