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 78 quadratic objective terms
Presolve time: 0.00s
Presolved: 79 rows, 131 columns, 287 nonzeros
Variable types: 0 continuous, 131 integer (131 binary)
Found heuristic solution: objective 41.0000000

Root relaxation: objective 0.000000e+00, 99 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   41.00000    0.00000   100%     -    0s
H    0     0                      21.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   29   21.00000    0.00000   100%     -    0s
H    0     0                      18.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   14   18.00000    0.00000   100%     -    0s
H    0     0                      13.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   17   13.00000    0.00000   100%     -    0s
     0     0    0.00000    0   22   13.00000    0.00000   100%     -    0s
     0     0    0.00000    0   20   13.00000    0.00000   100%     -    0s
H    0     0                      12.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   20   12.00000    0.00000   100%     -    0s
H  188   110                      11.0000000    0.00000   100%   6.0    0s
H  220    88                       9.0000000    0.00000   100%   6.2    0s

Cutting planes:
  Cover: 150

Explored 368 nodes (7450 simplex iterations) in 0.12 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%