Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:16:05 2012 Optimize a model with 55119 rows, 45156 columns and 209454 nonzeros Presolve removed 2141 rows and 4030 columns Presolve time: 3.73s Presolved: 52978 rows, 41126 columns, 199626 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 25253 3.0000849e+00 5.837730e+01 0.000000e+00 5s 29407 3.0000890e+00 1.331483e+01 0.000000e+00 10s 33695 3.0000937e+00 2.358599e+01 0.000000e+00 15s 37983 3.0001017e+00 1.739243e+01 0.000000e+00 20s 39189 3.0000000e+00 0.000000e+00 0.000000e+00 21s Root relaxation: objective 3.000000e+00, 39189 iterations, 21.46 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% - 58s Explored 0 nodes (84225 simplex iterations) in 58.83 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%