Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:50:52 2013 Optimize a model with 226650 rows, 225150 columns and 900150 nonzeros Presolve removed 12322 rows and 0 columns Presolve time: 2.39s Presolved: 214328 rows, 225150 columns, 875506 nonzeros Variable types: 225000 continuous, 150 integer (150 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 21491 1.3810691e+05 4.674825e+04 0.000000e+00 5s 30454 1.6094254e+05 4.107524e+04 0.000000e+00 10s 35231 1.8292874e+05 8.176817e+04 0.000000e+00 15s 42259 2.2642906e+05 1.602396e+04 0.000000e+00 20s 46526 2.3796066e+05 9.456146e+03 0.000000e+00 25s 51295 2.4330508e+05 2.913678e+03 0.000000e+00 30s 54056 2.4510751e+05 1.652031e+03 0.000000e+00 35s 54947 2.4522620e+05 0.000000e+00 0.000000e+00 37s Root relaxation: objective 2.452262e+05, 54947 iterations, 37.48 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 245226.201 0 3 - 245226.201 - - 40s H 0 0 253361.00000 245226.201 3.21% - 41s H 0 0 246347.00000 245226.201 0.45% - 43s 0 0 245226.950 0 4 246347.000 245226.950 0.45% - 44s 0 0 245226.950 0 4 246347.000 245226.950 0.45% - 46s 0 0 245226.950 0 4 246347.000 245226.950 0.45% - 49s 0 0 245226.950 0 3 246347.000 245226.950 0.45% - 86s 0 0 245226.967 0 4 246347.000 245226.967 0.45% - 88s 0 0 245227.752 0 4 246347.000 245227.752 0.45% - 89s 0 0 245227.752 0 4 246347.000 245227.752 0.45% - 90s 0 2 245236.846 0 4 246347.000 245236.846 0.45% - 101s 4 6 245371.761 3 2 246347.000 245272.393 0.44% 578 105s 13 14 245452.016 11 3 246347.000 245272.393 0.44% 358 110s H 14 12 245786.72000 245272.393 0.21% 332 110s H 17 12 245724.00000 245272.393 0.18% 311 111s * 21 10 16 245675.00000 245272.393 0.16% 267 111s H 33 13 245540.00000 245361.262 0.07% 209 113s * 37 14 15 245503.00000 245361.262 0.06% 192 114s 40 10 cutoff 4 245503.000 245374.849 0.05% 207 115s * 49 5 12 245417.00000 245392.500 0.01% 177 116s Cutting planes: Gomory: 1 Flow cover: 5 Explored 50 nodes (90292 simplex iterations) in 116.36 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.454170000000e+05, best bound 2.453925000000e+05, gap 0.0100%