Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:24:14 2012 Optimize a model with 45125 rows, 43056 columns and 177397 nonzeros Presolve removed 830 rows and 2 columns Presolve time: 1.09s Presolved: 44502 rows, 43054 columns, 217748 nonzeros Variable types: 0 continuous, 43054 integer (43054 binary) Found heuristic solution: objective 207.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 31074 3.0000874e+00 2.424244e+01 0.000000e+00 5s 35662 3.0000928e+00 1.586949e+01 0.000000e+00 10s 40504 3.0000000e+00 0.000000e+00 0.000000e+00 15s Root relaxation: objective 3.000000e+00, 40504 iterations, 15.02 seconds Total elapsed time = 45.87s Total elapsed time = 51.03s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 80 207.00000 3.00000 98.6% - 52s H 0 0 3.0000000 3.00000 0.0% - 52s Explored 0 nodes (100217 simplex iterations) in 52.21 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%