Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:51:52 2012

Optimize a model with 98 rows, 241 columns and 241 nonzeros
Model has 194 quadratic constraints
Presolve time: 1.13s
Presolved: 98 rows, 241 columns, 241 nonzeros
Variable types: 194 continuous, 47 integer (47 binary)

Root relaxation: objective 0.000000e+00, 23 iterations, 0.00 seconds

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

H    0     0                      52.0000000          -     -      -    1s
     0     0    0.00000    0   22   52.00000    0.00000   100%     -    1s
     0     0    0.00000    0   33   52.00000    0.00000   100%     -    1s
     0     0    0.00000    0   28   52.00000    0.00000   100%     -    1s
     0     2    0.00000    0   22   52.00000    0.00000   100%     -    1s
*   28    28              17      24.0000000    5.41176  77.5%  27.4    1s
H   52    41                      23.0000000    5.43182  76.4%  22.4    1s
*   78    53              13      21.0000000    5.53333  73.7%  22.0    1s
*  293   109              11      20.0000000   10.25000  48.8%  19.6    1s
*  462    98               8      19.0000000   12.12121  36.2%  19.4    1s

Cutting planes:

Explored 781 nodes (15121 simplex iterations) in 1.51 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%