Build (method = -2) #dp: 629 Step-3' Graph: 36 vertices and 131 arcs (0.00s) Step-4' Graph: 19 vertices and 97 arcs (0.00s) #V4/#V3 = 0.53 #A4/#A3 = 0.74 Ready! (0.00s) Optimize a model with 39 rows, 98 columns and 262 nonzeros Presolve removed 9 rows and 13 columns Presolve time: 0.00s Presolved: 30 rows, 85 columns, 230 nonzeros Variable types: 0 continuous, 85 integer (3 binary) Found heuristic solution: objective 1099.0000000 Found heuristic solution: objective 564.0000000 Optimize a model with 30 rows, 85 columns and 230 nonzeros Presolved: 30 rows, 85 columns, 230 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.200e+02 Factor NZ : 3.550e+02 Factor Ops : 5.055e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 8.23974159e+03 -7.80822924e+03 8.99e+03 1.55e-01 3.10e+02 0s 1 1.98527437e+03 -2.62905984e+03 9.05e+02 4.44e-16 4.24e+01 0s 2 8.08607129e+02 -2.63370127e+02 2.95e+01 5.00e-16 6.11e+00 0s 3 5.59228658e+02 2.51410830e+02 5.03e+00 2.22e-16 1.70e+00 0s 4 4.73625478e+02 4.17357889e+02 6.94e-01 3.33e-16 3.08e-01 0s 5 4.57136200e+02 4.46502552e+02 1.86e-01 3.33e-16 5.81e-02 0s 6 4.54109214e+02 4.53735824e+02 4.49e-03 2.57e-16 2.04e-03 0s 7 4.54000026e+02 4.53999991e+02 7.79e-08 2.22e-16 1.91e-07 0s 8 4.54000000e+02 4.54000000e+02 1.66e-11 2.22e-16 1.91e-10 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 4.54000000e+02 Root relaxation: objective 4.540000e+02, 41 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 454.00000 0 7 564.00000 454.00000 19.5% - 0s H 0 0 455.0000000 454.00000 0.22% - 0s H 0 0 454.0000000 454.00000 0.0% - 0s Explored 0 nodes (52 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.540000000000e+02, best bound 4.540000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.01 seconds Objective: 454 Solution: 36 x [1, 9] 68 x [4, 19] 25 x [4, 9] 36 x [3, 12] 2 x [2, 12] 18 x [2, 6] 75 x [6, 17] 1 x [6, 17, 18] 4 x [6, 9, 17] 9 x [8, 13, 15] 40 x [2, 8, 13] 17 x [5, 11, 13] 25 x [10, 11, 11] 30 x [7, 13, 14] 15 x [2, 7, 20] 1 x [2, 7, 16] 4 x [7, 7, 13] 1 x [2, 7, 7] 20 x [11, 16, 20] 20 x [16, 16, 16] 7 x [2, 2, 15]