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Commit 6dd32e1a authored by Jean-Christophe Filliâtre's avatar Jean-Christophe Filliâtre
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knuth_prime_numbers: cleaning up

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(* This file is generated by Why3's Coq driver *)
(* Beware! Only edit allowed sections below *)
Require Import ZArith.
Require Import Rbase.
Require Import ZOdiv.
Require Import Zdiv.
Definition unit := unit.
Parameter mark : Type.
Parameter at1: forall (a:Type), a -> mark -> a.
Implicit Arguments at1.
Parameter old: forall (a:Type), a -> a.
Implicit Arguments old.
Axiom Abs_pos : forall (x:Z), (0%Z <= (Zabs x))%Z.
Axiom Div_mod : forall (x:Z) (y:Z), (~ (y = 0%Z)) ->
(x = ((y * (ZOdiv x y))%Z + (ZOmod x y))%Z).
Axiom Div_bound : forall (x:Z) (y:Z), ((0%Z <= x)%Z /\ (0%Z < y)%Z) ->
((0%Z <= (ZOdiv x y))%Z /\ ((ZOdiv x y) <= x)%Z).
Axiom Mod_bound : forall (x:Z) (y:Z), (~ (y = 0%Z)) ->
(((-(Zabs y))%Z < (ZOmod x y))%Z /\ ((ZOmod x y) < (Zabs y))%Z).
Axiom Div_sign_pos : forall (x:Z) (y:Z), ((0%Z <= x)%Z /\ (0%Z < y)%Z) ->
(0%Z <= (ZOdiv x y))%Z.
Axiom Div_sign_neg : forall (x:Z) (y:Z), ((x <= 0%Z)%Z /\ (0%Z < y)%Z) ->
((ZOdiv x y) <= 0%Z)%Z.
Axiom Mod_sign_pos : forall (x:Z) (y:Z), ((0%Z <= x)%Z /\ ~ (y = 0%Z)) ->
(0%Z <= (ZOmod x y))%Z.
Axiom Mod_sign_neg : forall (x:Z) (y:Z), ((x <= 0%Z)%Z /\ ~ (y = 0%Z)) ->
((ZOmod x y) <= 0%Z)%Z.
Axiom Rounds_toward_zero : forall (x:Z) (y:Z), (~ (y = 0%Z)) ->
((Zabs ((ZOdiv x y) * y)%Z) <= (Zabs x))%Z.
Axiom Div_1 : forall (x:Z), ((ZOdiv x 1%Z) = x).
Axiom Mod_1 : forall (x:Z), ((ZOmod x 1%Z) = 0%Z).
Axiom Div_inf : forall (x:Z) (y:Z), ((0%Z <= x)%Z /\ (x < y)%Z) ->
((ZOdiv x y) = 0%Z).
Axiom Mod_inf : forall (x:Z) (y:Z), ((0%Z <= x)%Z /\ (x < y)%Z) ->
((ZOmod x y) = x).
Axiom Div_mult : forall (x:Z) (y:Z) (z:Z), ((0%Z < x)%Z /\ ((0%Z <= y)%Z /\
(0%Z <= z)%Z)) -> ((ZOdiv ((x * y)%Z + z)%Z x) = (y + (ZOdiv z x))%Z).
Axiom Mod_mult : forall (x:Z) (y:Z) (z:Z), ((0%Z < x)%Z /\ ((0%Z <= y)%Z /\
(0%Z <= z)%Z)) -> ((ZOmod ((x * y)%Z + z)%Z x) = (ZOmod z x)).
Definition lt_nat(x:Z) (y:Z): Prop := (0%Z <= y)%Z /\ (x < y)%Z.
Inductive lex : (Z* Z)%type -> (Z* Z)%type -> Prop :=
| Lex_1 : forall (x1:Z) (x2:Z) (y1:Z) (y2:Z), (lt_nat x1 x2) -> (lex (x1,
y1) (x2, y2))
| Lex_2 : forall (x:Z) (y1:Z) (y2:Z), (lt_nat y1 y2) -> (lex (x, y1) (x,
y2)).
Definition even(n:Z): Prop := exists k:Z, (n = (2%Z * k)%Z).
Definition odd(n:Z): Prop := exists k:Z, (n = ((2%Z * k)%Z + 1%Z)%Z).
Axiom even_or_odd : forall (n:Z), (even n) \/ (odd n).
Axiom even_not_odd : forall (n:Z), (even n) -> ~ (odd n).
