Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:32:55 2014 Optimize a model with 3025 rows, 2971 columns and 11718 nonzeros Presolve time: 0.07s Presolved: 3025 rows, 2971 columns, 11718 nonzeros Variable types: 1 continuous, 2970 integer (2970 binary) Found heuristic solution: objective 0.8774495 Found heuristic solution: objective 0.8344054 Found heuristic solution: objective 0.6811937 Root relaxation: objective 1.622179e-01, 1736 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.16222 0 351 0.68119 0.16222 76.2% - 0s H 0 0 0.6216804 0.16222 73.9% - 0s H 0 0 0.2463902 0.16222 34.2% - 0s 0 0 0.20209 0 137 0.24639 0.20209 18.0% - 0s H 0 0 0.2299557 0.20209 12.1% - 0s 0 0 cutoff 0 0.22996 0.22996 0.00% - 0s Explored 0 nodes (5226 simplex iterations) in 0.41 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.299556567652e-01, best bound 2.299556567652e-01, gap 0.0%