Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:43:14 2012

Optimize a model with 4042 rows, 8930 columns and 20680 nonzeros
Presolve removed 36 rows and 3384 columns
Presolve time: 0.13s
Presolved: 4006 rows, 5546 columns, 17296 nonzeros
Variable types: 0 continuous, 5546 integer (5546 binary)
Found heuristic solution: objective 20.0000000
Found heuristic solution: objective 2.0000000

Root relaxation: cutoff, 3175 iterations, 0.03 seconds

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

     0     0     cutoff    0         2.00000    1.00000  50.0%     -    0s

Explored 0 nodes (3175 simplex iterations) in 0.17 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%