Axiom odd_not_even : forall (n:Z), (odd n) -> ~ (even n).
Axiom even_odd : forall (n:Z), (even n) -> (odd (n + 1%Z)%Z).
Axiom odd_even : forall (n:Z), (odd n) -> (even (n + 1%Z)%Z).
Axiom even_even : forall (n:Z), (even n) -> (even (n + 2%Z)%Z).
Axiom odd_odd : forall (n:Z), (odd n) -> (odd (n + 2%Z)%Z).
Axiom even_2k : forall (k:Z), (even (2%Z * k)%Z).
Axiom odd_2k1 : forall (k:Z), (odd ((2%Z * k)%Z + 1%Z)%Z).
Definition divides(d:Z) (n:Z): Prop := exists q:Z, (n = (q * d)%Z).
Axiom divides_refl : forall (n:Z), (divides n n).
Axiom divides_1_n : forall (n:Z), (divides 1%Z n).
Axiom divides_0 : forall (n:Z), (divides n 0%Z).
Axiom divides_left : forall (a:Z) (b:Z) (c:Z), (divides a b) ->
(divides (c * a)%Z (c * b)%Z).
Axiom divides_right : forall (a:Z) (b:Z) (c:Z), (divides a b) ->
(divides (a * c)%Z (b * c)%Z).
Axiom divides_oppr : forall (a:Z) (b:Z), (divides a b) -> (divides a (-b)%Z).
Axiom divides_oppl : forall (a:Z) (b:Z), (divides a b) -> (divides (-a)%Z b).
Axiom divides_oppr_rev : forall (a:Z) (b:Z), (divides (-a)%Z b) -> (divides a
b).
Axiom divides_oppl_rev : forall (a:Z) (b:Z), (divides a (-b)%Z) -> (divides a
b).
Axiom divides_plusr : forall (a:Z) (b:Z) (c:Z), (divides a b) -> ((divides a
c) -> (divides a (b + c)%Z)).
Axiom divides_minusr : forall (a:Z) (b:Z) (c:Z), (divides a b) -> ((divides a
c) -> (divides a (b - c)%Z)).
Axiom divides_multl : forall (a:Z) (b:Z) (c:Z), (divides a b) -> (divides a
(c * b)%Z).
Axiom divides_multr : forall (a:Z) (b:Z) (c:Z), (divides a b) -> (divides a
(b * c)%Z).
Axiom divides_factorl : forall (a:Z) (b:Z), (divides a (b * a)%Z).
Axiom divides_factorr : forall (a:Z) (b:Z), (divides a (a * b)%Z).
Axiom divides_n_1 : forall (n:Z), (divides n 1%Z) -> ((n = 1%Z) \/
(n = (-1%Z)%Z)).
Axiom divides_antisym : forall (a:Z) (b:Z), (divides a b) -> ((divides b
a) -> ((a = b) \/ (a = (-b)%Z))).
Axiom divides_trans : forall (a:Z) (b:Z) (c:Z), (divides a b) -> ((divides b
c) -> (divides a c)).
Axiom divides_bounds : forall (a:Z) (b:Z), (divides a b) -> ((~ (b = 0%Z)) ->
((Zabs a) <= (Zabs b))%Z).
Axiom Div_mod1 : forall (x:Z) (y:Z), (~ (y = 0%Z)) ->
(x = ((y * (Zdiv x y))%Z + (Zmod x y))%Z).
Axiom Div_bound1 : forall (x:Z) (y:Z), ((0%Z <= x)%Z /\ (0%Z < y)%Z) ->
((0%Z <= (Zdiv x y))%Z /\ ((Zdiv x y) <= x)%Z).
Axiom Mod_bound1 : forall (x:Z) (y:Z), (~ (y = 0%Z)) ->
((0%Z <= (Zmod x y))%Z /\ ((Zmod x y) < (Zabs y))%Z).
Axiom Mod_11 : forall (x:Z), ((Zmod x 1%Z) = 0%Z).
Axiom Div_11 : forall (x:Z), ((Zdiv x 1%Z) = x).
Axiom mod_divides : forall (a:Z) (b:Z), (~ (b = 0%Z)) ->
(((Zmod a b) = 0%Z) -> (divides b a)).
Axiom divides_mod : forall (a:Z) (b:Z), (~ (b = 0%Z)) -> ((divides b a) ->
((Zmod a b) = 0%Z)).
