Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:02:37 2012

Optimize a model with 20828 rows, 25440 columns and 87130 nonzeros
Presolve removed 31 rows and 4613 columns
Presolve time: 0.43s
Presolved: 20797 rows, 20827 columns, 82257 nonzeros
Variable types: 0 continuous, 20827 integer (20827 binary)
Found heuristic solution: objective 159.0000000
Found heuristic solution: objective 3.0000000

Root relaxation: objective 2.000000e+00, 272 iterations, 0.01 seconds

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

     0     0    2.00000    0  214    3.00000    2.00000  33.3%     -    0s

Explored 0 nodes (505 simplex iterations) in 0.54 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%