Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:42:08 2012 Optimize a model with 197 rows, 141 columns and 631 nonzeros Presolve time: 0.00s Presolved: 197 rows, 141 columns, 631 nonzeros Variable types: 0 continuous, 141 integer (141 binary) Found heuristic solution: objective 43.0000000 Root relaxation: objective 0.000000e+00, 66 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 43 43.00000 0.00000 100% - 0s H 0 0 41.0000000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s H 0 0 37.0000000 0.00000 100% - 0s 0 0 0.54817 0 45 37.00000 0.54817 98.5% - 0s H 0 0 34.0000000 0.54817 98.4% - 0s 0 0 0.58472 0 45 34.00000 0.58472 98.3% - 0s 0 0 0.69208 0 47 34.00000 0.69208 98.0% - 0s 0 0 0.75018 0 47 34.00000 0.75018 97.8% - 0s H 0 0 26.0000000 0.75018 97.1% - 0s 0 0 0.75637 0 46 26.00000 0.75637 97.1% - 0s 0 0 0.75985 0 51 26.00000 0.75985 97.1% - 0s 0 2 0.80881 0 51 26.00000 0.80881 96.9% - 0s * 24 23 16 23.0000000 3.07738 86.6% 24.3 0s * 154 76 11 22.0000000 8.83230 59.9% 21.5 0s * 407 72 11 21.0000000 14.00000 33.3% 17.7 0s * 452 61 13 20.0000000 14.24242 28.8% 17.4 0s Cutting planes: Gomory: 1 Zero half: 12 Mod-K: 1 Explored 593 nodes (9947 simplex iterations) in 0.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%