%   ORIGINAL: h4/list/isPREFIX__THM_c1
% Assm: HL_TRUTH: T
% Assm: HL_FALSITY: ~F
% Assm: HL_BOOL_CASES: !t. (t <=> T) \/ (t <=> F)
% Assm: HL_EXT: !f g. (!x. f x = g x) ==> f = g
% Assm: h4/bool/TRUTH: T
% Assm: h4/bool/NOT__CLAUSES_c2: ~F <=> T
% Assm: h4/bool/EQ__SYM__EQ: !y x. x = y <=> y = x
% Assm: h4/bool/EQ__CLAUSES_c2: !t. (F <=> t) <=> ~t
% Assm: h4/list/list__case__def_c0: !v f. h4/list/list__CASE h4/list/NIL v f = v
% Assm: h4/list/isPREFIX0_c1: !t l h. h4/list/isPREFIX (h4/list/CONS h t) l <=> h4/list/list__CASE l F (\h_27 t_27. h = h_27 /\ h4/list/isPREFIX t t_27)
% Goal: !t h. h4/list/isPREFIX (h4/list/CONS h t) h4/list/NIL <=> F
%   PROCESSED
% Assm [HLu_TRUTH]: T
% Assm [HLu_FALSITY]: ~F
% Assm [HLu_BOOLu_CASES]: !t. (t <=> T) \/ (t <=> F)
% Assm [HLu_EXT]: !f g. (!x. happ f x = happ g x) ==> f = g
% Assm [h4s_bools_TRUTH]: T
% Assm [h4s_bools_NOTu_u_CLAUSESu_c2]: ~F <=> T
% Assm [h4s_bools_EQu_u_SYMu_u_EQ]: !y x. x = y <=> y = x
% Assm [h4s_bools_EQu_u_CLAUSESu_c2]: !t. (F <=> t) <=> ~t
% Assm [h4s_lists_listu_u_caseu_u_defu_c0]: !v f. h4/list/list__CASE h4/list/NIL v f = v
% Assm [h4s_lists_isPREFIX0u_c1]: !_1. (!h h_27 t t_27. happ (happ (happ (happ _1 h) h_27) t) t_27 <=> h = h_27 /\ h4/list/isPREFIX t t_27) ==> (!_0. (!h t h_27. happ (happ (happ _0 h) t) h_27 = happ (happ (happ _1 h) h_27) t) ==> (!t l h. h4/list/isPREFIX (h4/list/CONS h t) l <=> h4/list/list__CASE l F (happ (happ _0 h) t)))
% Goal: !t h. h4/list/isPREFIX (h4/list/CONS h t) h4/list/NIL <=> F
fof(aHLu_TRUTH, axiom, p(s(t_bool,t0))).
fof(aHLu_FALSITY, axiom, ~ (p(s(t_bool,f)))).
fof(aHLu_BOOLu_CASES, axiom, ![V_t]: (s(t_bool,V_t) = s(t_bool,t0) | s(t_bool,V_t) = s(t_bool,f))).
fof(aHLu_EXT, axiom, ![TV_Q245157,TV_Q245153]: ![V_f, V_g]: (![V_x]: s(TV_Q245153,happ(s(t_fun(TV_Q245157,TV_Q245153),V_f),s(TV_Q245157,V_x))) = s(TV_Q245153,happ(s(t_fun(TV_Q245157,TV_Q245153),V_g),s(TV_Q245157,V_x))) => s(t_fun(TV_Q245157,TV_Q245153),V_f) = s(t_fun(TV_Q245157,TV_Q245153),V_g))).
fof(ah4s_bools_TRUTH, axiom, p(s(t_bool,t0))).
fof(ah4s_bools_NOTu_u_CLAUSESu_c2, axiom, (~ (p(s(t_bool,f))) <=> p(s(t_bool,t0)))).
fof(ah4s_bools_EQu_u_SYMu_u_EQ, axiom, ![TV_u_27a]: ![V_y, V_x]: (s(TV_u_27a,V_x) = s(TV_u_27a,V_y) <=> s(TV_u_27a,V_y) = s(TV_u_27a,V_x))).
fof(ah4s_bools_EQu_u_CLAUSESu_c2, axiom, ![V_t]: (s(t_bool,f) = s(t_bool,V_t) <=> ~ (p(s(t_bool,V_t))))).
fof(ah4s_lists_listu_u_caseu_u_defu_c0, axiom, ![TV_u_27a,TV_u_27b]: ![V_v, V_f]: s(TV_u_27b,h4s_lists_listu_u_case(s(t_h4s_lists_list(TV_u_27a),h4s_lists_nil),s(TV_u_27b,V_v),s(t_fun(TV_u_27a,t_fun(t_h4s_lists_list(TV_u_27a),TV_u_27b)),V_f))) = s(TV_u_27b,V_v)).
