Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:41 2012

Optimize a model with 62 rows, 137 columns and 137 nonzeros
Model has 122 quadratic constraints
Presolve time: 0.71s
Presolved: 62 rows, 137 columns, 137 nonzeros
Variable types: 122 continuous, 15 integer (15 binary)

Root relaxation: objective 0.000000e+00, 7 iterations, 0.00 seconds

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

H    0     0                      28.0000000          -     -      -    0s
     0     0    0.00000    0   12   28.00000    0.00000   100%     -    0s
     0     0    0.36667    0   15   28.00000    0.36667  98.7%     -    0s
     0     2    0.44444    0   15   28.00000    0.44444  98.4%     -    0s
*   18    18               9      27.0000000    5.71429  78.8%  20.2    0s
*   20    18              11      26.0000000    5.71429  78.0%  18.4    0s
*   55    33               9      25.0000000    7.00000  72.0%  14.7    0s
*  163    37               7      23.0000000   12.25000  46.7%  14.4    0s

Cutting planes:
  Gomory: 1

Explored 249 nodes (3570 simplex iterations) in 0.80 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%