Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:28:01 2013 Optimize a model with 1600 rows, 100700 columns and 201900 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.56s Presolved: 1500 rows, 100600 columns, 201500 nonzeros Variable types: 100500 continuous, 100 integer (100 binary) Root relaxation: objective 9.481640e+05, 6262 iterations, 0.75 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 948359.880 0 4 977375.900 948359.880 2.97% - 2s 0 0 948368.802 0 4 977375.900 948368.802 2.97% - 3s 0 0 948368.826 0 4 977375.900 948368.826 2.97% - 3s 0 0 948374.008 0 3 977375.900 948374.008 2.97% - 3s 0 0 948376.266 0 4 977375.900 948376.266 2.97% - 4s 0 0 948376.314 0 4 977375.900 948376.314 2.97% - 4s 0 0 948377.654 0 4 977375.900 948377.654 2.97% - 5s 0 0 948378.052 0 4 977375.900 948378.052 2.97% - 5s 0 0 948378.942 0 4 977375.900 948378.942 2.97% - 5s 0 0 948378.942 0 4 977375.900 948378.942 2.97% - 6s 0 0 948378.942 0 4 977375.900 948378.942 2.97% - 6s 0 2 948391.215 0 4 977375.900 948391.215 2.97% - 7s 11 13 949582.490 10 1 977375.900 948482.164 2.96% 177 10s * 25 12 24 950192.24822 948482.164 0.18% 103 12s 37 6 949407.205 2 1 950192.248 949407.205 0.08% 148 15s H 55 0 949806.73067 949797.322 0.00% 137 17s Cutting planes: Flow cover: 23 Explored 55 nodes (15699 simplex iterations) in 17.56 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.498067306726e+05, best bound 9.497973224946e+05, gap 0.0010%