Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:45:16 2012 Optimize a model with 219 rows, 155 columns and 700 nonzeros Presolve time: 0.00s Presolved: 219 rows, 155 columns, 700 nonzeros Variable types: 0 continuous, 155 integer (155 binary) Found heuristic solution: objective 54.0000000 Root relaxation: objective 0.000000e+00, 72 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 46 54.00000 0.00000 100% - 0s H 0 0 45.0000000 0.00000 100% - 0s H 0 0 44.0000000 0.00000 100% - 0s H 0 0 41.0000000 0.00000 100% - 0s 0 0 0.63043 0 48 41.00000 0.63043 98.5% - 0s H 0 0 38.0000000 0.63043 98.3% - 0s 0 0 0.77019 0 51 38.00000 0.77019 98.0% - 0s 0 0 0.81159 0 48 38.00000 0.81159 97.9% - 0s 0 0 0.84058 0 51 38.00000 0.84058 97.8% - 0s 0 0 0.89855 0 49 38.00000 0.89855 97.6% - 0s 0 0 0.91304 0 48 38.00000 0.91304 97.6% - 0s H 0 0 35.0000000 0.91304 97.4% - 0s 0 0 0.91304 0 48 35.00000 0.91304 97.4% - 0s 0 0 0.91304 0 48 35.00000 0.91304 97.4% - 0s 0 2 1.11529 0 48 35.00000 1.11529 96.8% - 0s * 25 25 15 29.0000000 4.21739 85.5% 25.7 0s * 52 37 18 27.0000000 4.26708 84.2% 20.9 0s * 69 39 9 24.0000000 7.36458 69.3% 21.3 0s * 187 46 9 21.0000000 11.88629 43.4% 18.3 0s * 241 35 10 20.0000000 14.38554 28.1% 17.7 0s Cutting planes: Gomory: 1 Zero half: 6 Explored 302 nodes (5226 simplex iterations) in 0.22 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%