Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:03 2012

Optimize a model with 179 rows, 80 columns and 358 nonzeros
Presolve removed 68 rows and 22 columns
Presolve time: 0.00s
Presolved: 111 rows, 58 columns, 227 nonzeros
Variable types: 0 continuous, 58 integer (58 binary)
Found heuristic solution: objective 34.0000000

Root relaxation: objective 3.800000e+01, 72 iterations, 0.00 seconds

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

     0     0   38.00000    0   54   34.00000   38.00000  11.8%     -    0s
     0     0   37.60000    0   55   34.00000   37.60000  10.6%     -    0s
H    0     0                      36.0000000   37.60000  4.44%     -    0s
H    0     0                      37.0000000   37.60000  1.62%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 5

Explored 0 nodes (145 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.700000000000e+01, best bound 3.700000000000e+01, gap 0.0%