Gurobi 5.6.3 (linux64) logging started Tue Oct 7 22:43:01 2014 Optimize a model with 16257 rows, 16256 columns and 48514 nonzeros Presolve time: 0.35s Presolved: 16257 rows, 16256 columns, 48514 nonzeros Variable types: 0 continuous, 16256 integer (16256 binary) Found heuristic solution: objective 15.6843497 Root relaxation: objective 1.185968e+01, 1622 iterations, 0.12 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 11.8596824 11.85968 0.00% - 0s Explored 0 nodes (1622 simplex iterations) in 0.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.185968241308e+01, best bound 1.185968241308e+01, gap 0.0%