Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:39:20 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 8.246600e+04, 2113 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 82466.0047 0 7 - 82466.0047 - - 0s H 0 0 85720.000000 82466.0047 3.80% - 0s 0 0 82631.8070 0 4 85720.0000 82631.8070 3.60% - 0s H 0 0 84813.915400 82631.8070 2.57% - 0s H 0 0 84540.000000 82631.8070 2.26% - 0s 0 0 82659.3762 0 6 84540.0000 82659.3762 2.22% - 0s 0 0 82667.0085 0 4 84540.0000 82667.0085 2.22% - 0s H 0 0 84436.000000 82667.0085 2.10% - 0s 0 0 82670.2889 0 4 84436.0000 82670.2889 2.09% - 0s H 0 0 84412.000000 82670.2889 2.06% - 0s 0 0 82670.4408 0 4 84412.0000 82670.4408 2.06% - 0s 0 0 82671.7874 0 2 84412.0000 82671.7874 2.06% - 0s H 0 0 83808.478435 82671.7874 1.36% - 0s H 0 0 83538.000000 82671.7874 1.04% - 0s 0 0 82671.7874 0 7 83538.0000 82671.7874 1.04% - 1s 0 0 82671.7874 0 4 83538.0000 82671.7874 1.04% - 1s 0 0 82671.7874 0 6 83538.0000 82671.7874 1.04% - 1s 0 0 82671.7874 0 4 83538.0000 82671.7874 1.04% - 1s 0 0 82671.7874 0 4 83538.0000 82671.7874 1.04% - 1s 0 0 82671.7874 0 4 83538.0000 82671.7874 1.04% - 1s 0 0 82671.7874 0 2 83538.0000 82671.7874 1.04% - 1s H 0 0 83526.000000 82671.7874 1.02% - 1s 0 2 82672.1030 0 2 83526.0000 82672.1030 1.02% - 1s H 5 4 82778.000000 82686.3465 0.11% 29.6 1s * 10 2 9 82760.000000 82686.3465 0.09% 20.6 2s * 17 1 5 82754.000000 82733.6747 0.02% 29.9 2s Cutting planes: Implied bound: 64 Flow cover: 3 Explored 19 nodes (4836 simplex iterations) in 2.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.275400000000e+04, best bound 8.275400000000e+04, gap 0.0%