Gurobi 5.0.1 (linux64) logging started Fri Nov 16 16:33:12 2012

Optimize a model with 12859 rows, 6006 columns and 44275 nonzeros
Presolve removed 1618 rows and 77 columns
Presolve time: 0.26s
Presolved: 11241 rows, 5929 columns, 40194 nonzeros
Variable types: 0 continuous, 5929 integer (5929 binary)
Found heuristic solution: objective 45.0000000

Root relaxation: objective 3.000000e+00, 10778 iterations, 1.99 seconds
Total elapsed time = 5.01s

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

     0     0    3.00000    0  133   45.00000    3.00000  93.3%     -    5s
H    0     0                       4.0000000    3.00000  25.0%     -    5s
H    0     0                       3.0000000    3.00000   0.0%     -    5s

Explored 0 nodes (31649 simplex iterations) in 5.81 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%