Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:16:51 2013 Optimize a model with 902 rows, 14181 columns and 627518 nonzeros Presolve removed 15 rows and 9 columns (presolve time = 5s) ... Presolve removed 27 rows and 31 columns Presolve time: 7.89s Presolved: 875 rows, 14150 columns, 625036 nonzeros Variable types: 0 continuous, 14150 integer (14150 binary) Found heuristic solution: objective 8258.0000000 Root relaxation: objective 5.365667e+03, 3217 iterations, 0.90 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 5365.66667 0 53 8258.00000 5365.66667 35.0% - 9s H 0 0 5483.0000000 5365.66667 2.14% - 10s * 0 0 0 5383.0000000 5383.00000 0.0% - 10s Cutting planes: Clique: 12 Zero half: 50 Explored 0 nodes (4260 simplex iterations) in 10.60 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.383000000000e+03, best bound 5.383000000000e+03, gap 0.0%