ERROR (VACOMP-2077):

 Dear all,

I have this code:

module CalculateTheNewWeight11(y11,y12,y13,y21,y22,y23,y31,y32,y33,out);
input y11,y12,y13,y21,y22,y23,y31,y32,y33;
output out;
electrical y11,y12,y13,y21,y22,y23,y31,y32,y33,gnd,out,e,standard;
real A11;
//real parameter eatah=0.5;
analog begin
@(initial_step)begin
A11=1;
end
V(gnd)<+ 0;
V(standard)<+ 1;
V(e)<+(V(y11,gnd)+V(y12,gnd)+V(y13,gnd)+V(y21,gnd)+V(y23,gnd)+V(y31,gnd)+V(y32,gnd)+V(y33,gnd))-(8*V(standard));
A11=A11+0.5*V(e);
I(out,gnd)<+ I(y11,gnd)*A11;
end
endmodule

But I got this error:

Error found by spectre during AHDL read-in.
    ERROR (VACOMP-2077): "/home/Chua3/CalculateTheWeightR21/veriloga/veriloga.va", near line 20: Encountered illegal use of both the potential and the flow of a pure probe branch (y21_gnd). Use either the potential or the flow of a pure probe branch, but not both.
    ERROR (VACOMP-1816): Exiting AHDL compilation.

Opening directory input.ahdlSimDB/ (775)
Opening directory input.ahdlSimDB/2328_thesis_Chua3_CalculateTheWeightR23_veriloga_veriloga.va.CalculateTheWeightR23.ahdlcmi/ (775)
Opening directory input.ahdlSimDB/2328_thesis_Chua3_CalculateTheWeightR23_veriloga_veriloga.va.CalculateTheWeightR23.ahdlcmi/Linux2.6.18-371.9.1.el5-64+gcc/ (775)

Error found by spectre during AHDL read-in.
    ERROR (VACOMP-2077): "/home/Chua3/CalculateTheWeightR23/veriloga/veriloga.va", near line 20: Encountered illegal use of both the potential and the flow of a pure probe branch (y23_gnd). Use either the potential or the flow of a pure probe branch, but not both.
    ERROR (VACOMP-1816): Exiting AHDL compilation.

Opening directory input.ahdlSimDB/ (775)
Opening directory input.ahdlSimDB/2328_thesis_Chua3_CalculateTheWeightR31_veriloga_veriloga.va.CalculateTheWeightR312.ahdlcmi/ (775)
Opening directory input.ahdlSimDB/2328_thesis_Chua3_CalculateTheWeightR31_veriloga_veriloga.va.CalculateTheWeightR312.ahdlcmi/Linux2.6.18-371.9.1.el5-64+gcc/ (775)

Error found by spectre during AHDL read-in.
    ERROR (VACOMP-2077): "/home/thesis/Chua3/CalculateTheWeightR31/veriloga/veriloga.va", near line 20: Encountered illegal use of both the potential and the flow of a pure probe branch (y31_gnd). Use either the potential or the flow of a pure probe branch, but not both.
    ERROR (VACOMP-1816): Exiting AHDL compilation.

Opening directory input.ahdlSimDB/ (775)
Opening directory input.ahdlSimDB/2328_thesis_Chua3_CalculateTheWeightR32_veriloga_veriloga.va.CalculateTheWeightR32.ahdlcmi/ (775)
Opening directory input.ahdlSimDB/2328_thesis_Chua3_CalculateTheWeightR32_veriloga_veriloga.va.CalculateTheWeightR32.ahdlcmi/Linux2.6.18-371.9.1.el5-64+gcc/ (775)

Error found by spectre during AHDL read-in.
    ERROR (VACOMP-2077): "/home/thesis/Chua3/CalculateTheWeightR32/veriloga/veriloga.va", near line 20: Encountered illegal use of both the potential and the flow of a pure probe branch (y32_gnd). Use either the potential or the flow of a pure probe branch, but not both.
    ERROR (VACOMP-1816): Exiting AHDL compilation.

Opening directory input.ahdlSimDB/ (775)
Opening directory input.ahdlSimDB/2328_thesis_Chua3_CalculateTheWeightR33_veriloga_veriloga.va.CalculateTheWeightR33.ahdlcmi/ (775)
Opening directory input.ahdlSimDB/2328_thesis_Chua3_CalculateTheWeightR33_veriloga_veriloga.va.CalculateTheWeightR33.ahdlcmi/Linux2.6.18-371.9.1.el5-64+gcc/ (775)

Error found by spectre during AHDL read-in.
    ERROR (VACOMP-2077): "/home/thesis/Chua3/CalculateTheWeightR33/veriloga/veriloga.va", near line 20: Encountered illegal use of both the potential and the flow of a pure probe branch (y33_gnd). Use either the potential or the flow of a pure probe branch, but not both.
    ERROR (VACOMP-1816): Exiting AHDL compilation.

Opening directory input.ahdlSimDB/ (775)
Opening directory input.ahdlSimDB/2328_thesis_Chua3_CalculateTheWeightR13_veriloga_veriloga.va.CalculateTheWeightR13.ahdlcmi/ (775)
Opening directory input.ahdlSimDB/2328_thesis_Chua3_CalculateTheWeightR13_veriloga_veriloga.va.CalculateTheWeightR13.ahdlcmi/Linux2.6.18-371.9.1.el5-64+gcc/ (775)

Error found by spectre during AHDL read-in.
    ERROR (VACOMP-2077): "/home/thesis/Chua3/CalculateTheWeightR13/veriloga/veriloga.va", near line 20: Encountered illegal use of both the potential and the flow of a pure probe branch (y13_gnd). Use either the potential or the flow of a pure probe branch, but not both.
    ERROR (VACOMP-1816): Exiting AHDL compilation.

Opening directory input.ahdlSimDB/ (775)
Opening directory input.ahdlSimDB/2328_thesis_Chua3_CalculateTheWeightR12_veriloga_veriloga.va.CalculateTheWeightR12.ahdlcmi/ (775)
Opening directory input.ahdlSimDB/2328_thesis_Chua3_CalculateTheWeightR12_veriloga_veriloga.va.CalculateTheWeightR12.ahdlcmi/Linux2.6.18-371.9.1.el5-64+gcc/ (775)

Error found by spectre during AHDL read-in.
    ERROR (VACOMP-2077): "/home/thesis/Chua3/CalculateTheWeightR12/veriloga/veriloga.va", near line 20: Encountered illegal use of both the potential and the flow of a pure probe branch (y12_gnd). Use either the potential or the flow of a pure probe branch, but not both.
    ERROR (VACOMP-1816): Exiting AHDL compilation.

Opening directory input.ahdlSimDB/ (775)
Opening directory input.ahdlSimDB/2328_thesis_Chua3_CalculateTheNewWeight11_veriloga_veriloga.va.CalculateTheNewWeight11.ahdlcmi/ (775)
Opening directory input.ahdlSimDB/2328_thesis_Chua3_CalculateTheNewWeight11_veriloga_veriloga.va.CalculateTheNewWeight11.ahdlcmi/Linux2.6.18-371.9.1.el5-64+gcc/ (775)

Error found by spectre during AHDL read-in.
    ERROR (VACOMP-2077): "/home/thesis/Chua3/CalculateTheNewWeight11/veriloga/veriloga.va", near line 20: Encountered illegal use of both the potential and the flow of a pure probe branch (y11_gnd). Use either the potential or the flow of a pure probe branch, but not both.
    ERROR (VACOMP-1816): Exiting AHDL compilation.
                                                                                                                                                                                                                                                       
I will appreciate any kind of help.

Thanks,

Sali