Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:31:59 2012

Optimize a model with 84 rows, 55 columns and 168 nonzeros
Presolve removed 47 rows and 30 columns
Presolve time: 0.00s
Presolved: 37 rows, 25 columns, 74 nonzeros
Variable types: 0 continuous, 25 integer (25 binary)
Found heuristic solution: objective 27.0000000

Root relaxation: objective 2.850000e+01, 31 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   25   27.00000   28.50000  5.56%     -    0s
H    0     0                      28.0000000   28.50000  1.79%     -    0s

Explored 0 nodes (35 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%