Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:26 2012

Optimize a model with 39 rows, 89 columns and 89 nonzeros
Model has 76 quadratic constraints
Presolve time: 0.44s
Presolved: 39 rows, 89 columns, 89 nonzeros
Variable types: 76 continuous, 13 integer (13 binary)

Root relaxation: objective 0.000000e+00, 6 iterations, 0.00 seconds

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

H    0     0                      21.0000000          -     -      -    0s
     0     0    0.00000    0   12   21.00000    0.00000   100%     -    0s
     0     0    0.44872    0   13   21.00000    0.44872  97.9%     -    0s
     0     2    0.83333    0   13   21.00000    0.83333  96.0%     -    0s
*   17    17              11      20.0000000    3.30556  83.5%   8.2    0s
*   20    16              10      19.0000000    3.30556  82.6%   7.8    0s
*   22    14              11      18.0000000    3.30556  81.6%   7.2    0s
*   32    18               8      16.0000000    3.58333  77.6%   7.8    0s
*   52    20               7      15.0000000    5.10000  66.0%   7.8    0s

Cutting planes:
  Gomory: 2

Explored 164 nodes (1298 simplex iterations) in 0.49 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%