Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:57:22 2012

Optimize a model with 1 rows, 49 columns and 49 nonzeros
Model has 112 quadratic objective terms
Modified 49 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 49 columns, 49 nonzeros
Presolved model has 161 quadratic objective terms
Variable types: 0 continuous, 49 integer (49 binary)
Found heuristic solution: objective 58.0000000

Root relaxation: objective 0.000000e+00, 51 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   49   58.00000    0.00000   100%     -    0s
H    0     0                      47.0000000    0.00000   100%     -    0s
H    0     0                      40.0000000    0.00000   100%     -    0s
H    0     0                      36.0000000    0.00000   100%     -    0s
H    0     0                      27.0000000    0.00000   100%     -    0s
H    0     0                      26.0000000    0.00000   100%     -    0s
     0     2    0.87474    0   49   26.00000    0.87474  96.6%     -    0s
H  108    87                      24.0000000    2.68628  88.8%   2.2    0s
H  542   388                      23.0000000    4.42830  80.7%   2.4    0s
 60451 16936   17.52802   24   38   23.00000   17.52802  23.8%   2.6    5s
 120860 18296   19.24227   28   32   23.00000   19.24227  16.3%   2.6   10s
 181741  3995   21.60221   32   30   23.00000   21.25316  7.59%   2.6   15s

Explored 187079 nodes (482387 simplex iterations) in 15.51 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%