Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:25:01 2012

Optimize a model with 121 rows, 312 columns and 312 nonzeros
Model has 240 quadratic constraints
Presolve removed 0 rows and 1 columns
Presolve time: 1.40s
Presolved: 121 rows, 311 columns, 311 nonzeros
Variable types: 240 continuous, 71 integer (70 binary)

Root relaxation: objective 0.000000e+00, 36 iterations, 0.00 seconds

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

H    0     0                      59.0000000          -     -      -    1s
     0     0    0.00000    0   51   59.00000    0.00000   100%     -    1s
     0     0    0.35545    0   69   59.00000    0.35545  99.4%     -    1s
H    0     0                      57.0000000    0.35545  99.4%     -    1s
     0     2    0.35585    0   69   57.00000    0.35585  99.4%     -    1s
*   34    34              22      25.0000000    3.47368  86.1%  26.6    1s
H   59    43                      21.0000000    3.54598  83.1%  25.6    1s
*  210    85              12      20.0000000    7.01609  64.9%  26.3    1s
*  219    80              12      19.0000000    7.01639  63.1%  26.5    1s
*  517    64              14      18.0000000   13.00000  27.8%  28.0    1s

Cutting planes:
  Gomory: 1

Explored 681 nodes (19380 simplex iterations) in 1.90 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%