Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:20:52 2012 Optimize a model with 221 rows, 176 columns and 726 nonzeros Presolve time: 0.00s Presolved: 221 rows, 176 columns, 726 nonzeros Variable types: 0 continuous, 176 integer (176 binary) Found heuristic solution: objective 44.0000000 Root relaxation: objective 0.000000e+00, 94 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 66 44.00000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s 0 0 0.51562 0 67 31.00000 0.51562 98.3% - 0s 0 0 1.16278 0 70 31.00000 1.16278 96.2% - 0s H 0 0 27.0000000 1.16278 95.7% - 0s 0 0 1.22158 0 71 27.00000 1.22158 95.5% - 0s H 0 0 26.0000000 1.22158 95.3% - 0s H 0 0 25.0000000 1.22158 95.1% - 0s 0 0 1.22224 0 72 25.00000 1.22224 95.1% - 0s 0 2 1.23069 0 72 25.00000 1.23069 95.1% - 0s * 18 18 12 20.0000000 3.06161 84.7% 35.7 0s * 40 26 14 19.0000000 3.33322 82.5% 24.8 0s * 42 23 16 18.0000000 3.33322 81.5% 24.4 0s * 83 31 13 17.0000000 4.88643 71.3% 21.4 0s * 119 34 10 16.0000000 8.07547 49.5% 21.7 0s Cutting planes: Gomory: 3 Zero half: 3 Explored 246 nodes (5181 simplex iterations) in 0.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%