Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:32:09 2013 Optimize a model with 1800 rows, 100700 columns and 201900 nonzeros Presolve removed 300 rows and 200 columns Presolve time: 0.46s Presolved: 1500 rows, 100500 columns, 201100 nonzeros Variable types: 100400 continuous, 100 integer (100 binary) Root relaxation: objective 9.481640e+05, 5855 iterations, 0.65 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 948163.962 0 4 - 948163.962 - - 1s H 0 0 977375.90020 948163.962 2.99% - 1s 0 0 948320.529 0 4 977375.900 948320.529 2.97% - 2s 0 0 948359.344 0 4 977375.900 948359.344 2.97% - 2s 0 0 948367.978 0 4 977375.900 948367.978 2.97% - 2s 0 0 948368.574 0 4 977375.900 948368.574 2.97% - 3s 0 0 948374.772 0 4 977375.900 948374.772 2.97% - 3s 0 0 948376.033 0 4 977375.900 948376.033 2.97% - 3s 0 0 948377.709 0 4 977375.900 948377.709 2.97% - 4s 0 0 948378.008 0 4 977375.900 948378.008 2.97% - 4s 0 0 948379.397 0 4 977375.900 948379.397 2.97% - 4s 0 0 948379.803 0 4 977375.900 948379.803 2.97% - 4s 0 0 948379.906 0 4 977375.900 948379.906 2.97% - 5s 0 0 948380.271 0 4 977375.900 948380.271 2.97% - 5s 0 0 948380.507 0 4 977375.900 948380.507 2.97% - 5s 0 0 948380.703 0 4 977375.900 948380.703 2.97% - 6s 0 0 948380.812 0 4 977375.900 948380.812 2.97% - 6s 0 0 948380.840 0 4 977375.900 948380.840 2.97% - 7s 0 0 948381.043 0 4 977375.900 948381.043 2.97% - 7s 0 0 948381.043 0 4 977375.900 948381.043 2.97% - 8s 0 2 948381.243 0 4 977375.900 948381.243 2.97% - 8s 5 7 948975.526 4 1 977375.900 948461.600 2.96% 309 10s * 25 12 24 950192.24822 948461.600 0.18% 94.2 13s 34 8 cutoff 4 950192.248 949133.650 0.11% 135 15s * 52 4 18 949806.73067 949787.291 0.00% 153 18s Cutting planes: Flow cover: 39 Explored 53 nodes (15549 simplex iterations) in 18.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.498067306726e+05, best bound 9.497872913982e+05, gap 0.0020%