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

Optimize a model with 120 rows, 67 columns and 240 nonzeros
Presolve removed 29 rows and 13 columns
Presolve time: 0.00s
Presolved: 91 rows, 54 columns, 184 nonzeros
Variable types: 0 continuous, 54 integer (54 binary)
Found heuristic solution: objective 32.0000000

Root relaxation: objective 3.350000e+01, 72 iterations, 0.00 seconds

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

     0     0   33.50000    0   51   32.00000   33.50000  4.69%     -    0s
     0     0 infeasible    0        32.00000   32.99997  3.12%     -    0s

Explored 0 nodes (104 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%