%%%%%%%%%%%%%%%%%%%%%  Basic options

op(400, xfx, [*,+,^,v,/,\,#]).  % infix operators
op(300,yf,@).                   % postfix operator

clear(print_kept).
clear(print_new_demod).
clear(print_back_demod).

assign(pick_given_ratio, 4).
assign(max_mem, 20000).

%%%%%%%%%%%%%%%%%%%%%  Standard for (gL) problems

set(geometric_rule).
set(geometric_rewrite_before).
set(para_from).
set(para_into).
set(para_from_vars).
set(para_into_vars).
set(order_eq).
set(back_demod).
set(process_input).
set(lrpo).

%%%%%%%%%%%%%%%%%%%%%  Standard options for hyperresolution

set(output_sequent).
set(hyper_res).
set(order_history).
set(unit_deletion).
set(para_from_units_only).
set(para_into_units_only).

%%%%%%%%%%%%%%%%%%%%%  Modifications to strategy

% clear(process_input).
% clear(back_demod).
% clear(dynamic_demod).
assign(max_weight, 17).
clear(lrpo).

%%%%%%%%%%%%%%%%%%%%%  Clauses

list(usable).
x = x.
x * y != u | x * z != u | y = z.  % left cancellation
y * x != u | z * x != u | y = z.  % right cancellation
end_of_list.

list(sos).
(x * x) * y = x * (x * y).
(x * y) * x = x * (y * x).
end_of_list.

list(passive).
B * A != A * B.
end_of_list.