Axiom even_divides : forall (a:Z), (even a) <-> (divides 2%Z a).
Axiom odd_divides : forall (a:Z), (odd a) <-> ~ (divides 2%Z a).
Definition prime(p:Z): Prop := (2%Z <= p)%Z /\ forall (n:Z), ((1%Z < n)%Z /\
(n < p)%Z) -> ~ (divides n p).
Axiom not_prime_1 : ~ (prime 1%Z).
Axiom prime_2 : (prime 2%Z).
Axiom prime_3 : (prime 3%Z).
Axiom prime_divisors : forall (p:Z), (prime p) -> forall (d:Z), (divides d
p) -> ((d = 1%Z) \/ ((d = (-1%Z)%Z) \/ ((d = p) \/ (d = (-p)%Z)))).
Axiom even_prime : forall (p:Z), (prime p) -> ((even p) -> (p = 2%Z)).
Axiom odd_prime : forall (p:Z), (prime p) -> ((3%Z <= p)%Z -> (odd p)).
Inductive ref (a:Type) :=
| mk_ref : a -> ref a.
Implicit Arguments mk_ref.
Definition contents (a:Type)(u:(ref a)): a :=
match u with
| mk_ref contents1 => contents1
end.
Implicit Arguments contents.
Parameter map : forall (a:Type) (b:Type), Type.
Parameter get: forall (a:Type) (b:Type), (map a b) -> a -> b.
Implicit Arguments get.
Parameter set: forall (a:Type) (b:Type), (map a b) -> a -> b -> (map a b).
Implicit Arguments set.
Axiom Select_eq : forall (a:Type) (b:Type), forall (m:(map a b)),
forall (a1:a) (a2:a), forall (b1:b), (a1 = a2) -> ((get (set m a1 b1)
a2) = b1).
Axiom Select_neq : forall (a:Type) (b:Type), forall (m:(map a b)),
forall (a1:a) (a2:a), forall (b1:b), (~ (a1 = a2)) -> ((get (set m a1 b1)
a2) = (get m a2)).
Parameter const: forall (b:Type) (a:Type), b -> (map a b).
Set Contextual Implicit.
Implicit Arguments const.
Unset Contextual Implicit.
Axiom Const : forall (b:Type) (a:Type), forall (b1:b) (a1:a), ((get (const(
b1):(map a b)) a1) = b1).
Inductive array (a:Type) :=
| mk_array : Z -> (map Z a) -> array a.
Implicit Arguments mk_array.
Definition elts (a:Type)(u:(array a)): (map Z a) :=
match u with
| mk_array _ elts1 => elts1
end.
Implicit Arguments elts.
Definition length (a:Type)(u:(array a)): Z :=
match u with
| mk_array length1 _ => length1
end.
Implicit Arguments length.
Definition get1 (a:Type)(a1:(array a)) (i:Z): a := (get (elts a1) i).
Implicit Arguments get1.
Definition set1 (a:Type)(a1:(array a)) (i:Z) (v:a): (array a) :=
match a1 with
| mk_array xcl0 _ => (mk_array xcl0 (set (elts a1) i v))
end.
Implicit Arguments set1.
Definition sorted(p:(array Z)) (u:Z): Prop := forall (i:Z) (j:Z),
(((0%Z <= i)%Z /\ (i < j)%Z) /\ (j < u)%Z) -> ((get1 p i) < (get1 p
j))%Z.
Definition only_primes(p:(array Z)) (u:Z): Prop := forall (i:Z),
((0%Z <= i)%Z /\ (i < u)%Z) -> (prime (get1 p i)).
Definition no_prime_in(l:Z) (u:Z): Prop := forall (x:Z), ((l < x)%Z /\
(x < u)%Z) -> ~ (prime x).
Definition all_primes(p:(array Z)) (u:Z): Prop := forall (i:Z),
((0%Z <= i)%Z /\ (i < (u - 1%Z)%Z)%Z) -> (no_prime_in (get1 p i) (get1 p
(i + 1%Z)%Z)).
