Theory CSP_F

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theory CSP_F
imports CSP_F_tactic CSP_F_surj CSP_T
begin

           (*-------------------------------------------*
            |        CSP-Prover on Isabelle2004         |
            |               December 2004               |
            |               February 2005  (modified)   |
            |                   June 2005  (modified)   |
            |                                           |
            |        CSP-Prover on Isabelle2005         |
            |               November 2005  (modified)   |
            |                  March 2007  (modified)   |
            |                                           |
            |        Yoshinao Isobe (AIST JAPAN)        |
            *-------------------------------------------*)

theory CSP_F
imports CSP_F_tactic CSP_F_surj CSP_T
begin

(*-------------------------------------------------------*
 |                                                       |
 |  The folloing def have already added in CSP_T         |
 |                                                       |
 |   Procfun_def                                         |
 |   ProcX_def                                           |
 |   gSKIPX_def                                          |
 |   gProcX_def                                          |
 |   nohideX_def                                         |
 |                                                       |
 *-------------------------------------------------------*)

(*----------------------------------------------------------------------*
 |                                                                      |
 |  To unfold (resp. fold) syntactic-sugar for Ext_ and Int_pre_choices |
 |  choices, use "unfold csp_prefix_ss_def"                             |
 |                                                                      |
 *----------------------------------------------------------------------*)

(*------------------------------------*
 |                                    |
 |    laws automatically applied      |
 |                                    |
 *------------------------------------*)

(* intro! intro? are automatically applied by "rule".     *)
(* intro! is automatically applied by "rules" and "auto". *)

(* CSP_F_law_basic *)

declare cspF_commut                                  [simp]

(* CSP_F_law_ref *)

declare cspF_Int_choice_right                        [intro!]
declare cspF_Rep_int_choice_right                    [intro!]

(* CSP_F_law_SKIP *)

declare cspF_SKIP_DIV_resolve                        [simp]
lemmas  cspF_SKIP_DIV_resolve_sym                    [simp]
      = cspF_SKIP_DIV_resolve[THEN cspF_sym]

(* CSP_F_law_decompo *)

declare cspF_rm_head                                 [intro!]
declare cspF_decompo                                 [simp]

(* CSP_F_law_dist *)

declare cspF_all_dist                                [simp]
lemmas  cspF_all_dist_sym                            [simp]
      = cspF_all_dist[THEN cspF_sym]

declare cspF_unwind                                  [simp]
lemmas  cspF_unwind_sym                              [simp]
      = cspF_unwind[THEN cspF_sym]

(* CSP_F_law_step *)

declare cspF_step                                    [simp]
lemmas  cspF_step_sym                                [simp]
      = cspF_step[THEN cspF_sym]

(* CSP_F_law_etc *)

declare cspF_choice_IF                               [simp]

end

lemmas cspF_SKIP_DIV_resolve_sym:

