Build (method = -2) #dp: 3924 Step-3' Graph: 129 vertices and 380 arcs (0.02s) Step-4' Graph: 10 vertices and 142 arcs (0.02s) #V4/#V3 = 0.08 #A4/#A3 = 0.37 Ready! (0.02s) Optimize a model with 52 rows, 143 columns and 413 nonzeros Presolve removed 4 rows and 4 columns Presolve time: 0.00s Presolved: 48 rows, 139 columns, 403 nonzeros Variable types: 0 continuous, 139 integer (100 binary) Found heuristic solution: objective 44.0000000 Optimize a model with 48 rows, 139 columns and 403 nonzeros Presolved: 48 rows, 139 columns, 403 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.430e+02 Factor NZ : 5.970e+02 Factor Ops : 1.174e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.61321717e+02 -1.97244525e+02 1.11e+01 1.03e-02 1.90e+00 0s 1 4.08392919e+01 -2.57459557e+01 2.52e-13 2.78e-16 2.47e-01 0s 2 1.96394615e+01 1.08462714e+01 3.44e-14 1.75e-16 3.21e-02 0s 3 1.66913892e+01 1.66102608e+01 7.24e-14 1.11e-16 2.85e-04 0s 4 1.66666913e+01 1.66666102e+01 5.86e-14 1.60e-16 2.85e-07 0s 5 1.66666667e+01 1.66666667e+01 1.89e-13 3.33e-16 2.85e-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 3 44.00000 16.66667 62.1% - 0s H 0 0 17.0000000 16.66667 1.96% - 0s Explored 0 nodes (129 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: 0.03 seconds Gurobi run time: 0.01 seconds Total run time: 0.04 seconds Objective: 17 Solution: 2 x [10, 12, 16] 1 x [11, 13, 15] 1 x [8, 10, 14] 1 x [5, 7, 9] 2 x [4, 6, 26] 1 x [2, 3, 41] 1 x [1, 38, 42] 1 x [36, 39, 40] 1 x [30, 35, 37] 1 x [27, 33, 34] 1 x [25, 29, 32] 1 x [24, 28, 31] 1 x [23, 24] 1 x [18, 20, 22] 1 x [17, 19, 21]