Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:05 2012

Optimize a model with 212 rows, 88 columns and 424 nonzeros
Presolve removed 70 rows and 16 columns
Presolve time: 0.00s
Presolved: 142 rows, 72 columns, 299 nonzeros
Variable types: 0 continuous, 72 integer (72 binary)
Found heuristic solution: objective 34.0000000

Root relaxation: objective 4.075000e+01, 90 iterations, 0.00 seconds

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

     0     0   40.75000    0   63   34.00000   40.75000  19.9%     -    0s
H    0     0                      35.0000000   40.75000  16.4%     -    0s
     0     0   39.50000    0   64   35.00000   39.50000  12.9%     -    0s
H    0     0                      37.0000000   39.50000  6.76%     -    0s
H    0     0                      38.0000000   39.50000  3.95%     -    0s
     0     0   39.00000    0   58   38.00000   39.00000  2.63%     -    0s
     0     0     cutoff    0        38.00000   38.99996  2.63%     -    0s

Cutting planes:
  Clique: 1
  Zero half: 28

Explored 0 nodes (169 simplex iterations) in 0.01 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%