Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:19 2012 Optimize a model with 61 rows, 42 columns and 192 nonzeros Presolve time: 0.00s Presolved: 61 rows, 42 columns, 192 nonzeros Variable types: 0 continuous, 42 integer (42 binary) Found heuristic solution: objective 17.0000000 Found heuristic solution: objective 15.0000000 Root relaxation: objective 0.000000e+00, 17 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 12 15.00000 0.00000 100% - 0s 0 0 0.87500 0 14 15.00000 0.87500 94.2% - 0s 0 0 1.06180 0 19 15.00000 1.06180 92.9% - 0s H 0 0 12.0000000 1.06180 91.2% - 0s H 0 0 11.0000000 1.06180 90.3% - 0s 0 0 1.12500 0 14 11.00000 1.12500 89.8% - 0s 0 0 1.12500 0 14 11.00000 1.12500 89.8% - 0s 0 0 1.12500 0 14 11.00000 1.12500 89.8% - 0s 0 2 1.13690 0 14 11.00000 1.13690 89.7% - 0s * 19 2 4 9.0000000 4.60000 48.9% 7.5 0s Cutting planes: Gomory: 1 Mod-K: 4 Explored 23 nodes (239 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%