Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:02 2012

Optimize a model with 1 rows, 53 columns and 53 nonzeros
Model has 70 quadratic objective terms
Presolve removed 0 rows and 1 columns
Presolve time: 0.00s
Presolved: 71 rows, 122 columns, 262 nonzeros
Variable types: 0 continuous, 122 integer (121 binary)
Found heuristic solution: objective 24.0000000

Root relaxation: objective 0.000000e+00, 82 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   21   24.00000    0.00000   100%     -    0s
H    0     0                      20.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   19   20.00000    0.00000   100%     -    0s
H    0     0                      15.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   30   15.00000    0.00000   100%     -    0s
     0     0    0.00000    0   13   15.00000    0.00000   100%     -    0s
H    0     0                      13.0000000    0.00000   100%     -    0s
H    0     0                      12.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   12   12.00000    0.00000   100%     -    0s
     0     0    0.00000    0   16   12.00000    0.00000   100%     -    0s
     0     0    0.00000    0   16   12.00000    0.00000   100%     -    0s
     0     2    0.00000    0   16   12.00000    0.00000   100%     -    0s
H  168    88                      10.0000000    0.00000   100%   5.4    0s
H  245    86                       9.0000000    1.00000  88.9%   9.3    0s

Cutting planes:
  Cover: 134
  MIR: 3

Explored 375 nodes (6179 simplex iterations) in 0.11 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%