Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:17 2012 Optimize a model with 498 rows, 100 columns and 996 nonzeros Presolve removed 165 rows and 0 columns Presolve time: 0.00s Presolved: 333 rows, 100 columns, 793 nonzeros Variable types: 0 continuous, 100 integer (100 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 3.653482e+01, 226 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 36.53482 0 98 29.00000 36.53482 26.0% - 0s 0 0 35.83825 0 100 29.00000 35.83825 23.6% - 0s 0 0 35.48859 0 98 29.00000 35.48859 22.4% - 0s 0 0 35.18038 0 99 29.00000 35.18038 21.3% - 0s 0 0 34.86085 0 98 29.00000 34.86085 20.2% - 0s 0 0 34.77593 0 98 29.00000 34.77593 19.9% - 0s 0 0 34.65641 0 99 29.00000 34.65641 19.5% - 0s 0 0 34.61138 0 99 29.00000 34.61138 19.3% - 0s 0 0 34.53846 0 99 29.00000 34.53846 19.1% - 0s 0 0 34.52891 0 100 29.00000 34.52891 19.1% - 0s 0 0 34.52891 0 100 29.00000 34.52891 19.1% - 0s 0 2 34.52661 0 100 29.00000 34.52661 19.1% - 0s * 34 16 5 30.0000000 33.99916 13.3% 32.2 0s Cutting planes: Zero half: 58 Explored 225 nodes (6555 simplex iterations) in 0.29 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%