Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:23:02 2012

Optimize a model with 1 rows, 51 columns and 51 nonzeros
Model has 137 quadratic objective terms
Modified 51 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 51 columns, 51 nonzeros
Presolved model has 188 quadratic objective terms
Variable types: 0 continuous, 51 integer (51 binary)
Found heuristic solution: objective 66.0000000

Root relaxation: objective 0.000000e+00, 53 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   51   66.00000    0.00000   100%     -    0s
H    0     0                      56.0000000    0.00000   100%     -    0s
H    0     0                      47.0000000    0.00000   100%     -    0s
H    0     0                      33.0000000    0.00000   100%     -    0s
     0     2    1.82744    0   51   33.00000    1.82744  94.5%     -    0s
H  459   365                      31.0000000    6.01801  80.6%   2.2    0s
H 1199   598                      30.0000000    9.77410  67.4%   2.3    0s
 56221 22696   26.48898   28   33   30.00000   21.63623  27.9%   2.3    5s
 113503 36839   26.01787   29   31   30.00000   23.28341  22.4%   2.3   10s
 170435 45350   26.51368   28   33   30.00000   24.27046  19.1%   2.3   15s
 226786 49380   27.26837   37   24   30.00000   24.98696  16.7%   2.3   20s
 283327 49378   28.14717   27   34   30.00000   25.57397  14.8%   2.3   25s
 340431 45438   27.05867   28   30   30.00000   26.11337  13.0%   2.3   30s
 397603 37144   27.46629   29   32   30.00000   26.68417  11.1%   2.3   35s
 454436 22969   28.67716   30   31   30.00000   27.44315  8.52%   2.3   40s

Explored 498814 nodes (1156616 simplex iterations) in 44.13 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+01, best bound 3.000000000000e+01, gap 0.0%