Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:01 2012

Optimize a model with 147 rows, 69 columns and 294 nonzeros
Presolve removed 104 rows and 36 columns
Presolve time: 0.00s
Presolved: 43 rows, 33 columns, 91 nonzeros
Variable types: 0 continuous, 33 integer (33 binary)
Found heuristic solution: objective 27.0000000

Root relaxation: objective 3.133333e+01, 33 iterations, 0.00 seconds

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

     0     0   31.33333    0   27   27.00000   31.33333  16.0%     -    0s
H    0     0                      31.0000000   31.33333  1.08%     -    0s

Explored 0 nodes (40 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%