Build (method = -2) #dp: 484 Step-3' Graph: 52 vertices and 145 arcs (0.00s) Step-4' Graph: 15 vertices and 71 arcs (0.00s) #V4/#V3 = 0.29 #A4/#A3 = 0.49 Ready! (0.00s) Optimize a model with 23 rows, 72 columns and 195 nonzeros Presolve removed 5 rows and 8 columns Presolve time: 0.00s Presolved: 18 rows, 64 columns, 180 nonzeros Variable types: 0 continuous, 64 integer (6 binary) Found heuristic solution: objective 98.0000000 Found heuristic solution: objective 96.0000000 Optimize a model with 18 rows, 64 columns and 180 nonzeros Presolved: 18 rows, 64 columns, 180 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 7.800e+01 Factor NZ : 1.710e+02 Factor Ops : 2.109e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 5.09089037e+02 -9.32570271e+02 3.40e+02 8.74e-02 4.27e+01 0s 1 1.17597011e+02 -4.59902924e+02 2.77e+01 4.44e-16 6.11e+00 0s 2 4.91681247e+01 -5.71728683e+01 2.37e-04 1.33e-15 7.88e-01 0s 3 1.91182571e+01 2.68756268e+00 1.15e-05 2.22e-16 1.22e-01 0s 4 1.77385615e+01 1.57504639e+01 1.31e-06 1.11e-16 1.47e-02 0s 5 1.66707888e+01 1.66554994e+01 1.00e-08 1.34e-16 1.13e-04 0s 6 1.66666667e+01 1.66666667e+01 1.01e-14 3.33e-16 1.64e-10 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 1.66666667e+01 Root relaxation: objective 1.666667e+01, 44 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 6 96.00000 16.66667 82.6% - 0s H 0 0 17.0000000 16.66667 1.96% - 0s Explored 0 nodes (57 simplex iterations) in 0.00 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: 0.00 seconds Total run time: 0.01 seconds Objective: 17 Solution: 2 x [1, 2, 2, 4, 5, 7] 1 x [1, 2, 2, 6, 7, 8] 9 x [3, 4, 5, 6, 6, 7] 4 x [2, 2, 3, 4, 6, 7] 1 x [2, 2, 2, 4]