Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:54:09 2012 Optimize a model with 49247 rows, 46872 columns and 193534 nonzeros Presolve removed 434 rows and 2 columns Presolve time: 1.23s Presolved: 49029 rows, 46870 columns, 238658 nonzeros Variable types: 0 continuous, 46870 integer (46870 binary) Found heuristic solution: objective 216.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 34935 3.0000746e+00 2.244444e+01 0.000000e+00 5s 40285 3.0000807e+00 1.583640e+02 0.000000e+00 10s 44705 3.0000852e+00 2.970396e+01 0.000000e+00 15s 49125 3.0000894e+00 2.961814e+00 0.000000e+00 20s 50092 3.0000000e+00 0.000000e+00 0.000000e+00 21s Root relaxation: objective 3.000000e+00, 50092 iterations, 21.04 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% - 39s Explored 0 nodes (81729 simplex iterations) in 39.76 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%