Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:24:14 2012 Optimize a model with 229 rows, 186 columns and 756 nonzeros Presolve removed 0 rows and 3 columns Presolve time: 0.00s Presolved: 229 rows, 183 columns, 753 nonzeros Variable types: 0 continuous, 183 integer (182 binary) Found heuristic solution: objective 50.0000000 Root relaxation: objective 0.000000e+00, 117 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 68 50.00000 0.00000 100% - 0s H 0 0 42.0000000 0.00000 100% - 0s H 0 0 38.0000000 0.00000 100% - 0s 0 0 0.75294 0 69 38.00000 0.75294 98.0% - 0s H 0 0 36.0000000 0.75294 97.9% - 0s 0 0 1.08810 0 72 36.00000 1.08810 97.0% - 0s H 0 0 35.0000000 1.08810 96.9% - 0s 0 0 1.08952 0 71 35.00000 1.08952 96.9% - 0s H 0 0 29.0000000 1.08952 96.2% - 0s 0 0 1.08952 0 71 29.00000 1.08952 96.2% - 0s H 0 0 26.0000000 1.08952 95.8% - 0s H 0 0 25.0000000 1.08952 95.6% - 0s 0 2 1.09640 0 71 25.00000 1.09640 95.6% - 0s * 30 30 22 23.0000000 2.47631 89.2% 26.8 0s * 53 43 16 20.0000000 2.48412 87.6% 25.8 0s * 112 76 15 19.0000000 4.73333 75.1% 26.2 0s * 166 92 15 18.0000000 5.60000 68.9% 26.0 0s * 281 87 12 17.0000000 6.06639 64.3% 21.9 0s Cutting planes: Gomory: 3 Mod-K: 1 Explored 1247 nodes (24889 simplex iterations) in 0.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%