Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:14 2012

Optimize a model with 503 rows, 99 columns and 1006 nonzeros
Presolve removed 189 rows and 0 columns
Presolve time: 0.00s
Presolved: 314 rows, 99 columns, 791 nonzeros
Variable types: 0 continuous, 99 integer (99 binary)
Found heuristic solution: objective 26.0000000

Root relaxation: objective 3.509116e+01, 197 iterations, 0.00 seconds

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

     0     0   35.09116    0   98   26.00000   35.09116  35.0%     -    0s
     0     0   34.68027    0   98   26.00000   34.68027  33.4%     -    0s
H    0     0                      27.0000000   34.68027  28.4%     -    0s
     0     0   34.52187    0   98   27.00000   34.52187  27.9%     -    0s
     0     0   34.31294    0   98   27.00000   34.31294  27.1%     -    0s
     0     0   33.97445    0   98   27.00000   33.97445  25.8%     -    0s
     0     0   33.89529    0   97   27.00000   33.89529  25.5%     -    0s
     0     0   33.84569    0   96   27.00000   33.84569  25.4%     -    0s
     0     0   33.75661    0   98   27.00000   33.75661  25.0%     -    0s
     0     0   33.74966    0   98   27.00000   33.74966  25.0%     -    0s
     0     0   33.74966    0   96   27.00000   33.74966  25.0%     -    0s
H    0     0                      28.0000000   33.74966  20.5%     -    0s
     0     2   33.74894    0   96   28.00000   33.74894  20.5%     -    0s
*   13    13               9      29.0000000   33.68202  16.1%  31.4    0s
*  250     3              11      30.0000000   31.08333  3.61%  23.3    0s

Cutting planes:
  Clique: 1
  Zero half: 38

Explored 254 nodes (6483 simplex iterations) in 0.25 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%