Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:58:17 2012

Optimize a model with 6758 rows, 11990 columns and 31828 nonzeros
Presolve removed 247 rows and 3161 columns
Presolve time: 0.14s
Presolved: 6511 rows, 8829 columns, 28122 nonzeros
Variable types: 0 continuous, 8829 integer (8829 binary)
Found heuristic solution: objective 31.0000000
Found heuristic solution: objective 3.0000000

Root relaxation: cutoff, 9159 iterations, 0.28 seconds

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

     0     0     cutoff    0         3.00000    2.00000  33.3%     -    0s

Explored 0 nodes (9159 simplex iterations) in 0.43 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%