Build (method = -2) #dp: 7865 Step-3' Graph: 304 vertices and 903 arcs (0.06s) Step-4' Graph: 90 vertices and 475 arcs (0.06s) #V4/#V3 = 0.30 #A4/#A3 = 0.53 Ready! (0.06s) Optimize a model with 134 rows, 476 columns and 1254 nonzeros Presolve removed 31 rows and 60 columns Presolve time: 0.01s Presolved: 103 rows, 416 columns, 1138 nonzeros Variable types: 0 continuous, 416 integer (60 binary) Found heuristic solution: objective 105.0000000 Found heuristic solution: objective 104.0000000 Optimize a model with 103 rows, 416 columns and 1138 nonzeros Presolved: 103 rows, 416 columns, 1138 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.010e+02 Factor NZ : 1.006e+03 Factor Ops : 1.276e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.87344223e+02 -1.22608725e+03 6.49e+02 8.97e-02 8.68e+00 0s 1 1.59245906e+02 -5.61442657e+02 4.46e+01 3.33e-16 1.21e+00 0s 2 6.48234884e+01 -8.20000444e+01 5.39e-01 4.44e-16 1.73e-01 0s 3 2.75017283e+01 5.30433225e-01 5.96e-02 2.78e-16 3.13e-02 0s 4 2.45085513e+01 2.30423953e+01 6.00e-14 2.55e-16 1.70e-03 0s 5 2.40019592e+01 2.39974022e+01 8.09e-14 2.08e-16 5.28e-06 0s 6 2.40000000e+01 2.40000000e+01 5.33e-14 2.22e-16 5.56e-12 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 2.40000000e+01 Root relaxation: objective 2.400000e+01, 296 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 24.0000000 24.00000 0.0% - 0s Explored 0 nodes (296 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0% Preprocessing time: 0.07 seconds Gurobi run time: 0.02 seconds Total run time: 0.09 seconds Objective: 24 Solution: 1 x [22, 22, 34, 42, 44] 4 x [12, 24, 31, 33, 43] 2 x [8, 20, 31, 39, 41] 1 x [1, 1, 11, 39, 41] 1 x [9, 9, 19, 31, 40] 1 x [13, 14, 23, 29, 38] 3 x [17, 23, 27, 35, 37] 2 x [8, 16, 30, 33, 36] 3 x [5, 7, 8, 18, 34] 1 x [2, 8, 14, 28, 32] 1 x [1, 4, 11, 21, 30] 2 x [3, 20, 26, 26, 27] 1 x [2, 6, 15, 16, 25] 1 x [2, 6, 10, 17, 21]