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

Optimize a model with 181 rows, 58 columns and 362 nonzeros
Presolve removed 57 rows and 3 columns
Presolve time: 0.00s
Presolved: 124 rows, 55 columns, 271 nonzeros
Variable types: 0 continuous, 55 integer (55 binary)
Found heuristic solution: objective 22.0000000

Root relaxation: objective 2.525000e+01, 74 iterations, 0.00 seconds

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

     0     0   25.25000    0   44   22.00000   25.25000  14.8%     -    0s
H    0     0                      23.0000000   25.25000  9.78%     -    0s
     0     0   24.42857    0   47   23.00000   24.42857  6.21%     -    0s
     0     0   24.00000    0   43   23.00000   24.00000  4.35%     -    0s
     0     0     cutoff    0        23.00000   23.99998  4.35%     -    0s

Cutting planes:
  Zero half: 48

Explored 0 nodes (126 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%