Build (method = -2) #dp: 2850 Step-3' Graph: 93 vertices and 278 arcs (0.01s) Step-4' Graph: 36 vertices and 164 arcs (0.01s) #V4/#V3 = 0.39 #A4/#A3 = 0.59 Ready! (0.01s) Optimize a model with 46 rows, 165 columns and 433 nonzeros Presolve removed 10 rows and 19 columns Presolve time: 0.00s Presolved: 36 rows, 146 columns, 397 nonzeros Variable types: 0 continuous, 146 integer (7 binary) Found heuristic solution: objective 97.0000000 Found heuristic solution: objective 52.0000000 Optimize a model with 36 rows, 146 columns and 397 nonzeros Presolved: 36 rows, 146 columns, 397 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.990e+02 Factor NZ : 4.950e+02 Factor Ops : 8.241e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.03564381e+03 -2.11773688e+03 2.19e+03 1.20e-01 7.23e+01 0s 1 2.54806051e+02 -1.12573881e+03 3.38e+02 7.77e-16 1.26e+01 0s 2 6.96089651e+01 -3.54034249e+02 2.05e+01 9.99e-16 1.73e+00 0s 3 3.25452992e+01 -2.73378922e+01 2.13e-14 3.33e-16 1.99e-01 0s 4 1.76134121e+01 2.95718300e-01 5.77e-15 2.81e-16 5.75e-02 0s 5 1.54359501e+01 1.07303480e+01 3.77e-14 3.75e-16 1.56e-02 0s 6 1.44691308e+01 1.39007210e+01 1.05e-13 3.33e-16 1.89e-03 0s 7 1.42864271e+01 1.42807425e+01 4.91e-14 2.30e-16 1.89e-05 0s 8 1.42857150e+01 1.42857093e+01 1.50e-14 3.06e-16 1.89e-08 0s 9 1.42857143e+01 1.42857143e+01 5.66e-14 3.38e-16 1.98e-14 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 1.42857143e+01 Root relaxation: objective 1.428571e+01, 98 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.28571 0 16 52.00000 14.28571 72.5% - 0s H 0 0 15.0000000 14.28571 4.76% - 0s Explored 0 nodes (121 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.03 seconds Objective: 15 Solution: 1 x [2, 4, 7, 7, 7] 5 x [2, 4, 6, 6, 6, 9, 9] 4 x [2, 2, 7, 7, 8, 10, 10] 3 x [1, 4, 5, 6, 8, 9, 9] 1 x [1, 4, 4, 6, 9, 9] 1 x [1, 3, 4, 9, 9]