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

Optimize a model with 211 rows, 93 columns and 422 nonzeros
Presolve removed 48 rows and 12 columns
Presolve time: 0.00s
Presolved: 163 rows, 81 columns, 336 nonzeros
Variable types: 0 continuous, 81 integer (81 binary)
Found heuristic solution: objective 39.0000000

Root relaxation: objective 4.350000e+01, 107 iterations, 0.00 seconds

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

     0     0   43.50000    0   51   39.00000   43.50000  11.5%     -    0s
     0     0   42.50000    0   61   39.00000   42.50000  8.97%     -    0s
     0     0   42.00000    0   69   39.00000   42.00000  7.69%     -    0s
     0     0   41.91667    0   66   39.00000   41.91667  7.48%     -    0s
     0     0   41.84615    0   71   39.00000   41.84615  7.30%     -    0s
H    0     0                      40.0000000   41.84615  4.62%     -    0s
     0     0   41.73333    0   71   40.00000   41.73333  4.33%     -    0s
H    0     0                      41.0000000   41.73333  1.79%     -    0s

Cutting planes:
  Zero half: 17

Explored 0 nodes (252 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%