Gurobi 5.0.1 (linux64) logging started Mon Feb 4 17:08:41 2013 Optimize a model with 4991 rows, 961 columns and 15376 nonzeros Presolve removed 789 rows and 492 columns Presolve time: 0.03s Presolved: 4202 rows, 469 columns, 13026 nonzeros Variable types: 15 continuous, 454 integer (454 binary) Found heuristic solution: objective 19875.000000 Root relaxation: objective 1.443555e+04, 2940 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14435.5500 0 10 19875.0000 14435.5500 27.4% - 0s H 0 0 14453.000000 14435.5500 0.12% - 0s 0 0 14436.0000 0 11 14453.0000 14436.0000 0.12% - 0s 0 0 14436.0000 0 9 14453.0000 14436.0000 0.12% - 0s H 0 0 14449.000000 14436.0000 0.09% - 0s 0 0 14436.0000 0 23 14449.0000 14436.0000 0.09% - 0s 0 0 14436.4366 0 29 14449.0000 14436.4366 0.09% - 0s 0 0 14436.7231 0 35 14449.0000 14436.7231 0.08% - 0s 0 0 14437.4284 0 33 14449.0000 14437.4284 0.08% - 0s 0 0 14437.7340 0 37 14449.0000 14437.7340 0.08% - 0s 0 0 14437.9488 0 34 14449.0000 14437.9488 0.08% - 0s H 0 0 14448.000000 14437.9488 0.07% - 0s 0 2 14438.0170 0 34 14448.0000 14438.0170 0.07% - 0s H 1 2 14447.000000 14438.0170 0.06% 10.0 0s * 143 68 27 14444.000000 14439.0771 0.03% 12.9 0s * 552 97 25 14443.000000 14440.3333 0.02% 9.9 0s * 576 29 29 14442.000000 14440.4429 0.01% 9.8 0s Cutting planes: Gomory: 7 Cover: 1 MIR: 38 Zero half: 3 Explored 583 nodes (9116 simplex iterations) in 0.46 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.444200000000e+04, best bound 1.444100000000e+04, gap 0.0069%