(* YOU MAY EDIT THE CONTEXT BELOW *)
(* DO NOT EDIT BELOW *)
Theorem WP_parameter_prime_numbers : forall (m:Z), (2%Z <= m)%Z ->
((0%Z <= m)%Z -> (((0%Z <= 0%Z)%Z /\ (0%Z < m)%Z) -> forall (p:(map Z Z)),
(p = (set (const(0%Z):(map Z Z)) 0%Z 2%Z)) -> (((0%Z <= 1%Z)%Z /\
(1%Z < m)%Z) -> forall (p1:(map Z Z)), (p1 = (set p 1%Z 3%Z)) ->
((2%Z <= (m - 1%Z)%Z)%Z -> forall (n:Z), forall (p2:(map Z Z)), let p3 :=
(mk_array m p2) in forall (j:Z), ((2%Z <= j)%Z /\ (j <= (m - 1%Z)%Z)%Z) ->
((((get p2 0%Z) = 2%Z) /\ ((sorted p3 j) /\ ((only_primes p3 j) /\
((all_primes p3 j) /\ ((((get p2 (j - 1%Z)%Z) < n)%Z /\
(n < (2%Z * (get p2 (j - 1%Z)%Z))%Z)%Z) /\ ((odd n) /\
(no_prime_in (get p2 (j - 1%Z)%Z) n))))))) -> ((((1%Z <= 1%Z)%Z /\
(1%Z < j)%Z) /\ ((((get p2 (j - 1%Z)%Z) < n)%Z /\ (n < (2%Z * (get p2
(j - 1%Z)%Z))%Z)%Z) /\ ((odd n) /\ (no_prime_in (get p2 (j - 1%Z)%Z)
n)))) -> forall (n1:Z), (((get p2 (j - 1%Z)%Z) < n1)%Z /\ ((prime n1) /\
(no_prime_in (get p2 (j - 1%Z)%Z) n1))) -> (((0%Z <= j)%Z /\ (j < m)%Z) ->
forall (p4:(map Z Z)), (p4 = (set p2 j n1)) -> forall (n2:Z),
(n2 = (n1 + 2%Z)%Z) -> (odd n2)))))))).
(* YOU MAY EDIT THE PROOF BELOW *)
intuition.
intros.
subst.
apply odd_odd.
apply odd_prime.
intuition.
intuition.
unfold sorted in H12. unfold get1 in H12. simpl in H12.
assert (2 < get p2 (j - 1))%Z.
rewrite <- H8.
apply H12.
omega.
omega.
Qed.
(* DO NOT EDIT BELOW *)
examples/programs/knuth_prime_numbers/knuth_prime_numbers_WP_PrimeNumbers_WP_parameter_prime_numbers_2.v deleted 100644 → 0
View file @ f14449f0
(* This file is generated by Why3's Coq driver *)
(* Beware! Only edit allowed sections below *)
Require Import ZArith.
Require Import Rbase.
Require Import ZOdiv.
Require Import Zdiv.
Definition unit := unit.
Parameter mark : Type.
Parameter at1: forall (a:Type), a -> mark -> a.
Implicit Arguments at1.
Parameter old: forall (a:Type), a -> a.
Implicit Arguments old.
Axiom Abs_pos : forall (x:Z), (0%Z <= (Zabs x))%Z.
Axiom Div_mod : forall (x:Z) (y:Z), (~ (y = 0%Z)) ->
(x = ((y * (ZOdiv x y))%Z + (ZOmod x y))%Z).
Axiom Div_bound : forall (x:Z) (y:Z), ((0%Z <= x)%Z /\ (0%Z < y)%Z) ->
((0%Z <= (ZOdiv x y))%Z /\ ((ZOdiv x y) <= x)%Z).
Axiom Mod_bound : forall (x:Z) (y:Z), (~ (y = 0%Z)) ->
(((-(Zabs y))%Z < (ZOmod x y))%Z /\ ((ZOmod x y) < (Zabs y))%Z).
Axiom Div_sign_pos : forall (x:Z) (y:Z), ((0%Z <= x)%Z /\ (0%Z < y)%Z) ->
(0%Z <= (ZOdiv x y))%Z.
Axiom Div_sign_neg : forall (x:Z) (y:Z), ((x <= 0%Z)%Z /\ (0%Z < y)%Z) ->
((ZOdiv x y) <= 0%Z)%Z.
Axiom Mod_sign_pos : forall (x:Z) (y:Z), ((0%Z <= x)%Z /\ ~ (y = 0%Z)) ->
(0%Z <= (ZOmod x y))%Z.
Axiom Mod_sign_neg : forall (x:Z) (y:Z), ((x <= 0%Z)%Z /\ ~ (y = 0%Z)) ->
((ZOmod x y) <= 0%Z)%Z.
