Gurobi 5.0.1 (linux64) logging started Wed Apr 24 09:54:15 2013 Optimize a model with 101100 rows, 100100 columns and 400100 nonzeros Presolve removed 6110 rows and 0 columns Presolve time: 0.75s Presolved: 94990 rows, 100100 columns, 387880 nonzeros Variable types: 100000 continuous, 100 integer (100 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 20622 1.3605455e+05 2.486965e+03 0.000000e+00 5s 22392 1.3759665e+05 0.000000e+00 0.000000e+00 6s Root relaxation: objective 1.375967e+05, 22392 iterations, 5.89 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 137596.654 0 9 - 137596.654 - - 6s H 0 0 144564.00000 137596.654 4.82% - 7s 0 0 137599.632 0 10 144564.000 137599.632 4.82% - 8s 0 0 137600.452 0 11 144564.000 137600.452 4.82% - 9s 0 0 137600.478 0 11 144564.000 137600.478 4.82% - 10s 0 0 137600.478 0 11 144564.000 137600.478 4.82% - 11s H 0 0 143549.90441 137600.478 4.14% - 16s H 0 0 143341.83045 137600.478 4.01% - 16s H 0 0 142916.58779 137600.478 3.72% - 16s H 0 0 142822.16869 137600.478 3.66% - 16s H 0 0 138111.00000 137600.478 0.37% - 16s 0 0 137600.478 0 9 138111.000 137600.478 0.37% - 21s 0 0 137600.967 0 11 138111.000 137600.967 0.37% - 21s 0 0 137600.967 0 11 138111.000 137600.967 0.37% - 22s 0 0 137600.967 0 11 138111.000 137600.967 0.37% - 22s 0 0 137602.086 0 11 138111.000 137602.086 0.37% - 23s 0 0 137602.086 0 11 138111.000 137602.086 0.37% - 23s 0 2 137607.221 0 11 138111.000 137607.221 0.36% - 25s Cutting planes: Gomory: 3 Flow cover: 14 Explored 69 nodes (39682 simplex iterations) in 29.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.381110000000e+05, best bound 1.381110000000e+05, gap 0.0%