Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:06:05 2013 Optimize a model with 64897 rows, 5329 columns and 197173 nonzeros Presolve removed 4109 rows and 2686 columns Presolve time: 0.51s Presolved: 60788 rows, 2643 columns, 184884 nonzeros Variable types: 36 continuous, 2607 integer (2607 binary) Found heuristic solution: objective 106453.00000 Root relaxation: objective 8.080548e+04, 17212 iterations, 1.74 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 80805.4808 0 17 106453.000 80805.4808 24.1% - 2s H 0 0 80827.000000 80805.4808 0.03% - 2s H 0 0 80818.000000 80805.4808 0.02% - 2s H 0 0 80815.000000 80805.4808 0.01% - 2s 0 0 80806.0887 0 23 80815.0000 80806.0887 0.01% - 2s 0 0 80806.0887 0 12 80815.0000 80806.0887 0.01% - 3s 0 0 80806.1367 0 31 80815.0000 80806.1367 0.01% - 3s H 0 0 80814.000000 80806.1367 0.01% - 3s Cutting planes: Gomory: 2 MIR: 5 Zero half: 1 Explored 0 nodes (19064 simplex iterations) in 3.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.081400000000e+04, best bound 8.080700000000e+04, gap 0.0087%