Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:17:17 2012 Optimize a model with 59295 rows, 47742 columns and 224538 nonzeros Presolve removed 438 rows and 2 columns Presolve time: 4.60s Presolved: 59075 rows, 47740 columns, 270432 nonzeros Variable types: 0 continuous, 47740 integer (47740 binary) Found heuristic solution: objective 218.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 32847 3.0001302e+00 4.260000e+02 0.000000e+00 5s 40438 3.0001571e+00 2.452937e+02 0.000000e+00 10s 43681 3.0001653e+00 1.579303e+02 0.000000e+00 15s 46783 3.0001710e+00 1.212292e+01 0.000000e+00 20s 50026 3.0001773e+00 3.782858e+01 0.000000e+00 25s 53269 3.0001841e+00 2.683046e+02 0.000000e+00 30s 56653 3.0001907e+00 1.088018e+01 0.000000e+00 35s 59755 3.0001955e+00 2.168031e+02 0.000000e+00 40s 62857 3.0001995e+00 9.511837e+00 0.000000e+00 45s 65959 3.0002026e+00 1.928850e+01 0.000000e+00 50s 66677 3.0000000e+00 0.000000e+00 0.000000e+00 51s Root relaxation: objective 3.000000e+00, 66677 iterations, 51.19 seconds 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% - 88s Explored 0 nodes (99636 simplex iterations) in 88.38 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%