Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:56 2012

Optimize a model with 1 rows, 57 columns and 57 nonzeros
Model has 74 quadratic objective terms
Presolve removed 0 rows and 2 columns
Presolve time: 0.00s
Presolved: 75 rows, 129 columns, 277 nonzeros
Variable types: 0 continuous, 129 integer (128 binary)
Found heuristic solution: objective 23.0000000

Root relaxation: objective 0.000000e+00, 86 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   25   23.00000    0.00000   100%     -    0s
     0     0    0.00000    0   32   23.00000    0.00000   100%     -    0s
     0     0    0.00000    0   28   23.00000    0.00000   100%     -    0s
H    0     0                      20.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   24   20.00000    0.00000   100%     -    0s
     0     0    0.00000    0   13   20.00000    0.00000   100%     -    0s
H    0     0                      12.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   19   12.00000    0.00000   100%     -    0s
     0     0    0.00000    0   21   12.00000    0.00000   100%     -    0s
     0     0    0.00000    0   19   12.00000    0.00000   100%     -    0s
     0     2    0.00000    0   16   12.00000    0.00000   100%     -    0s
*  178   121              12      11.0000000    0.00000   100%   5.5    0s
H  189   118                      10.0000000    0.00000   100%   6.3    0s
*  242   116              10       9.0000000    1.00000  88.9%   8.2    0s

Cutting planes:
  Cover: 144
  MIR: 2

Explored 464 nodes (10327 simplex iterations) in 0.16 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%