Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:13 2012

Optimize a model with 279 rows, 108 columns and 558 nonzeros
Presolve removed 37 rows and 0 columns
Presolve time: 0.00s
Presolved: 242 rows, 108 columns, 505 nonzeros
Variable types: 0 continuous, 108 integer (108 binary)
Found heuristic solution: objective 37.0000000

Root relaxation: objective 4.800000e+01, 144 iterations, 0.00 seconds

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

     0     0   48.00000    0   84   37.00000   48.00000  29.7%     -    0s
H    0     0                      41.0000000   48.00000  17.1%     -    0s
     0     0   47.27273    0  106   41.00000   47.27273  15.3%     -    0s
     0     0   46.37500    0  107   41.00000   46.37500  13.1%     -    0s
     0     0   46.02273    0  106   41.00000   46.02273  12.3%     -    0s
H    0     0                      42.0000000   46.02273  9.58%     -    0s
H    0     0                      43.0000000   46.02273  7.03%     -    0s
     0     0   45.64667    0  108   43.00000   45.64667  6.16%     -    0s
     0     0   45.37500    0  101   43.00000   45.37500  5.52%     -    0s
     0     0   45.16000    0  108   43.00000   45.16000  5.02%     -    0s
     0     0   45.03571    0  108   43.00000   45.03571  4.73%     -    0s
     0     0   44.93023    0  100   43.00000   44.93023  4.49%     -    0s
     0     0   44.91667    0  108   43.00000   44.91667  4.46%     -    0s
     0     0   44.91667    0  104   43.00000   44.91667  4.46%     -    0s
     0     2   44.91667    0  102   43.00000   44.91667  4.46%     -    0s

Cutting planes:
  Zero half: 60

Explored 39 nodes (1362 simplex iterations) in 0.07 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%