Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:06 2012

Optimize a model with 419 rows, 94 columns and 838 nonzeros
Presolve removed 149 rows and 0 columns
Presolve time: 0.00s
Presolved: 270 rows, 94 columns, 665 nonzeros
Variable types: 0 continuous, 94 integer (94 binary)
Found heuristic solution: objective 29.0000000

Root relaxation: objective 3.471622e+01, 170 iterations, 0.00 seconds

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

     0     0   34.71622    0   86   29.00000   34.71622  19.7%     -    0s
H    0     0                      30.0000000   34.71622  15.7%     -    0s
     0     0   34.00000    0   85   30.00000   34.00000  13.3%     -    0s
     0     0   34.00000    0   83   30.00000   34.00000  13.3%     -    0s
H    0     0                      31.0000000   34.00000  9.68%     -    0s
     0     0   34.00000    0   87   31.00000   34.00000  9.68%     -    0s
     0     0   34.00000    0   87   31.00000   34.00000  9.68%     -    0s
H    0     0                      32.0000000   34.00000  6.25%     -    0s
     0     2   34.00000    0   87   32.00000   34.00000  6.25%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 14

Explored 19 nodes (1329 simplex iterations) in 0.07 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%