Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:31:19 2014 Optimize a model with 2451 rows, 2450 columns and 7252 nonzeros Presolve time: 0.04s Presolved: 2451 rows, 2450 columns, 7252 nonzeros Variable types: 0 continuous, 2450 integer (2450 binary) Found heuristic solution: objective 11.7527098 Root relaxation: objective 6.989479e+00, 621 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 6.9894794 6.98948 0.00% - 0s Explored 0 nodes (621 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.989479393849e+00, best bound 6.989479393849e+00, gap 0.0%