Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:14 2012

Optimize a model with 287 rows, 109 columns and 574 nonzeros
Presolve removed 41 rows and 7 columns
Presolve time: 0.00s
Presolved: 246 rows, 102 columns, 507 nonzeros
Variable types: 0 continuous, 102 integer (102 binary)
Found heuristic solution: objective 43.0000000

Root relaxation: objective 5.050000e+01, 136 iterations, 0.00 seconds

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

     0     0   50.50000    0   83   43.00000   50.50000  17.4%     -    0s
     0     0   48.70000    0   96   43.00000   48.70000  13.3%     -    0s
H    0     0                      45.0000000   48.70000  8.22%     -    0s
     0     0   48.22222    0   98   45.00000   48.22222  7.16%     -    0s
     0     0   47.76884    0  101   45.00000   47.76884  6.15%     -    0s
     0     0   47.40000    0   97   45.00000   47.40000  5.33%     -    0s
     0     0   47.22222    0   97   45.00000   47.22222  4.94%     -    0s
     0     0   47.14286    0   97   45.00000   47.14286  4.76%     -    0s
     0     0   47.13514    0   93   45.00000   47.13514  4.74%     -    0s
     0     0   47.09896    0   98   45.00000   47.09896  4.66%     -    0s
     0     0   47.09896    0   96   45.00000   47.09896  4.66%     -    0s
     0     2   47.09091    0   96   45.00000   47.09091  4.65%     -    0s
*   10     1               5      46.0000000   46.33333  0.72%  26.8    0s

Cutting planes:
  Gomory: 3
  Zero half: 35

Explored 11 nodes (837 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.600000000000e+01, best bound 4.600000000000e+01, gap 0.0%