Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:37:01 2012 Optimize a model with 48255 rows, 43472 columns and 187198 nonzeros Presolve removed 418 rows and 2 columns Presolve time: 1.15s Presolved: 48045 rows, 43470 columns, 228962 nonzeros Variable types: 0 continuous, 43470 integer (43470 binary) Found heuristic solution: objective 208.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 30117 3.0000852e+00 4.790842e+03 0.000000e+00 5s 35237 3.0000910e+00 3.611936e+01 0.000000e+00 10s 40101 3.0000953e+00 2.454929e+02 0.000000e+00 15s 44965 3.0000997e+00 1.681927e+01 0.000000e+00 20s 48710 3.0000000e+00 0.000000e+00 0.000000e+00 24s Root relaxation: objective 3.000000e+00, 48710 iterations, 24.02 seconds Total elapsed time = 48.01s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 40 208.00000 3.00000 98.6% - 49s H 0 0 3.0000000 3.00000 0.0% - 49s Explored 0 nodes (103548 simplex iterations) in 49.52 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%