Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:03:54 2012

Optimize a model with 136 rows, 319 columns and 319 nonzeros
Model has 270 quadratic constraints
Presolve time: 1.57s
Presolved: 136 rows, 319 columns, 319 nonzeros
Variable types: 270 continuous, 49 integer (49 binary)

Root relaxation: objective 0.000000e+00, 24 iterations, 0.00 seconds

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

H    0     0                      68.0000000          -     -      -    1s
     0     0    0.00000    0   20   68.00000    0.00000   100%     -    1s
     0     0    0.00000    0   29   68.00000    0.00000   100%     -    1s
     0     0    0.00000    0   29   68.00000    0.00000   100%     -    1s
     0     2    0.00000    0   29   68.00000    0.00000   100%     -    1s
*   24    24              19      42.0000000    4.94737  88.2%  28.7    1s
H   51    41                      35.0000000    4.97297  85.8%  24.7    1s
*   51    41              16      34.0000000    4.97297  85.4%  25.3    1s
* 1603   376              39      33.0000000   18.53386  43.8%  29.2    3s
H 1606   342                      32.0000000   18.53386  42.1%  29.1    3s
  3149   345     cutoff   35        32.00000   25.50000  20.3%  23.8    5s
* 3579   240              35      31.0000000   27.00000  12.9%  23.0    5s

Explored 3942 nodes (87273 simplex iterations) in 5.88 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%