Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:40:02 2012 Optimize a model with 161 rows, 119 columns and 519 nonzeros Presolve time: 0.00s Presolved: 161 rows, 119 columns, 519 nonzeros Variable types: 0 continuous, 119 integer (119 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 0.000000e+00, 62 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 39 40.00000 0.00000 100% - 0s H 0 0 32.0000000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s 0 0 0.70881 0 41 31.00000 0.70881 97.7% - 0s H 0 0 29.0000000 0.70881 97.6% - 0s 0 0 0.81226 0 43 29.00000 0.81226 97.2% - 0s 0 0 0.92049 0 48 29.00000 0.92049 96.8% - 0s H 0 0 22.0000000 0.92049 95.8% - 0s 0 0 0.93548 0 50 22.00000 0.93548 95.7% - 0s H 0 0 20.0000000 0.93548 95.3% - 0s 0 0 0.98104 0 59 20.00000 0.98104 95.1% - 0s 0 0 1.00179 0 50 20.00000 1.00179 95.0% - 0s 0 0 1.00303 0 60 20.00000 1.00303 95.0% - 0s 0 2 1.01070 0 59 20.00000 1.01070 94.9% - 0s * 20 18 12 19.0000000 4.40000 76.8% 25.4 0s * 60 36 10 18.0000000 7.25000 59.7% 17.6 0s * 86 43 14 17.0000000 7.30769 57.0% 17.1 0s * 198 45 8 16.0000000 10.60000 33.8% 14.5 0s Cutting planes: Gomory: 1 Zero half: 4 Mod-K: 2 Explored 338 nodes (4745 simplex iterations) in 0.11 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%