Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:10 2012

Optimize a model with 479 rows, 97 columns and 958 nonzeros
Presolve removed 167 rows and 0 columns
Presolve time: 0.00s
Presolved: 312 rows, 97 columns, 770 nonzeros
Variable types: 0 continuous, 97 integer (97 binary)
Found heuristic solution: objective 23.0000000

Root relaxation: objective 3.366667e+01, 213 iterations, 0.00 seconds

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

     0     0   33.66667    0   89   23.00000   33.66667  46.4%     -    0s
H    0     0                      24.0000000   33.66667  40.3%     -    0s
     0     0   33.21887    0   97   24.00000   33.21887  38.4%     -    0s
H    0     0                      25.0000000   33.21887  32.9%     -    0s
     0     0   32.95208    0   94   25.00000   32.95208  31.8%     -    0s
     0     0   32.74957    0   96   25.00000   32.74957  31.0%     -    0s
H    0     0                      26.0000000   32.74957  26.0%     -    0s
     0     0   32.46422    0   97   26.00000   32.46422  24.9%     -    0s
     0     0   32.38812    0   97   26.00000   32.38812  24.6%     -    0s
H    0     0                      27.0000000   32.38812  20.0%     -    0s
     0     0   32.35427    0   95   27.00000   32.35427  19.8%     -    0s
     0     0   32.34842    0   95   27.00000   32.34842  19.8%     -    0s
     0     0   32.34842    0   92   27.00000   32.34842  19.8%     -    0s
     0     2   32.33857    0   92   27.00000   32.33857  19.8%     -    0s
*   40    17              10      28.0000000   32.12070  14.7%  23.1    0s
*  178    20               7      29.0000000   30.80060  6.21%  22.0    0s

Cutting planes:
  Zero half: 47

Explored 223 nodes (5160 simplex iterations) in 0.20 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0%