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

Optimize a model with 1 rows, 160 columns and 160 nonzeros
Model has 128 quadratic objective terms
Presolve removed 0 rows and 31 columns
Presolve time: 0.00s
Presolved: 129 rows, 257 columns, 513 nonzeros
Variable types: 0 continuous, 257 integer (256 binary)
Found heuristic solution: objective 33.0000000

Root relaxation: objective 0.000000e+00, 151 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   39   33.00000    0.00000   100%     -    0s
     0     0    0.00000    0   18   33.00000    0.00000   100%     -    0s
H    0     0                      17.0000000    0.00000   100%     -    0s
H    0     0                      14.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   27   14.00000    0.00000   100%     -    0s
     0     0    0.00000    0   20   14.00000    0.00000   100%     -    0s
H    0     0                      10.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   15   10.00000    0.00000   100%     -    0s
H  142    73                       7.0000000    0.00000   100%   2.5    0s
H  145    70                       6.0000000    0.00000   100%   2.5    0s
H  214    58                       4.0000000    0.00000   100%   2.4    0s
H  462   109                       3.0000000    0.00000   100%   7.0    0s
*  536     6               5       2.0000000    1.00000  50.0%  12.8    0s

Cutting planes:
  Cover: 226

Explored 543 nodes (7382 simplex iterations) in 0.15 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%