Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:59:02 2012 Optimize a model with 49979 rows, 44310 columns and 193198 nonzeros Presolve removed 422 rows and 2 columns Presolve time: 1.27s Presolved: 49767 rows, 44308 columns, 235776 nonzeros Variable types: 0 continuous, 44308 integer (44308 binary) Found heuristic solution: objective 210.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 30507 3.0000778e+00 5.990833e+01 0.000000e+00 5s 35967 3.0000832e+00 4.067273e+01 0.000000e+00 10s 39997 3.0000867e+00 9.887744e+01 0.000000e+00 15s 44157 3.0000903e+00 1.854185e+01 0.000000e+00 20s 47561 3.0000000e+00 0.000000e+00 0.000000e+00 24s Root relaxation: objective 3.000000e+00, 47561 iterations, 24.16 seconds Total elapsed time = 44.55s Total elapsed time = 46.62s 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% - 48s Explored 0 nodes (105793 simplex iterations) in 48.59 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%