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

Optimize a model with 123 rows, 52 columns and 246 nonzeros
Presolve removed 41 rows and 8 columns
Presolve time: 0.00s
Presolved: 82 rows, 44 columns, 172 nonzeros
Variable types: 0 continuous, 44 integer (44 binary)
Found heuristic solution: objective 18.0000000

Root relaxation: objective 2.300000e+01, 52 iterations, 0.00 seconds

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

     0     0   23.00000    0   38   18.00000   23.00000  27.8%     -    0s
H    0     0                      20.0000000   23.00000  15.0%     -    0s
*    0     0               0      22.0000000   22.00000   0.0%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 14

Explored 0 nodes (87 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%