Build (method = -2) #dp: 248 Step-3' Graph: 33 vertices and 114 arcs (0.00s) Step-4' Graph: 19 vertices and 86 arcs (0.00s) #V4/#V3 = 0.58 #A4/#A3 = 0.75 Ready! (0.00s) Optimize a model with 39 rows, 87 columns and 230 nonzeros Presolve removed 12 rows and 12 columns Presolve time: 0.00s Presolved: 27 rows, 75 columns, 196 nonzeros Variable types: 0 continuous, 75 integer (0 binary) Found heuristic solution: objective 1998.0000000 Optimize a model with 27 rows, 75 columns and 196 nonzeros Presolved: 27 rows, 75 columns, 196 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 9.500e+01 Factor NZ : 2.680e+02 Factor Ops : 3.190e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 7.53094591e+03 -1.15324800e+04 1.11e+04 2.22e-16 3.74e+02 0s 1 2.98479484e+03 -3.51086502e+03 1.71e+03 3.89e-16 6.88e+01 0s 2 1.57649697e+03 3.30229425e+02 1.94e+00 1.54e-14 7.80e+00 0s 3 1.20218466e+03 9.00426005e+02 6.54e-02 2.66e-15 1.89e+00 0s 4 1.08607888e+03 1.05165740e+03 5.10e-03 3.05e-16 2.15e-01 0s 5 1.08061680e+03 1.07739868e+03 7.20e-04 2.22e-16 2.01e-02 0s 6 1.07975276e+03 1.07961674e+03 6.34e-05 3.56e-16 8.50e-04 0s 7 1.07966676e+03 1.07966657e+03 1.88e-08 2.22e-16 1.15e-06 0s 8 1.07966667e+03 1.07966667e+03 2.49e-13 2.50e-16 1.15e-09 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 1.07966667e+03 Root relaxation: objective 1.079667e+03, 25 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1079.66667 0 3 1998.00000 1079.66667 46.0% - 0s H 0 0 1080.0000000 1079.66667 0.03% - 0s Explored 0 nodes (37 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.080000000000e+03, best bound 1.080000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 1080 Solution: 144 x [12] 39 x [19] 76 x [9] 135 x [9, 11] 14 x [1, 17] 106 x [1, 15] 74 x [4, 8] 72 x [3, 4] 46 x [5, 20] 19 x [10, 18] 113 x [7, 10] 5 x [14, 16] 55 x [16, 18] 7 x [13, 14] 75 x [2, 13] 4 x [4, 6, 14] 27 x [2, 5, 6] 39 x [2, 6, 6] 1 x [7, 7] 29 x [7, 7, 7]