Build (method = -2) #dp: 213 Step-3' Graph: 25 vertices and 106 arcs (0.00s) Step-4' Graph: 18 vertices and 92 arcs (0.00s) #V4/#V3 = 0.72 #A4/#A3 = 0.87 Ready! (0.00s) Optimize a model with 38 rows, 93 columns and 251 nonzeros Presolve removed 16 rows and 21 columns Presolve time: 0.00s Presolved: 22 rows, 72 columns, 184 nonzeros Variable types: 0 continuous, 72 integer (0 binary) Found heuristic solution: objective 1729.0000000 Found heuristic solution: objective 1351.0000000 Found heuristic solution: objective 1255.0000000 Optimize a model with 22 rows, 72 columns and 184 nonzeros Presolved: 22 rows, 72 columns, 184 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 8.400e+01 Factor NZ : 2.110e+02 Factor Ops : 2.451e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 7.16688020e+03 -1.03603029e+04 9.89e+03 2.22e-16 4.26e+02 0s 1 2.46743736e+03 -2.99054178e+03 8.10e+02 4.44e-16 5.51e+01 0s 2 1.61283461e+03 1.89842091e+02 1.63e+00 5.55e-16 9.38e+00 0s 3 1.23565782e+03 9.69774753e+02 2.58e-02 3.89e-16 1.75e+00 0s 4 1.15665875e+03 1.14329202e+03 1.82e-03 2.22e-16 8.79e-02 0s 5 1.15001536e+03 1.14998731e+03 3.21e-06 4.44e-16 1.85e-04 0s 6 1.15000000e+03 1.15000000e+03 2.96e-12 1.75e-16 1.86e-10 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 1.15000000e+03 Root relaxation: objective 1.150000e+03, 21 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1150.00000 0 4 1255.00000 1150.00000 8.37% - 0s H 0 0 1151.0000000 1150.00000 0.09% - 0s H 0 0 1150.0000000 1150.00000 0.0% - 0s Explored 0 nodes (25 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.150000000000e+03, best bound 1.150000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 1150 Solution: 82 x [6, 13] 11 x [9] 10 x [6, 9] 62 x [7] 136 x [3] 16 x [3, 17] 15 x [3, 15] 51 x [4, 17] 125 x [2, 14] 36 x [2, 15] 9 x [5, 16] 160 x [1, 16] 116 x [10, 11] 24 x [20] 57 x [11, 20] 119 x [19] 15 x [8, 8] 1 x [12, 18] 53 x [12, 12] 52 x [6, 18, 18]