Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:21:18 2012 Optimize a model with 255 rows, 194 columns and 829 nonzeros Presolve time: 0.00s Presolved: 255 rows, 194 columns, 829 nonzeros Variable types: 0 continuous, 194 integer (194 binary) Found heuristic solution: objective 52.0000000 Root relaxation: objective 0.000000e+00, 104 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 67 52.00000 0.00000 100% - 0s H 0 0 51.0000000 0.00000 100% - 0s H 0 0 45.0000000 0.00000 100% - 0s 0 0 0.68190 0 69 45.00000 0.68190 98.5% - 0s H 0 0 42.0000000 0.68190 98.4% - 0s 0 0 0.68379 0 69 42.00000 0.68379 98.4% - 0s 0 0 0.68379 0 69 42.00000 0.68379 98.4% - 0s H 0 0 39.0000000 0.68379 98.2% - 0s 0 2 0.68750 0 69 39.00000 0.68750 98.2% - 0s * 28 27 18 24.0000000 4.51172 81.2% 27.6 0s * 206 80 10 23.0000000 9.71670 57.8% 19.3 0s H 472 97 22.0000000 13.12444 40.3% 18.7 0s Cutting planes: Gomory: 1 Zero half: 6 Explored 1306 nodes (21815 simplex iterations) in 0.69 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%