Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:55 2012

Optimize a model with 1 rows, 157 columns and 157 nonzeros
Model has 143 quadratic objective terms
Presolve removed 0 rows and 21 columns
Presolve time: 0.00s
Presolved: 144 rows, 279 columns, 565 nonzeros
Variable types: 0 continuous, 279 integer (278 binary)
Found heuristic solution: objective 41.0000000

Root relaxation: objective 0.000000e+00, 177 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   51   41.00000    0.00000   100%     -    0s
     0     0    0.00000    0   33   41.00000    0.00000   100%     -    0s
H    0     0                      23.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   21   23.00000    0.00000   100%     -    0s
H    0     0                      19.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   20   19.00000    0.00000   100%     -    0s
     0     0    0.00000    0   22   19.00000    0.00000   100%     -    0s
     0     0    0.00000    0   13   19.00000    0.00000   100%     -    0s
H    0     0                      11.0000000    0.00000   100%     -    0s
H    0     0                      10.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   11   10.00000    0.00000   100%     -    0s
H   54    42                       8.0000000    0.00000   100%   1.7    0s
H  245   156                       7.0000000    0.00000   100%   7.1    0s
H  336   154                       6.0000000    0.00000   100%   8.6    0s
*  389   106               9       4.0000000    0.00000   100%  10.8    0s

Cutting planes:
  Cover: 261

Explored 524 nodes (17237 simplex iterations) in 0.29 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%