Build (method = -2) #dp: 1658 Step-3' Graph: 79 vertices and 254 arcs (0.01s) Step-4' Graph: 42 vertices and 180 arcs (0.01s) #V4/#V3 = 0.53 #A4/#A3 = 0.71 Ready! (0.01s) Optimize a model with 52 rows, 181 columns and 464 nonzeros Presolve removed 9 rows and 22 columns Presolve time: 0.00s Presolved: 43 rows, 159 columns, 417 nonzeros Variable types: 0 continuous, 159 integer (0 binary) Found heuristic solution: objective 94.0000000 Found heuristic solution: objective 59.0000000 Optimize a model with 43 rows, 159 columns and 417 nonzeros Presolved: 43 rows, 159 columns, 417 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.310e+02 Factor NZ : 6.090e+02 Factor Ops : 1.008e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.03699407e+03 -4.48395643e+03 2.48e+03 2.22e-16 9.22e+01 0s 1 2.61797881e+02 -1.79894321e+03 2.87e+02 6.66e-16 1.33e+01 0s 2 1.03873074e+02 -4.85857886e+02 1.87e+01 8.88e-16 2.07e+00 0s 3 6.28245951e+01 -8.54036931e+01 3.86e-02 4.44e-16 4.52e-01 0s 4 2.85168039e+01 -1.79606918e+01 9.12e-03 3.33e-16 1.42e-01 0s 5 2.07676389e+01 -2.21717832e+00 4.10e-03 2.56e-16 7.01e-02 0s 6 1.96909095e+01 9.63059191e+00 1.01e-03 2.22e-16 3.07e-02 0s 7 1.68259576e+01 1.59679653e+01 5.53e-05 3.80e-16 2.62e-03 0s 8 1.66668305e+01 1.66659680e+01 1.00e-13 2.29e-16 2.63e-06 0s 9 1.66666667e+01 1.66666667e+01 2.44e-14 3.33e-16 2.63e-12 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 1.66666667e+01 Root relaxation: objective 1.666667e+01, 94 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 16 59.00000 16.66667 71.8% - 0s H 0 0 18.0000000 16.66667 7.41% - 0s H 0 0 17.0000000 16.66667 1.96% - 0s Explored 0 nodes (133 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: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 17 Solution: 3 x [2, 4, 6, 7, 8, 8] 1 x [1, 5, 6, 10] 3 x [1, 5, 6, 6, 9, 10] 7 x [1, 4, 5, 7, 7, 9] 2 x [1, 1, 3, 4, 6, 7] 1 x [4, 6, 6, 8, 8, 8]