Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:29:48 2014 Optimize a model with 2025 rows, 1981 columns and 7788 nonzeros Presolve time: 0.04s Presolved: 2025 rows, 1981 columns, 7788 nonzeros Variable types: 1 continuous, 1980 integer (1980 binary) Found heuristic solution: objective 1.0609310 Found heuristic solution: objective 0.9783071 Found heuristic solution: objective 0.7844198 Root relaxation: objective 1.821932e-01, 1060 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.18219 0 362 0.78442 0.18219 76.8% - 0s H 0 0 0.3906709 0.18219 53.4% - 0s 0 0 0.19426 0 302 0.39067 0.19426 50.3% - 0s 0 0 0.19426 0 360 0.39067 0.19426 50.3% - 0s H 0 0 0.3681861 0.19426 47.2% - 0s 0 0 0.19465 0 286 0.36819 0.19465 47.1% - 0s H 0 0 0.3560577 0.19465 45.3% - 0s H 0 0 0.3380920 0.19465 42.4% - 0s 0 0 0.19808 0 277 0.33809 0.19808 41.4% - 0s 0 0 0.20004 0 254 0.33809 0.20004 40.8% - 0s 0 0 0.20084 0 264 0.33809 0.20084 40.6% - 0s H 0 0 0.3049134 0.20084 34.1% - 0s 0 0 0.20825 0 187 0.30491 0.20825 31.7% - 0s H 0 0 0.3005603 0.20825 30.7% - 0s 0 1 0.20968 0 187 0.30056 0.20968 30.2% - 0s H 1 1 0.2823663 0.20968 25.7% 270 0s Explored 5 nodes (6529 simplex iterations) in 0.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.823662685696e-01, best bound 2.823662685696e-01, gap 0.0%