fof(ah4s_lists_isPREFIX0u_c1, axiom, ![TV_u_27a]: ![V_uu_1]: (![V_h, V_hu_27, V_t, V_tu_27]: (p(s(t_bool,happ(s(t_fun(t_h4s_lists_list(TV_u_27a),t_bool),happ(s(t_fun(t_h4s_lists_list(TV_u_27a),t_fun(t_h4s_lists_list(TV_u_27a),t_bool)),happ(s(t_fun(TV_u_27a,t_fun(t_h4s_lists_list(TV_u_27a),t_fun(t_h4s_lists_list(TV_u_27a),t_bool))),happ(s(t_fun(TV_u_27a,t_fun(TV_u_27a,t_fun(t_h4s_lists_list(TV_u_27a),t_fun(t_h4s_lists_list(TV_u_27a),t_bool)))),V_uu_1),s(TV_u_27a,V_h))),s(TV_u_27a,V_hu_27))),s(t_h4s_lists_list(TV_u_27a),V_t))),s(t_h4s_lists_list(TV_u_27a),V_tu_27)))) <=> (s(TV_u_27a,V_h) = s(TV_u_27a,V_hu_27) & p(s(t_bool,h4s_lists_isprefix(s(t_h4s_lists_list(TV_u_27a),V_t),s(t_h4s_lists_list(TV_u_27a),V_tu_27)))))) => ![V_uu_0]: (![V_h, V_t, V_hu_27]: s(t_fun(t_h4s_lists_list(TV_u_27a),t_bool),happ(s(t_fun(TV_u_27a,t_fun(t_h4s_lists_list(TV_u_27a),t_bool)),happ(s(t_fun(t_h4s_lists_list(TV_u_27a),t_fun(TV_u_27a,t_fun(t_h4s_lists_list(TV_u_27a),t_bool))),happ(s(t_fun(TV_u_27a,t_fun(t_h4s_lists_list(TV_u_27a),t_fun(TV_u_27a,t_fun(t_h4s_lists_list(TV_u_27a),t_bool)))),V_uu_0),s(TV_u_27a,V_h))),s(t_h4s_lists_list(TV_u_27a),V_t))),s(TV_u_27a,V_hu_27))) = s(t_fun(t_h4s_lists_list(TV_u_27a),t_bool),happ(s(t_fun(t_h4s_lists_list(TV_u_27a),t_fun(t_h4s_lists_list(TV_u_27a),t_bool)),happ(s(t_fun(TV_u_27a,t_fun(t_h4s_lists_list(TV_u_27a),t_fun(t_h4s_lists_list(TV_u_27a),t_bool))),happ(s(t_fun(TV_u_27a,t_fun(TV_u_27a,t_fun(t_h4s_lists_list(TV_u_27a),t_fun(t_h4s_lists_list(TV_u_27a),t_bool)))),V_uu_1),s(TV_u_27a,V_h))),s(TV_u_27a,V_hu_27))),s(t_h4s_lists_list(TV_u_27a),V_t))) => ![V_t, V_l, V_h]: s(t_bool,h4s_lists_isprefix(s(t_h4s_lists_list(TV_u_27a),h4s_lists_cons(s(TV_u_27a,V_h),s(t_h4s_lists_list(TV_u_27a),V_t))),s(t_h4s_lists_list(TV_u_27a),V_l))) = s(t_bool,h4s_lists_listu_u_case(s(t_h4s_lists_list(TV_u_27a),V_l),s(t_bool,f),s(t_fun(TV_u_27a,t_fun(t_h4s_lists_list(TV_u_27a),t_bool)),happ(s(t_fun(t_h4s_lists_list(TV_u_27a),t_fun(TV_u_27a,t_fun(t_h4s_lists_list(TV_u_27a),t_bool))),happ(s(t_fun(TV_u_27a,t_fun(t_h4s_lists_list(TV_u_27a),t_fun(TV_u_27a,t_fun(t_h4s_lists_list(TV_u_27a),t_bool)))),V_uu_0),s(TV_u_27a,V_h))),s(t_h4s_lists_list(TV_u_27a),V_t)))))))).
fof(ch4s_lists_isPREFIXu_u_THMu_c1, conjecture, ![TV_u_27a]: ![V_t, V_h]: s(t_bool,h4s_lists_isprefix(s(t_h4s_lists_list(TV_u_27a),h4s_lists_cons(s(TV_u_27a,V_h),s(t_h4s_lists_list(TV_u_27a),V_t))),s(t_h4s_lists_list(TV_u_27a),h4s_lists_nil))) = s(t_bool,f)).
