Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:25:16 2012

Optimize a model with 9859 rows, 4692 columns and 33930 nonzeros
Presolve removed 1430 rows and 2 columns
Presolve time: 0.37s
Presolved: 8497 rows, 4690 columns, 34906 nonzeros
Variable types: 0 continuous, 4690 integer (4690 binary)
Found heuristic solution: objective 68.0000000

Root relaxation: objective 4.000000e+00, 6073 iterations, 0.70 seconds

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

     0     0    4.00000    0   39   68.00000    4.00000  94.1%     -    2s
H    0     0                       4.0000000    4.00000   0.0%     -    2s

Explored 0 nodes (16131 simplex iterations) in 2.10 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%