Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:19:23 2012

Optimize a model with 124 rows, 308 columns and 308 nonzeros
Model has 246 quadratic constraints
Presolve time: 1.44s
Presolved: 124 rows, 308 columns, 308 nonzeros
Variable types: 246 continuous, 62 integer (62 binary)

Root relaxation: objective 0.000000e+00, 31 iterations, 0.00 seconds

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

H    0     0                      69.0000000          -     -      -    1s
     0     0    0.00000    0   11   69.00000    0.00000   100%     -    1s
     0     0    0.00000    0   18   69.00000    0.00000   100%     -    1s
     0     0    0.00000    0    4   69.00000    0.00000   100%     -    1s
     0     2    0.00000    0    4   69.00000    0.00000   100%     -    1s
H   27    27                      32.0000000    1.27856  96.0%  32.9    1s
*   30    29              22      27.0000000    1.27856  95.3%  30.3    1s
*  119    85              15      26.0000000    2.47934  90.5%  23.9    1s
*  854   362              37      25.0000000    9.07547  63.7%  26.1    2s
* 1557   290              33      24.0000000   15.25000  36.5%  21.8    3s
* 2325   267              32      23.0000000   17.61538  23.4%  19.7    4s

Explored 3041 nodes (57034 simplex iterations) in 4.91 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%