Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:37 2012

Optimize a model with 397 rows, 129 columns and 794 nonzeros
Presolve removed 54 rows and 0 columns
Presolve time: 0.00s
Presolved: 343 rows, 129 columns, 718 nonzeros
Variable types: 0 continuous, 129 integer (129 binary)
Found heuristic solution: objective 44.0000000

Root relaxation: objective 5.800000e+01, 176 iterations, 0.00 seconds

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

     0     0   58.00000    0  112   44.00000   58.00000  31.8%     -    0s
H    0     0                      45.0000000   58.00000  28.9%     -    0s
     0     0   56.03226    0  128   45.00000   56.03226  24.5%     -    0s
H    0     0                      48.0000000   56.03226  16.7%     -    0s
H    0     0                      49.0000000   56.03226  14.4%     -    0s
     0     0   55.07143    0  126   49.00000   55.07143  12.4%     -    0s
H    0     0                      50.0000000   55.07143  10.1%     -    0s
     0     0   54.56443    0  127   50.00000   54.56443  9.13%     -    0s
     0     0   53.84764    0  125   50.00000   53.84764  7.70%     -    0s
     0     0   53.35873    0  126   50.00000   53.35873  6.72%     -    0s
     0     0   53.26953    0  127   50.00000   53.26953  6.54%     -    0s
     0     0   53.12421    0  129   50.00000   53.12421  6.25%     -    0s
     0     0   53.08968    0  129   50.00000   53.08968  6.18%     -    0s
     0     0   53.08968    0  129   50.00000   53.08968  6.18%     -    0s
H    0     0                      51.0000000   53.08968  4.10%     -    0s
     0     2   53.08828    0  128   51.00000   53.08828  4.09%     -    0s

Cutting planes:
  Zero half: 54

Explored 19 nodes (1519 simplex iterations) in 0.10 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.100000000000e+01, best bound 5.100000000000e+01, gap 0.0%