  ? x:(Y1 - X1) -> (SKIP |[X1]| Qf1 x) =F[M1.0,M1.0] SKIP |[X1]| ? :Y1 -> Qf1
  ? x:(Y1 - X1) -> (Pf1 x |[X1]| SKIP) =F[M1.0,M1.0] ? :Y1 -> Pf1 |[X1]| SKIP
  ? x:(Y1 - X1) -> (DIV |[X1]| Qf1 x) [+] DIV =F[M1.0,M1.0] 
  DIV |[X1]| ? :Y1 -> Qf1
  ? x:(Y1 - X1) -> (Qf1 x |[X1]| DIV) [+] DIV =F[M1.0,M1.0] 
  ? :Y1 -> Qf1 |[X1]| DIV
  SKIP =F[M2.0,M1.0] SKIP [+] DIV
  SKIP =F[M2.0,M1.0] DIV [+] SKIP
  DIV =F[M2.0,M1.0] SKIP |[X1]| DIV
  DIV =F[M2.0,M1.0] DIV |[X1]| SKIP
  SKIP =F[M2.0,M1.0] SKIP |[X1]| SKIP
  DIV =F[M2.0,M1.0] DIV |[X1]| DIV
  ? x:(Y1 - X1) -> (Pf1 x |[X1]| SKIP) [+] SKIP =F[M1.0,M1.0] 
  (? :Y1 -> Pf1 [+] SKIP) |[X1]| SKIP
  ? x:(Y1 - X1) -> (SKIP |[X1]| Pf1 x) [+] SKIP =F[M1.0,M1.0] 
  SKIP |[X1]| (? :Y1 -> Pf1 [+] SKIP)
  ? x:(Y1 - X1) -> (Pf1 x |[X1]| SKIP) [+] DIV =F[M1.0,M1.0] 
  (? :Y1 -> Pf1 [+] DIV) |[X1]| SKIP
  ? x:(Y1 - X1) -> (SKIP |[X1]| Pf1 x) [+] DIV =F[M1.0,M1.0] 
  SKIP |[X1]| (? :Y1 -> Pf1 [+] DIV)
  P1 |[X1]| DIV =F[M1.0,M1.0] (P1 [+] SKIP) |[X1]| DIV
  DIV |[X1]| P1 =F[M1.0,M1.0] DIV |[X1]| (P1 [+] SKIP)
  P1 |[X1]| DIV =F[M1.0,M1.0] (P1 [+] DIV) |[X1]| DIV
  DIV |[X1]| P1 =F[M1.0,M1.0] DIV |[X1]| (P1 [+] DIV)
  SKIP =F[M1.0,M1.0] SKIP -- X1
  DIV =F[M2.0,M1.0] DIV -- X1
  ? x:(Y1 - X1) -> Pf1 x -- X1 [+] DIV |~| ! x:(Y1X1) .. Pf1 x -- X1 
  =F[M1.0,M1.0] (? :Y1 -> Pf1 [+] DIV) -- X1
  ? x:(Y1 - X1) -> Pf1 x -- X1 [+] SKIP |~| ! x:(Y1X1) .. Pf1 x -- X1 
  =F[M1.0,M1.0] (? :Y1 -> Pf1 [+] SKIP) -- X1
  SKIP =F[M2.0,M1.0] SKIP [[r1]]
  DIV =F[M2.0,M1.0] DIV [[r1]]
  P2.0 =F[M1.0,M1.0] SKIP ;; P2.0
  P2.0 =F[M1.0,M1.0] P2.0 ;; SKIP
  DIV =F[M2.0,M1.0] DIV ;; P1
  ? x:X1 -> (Pf1 x ;; Q1) [> Q1 =F[M1.0,M1.0] (? :X1 -> Pf1 [> SKIP) ;; Q1
  ? x:X1 -> (Pf1 x ;; Q1) [> DIV =F[M1.0,M1.0] (? :X1 -> Pf1 [> DIV) ;; Q1
  SKIP =F[M2.0,M1.0] SKIP |. Suc n1
  DIV =F[M2.0,M1.0] DIV |. n1
  ? x:(X1Y1Z1 ∪ (Y1 - X1) ∪ (Z1 - X1)) 
   -> IF (xX1) THEN Pf1 x |[X1]| Qf1 x 
      ELSE IF (xY1xZ1) 
           THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] SKIP) 
                 |~| (? :Y1 -> Pf1 [+] SKIP) |[X1]| Qf1 x 
           ELSE IF (xY1) THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] SKIP) 
                ELSE (? :Y1 -> Pf1 [+] SKIP) |[X1]| Qf1 x 
   [> (SKIP |[X1]| (? :Z1 -> Qf1 [+] SKIP) 
        |~| (? :Y1 -> Pf1 [+] SKIP) |[X1]| SKIP) 
  =F[M1.0,M1.0] (? :Y1 -> Pf1 [+] SKIP) |[X1]| (? :Z1 -> Qf1 [+] SKIP)
  ? x:(X1Y1Z1 ∪ (Y1 - X1) ∪ (Z1 - X1)) 
   -> IF (xX1) THEN Pf1 x |[X1]| Qf1 x 
