Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:46:43 2013 Optimize a model with 814 rows, 54834 columns and 109594 nonzeros Presolve time: 0.08s Presolved: 814 rows, 54834 columns, 109594 nonzeros Variable types: 54760 continuous, 74 integer (74 binary) Root relaxation: objective 8.100499e+04, 2177 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 81004.9877 0 7 - 81004.9877 - - 0s H 0 0 83587.000000 81004.9877 3.09% - 0s H 0 0 82167.000000 81004.9877 1.41% - 0s 0 0 81406.5220 0 7 82167.0000 81406.5220 0.93% - 0s 0 0 81458.7660 0 5 82167.0000 81458.7660 0.86% - 0s 0 0 81458.7660 0 7 82167.0000 81458.7660 0.86% - 0s 0 0 81458.7660 0 7 82167.0000 81458.7660 0.86% - 0s 0 0 81458.7660 0 6 82167.0000 81458.7660 0.86% - 0s 0 0 81465.7226 0 4 82167.0000 81465.7226 0.85% - 1s 0 0 81466.2636 0 4 82167.0000 81466.2636 0.85% - 1s 0 0 81466.4366 0 4 82167.0000 81466.4366 0.85% - 1s 0 0 81466.4366 0 4 82167.0000 81466.4366 0.85% - 1s 0 2 81482.9162 0 4 82167.0000 81482.9162 0.83% - 1s H 7 6 82110.082192 81544.5821 0.69% 30.3 1s H 10 6 81720.400000 81544.5821 0.22% 28.2 1s * 11 5 9 81698.000000 81544.5821 0.19% 29.5 1s H 18 4 81630.021505 81579.5303 0.06% 23.9 1s H 19 3 81599.666667 81579.5303 0.02% 22.9 1s * 20 4 9 81581.000000 81579.5303 0.00% 22.1 1s Cutting planes: Implied bound: 93 Flow cover: 3 Explored 21 nodes (4989 simplex iterations) in 1.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.158100000000e+04, best bound 8.157953030303e+04, gap 0.0018%