Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:08 2012

Optimize a model with 220 rows, 96 columns and 440 nonzeros
Presolve removed 62 rows and 19 columns
Presolve time: 0.00s
Presolved: 158 rows, 77 columns, 325 nonzeros
Variable types: 0 continuous, 77 integer (77 binary)
Found heuristic solution: objective 43.0000000

Root relaxation: objective 4.566667e+01, 103 iterations, 0.00 seconds

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

     0     0   45.66667    0   73   43.00000   45.66667  6.20%     -    0s
H    0     0                      44.0000000   45.66667  3.79%     -    0s
     0     0   45.00000    0   70   44.00000   45.00000  2.27%     -    0s
     0     0     cutoff    0        44.00000   44.99995  2.27%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 51

Explored 0 nodes (161 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.400000000000e+01, best bound 4.400000000000e+01, gap 0.0%