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

Optimize a model with 148 rows, 57 columns and 296 nonzeros
Presolve removed 35 rows and 3 columns
Presolve time: 0.00s
Presolved: 113 rows, 54 columns, 243 nonzeros
Variable types: 0 continuous, 54 integer (54 binary)
Found heuristic solution: objective 21.0000000

Root relaxation: objective 2.500000e+01, 67 iterations, 0.00 seconds

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

     0     0   25.00000    0   38   21.00000   25.00000  19.0%     -    0s
     0     0   24.66667    0   44   21.00000   24.66667  17.5%     -    0s
H    0     0                      23.0000000   24.66667  7.25%     -    0s
     0     0   24.00000    0   48   23.00000   24.00000  4.35%     -    0s
     0     0   24.00000    0   44   23.00000   24.00000  4.35%     -    0s
     0     0   24.00000    0   44   23.00000   24.00000  4.35%     -    0s
     0     0   24.00000    0   25   23.00000   24.00000  4.35%     -    0s
     0     2   24.00000    0   25   23.00000   24.00000  4.35%     -    0s

Explored 3 nodes (231 simplex iterations) in 0.02 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%