Gurobi 5.0.1 (linux64) logging started Wed Apr 24 13:54:29 2013 Optimize a model with 2860 rows, 676260 columns and 1352260 nonzeros Presolve time: 2.65s Presolved: 2860 rows, 676260 columns, 1352260 nonzeros Variable types: 676000 continuous, 260 integer (260 binary) Root relaxation: objective 5.121512e+05, 22029 iterations, 4.36 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 512151.182 0 8 - 512151.182 - - 7s H 0 0 554943.00000 512151.182 7.71% - 9s H 0 0 530089.00000 512151.182 3.38% - 12s 0 0 512625.231 0 5 530089.000 512625.231 3.29% - 14s 0 0 512625.231 0 8 530089.000 512625.231 3.29% - 21s 0 0 512626.959 0 5 530089.000 512626.959 3.29% - 24s 0 0 512734.152 0 5 530089.000 512734.152 3.27% - 26s 0 0 512745.695 0 6 530089.000 512745.695 3.27% - 27s 0 0 512749.538 0 5 530089.000 512749.538 3.27% - 28s 0 0 512749.538 0 5 530089.000 512749.538 3.27% - 29s 0 0 512749.645 0 5 530089.000 512749.645 3.27% - 31s 0 0 512749.907 0 4 530089.000 512749.907 3.27% - 32s 0 0 512750.510 0 5 530089.000 512750.510 3.27% - 34s 0 0 512750.644 0 4 530089.000 512750.644 3.27% - 35s 0 2 512774.809 0 4 530089.000 512774.809 3.27% - 41s H 1 1 527027.90491 512774.809 2.70% 0.0 42s H 3 3 521861.20339 513009.109 1.70% 342 45s H 11 11 518000.00000 513009.109 0.96% 129 48s H 16 16 516767.00000 513009.109 0.73% 96.6 49s 16 18 513150.469 15 1 516767.000 513009.109 0.73% 98.8 50s H 21 9 513776.00000 513009.109 0.15% 79.5 51s H 23 7 513348.73333 513009.109 0.07% 73.8 52s * 27 7 25 513333.00000 513009.109 0.06% 66.6 52s 37 8 513241.726 4 2 513333.000 513057.954 0.05% 81.2 55s Cutting planes: Implied bound: 197 Flow cover: 7 Explored 49 nodes (46285 simplex iterations) in 57.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.133330000000e+05, best bound 5.132908961749e+05, gap 0.0082%