Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:42:09 2012 Optimize a model with 195 rows, 140 columns and 625 nonzeros Presolve time: 0.00s Presolved: 195 rows, 140 columns, 625 nonzeros Variable types: 0 continuous, 140 integer (140 binary) Found heuristic solution: objective 51.0000000 Root relaxation: objective 0.000000e+00, 77 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 51.00000 0.00000 100% - 0s H 0 0 44.0000000 0.00000 100% - 0s H 0 0 41.0000000 0.00000 100% - 0s 0 0 0.72674 0 48 41.00000 0.72674 98.2% - 0s H 0 0 36.0000000 0.72674 98.0% - 0s 0 0 0.80945 0 49 36.00000 0.80945 97.8% - 0s 0 0 0.85959 0 49 36.00000 0.85959 97.6% - 0s H 0 0 30.0000000 0.85959 97.1% - 0s 0 0 0.87697 0 48 30.00000 0.87697 97.1% - 0s 0 0 0.91134 0 45 30.00000 0.91134 97.0% - 0s H 0 0 27.0000000 0.91134 96.6% - 0s 0 0 0.91134 0 45 27.00000 0.91134 96.6% - 0s 0 0 0.91134 0 45 27.00000 0.91134 96.6% - 0s H 0 0 25.0000000 0.91134 96.4% - 0s 0 2 0.98828 0 45 25.00000 0.98828 96.0% - 0s * 21 18 14 23.0000000 4.86047 78.9% 26.7 0s * 35 20 8 20.0000000 4.93585 75.3% 23.2 0s Cutting planes: Gomory: 1 Zero half: 9 Explored 189 nodes (3586 simplex iterations) in 0.17 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%