Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:43:20 2013 Optimize a model with 2200 rows, 400200 columns and 800200 nonzeros Presolve time: 1.08s Presolved: 2200 rows, 400200 columns, 800200 nonzeros Variable types: 400000 continuous, 200 integer (200 binary) Root relaxation: objective 4.544254e+05, 13663 iterations, 1.56 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 454425.383 0 7 - 454425.383 - - 3s H 0 0 492778.00000 454425.383 7.78% - 4s H 0 0 464690.00000 454425.383 2.21% - 5s 0 0 454885.584 0 7 464690.000 454885.584 2.11% - 7s 0 0 454885.584 0 7 464690.000 454885.584 2.11% - 10s 0 0 454885.584 0 7 464690.000 454885.584 2.11% - 12s 0 0 454926.377 0 5 464690.000 454926.377 2.10% - 13s 0 0 454927.221 0 6 464690.000 454927.221 2.10% - 14s 0 0 454927.239 0 6 464690.000 454927.239 2.10% - 15s 0 0 454927.239 0 6 464690.000 454927.239 2.10% - 15s 0 2 454966.335 0 6 464690.000 454966.335 2.09% - 18s 2 5 455687.922 1 6 464690.000 455118.668 2.06% 649 21s H 10 10 458241.00000 455195.231 0.66% 267 24s 10 12 455585.915 9 3 458241.000 455195.231 0.66% 315 25s H 15 12 455785.00000 455195.231 0.13% 232 25s * 26 14 21 455743.00000 455195.231 0.12% 147 26s 52 28 455577.213 14 1 455743.000 455309.663 0.10% 124 30s H 74 19 455654.00000 455403.133 0.06% 113 32s H 83 17 455581.00000 455418.869 0.04% 108 33s 96 15 455500.618 11 1 455581.000 455457.737 0.03% 105 35s * 105 7 11 455548.00000 455503.533 0.01% 101 35s Cutting planes: Implied bound: 338 Flow cover: 6 Explored 106 nodes (38521 simplex iterations) in 35.90 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.555480000000e+05, best bound 4.555035333333e+05, gap 0.0098%