Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:12:04 2012

Optimize a model with 228 rows, 662 columns and 662 nonzeros
Model has 454 quadratic constraints
Presolve removed 0 rows and 24 columns
Presolve time: 2.65s
Presolved: 228 rows, 638 columns, 638 nonzeros
Variable types: 454 continuous, 184 integer (183 binary)

Root relaxation: objective 0.000000e+00, 81 iterations, 0.00 seconds

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

H    0     0                     111.0000000          -     -      -    2s
     0     0    0.00000    0   28  111.00000    0.00000   100%     -    2s
     0     0    0.00000    0    3  111.00000    0.00000   100%     -    2s
     0     0    0.00000    0  128  111.00000    0.00000   100%     -    2s
     0     2    0.00000    0  123  111.00000    0.00000   100%     -    2s
H   40    37                      21.0000000    1.95278  90.7%  45.8    2s
*  110    55              23      18.0000000    2.99509  83.4%  26.4    2s
H  193   106                      16.0000000    3.40789  78.7%  22.9    3s
*  295   135              10      15.0000000    4.73660  68.4%  21.0    3s
*  575   125              10      13.0000000    7.38462  43.2%  20.5    3s

Cutting planes:

Explored 1096 nodes (24011 simplex iterations) in 3.74 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%