Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:49 2012 Optimize a model with 141 rows, 122 columns and 472 nonzeros Presolve time: 0.00s Presolved: 141 rows, 122 columns, 472 nonzeros Variable types: 0 continuous, 122 integer (122 binary) Found heuristic solution: objective 32.0000000 Found heuristic solution: objective 31.0000000 Root relaxation: objective 0.000000e+00, 86 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 52 31.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.75188 0 56 17.00000 0.75188 95.6% - 0s 0 0 0.83227 0 54 17.00000 0.83227 95.1% - 0s H 0 0 16.0000000 0.83227 94.8% - 0s 0 0 0.84091 0 54 16.00000 0.84091 94.7% - 0s H 0 0 14.0000000 0.84091 94.0% - 0s 0 2 0.87338 0 54 14.00000 0.87338 93.8% - 0s * 29 24 21 11.0000000 2.26024 79.5% 14.8 0s * 45 23 12 10.0000000 2.32468 76.8% 15.4 0s * 58 21 8 9.0000000 3.52273 60.9% 16.4 0s * 86 19 9 8.0000000 4.86364 39.2% 16.5 0s Cutting planes: Gomory: 1 Mod-K: 7 Explored 123 nodes (2197 simplex iterations) in 0.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%