Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:59 2012

Optimize a model with 72 rows, 159 columns and 159 nonzeros
Model has 142 quadratic constraints
Presolve time: 0.83s
Presolved: 72 rows, 159 columns, 159 nonzeros
Variable types: 142 continuous, 17 integer (17 binary)

Root relaxation: objective 0.000000e+00, 8 iterations, 0.00 seconds

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

H    0     0                      35.0000000          -     -      -    0s
     0     0    0.00000    0   16   35.00000    0.00000   100%     -    0s
     0     0    0.52941    0   17   35.00000    0.52941  98.5%     -    0s
     0     2    0.55102    0   17   35.00000    0.55102  98.4%     -    0s
*   22    22              13      33.0000000    5.57143  83.1%  19.1    0s
*   24    20              13      32.0000000    5.57143  82.6%  17.9    0s
*   25    19              13      31.0000000    5.57143  82.0%  17.4    0s
*   82    53              13      30.0000000    5.71429  81.0%  17.4    0s
*  203    67              12      29.0000000    9.16667  68.4%  16.6    0s
*  256    70              11      28.0000000   13.20000  52.9%  16.2    0s
*  518    30               8      27.0000000   22.50000  16.7%  15.1    0s

Cutting planes:
  Gomory: 1

Explored 568 nodes (8433 simplex iterations) in 0.99 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0%