Build (method = -2) #dp: 2663 Step-3' Graph: 91 vertices and 269 arcs (0.01s) Step-4' Graph: 36 vertices and 159 arcs (0.01s) #V4/#V3 = 0.40 #A4/#A3 = 0.59 Ready! (0.01s) Optimize a model with 46 rows, 160 columns and 418 nonzeros Presolve removed 10 rows and 19 columns Presolve time: 0.00s Presolved: 36 rows, 141 columns, 382 nonzeros Variable types: 0 continuous, 141 integer (0 binary) Found heuristic solution: objective 86.0000000 Found heuristic solution: objective 67.0000000 Optimize a model with 36 rows, 141 columns and 382 nonzeros Presolved: 36 rows, 141 columns, 382 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.890e+02 Factor NZ : 4.680e+02 Factor Ops : 7.290e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.60221418e+02 -1.95331979e+03 1.30e+03 2.22e-16 4.52e+01 0s 1 1.68493845e+02 -8.67059363e+02 1.62e+02 3.33e-16 7.06e+00 0s 2 6.80526264e+01 -2.31534408e+02 7.45e+00 1.11e-15 1.11e+00 0s 3 3.72237730e+01 -3.64869387e+01 3.48e-02 1.48e-15 2.53e-01 0s 4 1.75274184e+01 -3.07166274e+00 7.01e-03 7.60e-16 7.06e-02 0s 5 1.57352352e+01 7.27646408e+00 3.58e-03 9.12e-16 2.90e-02 0s 6 1.47222640e+01 1.33911402e+01 1.04e-03 1.18e-15 4.56e-03 0s 7 1.42905299e+01 1.42677121e+01 1.76e-06 8.60e-16 7.81e-05 0s 8 1.42857191e+01 1.42856963e+01 6.77e-15 8.62e-16 7.81e-08 0s 9 1.42857143e+01 1.42857143e+01 2.64e-14 8.15e-16 8.27e-14 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 1.42857143e+01 Root relaxation: objective 1.428571e+01, 94 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 9 67.00000 14.28571 78.7% - 0s H 0 0 15.0000000 14.28571 4.76% - 0s Explored 0 nodes (122 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: 0.02 seconds Objective: 15 Solution: 2 x [2, 3, 4, 5, 7, 8, 10] 3 x [4, 5, 7, 8, 8, 9, 10] 4 x [1, 1, 5, 6, 7, 7, 9] 1 x [4, 5, 5, 7, 9] 1 x [4, 5, 5, 7, 9, 9] 2 x [2, 6, 7, 8, 10, 10, 10] 1 x [2, 4, 4, 9, 9, 9, 9] 1 x [6, 6, 9, 9, 9]