Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:40 2012

Optimize a model with 192 rows, 59 columns and 384 nonzeros
Presolve removed 57 rows and 0 columns
Presolve time: 0.00s
Presolved: 135 rows, 59 columns, 317 nonzeros
Variable types: 0 continuous, 59 integer (59 binary)
Found heuristic solution: objective 20.0000000

Root relaxation: objective 2.427273e+01, 112 iterations, 0.00 seconds

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

     0     0   24.27273    0   56   20.00000   24.27273  21.4%     -    0s
H    0     0                      22.0000000   24.27273  10.3%     -    0s
     0     0   23.48148    0   56   22.00000   23.48148  6.73%     -    0s
     0     0   23.45192    0   57   22.00000   23.45192  6.60%     -    0s
     0     0   23.33333    0   53   22.00000   23.33333  6.06%     -    0s
     0     0   23.26606    0   57   22.00000   23.26606  5.75%     -    0s
     0     0   23.00000    0   41   22.00000   23.00000  4.55%     -    0s
     0     0     cutoff    0        22.00000   22.99998  4.55%     -    0s

Cutting planes:
  Zero half: 63

Explored 0 nodes (259 simplex iterations) in 0.02 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%