Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:48:23 2012 Optimize a model with 307 rows, 235 columns and 1000 nonzeros Presolve time: 0.00s Presolved: 307 rows, 235 columns, 1000 nonzeros Variable types: 0 continuous, 235 integer (235 binary) Found heuristic solution: objective 69.0000000 Root relaxation: objective 0.000000e+00, 120 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 81 69.00000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s H 0 0 51.0000000 0.00000 100% - 0s H 0 0 46.0000000 0.00000 100% - 0s 0 0 0.54870 0 82 46.00000 0.54870 98.8% - 0s H 0 0 43.0000000 0.54870 98.7% - 0s 0 0 1.00000 0 84 43.00000 1.00000 97.7% - 0s H 0 0 41.0000000 1.00000 97.6% - 0s 0 0 1.02468 0 87 41.00000 1.02468 97.5% - 0s 0 0 1.06719 0 86 41.00000 1.06719 97.4% - 0s H 0 0 39.0000000 1.06719 97.3% - 0s H 0 0 34.0000000 1.06719 96.9% - 0s 0 0 1.08947 0 87 34.00000 1.08947 96.8% - 0s 0 0 1.12722 0 86 34.00000 1.12722 96.7% - 0s 0 0 1.12979 0 88 34.00000 1.12979 96.7% - 0s 0 0 1.12979 0 88 34.00000 1.12979 96.7% - 0s 0 2 1.13905 0 88 34.00000 1.13905 96.6% - 0s * 42 34 25 33.0000000 4.33625 86.9% 21.6 0s * 78 60 27 32.0000000 4.34375 86.4% 19.4 0s H 108 81 31.0000000 6.96766 77.5% 19.6 0s * 146 103 20 29.0000000 7.05659 75.7% 20.5 0s H 217 140 27.0000000 7.66455 71.6% 22.5 0s * 235 123 14 25.0000000 9.07886 63.7% 22.2 0s * 244 118 16 24.0000000 9.07886 62.2% 21.9 0s * 247 102 17 23.0000000 9.07886 60.5% 21.7 0s Cutting planes: Gomory: 3 Mod-K: 4 Explored 1603 nodes (29176 simplex iterations) in 1.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%