Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:00:53 2013 Optimize a model with 145320 rows, 144120 columns and 576120 nonzeros Presolve removed 9726 rows and 0 columns Presolve time: 1.26s Presolved: 135594 rows, 144120 columns, 556668 nonzeros Variable types: 144000 continuous, 120 integer (120 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 20243 1.5965074e+05 7.176883e+04 0.000000e+00 5s 30035 2.1622705e+05 5.628896e+03 0.000000e+00 10s 34454 2.1983049e+05 0.000000e+00 0.000000e+00 13s Root relaxation: objective 2.198305e+05, 34454 iterations, 12.75 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 219830.495 0 5 - 219830.495 - - 14s H 0 0 233367.00000 219830.495 5.80% - 15s 0 0 219835.991 0 7 233367.000 219835.991 5.80% - 16s 0 0 219835.991 0 7 233367.000 219835.991 5.80% - 17s H 0 0 230455.04038 219835.991 4.61% - 23s H 0 0 230264.27324 219835.991 4.53% - 23s H 0 0 227562.92575 219835.991 3.40% - 24s H 0 0 223060.16393 219835.991 1.45% - 24s H 0 0 222156.00000 219835.991 1.04% - 24s 0 2 219843.216 0 7 222156.000 219843.216 1.04% - 28s 3 5 219864.779 3 4 222156.000 219864.779 1.03% 141 30s H 8 8 220440.25000 219878.967 0.25% 270 33s H 11 10 220420.47368 219878.967 0.25% 253 34s 12 12 220198.467 9 2 220420.474 219878.967 0.25% 271 35s H 13 11 220368.81818 219878.967 0.22% 251 35s H 14 9 220231.00000 219878.967 0.16% 238 35s * 17 5 13 220193.00000 219878.967 0.14% 203 35s * 24 4 7 220075.00000 219906.866 0.08% 201 37s Cutting planes: Gomory: 2 Flow cover: 3 Explored 29 nodes (40159 simplex iterations) in 38.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200750000000e+05, best bound 2.200750000000e+05, gap 0.0%