Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:44 2012 Optimize a model with 250 rows, 70 columns and 500 nonzeros Presolve removed 75 rows and 0 columns Presolve time: 0.00s Presolved: 175 rows, 70 columns, 406 nonzeros Variable types: 0 continuous, 70 integer (70 binary) Found heuristic solution: objective 25.0000000 Root relaxation: objective 2.820000e+01, 110 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 28.20000 0 64 25.00000 28.20000 12.8% - 0s 0 0 27.66667 0 60 25.00000 27.66667 10.7% - 0s 0 0 27.60150 0 69 25.00000 27.60150 10.4% - 0s 0 0 27.15217 0 67 25.00000 27.15217 8.61% - 0s 0 0 27.00000 0 67 25.00000 27.00000 8.00% - 0s 0 0 26.83182 0 69 25.00000 26.83182 7.33% - 0s 0 0 26.72222 0 68 25.00000 26.72222 6.89% - 0s 0 0 26.65116 0 67 25.00000 26.65116 6.60% - 0s 0 0 26.59091 0 69 25.00000 26.59091 6.36% - 0s 0 0 26.42429 0 68 25.00000 26.42429 5.70% - 0s 0 0 26.41923 0 68 25.00000 26.41923 5.68% - 0s 0 0 26.41923 0 68 25.00000 26.41923 5.68% - 0s 0 2 26.41711 0 68 25.00000 26.41711 5.67% - 0s Cutting planes: Zero half: 29 Explored 10 nodes (562 simplex iterations) in 0.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%