Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:47 2012 Optimize a model with 113 rows, 102 columns and 382 nonzeros Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 113 rows, 100 columns, 380 nonzeros Variable types: 0 continuous, 100 integer (99 binary) Found heuristic solution: objective 20.0000000 Root relaxation: objective 0.000000e+00, 66 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 38 20.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.39474 0 39 8.00000 0.39474 95.1% - 0s 0 0 1.09494 0 41 8.00000 1.09494 86.3% - 0s 0 0 1.27020 0 43 8.00000 1.27020 84.1% - 0s 0 0 1.27325 0 46 8.00000 1.27325 84.1% - 0s 0 0 1.27325 0 45 8.00000 1.27325 84.1% - 0s 0 2 1.27759 0 45 8.00000 1.27759 84.0% - 0s * 15 6 12 7.0000000 2.66667 61.9% 18.3 0s Cutting planes: Gomory: 4 Zero half: 1 Explored 38 nodes (914 simplex iterations) in 0.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%