Gurobi 5.0.1 (linux64) logging started Fri Nov 16 16:48:41 2012

Optimize a model with 13825 rows, 6320 columns and 47479 nonzeros
Presolve removed 1818 rows and 79 columns
Presolve time: 0.32s
Presolved: 12007 rows, 6241 columns, 43055 nonzeros
Variable types: 0 continuous, 6241 integer (6241 binary)
Found heuristic solution: objective 42.0000000

Root relaxation: objective 3.000000e+00, 12957 iterations, 2.81 seconds
Total elapsed time = 5.93s

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

     0     0    3.00000    0  143   42.00000    3.00000  92.9%     -    8s
H    0     0                       4.0000000    3.00000  25.0%     -    8s
H    0     0                       3.0000000    3.00000   0.0%     -    8s

Explored 0 nodes (41831 simplex iterations) in 8.82 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%