Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:41:17 2012 Optimize a model with 189 rows, 136 columns and 606 nonzeros Presolve time: 0.00s Presolved: 189 rows, 136 columns, 606 nonzeros Variable types: 0 continuous, 136 integer (136 binary) Found heuristic solution: objective 46.0000000 Root relaxation: objective 0.000000e+00, 65 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 42 46.00000 0.00000 100% - 0s H 0 0 43.0000000 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 0.66667 0 44 37.00000 0.66667 98.2% - 0s 0 0 0.88889 0 45 37.00000 0.88889 97.6% - 0s H 0 0 36.0000000 0.88889 97.5% - 0s H 0 0 34.0000000 0.88889 97.4% - 0s 0 0 0.91667 0 44 34.00000 0.91667 97.3% - 0s 0 0 0.97222 0 44 34.00000 0.97222 97.1% - 0s 0 0 0.97222 0 44 34.00000 0.97222 97.1% - 0s 0 0 0.97222 0 44 34.00000 0.97222 97.1% - 0s H 0 0 33.0000000 0.97222 97.1% - 0s 0 2 0.98433 0 44 33.00000 0.98433 97.0% - 0s * 26 25 17 26.0000000 3.33333 87.2% 21.7 0s * 49 29 14 25.0000000 3.50000 86.0% 19.8 0s * 67 37 13 23.0000000 7.12500 69.0% 20.9 0s * 156 53 9 22.0000000 11.30000 48.6% 17.5 0s * 418 30 13 21.0000000 16.46154 21.6% 15.4 0s Cutting planes: Gomory: 1 Zero half: 4 Explored 471 nodes (7467 simplex iterations) in 0.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%