Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:10:39 2013 Optimize a model with 550 rows, 25050 columns and 50050 nonzeros Presolve time: 0.03s Presolved: 550 rows, 25050 columns, 50050 nonzeros Variable types: 25000 continuous, 50 integer (50 binary) Root relaxation: objective 6.616928e+04, 1526 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 66169.2770 0 6 - 66169.2770 - - 0s H 0 0 67361.000000 66169.2770 1.77% - 0s 0 0 66513.4639 0 4 67361.0000 66513.4639 1.26% - 0s H 0 0 66947.000000 66513.4639 0.65% - 0s 0 0 66565.4181 0 2 66947.0000 66565.4181 0.57% - 0s H 0 0 66721.171633 66565.4181 0.23% - 0s H 0 0 66639.000000 66565.4181 0.11% - 0s 0 0 66567.3234 0 3 66639.0000 66567.3234 0.11% - 0s 0 0 66570.6151 0 2 66639.0000 66570.6151 0.10% - 0s 0 0 66570.6429 0 1 66639.0000 66570.6429 0.10% - 0s 0 0 66570.6429 0 1 66639.0000 66570.6429 0.10% - 0s 0 0 66570.6429 0 5 66639.0000 66570.6429 0.10% - 0s 0 0 66570.6429 0 5 66639.0000 66570.6429 0.10% - 0s 0 0 66570.6429 0 2 66639.0000 66570.6429 0.10% - 0s 0 0 66570.6429 0 4 66639.0000 66570.6429 0.10% - 0s 0 0 66570.6429 0 3 66639.0000 66570.6429 0.10% - 0s H 0 0 66631.000000 66570.6429 0.09% - 0s 0 0 66570.6429 0 2 66631.0000 66570.6429 0.09% - 0s 0 0 66570.6429 0 2 66631.0000 66570.6429 0.09% - 0s 0 0 66570.6429 0 1 66631.0000 66570.6429 0.09% - 0s 0 0 66592.5455 0 1 66631.0000 66592.5455 0.06% - 0s 0 0 66599.7850 0 1 66631.0000 66599.7850 0.05% - 0s * 0 0 0 66607.000000 66607.0000 0.0% - 0s Cutting planes: Implied bound: 46 Flow cover: 1 Explored 0 nodes (3227 simplex iterations) in 0.83 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.660700000000e+04, best bound 6.660700000000e+04, gap 0.0%