Build (method = -2) #dp: 59 Step-3' Graph: 17 vertices and 44 arcs (0.00s) Step-4' Graph: 9 vertices and 28 arcs (0.00s) #V4/#V3 = 0.53 #A4/#A3 = 0.64 Ready! (0.00s) Optimize a model with 19 rows, 29 columns and 73 nonzeros Presolve removed 8 rows and 9 columns Presolve time: 0.00s Presolved: 11 rows, 20 columns, 50 nonzeros Variable types: 0 continuous, 20 integer (0 binary) Found heuristic solution: objective 862.0000000 Found heuristic solution: objective 832.0000000 Found heuristic solution: objective 681.0000000 Optimize a model with 11 rows, 20 columns and 50 nonzeros Presolved: 11 rows, 20 columns, 50 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.300e+01 Factor NZ : 6.600e+01 Factor Ops : 5.060e+02 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.08700940e+03 -2.02748710e+03 3.21e+02 2.22e-16 1.73e+02 0s 1 8.83054991e+02 -1.53186359e+02 1.05e+01 3.33e-16 2.44e+01 0s 2 6.74411748e+02 3.26426819e+02 1.07e+00 1.33e-15 7.78e+00 0s 3 6.04875827e+02 5.70331916e+02 1.11e-02 2.22e-16 7.68e-01 0s 4 6.02511431e+02 6.02467666e+02 4.26e-14 1.11e-16 9.73e-04 0s 5 6.02500000e+02 6.02500000e+02 8.89e-14 1.11e-16 9.81e-10 0s Barrier solved model in 5 iterations and 0.00 seconds Optimal objective 6.02500000e+02 Root relaxation: objective 6.025000e+02, 8 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 602.50000 0 3 681.00000 602.50000 11.5% - 0s H 0 0 603.0000000 602.50000 0.08% - 0s Explored 0 nodes (8 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.030000000000e+02, best bound 6.030000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 603 Solution: 41 x [1] 164 x [2] 33 x [3, 10] 34 x [4, 6] 7 x [4, 8] 6 x [4, 10] 131 x [5, 8] 24 x [6, 8] 65 x [6, 9] 97 x [7, 10] 1 x [8]