Gurobi 5.0.1 (linux64) logging started Wed Apr 24 08:58:05 2013 Optimize a model with 97118 rows, 96138 columns and 384258 nonzeros Presolve removed 1867 rows and 0 columns Presolve time: 0.71s Presolved: 95251 rows, 96138 columns, 380524 nonzeros Variable types: 96040 continuous, 98 integer (98 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 17820 1.1450932e+05 8.139031e+03 0.000000e+00 5s 21425 1.1712917e+05 0.000000e+00 0.000000e+00 7s Root relaxation: objective 1.171292e+05, 21425 iterations, 7.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 117129.165 0 4 - 117129.165 - - 8s H 0 0 121445.00000 117129.165 3.55% - 8s 0 0 117134.791 0 5 121445.000 117134.791 3.55% - 9s 0 0 117135.392 0 5 121445.000 117135.392 3.55% - 10s 0 0 117135.392 0 5 121445.000 117135.392 3.55% - 11s H 0 0 121398.00000 117135.392 3.51% - 14s 0 2 117135.845 0 5 121398.000 117135.845 3.51% - 16s H 1 1 118547.42553 117135.845 1.19% 0.0 16s 15 16 117287.138 15 1 118547.426 117238.972 1.10% 130 20s H 19 14 117718.72727 117238.972 0.41% 112 21s H 21 13 117636.40000 117238.972 0.34% 114 21s 45 24 117491.143 12 1 117636.400 117318.112 0.27% 120 25s * 50 24 17 117620.00000 117318.112 0.26% 117 25s * 76 13 8 117586.00000 117463.681 0.10% 124 28s H 81 5 117521.00000 117468.143 0.04% 119 28s Cutting planes: Gomory: 3 Flow cover: 10 Explored 89 nodes (31851 simplex iterations) in 28.95 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.175210000000e+05, best bound 1.175138205128e+05, gap 0.0061%