Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:09 2012

Optimize a model with 238 rows, 100 columns and 476 nonzeros
Presolve removed 76 rows and 18 columns
Presolve time: 0.00s
Presolved: 162 rows, 82 columns, 333 nonzeros
Variable types: 0 continuous, 82 integer (82 binary)
Found heuristic solution: objective 42.0000000

Root relaxation: objective 4.700000e+01, 95 iterations, 0.00 seconds

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

     0     0   47.00000    0   72   42.00000   47.00000  11.9%     -    0s
     0     0   45.50000    0   69   42.00000   45.50000  8.33%     -    0s
     0     0   45.50000    0   79   42.00000   45.50000  8.33%     -    0s
     0     0   44.93333    0   76   42.00000   44.93333  6.98%     -    0s
H    0     0                      43.0000000   44.93333  4.50%     -    0s
     0     0   44.75000    0   74   43.00000   44.75000  4.07%     -    0s
     0     0   44.50000    0   51   43.00000   44.50000  3.49%     -    0s
     0     0   44.40000    0   74   43.00000   44.40000  3.26%     -    0s
     0     0   44.00000    0   77   43.00000   44.00000  2.33%     -    0s
     0     0     cutoff    0        43.00000   43.99996  2.33%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 38

Explored 0 nodes (323 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.300000000000e+01, best bound 4.300000000000e+01, gap 0.0%