Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:58:53 2012

Optimize a model with 771 rows, 124 columns and 1542 nonzeros
Presolve removed 293 rows and 0 columns
Presolve time: 0.00s
Presolved: 478 rows, 124 columns, 1225 nonzeros
Variable types: 0 continuous, 124 integer (124 binary)
Found heuristic solution: objective 28.0000000

Root relaxation: objective 4.173606e+01, 329 iterations, 0.01 seconds

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

     0     0   41.73606    0  124   28.00000   41.73606  49.1%     -    0s
H    0     0                      30.0000000   41.73606  39.1%     -    0s
     0     0   41.26245    0  123   30.00000   41.26245  37.5%     -    0s
     0     0   40.81667    0  124   30.00000   40.81667  36.1%     -    0s
     0     0   40.65692    0  123   30.00000   40.65692  35.5%     -    0s
     0     0   40.62610    0  123   30.00000   40.62610  35.4%     -    0s
     0     0   40.52825    0  122   30.00000   40.52825  35.1%     -    0s
     0     0   40.42661    0  123   30.00000   40.42661  34.8%     -    0s
     0     0   40.40219    0  123   30.00000   40.40219  34.7%     -    0s
     0     0   40.39774    0  123   30.00000   40.39774  34.7%     -    0s
     0     0   40.39774    0  123   30.00000   40.39774  34.7%     -    0s
H    0     0                      32.0000000   40.39774  26.2%     -    0s
     0     2   40.39072    0  123   32.00000   40.39072  26.2%     -    0s
  4731  1036   33.87500   29   86   32.00000   35.49650  10.9%  26.6    5s

Explored 10687 nodes (242218 simplex iterations) in 8.56 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%