Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:37:12 2013 Optimize a model with 197540 rows, 196140 columns and 784140 nonzeros Presolve removed 9036 rows and 0 columns Presolve time: 1.91s Presolved: 188504 rows, 196140 columns, 766068 nonzeros Variable types: 196000 continuous, 140 integer (140 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 20767 1.3405870e+05 3.165127e+04 0.000000e+00 5s 29997 1.8849756e+05 1.900255e+05 0.000000e+00 10s 37036 2.2767136e+05 8.526940e+03 0.000000e+00 15s 42748 2.3443407e+05 1.084418e+03 0.000000e+00 20s 44376 2.3464543e+05 0.000000e+00 0.000000e+00 23s Root relaxation: objective 2.346454e+05, 44376 iterations, 23.12 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 234645.433 0 5 - 234645.433 - - 25s H 0 0 246117.00000 234645.433 4.66% - 26s H 0 0 235868.00000 234645.433 0.52% - 28s 0 0 234652.252 0 6 235868.000 234652.252 0.52% - 29s 0 0 234652.280 0 6 235868.000 234652.280 0.52% - 31s 0 0 234652.280 0 6 235868.000 234652.280 0.52% - 34s 0 0 234652.280 0 5 235868.000 234652.280 0.52% - 62s 0 0 234652.444 0 6 235868.000 234652.444 0.52% - 63s 0 0 234652.472 0 6 235868.000 234652.472 0.52% - 64s 0 0 234652.472 0 6 235868.000 234652.472 0.52% - 66s 0 2 234658.377 0 6 235868.000 234658.377 0.51% - 74s 2 5 234783.562 2 2 235868.000 234783.562 0.46% 348 75s H 10 7 235079.95238 234794.864 0.12% 252 78s 20 7 235042.542 19 1 235079.952 234794.864 0.12% 149 80s * 24 6 23 235060.00000 234794.864 0.11% 134 80s * 29 7 3 235048.00000 234834.421 0.09% 161 82s Cutting planes: Gomory: 3 Flow cover: 7 Explored 41 nodes (75246 simplex iterations) in 83.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.350480000000e+05, best bound 2.350370000000e+05, gap 0.0047%