Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:28:35 2014 Optimize a model with 1521 rows, 1483 columns and 5814 nonzeros Presolve time: 0.03s Presolved: 1521 rows, 1483 columns, 5814 nonzeros Variable types: 1 continuous, 1482 integer (1482 binary) Found heuristic solution: objective 0.9435227 Found heuristic solution: objective 0.9263554 Found heuristic solution: objective 0.8467182 Root relaxation: objective 2.084765e-01, 888 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.20848 0 318 0.84672 0.20848 75.4% - 0s H 0 0 0.4760016 0.20848 56.2% - 0s 0 0 0.21395 0 272 0.47600 0.21395 55.1% - 0s 0 0 0.21395 0 350 0.47600 0.21395 55.1% - 0s H 0 0 0.4520852 0.21395 52.7% - 0s H 0 0 0.4493223 0.21395 52.4% - 0s 0 0 0.21609 0 277 0.44932 0.21609 51.9% - 0s H 0 0 0.4428051 0.21609 51.2% - 0s 0 0 0.22193 0 276 0.44281 0.22193 49.9% - 0s H 0 0 0.3437038 0.22193 35.4% - 0s H 0 0 0.3432520 0.22193 35.3% - 0s 0 0 0.30262 0 52 0.34325 0.30262 11.8% - 0s H 0 0 0.3378499 0.30262 10.4% - 0s H 0 0 0.3266734 0.30262 7.36% - 0s 0 1 0.30262 0 52 0.32667 0.30262 7.36% - 0s * 3 2 15 0.3255080 0.32551 0.00% 119 0s Explored 3 nodes (6188 simplex iterations) in 0.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.255080477344e-01, best bound 3.255080477344e-01, gap 0.0%