Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:10 2012 Optimize a model with 460 rows, 97 columns and 920 nonzeros Presolve removed 145 rows and 0 columns Presolve time: 0.00s Presolved: 315 rows, 97 columns, 752 nonzeros Variable types: 0 continuous, 97 integer (97 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 3.564286e+01, 193 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 35.64286 0 95 27.00000 35.64286 32.0% - 0s 0 0 34.86331 0 94 27.00000 34.86331 29.1% - 0s H 0 0 29.0000000 34.86331 20.2% - 0s 0 0 34.69297 0 95 29.00000 34.69297 19.6% - 0s H 0 0 30.0000000 34.69297 15.6% - 0s 0 0 34.29464 0 94 30.00000 34.29464 14.3% - 0s 0 0 34.09705 0 94 30.00000 34.09705 13.7% - 0s 0 0 33.97806 0 93 30.00000 33.97806 13.3% - 0s 0 0 33.91703 0 95 30.00000 33.91703 13.1% - 0s 0 0 33.85321 0 95 30.00000 33.85321 12.8% - 0s 0 0 33.81100 0 95 30.00000 33.81100 12.7% - 0s 0 0 33.76128 0 95 30.00000 33.76128 12.5% - 0s 0 0 33.66220 0 97 30.00000 33.66220 12.2% - 0s 0 0 33.65214 0 93 30.00000 33.65214 12.2% - 0s 0 0 33.64500 0 95 30.00000 33.64500 12.2% - 0s 0 0 33.64500 0 95 30.00000 33.64500 12.2% - 0s 0 2 33.64430 0 95 30.00000 33.64430 12.1% - 0s Cutting planes: Gomory: 1 Zero half: 54 Explored 107 nodes (3660 simplex iterations) in 0.18 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%