Build (method = -2) #dp: 8247 Step-3' Graph: 303 vertices and 3476 arcs (0.08s) Step-4' Graph: 209 vertices and 3268 arcs (0.09s) #V4/#V3 = 0.69 #A4/#A3 = 0.94 Ready! (0.09s) Optimize a model with 251 rows, 3269 columns and 9394 nonzeros Presolve removed 8 rows and 10 columns Presolve time: 0.07s Presolved: 243 rows, 3259 columns, 9397 nonzeros Variable types: 0 continuous, 3259 integer (981 binary) Found heuristic solution: objective 83.0000000 Found heuristic solution: objective 81.0000000 Optimize a model with 243 rows, 3259 columns and 9397 nonzeros Presolved: 243 rows, 3259 columns, 9397 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.405e+03 Factor NZ : 1.274e+04 (roughly 2 MBytes of memory) Factor Ops : 8.681e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 7.89818355e+03 -5.73257192e+04 4.34e+04 2.22e-01 9.82e+01 0s 1 2.16459349e+03 -1.66731859e+04 8.74e+03 1.55e-15 1.99e+01 0s 2 5.68521896e+02 -6.70405381e+03 1.31e+03 1.78e-15 3.50e+00 0s 3 2.87239219e+02 -2.16298061e+03 1.50e+02 1.33e-15 5.85e-01 0s 4 1.52411644e+02 -5.92013689e+02 3.53e+01 9.16e-16 1.53e-01 0s 5 1.03533557e+02 -1.43144099e+02 1.50e+01 1.55e-15 4.83e-02 0s 6 8.89586691e+01 -1.02166326e+02 1.02e+01 1.44e-15 3.54e-02 0s 7 8.15266555e+01 -8.64688455e+01 8.71e+00 1.55e-15 3.07e-02 0s 8 5.51570283e+01 -5.28825620e+01 3.99e+00 1.11e-15 1.86e-02 0s 9 3.86359893e+01 -3.12280214e+01 2.47e+00 7.19e-16 1.18e-02 0s 10 2.89298575e+01 -1.55947340e+01 1.62e+00 8.88e-16 7.44e-03 0s 11 2.44399982e+01 -6.22853698e+00 1.10e+00 1.11e-15 5.04e-03 0s 12 2.15446676e+01 2.86525162e+00 7.33e-01 6.94e-16 3.03e-03 0s 13 2.08429780e+01 1.10921182e+01 5.87e-01 6.66e-16 1.58e-03 0s 14 1.99649070e+01 1.34693378e+01 4.46e-01 6.59e-16 1.05e-03 0s 15 1.83022705e+01 1.50152240e+01 8.85e-02 6.94e-16 5.11e-04 0s 16 1.79181079e+01 1.61651595e+01 4.98e-02 7.05e-16 2.72e-04 0s 17 1.74651146e+01 1.69489164e+01 6.34e-03 5.46e-16 7.93e-05 0s 18 1.74108501e+01 1.71957884e+01 3.46e-03 1.33e-15 3.31e-05 0s 19 1.73679419e+01 1.72462178e+01 1.53e-03 1.33e-15 1.87e-05 0s 20 1.73397898e+01 1.72987473e+01 3.38e-04 8.51e-16 6.29e-06 0s 21 1.73306293e+01 1.73278258e+01 1.01e-05 1.11e-15 4.29e-07 0s 22 1.73300349e+01 1.73299182e+01 2.26e-07 6.66e-16 1.79e-08 0s 23 1.73300000e+01 1.73299999e+01 1.46e-12 8.88e-16 1.80e-11 0s Barrier solved model in 23 iterations and 0.08 seconds Optimal objective 1.73300000e+01 Root relaxation: objective 1.733000e+01, 1296 iterations, 0.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17.33000 0 64 81.00000 17.33000 78.6% - 0s H 0 0 19.0000000 17.33000 8.79% - 0s H 0 0 18.0000000 17.33000 3.72% - 0s Explored 0 nodes (2310 simplex iterations) in 0.46 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0% Preprocessing time: 0.11 seconds Gurobi run time: 0.46 seconds Total run time: 0.57 seconds Objective: 18 Solution: 1 x [40, 40, 41, 41, 42] 1 x [33, 34, 36, 40, 41] 1 x [29, 37, 37, 38, 39] 1 x [34, 34, 36, 38] 1 x [17, 17, 17, 34, 35] 1 x [5, 5, 9, 15, 28, 32] 1 x [1, 2, 12, 20, 27, 32] 1 x [1, 4, 5, 21, 30, 31] 1 x [2, 3, 10, 24, 25, 30] 1 x [6, 8, 11, 16, 26, 29] 1 x [6, 8, 12, 15, 26, 29] 1 x [11, 14, 14, 14, 17, 29] 1 x [6, 11, 13, 18, 24, 28] 1 x [8, 8, 15, 20, 23, 28] 1 x [5, 14, 14, 19, 28] 1 x [7, 8, 13, 20, 26, 26] 1 x [3, 11, 18, 20, 22] 1 x [17, 17, 17, 17, 19, 19]