Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:16 2012

Optimize a model with 511 rows, 100 columns and 1022 nonzeros
Presolve removed 174 rows and 0 columns
Presolve time: 0.00s
Presolved: 337 rows, 100 columns, 819 nonzeros
Variable types: 0 continuous, 100 integer (100 binary)
Found heuristic solution: objective 26.0000000

Root relaxation: objective 3.552727e+01, 237 iterations, 0.00 seconds

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

     0     0   35.52727    0   95   26.00000   35.52727  36.6%     -    0s
H    0     0                      27.0000000   35.52727  31.6%     -    0s
     0     0   34.94974    0   96   27.00000   34.94974  29.4%     -    0s
H    0     0                      28.0000000   34.94974  24.8%     -    0s
     0     0   34.48684    0   95   28.00000   34.48684  23.2%     -    0s
     0     0   34.02238    0   96   28.00000   34.02238  21.5%     -    0s
     0     0   33.90365    0   97   28.00000   33.90365  21.1%     -    0s
     0     0   33.80645    0   96   28.00000   33.80645  20.7%     -    0s
     0     0   33.76884    0   98   28.00000   33.76884  20.6%     -    0s
     0     0   33.73039    0   99   28.00000   33.73039  20.5%     -    0s
     0     0   33.70759    0   98   28.00000   33.70759  20.4%     -    0s
     0     0   33.67237    0   99   28.00000   33.67237  20.3%     -    0s
     0     0   33.66892    0  100   28.00000   33.66892  20.2%     -    0s
     0     0   33.66892    0  100   28.00000   33.66892  20.2%     -    0s
     0     2   33.66606    0  100   28.00000   33.66606  20.2%     -    0s
*   30    13               9      29.0000000   33.48909  15.5%  25.3    0s

Cutting planes:
  Clique: 4
  Zero half: 50

Explored 356 nodes (8539 simplex iterations) in 0.31 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%