Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:06:42 2012

Optimize a model with 199 rows, 599 columns and 599 nonzeros
Model has 396 quadratic constraints
Presolve removed 0 rows and 30 columns
Presolve time: 2.31s
Presolved: 199 rows, 569 columns, 569 nonzeros
Variable types: 396 continuous, 173 integer (172 binary)

Root relaxation: objective 0.000000e+00, 71 iterations, 0.00 seconds

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

H    0     0                      90.0000000          -     -      -    2s
     0     0    0.00000    0  101   90.00000    0.00000   100%     -    2s
     0     0    0.00000    0  136   90.00000    0.00000   100%     -    2s
     0     0    0.00000    0  130   90.00000    0.00000   100%     -    2s
     0     2    0.00000    0  129   90.00000    0.00000   100%     -    2s
H   74    74                      13.0000000    2.15385  83.4%  19.6    2s
*   79    75              50      12.0000000    2.15385  82.1%  19.0    2s
H  212   118                      11.0000000    3.42281  68.9%  18.5    2s
H  243   108                      10.0000000    3.47500  65.2%  19.0    2s
H  271   106                      10.0000000    3.51261  64.9%  19.7    2s
*  356    67              16       9.0000000    4.46094  50.4%  19.0    2s
H  585    69                       9.0000000    7.00000  22.2%  18.5    2s
*  601    21               6       8.0000000    7.31373  8.58%  18.6    2s

Cutting planes:
  Gomory: 5

Explored 627 nodes (13271 simplex iterations) in 2.85 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%