Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:04:13 2012 Optimize a model with 353 rows, 233 columns and 1113 nonzeros Presolve time: 0.00s Presolved: 353 rows, 233 columns, 1113 nonzeros Variable types: 0 continuous, 233 integer (233 binary) Found heuristic solution: objective 86.0000000 Root relaxation: objective 0.000000e+00, 101 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 57 86.00000 0.00000 100% - 0s H 0 0 78.0000000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s 0 0 1.27171 0 60 76.00000 1.27171 98.3% - 0s 0 0 1.27400 0 61 76.00000 1.27400 98.3% - 0s 0 0 1.28085 0 65 76.00000 1.28085 98.3% - 0s 0 0 1.29268 0 60 76.00000 1.29268 98.3% - 0s 0 0 1.35307 0 60 76.00000 1.35307 98.2% - 0s 0 0 1.36300 0 64 76.00000 1.36300 98.2% - 0s 0 2 1.36538 0 64 76.00000 1.36538 98.2% - 0s * 46 45 26 59.0000000 5.09135 91.4% 27.4 0s * 50 44 28 58.0000000 5.09135 91.2% 25.5 0s * 91 70 24 53.0000000 5.10667 90.4% 27.1 0s * 136 94 24 52.0000000 8.22500 84.2% 24.9 0s * 458 244 26 50.0000000 11.96875 76.1% 22.0 0s * 712 343 32 48.0000000 17.41875 63.7% 23.2 0s * 1974 375 34 47.0000000 29.85714 36.5% 20.4 1s * 2930 451 31 46.0000000 32.87805 28.5% 19.4 2s * 3670 443 32 45.0000000 34.04762 24.3% 18.9 3s Cutting planes: Gomory: 1 Zero half: 1 Mod-K: 3 Explored 6145 nodes (109133 simplex iterations) in 4.77 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.500000000000e+01, best bound 4.500000000000e+01, gap 0.0%