Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:20:44 2012

Optimize a model with 235 rows, 681 columns and 681 nonzeros
Model has 468 quadratic constraints
Presolve removed 0 rows and 23 columns
Presolve time: 2.73s
Presolved: 235 rows, 658 columns, 658 nonzeros
Variable types: 468 continuous, 190 integer (189 binary)

Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds

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

H    0     0                     110.0000000          -     -      -    2s
     0     0    0.00000    0  106  110.00000    0.00000   100%     -    2s
     0     0    0.00000    0  168  110.00000    0.00000   100%     -    2s
     0     0    0.00000    0  131  110.00000    0.00000   100%     -    2s
     0     2    0.00000    0  131  110.00000    0.00000   100%     -    2s
H   41    41                      20.0000000    2.40741  88.0%  33.6    2s
*   54    54              29      19.0000000    2.40741  87.3%  33.6    2s
*   61    53              33      18.0000000    2.40741  86.6%  33.8    2s
H  122    72                      16.0000000    3.66667  77.1%  30.3    2s
*  367   113              11      15.0000000    7.00000  53.3%  27.7    3s

Cutting planes:
  Gomory: 1

Explored 897 nodes (25264 simplex iterations) in 3.71 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%