Gurobi 5.0.1 (linux64) logging started Wed Apr 24 06:53:10 2013 Optimize a model with 87513 rows, 86583 columns and 346053 nonzeros Presolve removed 7566 rows and 0 columns Presolve time: 0.62s Presolved: 79947 rows, 86583 columns, 330921 nonzeros Variable types: 86490 continuous, 93 integer (93 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 17126 1.0651304e+05 3.148890e+03 0.000000e+00 5s 18789 1.0707304e+05 0.000000e+00 0.000000e+00 6s Root relaxation: objective 1.070730e+05, 18789 iterations, 6.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 107073.035 0 3 - 107073.035 - - 6s H 0 0 107364.00000 107073.035 0.27% - 7s H 0 0 107257.00000 107073.035 0.17% - 7s 0 0 107073.314 0 4 107257.000 107073.314 0.17% - 8s 0 0 107073.314 0 3 107257.000 107073.314 0.17% - 11s 0 0 107073.466 0 5 107257.000 107073.466 0.17% - 11s 0 0 107073.474 0 5 107257.000 107073.474 0.17% - 12s 0 0 107073.642 0 4 107257.000 107073.642 0.17% - 13s 0 2 107077.359 0 4 107257.000 107077.359 0.17% - 14s 2 2 107180.911 1 3 107257.000 107180.911 0.07% 248 15s Cutting planes: Gomory: 2 Flow cover: 6 Explored 5 nodes (26267 simplex iterations) in 15.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.072570000000e+05, best bound 1.072570000000e+05, gap 0.0%