Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:48 2012 Optimize a model with 119 rows, 105 columns and 400 nonzeros Presolve time: 0.00s Presolved: 119 rows, 105 columns, 400 nonzeros Variable types: 0 continuous, 105 integer (105 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 0.000000e+00, 79 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 28.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.54762 0 47 13.00000 0.54762 95.8% - 0s 0 0 1.20577 0 49 13.00000 1.20577 90.7% - 0s H 0 0 12.0000000 1.20577 90.0% - 0s 0 0 1.49168 0 53 12.00000 1.49168 87.6% - 0s 0 0 1.49791 0 57 12.00000 1.49791 87.5% - 0s 0 2 1.50247 0 57 12.00000 1.50247 87.5% - 0s * 9 7 8 7.0000000 2.20262 68.5% 20.8 0s * 20 7 5 6.0000000 2.22086 63.0% 21.7 0s Cutting planes: Gomory: 4 Zero half: 3 Explored 39 nodes (1121 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%