Build (method = -2) #dp: 91 Step-3' Graph: 18 vertices and 55 arcs (0.00s) Step-4' Graph: 11 vertices and 41 arcs (0.00s) #V4/#V3 = 0.61 #A4/#A3 = 0.75 Ready! (0.00s) Optimize a model with 21 rows, 42 columns and 111 nonzeros Presolve removed 7 rows and 8 columns Presolve time: 0.00s Presolved: 14 rows, 34 columns, 90 nonzeros Variable types: 0 continuous, 34 integer (0 binary) Found heuristic solution: objective 998.0000000 Found heuristic solution: objective 583.0000000 Found heuristic solution: objective 498.0000000 Optimize a model with 14 rows, 34 columns and 90 nonzeros Presolved: 14 rows, 34 columns, 90 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 4.500e+01 Factor NZ : 1.050e+02 Factor Ops : 1.015e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.64632212e+03 -2.06357690e+03 4.52e+02 1.11e-16 1.33e+02 0s 1 7.43986908e+02 -2.99801360e+02 3.54e+01 5.55e-16 1.83e+01 0s 2 5.37127056e+02 3.42033400e+02 4.60e-02 1.14e-14 2.67e+00 0s 3 4.55627184e+02 4.04101604e+02 3.71e-03 4.00e-15 7.06e-01 0s 4 4.50615928e+02 4.43489906e+02 2.70e-04 5.55e-16 9.76e-02 0s 5 4.49301504e+02 4.48798725e+02 7.62e-06 2.22e-16 6.89e-03 0s 6 4.49250029e+02 4.49249702e+02 7.04e-10 2.64e-16 4.47e-06 0s 7 4.49250000e+02 4.49250000e+02 2.38e-13 3.38e-16 4.54e-12 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 4.49250000e+02 Root relaxation: objective 4.492500e+02, 12 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 449.25000 0 4 498.00000 449.25000 9.79% - 0s H 0 0 450.0000000 449.25000 0.17% - 0s Explored 0 nodes (15 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.500000000000e+02, best bound 4.500000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 450 Solution: 45 x [1, 9] 104 x [1, 3] 26 x [2, 8] 49 x [4, 8] 137 x [1, 10] 6 x [1, 2, 7] 69 x [1, 6, 6] 9 x [1, 1, 1, 5] 1 x [1] 4 x [1, 1, 1, 1]