Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:03 2012

Optimize a model with 440 rows, 93 columns and 880 nonzeros
Presolve removed 155 rows and 0 columns
Presolve time: 0.00s
Presolved: 285 rows, 93 columns, 697 nonzeros
Variable types: 0 continuous, 93 integer (93 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 3.375000e+01, 168 iterations, 0.00 seconds

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

     0     0   33.75000    0   84   25.00000   33.75000  35.0%     -    0s
H    0     0                      27.0000000   33.75000  25.0%     -    0s
H    0     0                      29.0000000   33.75000  16.4%     -    0s
     0     0   33.00000    0   86   29.00000   33.00000  13.8%     -    0s
     0     0   32.81439    0   92   29.00000   32.81439  13.2%     -    0s
H    0     0                      30.0000000   32.81439  9.38%     -    0s
     0     0   32.69167    0   92   30.00000   32.69167  8.97%     -    0s
     0     0   32.55403    0   91   30.00000   32.55403  8.51%     -    0s
     0     0   32.48657    0   91   30.00000   32.48657  8.29%     -    0s
     0     0   32.44309    0   92   30.00000   32.44309  8.14%     -    0s
     0     0   32.36462    0   90   30.00000   32.36462  7.88%     -    0s
     0     0   32.35583    0   90   30.00000   32.35583  7.85%     -    0s
     0     0   32.35583    0   89   30.00000   32.35583  7.85%     -    0s
     0     2   32.35583    0   89   30.00000   32.35583  7.85%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 1
  Zero half: 35

Explored 22 nodes (1320 simplex iterations) in 0.09 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+01, best bound 3.000000000000e+01, gap 0.0%