Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:52:48 2012 Optimize a model with 55439 rows, 48620 columns and 213838 nonzeros Presolve removed 2642 rows and 2 columns Presolve time: 1.51s Presolved: 53017 rows, 48618 columns, 255158 nonzeros Variable types: 0 continuous, 48618 integer (48618 binary) Found heuristic solution: objective 220.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 24056 3.0000827e+00 1.783673e+01 0.000000e+00 5s 27942 3.0000853e+00 1.314058e+02 0.000000e+00 10s 31560 3.0000888e+00 2.702738e+01 0.000000e+00 15s 35178 3.0000919e+00 1.900152e+02 0.000000e+00 20s 38528 3.0000956e+00 7.777139e+00 0.000000e+00 25s 41878 3.0001002e+00 1.117999e+01 0.000000e+00 30s 43593 3.0000000e+00 0.000000e+00 0.000000e+00 33s Root relaxation: objective 3.000000e+00, 43593 iterations, 33.07 seconds Total elapsed time = 80.81s Total elapsed time = 92.70s 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% - 94s Explored 0 nodes (146866 simplex iterations) in 94.91 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%