Gurobi 5.0.1 (linux64) logging started Mon Feb 4 18:53:54 2013 Optimize a model with 16261 rows, 2116 columns and 49726 nonzeros Presolve removed 1820 rows and 1074 columns Presolve time: 0.12s Presolved: 14441 rows, 1042 columns, 44394 nonzeros Variable types: 25 continuous, 1017 integer (1017 binary) Found heuristic solution: objective 38057.000000 Root relaxation: objective 2.598207e+04, 7562 iterations, 0.36 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 25982.0667 0 13 38057.0000 25982.0667 31.7% - 0s H 0 0 25997.000000 25982.0667 0.06% - 0s H 0 0 25993.000000 25982.0667 0.04% - 0s 0 0 25983.0000 0 15 25993.0000 25983.0000 0.04% - 0s 0 0 25983.0000 0 12 25993.0000 25983.0000 0.04% - 0s 0 0 25983.0000 0 21 25993.0000 25983.0000 0.04% - 0s H 0 0 25991.000000 25983.0000 0.03% - 0s 0 0 25983.0000 0 29 25991.0000 25983.0000 0.03% - 0s 0 0 25983.0000 0 16 25991.0000 25983.0000 0.03% - 0s 0 0 25983.0000 0 24 25991.0000 25983.0000 0.03% - 0s H 0 0 25990.000000 25983.0000 0.03% - 0s 0 0 25983.0000 0 13 25990.0000 25983.0000 0.03% - 0s 0 2 25983.0000 0 11 25990.0000 25983.0000 0.03% - 0s H 8 6 25988.000000 25983.0000 0.02% 2.9 0s H 716 187 25986.000000 25983.0000 0.01% 16.2 1s Cutting planes: Gomory: 1 Cover: 1 MIR: 6 Zero half: 1 Explored 2760 nodes (44409 simplex iterations) in 2.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.598600000000e+04, best bound 2.598400000000e+04, gap 0.0077%