Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:33:34 2012

Optimize a model with 1 rows, 160 columns and 160 nonzeros
Model has 131 quadratic objective terms
Presolve removed 0 rows and 25 columns
Presolve time: 0.00s
Presolved: 132 rows, 266 columns, 528 nonzeros
Variable types: 0 continuous, 266 integer (265 binary)
Found heuristic solution: objective 35.0000000

Root relaxation: objective 0.000000e+00, 171 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   35.00000    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
H    0     0                       8.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   12    8.00000    0.00000   100%     -    0s
     0     0    0.00000    0   12    8.00000    0.00000   100%     -    0s
     0     2    0.00000    0   12    8.00000    0.00000   100%     -    0s
H   27    27                       7.0000000    0.00000   100%   2.7    0s
H  341   136                       6.0000000    0.00000   100%   5.2    0s
*  501   195              20       5.0000000    0.00000   100%   6.6    0s
*  522   126              31       4.0000000    0.00000   100%   6.7    0s
H  539    94                       3.0000000    0.00000   100%   6.7    0s
*  584    41              23       2.0000000    0.50000  75.0%   8.1    0s

Cutting planes:
  Cover: 228

Explored 627 nodes (7196 simplex iterations) in 0.16 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%