Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:21:30 2012

Optimize a model with 112 rows, 289 columns and 289 nonzeros
Model has 222 quadratic constraints
Presolve removed 0 rows and 3 columns
Presolve time: 1.29s
Presolved: 112 rows, 286 columns, 286 nonzeros
Variable types: 222 continuous, 64 integer (63 binary)

Root relaxation: objective 0.000000e+00, 33 iterations, 0.00 seconds

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

H    0     0                      58.0000000          -     -      -    1s
     0     0    0.00000    0    3   58.00000    0.00000   100%     -    1s
     0     0    0.00000    0   57   58.00000    0.00000   100%     -    1s
     0     0    0.00000    0   55   58.00000    0.00000   100%     -    1s
     0     2    0.00000    0   54   58.00000    0.00000   100%     -    1s
*   27    25              18      21.0000000    3.34286  84.1%  35.2    1s
*  100    59              13      18.0000000    4.66667  74.1%  29.0    1s
H  120    54                      16.0000000    4.83333  69.8%  29.2    1s
H  275    41                      15.0000000    9.52381  36.5%  28.3    1s

Cutting planes:

Explored 363 nodes (10211 simplex iterations) in 1.55 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%