Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:44:59 2012

Optimize a model with 104 rows, 251 columns and 251 nonzeros
Model has 206 quadratic constraints
Presolve time: 1.20s
Presolved: 104 rows, 251 columns, 251 nonzeros
Variable types: 206 continuous, 45 integer (45 binary)

Root relaxation: objective 0.000000e+00, 22 iterations, 0.00 seconds

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

H    0     0                      53.0000000          -     -      -    1s
     0     0    0.00000    0   19   53.00000    0.00000   100%     -    1s
     0     0    0.00000    0   45   53.00000    0.00000   100%     -    1s
     0     0    0.00000    0   45   53.00000    0.00000   100%     -    1s
     0     2    0.00000    0   45   53.00000    0.00000   100%     -    1s
*   42    42              22      28.0000000    5.75000  79.5%  22.1    1s
*   46    39              23      27.0000000    5.75000  78.7%  20.4    1s
*   85    52              10      22.0000000    6.50000  70.5%  21.7    1s
*  331    58              13      21.0000000   16.11765  23.2%  21.7    1s

Cutting planes:

Explored 438 nodes (9689 simplex iterations) in 1.45 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%