Gurobi 5.0.1 (linux64) logging started Wed Apr 24 07:41:01 2013 Optimize a model with 91295 rows, 90345 columns and 361095 nonzeros Presolve removed 4816 rows and 0 columns Presolve time: 0.65s Presolved: 86479 rows, 90345 columns, 351463 nonzeros Variable types: 90250 continuous, 95 integer (95 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 19582 1.2254025e+05 9.307090e+03 0.000000e+00 5s 22607 1.2622786e+05 0.000000e+00 0.000000e+00 7s Root relaxation: objective 1.262279e+05, 22607 iterations, 6.72 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 126227.855 0 7 - 126227.855 - - 7s H 0 0 139826.00000 126227.855 9.73% - 8s 0 0 126232.547 0 9 139826.000 126232.547 9.72% - 9s H 0 0 138216.00000 126232.547 8.67% - 9s H 0 0 137430.00000 126232.547 8.15% - 10s 0 0 126232.753 0 9 137430.000 126232.753 8.15% - 10s H 0 0 129157.00000 126232.753 2.26% - 13s 0 2 126245.386 0 9 129157.000 126245.386 2.25% - 16s H 10 10 128823.46154 126490.402 1.81% 287 19s H 12 12 128434.72727 126490.402 1.51% 262 19s 13 15 126653.231 10 1 128434.727 126490.402 1.51% 262 20s H 21 18 127386.00000 126490.402 0.70% 204 21s * 24 17 21 126886.00000 126490.402 0.31% 194 22s * 32 21 8 126884.00000 126511.679 0.29% 178 22s * 51 22 8 126868.00000 126588.492 0.22% 165 24s 54 21 126654.377 3 2 126868.000 126597.774 0.21% 162 25s * 76 21 12 126832.00000 126624.677 0.16% 143 26s Cutting planes: Gomory: 5 Flow cover: 8 Explored 125 nodes (37836 simplex iterations) in 29.74 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.268320000000e+05, best bound 1.268270816327e+05, gap 0.0039%