Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:24:24 2012

Optimize a model with 1 rows, 142 columns and 142 nonzeros
Model has 112 quadratic objective terms
Presolve removed 0 rows and 27 columns
Presolve time: 0.00s
Presolved: 113 rows, 227 columns, 451 nonzeros
Variable types: 0 continuous, 227 integer (226 binary)
Found heuristic solution: objective 30.0000000

Root relaxation: objective 0.000000e+00, 135 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   34   30.00000    0.00000   100%     -    0s
     0     0    0.00000    0   17   30.00000    0.00000   100%     -    0s
H    0     0                      11.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   12   11.00000    0.00000   100%     -    0s
H    0     0                       7.0000000    0.00000   100%     -    0s
     0     0    0.00000    0    9    7.00000    0.00000   100%     -    0s
     0     0    0.00000    0   14    7.00000    0.00000   100%     -    0s
     0     0    0.00000    0   15    7.00000    0.00000   100%     -    0s
     0     0    0.00000    0   15    7.00000    0.00000   100%     -    0s
H    0     0                       6.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   15    6.00000    0.00000   100%     -    0s
H   27    14                       4.0000000    0.00000   100%   4.5    0s
H  163    50                       3.0000000    0.00000   100%   6.3    0s
H  176    32                       2.0000000    0.00000   100%   6.0    0s

Cutting planes:
  Cover: 180

Explored 268 nodes (4541 simplex iterations) in 0.09 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%