Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:10:25 2012

Optimize a model with 3650 rows, 650 columns and 11500 nonzeros
Presolve time: 0.05s
Presolved: 3650 rows, 650 columns, 19963 nonzeros
Variable types: 0 continuous, 650 integer (650 binary)
Found heuristic solution: objective 17.0000000

Root relaxation: objective 4.500000e+00, 4091 iterations, 0.26 seconds

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

     0     0    4.50000    0   49   17.00000    4.50000  73.5%     -    0s
H    0     0                       6.0000000    4.50000  25.0%     -    0s
     0     0     cutoff    0         6.00000    5.00001  16.7%     -    0s

Cutting planes:
  Gomory: 11
  Clique: 37
  Zero half: 54

Explored 0 nodes (6997 simplex iterations) in 0.66 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%