Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:04:45 2013 Optimize a model with 2160 rows, 5030 columns and 16050 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.27s Presolved: 2150 rows, 5020 columns, 14040 nonzeros Variable types: 3020 continuous, 2000 integer (2000 binary) Root relaxation: objective 1.836170e+04, 153 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 18361.7044 0 2 - 18361.7044 - - 0s 0 0 18369.6790 0 4 - 18369.6790 - - 0s 0 0 18371.3445 0 2 - 18371.3445 - - 0s 0 0 18373.8659 0 6 - 18373.8659 - - 0s 0 0 18375.8800 0 4 - 18375.8800 - - 0s 0 0 18376.9709 0 6 - 18376.9709 - - 0s 0 0 18378.9587 0 5 - 18378.9587 - - 0s 0 0 18379.8225 0 4 - 18379.8225 - - 0s 0 0 18380.0592 0 10 - 18380.0592 - - 0s 0 0 18381.3786 0 4 - 18381.3786 - - 0s 0 0 18381.5034 0 11 - 18381.5034 - - 0s 0 0 18382.1689 0 5 - 18382.1689 - - 0s 0 0 18382.6998 0 15 - 18382.6998 - - 0s 0 0 18383.5604 0 11 - 18383.5604 - - 0s 0 0 18383.6402 0 15 - 18383.6402 - - 0s 0 0 18383.9955 0 12 - 18383.9955 - - 0s 0 0 18384.0472 0 2 - 18384.0472 - - 0s 0 0 18384.0636 0 13 - 18384.0636 - - 0s 0 0 18384.1319 0 10 - 18384.1319 - - 0s 0 0 18384.1937 0 11 - 18384.1937 - - 0s 0 0 18384.4432 0 15 - 18384.4432 - - 0s 0 0 18385.0200 0 14 - 18385.0200 - - 0s 0 0 18385.0934 0 12 - 18385.0934 - - 0s 0 0 18385.1512 0 2 - 18385.1512 - - 0s 0 0 18385.1568 0 11 - 18385.1568 - - 0s 0 0 18385.1724 0 11 - 18385.1724 - - 0s 0 0 18385.1724 0 11 - 18385.1724 - - 0s 0 2 18385.1724 0 11 - 18385.1724 - - 1s * 33 5 17 18418.266230 18418.2586 0.00% 31.8 1s Cutting planes: Gomory: 2 Implied bound: 42 Flow cover: 6 Explored 34 nodes (1543 simplex iterations) in 1.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.841826622999e+04, best bound 1.841825859523e+04, gap 0.0000%