Gurobi 5.0.1 (linux64) logging started Sat Nov 17 05:13:57 2012 Optimize a model with 59051 rows, 52212 columns and 228226 nonzeros Presolve removed 626 rows and 5930 columns Presolve time: 1.59s Presolved: 58425 rows, 46282 columns, 220293 nonzeros Variable types: 0 continuous, 46282 integer (46282 binary) Found heuristic solution: objective 228.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 28557 3.0000895e+00 2.312651e+01 0.000000e+00 5s 32897 3.0000925e+00 1.783549e+02 0.000000e+00 10s 36817 3.0000955e+00 1.036434e+02 0.000000e+00 15s 40597 3.0000988e+00 2.537475e+01 0.000000e+00 20s 44237 3.0001024e+00 2.087667e+01 0.000000e+00 25s 47514 3.0000000e+00 0.000000e+00 0.000000e+00 29s Root relaxation: objective 3.000000e+00, 47514 iterations, 28.80 seconds Total elapsed time = 78.26s Total elapsed time = 82.20s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 64 228.00000 3.00000 98.7% - 85s H 0 0 3.0000000 3.00000 0.0% - 85s Explored 0 nodes (129057 simplex iterations) in 85.19 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%