Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:55 2012 Optimize a model with 81 rows, 73 columns and 273 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 81 rows, 72 columns, 272 nonzeros Variable types: 0 continuous, 72 integer (71 binary) Found heuristic solution: objective 15.0000000 Root relaxation: objective 0.000000e+00, 43 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 31 15.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.56452 0 32 7.00000 0.56452 91.9% - 0s 0 0 1.00000 0 34 7.00000 1.00000 85.7% - 0s 0 0 1.00000 0 31 7.00000 1.00000 85.7% - 0s 0 2 1.00000 0 31 7.00000 1.00000 85.7% - 0s * 17 12 10 5.0000000 1.39477 72.1% 17.4 0s Cutting planes: Gomory: 3 Zero half: 8 Explored 62 nodes (1093 simplex iterations) in 0.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%