Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:07:27 2012 Optimize a model with 343 rows, 198 columns and 1053 nonzeros Presolve time: 0.00s Presolved: 343 rows, 198 columns, 1053 nonzeros Variable types: 0 continuous, 198 integer (198 binary) Found heuristic solution: objective 85.0000000 Root relaxation: objective 0.000000e+00, 55 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 27 85.00000 0.00000 100% - 0s 0 0 0.84848 0 29 85.00000 0.84848 99.0% - 0s 0 0 0.84848 0 29 85.00000 0.84848 99.0% - 0s 0 0 0.84848 0 29 85.00000 0.84848 99.0% - 0s 0 0 0.84848 0 29 85.00000 0.84848 99.0% - 0s 0 2 1.09917 0 29 85.00000 1.09917 98.7% - 0s * 37 26 19 84.0000000 5.98864 92.9% 29.4 0s * 242 156 18 79.0000000 18.87603 76.1% 29.7 0s * 251 153 18 78.0000000 18.87603 75.8% 29.1 0s * 253 153 19 77.0000000 18.87603 75.5% 28.9 0s * 258 137 15 73.0000000 18.87603 74.1% 28.5 0s * 423 214 17 72.0000000 24.00000 66.7% 28.4 0s * 842 311 29 71.0000000 28.72727 59.5% 27.5 0s H 1077 294 68.0000000 36.00000 47.1% 26.7 0s * 1217 266 27 67.0000000 37.56250 43.9% 26.5 1s * 7314 167 28 66.0000000 58.87500 10.8% 20.2 4s Cutting planes: Gomory: 1 Zero half: 2 Explored 7688 nodes (153836 simplex iterations) in 4.97 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.600000000000e+01, best bound 6.600000000000e+01, gap 0.0%