Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:44:23 2012 Optimize a model with 47267 rows, 41006 columns and 181798 nonzeros Presolve removed 1618 rows and 2 columns Presolve time: 1.28s Presolved: 45851 rows, 41004 columns, 218110 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 26995 3.0000799e+00 2.683333e+01 0.000000e+00 5s 32174 3.0000000e+00 0.000000e+00 0.000000e+00 10s Root relaxation: objective 3.000000e+00, 32174 iterations, 9.97 seconds Total elapsed time = 26.17s 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% - 28s Explored 0 nodes (72130 simplex iterations) in 28.79 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%