Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:14:16 2013 Optimize a model with 833 rows, 289 columns and 2601 nonzeros Presolve removed 172 rows and 145 columns Presolve time: 0.01s Presolved: 661 rows, 144 columns, 2122 nonzeros Variable types: 10 continuous, 134 integer (134 binary) Found heuristic solution: objective 5096.0000000 Found heuristic solution: objective 4596.0000000 Root relaxation: objective 3.196002e+03, 34 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3196.00181 0 8 4596.00000 3196.00181 30.5% - 0s 0 0 3199.79687 0 15 4596.00000 3199.79687 30.4% - 0s H 0 0 3218.0000000 3199.79687 0.57% - 0s H 0 0 3209.0000000 3199.79687 0.29% - 0s H 0 0 3201.0000000 3199.79687 0.04% - 0s 0 0 cutoff 0 3201.00000 3200.00320 0.03% - 0s Cutting planes: Gomory: 1 Cover: 2 Clique: 1 MIR: 10 GUB cover: 1 Zero half: 2 Explored 0 nodes (73 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.201000000000e+03, best bound 3.201000000000e+03, gap 0.0%