Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:28:23 2012

Optimize a model with 1047 rows, 139 columns and 2094 nonzeros
Presolve removed 424 rows and 0 columns
Presolve time: 0.01s
Presolved: 623 rows, 139 columns, 1690 nonzeros
Variable types: 0 continuous, 139 integer (139 binary)
Found heuristic solution: objective 29.0000000

Root relaxation: objective 4.375100e+01, 420 iterations, 0.01 seconds

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

     0     0   43.75100    0  139   29.00000   43.75100  50.9%     -    0s
     0     0   43.38204    0  139   29.00000   43.38204  49.6%     -    0s
     0     0   43.28011    0  139   29.00000   43.28011  49.2%     -    0s
     0     0   43.07608    0  139   29.00000   43.07608  48.5%     -    0s
H    0     0                      31.0000000   43.07608  39.0%     -    0s
     0     0   43.02570    0  139   31.00000   43.02570  38.8%     -    0s
     0     0   43.01981    0  139   31.00000   43.01981  38.8%     -    0s
     0     0   43.01981    0  139   31.00000   43.01981  38.8%     -    0s
     0     2   43.01977    0  139   31.00000   43.01977  38.8%     -    0s
H   85    39                      33.0000000   42.34396  28.3%  51.1    0s
  2396   843   36.58730   27   97   33.00000   38.61505  17.0%  39.7    5s
  6565  1846   34.81250   28   86   33.00000   36.99679  12.1%  33.6   10s
 12281  1917   34.20000   24   65   33.00000   35.80000  8.48%  29.8   15s

Explored 18550 nodes (497316 simplex iterations) in 19.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%