Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:44:02 2012 Optimize a model with 219 rows, 154 columns and 699 nonzeros Presolve time: 0.00s Presolved: 219 rows, 154 columns, 699 nonzeros Variable types: 0 continuous, 154 integer (154 binary) Found heuristic solution: objective 51.0000000 Root relaxation: objective 0.000000e+00, 78 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 45 51.00000 0.00000 100% - 0s H 0 0 41.0000000 0.00000 100% - 0s 0 0 0.63034 0 55 41.00000 0.63034 98.5% - 0s 0 0 0.65085 0 55 41.00000 0.65085 98.4% - 0s 0 0 0.70182 0 50 41.00000 0.70182 98.3% - 0s 0 0 0.74623 0 52 41.00000 0.74623 98.2% - 0s 0 0 0.89959 0 49 41.00000 0.89959 97.8% - 0s 0 0 0.92336 0 60 41.00000 0.92336 97.7% - 0s 0 0 0.93250 0 61 41.00000 0.93250 97.7% - 0s 0 0 0.93250 0 61 41.00000 0.93250 97.7% - 0s 0 2 0.93521 0 61 41.00000 0.93521 97.7% - 0s * 20 17 13 23.0000000 5.14286 77.6% 26.7 0s * 238 21 10 22.0000000 15.00000 31.8% 19.3 0s Cutting planes: Gomory: 1 Zero half: 2 Mod-K: 3 Explored 287 nodes (5694 simplex iterations) in 0.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%