Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:40:39 2012 Optimize a model with 181 rows, 131 columns and 581 nonzeros Presolve time: 0.00s Presolved: 181 rows, 131 columns, 581 nonzeros Variable types: 0 continuous, 131 integer (131 binary) Found heuristic solution: objective 45.0000000 Root relaxation: objective 0.000000e+00, 69 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 40 45.00000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s H 0 0 37.0000000 0.00000 100% - 0s H 0 0 36.0000000 0.00000 100% - 0s 0 0 0.59375 0 41 36.00000 0.59375 98.4% - 0s H 0 0 31.0000000 0.59375 98.1% - 0s 0 0 0.71875 0 42 31.00000 0.71875 97.7% - 0s H 0 0 29.0000000 0.71875 97.5% - 0s 0 0 0.74432 0 43 29.00000 0.74432 97.4% - 0s 0 0 0.74432 0 44 29.00000 0.74432 97.4% - 0s 0 0 0.74432 0 44 29.00000 0.74432 97.4% - 0s H 0 0 27.0000000 0.74432 97.2% - 0s H 0 0 25.0000000 0.74432 97.0% - 0s 0 2 0.76250 0 44 25.00000 0.76250 97.0% - 0s * 26 24 16 23.0000000 3.56250 84.5% 20.8 0s * 40 28 9 20.0000000 3.69444 81.5% 22.2 0s * 65 28 10 19.0000000 8.18182 56.9% 19.2 0s Cutting planes: Gomory: 1 Zero half: 2 Mod-K: 3 Explored 297 nodes (5047 simplex iterations) in 0.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%