Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:41:37 2012 Optimize a model with 48278 rows, 43890 columns and 187680 nonzeros Presolve removed 436 rows and 3346 columns Presolve time: 1.18s Presolved: 47842 rows, 40544 columns, 182833 nonzeros Variable types: 0 continuous, 40544 integer (40544 binary) Found heuristic solution: objective 209.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 26779 3.0000825e+00 2.208919e+02 0.000000e+00 5s 31819 3.0000000e+00 0.000000e+00 0.000000e+00 9s Root relaxation: objective 3.000000e+00, 31819 iterations, 9.04 seconds Total elapsed time = 25.81s Total elapsed time = 31.84s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 57 209.00000 3.00000 98.6% - 32s H 0 0 3.0000000 3.00000 0.0% - 32s Explored 0 nodes (89786 simplex iterations) in 32.26 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%