Gurobi 5.0.1 (linux64) logging started Sun Dec 2 09:59:48 2012 Optimize a model with 197134 rows, 196249 columns and 1175720 nonzeros Presolve removed 442 rows and 1 columns (presolve time = 5s) ... Presolve removed 442 rows and 1 columns Presolve time: 6.78s Presolved: 196692 rows, 196248 columns, 1173952 nonzeros Variable types: 442 continuous, 195806 integer (195806 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7789 2.7200002e+03 0.000000e+00 0.000000e+00 6s Root relaxation: objective 2.720000e+03, 7789 iterations, 5.55 seconds Total elapsed time = 36.52s Total elapsed time = 51.71s Total elapsed time = 64.69s Total elapsed time = 72.83s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2720.00000 0 19 - 2720.00000 - - 74s H 0 0 3055.0000000 2720.00000 11.0% - 78s H 0 0 2720.0000000 2720.00000 0.0% - 85s Explored 0 nodes (25214 simplex iterations) in 85.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.720000000000e+03, best bound 2.720000000000e+03, gap 0.0%