Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:38 2012

Optimize a model with 102 rows, 48 columns and 204 nonzeros
Presolve removed 31 rows and 11 columns
Presolve time: 0.00s
Presolved: 71 rows, 37 columns, 145 nonzeros
Variable types: 0 continuous, 37 integer (37 binary)
Found heuristic solution: objective 21.0000000

Root relaxation: objective 2.350000e+01, 41 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   35   21.00000   23.50000  11.9%     -    0s
H    0     0                      23.0000000   23.50000  2.17%     -    0s

Explored 0 nodes (48 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%