Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:44:09 2014 Optimize a model with 5184 rows, 5113 columns and 20235 nonzeros Presolve time: 0.13s Presolved: 5184 rows, 5113 columns, 20235 nonzeros Variable types: 1 continuous, 5112 integer (5112 binary) Found heuristic solution: objective 1.0273668 Found heuristic solution: objective 0.9859921 Found heuristic solution: objective 0.9741417 Root relaxation: objective 1.396905e-01, 2521 iterations, 0.16 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.13969 0 559 0.97414 0.13969 85.7% - 0s H 0 0 0.6800636 0.13969 79.5% - 0s H 0 0 0.2691144 0.13969 48.1% - 0s 0 0 0.14333 0 544 0.26911 0.14333 46.7% - 0s 0 0 0.14333 0 540 0.26911 0.14333 46.7% - 0s 0 0 0.14336 0 553 0.26911 0.14336 46.7% - 0s H 0 0 0.2682412 0.14336 46.6% - 0s H 0 0 0.2482832 0.14336 42.3% - 0s 0 0 0.15139 0 458 0.24828 0.15139 39.0% - 1s H 0 0 0.2425725 0.15139 37.6% - 1s H 0 0 0.2407612 0.15139 37.1% - 1s 0 0 0.18997 0 262 0.24076 0.18997 21.1% - 1s H 0 0 0.2271637 0.18997 16.4% - 1s H 0 0 0.2216611 0.18997 14.3% - 1s 0 0 0.19696 0 150 0.22166 0.19696 11.1% - 1s H 0 0 0.2127956 0.19696 7.44% - 1s 0 1 0.19696 0 148 0.21280 0.19696 7.44% - 1s Explored 3 nodes (9318 simplex iterations) in 1.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.127955752131e-01, best bound 2.127955752131e-01, gap 0.0%