Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:03:02 2012

Optimize a model with 20987 rows, 25440 columns and 87607 nonzeros
Presolve removed 351 rows and 4931 columns
Presolve time: 0.48s
Presolved: 20636 rows, 20509 columns, 81623 nonzeros
Variable types: 0 continuous, 20509 integer (20509 binary)
Found heuristic solution: objective 159.0000000

Root relaxation: objective 3.000000e+00, 15640 iterations, 1.80 seconds
Total elapsed time = 8.42s

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

*    0     0               0       3.0000000    3.00000   0.0%     -    9s

Explored 0 nodes (43174 simplex iterations) in 9.31 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%