Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:41 2012 Optimize a model with 222 rows, 65 columns and 444 nonzeros Presolve removed 75 rows and 2 columns Presolve time: 0.00s Presolved: 147 rows, 63 columns, 341 nonzeros Variable types: 0 continuous, 63 integer (63 binary) Found heuristic solution: objective 22.0000000 Root relaxation: objective 2.650000e+01, 79 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 26.50000 0 45 22.00000 26.50000 20.5% - 0s 0 0 26.00000 0 42 22.00000 26.00000 18.2% - 0s 0 0 25.50000 0 54 22.00000 25.50000 15.9% - 0s H 0 0 23.0000000 25.50000 10.9% - 0s 0 0 25.00000 0 53 23.00000 25.00000 8.70% - 0s 0 0 25.00000 0 50 23.00000 25.00000 8.70% - 0s 0 0 24.95238 0 58 23.00000 24.95238 8.49% - 0s 0 0 24.81818 0 58 23.00000 24.81818 7.91% - 0s H 0 0 24.0000000 24.81818 3.41% - 0s Cutting planes: Gomory: 1 Zero half: 14 Explored 0 nodes (302 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%