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

Optimize a model with 137 rows, 55 columns and 274 nonzeros
Presolve removed 42 rows and 5 columns
Presolve time: 0.00s
Presolved: 95 rows, 50 columns, 206 nonzeros
Variable types: 0 continuous, 50 integer (50 binary)
Found heuristic solution: objective 22.0000000

Root relaxation: objective 2.350000e+01, 59 iterations, 0.00 seconds

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

     0     0   23.50000    0   29   22.00000   23.50000  6.82%     -    0s
H    0     0                      23.0000000   23.50000  2.17%     -    0s

Explored 0 nodes (110 simplex iterations) in 0.00 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%