Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:11:24 2012

Optimize a model with 13284 rows, 6806 columns and 46330 nonzeros
Presolve removed 1559 rows and 82 columns
Presolve time: 0.27s
Presolved: 11725 rows, 6724 columns, 42476 nonzeros
Variable types: 0 continuous, 6724 integer (6724 binary)
Found heuristic solution: objective 53.0000000

Root relaxation: objective 3.000000e+00, 12199 iterations, 2.42 seconds
Total elapsed time = 5.36s

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

     0     0    3.00000    0  129   53.00000    3.00000  94.3%     -    6s
H    0     0                       4.0000000    3.00000  25.0%     -    6s
H    0     0                       3.0000000    3.00000   0.0%     -    6s

Explored 0 nodes (33530 simplex iterations) in 6.35 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%