Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:39 2012

Optimize a model with 132 rows, 54 columns and 264 nonzeros
Presolve removed 40 rows and 8 columns
Presolve time: 0.00s
Presolved: 92 rows, 46 columns, 199 nonzeros
Variable types: 0 continuous, 46 integer (46 binary)
Found heuristic solution: objective 21.0000000

Root relaxation: objective 2.475000e+01, 62 iterations, 0.00 seconds

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

     0     0   24.75000    0   43   21.00000   24.75000  17.9%     -    0s
     0     0   23.42857    0   43   21.00000   23.42857  11.6%     -    0s
H    0     0                      22.0000000   23.42857  6.49%     -    0s
     0     0   23.00000    0   43   22.00000   23.00000  4.55%     -    0s
*    0     0               0      23.0000000   23.00000   0.0%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 24

Explored 0 nodes (139 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%