Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:45 2012

Optimize a model with 56 rows, 126 columns and 126 nonzeros
Model has 110 quadratic constraints
Presolve time: 0.64s
Presolved: 56 rows, 126 columns, 126 nonzeros
Variable types: 110 continuous, 16 integer (16 binary)

Root relaxation: objective 0.000000e+00, 8 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    0.33333    0   16   28.00000    0.33333  98.8%     -    0s
     0     0    0.33333    0   16   28.00000    0.33333  98.8%     -    0s
     0     2    0.33333    0   16   28.00000    0.33333  98.8%     -    0s
*   23    22              13      22.0000000    4.50000  79.5%  13.5    0s
H   53    34                      21.0000000    6.75000  67.9%  13.0    0s
*   58    32              10      20.0000000    6.75000  66.2%  12.6    0s
*  105    34               6      19.0000000   10.20000  46.3%  14.4    0s
*  107    27               7      18.0000000   10.20000  43.3%  14.3    0s

Cutting planes:
  Gomory: 1

Explored 167 nodes (2476 simplex iterations) in 0.70 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%