Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:51 2012

Optimize a model with 1 rows, 38 columns and 38 nonzeros
Model has 91 quadratic objective terms
Modified 38 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 38 columns, 38 nonzeros
Presolved model has 129 quadratic objective terms
Variable types: 0 continuous, 38 integer (38 binary)
Found heuristic solution: objective 40.0000000

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

     0     0    0.00000    0   38   40.00000    0.00000   100%     -    0s
H    0     0                      32.0000000    0.00000   100%     -    0s
H    0     0                      29.0000000    0.00000   100%     -    0s
H    0     0                      28.0000000    0.00000   100%     -    0s
H    0     0                      27.0000000    0.00000   100%     -    0s
H    0     0                      26.0000000    0.00000   100%     -    0s
     0     2    2.11502    0   38   26.00000    2.11502  91.9%     -    0s
H  136   107                      24.0000000    5.11032  78.7%   2.4    0s
H  180   143                      23.0000000    5.11032  77.8%   2.4    0s
H  354   263                      22.0000000    5.54684  74.8%   2.4    0s
H  406   265                      21.0000000    5.69752  72.9%   2.4    0s
H  498   281                      20.0000000    6.52064  67.4%   2.4    0s
H  523   270                      19.0000000    6.59740  65.3%   2.4    0s

Explored 9583 nodes (23154 simplex iterations) in 0.75 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%