Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:03:40 2013 Optimize a model with 45694 rows, 45024 columns and 179694 nonzeros Presolve removed 67 rows and 0 columns Presolve time: 0.20s Presolved: 45627 rows, 45024 columns, 179627 nonzeros Variable types: 44957 continuous, 67 integer (67 binary) Root relaxation: objective 6.087419e+04, 6720 iterations, 4.34 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 60874.1928 0 53 - 60874.1928 - - 4s H 0 0 97409.000000 60874.1928 37.5% - 6s 0 0 76813.2053 0 16 97409.0000 76813.2053 21.1% - 13s H 0 0 95165.733098 76813.2053 19.3% - 13s H 0 0 86707.000000 76813.2053 11.4% - 13s 0 0 79966.7953 0 7 86707.0000 79966.7953 7.77% - 15s 0 0 80309.5190 0 5 86707.0000 80309.5190 7.38% - 15s H 0 0 85537.438388 80309.5190 6.11% - 15s H 0 0 83273.000000 80309.5190 3.56% - 15s H 0 0 81153.007669 80309.5190 1.04% - 16s H 0 0 81042.394547 80309.5190 0.90% - 17s H 0 0 80752.000000 80309.5190 0.55% - 17s 0 2 80321.3973 0 5 80752.0000 80321.3973 0.53% - 17s * 9 5 6 80690.000000 80577.6511 0.14% 185 18s * 14 4 5 80651.000000 80590.1297 0.08% 147 18s Cutting planes: Implied bound: 66 Explored 19 nodes (15594 simplex iterations) in 18.90 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.065100000000e+04, best bound 8.065100000000e+04, gap 0.0%