Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:34:40 2014 Optimize a model with 3423 rows, 3422 columns and 10150 nonzeros Presolve time: 0.07s Presolved: 3423 rows, 3422 columns, 10150 nonzeros Variable types: 0 continuous, 3422 integer (3422 binary) Found heuristic solution: objective 14.8507949 Root relaxation: objective 7.620435e+00, 628 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 7.6204345 7.62043 0.00% - 0s Explored 0 nodes (628 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.620434549138e+00, best bound 7.620434549138e+00, gap 0.0%