Axiom Rounds_toward_zero : forall (x:Z) (y:Z), (~ (y = 0%Z)) ->
((Zabs ((ZOdiv x y) * y)%Z) <= (Zabs x))%Z.
Axiom Div_1 : forall (x:Z), ((ZOdiv x 1%Z) = x).
Axiom Mod_1 : forall (x:Z), ((ZOmod x 1%Z) = 0%Z).
Axiom Div_inf : forall (x:Z) (y:Z), ((0%Z <= x)%Z /\ (x < y)%Z) ->
((ZOdiv x y) = 0%Z).
Axiom Mod_inf : forall (x:Z) (y:Z), ((0%Z <= x)%Z /\ (x < y)%Z) ->
((ZOmod x y) = x).
Axiom Div_mult : forall (x:Z) (y:Z) (z:Z), ((0%Z < x)%Z /\ ((0%Z <= y)%Z /\
(0%Z <= z)%Z)) -> ((ZOdiv ((x * y)%Z + z)%Z x) = (y + (ZOdiv z x))%Z).
Axiom Mod_mult : forall (x:Z) (y:Z) (z:Z), ((0%Z < x)%Z /\ ((0%Z <= y)%Z /\
(0%Z <= z)%Z)) -> ((ZOmod ((x * y)%Z + z)%Z x) = (ZOmod z x)).
Definition lt_nat(x:Z) (y:Z): Prop := (0%Z <= y)%Z /\ (x < y)%Z.
Inductive lex : (Z* Z)%type -> (Z* Z)%type -> Prop :=
| Lex_1 : forall (x1:Z) (x2:Z) (y1:Z) (y2:Z), (lt_nat x1 x2) -> (lex (x1,
y1) (x2, y2))
| Lex_2 : forall (x:Z) (y1:Z) (y2:Z), (lt_nat y1 y2) -> (lex (x, y1) (x,
y2)).
Definition even(n:Z): Prop := exists k:Z, (n = (2%Z * k)%Z).
Definition odd(n:Z): Prop := exists k:Z, (n = ((2%Z * k)%Z + 1%Z)%Z).
Axiom even_or_odd : forall (n:Z), (even n) \/ (odd n).
Axiom even_not_odd : forall (n:Z), (even n) -> ~ (odd n).
Axiom odd_not_even : forall (n:Z), (odd n) -> ~ (even n).
Axiom even_odd : forall (n:Z), (even n) -> (odd (n + 1%Z)%Z).
Axiom odd_even : forall (n:Z), (odd n) -> (even (n + 1%Z)%Z).
Axiom even_even : forall (n:Z), (even n) -> (even (n + 2%Z)%Z).
Axiom odd_odd : forall (n:Z), (odd n) -> (odd (n + 2%Z)%Z).
Axiom even_2k : forall (k:Z), (even (2%Z * k)%Z).
Axiom odd_2k1 : forall (k:Z), (odd ((2%Z * k)%Z + 1%Z)%Z).
Definition divides(d:Z) (n:Z): Prop := exists q:Z, (n = (q * d)%Z).
Axiom divides_refl : forall (n:Z), (divides n n).
Axiom divides_1_n : forall (n:Z), (divides 1%Z n).
Axiom divides_0 : forall (n:Z), (divides n 0%Z).
Axiom divides_left : forall (a:Z) (b:Z) (c:Z), (divides a b) ->
(divides (c * a)%Z (c * b)%Z).
Axiom divides_right : forall (a:Z) (b:Z) (c:Z), (divides a b) ->
(divides (a * c)%Z (b * c)%Z).
Axiom divides_oppr : forall (a:Z) (b:Z), (divides a b) -> (divides a (-b)%Z).
Axiom divides_oppl : forall (a:Z) (b:Z), (divides a b) -> (divides (-a)%Z b).
Axiom divides_oppr_rev : forall (a:Z) (b:Z), (divides (-a)%Z b) -> (divides a
b).
Axiom divides_oppl_rev : forall (a:Z) (b:Z), (divides a (-b)%Z) -> (divides a
b).
Axiom divides_plusr : forall (a:Z) (b:Z) (c:Z), (divides a b) -> ((divides a
c) -> (divides a (b + c)%Z)).
Axiom divides_minusr : forall (a:Z) (b:Z) (c:Z), (divides a b) -> ((divides a
c) -> (divides a (b - c)%Z)).
Axiom divides_multl : forall (a:Z) (b:Z) (c:Z), (divides a b) -> (divides a
(c * b)%Z).
