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

Optimize a model with 213 rows, 88 columns and 426 nonzeros
Presolve removed 89 rows and 25 columns
Presolve time: 0.00s
Presolved: 124 rows, 63 columns, 260 nonzeros
Variable types: 0 continuous, 63 integer (63 binary)
Found heuristic solution: objective 37.0000000

Root relaxation: objective 4.160000e+01, 87 iterations, 0.00 seconds

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

     0     0   41.60000    0   63   37.00000   41.60000  12.4%     -    0s
H    0     0                      39.0000000   41.60000  6.67%     -    0s
H    0     0                      40.0000000   41.60000  4.00%     -    0s
     0     0   41.00000    0   52   40.00000   41.00000  2.50%     -    0s
     0     0   41.00000    0   42   40.00000   41.00000  2.50%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 19

Explored 0 nodes (161 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+01, best bound 4.000000000000e+01, gap 0.0%