Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:09:10 2012 Optimize a model with 48789 rows, 42230 columns and 187573 nonzeros Presolve removed 412 rows and 2 columns Presolve time: 1.18s Presolved: 48582 rows, 42228 columns, 228101 nonzeros Variable types: 0 continuous, 42228 integer (42228 binary) Found heuristic solution: objective 205.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 34694 3.0000804e+00 5.460465e+01 0.000000e+00 5s 41789 3.0000831e+00 1.879284e+01 0.000000e+00 10s 46424 3.0000000e+00 0.000000e+00 0.000000e+00 14s Root relaxation: objective 3.000000e+00, 46424 iterations, 14.28 seconds Total elapsed time = 41.02s 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% - 43s Explored 0 nodes (109044 simplex iterations) in 43.18 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%