Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:28:07 2014 Optimize a model with 1296 rows, 1261 columns and 4935 nonzeros Presolve time: 0.02s Presolved: 1296 rows, 1261 columns, 4935 nonzeros Variable types: 1 continuous, 1260 integer (1260 binary) Found heuristic solution: objective 0.9896860 Found heuristic solution: objective 0.9876609 Found heuristic solution: objective 0.7534735 Root relaxation: objective 2.061478e-01, 701 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.20615 0 248 0.75347 0.20615 72.6% - 0s H 0 0 0.4782467 0.20615 56.9% - 0s 0 0 0.20810 0 245 0.47825 0.20810 56.5% - 0s 0 0 0.20810 0 251 0.47825 0.20810 56.5% - 0s H 0 0 0.3112567 0.20810 33.1% - 0s 0 0 0.26730 0 64 0.31126 0.26730 14.1% - 0s 0 1 0.26730 0 64 0.31126 0.26730 14.1% - 0s H 1 1 0.3035627 0.26730 11.9% 270 0s Explored 1 nodes (4308 simplex iterations) in 0.28 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.035627151847e-01, best bound 3.035627151847e-01, gap 0.0%