Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:22 2012

Optimize a model with 526 rows, 102 columns and 1052 nonzeros
Presolve removed 171 rows and 0 columns
Presolve time: 0.00s
Presolved: 355 rows, 102 columns, 846 nonzeros
Variable types: 0 continuous, 102 integer (102 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 3.700000e+01, 181 iterations, 0.00 seconds

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

     0     0   37.00000    0   74   25.00000   37.00000  48.0%     -    0s
H    0     0                      27.0000000   37.00000  37.0%     -    0s
     0     0   36.14286    0  101   27.00000   36.14286  33.9%     -    0s
     0     0   35.20528    0  100   27.00000   35.20528  30.4%     -    0s
     0     0   34.96438    0  101   27.00000   34.96438  29.5%     -    0s
     0     0   34.84902    0  100   27.00000   34.84902  29.1%     -    0s
     0     0   34.73188    0  100   27.00000   34.73188  28.6%     -    0s
H    0     0                      28.0000000   34.73188  24.0%     -    0s
     0     0   34.62584    0   98   28.00000   34.62584  23.7%     -    0s
     0     0   34.47761    0  100   28.00000   34.47761  23.1%     -    0s
     0     0   34.40169    0  101   28.00000   34.40169  22.9%     -    0s
     0     0   34.39636    0  101   28.00000   34.39636  22.8%     -    0s
     0     0   34.39636    0  100   28.00000   34.39636  22.8%     -    0s
     0     2   34.38436    0   99   28.00000   34.38436  22.8%     -    0s
H   14    11                      29.0000000   34.34831  18.4%  38.6    0s
*   91    17              12      30.0000000   33.66003  12.2%  28.2    0s

Cutting planes:
  Clique: 3
  Zero half: 66

Explored 238 nodes (6729 simplex iterations) in 0.26 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%