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

Optimize a model with 271 rows, 101 columns and 542 nonzeros
Presolve removed 40 rows and 3 columns
Presolve time: 0.00s
Presolved: 231 rows, 98 columns, 483 nonzeros
Variable types: 0 continuous, 98 integer (98 binary)
Found heuristic solution: objective 39.0000000

Root relaxation: objective 4.650000e+01, 115 iterations, 0.00 seconds

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

     0     0   46.50000    0   83   39.00000   46.50000  19.2%     -    0s
     0     0   45.50000    0   79   39.00000   45.50000  16.7%     -    0s
H    0     0                      40.0000000   45.50000  13.8%     -    0s
     0     0   45.09091    0   91   40.00000   45.09091  12.7%     -    0s
H    0     0                      42.0000000   45.09091  7.36%     -    0s
     0     0   44.45000    0   98   42.00000   44.45000  5.83%     -    0s
H    0     0                      43.0000000   44.45000  3.37%     -    0s
     0     0   44.12500    0   88   43.00000   44.12500  2.62%     -    0s
     0     0     cutoff    0        43.00000   43.99996  2.33%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 32

Explored 0 nodes (400 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%