Build (method = -2) #dp: 811 Step-3' Graph: 60 vertices and 181 arcs (0.00s) Step-4' Graph: 11 vertices and 83 arcs (0.00s) #V4/#V3 = 0.18 #A4/#A3 = 0.46 Ready! (0.00s) Optimize a model with 50 rows, 84 columns and 234 nonzeros Presolve removed 36 rows and 49 columns Presolve time: 0.00s Presolved: 14 rows, 35 columns, 86 nonzeros Variable types: 0 continuous, 35 integer (8 binary) Found heuristic solution: objective 26.0000000 Optimize a model with 14 rows, 35 columns and 86 nonzeros Presolved: 14 rows, 35 columns, 86 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.500e+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 2.75354150e+02 -2.69444546e+02 5.99e+01 4.44e-16 2.03e+01 0s 1 6.64875232e+01 -8.11154547e+01 5.19e+00 8.88e-16 2.71e+00 0s 2 3.21463584e+01 1.05129402e+01 4.44e-16 1.78e-15 2.88e-01 0s 3 2.57453549e+01 2.03953206e+01 4.00e-15 2.22e-16 7.13e-02 0s 4 2.50088588e+01 2.49075510e+01 3.55e-15 2.22e-16 1.35e-03 0s 5 2.50000002e+01 2.49999997e+01 1.47e-14 2.22e-16 6.40e-09 0s 6 2.50000000e+01 2.50000000e+01 1.24e-14 3.33e-16 6.46e-15 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 2.50000000e+01 Root relaxation: objective 2.500000e+01, 17 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 25.0000000 25.00000 0.0% - 0s Explored 0 nodes (17 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 25 Solution: 1 x [16, 39] 1 x [13, 38] 1 x [19, 37] 1 x [11, 37] 1 x [9, 36] 1 x [8, 35] 1 x [7, 34] 3 x [4, 33] 1 x [24, 32] 1 x [3, 31] 2 x [27, 30] 1 x [28, 29] 1 x [1, 29] 1 x [2, 26] 1 x [24, 25] 1 x [6, 23] 1 x [17, 22] 1 x [5, 22] 1 x [10, 21] 1 x [12, 20] 1 x [15, 18] 1 x [12, 14]