Build (method = -2) #dp: 1199 Step-3' Graph: 60 vertices and 218 arcs (0.00s) Step-4' Graph: 60 vertices and 218 arcs (0.00s) #V4/#V3 = 1.00 #A4/#A3 = 1.00 Ready! (0.00s) Optimize a model with 80 rows, 219 columns and 583 nonzeros Presolve removed 31 rows and 53 columns Presolve time: 0.00s Presolved: 49 rows, 166 columns, 420 nonzeros Variable types: 0 continuous, 166 integer (0 binary) Found heuristic solution: objective 797.0000000 Optimize a model with 49 rows, 166 columns and 420 nonzeros Presolved: 49 rows, 166 columns, 420 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.330e+02 Factor NZ : 7.160e+02 Factor Ops : 1.205e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.00624750e+03 -7.51043246e+03 6.12e+03 2.22e-16 1.25e+02 0s 1 1.10955256e+03 -3.93892064e+03 6.99e+02 9.99e-16 2.33e+01 0s 2 8.28400002e+02 -6.41459287e+02 3.25e+01 1.33e-15 4.50e+00 0s 3 6.79522044e+02 3.35022103e+02 3.59e+00 1.44e-15 1.02e+00 0s 4 6.14569968e+02 5.51005822e+02 5.43e-01 5.66e-16 1.88e-01 0s 5 6.07249644e+02 6.02743919e+02 9.53e-02 8.80e-16 1.34e-02 0s 6 6.06009390e+02 6.05948098e+02 2.33e-12 9.49e-16 1.81e-04 0s 7 6.06000000e+02 6.06000000e+02 1.03e-12 8.88e-16 6.02e-10 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 6.06000000e+02 Root relaxation: objective 6.060000e+02, 102 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 606.0000000 606.00000 0.0% - 0s Explored 0 nodes (102 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.060000000000e+02, best bound 6.060000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 606 Solution: 24 x [16] 67 x [6] 11 x [3] 43 x [3, 7] 29 x [17] 9 x [13] 16 x [8, 13] 29 x [19] 12 x [20] 26 x [8, 20] 31 x [10, 20] 11 x [12] 79 x [14, 18] 22 x [9] 49 x [4, 9] 15 x [9, 14] 21 x [11] 2 x [4, 11] 42 x [11, 15] 11 x [4, 5] 14 x [2, 5] 1 x [1] 42 x [1, 1]