Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:09:44 2012

Optimize a model with 1 rows, 36 columns and 36 nonzeros
Model has 31 quadratic objective terms
Presolve removed 0 rows and 7 columns
Presolve time: 0.00s
Presolved: 32 rows, 60 columns, 122 nonzeros
Variable types: 0 continuous, 60 integer (59 binary)
Found heuristic solution: objective 8.0000000

Root relaxation: objective 0.000000e+00, 41 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    7    8.00000    0.00000   100%     -    0s
H    0     0                       6.0000000    0.00000   100%     -    0s
     0     0    0.00000    0    4    6.00000    0.00000   100%     -    0s
H    0     0                       4.0000000    0.00000   100%     -    0s
     0     0    0.00000    0    5    4.00000    0.00000   100%     -    0s
     0     0    0.00000    0    9    4.00000    0.00000   100%     -    0s
     0     0    0.00000    0    6    4.00000    0.00000   100%     -    0s
     0     2    0.00000    0    6    4.00000    0.00000   100%     -    0s
*   58    21               9       3.0000000    0.00000   100%   2.5    0s
*  128    16               9       2.0000000    0.00000   100%   4.2    0s

Cutting planes:
  Cover: 48

Explored 146 nodes (781 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%