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

Optimize a model with 221 rows, 88 columns and 442 nonzeros
Presolve removed 66 rows and 10 columns
Presolve time: 0.00s
Presolved: 155 rows, 78 columns, 330 nonzeros
Variable types: 0 continuous, 78 integer (78 binary)
Found heuristic solution: objective 32.0000000

Root relaxation: objective 3.850000e+01, 97 iterations, 0.00 seconds

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

     0     0   38.50000    0   51   32.00000   38.50000  20.3%     -    0s
H    0     0                      34.0000000   38.50000  13.2%     -    0s
*    0     0               0      38.0000000   38.00000   0.0%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 19

Explored 0 nodes (163 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%