Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:07:39 2013 Optimize a model with 528 rows, 23088 columns and 46128 nonzeros Presolve time: 0.03s Presolved: 528 rows, 23088 columns, 46128 nonzeros Variable types: 23040 continuous, 48 integer (48 binary) Root relaxation: objective 5.172229e+04, 841 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 51722.2923 0 13 - 51722.2923 - - 0s H 0 0 54618.000000 51722.2923 5.30% - 0s H 0 0 52790.000000 51722.2923 2.02% - 0s 0 0 52362.6183 0 12 52790.0000 52362.6183 0.81% - 0s 0 0 52448.7357 0 9 52790.0000 52448.7357 0.65% - 0s 0 0 52456.3367 0 7 52790.0000 52456.3367 0.63% - 0s 0 0 52465.6872 0 7 52790.0000 52465.6872 0.61% - 0s 0 0 52467.9503 0 5 52790.0000 52467.9503 0.61% - 0s 0 0 52467.9503 0 5 52790.0000 52467.9503 0.61% - 0s 0 0 52468.1897 0 5 52790.0000 52468.1897 0.61% - 0s H 0 0 52589.000000 52468.1897 0.23% - 0s 0 0 52468.1897 0 13 52589.0000 52468.1897 0.23% - 0s 0 0 52468.1897 0 12 52589.0000 52468.1897 0.23% - 0s 0 0 52468.1897 0 10 52589.0000 52468.1897 0.23% - 0s 0 0 52468.1897 0 6 52589.0000 52468.1897 0.23% - 0s 0 0 52468.1897 0 8 52589.0000 52468.1897 0.23% - 0s 0 0 52468.1897 0 5 52589.0000 52468.1897 0.23% - 0s 0 0 52468.1897 0 5 52589.0000 52468.1897 0.23% - 0s 0 0 52468.1897 0 5 52589.0000 52468.1897 0.23% - 0s 0 2 52468.7801 0 5 52589.0000 52468.7801 0.23% - 0s * 10 5 9 52560.000000 52523.0697 0.07% 26.8 0s Cutting planes: Implied bound: 111 Flow cover: 5 Explored 17 nodes (2743 simplex iterations) in 0.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.256000000000e+04, best bound 5.256000000000e+04, gap 0.0%