Gurobi 5.0.1 (linux64) logging started Tue Nov 20 14:57:53 2012

Optimize a model with 918 rows, 193 columns and 1836 nonzeros
Presolve removed 206 rows and 0 columns
Presolve time: 0.01s
Presolved: 712 rows, 193 columns, 1568 nonzeros
Variable types: 0 continuous, 193 integer (193 binary)
Found heuristic solution: objective 54.0000000

Root relaxation: objective 7.634091e+01, 438 iterations, 0.01 seconds

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

     0     0   76.34091    0  185   54.00000   76.34091  41.4%     -    0s
H    0     0                      56.0000000   76.34091  36.3%     -    0s
     0     0   75.08621    0  186   56.00000   75.08621  34.1%     -    0s
H    0     0                      60.0000000   75.08621  25.1%     -    0s
     0     0   74.54927    0  189   60.00000   74.54927  24.2%     -    0s
     0     0   74.03230    0  191   60.00000   74.03230  23.4%     -    0s
     0     0   73.65399    0  192   60.00000   73.65399  22.8%     -    0s
     0     0   73.47240    0  190   60.00000   73.47240  22.5%     -    0s
     0     0   73.22917    0  190   60.00000   73.22917  22.0%     -    0s
     0     0   73.05513    0  192   60.00000   73.05513  21.8%     -    0s
     0     0   72.90626    0  190   60.00000   72.90626  21.5%     -    0s
     0     0   72.80634    0  190   60.00000   72.80634  21.3%     -    0s
     0     0   72.70356    0  190   60.00000   72.70356  21.2%     -    0s
     0     0   72.57947    0  192   60.00000   72.57947  21.0%     -    0s
     0     0   72.52507    0  191   60.00000   72.52507  20.9%     -    0s
     0     0   72.49328    0  191   60.00000   72.49328  20.8%     -    0s
     0     0   72.49328    0  191   60.00000   72.49328  20.8%     -    0s
H    0     0                      61.0000000   72.49328  18.8%     -    0s
     0     2   72.48976    0  191   61.00000   72.48976  18.8%     -    0s
H   28    14                      63.0000000   72.48216  15.1%  59.8    0s
H   82    34                      64.0000000   71.84634  12.3%  55.0    0s
   609   217   66.07692    8  189   64.00000   69.90213  9.22%  48.5    5s
   617   223   67.67273    7  190   64.00000   69.90213  9.22%  47.9   10s
   625   228   68.10448   14  190   64.00000   69.90213  9.22%  47.3   15s
   757   286   67.43373   20  144   64.00000   69.90213  9.22%  60.5   20s
H  935   279                      65.0000000   69.86164  7.48%  59.7   20s
  2062   302   67.15294   18  150   65.00000   67.77872  4.27%  54.2   25s

Cutting planes:
  Gomory: 1
  Zero half: 204

Explored 2933 nodes (145308 simplex iterations) in 27.84 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.500000000000e+01, best bound 6.500000000000e+01, gap 0.0%