Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:40:02 2012 Optimize a model with 161 rows, 119 columns and 519 nonzeros Presolve time: 0.00s Presolved: 161 rows, 119 columns, 519 nonzeros Variable types: 0 continuous, 119 integer (119 binary) Found heuristic solution: objective 39.0000000 Root relaxation: objective 0.000000e+00, 69 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 38 39.00000 0.00000 100% - 0s H 0 0 37.0000000 0.00000 100% - 0s 0 0 0.50000 0 39 37.00000 0.50000 98.6% - 0s H 0 0 32.0000000 0.50000 98.4% - 0s 0 0 0.50000 0 39 32.00000 0.50000 98.4% - 0s 0 0 0.52632 0 39 32.00000 0.52632 98.4% - 0s H 0 0 29.0000000 0.52632 98.2% - 0s 0 0 0.52632 0 40 29.00000 0.52632 98.2% - 0s 0 0 0.52675 0 42 29.00000 0.52675 98.2% - 0s 0 0 0.52675 0 42 29.00000 0.52675 98.2% - 0s H 0 0 28.0000000 0.52675 98.1% - 0s H 0 0 22.0000000 0.52675 97.6% - 0s 0 2 0.55451 0 42 22.00000 0.55451 97.5% - 0s * 18 18 11 20.0000000 4.08889 79.6% 23.6 0s * 42 29 13 18.0000000 4.19167 76.7% 20.5 0s * 60 34 13 17.0000000 6.96000 59.1% 19.2 0s * 138 48 9 16.0000000 9.03140 43.6% 18.8 0s * 139 39 8 15.0000000 9.03140 39.8% 18.8 0s Cutting planes: Gomory: 1 Zero half: 1 Mod-K: 2 Explored 239 nodes (4294 simplex iterations) in 0.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%