Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:07 2012

Optimize a model with 237 rows, 95 columns and 474 nonzeros
Presolve removed 75 rows and 20 columns
Presolve time: 0.00s
Presolved: 162 rows, 75 columns, 332 nonzeros
Variable types: 0 continuous, 75 integer (75 binary)
Found heuristic solution: objective 38.0000000

Root relaxation: objective 4.450000e+01, 102 iterations, 0.00 seconds

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

     0     0   44.50000    0   69   38.00000   44.50000  17.1%     -    0s
     0     0   43.50000    0   65   38.00000   43.50000  14.5%     -    0s
     0     0   43.00000    0   66   38.00000   43.00000  13.2%     -    0s
     0     0   42.95238    0   75   38.00000   42.95238  13.0%     -    0s
     0     0   42.33333    0   68   38.00000   42.33333  11.4%     -    0s
H    0     0                      39.0000000   42.33333  8.55%     -    0s
     0     0   42.00000    0   70   39.00000   42.00000  7.69%     -    0s
H    0     0                      40.0000000   42.00000  5.00%     -    0s
     0     0   41.83333    0   73   40.00000   41.83333  4.58%     -    0s
     0     0   41.45161    0   74   40.00000   41.45161  3.63%     -    0s
H    0     0                      41.0000000   41.45161  1.10%     -    0s

Cutting planes:
  Zero half: 26

Explored 0 nodes (317 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.100000000000e+01, best bound 4.100000000000e+01, gap 0.0%