Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:04:49 2013 Optimize a model with 300 rows, 3110 columns and 22280 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.03s Presolved: 290 rows, 3100 columns, 20270 nonzeros Variable types: 3020 continuous, 80 integer (80 binary) Root relaxation: objective 1.997658e+04, 118 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 19976.5790 0 6 - 19976.5790 - - 0s 0 0 19977.1629 0 6 - 19977.1629 - - 0s 0 0 19990.9913 0 6 - 19990.9913 - - 0s 0 0 19990.9913 0 6 - 19990.9913 - - 0s 0 2 19991.7628 0 6 - 19991.7628 - - 0s * 12 7 10 20219.651026 20038.2603 0.90% 12.7 0s H 27 10 20180.614804 20102.7257 0.39% 7.6 0s * 50 7 11 20158.967754 20151.8396 0.04% 5.4 0s * 66 7 11 20158.535950 20153.0019 0.03% 4.6 0s Cutting planes: Flow cover: 1 Explored 70 nodes (632 simplex iterations) in 0.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.015853595010e+04, best bound 2.015714233122e+04, gap 0.0069%