Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:45:17 2012 Optimize a model with 235 rows, 163 columns and 748 nonzeros Presolve time: 0.00s Presolved: 235 rows, 163 columns, 748 nonzeros Variable types: 0 continuous, 163 integer (163 binary) Found heuristic solution: objective 51.0000000 Root relaxation: objective 0.000000e+00, 73 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 51.00000 0.00000 100% - 0s H 0 0 44.0000000 0.00000 100% - 0s H 0 0 43.0000000 0.00000 100% - 0s H 0 0 41.0000000 0.00000 100% - 0s 0 0 0.78947 0 48 41.00000 0.78947 98.1% - 0s H 0 0 37.0000000 0.78947 97.9% - 0s 0 0 0.86842 0 48 37.00000 0.86842 97.7% - 0s 0 0 0.91228 0 48 37.00000 0.91228 97.5% - 0s 0 0 0.94737 0 48 37.00000 0.94737 97.4% - 0s 0 0 0.96241 0 51 37.00000 0.96241 97.4% - 0s 0 0 0.97368 0 48 37.00000 0.97368 97.4% - 0s 0 0 1.02632 0 48 37.00000 1.02632 97.2% - 0s 0 0 1.02632 0 48 37.00000 1.02632 97.2% - 0s 0 0 1.02632 0 48 37.00000 1.02632 97.2% - 0s 0 2 1.02632 0 48 37.00000 1.02632 97.2% - 0s H 27 27 34.0000000 3.88681 88.6% 34.6 0s * 51 42 12 32.0000000 3.94282 87.7% 28.6 0s * 154 102 10 30.0000000 10.41935 65.3% 24.3 0s * 192 114 13 29.0000000 10.54432 63.6% 22.8 0s H 808 123 28.0000000 20.37143 27.2% 19.9 0s * 1021 64 10 27.0000000 22.40909 17.0% 19.4 0s Cutting planes: Gomory: 1 Zero half: 6 Explored 1117 nodes (21041 simplex iterations) in 0.58 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0%