Build (method = -2) #dp: 15770 Step-3' Graph: 396 vertices and 1181 arcs (0.13s) Step-4' Graph: 141 vertices and 671 arcs (0.13s) #V4/#V3 = 0.36 #A4/#A3 = 0.57 Ready! (0.13s) Optimize a model with 185 rows, 672 columns and 1738 nonzeros Presolve removed 44 rows and 88 columns Presolve time: 0.01s Presolved: 141 rows, 584 columns, 1566 nonzeros Variable types: 0 continuous, 584 integer (77 binary) Found heuristic solution: objective 82.0000000 Found heuristic solution: objective 66.0000000 Optimize a model with 141 rows, 584 columns and 1566 nonzeros Presolved: 141 rows, 584 columns, 1566 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 7.470e+02 Factor NZ : 1.490e+03 Factor Ops : 1.948e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 9.24362417e+02 -1.94328539e+03 1.53e+03 1.21e-01 1.27e+01 0s 1 2.11866188e+02 -9.00749656e+02 1.49e+02 4.44e-16 1.84e+00 0s 2 7.24711153e+01 -1.74029200e+02 2.24e+00 3.89e-16 2.12e-01 0s 3 3.56045477e+01 -1.18652905e+01 4.97e-03 3.33e-16 3.97e-02 0s 4 1.92651633e+01 2.50500859e+00 1.54e-03 1.82e-16 1.40e-02 0s 5 1.83941751e+01 1.34677255e+01 6.06e-05 1.78e-16 4.11e-03 0s 6 1.69848099e+01 1.64785641e+01 1.13e-05 2.31e-16 4.23e-04 0s 7 1.66667385e+01 1.66665367e+01 4.70e-09 3.23e-16 1.69e-07 0s 8 1.66666667e+01 1.66666665e+01 1.19e-13 2.22e-16 1.69e-10 0s 9 1.66666667e+01 1.66666667e+01 4.73e-14 2.23e-16 4.43e-16 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 1.66666667e+01 Root relaxation: objective 1.666667e+01, 371 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.66667 0 11 66.00000 16.66667 74.7% - 0s H 0 0 17.0000000 16.66667 1.96% - 0s Explored 0 nodes (425 simplex iterations) in 0.02 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: 0.14 seconds Gurobi run time: 0.02 seconds Total run time: 0.17 seconds Objective: 17 Solution: 2 x [1, 3, 10, 26, 33, 33] 1 x [5, 8, 24, 25, 25, 32] 1 x [16, 29, 31, 34, 40] 1 x [4, 16, 26, 31, 31, 36] 1 x [20, 23, 23, 27, 30, 30] 1 x [22, 29, 35, 35, 35, 44] 1 x [8, 18, 21, 29, 43, 43] 1 x [11, 12, 17, 28, 44] 1 x [6, 14, 15, 18, 19, 39] 2 x [2, 4, 5, 12, 19, 41] 1 x [7, 13, 14, 15, 37, 39] 1 x [2, 3, 9, 15, 39, 42] 3 x [3, 6, 9, 13, 36, 38]