Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:18:29 2012

Optimize a model with 228 rows, 666 columns and 666 nonzeros
Model has 454 quadratic constraints
Presolve removed 0 rows and 24 columns
Presolve time: 2.65s
Presolved: 228 rows, 642 columns, 642 nonzeros
Variable types: 454 continuous, 188 integer (187 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                     108.0000000          -     -      -    2s
     0     0    0.00000    0   57  108.00000    0.00000   100%     -    2s
     0     0    0.00000    0  101  108.00000    0.00000   100%     -    2s
     0     0    0.00000    0  101  108.00000    0.00000   100%     -    2s
     0     2    0.00000    0  101  108.00000    0.00000   100%     -    2s
*   35    35              26      18.0000000    1.71875  90.5%  28.2    2s
H  111    81                      17.0000000    2.80000  83.5%  20.0    2s
*  148    67              22      14.0000000    2.90000  79.3%  21.1    2s
H  252    85                      13.0000000    5.00000  61.5%  19.1    3s
*  614    35              21      12.0000000   11.11573  7.37%  19.6    3s

Cutting planes:
  Gomory: 2

Explored 658 nodes (13986 simplex iterations) in 3.38 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%