Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:02:58 2013 Optimize a model with 610 rows, 5574 columns and 250451 nonzeros Presolve removed 82 rows and 345 columns Presolve time: 1.66s Presolved: 528 rows, 5229 columns, 235943 nonzeros Variable types: 0 continuous, 5229 integer (5229 binary) Found heuristic solution: objective 3045.0000000 Found heuristic solution: objective 2964.0000000 Root relaxation: objective 2.221000e+03, 676 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 2221.0000000 2221.00000 0.0% - 1s Explored 0 nodes (676 simplex iterations) in 1.77 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.221000000000e+03, best bound 2.221000000000e+03, gap 0.0%