Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:23 2012

Optimize a model with 1 rows, 13 columns and 13 nonzeros
Model has 44 quadratic objective terms
Modified 13 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 13 columns, 13 nonzeros
Presolved model has 57 quadratic objective terms
Variable types: 0 continuous, 13 integer (13 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 0.000000e+00, 15 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   13   25.00000    0.00000   100%     -    0s
H    0     0                      22.0000000    0.00000   100%     -    0s
H    0     0                      21.0000000    0.00000   100%     -    0s
     0     2    2.71253    0   13   21.00000    2.71253  87.1%     -    0s
*   23    14               9      20.0000000    4.52423  77.4%   2.1    0s
H   25    14                      18.0000000    5.04334  72.0%   2.0    0s

Explored 498 nodes (1070 simplex iterations) in 0.02 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%