Optimize a model with 51 rows, 1275 columns and 2550 nonzeros
Presolve time: 0.00s
Presolved: 51 rows, 1275 columns, 2550 nonzeros

Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    1.8000000e+01   9.900000e+01   0.000000e+00      0s
      77    4.1650000e+02   0.000000e+00   0.000000e+00      0s

Solved in 77 iterations and 0.00 seconds
Optimal objective  4.165000000e+02
Optimize a model with 54 rows, 1275 columns and 3465 nonzeros
Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    4.1650000e+02   3.000000e+00   0.000000e+00      0s
       9    4.2150000e+02   0.000000e+00   0.000000e+00      0s

Solved in 9 iterations and 0.00 seconds
Optimal objective  4.215000000e+02
Optimize a model with 56 rows, 1275 columns and 4300 nonzeros
Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    4.2150000e+02   2.000000e+00   0.000000e+00      0s
       5    4.2250000e+02   0.000000e+00   0.000000e+00      0s

Solved in 5 iterations and 0.00 seconds
Optimal objective  4.225000000e+02
Optimize a model with 56 rows, 1275 columns and 4300 nonzeros
Presolve time: 0.00s
Presolved: 56 rows, 1275 columns, 4300 nonzeros
Variable types: 0 continuous, 1275 integer (1275 binary)

Root relaxation: objective 4.225000e+02, 87 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0  422.50000    0   10          -  422.50000     -      -    0s
H    0     0                     449.0000000  422.50000  5.90%     -    0s
     0     0  422.50000    0    6  449.00000  422.50000  5.90%     -    0s
     0     0  422.50000    0   10  449.00000  422.50000  5.90%     -    0s
H    0     0                     442.0000000  422.50000  4.41%     -    0s
     0     0  422.50000    0    6  442.00000  422.50000  4.41%     -    0s
H    0     0                     433.0000000  422.50000  2.42%     -    0s
     0     2  423.50000    0    6  433.00000  423.50000  2.19%     -    0s
H    6     5                     431.0000000  426.00000  1.16%   1.3    0s
H   13     9                     427.0000000  426.00000  0.23%  15.9    0s
H   17    11                     426.0000000  426.00000   0.0%  20.3    0s

Cutting planes:
  Gomory: 5
  Zero half: 3

Explored 17 nodes (556 simplex iterations) in 0.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.260000000000e+02, best bound 4.260000000000e+02, gap 0.0%

Gurobi 5.0.1 (linux64) logging started Sun Nov 25 02:42:25 2012