Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:57 2012

Optimize a model with 1 rows, 47 columns and 47 nonzeros
Model has 50 quadratic objective terms
Presolve removed 0 rows and 6 columns
Presolve time: 0.00s
Presolved: 51 rows, 91 columns, 191 nonzeros
Variable types: 0 continuous, 91 integer (90 binary)
Found heuristic solution: objective 18.0000000

Root relaxation: objective 0.000000e+00, 63 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   12   18.00000    0.00000   100%     -    0s
H    0     0                      12.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   10   12.00000    0.00000   100%     -    0s
H    0     0                       9.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   25    9.00000    0.00000   100%     -    0s
     0     0    0.00000    0   10    9.00000    0.00000   100%     -    0s
H    0     0                       7.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   11    7.00000    0.00000   100%     -    0s
     0     0    0.00000    0   11    7.00000    0.00000   100%     -    0s
     0     2    0.00000    0   11    7.00000    0.00000   100%     -    0s
*   80    43               9       6.0000000    0.00000   100%   3.4    0s
*  130    53              10       5.0000000    0.00000   100%   4.3    0s
H  183    38                       4.0000000    1.55556  61.1%   4.5    0s

Cutting planes:
  Cover: 87
  MIR: 4

Explored 224 nodes (1572 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%