Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:40:10 2012

Optimize a model with 136 rows, 349 columns and 349 nonzeros
Model has 270 quadratic constraints
Presolve removed 0 rows and 2 columns
Presolve time: 1.57s
Presolved: 136 rows, 347 columns, 347 nonzeros
Variable types: 270 continuous, 77 integer (76 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                      67.0000000          -     -      -    1s
     0     0    0.00000    0    4   67.00000    0.00000   100%     -    1s
     0     0    0.00000    0    4   67.00000    0.00000   100%     -    1s
     0     0    0.00000    0   66   67.00000    0.00000   100%     -    1s
     0     2    0.00000    0   66   67.00000    0.00000   100%     -    1s
*   52    44              31      29.0000000    3.51220  87.9%  32.7    1s
H   75    51                      26.0000000    3.54545  86.4%  30.2    1s
*  148    94              17      25.0000000    4.16000  83.4%  26.3    1s
H  176   101                      24.0000000    4.18462  82.6%  25.4    1s
*  203   102              16      23.0000000    4.51563  80.4%  25.1    1s
H  217    96                      22.0000000    5.00000  77.3%  24.7    1s
*  219    74              12      20.0000000    5.00000  75.0%  24.7    1s

Explored 2641 nodes (58723 simplex iterations) in 4.20 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%