Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:52:15 2013 Optimize a model with 2310 rows, 441210 columns and 882210 nonzeros Presolve time: 1.32s Presolved: 2310 rows, 441210 columns, 882210 nonzeros Variable types: 441000 continuous, 210 integer (210 binary) Root relaxation: objective 4.595688e+05, 16969 iterations, 2.42 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 459568.785 0 5 - 459568.785 - - 4s H 0 0 484506.00000 459568.785 5.15% - 5s 0 0 459600.460 0 4 484506.000 459600.460 5.14% - 7s H 0 0 484158.00000 459600.460 5.07% - 7s 0 0 459601.578 0 3 484158.000 459601.578 5.07% - 8s 0 0 459603.658 0 2 484158.000 459603.658 5.07% - 9s 0 0 459603.658 0 2 484158.000 459603.658 5.07% - 10s 0 0 459603.658 0 2 484158.000 459603.658 5.07% - 11s 0 0 459606.691 0 2 484158.000 459606.691 5.07% - 12s H 0 0 483716.00000 459606.691 4.98% - 12s 0 0 459610.551 0 2 483716.000 459610.551 4.98% - 13s 0 0 459612.174 0 2 483716.000 459612.174 4.98% - 14s H 0 0 483301.00000 459612.174 4.90% - 14s 0 0 459612.174 0 2 483301.000 459612.174 4.90% - 15s H 0 0 483147.00000 459612.174 4.87% - 15s 0 0 459612.174 0 2 483147.000 459612.174 4.87% - 16s 0 0 459612.174 0 2 483147.000 459612.174 4.87% - 17s 0 0 459612.174 0 2 483147.000 459612.174 4.87% - 18s 0 2 459615.457 0 2 483147.000 459615.457 4.87% - 21s H 1 1 468984.51181 459615.457 2.00% 0.0 21s H 2 2 467820.00000 459615.708 1.75% 32.5 21s * 5 3 5 459626.00000 459626.000 0.0% 52.6 22s Cutting planes: Implied bound: 59 Flow cover: 7 Explored 6 nodes (17748 simplex iterations) in 23.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.596260000000e+05, best bound 4.596260000000e+05, gap 0.0%