Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:25:05 2013 Optimize a model with 781 rows, 50481 columns and 100891 nonzeros Presolve time: 0.07s Presolved: 781 rows, 50481 columns, 100891 nonzeros Variable types: 50410 continuous, 71 integer (71 binary) Root relaxation: objective 6.856979e+04, 1714 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 68569.7915 0 9 - 68569.7915 - - 0s H 0 0 73768.000000 68569.7915 7.05% - 0s 0 0 68871.9159 0 8 73768.0000 68871.9159 6.64% - 0s 0 0 68955.8834 0 6 73768.0000 68955.8834 6.52% - 0s H 0 0 73230.000000 68955.8834 5.84% - 0s 0 0 68999.2670 0 5 73230.0000 68999.2670 5.78% - 0s H 0 0 73098.000000 68999.2670 5.61% - 0s 0 0 69021.5156 0 5 73098.0000 69021.5156 5.58% - 0s H 0 0 73063.000000 69021.5156 5.53% - 0s 0 0 69026.2920 0 5 73063.0000 69026.2920 5.52% - 0s H 0 0 72281.000000 69026.2920 4.50% - 0s 0 0 69026.2920 0 5 72281.0000 69026.2920 4.50% - 0s 0 0 69026.2920 0 5 72281.0000 69026.2920 4.50% - 0s 0 0 69026.2920 0 5 72281.0000 69026.2920 4.50% - 1s 0 2 69042.2430 0 5 72281.0000 69042.2430 4.48% - 1s H 2 2 71374.759833 69056.8221 3.25% 19.0 1s H 3 3 71344.293068 69071.6369 3.19% 36.3 1s H 5 5 70909.333333 69080.8582 2.58% 40.8 1s H 6 6 69749.000000 69080.8582 0.96% 36.5 1s H 11 8 69322.000000 69080.8582 0.35% 30.5 1s H 12 7 69261.000000 69080.8582 0.26% 29.2 1s * 17 8 16 69244.000000 69080.8582 0.24% 27.5 1s * 49 6 6 69235.000000 69187.2819 0.07% 34.7 2s Cutting planes: Implied bound: 139 Flow cover: 6 Explored 59 nodes (4085 simplex iterations) in 2.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.923500000000e+04, best bound 6.923500000000e+04, gap 0.0%