Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:36:15 2012

Optimize a model with 171 rows, 418 columns and 418 nonzeros
Model has 340 quadratic constraints
Presolve time: 1.98s
Presolved: 171 rows, 418 columns, 418 nonzeros
Variable types: 340 continuous, 78 integer (78 binary)

Root relaxation: objective 0.000000e+00, 39 iterations, 0.00 seconds

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

H    0     0                      77.0000000          -     -      -    1s
     0     0    0.00000    0    2   77.00000    0.00000   100%     -    1s
     0     0    0.00000    0   72   77.00000    0.00000   100%     -    1s
     0     0    0.00000    0   61   77.00000    0.00000   100%     -    2s
     0     2    0.00000    0   60   77.00000    0.00000   100%     -    2s
H   44    44                      37.0000000    4.68000  87.4%  34.2    2s
*   44    44              25      35.0000000    4.68000  86.6%  34.9    2s
H  142   108                      32.0000000    6.07317  81.0%  41.0    2s
H  227   164                      31.0000000    7.84091  74.7%  43.8    2s
*  330   197              19      30.0000000    9.78571  67.4%  39.6    2s
  1662   545   26.00000   37  247   30.00000   14.59259  51.4%  35.4    5s
* 2905   881              46      28.0000000   17.06452  39.1%  27.8    6s
  5177   971   25.96026   41  240   28.00000   20.63636  26.3%  23.3   10s
  7022   644   24.88333   37  240   28.00000   23.45000  16.2%  22.2   15s

Explored 8130 nodes (173869 simplex iterations) in 16.50 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.800000000000e+01, best bound 2.800000000000e+01, gap 0.0%