Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:24:11 2013 Optimize a model with 1600 rows, 100800 columns and 201700 nonzeros Presolve removed 200 rows and 300 columns Presolve time: 0.29s Presolved: 1400 rows, 100500 columns, 201000 nonzeros Variable types: 100400 continuous, 100 integer (100 binary) Root relaxation: objective 9.481640e+05, 7819 iterations, 0.59 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 H 0 0 952277.52233 948163.962 0.43% - 1s 0 0 948321.135 0 4 952277.522 948321.135 0.42% - 1s 0 0 948359.272 0 4 952277.522 948359.272 0.41% - 2s 0 0 948366.198 0 3 952277.522 948366.198 0.41% - 2s 0 0 948370.975 0 4 952277.522 948370.975 0.41% - 2s 0 0 948376.652 0 3 952277.522 948376.652 0.41% - 2s 0 0 948378.888 0 4 952277.522 948378.888 0.41% - 2s 0 0 948378.888 0 4 952277.522 948378.888 0.41% - 3s 0 0 948379.427 0 4 952277.522 948379.427 0.41% - 3s 0 0 948379.874 0 4 952277.522 948379.874 0.41% - 3s 0 0 948380.799 0 4 952277.522 948380.799 0.41% - 4s 0 0 948380.799 0 4 952277.522 948380.799 0.41% - 4s 0 2 948383.210 0 4 952277.522 948383.210 0.41% - 5s * 16 4 14 949806.73067 948461.966 0.14% 124 7s 28 4 949105.818 2 2 949806.731 949105.818 0.07% 181 10s Cutting planes: Flow cover: 19 Explored 38 nodes (14313 simplex iterations) in 10.90 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.498067306726e+05, best bound 9.498067306726e+05, gap 0.0%