Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:23:50 2012

Optimize a model with 16019 rows, 6972 columns and 54697 nonzeros
Presolve removed 1826 rows and 0 columns
Presolve time: 0.39s
Presolved: 14193 rows, 6972 columns, 50298 nonzeros
Variable types: 0 continuous, 6972 integer (6972 binary)
Found heuristic solution: objective 48.0000000

Root relaxation: objective 3.000000e+00, 14003 iterations, 2.56 seconds
Total elapsed time = 5.59s

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

     0     0    3.00000    0  146   48.00000    3.00000  93.8%     -    8s
H    0     0                       4.0000000    3.00000  25.0%     -    8s
H    0     0                       3.0000000    3.00000   0.0%     -    8s

Explored 0 nodes (40778 simplex iterations) in 8.69 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%