Axiom divides_multr : forall (a:Z) (b:Z) (c:Z), (divides a b) -> (divides a
(b * c)%Z).
Axiom divides_factorl : forall (a:Z) (b:Z), (divides a (b * a)%Z).
Axiom divides_factorr : forall (a:Z) (b:Z), (divides a (a * b)%Z).
Axiom divides_n_1 : forall (n:Z), (divides n 1%Z) -> ((n = 1%Z) \/
(n = (-1%Z)%Z)).
Axiom divides_antisym : forall (a:Z) (b:Z), (divides a b) -> ((divides b
a) -> ((a = b) \/ (a = (-b)%Z))).
Axiom divides_trans : forall (a:Z) (b:Z) (c:Z), (divides a b) -> ((divides b
c) -> (divides a c)).
Axiom divides_bounds : forall (a:Z) (b:Z), (divides a b) -> ((~ (b = 0%Z)) ->
((Zabs a) <= (Zabs b))%Z).
Axiom Div_mod1 : forall (x:Z) (y:Z), (~ (y = 0%Z)) ->
(x = ((y * (Zdiv x y))%Z + (Zmod x y))%Z).
Axiom Div_bound1 : forall (x:Z) (y:Z), ((0%Z <= x)%Z /\ (0%Z < y)%Z) ->
((0%Z <= (Zdiv x y))%Z /\ ((Zdiv x y) <= x)%Z).
Axiom Mod_bound1 : forall (x:Z) (y:Z), (~ (y = 0%Z)) ->
((0%Z <= (Zmod x y))%Z /\ ((Zmod x y) < (Zabs y))%Z).
Axiom Mod_11 : forall (x:Z), ((Zmod x 1%Z) = 0%Z).
Axiom Div_11 : forall (x:Z), ((Zdiv x 1%Z) = x).
Axiom mod_divides_euclidean : forall (a:Z) (b:Z), (~ (b = 0%Z)) ->
(((Zmod a b) = 0%Z) -> (divides b a)).
Axiom divides_mod_euclidean : forall (a:Z) (b:Z), (~ (b = 0%Z)) ->
((divides b a) -> ((Zmod a b) = 0%Z)).
Axiom mod_divides_computer : forall (a:Z) (b:Z), (~ (b = 0%Z)) ->
(((ZOmod a b) = 0%Z) -> (divides b a)).
Axiom divides_mod_computer : forall (a:Z) (b:Z), (~ (b = 0%Z)) -> ((divides b
a) -> ((ZOmod a b) = 0%Z)).
Axiom even_divides : forall (a:Z), (even a) <-> (divides 2%Z a).
Axiom odd_divides : forall (a:Z), (odd a) <-> ~ (divides 2%Z a).
Definition prime(p:Z): Prop := (2%Z <= p)%Z /\ forall (n:Z), ((1%Z < n)%Z /\
(n < p)%Z) -> ~ (divides n p).
Axiom not_prime_1 : ~ (prime 1%Z).
Axiom prime_2 : (prime 2%Z).
Axiom prime_3 : (prime 3%Z).
Axiom prime_divisors : forall (p:Z), (prime p) -> forall (d:Z), (divides d
p) -> ((d = 1%Z) \/ ((d = (-1%Z)%Z) \/ ((d = p) \/ (d = (-p)%Z)))).
Axiom small_divisors : forall (p:Z), (2%Z <= p)%Z -> ((forall (d:Z),
(2%Z <= d)%Z -> ((prime d) -> (((1%Z < (d * d)%Z)%Z /\
((d * d)%Z <= p)%Z) -> ~ (divides d p)))) -> (prime p)).
Axiom even_prime : forall (p:Z), (prime p) -> ((even p) -> (p = 2%Z)).
Axiom odd_prime : forall (p:Z), (prime p) -> ((3%Z <= p)%Z -> (odd p)).
Inductive ref (a:Type) :=
| mk_ref : a -> ref a.
Implicit Arguments mk_ref.
Definition contents (a:Type)(u:(ref a)): a :=
match u with
| mk_ref contents1 => contents1
end.
Implicit Arguments contents.
Parameter map : forall (a:Type) (b:Type), Type.
Parameter get: forall (a:Type) (b:Type), (map a b) -> a -> b.
Implicit Arguments get.
Parameter set: forall (a:Type) (b:Type), (map a b) -> a -> b -> (map a b).