Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:30:44 2013 Optimize a model with 2324 rows, 576 columns and 7200 nonzeros Presolve removed 477 rows and 296 columns Presolve time: 0.02s Presolved: 1847 rows, 280 columns, 5813 nonzeros Variable types: 13 continuous, 267 integer (267 binary) Found heuristic solution: objective 11955.000000 Root relaxation: objective 8.845237e+03, 1727 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 8845.23656 0 6 11955.0000 8845.23656 26.0% - 0s H 0 0 8858.0000000 8845.23656 0.14% - 0s H 0 0 8850.0000000 8845.23656 0.05% - 0s 0 0 cutoff 0 8850.00000 8849.00885 0.01% - 0s Cutting planes: Gomory: 1 Implied bound: 1 MIR: 4 Explored 0 nodes (1730 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.850000000000e+03, best bound 8.850000000000e+03, gap 0.0%