Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:10 2012

Optimize a model with 287 rows, 102 columns and 574 nonzeros
Presolve removed 67 rows and 4 columns
Presolve time: 0.00s
Presolved: 220 rows, 98 columns, 468 nonzeros
Variable types: 0 continuous, 98 integer (98 binary)
Found heuristic solution: objective 36.0000000

Root relaxation: objective 4.425000e+01, 146 iterations, 0.00 seconds

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

     0     0   44.25000    0   71   36.00000   44.25000  22.9%     -    0s
     0     0   43.33333    0   92   36.00000   43.33333  20.4%     -    0s
H    0     0                      40.0000000   43.33333  8.33%     -    0s
     0     0   43.00000    0   93   40.00000   43.00000  7.50%     -    0s
     0     0   42.78947    0   91   40.00000   42.78947  6.97%     -    0s
     0     0   42.37500    0   95   40.00000   42.37500  5.94%     -    0s
     0     0   42.29747    0   93   40.00000   42.29747  5.74%     -    0s
     0     0   42.10169    0   94   40.00000   42.10169  5.25%     -    0s
     0     0   41.95189    0   97   40.00000   41.95189  4.88%     -    0s
     0     0   41.89308    0   95   40.00000   41.89308  4.73%     -    0s
     0     0   41.85000    0   94   40.00000   41.85000  4.62%     -    0s
     0     0   41.81250    0   82   40.00000   41.81250  4.53%     -    0s
     0     0   41.79597    0   96   40.00000   41.79597  4.49%     -    0s
     0     0   41.79597    0   96   40.00000   41.79597  4.49%     -    0s
     0     2   41.79597    0   95   40.00000   41.79597  4.49%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 52

Explored 42 nodes (1205 simplex iterations) in 0.07 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%