Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:17:18 2012 Optimize a model with 50031 rows, 45156 columns and 194190 nonzeros Presolve removed 1293 rows and 4030 columns Presolve time: 1.27s Presolved: 48738 rows, 41126 columns, 186522 nonzeros Variable types: 0 continuous, 41126 integer (41126 binary) Found heuristic solution: objective 212.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 30741 3.0000835e+00 3.600000e+01 0.000000e+00 5s 36417 3.0000857e+00 4.290416e+00 0.000000e+00 10s 38074 3.0000000e+00 0.000000e+00 0.000000e+00 12s Root relaxation: objective 3.000000e+00, 38074 iterations, 11.65 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% - 30s Explored 0 nodes (76014 simplex iterations) in 30.75 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%