Gurobi 5.0.1 (linux64) logging started Mon Feb 4 17:56:26 2013 Optimize a model with 7806 rows, 1296 columns and 23976 nonzeros Presolve removed 846 rows and 650 columns Presolve time: 0.05s Presolved: 6960 rows, 646 columns, 21605 nonzeros Variable types: 22 continuous, 624 integer (624 binary) Found heuristic solution: objective 23556.000000 Found heuristic solution: objective 20600.000000 Root relaxation: objective 1.544553e+04, 3810 iterations, 0.13 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15445.5257 0 13 20600.0000 15445.5257 25.0% - 0s H 0 0 15462.000000 15445.5257 0.11% - 0s H 0 0 15458.000000 15445.5257 0.08% - 0s 0 0 15446.0870 0 15 15458.0000 15446.0870 0.08% - 0s 0 0 15446.0870 0 11 15458.0000 15446.0870 0.08% - 0s H 0 0 15456.000000 15446.0870 0.06% - 0s 0 0 15446.0870 0 22 15456.0000 15446.0870 0.06% - 0s H 0 0 15455.000000 15446.0870 0.06% - 0s 0 1 15446.0870 0 22 15455.0000 15446.0870 0.06% - 0s H 1 1 15454.000000 15446.0870 0.05% 24.0 0s H 204 109 15453.000000 15447.3602 0.04% 22.6 0s H 285 126 15452.000000 15447.5402 0.03% 20.6 0s H 504 86 15451.000000 15448.3693 0.02% 20.3 1s Cutting planes: Gomory: 13 Cover: 24 Implied bound: 1 MIR: 51 Zero half: 9 Explored 666 nodes (19706 simplex iterations) in 1.18 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.545100000000e+04, best bound 1.545000000000e+04, gap 0.0065%