Gurobi 5.0.1 (linux64) logging started Fri Nov 16 16:16:27 2012

Optimize a model with 11925 rows, 5700 columns and 41175 nonzeros
Presolve removed 1726 rows and 75 columns
Presolve time: 0.25s
Presolved: 10199 rows, 5625 columns, 36900 nonzeros
Variable types: 0 continuous, 5625 integer (5625 binary)
Found heuristic solution: objective 46.0000000

Root relaxation: objective 3.000000e+00, 10984 iterations, 2.11 seconds
Total elapsed time = 5.55s

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

     0     0    3.00000    0  118   46.00000    3.00000  93.5%     -    6s
H    0     0                       4.0000000    3.00000  25.0%     -    6s
H    0     0                       3.0000000    3.00000   0.0%     -    6s

Explored 0 nodes (35110 simplex iterations) in 6.33 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%