Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:51:17 2014 Optimize a model with 6400 rows, 6321 columns and 25043 nonzeros Presolve time: 0.14s Presolved: 6400 rows, 6321 columns, 25043 nonzeros Variable types: 1 continuous, 6320 integer (6320 binary) Found heuristic solution: objective 1.0024565 Found heuristic solution: objective 0.9730532 Found heuristic solution: objective 0.9453455 Root relaxation: objective 1.456589e-01, 2772 iterations, 0.26 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.14566 0 744 0.94535 0.14566 84.6% - 0s H 0 0 0.3918201 0.14566 62.8% - 0s H 0 0 0.3042526 0.14566 52.1% - 0s 0 0 0.15053 0 606 0.30425 0.15053 50.5% - 0s 0 0 0.15053 0 744 0.30425 0.15053 50.5% - 1s 0 0 0.15260 0 664 0.30425 0.15260 49.8% - 1s 0 0 0.15288 0 643 0.30425 0.15288 49.8% - 1s 0 0 0.15301 0 661 0.30425 0.15301 49.7% - 1s 0 0 0.15301 0 657 0.30425 0.15301 49.7% - 1s 0 0 0.15301 0 625 0.30425 0.15301 49.7% - 1s H 0 0 0.3010879 0.15301 49.2% - 1s H 0 0 0.2528814 0.15301 39.5% - 1s 0 2 0.16156 0 480 0.25288 0.16156 36.1% - 2s H 27 21 0.2446180 0.17134 30.0% 213 2s * 43 10 8 0.2347765 0.18283 22.1% 146 2s * 46 7 3 0.2337806 0.18357 21.5% 139 2s * 51 6 7 0.2335553 0.19707 15.6% 133 2s * 54 5 9 0.2244975 0.19707 12.2% 126 2s Cutting planes: Gomory: 4 MIR: 6 Explored 60 nodes (18759 simplex iterations) in 2.35 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.244974924078e-01, best bound 2.244974924078e-01, gap 0.0%