Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:57 2012

Optimize a model with 368 rows, 88 columns and 736 nonzeros
Presolve removed 110 rows and 0 columns
Presolve time: 0.00s
Presolved: 258 rows, 88 columns, 606 nonzeros
Variable types: 0 continuous, 88 integer (88 binary)
Found heuristic solution: objective 26.0000000

Root relaxation: objective 3.400000e+01, 131 iterations, 0.00 seconds

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

     0     0   34.00000    0   64   26.00000   34.00000  30.8%     -    0s
     0     0   32.79630    0   85   26.00000   32.79630  26.1%     -    0s
H    0     0                      27.0000000   32.79630  21.5%     -    0s
     0     0   32.05263    0   82   27.00000   32.05263  18.7%     -    0s
     0     0   31.59146    0   84   27.00000   31.59146  17.0%     -    0s
     0     0   31.53750    0   84   27.00000   31.53750  16.8%     -    0s
     0     0   31.38402    0   87   27.00000   31.38402  16.2%     -    0s
     0     0   31.30826    0   86   27.00000   31.30826  16.0%     -    0s
     0     0   31.29891    0   87   27.00000   31.29891  15.9%     -    0s
     0     0   31.29891    0   85   27.00000   31.29891  15.9%     -    0s
H    0     0                      28.0000000   31.29891  11.8%     -    0s
     0     2   31.29891    0   85   28.00000   31.29891  11.8%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 61

Explored 117 nodes (2892 simplex iterations) in 0.11 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.800000000000e+01, best bound 2.800000000000e+01, gap 0.0%