Build (method = -2) #dp: 331 Step-3' Graph: 74 vertices and 215 arcs (0.00s) Step-4' Graph: 35 vertices and 137 arcs (0.00s) #V4/#V3 = 0.47 #A4/#A3 = 0.64 Ready! (0.00s) Optimize a model with 55 rows, 138 columns and 348 nonzeros Presolve removed 13 rows and 18 columns Presolve time: 0.00s Presolved: 42 rows, 120 columns, 304 nonzeros Variable types: 0 continuous, 120 integer (7 binary) Found heuristic solution: objective 1392.0000000 Found heuristic solution: objective 1365.0000000 Optimize a model with 42 rows, 120 columns and 304 nonzeros Presolved: 42 rows, 120 columns, 304 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.970e+02 Factor NZ : 5.240e+02 Factor Ops : 7.490e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.87328260e+03 -1.32505680e+04 7.48e+03 1.90e-01 2.29e+02 0s 1 2.14695408e+03 -4.23790273e+03 9.76e+02 3.89e-16 4.07e+01 0s 2 1.35837750e+03 -1.68195275e+02 7.54e+01 4.00e-15 6.64e+00 0s 3 1.14433967e+03 7.12945428e+02 8.62e+00 6.66e-16 1.75e+00 0s 4 1.05851587e+03 9.24302841e+02 1.18e+00 2.22e-16 5.39e-01 0s 5 1.03827540e+03 1.02573980e+03 3.30e-01 2.22e-16 5.04e-02 0s 6 1.03467305e+03 1.03433287e+03 9.68e-03 1.11e-16 1.37e-03 0s 7 1.03450000e+03 1.03449999e+03 6.70e-08 1.63e-16 4.63e-08 0s 8 1.03450000e+03 1.03450000e+03 5.12e-13 3.33e-16 4.63e-11 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 1.03450000e+03 Root relaxation: objective 1.034500e+03, 75 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1034.50000 0 8 1365.00000 1034.50000 24.2% - 0s H 0 0 1035.0000000 1034.50000 0.05% - 0s Explored 0 nodes (93 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.035000000000e+03, best bound 1.035000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 1035 Solution: 125 x [1] 140 x [2, 16] 35 x [2, 20] 169 x [3, 19] 88 x [4, 18] 1 x [4, 19] 5 x [4, 19, 20] 19 x [4, 20] 62 x [5, 17] 10 x [5, 19] 54 x [6, 15] 21 x [7, 12] 69 x [7, 13] 15 x [7, 14, 20] 80 x [8, 9] 105 x [8, 10] 8 x [8, 13, 20] 6 x [10, 13, 19] 1 x [10, 19] 1 x [11, 15] 21 x [12, 15, 20]