Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:31:11 2012

Optimize a model with 15687 rows, 6972 columns and 53701 nonzeros
Presolve removed 2242 rows and 83 columns
Presolve time: 0.39s
Presolved: 13445 rows, 6889 columns, 48306 nonzeros
Variable types: 0 continuous, 6889 integer (6889 binary)
Found heuristic solution: objective 49.0000000

Root relaxation: objective 3.000000e+00, 14579 iterations, 3.88 seconds
Total elapsed time = 7.43s

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

     0     0    3.00000    0  139   49.00000    3.00000  93.9%     -    9s
H    0     0                       4.0000000    3.00000  25.0%     -    9s
H    0     0                       3.0000000    3.00000   0.0%     -    9s

Explored 0 nodes (40484 simplex iterations) in 9.81 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%