Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:04 2012

Optimize a model with 166 rows, 84 columns and 332 nonzeros
Presolve removed 45 rows and 16 columns
Presolve time: 0.00s
Presolved: 121 rows, 68 columns, 251 nonzeros
Variable types: 0 continuous, 68 integer (68 binary)
Found heuristic solution: objective 38.0000000

Root relaxation: objective 4.166667e+01, 84 iterations, 0.00 seconds

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

     0     0   41.66667    0   67   38.00000   41.66667  9.65%     -    0s
     0     0   40.00000    0   64   38.00000   40.00000  5.26%     -    0s
     0     0   39.87500    0   62   38.00000   39.87500  4.93%     -    0s
H    0     0                      39.0000000   39.87500  2.24%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 5

Explored 0 nodes (190 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.900000000000e+01, best bound 3.900000000000e+01, gap 0.0%