Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:47:16 2012 Optimize a model with 187 rows, 140 columns and 605 nonzeros Presolve time: 0.00s Presolved: 187 rows, 140 columns, 605 nonzeros Variable types: 0 continuous, 140 integer (140 binary) Found heuristic solution: objective 42.0000000 Found heuristic solution: objective 34.0000000 Root relaxation: objective 0.000000e+00, 89 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 47 34.00000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s 0 0 0.44813 0 49 29.00000 0.44813 98.5% - 0s H 0 0 27.0000000 0.44813 98.3% - 0s 0 0 0.57922 0 51 27.00000 0.57922 97.9% - 0s 0 0 0.63158 0 51 27.00000 0.63158 97.7% - 0s 0 0 0.65600 0 52 27.00000 0.65600 97.6% - 0s 0 0 0.67013 0 53 27.00000 0.67013 97.5% - 0s 0 0 0.69738 0 53 27.00000 0.69738 97.4% - 0s 0 0 0.70156 0 56 27.00000 0.70156 97.4% - 0s 0 2 0.71239 0 56 27.00000 0.71239 97.4% - 0s * 22 22 13 22.0000000 4.47423 79.7% 19.0 0s * 28 18 13 21.0000000 4.47423 78.7% 15.4 0s * 43 28 10 20.0000000 4.52381 77.4% 16.0 0s * 48 26 10 19.0000000 4.52381 76.2% 15.6 0s * 187 45 10 18.0000000 9.39130 47.8% 14.2 0s Cutting planes: Gomory: 1 Zero half: 6 Explored 558 nodes (7164 simplex iterations) in 0.18 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%