Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:20:37 2013 Optimize a model with 605 rows, 30305 columns and 60555 nonzeros Presolve time: 0.04s Presolved: 605 rows, 30305 columns, 60555 nonzeros Variable types: 30250 continuous, 55 integer (55 binary) Root relaxation: objective 6.688354e+04, 1650 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 66883.5357 0 9 - 66883.5357 - - 0s H 0 0 72400.000000 66883.5357 7.62% - 0s H 0 0 67387.000000 66883.5357 0.75% - 0s 0 0 67180.4704 0 6 67387.0000 67180.4704 0.31% - 0s 0 0 67188.9069 0 4 67387.0000 67188.9069 0.29% - 0s 0 0 67191.3196 0 3 67387.0000 67191.3196 0.29% - 0s 0 0 67191.3196 0 3 67387.0000 67191.3196 0.29% - 0s 0 0 67212.8749 0 5 67387.0000 67212.8749 0.26% - 0s 0 0 67215.5728 0 3 67387.0000 67215.5728 0.25% - 0s H 0 0 67324.000000 67215.5728 0.16% - 0s 0 0 67215.5728 0 7 67324.0000 67215.5728 0.16% - 0s H 0 0 67268.000000 67215.5728 0.08% - 0s 0 0 67226.3636 0 1 67268.0000 67226.3636 0.06% - 0s 0 0 67246.3286 0 2 67268.0000 67246.3286 0.03% - 0s 0 0 67257.1176 0 1 67268.0000 67257.1176 0.02% - 0s 0 0 67257.1176 0 1 67268.0000 67257.1176 0.02% - 0s 0 0 67258.6345 0 2 67268.0000 67258.6345 0.01% - 0s 0 0 67263.2842 0 1 67268.0000 67263.2842 0.01% - 0s Cutting planes: Implied bound: 25 Flow cover: 1 Explored 0 nodes (3224 simplex iterations) in 0.83 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.726800000000e+04, best bound 6.726328421053e+04, gap 0.0070%