Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:33:58 2013 Optimize a model with 660 rows, 36060 columns and 72060 nonzeros Presolve time: 0.05s Presolved: 660 rows, 36060 columns, 72060 nonzeros Variable types: 36000 continuous, 60 integer (60 binary) Root relaxation: objective 7.236274e+04, 1652 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 72362.7389 0 6 - 72362.7389 - - 0s H 0 0 74834.000000 72362.7389 3.30% - 0s H 0 0 73157.000000 72362.7389 1.09% - 0s 0 0 72471.2181 0 5 73157.0000 72471.2181 0.94% - 0s 0 0 72477.6298 0 4 73157.0000 72477.6298 0.93% - 0s 0 0 72482.8357 0 6 73157.0000 72482.8357 0.92% - 0s 0 0 72485.3872 0 6 73157.0000 72485.3872 0.92% - 0s 0 0 72485.6255 0 5 73157.0000 72485.6255 0.92% - 0s H 0 0 72699.000000 72485.6255 0.29% - 0s 0 0 72485.6255 0 4 72699.0000 72485.6255 0.29% - 0s 0 0 72519.6473 0 3 72699.0000 72519.6473 0.25% - 0s 0 0 72530.5866 0 3 72699.0000 72530.5866 0.23% - 0s 0 0 72534.9240 0 2 72699.0000 72534.9240 0.23% - 0s 0 0 72534.9240 0 2 72699.0000 72534.9240 0.23% - 0s 0 0 72536.2380 0 3 72699.0000 72536.2380 0.22% - 0s 0 0 72536.6831 0 2 72699.0000 72536.6831 0.22% - 0s 0 0 72628.3125 0 1 72699.0000 72628.3125 0.10% - 1s H 0 0 72635.000000 72628.3125 0.01% - 1s Cutting planes: Implied bound: 23 Flow cover: 2 Explored 0 nodes (3166 simplex iterations) in 1.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.263500000000e+04, best bound 7.262831250000e+04, gap 0.0092%