Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:26:39 2014 Optimize a model with 400 rows, 381 columns and 1463 nonzeros Presolve time: 0.00s Presolved: 400 rows, 381 columns, 1463 nonzeros Variable types: 1 continuous, 380 integer (380 binary) Found heuristic solution: objective 0.8669759 Found heuristic solution: objective 0.8037543 Found heuristic solution: objective 0.7717482 Root relaxation: objective 3.151770e-01, 333 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.31518 0 142 0.77175 0.31518 59.2% - 0s H 0 0 0.6343953 0.31518 50.3% - 0s 0 0 0.32549 0 89 0.63440 0.32549 48.7% - 0s 0 0 0.32549 0 107 0.63440 0.32549 48.7% - 0s H 0 0 0.5607232 0.32549 42.0% - 0s 0 0 0.40151 0 59 0.56072 0.40151 28.4% - 0s H 0 0 0.4934869 0.40151 18.6% - 0s 0 0 0.40364 0 44 0.49349 0.40364 18.2% - 0s 0 0 0.40364 0 44 0.49349 0.40364 18.2% - 0s H 0 0 0.4712548 0.40364 14.3% - 0s 0 0 cutoff 0 0.47125 0.47125 0.00% - 0s Explored 1 nodes (1910 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.712547855773e-01, best bound 4.712547855773e-01, gap 0.0%