Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:08 2012

Optimize a model with 80 rows, 176 columns and 176 nonzeros
Model has 158 quadratic constraints
Presolve time: 0.92s
Presolved: 80 rows, 176 columns, 176 nonzeros
Variable types: 158 continuous, 18 integer (18 binary)

Root relaxation: objective 0.000000e+00, 9 iterations, 0.00 seconds

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

H    0     0                      41.0000000          -     -      -    0s
     0     0    0.00000    0   16   41.00000    0.00000   100%     -    0s
     0     0    0.50000    0   18   41.00000    0.50000  98.8%     -    0s
     0     0    0.50000    0   18   41.00000    0.50000  98.8%     -    0s
     0     2    0.50000    0   18   41.00000    0.50000  98.8%     -    0s
*   23    23              12      40.0000000    5.42857  86.4%  27.0    0s
*   26    22              13      39.0000000    5.42857  86.1%  24.1    0s
*   43    31              11      34.0000000    5.51429  83.8%  24.3    0s
*   44    30              11      33.0000000    5.51429  83.3%  23.9    0s
*   46    26              10      31.0000000    5.51429  82.2%  23.0    0s

Cutting planes:
  Gomory: 1

Explored 590 nodes (9498 simplex iterations) in 1.11 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%