Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:43:11 2012 Optimize a model with 42217 rows, 41006 columns and 166648 nonzeros Presolve removed 1012 rows and 2 columns Presolve time: 1.12s Presolved: 41407 rows, 41004 columns, 204620 nonzeros Variable types: 0 continuous, 41004 integer (41004 binary) Found heuristic solution: objective 202.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 25332 3.0000772e+00 5.200000e+01 0.000000e+00 5s 28117 3.0000000e+00 0.000000e+00 0.000000e+00 7s Root relaxation: objective 3.000000e+00, 28117 iterations, 7.21 seconds Total elapsed time = 23.25s Total elapsed time = 27.82s Total elapsed time = 31.13s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 31s Explored 0 nodes (97280 simplex iterations) in 31.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%