Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:54:33 2012 Optimize a model with 217 rows, 130 columns and 670 nonzeros Presolve time: 0.00s Presolved: 217 rows, 130 columns, 670 nonzeros Variable types: 0 continuous, 130 integer (130 binary) Found heuristic solution: objective 54.0000000 Root relaxation: objective 0.000000e+00, 53 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 22 54.00000 0.00000 100% - 0s H 0 0 53.0000000 0.00000 100% - 0s H 0 0 48.0000000 0.00000 100% - 0s 0 0 1.00000 0 24 48.00000 1.00000 97.9% - 0s 0 0 1.12500 0 24 48.00000 1.12500 97.7% - 0s 0 0 1.12500 0 24 48.00000 1.12500 97.7% - 0s 0 0 1.12500 0 24 48.00000 1.12500 97.7% - 0s 0 0 1.12500 0 24 48.00000 1.12500 97.7% - 0s 0 2 1.38690 0 24 48.00000 1.38690 97.1% - 0s * 30 20 14 47.0000000 6.07692 87.1% 22.6 0s * 51 32 13 44.0000000 6.10714 86.1% 21.7 0s * 95 54 11 43.0000000 10.18421 76.3% 24.3 0s * 182 71 13 41.0000000 15.12500 63.1% 22.6 0s Cutting planes: Gomory: 1 Zero half: 4 Explored 1130 nodes (20371 simplex iterations) in 0.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.100000000000e+01, best bound 4.100000000000e+01, gap 0.0%