Gurobi 5.0.1 (linux64) logging started Mon Feb 4 17:24:09 2013 Optimize a model with 6017 rows, 1089 columns and 18513 nonzeros Presolve removed 1267 rows and 572 columns Presolve time: 0.04s Presolved: 4750 rows, 517 columns, 14669 nonzeros Variable types: 14 continuous, 503 integer (503 binary) Found heuristic solution: objective 21649.000000 Root relaxation: objective 1.624428e+04, 1722 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16244.2778 0 10 21649.0000 16244.2778 25.0% - 0s H 0 0 16255.000000 16244.2778 0.07% - 0s H 0 0 16253.000000 16244.2778 0.05% - 0s 0 0 16245.0000 0 10 16253.0000 16245.0000 0.05% - 0s 0 0 16245.0000 0 8 16253.0000 16245.0000 0.05% - 0s 0 0 16245.0000 0 11 16253.0000 16245.0000 0.05% - 0s 0 0 16245.0000 0 16 16253.0000 16245.0000 0.05% - 0s 0 0 16245.1395 0 21 16253.0000 16245.1395 0.05% - 0s 0 0 16245.3024 0 21 16253.0000 16245.3024 0.05% - 0s 0 0 16245.3375 0 20 16253.0000 16245.3375 0.05% - 0s 0 0 16245.3427 0 23 16253.0000 16245.3427 0.05% - 0s 0 0 16245.4190 0 18 16253.0000 16245.4190 0.05% - 0s 0 0 16245.7591 0 24 16253.0000 16245.7591 0.04% - 0s 0 0 16245.8112 0 20 16253.0000 16245.8112 0.04% - 0s 0 0 16245.8419 0 22 16253.0000 16245.8419 0.04% - 0s 0 0 16245.8889 0 24 16253.0000 16245.8889 0.04% - 0s 0 0 16245.8889 0 24 16253.0000 16245.8889 0.04% - 0s 0 2 16245.9704 0 24 16253.0000 16245.9704 0.04% - 0s H 27 8 16250.000000 16247.1518 0.02% 4.9 0s Cutting planes: Gomory: 1 MIR: 24 Zero half: 1 Mod-K: 1 Explored 37 nodes (2238 simplex iterations) in 0.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.625000000000e+04, best bound 1.625000000000e+04, gap 0.0%