Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:15 2012

Optimize a model with 309 rows, 110 columns and 618 nonzeros
Presolve removed 52 rows and 2 columns
Presolve time: 0.00s
Presolved: 257 rows, 108 columns, 541 nonzeros
Variable types: 0 continuous, 108 integer (108 binary)
Found heuristic solution: objective 43.0000000

Root relaxation: objective 4.850000e+01, 153 iterations, 0.00 seconds

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

     0     0   48.50000    0   71   43.00000   48.50000  12.8%     -    0s
     0     0   47.66667    0  102   43.00000   47.66667  10.9%     -    0s
H    0     0                      45.0000000   47.66667  5.93%     -    0s
     0     0   47.39474    0  104   45.00000   47.39474  5.32%     -    0s
     0     0   47.09091    0   99   45.00000   47.09091  4.65%     -    0s
     0     0   46.88854    0  108   45.00000   46.88854  4.20%     -    0s
     0     0   46.74601    0  107   45.00000   46.74601  3.88%     -    0s
     0     0   46.67500    0  106   45.00000   46.67500  3.72%     -    0s
     0     0   46.65913    0  107   45.00000   46.65913  3.69%     -    0s
     0     0   46.65913    0  104   45.00000   46.65913  3.69%     -    0s
     0     2   46.65913    0  104   45.00000   46.65913  3.69%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 39

Explored 26 nodes (942 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.500000000000e+01, best bound 4.500000000000e+01, gap 0.0%