Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:38:59 2013 Optimize a model with 803 rows, 53363 columns and 106653 nonzeros Presolve time: 0.08s Presolved: 803 rows, 53363 columns, 106653 nonzeros Variable types: 53290 continuous, 73 integer (73 binary) Root relaxation: objective 7.301271e+04, 1925 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 73012.7093 0 7 - 73012.7093 - - 0s H 0 0 77966.000000 73012.7093 6.35% - 0s 0 0 73318.7799 0 4 77966.0000 73318.7799 5.96% - 0s H 0 0 77426.297051 73318.7799 5.31% - 0s H 0 0 76484.000000 73318.7799 4.14% - 0s 0 0 73337.0422 0 3 76484.0000 73337.0422 4.11% - 0s 0 0 73343.7546 0 2 76484.0000 73343.7546 4.11% - 0s H 0 0 75426.571712 73343.7546 2.76% - 0s H 0 0 74992.000000 73343.7546 2.20% - 0s 0 0 73344.6803 0 4 74992.0000 73344.6803 2.20% - 0s 0 0 73349.0501 0 3 74992.0000 73349.0501 2.19% - 0s 0 0 73349.1480 0 2 74992.0000 73349.1480 2.19% - 0s H 0 0 74857.000000 73349.1480 2.01% - 0s 0 0 73349.1480 0 2 74857.0000 73349.1480 2.01% - 0s H 0 0 73491.000000 73349.1480 0.19% - 1s 0 0 73349.5335 0 2 73491.0000 73349.5335 0.19% - 1s 0 0 73349.5335 0 7 73491.0000 73349.5335 0.19% - 1s 0 0 73349.5335 0 4 73491.0000 73349.5335 0.19% - 1s 0 0 73349.5335 0 3 73491.0000 73349.5335 0.19% - 1s 0 0 73349.5335 0 2 73491.0000 73349.5335 0.19% - 1s 0 0 73349.5335 0 4 73491.0000 73349.5335 0.19% - 1s 0 0 73349.5335 0 3 73491.0000 73349.5335 0.19% - 1s 0 0 73349.5335 0 2 73491.0000 73349.5335 0.19% - 1s 0 0 73349.5335 0 2 73491.0000 73349.5335 0.19% - 1s 0 0 73349.5335 0 2 73491.0000 73349.5335 0.19% - 1s 0 0 73351.3745 0 2 73491.0000 73351.3745 0.19% - 1s 0 0 73356.8395 0 3 73491.0000 73356.8395 0.18% - 1s 0 2 73371.3792 0 3 73491.0000 73371.3792 0.16% - 2s * 3 2 2 73424.000000 73424.0000 0.0% 50.7 2s Cutting planes: Implied bound: 84 Flow cover: 1 Explored 4 nodes (4017 simplex iterations) in 2.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.342400000000e+04, best bound 7.342400000000e+04, gap 0.0%