Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:27:21 2013 Optimize a model with 2047 rows, 529 columns and 6348 nonzeros Presolve removed 476 rows and 277 columns Presolve time: 0.02s Presolved: 1571 rows, 252 columns, 4913 nonzeros Variable types: 10 continuous, 242 integer (242 binary) Found heuristic solution: objective 10353.000000 Root relaxation: objective 7.581417e+03, 1039 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 7581.41667 0 8 10353.0000 7581.41667 26.8% - 0s H 0 0 7595.0000000 7581.41667 0.18% - 0s 0 0 7582.00000 0 13 7595.00000 7582.00000 0.17% - 0s 0 0 7582.00000 0 8 7595.00000 7582.00000 0.17% - 0s H 0 0 7586.0000000 7582.00000 0.05% - 0s 0 0 7582.00000 0 13 7586.00000 7582.00000 0.05% - 0s 0 1 7582.00000 0 11 7586.00000 7582.00000 0.05% - 0s Cutting planes: Gomory: 3 Cover: 2 Implied bound: 2 MIR: 9 Zero half: 1 Explored 4 nodes (1304 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.586000000000e+03, best bound 7.586000000000e+03, gap 0.0%