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 128 quadratic objective terms
Presolve removed 0 rows and 29 columns
Presolve time: 0.00s
Presolved: 129 rows, 259 columns, 515 nonzeros
Variable types: 0 continuous, 259 integer (258 binary)
Found heuristic solution: objective 36.0000000

Root relaxation: objective 0.000000e+00, 152 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   41   36.00000    0.00000   100%     -    0s
     0     0    0.00000    0   22   36.00000    0.00000   100%     -    0s
H    0     0                      19.0000000    0.00000   100%     -    0s
H    0     0                      17.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   24   17.00000    0.00000   100%     -    0s
     0     0    0.00000    0   11   17.00000    0.00000   100%     -    0s
H    0     0                      11.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   11   11.00000    0.00000   100%     -    0s
H   27    22                      10.0000000    0.00000   100%   2.0    0s
H   54    42                       9.0000000    0.00000   100%   2.3    0s
H  216   129                       8.0000000    0.00000   100%   4.4    0s
H  262   128                       7.0000000    0.00000   100%   4.7    0s
H  263    93                       5.0000000    0.00000   100%   4.9    0s
H  264    27                       2.0000000    0.00000   100%   4.9    0s

Cutting planes:
  Cover: 217

Explored 430 nodes (5171 simplex iterations) in 0.11 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%