Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:41:41 2012 Optimize a model with 285 rows, 222 columns and 932 nonzeros Presolve time: 0.00s Presolved: 285 rows, 222 columns, 932 nonzeros Variable types: 0 continuous, 222 integer (222 binary) Found heuristic solution: objective 56.0000000 Root relaxation: objective 0.000000e+00, 129 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 79 56.00000 0.00000 100% - 0s H 0 0 49.0000000 0.00000 100% - 0s H 0 0 47.0000000 0.00000 100% - 0s 0 0 0.60166 0 80 47.00000 0.60166 98.7% - 0s H 0 0 43.0000000 0.60166 98.6% - 0s 0 0 1.00000 0 81 43.00000 1.00000 97.7% - 0s 0 0 1.25357 0 82 43.00000 1.25357 97.1% - 0s 0 0 1.25932 0 84 43.00000 1.25932 97.1% - 0s 0 0 1.25932 0 84 43.00000 1.25932 97.1% - 0s H 0 0 42.0000000 1.25932 97.0% - 0s H 0 0 34.0000000 1.25932 96.3% - 0s 0 2 1.27126 0 84 34.00000 1.27126 96.3% - 0s H 27 27 25.0000000 3.56932 85.7% 31.6 0s H 54 39 24.0000000 3.57108 85.1% 29.9 0s * 76 54 15 23.0000000 5.18827 77.4% 29.6 0s * 101 58 14 22.0000000 5.25814 76.1% 28.4 0s * 198 65 12 20.0000000 7.73504 61.3% 23.7 0s Cutting planes: Gomory: 5 Zero half: 3 Explored 684 nodes (14200 simplex iterations) in 0.59 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%