Build (method = -2) #dp: 55 Step-3' Graph: 11 vertices and 30 arcs (0.00s) Step-4' Graph: 6 vertices and 20 arcs (0.00s) #V4/#V3 = 0.55 #A4/#A3 = 0.67 Ready! (0.00s) Optimize a model with 16 rows, 21 columns and 56 nonzeros Presolve removed 8 rows and 8 columns Presolve time: 0.00s Presolved: 8 rows, 13 columns, 34 nonzeros Variable types: 0 continuous, 13 integer (0 binary) Found heuristic solution: objective 999.0000000 Found heuristic solution: objective 664.0000000 Optimize a model with 8 rows, 13 columns and 34 nonzeros Presolved: 8 rows, 13 columns, 34 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.300e+01 Factor NZ : 3.600e+01 Factor Ops : 2.040e+02 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.33528277e+03 -4.63910463e+02 3.05e+02 0.00e+00 9.75e+01 0s 1 8.44675279e+02 4.28196805e+02 3.00e+01 2.22e-16 1.54e+01 0s 2 6.71115741e+02 6.22241304e+02 1.15e+00 3.00e-15 1.66e+00 0s 3 6.64443060e+02 6.63762476e+02 1.14e-13 2.22e-16 2.27e-02 0s Barrier performed 3 iterations in 0.00 seconds Objective cutoff exceeded Root relaxation: cutoff, 0 iterations, 0.00 seconds Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.640000000000e+02, best bound 6.640000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 664 Solution: 142 x [2] 9 x [1, 8] 18 x [1, 7] 12 x [6] 2 x [5, 6] 65 x [6, 7] 107 x [9] 191 x [4, 8] 67 x [3] 51 x [3, 10]