Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:06 2012

Optimize a model with 55 rows, 142 columns and 142 nonzeros
Model has 108 quadratic constraints
Presolve removed 0 rows and 1 columns
Presolve time: 0.63s
Presolved: 55 rows, 141 columns, 141 nonzeros
Variable types: 108 continuous, 33 integer (32 binary)

Root relaxation: objective 0.000000e+00, 16 iterations, 0.00 seconds

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

H    0     0                      24.0000000          -     -      -    0s
     0     0    0.00000    0   10   24.00000    0.00000   100%     -    0s
     0     0    0.00000    0   16   24.00000    0.00000   100%     -    0s
     0     0    0.00000    0   16   24.00000    0.00000   100%     -    0s
H    0     0                      20.0000000    0.00000   100%     -    0s
     0     2    0.45833    0   29   20.00000    0.45833  97.7%     -    0s
*   22    22              13      14.0000000    1.78963  87.2%  21.2    0s
*   43    28              10      11.0000000    1.82750  83.4%  17.4    0s
*   69    31              11      10.0000000    1.92593  80.7%  15.0    0s
*  160    33              10       9.0000000    3.00000  66.7%  13.6    0s

Cutting planes:
  Gomory: 1

Explored 285 nodes (4148 simplex iterations) in 0.72 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%