Build (method = -2) #dp: 8635 Step-3' Graph: 310 vertices and 920 arcs (0.08s) Step-4' Graph: 84 vertices and 468 arcs (0.08s) #V4/#V3 = 0.27 #A4/#A3 = 0.51 Ready! (0.08s) Optimize a model with 130 rows, 469 columns and 1246 nonzeros Presolve removed 26 rows and 50 columns Presolve time: 0.01s Presolved: 104 rows, 419 columns, 1152 nonzeros Variable types: 0 continuous, 419 integer (75 binary) Found heuristic solution: objective 70.0000000 Optimize a model with 104 rows, 419 columns and 1152 nonzeros Presolved: 104 rows, 419 columns, 1152 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.050e+02 Factor NZ : 1.059e+03 Factor Ops : 1.547e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.84016004e+02 -1.09256745e+03 5.96e+02 8.61e-02 8.21e+00 0s 1 1.31630675e+02 -5.35839179e+02 3.03e+01 4.44e-16 1.04e+00 0s 2 5.84079652e+01 -5.75892235e+01 1.30e-02 4.44e-16 1.35e-01 0s 3 2.71727217e+01 6.12284248e+00 1.35e-03 2.22e-16 2.43e-02 0s 4 2.43021336e+01 2.33390910e+01 1.20e-13 2.22e-16 1.11e-03 0s 5 2.40004903e+01 2.39994508e+01 7.40e-14 1.95e-16 1.20e-06 0s 6 2.40000000e+01 2.40000000e+01 8.97e-14 2.22e-16 1.20e-12 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 2.40000000e+01 Root relaxation: objective 2.400000e+01, 296 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 24.0000000 24.00000 0.0% - 0s Explored 0 nodes (340 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0% Preprocessing time: 0.08 seconds Gurobi run time: 0.02 seconds Total run time: 0.10 seconds Objective: 24 Solution: 4 x [22, 25, 28, 38, 46] 1 x [34, 34, 34, 34, 45] 1 x [3, 4, 7, 32, 44] 1 x [1, 2, 4, 32, 44] 1 x [20, 26, 43, 43, 43] 3 x [2, 6, 26, 36, 42] 1 x [20, 26, 37, 41, 41] 2 x [4, 14, 15, 21, 40] 1 x [19, 20, 26, 29, 39] 1 x [21, 31, 35, 35, 35] 1 x [8, 16, 20, 22, 33] 2 x [1, 18, 21, 27, 31] 1 x [6, 11, 12, 17, 30] 1 x [4, 11, 12, 14, 28] 1 x [1, 10, 11, 18, 24] 1 x [4, 5, 9, 13, 23] 1 x [4, 4, 9, 13, 23]