Build (method = -2) #dp: 295 Step-3' Graph: 70 vertices and 203 arcs (0.00s) Step-4' Graph: 28 vertices and 119 arcs (0.00s) #V4/#V3 = 0.40 #A4/#A3 = 0.59 Ready! (0.00s) Optimize a model with 48 rows, 120 columns and 308 nonzeros Presolve removed 14 rows and 17 columns Presolve time: 0.00s Presolved: 34 rows, 103 columns, 263 nonzeros Variable types: 0 continuous, 103 integer (4 binary) Found heuristic solution: objective 175.0000000 Found heuristic solution: objective 146.0000000 Optimize a model with 34 rows, 103 columns and 263 nonzeros Presolved: 34 rows, 103 columns, 263 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.720e+02 Factor NZ : 5.070e+02 Factor Ops : 9.285e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.88213438e+02 -1.55323380e+03 9.34e+02 2.22e-16 3.31e+01 0s 1 2.40681517e+02 -4.90021447e+02 1.16e+02 5.55e-16 5.66e+00 0s 2 1.60141630e+02 -6.71262356e+01 1.58e+00 5.00e-16 1.07e+00 0s 3 1.31732864e+02 8.01549608e+01 2.31e-02 3.05e-16 2.40e-01 0s 4 1.20256165e+02 1.09405262e+02 1.28e-03 2.22e-16 5.05e-02 0s 5 1.19230061e+02 1.18569278e+02 1.69e-04 2.97e-16 3.07e-03 0s 6 1.19000567e+02 1.18999170e+02 3.86e-07 2.44e-16 6.50e-06 0s 7 1.19000000e+02 1.19000000e+02 2.84e-13 2.22e-16 7.42e-12 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 1.19000000e+02 Root relaxation: objective 1.190000e+02, 46 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 119.0000000 119.00000 0.0% - 0s Explored 0 nodes (46 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.190000000000e+02, best bound 1.190000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 119 Solution: 9 x [1] 24 x [2] 1 x [3] 13 x [4] 10 x [4, 17] 9 x [5, 16] 4 x [6] 11 x [6, 15] 4 x [6, 16] 1 x [7] 11 x [8, 14] 3 x [9, 12] 2 x [9, 14, 20] 4 x [10, 13] 3 x [11, 13, 19] 1 x [12, 14] 4 x [12, 14, 20] 5 x [13, 14, 18]