Build (method = -2) #dp: 69 Step-3' Graph: 19 vertices and 50 arcs (0.00s) Step-4' Graph: 11 vertices and 34 arcs (0.00s) #V4/#V3 = 0.58 #A4/#A3 = 0.68 Ready! (0.00s) Optimize a model with 21 rows, 35 columns and 87 nonzeros Presolve removed 8 rows and 9 columns Presolve time: 0.00s Presolved: 13 rows, 26 columns, 64 nonzeros Variable types: 0 continuous, 26 integer (0 binary) Found heuristic solution: objective 701.0000000 Found heuristic solution: objective 628.0000000 Optimize a model with 13 rows, 26 columns and 64 nonzeros Presolved: 13 rows, 26 columns, 64 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.400e+01 Factor NZ : 9.100e+01 Factor Ops : 8.190e+02 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.13582985e+03 -2.89502804e+03 1.42e+03 5.55e-17 1.98e+02 0s 1 8.87339021e+02 -5.01059261e+02 5.36e+01 2.78e-16 2.66e+01 0s 2 6.28270344e+02 1.03795657e+02 3.54e+00 4.55e-15 9.27e+00 0s 3 5.34865431e+02 4.56740324e+02 1.83e-02 3.33e-16 1.37e+00 0s 4 4.99762324e+02 4.87646431e+02 2.38e-03 3.33e-16 2.13e-01 0s 5 4.95576075e+02 4.95386437e+02 3.00e-05 1.11e-16 3.33e-03 0s 6 4.95500002e+02 4.95499999e+02 3.68e-10 9.85e-17 4.90e-08 0s 7 4.95500000e+02 4.95500000e+02 8.24e-13 2.22e-16 4.97e-14 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 4.95500000e+02 Root relaxation: objective 4.955000e+02, 9 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 495.50000 0 3 628.00000 495.50000 21.1% - 0s H 0 0 496.0000000 495.50000 0.10% - 0s Explored 0 nodes (14 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.960000000000e+02, best bound 4.960000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 496 Solution: 62 x [1, 10] 20 x [2] 111 x [2, 9] 61 x [3, 8] 110 x [4, 5] 41 x [4, 6] 20 x [5, 6] 1 x [6] 5 x [6, 7] 29 x [6, 7, 10] 36 x [6, 8]