Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:40:48 2012

Optimize a model with 173 rows, 423 columns and 423 nonzeros
Model has 344 quadratic constraints
Presolve time: 2.01s
Presolved: 173 rows, 423 columns, 423 nonzeros
Variable types: 344 continuous, 79 integer (79 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                      91.0000000          -     -      -    2s
     0     0    0.00000    0   71   91.00000    0.00000   100%     -    2s
     0     0    0.44286    0   78   91.00000    0.44286   100%     -    2s
     0     2    0.47347    0   78   91.00000    0.47347  99.5%     -    2s
H   51    51                      35.0000000    4.54286  87.0%  27.7    2s
*  111    79              17      33.0000000    7.69242  76.7%  31.2    2s
H  532   223                      31.0000000   13.93333  55.1%  31.4    2s
*  532   214              18      30.0000000   13.93333  53.6%  31.4    2s
  1673   443     cutoff   33        30.00000   17.94286  40.2%  32.1    5s
* 4787   714              31      29.0000000   23.83333  17.8%  21.6    7s

Explored 6073 nodes (124526 simplex iterations) in 9.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0%