Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:12 2012

Optimize a model with 78 rows, 172 columns and 172 nonzeros
Model has 154 quadratic constraints
Presolve time: 0.90s
Presolved: 78 rows, 172 columns, 172 nonzeros
Variable types: 154 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                      44.0000000          -     -      -    0s
     0     0    0.00000    0    2   44.00000    0.00000   100%     -    0s
     0     0    0.00000    0   17   44.00000    0.00000   100%     -    0s
     0     0    0.00000    0   16   44.00000    0.00000   100%     -    0s
     0     2    0.00000    0   16   44.00000    0.00000   100%     -    0s
H    8     8                      39.0000000    4.30769  89.0%  31.8    0s
*   20    20              12      32.0000000    4.30769  86.5%  25.4    0s
H  108    66                      31.0000000   10.90909  64.8%  19.3    0s
H  165    73                      30.0000000   12.08333  59.7%  19.1    0s
*  166    56              11      28.0000000   12.08333  56.8%  19.0    0s
*  180    50               7      27.0000000   14.00000  48.1%  19.1    0s

Cutting planes:

Explored 334 nodes (6381 simplex iterations) in 1.03 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%