Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:56 2012 Optimize a model with 135 rows, 114 columns and 449 nonzeros Presolve time: 0.00s Presolved: 135 rows, 114 columns, 449 nonzeros Variable types: 0 continuous, 114 integer (114 binary) Found heuristic solution: objective 29.0000000 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 46 29.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.35261 0 48 20.00000 0.35261 98.2% - 0s H 0 0 18.0000000 0.35261 98.0% - 0s 0 0 1.10442 0 50 18.00000 1.10442 93.9% - 0s H 0 0 16.0000000 1.10442 93.1% - 0s 0 0 1.14030 0 50 16.00000 1.14030 92.9% - 0s H 0 0 15.0000000 1.14030 92.4% - 0s 0 0 1.16129 0 51 15.00000 1.16129 92.3% - 0s 0 0 1.16129 0 51 15.00000 1.16129 92.3% - 0s H 0 0 9.0000000 1.16129 87.1% - 0s 0 2 1.23841 0 51 9.00000 1.23841 86.2% - 0s * 11 6 8 8.0000000 3.32434 58.4% 18.5 0s Cutting planes: Gomory: 3 Zero half: 1 Mod-K: 1 Explored 28 nodes (749 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%