Build (method = -2) #dp: 45 Step-3' Graph: 15 vertices and 38 arcs (0.00s) Step-4' Graph: 7 vertices and 22 arcs (0.00s) #V4/#V3 = 0.47 #A4/#A3 = 0.58 Ready! (0.00s) Optimize a model with 17 rows, 23 columns and 59 nonzeros Presolve removed 9 rows and 9 columns Presolve time: 0.00s Presolved: 8 rows, 14 columns, 34 nonzeros Variable types: 0 continuous, 14 integer (0 binary) Found heuristic solution: objective 909.0000000 Found heuristic solution: objective 667.0000000 Optimize a model with 8 rows, 14 columns and 34 nonzeros Presolved: 8 rows, 14 columns, 34 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.600e+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 1.58103437e+03 -1.20574635e+03 3.63e+02 1.11e-16 1.51e+02 0s 1 8.58915361e+02 2.57568518e+02 1.14e-13 2.22e-16 1.95e+01 0s 2 6.95629814e+02 6.25565890e+02 1.14e-13 5.55e-17 2.26e+00 0s 3 6.67380495e+02 6.64380530e+02 1.14e-13 3.33e-16 9.68e-02 0s 4 6.67000789e+02 6.66997399e+02 7.28e-14 1.67e-16 1.09e-04 0s Barrier performed 4 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 6.670000000000e+02, best bound 6.670000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 667 Solution: 62 x [1] 131 x [2] 61 x [3] 111 x [4, 9] 40 x [4, 10] 97 x [5, 8] 33 x [5, 10] 80 x [6] 34 x [6, 7] 18 x [6, 10]