sol.t; idxs= [sys.adder1.c, sys.adder2.c]).u rtol=1e-3

path_to_FMU=joinpath(FMU_DIR,"SimpleArrayModel.fmu")

fmu=loadFMU(path_to_FMU)

@named model= MTK.FMIComponent(Val(2); fmu, type=:ME)

@test model!==nothing

functionbuild_looped_sspace(sspace1, sspace2)

@variablesx(t)=1

@mtkcompile sys=System([D(x)~ x, sspace1.u~ sspace2.x, sspace2.u~ sspace1.y],

SimpleArrayModel.fmu is a v2 ME FMU that contains multidimensional array variables with derivatives. It is included to test SciML issue number 3934. It is generated from the Modelica model in test_mtk_2darray_bug.mo using Dymola 2022x. The translation command is

translateModelFMU("SimpleArrayModel",false,"","2","me",true,0,fill("",0));

parameterInteger n=3"First dimension size";

parameterInteger m=2"Second dimension size";

Real x[n,m]"Two-dimensional array variable";

Real dx[n,m]"Derivative of the array variable";

der(x)= dx;

for i in1:nloop

for j in1:mloop

dx[i,j]=-x[i,j]+sin(time);

end for;

end for;

x=zeros(n,m);

end SimpleArrayModel;