Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:28:32 2013 Optimize a model with 197540 rows, 196140 columns and 784140 nonzeros Presolve removed 10230 rows and 0 columns Presolve time: 1.93s Presolved: 187310 rows, 196140 columns, 763680 nonzeros Variable types: 196000 continuous, 140 integer (140 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 20586 1.4060740e+05 4.537553e+04 0.000000e+00 5s 27900 1.7580087e+05 2.463446e+04 0.000000e+00 10s 38316 2.3101917e+05 8.028004e+03 0.000000e+00 15s 43036 2.3540180e+05 7.856038e+03 0.000000e+00 20s 47518 2.3691265e+05 0.000000e+00 0.000000e+00 25s Root relaxation: objective 2.369126e+05, 47518 iterations, 25.48 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 236912.643 0 4 - 236912.643 - - 28s H 0 0 242195.00000 236912.643 2.18% - 29s H 0 0 238333.00000 236912.643 0.60% - 31s 0 0 236914.133 0 5 238333.000 236914.133 0.60% - 31s 0 0 236915.005 0 5 238333.000 236915.005 0.59% - 33s 0 0 236915.005 0 5 238333.000 236915.005 0.59% - 35s H 0 0 237585.00000 236915.005 0.28% - 42s 0 0 236915.005 0 4 237585.000 236915.005 0.28% - 64s 0 0 236915.191 0 5 237585.000 236915.191 0.28% - 65s 0 2 236921.545 0 5 237585.000 236921.545 0.28% - 72s 3 5 237195.951 2 2 237585.000 237001.343 0.25% 716 76s H 9 9 237499.16216 237001.343 0.21% 336 78s H 12 8 237399.00000 237001.343 0.17% 296 79s H 13 8 237370.00000 237001.343 0.16% 284 79s * 14 8 12 237335.00000 237001.343 0.14% 275 79s 16 8 237209.310 1 4 237335.000 237111.314 0.09% 287 80s * 22 2 4 237283.00000 237246.476 0.02% 309 82s Cutting planes: Gomory: 2 Flow cover: 1 Explored 25 nodes (77907 simplex iterations) in 82.81 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.372830000000e+05, best bound 2.372830000000e+05, gap 0.0%