Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:21:52 2012 Optimize a model with 197 rows, 166 columns and 656 nonzeros Presolve removed 0 rows and 3 columns Presolve time: 0.00s Presolved: 197 rows, 163 columns, 653 nonzeros Variable types: 0 continuous, 163 integer (162 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 0.000000e+00, 101 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 64 41.00000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s 0 0 0.36810 0 66 30.00000 0.36810 98.8% - 0s H 0 0 28.0000000 0.36810 98.7% - 0s 0 0 0.95123 0 68 28.00000 0.95123 96.6% - 0s H 0 0 26.0000000 0.95123 96.3% - 0s 0 0 0.96189 0 69 26.00000 0.96189 96.3% - 0s 0 0 0.96189 0 69 26.00000 0.96189 96.3% - 0s H 0 0 23.0000000 0.96189 95.8% - 0s 0 2 0.97744 0 69 23.00000 0.97744 95.8% - 0s * 20 20 15 16.0000000 2.45334 84.7% 22.2 0s * 38 26 12 15.0000000 2.49815 83.3% 23.8 0s * 54 27 10 14.0000000 4.17590 70.2% 22.6 0s * 95 29 10 12.0000000 6.27934 47.7% 21.0 0s Cutting planes: Gomory: 4 Mod-K: 1 Explored 175 nodes (3924 simplex iterations) in 0.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%