Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:11:33 2012

Optimize a model with 220 rows, 646 columns and 646 nonzeros
Model has 438 quadratic constraints
Presolve removed 0 rows and 26 columns
Presolve time: 2.55s
Presolved: 220 rows, 620 columns, 620 nonzeros
Variable types: 438 continuous, 182 integer (181 binary)

Root relaxation: objective 0.000000e+00, 77 iterations, 0.00 seconds

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

H    0     0                     114.0000000          -     -      -    2s
     0     0    0.00000    0   38  114.00000    0.00000   100%     -    2s
     0     0    0.00000    0   48  114.00000    0.00000   100%     -    2s
     0     0    0.00000    0  130  114.00000    0.00000   100%     -    2s
     0     2    0.00000    0  128  114.00000    0.00000   100%     -    2s
H   54    54                      23.0000000    2.57778  88.8%  34.2    2s
*   55    55              37      21.0000000    2.57778  87.7%  35.8    2s
H   85    77                      20.0000000    3.38889  83.1%  29.8    2s
*   88    78              22      19.0000000    3.38889  82.2%  33.0    2s
H  116    78                      16.0000000    3.55659  77.8%  29.4    2s
*  116    70              23      15.0000000    3.55659  76.3%  29.5    2s
*  118    56              22      14.0000000    3.55659  74.6%  29.6    2s
*  543   145              23      13.0000000    7.57771  41.7%  20.1    3s
*  675    88               9      12.0000000    8.52632  28.9%  21.6    3s

Cutting planes:

Explored 1011 nodes (21291 simplex iterations) in 3.52 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%