Build (method = -2) #dp: 8787 Step-3' Graph: 318 vertices and 3800 arcs (0.06s) Step-4' Graph: 205 vertices and 3454 arcs (0.06s) #V4/#V3 = 0.64 #A4/#A3 = 0.91 Ready! (0.06s) Optimize a model with 250 rows, 3455 columns and 9960 nonzeros Presolve removed 4 rows and 5 columns Presolve time: 0.05s Presolved: 246 rows, 3450 columns, 9958 nonzeros Variable types: 0 continuous, 3450 integer (610 binary) Found heuristic solution: objective 101.0000000 Found heuristic solution: objective 82.0000000 Optimize a model with 246 rows, 3450 columns and 9958 nonzeros Presolved: 246 rows, 3450 columns, 9958 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.707e+03 Factor NZ : 1.302e+04 (roughly 2 MBytes of memory) Factor Ops : 9.038e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.39291693e+03 -5.44207995e+04 3.78e+04 2.05e-01 8.54e+01 0s 1 1.95266548e+03 -1.56063014e+04 7.61e+03 1.11e-15 1.73e+01 0s 2 4.97379943e+02 -6.83291144e+03 9.86e+02 3.55e-15 2.83e+00 0s 3 2.53808554e+02 -2.05535787e+03 1.20e+02 2.22e-15 4.90e-01 0s 4 1.58000345e+02 -7.31419737e+02 3.67e+01 3.44e-15 1.65e-01 0s 5 1.28376836e+02 -4.65122318e+02 2.06e+01 2.44e-15 1.03e-01 0s 6 1.27281718e+02 -2.81464076e+02 1.99e+01 1.55e-15 7.17e-02 0s 7 1.24137101e+02 -2.48424907e+02 1.81e+01 1.67e-15 6.46e-02 0s 8 1.12132483e+02 -1.89611912e+02 1.26e+01 1.44e-15 5.04e-02 0s 9 8.84226509e+01 -1.19570285e+02 7.59e+00 8.57e-16 3.38e-02 0s 10 5.42916754e+01 -7.73723404e+01 3.61e+00 8.05e-16 2.06e-02 0s 11 4.28337114e+01 -6.59994384e+01 2.67e+00 8.81e-16 1.69e-02 0s 12 3.35169496e+01 -3.28653737e+01 1.78e+00 7.34e-16 1.02e-02 0s 13 2.74404077e+01 -9.26848827e-01 1.05e+00 8.02e-16 4.33e-03 0s 14 2.49166833e+01 1.08593830e+01 6.16e-01 7.03e-16 2.12e-03 0s 15 2.38459521e+01 1.77857082e+01 3.74e-01 7.04e-16 9.09e-04 0s 16 2.24944987e+01 1.97705794e+01 1.51e-01 6.57e-16 4.03e-04 0s 17 2.15722812e+01 2.07931699e+01 1.67e-02 6.57e-16 1.13e-04 0s 18 2.14317842e+01 2.10566024e+01 5.83e-03 6.74e-16 5.44e-05 0s 19 2.13537774e+01 2.12062385e+01 1.48e-03 6.83e-16 2.13e-05 0s 20 2.13306139e+01 2.12920585e+01 4.62e-04 7.77e-16 5.58e-06 0s 21 2.13188619e+01 2.13172515e+01 1.94e-05 6.02e-16 2.33e-07 0s 22 2.13181825e+01 2.13181798e+01 2.05e-08 6.59e-16 3.91e-10 0s 23 2.13181818e+01 2.13181818e+01 1.02e-13 5.33e-16 3.91e-13 0s Barrier solved model in 23 iterations and 0.06 seconds Optimal objective 2.13181818e+01 Root relaxation: objective 2.131818e+01, 1360 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 21.31818 0 80 82.00000 21.31818 74.0% - 0s H 0 0 30.0000000 21.31818 28.9% - 0s H 0 0 23.0000000 21.31818 7.31% - 0s H 0 0 22.0000000 21.31818 3.10% - 0s Explored 0 nodes (2678 simplex iterations) in 0.36 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0% Preprocessing time: 0.07 seconds Gurobi run time: 0.36 seconds Total run time: 0.43 seconds Objective: 22 Solution: 1 x [43, 43, 43, 44, 45] 1 x [21, 33, 40, 44, 45] 2 x [30, 36, 38, 44, 45] 1 x [33, 36, 40, 42, 45] 1 x [33, 33, 34, 42, 45] 1 x [37, 41, 42, 42, 45] 1 x [33, 35, 39, 41, 44] 1 x [8, 13, 17, 31, 40] 1 x [2, 7, 8, 10, 30, 32] 1 x [3, 4, 11, 20, 23, 32] 1 x [1, 1, 13, 32] 1 x [4, 7, 9, 10, 30, 31] 1 x [2, 7, 10, 14, 28, 31] 1 x [3, 7, 9, 18, 24, 31] 1 x [8, 12, 12, 16, 16, 29] 1 x [6, 9, 11, 17, 22, 27] 1 x [5, 12, 14, 19, 27] 1 x [3, 4, 15, 20, 26, 26] 1 x [6, 11, 14, 17, 20, 25] 1 x [5, 12, 12, 19, 22, 23] 1 x [6, 11, 17, 18, 20, 21]