Build (method = -2) #dp: 77 Step-3' Graph: 22 vertices and 59 arcs (0.00s) Step-4' Graph: 13 vertices and 41 arcs (0.00s) #V4/#V3 = 0.59 #A4/#A3 = 0.69 Ready! (0.00s) Optimize a model with 23 rows, 42 columns and 104 nonzeros Presolve removed 9 rows and 10 columns Presolve time: 0.00s Presolved: 14 rows, 32 columns, 78 nonzeros Variable types: 0 continuous, 32 integer (0 binary) Found heuristic solution: objective 674.0000000 Found heuristic solution: objective 673.0000000 Found heuristic solution: objective 672.0000000 Found heuristic solution: objective 628.0000000 Optimize a model with 14 rows, 32 columns and 78 nonzeros Presolved: 14 rows, 32 columns, 78 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 4.600e+01 Factor NZ : 1.050e+02 Factor Ops : 1.015e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.15585266e+03 -2.42554576e+03 2.33e+03 2.22e-16 1.63e+02 0s 1 7.24874022e+02 -5.29046238e+02 8.42e+01 2.22e-16 2.08e+01 0s 2 6.51098656e+02 3.57346654e+02 2.40e-01 1.11e-16 4.32e+00 0s 3 6.28643319e+02 6.14502854e+02 9.71e-04 1.21e-16 2.08e-01 0s 4 6.28000660e+02 6.27986471e+02 1.42e-13 1.61e-16 2.09e-04 0s Barrier performed 4 iterations in 0.00 seconds Objective cutoff exceeded Root relaxation: cutoff, 0 iterations, 0.00 seconds Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.280000000000e+02, best bound 6.280000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 628 Solution: 160 x [1] 19 x [2] 11 x [2, 6] 118 x [3] 71 x [3, 9] 12 x [3, 10] 29 x [4] 36 x [4, 6] 1 x [5] 6 x [5, 7] 71 x [5, 7, 10] 83 x [5, 8] 11 x [5, 10]