Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:55 2012

Optimize a model with 356 rows, 87 columns and 712 nonzeros
Presolve removed 111 rows and 0 columns
Presolve time: 0.00s
Presolved: 245 rows, 87 columns, 575 nonzeros
Variable types: 0 continuous, 87 integer (87 binary)
Found heuristic solution: objective 26.0000000

Root relaxation: objective 3.318182e+01, 148 iterations, 0.00 seconds

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

     0     0   33.18182    0   81   26.00000   33.18182  27.6%     -    0s
     0     0   32.60684    0   83   26.00000   32.60684  25.4%     -    0s
H    0     0                      28.0000000   32.60684  16.5%     -    0s
H    0     0                      29.0000000   32.60684  12.4%     -    0s
     0     0   32.38225    0   85   29.00000   32.38225  11.7%     -    0s
     0     0   32.28103    0   85   29.00000   32.28103  11.3%     -    0s
     0     0   32.19055    0   84   29.00000   32.19055  11.0%     -    0s
H    0     0                      30.0000000   32.19055  7.30%     -    0s
     0     0   32.16031    0   85   30.00000   32.16031  7.20%     -    0s
     0     0   32.15264    0   86   30.00000   32.15264  7.18%     -    0s
     0     0   32.15264    0   86   30.00000   32.15264  7.18%     -    0s
     0     2   32.14286    0   86   30.00000   32.14286  7.14%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 23

Explored 18 nodes (804 simplex iterations) in 0.06 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%