Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:56:20 2013 Optimize a model with 366275 rows, 16900 columns and 1106950 nonzeros Presolve removed 23244 rows and 8585 columns (presolve time = 5s) ... Presolve removed 23244 rows and 8585 columns Presolve time: 5.83s Presolved: 343031 rows, 8315 columns, 1035313 nonzeros Variable types: 49 continuous, 8266 integer (8266 binary) Found heuristic solution: objective 380413.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 12390 2.6300597e+05 0.000000e+00 1.566136e+08 5s 31389 2.7020412e+05 0.000000e+00 2.043224e+09 10s 52039 2.7971275e+05 0.000000e+00 3.940517e+07 15s 69391 2.9302972e+05 0.000000e+00 1.234195e+05 20s 69756 2.9318870e+05 0.000000e+00 0.000000e+00 21s 69756 2.9318870e+05 0.000000e+00 0.000000e+00 21s Root relaxation: objective 2.931887e+05, 69756 iterations, 20.87 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 293188.696 0 11 380413.000 293188.696 22.9% - 28s H 0 0 293197.00000 293188.696 0.00% - 28s Explored 0 nodes (69853 simplex iterations) in 28.80 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.931970000000e+05, best bound 2.931890000000e+05, gap 0.0027%