Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:11:52 2012

Optimize a model with 3674 rows, 650 columns and 11548 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.07s
Presolved: 3672 rows, 648 columns, 17942 nonzeros
Variable types: 0 continuous, 648 integer (648 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 4.628571e+00, 2608 iterations, 0.13 seconds

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

     0     0    4.62857    0  256   25.00000    4.62857  81.5%     -    0s
H    0     0                      23.0000000    4.62857  79.9%     -    0s
*    0     0               0       6.0000000    6.00000   0.0%     -    0s

Cutting planes:
  Gomory: 13
  Clique: 168

Explored 0 nodes (5973 simplex iterations) in 0.77 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%