Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:09:57 2012

Optimize a model with 218 rows, 640 columns and 640 nonzeros
Model has 434 quadratic constraints
Presolve removed 0 rows and 22 columns
Presolve time: 2.53s
Presolved: 218 rows, 618 columns, 618 nonzeros
Variable types: 434 continuous, 184 integer (183 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                     122.0000000          -     -      -    2s
     0     0    0.00000    0   11  122.00000    0.00000   100%     -    2s
     0     0    0.00000    0    2  122.00000    0.00000   100%     -    2s
     0     0    0.00000    0   56  122.00000    0.00000   100%     -    2s
     0     2    0.00000    0   51  122.00000    0.00000   100%     -    2s
*   24    21              18      12.0000000    1.66502  86.1%  42.8    2s
H   47    31                      11.0000000    1.77561  83.9%  31.9    2s
*   52    34              23      10.0000000    1.77561  82.2%  33.2    2s
H   85    30                       9.0000000    2.71429  69.8%  27.7    2s

Cutting planes:

Explored 237 nodes (6560 simplex iterations) in 2.84 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.999999998661e+00, best bound 8.999999998661e+00, gap 0.0%