Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:11:03 2013 Optimize a model with 469 rows, 196 columns and 1470 nonzeros Presolve removed 143 rows and 103 columns Presolve time: 0.00s Presolved: 326 rows, 93 columns, 1044 nonzeros Variable types: 6 continuous, 87 integer (87 binary) Found heuristic solution: objective 3405.0000000 Root relaxation: objective 2.648356e+03, 16 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2648.35556 0 7 3405.00000 2648.35556 22.2% - 0s H 0 0 2662.0000000 2648.35556 0.51% - 0s 0 0 2649.82961 0 12 2662.00000 2649.82961 0.46% - 0s 0 0 2649.82961 0 10 2662.00000 2649.82961 0.46% - 0s 0 0 2650.58247 0 10 2662.00000 2650.58247 0.43% - 0s H 0 0 2661.0000000 2650.58247 0.39% - 0s 0 0 2651.88567 0 15 2661.00000 2651.88567 0.34% - 0s 0 0 2652.62860 0 13 2661.00000 2652.62860 0.31% - 0s 0 0 2652.87628 0 14 2661.00000 2652.87628 0.31% - 0s 0 0 2653.00066 0 14 2661.00000 2653.00066 0.30% - 0s H 0 0 2660.0000000 2653.00066 0.26% - 0s 0 1 2653.00100 0 14 2660.00000 2653.00100 0.26% - 0s Cutting planes: Gomory: 7 Cover: 3 Implied bound: 3 Clique: 1 MIR: 7 GUB cover: 1 Zero half: 1 Mod-K: 1 Explored 5 nodes (221 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.660000000000e+03, best bound 2.660000000000e+03, gap 0.0%