Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:26:59 2013 Optimize a model with 1600 rows, 100700 columns and 201900 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.48s Presolved: 1500 rows, 100600 columns, 201500 nonzeros Variable types: 100500 continuous, 100 integer (100 binary) Root relaxation: objective 8.570461e+05, 6171 iterations, 0.84 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 857046.104 0 1 - 857046.104 - - 1s H 0 0 864531.38994 857046.104 0.87% - 1s 0 0 857083.871 0 1 864531.390 857083.871 0.86% - 2s 0 0 857090.127 0 1 864531.390 857090.127 0.86% - 2s 0 0 857108.616 0 1 864531.390 857108.616 0.86% - 2s 0 0 857108.616 0 1 864531.390 857108.616 0.86% - 3s 0 0 857108.616 0 1 864531.390 857108.616 0.86% - 3s 0 0 857108.616 0 1 864531.390 857108.616 0.86% - 4s 0 0 857114.353 0 1 864531.390 857114.353 0.86% - 4s 0 0 857116.069 0 1 864531.390 857116.069 0.86% - 5s 0 0 857119.358 0 1 864531.390 857119.358 0.86% - 5s 0 0 857122.357 0 1 864531.390 857122.357 0.86% - 5s 0 0 857122.766 0 1 864531.390 857122.766 0.86% - 6s 0 0 857123.194 0 1 864531.390 857123.194 0.86% - 6s 0 0 857123.677 0 1 864531.390 857123.677 0.86% - 6s 0 0 857123.820 0 1 864531.390 857123.820 0.86% - 7s 0 0 857124.034 0 1 864531.390 857124.034 0.86% - 7s 0 0 857124.101 0 1 864531.390 857124.101 0.86% - 8s 0 0 857124.198 0 1 864531.390 857124.198 0.86% - 8s 0 0 857124.237 0 1 864531.390 857124.237 0.86% - 8s 0 0 857124.271 0 1 864531.390 857124.271 0.86% - 9s 0 0 857124.284 0 1 864531.390 857124.284 0.86% - 9s 0 0 857124.284 0 1 864531.390 857124.284 0.86% - 10s 0 2 857147.345 0 1 864531.390 857147.345 0.85% - 11s 14 14 859535.988 14 1 864531.390 858207.583 0.73% 94.9 15s * 15 3 15 859564.51177 858207.583 0.16% 90.7 15s * 22 6 6 859105.49939 858413.538 0.08% 92.5 16s H 27 3 859103.12167 858451.167 0.08% 78.9 16s * 55 0 11 858977.34942 858977.349 0.0% 61.1 18s Cutting planes: Flow cover: 20 Explored 56 nodes (12223 simplex iterations) in 18.90 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.589773494193e+05, best bound 8.589773494193e+05, gap 0.0%