Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:31:58 2012

Optimize a model with 55 rows, 49 columns and 110 nonzeros
Presolve removed 33 rows and 30 columns
Presolve time: 0.00s
Presolved: 22 rows, 19 columns, 44 nonzeros
Variable types: 0 continuous, 19 integer (19 binary)
Found heuristic solution: objective 26.0000000

Root relaxation: objective 2.850000e+01, 22 iterations, 0.00 seconds

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

     0     0   28.50000    0   19   26.00000   28.50000  9.62%     -    0s
H    0     0                      28.0000000   28.50000  1.79%     -    0s

Explored 0 nodes (27 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.800000000000e+01, best bound 2.800000000000e+01, gap 0.0%