Gurobi 5.0.1 (linux64) logging started Sat Dec 8 02:35:16 2012 Optimize a model with 825 rows, 810 columns and 2964 nonzeros Presolve removed 94 rows and 21 columns Presolve time: 0.00s Presolved: 731 rows, 789 columns, 2761 nonzeros Variable types: 704 continuous, 85 integer (85 binary) Root relaxation: objective 3.059026e+04, 132 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 30590.2631 0 7 - 30590.2631 - - 0s H 0 0 31681.000000 30590.2631 3.44% - 0s H 0 0 30965.000000 30590.2631 1.21% - 0s 0 0 30727.0081 0 8 30965.0000 30727.0081 0.77% - 0s 0 0 30727.0081 0 2 30965.0000 30727.0081 0.77% - 0s H 0 0 30945.000000 30727.0081 0.70% - 0s 0 0 30803.1631 0 7 30945.0000 30803.1631 0.46% - 0s 0 0 30803.5568 0 7 30945.0000 30803.5568 0.46% - 0s 0 0 30804.9872 0 10 30945.0000 30804.9872 0.45% - 0s H 0 0 30881.000000 30804.9872 0.25% - 0s 0 2 30807.4937 0 10 30881.0000 30807.4937 0.24% - 0s * 5 0 2 30875.000000 30875.0000 0.0% 2.6 0s Cutting planes: Gomory: 3 Flow cover: 2 Explored 6 nodes (252 simplex iterations) in 0.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.087500000000e+04, best bound 3.087500000000e+04, gap 0.0%