Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:16 2012

Optimize a model with 1 rows, 49 columns and 49 nonzeros
Model has 57 quadratic objective terms
Presolve removed 0 rows and 2 columns
Presolve time: 0.00s
Presolved: 58 rows, 104 columns, 218 nonzeros
Variable types: 0 continuous, 104 integer (103 binary)
Found heuristic solution: objective 18.0000000

Root relaxation: objective 0.000000e+00, 77 iterations, 0.00 seconds

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

     0     0    0.00000    0   18   18.00000    0.00000   100%     -    0s
     0     0    0.00000    0   26   18.00000    0.00000   100%     -    0s
     0     0    0.00000    0   23   18.00000    0.00000   100%     -    0s
H    0     0                      13.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   13   13.00000    0.00000   100%     -    0s
H    0     0                       8.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   11    8.00000    0.00000   100%     -    0s
     0     0    0.00000    0    7    8.00000    0.00000   100%     -    0s
H    0     0                       6.0000000    0.00000   100%     -    0s
     0     0    0.00000    0    8    6.00000    0.00000   100%     -    0s
     0     0    0.00000    0   12    6.00000    0.00000   100%     -    0s
     0     0    0.00000    0   12    6.00000    0.00000   100%     -    0s
     0     2    0.00000    0   12    6.00000    0.00000   100%     -    0s

Cutting planes:
  Cover: 107
  MIR: 6

Explored 259 nodes (4207 simplex iterations) in 0.07 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%