Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:27:05 2014 Optimize a model with 729 rows, 703 columns and 2730 nonzeros Presolve time: 0.01s Presolved: 729 rows, 703 columns, 2730 nonzeros Variable types: 1 continuous, 702 integer (702 binary) Found heuristic solution: objective 0.6911156 Found heuristic solution: objective 0.6849279 Found heuristic solution: objective 0.5579807 Root relaxation: objective 2.511064e-01, 520 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.25111 0 230 0.55798 0.25111 55.0% - 0s H 0 0 0.4787120 0.25111 47.5% - 0s 0 0 0.25917 0 171 0.47871 0.25917 45.9% - 0s 0 0 0.25917 0 182 0.47871 0.25917 45.9% - 0s H 0 0 0.4712016 0.25917 45.0% - 0s 0 0 0.26515 0 160 0.47120 0.26515 43.7% - 0s 0 0 0.26661 0 147 0.47120 0.26661 43.4% - 0s H 0 0 0.4527262 0.26661 41.1% - 0s 0 0 0.26990 0 132 0.45273 0.26990 40.4% - 0s H 0 0 0.4267123 0.26990 36.7% - 0s 0 0 0.29839 0 97 0.42671 0.29839 30.1% - 0s H 0 0 0.4107341 0.29839 27.4% - 0s 0 0 cutoff 0 0.41073 0.41073 0.00% - 0s Cutting planes: MIR: 2 Zero half: 1 Explored 0 nodes (2429 simplex iterations) in 0.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.107340504571e-01, best bound 4.107340504571e-01, gap 0.0%