Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:26:21 2012

Optimize a model with 8831 rows, 4830 columns and 30979 nonzeros
Presolve removed 1522 rows and 140 columns
Presolve time: 0.32s
Presolved: 7309 rows, 4690 columns, 26903 nonzeros
Variable types: 0 continuous, 4690 integer (4690 binary)
Found heuristic solution: objective 69.0000000

Root relaxation: objective 3.000000e+00, 6651 iterations, 0.89 seconds
Total elapsed time = 5.29s

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

     0     0    3.00000    0   69   69.00000    3.00000  95.7%     -    6s
H    0     0                      32.0000000    3.00000  90.6%     -    6s
H    0     0                       4.0000000    3.00000  25.0%     -    6s
H    0     0                       3.0000000    3.00000   0.0%     -    6s

Explored 0 nodes (34962 simplex iterations) in 6.06 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%