LoadError Invalid coefficient NaN on variable

[pietrobm]

Hello everyone,

I am having an issue that I thought was an easy fix, but I cannot spot the problem so maybe someone here can give me a hand.

I am running my model with a yearly resolution, and if the interval is 2022 to 2045 it works fine, but if I run it from 2022 to 2050 I get the following error:

LoadError: Invalid coefficient NaN on variable unit_flow[Cable_on_elec_node_hewett_aftp, On_elec_node, from_node, realization, 2047-01-01T00:00~>2048-01-01T00:00].

My understanding is that the variable becomes infinite for some reason at 2047. Any tip/advice would be of great help.

Thank you

[manuelma]

@pietrobm try to spot the constraint where this happens. I can help you if you post the entire error traceback. Then we will know which parameter values to look at. Most probably you have a time-series that stops at 2047-01-01T00:00 so whenever SpineOpt asks for values beyond that time to build their constraints, if finds that there are no values and fails.

[pietrobm]

Thank you! I have checked the time series and they all go to 2050...

Yes, here it is:

Stacktrace:
[1] error(s::String)
@ Base .\error.jl:35
[2] _assert_isfinite(a::JuMP.AffExpr)
@ JuMP C:\Users\pietrobianchimarzoli.julia\packages\JuMP\ptoff\src\aff_expr.jl:596
[3] MathOptInterface.ScalarAffineFunction(a::JuMP.AffExpr)
@ JuMP C:\Users\pietrobianchimarzoli.julia\packages\JuMP\ptoff\src\aff_expr.jl:633
[4] moi_function
@ C:\Users\pietrobianchimarzoli.julia\packages\JuMP\ptoff\src\aff_expr.jl:676 [inlined]
[5] set_objective_function(model::JuMP.Model, func::JuMP.AffExpr)
@ JuMP C:\Users\pietrobianchimarzoli.julia\packages\JuMP\ptoff\src\objective.jl:126
[6] set_objective_function(model::JuMP.Model, func::JuMP.GenericAffExpr{SpineInterface.Call, JuMP.VariableRef})
@ SpineInterface C:\Users\pietrobianchimarzoli.julia\packages\SpineInterface\vx8Sx\src\update_model.jl:434
[7] set_objective(model::JuMP.Model, sense::MathOptInterface.OptimizationSense, func::JuMP.GenericAffExpr{SpineInterface.Call, JuMP.VariableRef})
@ JuMP C:\Users\pietrobianchimarzoli.julia\packages\JuMP\ptoff\src\objective.jl:175
[8] macro expansion
@ C:\Users\pietrobianchimarzoli.julia\packages\JuMP\ptoff\src\macros.jl:1505 [inlined]
[9] _set_objective!(m::JuMP.Model; alternative_objective::SpineOpt.var"#90#98")
@ SpineOpt C:\Users\pietrobianchimarzoli.julia\packages\SpineOpt\arFgf\src\run_spineopt_standard.jl:241
[10] macro expansion
@ .\timing.jl:273 [inlined]
[11] macro expansion
@ C:\Users\pietrobianchimarzoli.julia\packages\SpineOpt\arFgf\src\util\misc.jl:51 [inlined]
[12] init_model!(m::JuMP.Model; add_user_variables::Function, add_constraints::Function, log_level::Int64, alternative_objective::Function)
@ SpineOpt C:\Users\pietrobianchimarzoli.julia\packages\SpineOpt\arFgf\src\run_spineopt_standard.jl:99
[13] init_model!
@ C:\Users\pietrobianchimarzoli.julia\packages\SpineOpt\arFgf\src\run_spineopt_standard.jl:90 [inlined]
[14] rerun_spineopt!(m::JuMP.Model, ::Nothing, ::Nothing, url_out::String; add_user_variables::Function, add_constraints::Function, alternative_objective::Function, update_constraints::Function, log_level::Int64, optimize::Bool, update_names::Bool, alternative::String, write_as_roll::Int64, resume_file_path::Nothing)
@ SpineOpt C:\Users\pietrobianchimarzoli.julia\packages\SpineOpt\arFgf\src\run_spineopt_standard.jl:44
[15] rerun_spineopt(url_out::String; mip_solver::Nothing, lp_solver::Nothing, add_user_variables::Function, add_constraints::Function, update_constraints::Function, log_level::Int64, optimize::Bool, update_names::Bool, alternative::String, write_as_roll::Int64, resume_file_path::Nothing, use_direct_model::Bool, alternative_objective::SpineOpt.var"#90#98")
@ SpineOpt C:\Users\pietrobianchimarzoli.julia\packages\SpineOpt\arFgf\src\run_spineopt.jl:283
[16] _run_spineopt(url_in::String, url_out::String; upgrade::Bool, mip_solver::Nothing, lp_solver::Nothing, add_user_variables::Function, add_constraints::Function, update_constraints::Function, log_level::Int64, optimize::Bool, update_names::Bool, alternative::String, write_as_roll::Int64, use_direct_model::Bool, filters::Dict{String, String}, resume_file_path::Nothing)
@ SpineOpt C:\Users\pietrobianchimarzoli.julia\packages\SpineOpt\arFgf\src\run_spineopt.jl:197
[17] _run_spineopt
@ C:\Users\pietrobianchimarzoli.julia\packages\SpineOpt\arFgf\src\run_spineopt.jl:176 [inlined]
[18] #run_spineopt#43
@ C:\Users\pietrobianchimarzoli.julia\packages\SpineOpt\arFgf\src\run_spineopt.jl:105 [inlined]
[19] run_spineopt(url_in::String, url_out::String)
@ SpineOpt C:\Users\pietrobianchimarzoli.julia\packages\SpineOpt\arFgf\src\run_spineopt.jl:85
[20] top-level scope
@ C:\Users\pietrobianchimarzoli.spinetoolbox\work\run_spineopt__d091b2046cf74e33bf004a0a2fd745c0__toolbox\run_spineopt.jl:3
[21] include(fname::String)
@ Base.MainInclude .\client.jl:478
[22] top-level scope
@ none:1
in expression starting at C:\Users\pietrobianchimarzoli.spinetoolbox\work\run_spineopt__d091b2046cf74e33bf004a0a2fd745c0__toolbox\run_spineopt.jl:3

[manuelma]

Thank you @pietrobm
Then maybe we have a bug. I see that the issue appears in the objective function. Any chance you can share the sqlite DB file so I can test it on my end?

[pietrobm]

yes, here it is
InputDB.zip

[manuelma]

thank you, it looks like vom_cost for (Cable_on_elec_node_hewett1_aftp, On_elec_node) for the Decarbonization alternative covers only until 2046??

[pietrobm]

Thank you @manuelma! I kept looking at the first importer without realising there was a discrepancy between the starting years (2018 vs 2022). I have fixed it and it now works. Thanks again!