Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:26:32 2012

Optimize a model with 166 rows, 404 columns and 404 nonzeros
Model has 330 quadratic constraints
Presolve removed 0 rows and 1 columns
Presolve time: 1.93s
Presolved: 166 rows, 403 columns, 403 nonzeros
Variable types: 330 continuous, 73 integer (72 binary)

Root relaxation: objective 0.000000e+00, 36 iterations, 0.00 seconds

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

H    0     0                      82.0000000          -     -      -    1s
     0     0    0.00000    0   41   82.00000    0.00000   100%     -    1s
     0     0    0.09047    0   70   82.00000    0.09047   100%     -    1s
     0     2    0.11051    0   70   82.00000    0.11051   100%     -    1s
*   52    46              30      38.0000000    3.96226  89.6%  28.9    2s
H  221   175                      36.0000000    6.93750  80.7%  33.5    2s
*  221   167              14      35.0000000    6.93750  80.2%  33.7    2s
*  250   178              14      34.0000000    6.98077  79.5%  34.3    2s
  1841   595   22.00000   29  236   34.00000   18.11111  46.7%  30.1    5s
* 2878   891              39      33.0000000   20.87500  36.7%  26.0    6s
* 3017   857              36      32.0000000   21.14286  33.9%  25.6    6s
  5193   915   26.21709   29  248   32.00000   24.42857  23.7%  23.1   10s
  6994   640     cutoff   34        32.00000   27.00000  15.6%  21.9   15s
* 7682   263              34      31.0000000   28.16216  9.15%  21.8   15s

Explored 8001 nodes (171676 simplex iterations) in 16.16 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%