Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:33 2012

Optimize a model with 1 rows, 30 columns and 30 nonzeros
Model has 45 quadratic objective terms
Presolve time: 0.00s
Presolved: 46 rows, 75 columns, 165 nonzeros
Variable types: 0 continuous, 75 integer (75 binary)
Found heuristic solution: objective 19.0000000

Root relaxation: objective 0.000000e+00, 56 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   14   19.00000    0.00000   100%     -    0s
H    0     0                      14.0000000    0.00000   100%     -    0s
H    0     0                      13.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   24   13.00000    0.00000   100%     -    0s
     0     0    0.00000    0   14   13.00000    0.00000   100%     -    0s
H    0     0                      12.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   13   12.00000    0.00000   100%     -    0s
     0     0    0.00000    0   13   12.00000    0.00000   100%     -    0s
     0     0    0.00000    0   13   12.00000    0.00000   100%     -    0s
H    0     0                      11.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   13   11.00000    0.00000   100%     -    0s
H   12    12                      10.0000000    0.00000   100%   2.9    0s
H   63    38                       9.0000000    0.00000   100%   3.3    0s
*  139    60               9       8.0000000    1.50000  81.2%   5.6    0s

Cutting planes:
  Cover: 83
  MIR: 5
  Zero half: 1

Explored 223 nodes (2099 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%