Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:54:00 2012 Optimize a model with 215 rows, 128 columns and 663 nonzeros Presolve time: 0.00s Presolved: 215 rows, 128 columns, 663 nonzeros Variable types: 0 continuous, 128 integer (128 binary) Found heuristic solution: objective 64.0000000 Found heuristic solution: objective 56.0000000 Root relaxation: objective 0.000000e+00, 42 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 21 56.00000 0.00000 100% - 0s H 0 0 54.0000000 0.00000 100% - 0s H 0 0 51.0000000 0.00000 100% - 0s 0 0 1.19490 0 31 51.00000 1.19490 97.7% - 0s 0 0 1.20892 0 32 51.00000 1.20892 97.6% - 0s H 0 0 46.0000000 1.20892 97.4% - 0s 0 0 1.20892 0 32 46.00000 1.20892 97.4% - 0s 0 0 1.22449 0 24 46.00000 1.22449 97.3% - 0s 0 0 1.31042 0 33 46.00000 1.31042 97.2% - 0s 0 0 1.32996 0 40 46.00000 1.32996 97.1% - 0s 0 0 1.41497 0 23 46.00000 1.41497 96.9% - 0s 0 0 1.41497 0 23 46.00000 1.41497 96.9% - 0s 0 0 1.41497 0 23 46.00000 1.41497 96.9% - 0s 0 0 1.41497 0 23 46.00000 1.41497 96.9% - 0s 0 2 1.48980 0 23 46.00000 1.48980 96.8% - 0s * 21 19 13 43.0000000 6.67033 84.5% 28.0 0s * 22 18 12 42.0000000 6.67033 84.1% 26.8 0s * 1105 147 10 40.0000000 29.40000 26.5% 15.0 0s Cutting planes: Gomory: 1 Mod-K: 5 Explored 1681 nodes (23885 simplex iterations) in 0.54 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+01, best bound 4.000000000000e+01, gap 0.0%