Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:14 2012

Optimize a model with 69 rows, 171 columns and 171 nonzeros
Model has 136 quadratic constraints
Presolve time: 0.80s
Presolved: 69 rows, 171 columns, 171 nonzeros
Variable types: 136 continuous, 35 integer (35 binary)

Root relaxation: objective 0.000000e+00, 17 iterations, 0.00 seconds

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

H    0     0                      37.0000000          -     -      -    0s
     0     0    0.00000    0    8   37.00000    0.00000   100%     -    0s
     0     0    0.00000    0   17   37.00000    0.00000   100%     -    0s
     0     0    0.00000    0   30   37.00000    0.00000   100%     -    0s
     0     2    0.00000    0   30   37.00000    0.00000   100%     -    0s
*   31    31              18      19.0000000    2.83333  85.1%  21.4    0s
*   33    29              18      18.0000000    2.83333  84.3%  20.7    0s
*   44    28               8      14.0000000    3.00000  78.6%  20.0    0s
*   59    28              11      13.0000000    3.00000  76.9%  20.0    0s

Cutting planes:

Explored 230 nodes (4793 simplex iterations) in 0.89 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%