Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:50:16 2013 Optimize a model with 2320 rows, 8060 columns and 22100 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.15s Presolved: 2300 rows, 8040 columns, 20080 nonzeros Variable types: 6040 continuous, 2000 integer (2000 binary) Root relaxation: objective 4.636776e+04, 591 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46367.7551 0 4 - 46367.7551 - - 0s 0 0 46428.3313 0 4 - 46428.3313 - - 0s 0 0 46431.4920 0 6 - 46431.4920 - - 0s 0 0 46437.8970 0 4 - 46437.8970 - - 0s 0 0 46444.6385 0 6 - 46444.6385 - - 0s 0 0 46448.8945 0 4 - 46448.8945 - - 0s 0 0 46452.9815 0 7 - 46452.9815 - - 0s 0 0 46453.7180 0 4 - 46453.7180 - - 0s 0 0 46454.1943 0 7 - 46454.1943 - - 0s 0 0 46454.7983 0 7 - 46454.7983 - - 0s 0 0 46455.7172 0 9 - 46455.7172 - - 0s 0 0 46456.8045 0 7 - 46456.8045 - - 0s 0 0 46457.4144 0 4 - 46457.4144 - - 0s 0 0 46457.8804 0 8 - 46457.8804 - - 0s 0 0 46458.1284 0 8 - 46458.1284 - - 0s 0 0 46458.1284 0 8 - 46458.1284 - - 0s 0 2 46458.1284 0 8 - 46458.1284 - - 1s * 20 8 10 46653.827166 46653.6516 0.00% 39.6 1s Cutting planes: Gomory: 3 Implied bound: 27 Flow cover: 2 Explored 21 nodes (1748 simplex iterations) in 1.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.665382716636e+04, best bound 4.665365160723e+04, gap 0.0004%