Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:16:15 2012 Optimize a model with 44701 rows, 42642 columns and 175716 nonzeros Presolve removed 414 rows and 2 columns Presolve time: 1.13s Presolved: 44493 rows, 42640 columns, 216692 nonzeros Variable types: 0 continuous, 42640 integer (42640 binary) Found heuristic solution: objective 206.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 27721 3.0000806e+00 2.525000e+01 0.000000e+00 5s 32929 3.0000849e+00 7.504274e+00 0.000000e+00 10s 36236 3.0000000e+00 0.000000e+00 0.000000e+00 13s Root relaxation: objective 3.000000e+00, 36236 iterations, 13.39 seconds Total elapsed time = 34.58s 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% - 34s Explored 0 nodes (75972 simplex iterations) in 34.97 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%