Build (method = -2) #dp: 2179 Step-3' Graph: 109 vertices and 320 arcs (0.01s) Step-4' Graph: 14 vertices and 130 arcs (0.01s) #V4/#V3 = 0.13 #A4/#A3 = 0.41 Ready! (0.01s) Optimize a model with 48 rows, 131 columns and 369 nonzeros Presolve removed 4 rows and 4 columns Presolve time: 0.00s Presolved: 44 rows, 127 columns, 359 nonzeros Variable types: 0 continuous, 127 integer (58 binary) Found heuristic solution: objective 28.0000000 Optimize a model with 44 rows, 127 columns and 359 nonzeros Presolved: 44 rows, 127 columns, 359 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.350e+02 Factor NZ : 4.780e+02 Factor Ops : 8.042e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.45578654e+02 -2.00352343e+02 2.18e+01 2.45e-02 2.26e+00 0s 1 3.83197701e+01 -4.27852430e+01 7.11e-14 3.33e-16 3.16e-01 0s 2 1.88373679e+01 8.83140425e+00 7.06e-14 1.39e-16 3.81e-02 0s 3 1.66743307e+01 1.65881533e+01 2.55e-14 2.22e-16 3.23e-04 0s 4 1.66666744e+01 1.66665882e+01 6.99e-15 3.33e-16 3.23e-07 0s 5 1.66666667e+01 1.66666667e+01 7.90e-14 1.11e-16 3.23e-13 0s Barrier solved model in 5 iterations and 0.00 seconds Optimal objective 1.66666667e+01 Root relaxation: objective 1.666667e+01, 93 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.66667 0 4 28.00000 16.66667 40.5% - 0s H 0 0 17.0000000 16.66667 1.96% - 0s Explored 0 nodes (127 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 17 Solution: 2 x [9, 26, 29] 1 x [8, 25, 30] 1 x [14, 22, 24] 2 x [2, 23, 31] 1 x [13, 13, 21] 2 x [12, 19, 20] 1 x [11, 16, 19] 1 x [15, 18, 18] 1 x [10, 12, 17] 1 x [8, 27, 30] 1 x [5, 7] 1 x [4, 6, 32] 1 x [1, 3, 29] 1 x [28, 33, 34]