Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:40:01 2013 Optimize a model with 1400 rows, 100500 columns and 201000 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.18s Presolved: 1600 rows, 100600 columns, 201300 nonzeros Variable types: 100400 continuous, 200 integer (200 binary) Root relaxation: objective 9.481640e+05, 5998 iterations, 0.39 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 948163.962 0 8 - 948163.962 - - 0s H 0 0 1002551.7355 948163.962 5.42% - 1s H 0 0 977375.90020 948163.962 2.99% - 1s 0 0 948316.869 0 8 977375.900 948316.869 2.97% - 1s 0 0 948358.552 0 8 977375.900 948358.552 2.97% - 2s 0 0 948374.404 0 8 977375.900 948374.404 2.97% - 2s 0 0 948374.404 0 8 977375.900 948374.404 2.97% - 2s 0 0 948374.404 0 8 977375.900 948374.404 2.97% - 2s 0 0 948374.404 0 8 977375.900 948374.404 2.97% - 2s 0 0 948376.717 0 8 977375.900 948376.717 2.97% - 3s 0 0 948377.215 0 8 977375.900 948377.215 2.97% - 3s 0 0 948379.933 0 8 977375.900 948379.933 2.97% - 3s 0 0 948380.676 0 8 977375.900 948380.676 2.97% - 3s 0 0 948380.956 0 8 977375.900 948380.956 2.97% - 3s 0 0 948381.264 0 8 977375.900 948381.264 2.97% - 4s 0 0 948381.322 0 8 977375.900 948381.322 2.97% - 4s 0 0 948381.493 0 8 977375.900 948381.493 2.97% - 4s 0 0 948381.541 0 8 977375.900 948381.541 2.97% - 4s 0 0 948381.642 0 8 977375.900 948381.642 2.97% - 4s 0 0 948381.668 0 8 977375.900 948381.668 2.97% - 5s 0 0 948381.668 0 8 977375.900 948381.668 2.97% - 5s 0 2 948384.080 0 8 977375.900 948384.080 2.97% - 6s 21 23 949941.872 20 2 977375.900 948453.954 2.96% 106 10s * 25 11 24 950192.24822 948453.954 0.18% 95.0 10s * 54 4 18 949806.73067 949787.291 0.00% 129 14s Cutting planes: Flow cover: 23 Explored 55 nodes (15425 simplex iterations) in 14.21 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%