Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:53:23 2012 Optimize a model with 331 rows, 350 columns and 1175 nonzeros Presolve removed 0 rows and 34 columns Presolve time: 0.00s Presolved: 331 rows, 316 columns, 1141 nonzeros Variable types: 0 continuous, 316 integer (315 binary) Found heuristic solution: objective 47.0000000 Root relaxation: objective 0.000000e+00, 208 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 137 47.00000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 0 0.17859 0 139 26.00000 0.17859 99.3% - 0s H 0 0 25.0000000 0.17859 99.3% - 0s H 0 0 24.0000000 0.17859 99.3% - 0s 0 0 0.80134 0 143 24.00000 0.80134 96.7% - 0s H 0 0 17.0000000 0.80134 95.3% - 0s H 0 0 11.0000000 0.80134 92.7% - 0s 0 2 0.80734 0 143 11.00000 0.80734 92.7% - 0s * 37 20 24 7.0000000 1.00000 85.7% 26.1 0s * 86 29 10 6.0000000 1.00000 83.3% 29.8 0s Cutting planes: Gomory: 4 Zero half: 2 Explored 187 nodes (5976 simplex iterations) in 0.24 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%