Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:44:16 2013 Optimize a model with 693 rows, 39753 columns and 79443 nonzeros Presolve time: 0.06s Presolved: 693 rows, 39753 columns, 79443 nonzeros Variable types: 39690 continuous, 63 integer (63 binary) Root relaxation: objective 7.470935e+04, 1600 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 74709.3465 0 9 - 74709.3465 - - 0s H 0 0 80155.000000 74709.3465 6.79% - 0s H 0 0 75435.000000 74709.3465 0.96% - 0s 0 0 75195.8052 0 7 75435.0000 75195.8052 0.32% - 0s 0 0 75258.1503 0 7 75435.0000 75258.1503 0.23% - 0s 0 0 75258.1503 0 9 75435.0000 75258.1503 0.23% - 0s 0 0 75258.1503 0 7 75435.0000 75258.1503 0.23% - 0s 0 0 75262.2352 0 7 75435.0000 75262.2352 0.23% - 0s 0 0 75283.7641 0 5 75435.0000 75283.7641 0.20% - 0s 0 0 75290.8983 0 5 75435.0000 75290.8983 0.19% - 0s 0 0 75294.5380 0 4 75435.0000 75294.5380 0.19% - 0s 0 0 75295.5563 0 4 75435.0000 75295.5563 0.18% - 0s 0 0 75295.5563 0 4 75435.0000 75295.5563 0.18% - 0s 0 0 75295.5563 0 4 75435.0000 75295.5563 0.18% - 0s 0 0 75298.1019 0 3 75435.0000 75298.1019 0.18% - 1s 0 2 75300.7702 0 3 75435.0000 75300.7702 0.18% - 1s H 5 1 75418.428571 75348.0168 0.09% 36.4 1s * 6 2 4 75364.000000 75348.0168 0.02% 33.2 1s * 7 1 4 75363.000000 75348.0168 0.02% 30.0 1s Cutting planes: Implied bound: 91 Flow cover: 2 Explored 10 nodes (3802 simplex iterations) in 1.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.536300000000e+04, best bound 7.535746291560e+04, gap 0.0073%