Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:51:54 2012

Optimize a model with 665 rows, 115 columns and 1330 nonzeros
Presolve removed 241 rows and 0 columns
Presolve time: 0.00s
Presolved: 424 rows, 115 columns, 1075 nonzeros
Variable types: 0 continuous, 115 integer (115 binary)
Found heuristic solution: objective 27.0000000

Root relaxation: objective 3.975510e+01, 270 iterations, 0.01 seconds

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

     0     0   39.75510    0  113   27.00000   39.75510  47.2%     -    0s
H    0     0                      30.0000000   39.75510  32.5%     -    0s
     0     0   39.21550    0  114   30.00000   39.21550  30.7%     -    0s
     0     0   38.86678    0  114   30.00000   38.86678  29.6%     -    0s
     0     0   38.69136    0  114   30.00000   38.69136  29.0%     -    0s
     0     0   38.30817    0  112   30.00000   38.30817  27.7%     -    0s
     0     0   38.24145    0  113   30.00000   38.24145  27.5%     -    0s
     0     0   38.18725    0  112   30.00000   38.18725  27.3%     -    0s
     0     0   38.14619    0  114   30.00000   38.14619  27.2%     -    0s
     0     0   38.10725    0  113   30.00000   38.10725  27.0%     -    0s
     0     0   38.10639    0  114   30.00000   38.10639  27.0%     -    0s
     0     0   38.10639    0  114   30.00000   38.10639  27.0%     -    0s
     0     2   38.10591    0  114   30.00000   38.10591  27.0%     -    0s
H   12    12                      32.0000000   38.03809  18.9%  57.8    0s

Cutting planes:
  Zero half: 41

Explored 963 nodes (25164 simplex iterations) in 0.91 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%