Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:40:05 2013 Optimize a model with 197540 rows, 196140 columns and 784140 nonzeros Presolve removed 9556 rows and 0 columns Presolve time: 1.89s Presolved: 187984 rows, 196140 columns, 765028 nonzeros Variable types: 196000 continuous, 140 integer (140 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 20340 1.2921027e+05 3.486804e+04 0.000000e+00 5s 29323 1.7473907e+05 5.552301e+04 0.000000e+00 10s 38329 2.2379322e+05 1.592000e+04 0.000000e+00 15s 45074 2.3695362e+05 1.569179e+04 0.000000e+00 20s 49577 2.4060710e+05 1.736560e+03 0.000000e+00 25s 50562 2.4068936e+05 0.000000e+00 0.000000e+00 27s Root relaxation: objective 2.406894e+05, 50562 iterations, 26.60 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 240689.360 0 3 - 240689.360 - - 29s H 0 0 248455.00000 240689.360 3.13% - 31s H 0 0 241103.00000 240689.360 0.17% - 32s 0 0 240690.401 0 4 241103.000 240690.401 0.17% - 33s 0 0 240690.401 0 3 241103.000 240690.401 0.17% - 48s 0 0 240690.401 0 4 241103.000 240690.401 0.17% - 49s 0 0 240690.401 0 4 241103.000 240690.401 0.17% - 50s 0 0 240690.401 0 4 241103.000 240690.401 0.17% - 51s 0 0 240690.401 0 4 241103.000 240690.401 0.17% - 53s 0 2 240737.208 0 4 241103.000 240737.208 0.15% - 58s 3 4 241055.020 3 2 241103.000 240862.759 0.10% 414 60s * 12 6 10 241012.00000 240862.759 0.06% 161 61s * 21 0 5 240977.00000 240977.000 0.0% 146 62s Cutting planes: Gomory: 1 Flow cover: 7 Explored 22 nodes (74558 simplex iterations) in 62.94 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.409770000000e+05, best bound 2.409770000000e+05, gap 0.0%