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

Optimize a model with 219 rows, 87 columns and 438 nonzeros
Presolve removed 93 rows and 22 columns
Presolve time: 0.00s
Presolved: 126 rows, 65 columns, 266 nonzeros
Variable types: 0 continuous, 65 integer (65 binary)
Found heuristic solution: objective 36.0000000

Root relaxation: objective 4.000000e+01, 80 iterations, 0.00 seconds

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

     0     0   40.00000    0   58   36.00000   40.00000  11.1%     -    0s
     0     0   39.00000    0   59   36.00000   39.00000  8.33%     -    0s
     0     0   38.50000    0   62   36.00000   38.50000  6.94%     -    0s
*    0     0               0      38.0000000   38.00000   0.0%     -    0s

Cutting planes:
  Zero half: 40

Explored 0 nodes (204 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%