Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:27:14 2012 Optimize a model with 357 rows, 238 columns and 1128 nonzeros Presolve time: 0.00s Presolved: 357 rows, 238 columns, 1128 nonzeros Variable types: 0 continuous, 238 integer (238 binary) Found heuristic solution: objective 83.0000000 Root relaxation: objective 0.000000e+00, 92 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 60 83.00000 0.00000 100% - 0s H 0 0 72.0000000 0.00000 100% - 0s 0 0 0.57692 0 61 72.00000 0.57692 99.2% - 0s H 0 0 63.0000000 0.57692 99.1% - 0s 0 0 1.21283 0 63 63.00000 1.21283 98.1% - 0s 0 0 1.35784 0 63 63.00000 1.35784 97.8% - 0s 0 0 1.35784 0 63 63.00000 1.35784 97.8% - 0s H 0 0 60.0000000 1.35784 97.7% - 0s 0 2 1.37304 0 63 60.00000 1.37304 97.7% - 0s * 41 39 24 51.0000000 1.56086 96.9% 32.1 0s H 81 67 47.0000000 1.71885 96.3% 33.0 0s * 86 64 24 46.0000000 1.71885 96.3% 31.5 0s * 1242 462 31 45.0000000 19.11321 57.5% 28.8 1s * 3904 817 32 43.0000000 28.04167 34.8% 24.3 3s H 4151 775 42.0000000 28.34694 32.5% 24.1 4s 5250 732 cutoff 25 42.00000 30.66667 27.0% 23.6 5s Cutting planes: Gomory: 3 Explored 8844 nodes (197869 simplex iterations) in 7.56 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.200000000000e+01, best bound 4.200000000000e+01, gap 0.0%