Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:38:37 2013 Optimize a model with 152193 rows, 9409 columns and 461041 nonzeros Presolve removed 7333 rows and 4727 columns Presolve time: 1.79s Presolved: 144860 rows, 4682 columns, 439652 nonzeros Variable types: 54 continuous, 4628 integer (4628 binary) Found heuristic solution: objective 195056.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 21162 1.1166959e+05 0.000000e+00 2.005795e+08 5s 40989 1.1796456e+05 0.000000e+00 9.258750e+07 10s 67583 1.2642868e+05 0.000000e+00 1.701444e+08 15s 83660 1.3554993e+05 0.000000e+00 0.000000e+00 18s 83660 1.3554993e+05 0.000000e+00 0.000000e+00 18s Root relaxation: objective 1.355499e+05, 83660 iterations, 17.84 seconds Total elapsed time = 20.06s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 135549.929 0 16 195056.000 135549.929 30.5% - 20s H 0 0 135562.00000 135549.929 0.01% - 20s Explored 0 nodes (83933 simplex iterations) in 20.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.355620000000e+05, best bound 1.355500000000e+05, gap 0.0089%