Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:20:13 2013 Optimize a model with 106081 rows, 7396 columns and 321726 nonzeros Presolve removed 6439 rows and 3737 columns Presolve time: 1.05s Presolved: 99642 rows, 3659 columns, 301995 nonzeros Variable types: 37 continuous, 3622 integer (3622 binary) Found heuristic solution: objective 144366.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 35808 1.0293756e+05 0.000000e+00 5.508980e+05 5s 39325 1.0316417e+05 0.000000e+00 0.000000e+00 6s 39325 1.0316417e+05 0.000000e+00 0.000000e+00 6s Root relaxation: objective 1.031642e+05, 39325 iterations, 5.78 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 103164.167 0 20 144366.000 103164.167 28.5% - 7s H 0 0 103184.00000 103164.167 0.02% - 7s H 0 0 103181.00000 103164.167 0.02% - 7s H 0 0 103177.00000 103164.167 0.01% - 7s 0 0 103164.667 0 18 103177.000 103164.667 0.01% - 8s 0 0 103164.667 0 15 103177.000 103164.667 0.01% - 8s H 0 0 103175.00000 103164.667 0.01% - 8s 0 0 103164.667 0 29 103175.000 103164.667 0.01% - 9s 0 2 103164.667 0 22 103175.000 103164.667 0.01% - 9s 11 9 103164.667 0 44 103175.000 103164.667 0.01% 14.2 10s Cutting planes: Gomory: 3 MIR: 20 Zero half: 7 Explored 37 nodes (54880 simplex iterations) in 11.51 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.031750000000e+05, best bound 1.031650000000e+05, gap 0.0097%