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

Optimize a model with 233 rows, 90 columns and 466 nonzeros
Presolve removed 53 rows and 6 columns
Presolve time: 0.00s
Presolved: 180 rows, 84 columns, 383 nonzeros
Variable types: 0 continuous, 84 integer (84 binary)
Found heuristic solution: objective 32.0000000

Root relaxation: objective 4.200000e+01, 114 iterations, 0.00 seconds

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

     0     0   42.00000    0   70   32.00000   42.00000  31.2%     -    0s
H    0     0                      36.0000000   42.00000  16.7%     -    0s
     0     0   40.78571    0   80   36.00000   40.78571  13.3%     -    0s
     0     0   39.91667    0   78   36.00000   39.91667  10.9%     -    0s
H    0     0                      37.0000000   39.91667  7.88%     -    0s
     0     0   39.50000    0   80   37.00000   39.50000  6.76%     -    0s
     0     0   39.20312    0   78   37.00000   39.20312  5.95%     -    0s
     0     0   38.90000    0   78   37.00000   38.90000  5.14%     -    0s
     0     0   38.70588    0   78   37.00000   38.70588  4.61%     -    0s
H    0     0                      38.0000000   38.70588  1.86%     -    0s

Cutting planes:
  Zero half: 27

Explored 0 nodes (413 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.800000000000e+01, best bound 3.800000000000e+01, gap 0.0%