Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:54:20 2013 Optimize a model with 2420 rows, 484220 columns and 968220 nonzeros Presolve time: 1.48s Presolved: 2420 rows, 484220 columns, 968220 nonzeros Variable types: 484000 continuous, 220 integer (220 binary) Root relaxation: objective 5.599517e+05, 15324 iterations, 2.38 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 559951.747 0 5 - 559951.747 - - 4s H 0 0 593064.00000 559951.747 5.58% - 6s 0 0 560226.679 0 5 593064.000 560226.679 5.54% - 9s 0 0 560272.115 0 3 593064.000 560272.115 5.53% - 11s H 0 0 576435.38209 560272.115 2.80% - 11s H 0 0 575325.00000 560272.115 2.62% - 11s 0 0 560275.078 0 4 575325.000 560275.078 2.62% - 12s H 0 0 575273.00000 560275.078 2.61% - 12s 0 0 560279.435 0 3 575273.000 560279.435 2.61% - 13s 0 0 560283.882 0 4 575273.000 560283.882 2.61% - 14s 0 0 560284.298 0 3 575273.000 560284.298 2.61% - 15s H 0 0 575161.00000 560284.298 2.59% - 15s 0 0 560284.298 0 3 575161.000 560284.298 2.59% - 16s H 0 0 562736.00000 560284.298 0.44% - 19s 0 0 560284.298 0 5 562736.000 560284.298 0.44% - 23s 0 0 560284.298 0 5 562736.000 560284.298 0.44% - 24s 0 0 560284.298 0 3 562736.000 560284.298 0.44% - 25s 0 0 560284.298 0 4 562736.000 560284.298 0.44% - 25s 0 0 560284.298 0 4 562736.000 560284.298 0.44% - 26s 0 0 560284.298 0 3 562736.000 560284.298 0.44% - 26s 0 0 560284.298 0 3 562736.000 560284.298 0.44% - 27s 0 0 560284.298 0 3 562736.000 560284.298 0.44% - 27s 0 0 560284.298 0 3 562736.000 560284.298 0.44% - 28s 0 2 560288.489 0 3 562736.000 560288.489 0.43% - 30s 9 11 560798.893 8 1 562736.000 560422.042 0.41% 219 35s H 16 13 561645.00000 560422.042 0.22% 192 38s H 23 11 561455.00000 560422.042 0.18% 141 38s * 24 12 22 561413.00000 560422.042 0.18% 136 38s 28 13 560787.450 4 4 561413.000 560501.096 0.16% 144 40s 50 14 560797.121 5 1 561413.000 560727.946 0.12% 167 45s 72 11 560996.458 7 1 561413.000 560805.352 0.11% 184 50s Cutting planes: Implied bound: 173 Flow cover: 9 Explored 92 nodes (41692 simplex iterations) in 54.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.614130000000e+05, best bound 5.613574332587e+05, gap 0.0099%