      ELSE IF (xY1xZ1) 
           THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] DIV) 
                 |~| (? :Y1 -> Pf1 [+] DIV) |[X1]| Qf1 x 
           ELSE IF (xY1) THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] DIV) 
                ELSE (? :Y1 -> Pf1 [+] DIV) |[X1]| Qf1 x 
   [> (DIV |[X1]| (? :Z1 -> Qf1 [+] DIV) |~| (? :Y1 -> Pf1 [+] DIV) |[X1]| DIV) 
  =F[M1.0,M1.0] (? :Y1 -> Pf1 [+] DIV) |[X1]| (? :Z1 -> Qf1 [+] DIV)
  ? x:(X1Y1Z1 ∪ (Y1 - X1) ∪ (Z1 - X1)) 
   -> IF (xX1) THEN Pf1 x |[X1]| Qf1 x 
      ELSE IF (xY1xZ1) 
           THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] DIV) 
                 |~| (? :Y1 -> Pf1 [+] SKIP) |[X1]| Qf1 x 
           ELSE IF (xY1) THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] DIV) 
                ELSE (? :Y1 -> Pf1 [+] SKIP) |[X1]| Qf1 x 
   [> (SKIP |[X1]| (? :Z1 -> Qf1 [+] DIV) |~| (? :Y1 -> Pf1 [+] SKIP) |[X1]| DIV) 
  =F[M1.0,M1.0] (? :Y1 -> Pf1 [+] SKIP) |[X1]| (? :Z1 -> Qf1 [+] DIV)
  ? x:(X1Y1Z1 ∪ (Y1 - X1) ∪ (Z1 - X1)) 
   -> IF (xX1) THEN Pf1 x |[X1]| Qf1 x 
      ELSE IF (xY1xZ1) 
           THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] SKIP) 
                 |~| (? :Y1 -> Pf1 [+] DIV) |[X1]| Qf1 x 
           ELSE IF (xY1) THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] SKIP) 
                ELSE (? :Y1 -> Pf1 [+] DIV) |[X1]| Qf1 x 
   [> (DIV |[X1]| (? :Z1 -> Qf1 [+] SKIP) |~| (? :Y1 -> Pf1 [+] DIV) |[X1]| SKIP) 
  =F[M1.0,M1.0] (? :Y1 -> Pf1 [+] DIV) |[X1]| (? :Z1 -> Qf1 [+] SKIP)
  ? x:(X1Y1Z1 ∪ (Y1 - X1) ∪ (Z1 - X1)) 
   -> IF (xX1) THEN Pf1 x |[X1]| Qf1 x 
      ELSE IF (xY1xZ1) 
           THEN Pf1 x |[X1]| ? :Z1 -> Qf1 
                 |~| (? :Y1 -> Pf1 [+] SKIP) |[X1]| Qf1 x 
           ELSE IF (xY1) THEN Pf1 x |[X1]| ? :Z1 -> Qf1 
                ELSE (? :Y1 -> Pf1 [+] SKIP) |[X1]| Qf1 x 
   [> SKIP |[X1]| ? :Z1 -> Qf1 
  =F[M1.0,M1.0] (? :Y1 -> Pf1 [+] SKIP) |[X1]| ? :Z1 -> Qf1
  ? x:(X1Y1Z1 ∪ (Y1 - X1) ∪ (Z1 - X1)) 
   -> IF (xX1) THEN Pf1 x |[X1]| Qf1 x 
      ELSE IF (xY1xZ1) 
           THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] SKIP) 
                 |~| ? :Y1 -> Pf1 |[X1]| Qf1 x 
           ELSE IF (xY1) THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] SKIP) 
                ELSE ? :Y1 -> Pf1 |[X1]| Qf1 x 
   [> ? :Y1 -> Pf1 |[X1]| SKIP 
  =F[M1.0,M1.0] ? :Y1 -> Pf1 |[X1]| (? :Z1 -> Qf1 [+] SKIP)
  ? x:(X1Y1Z1 ∪ (Y1 - X1) ∪ (Z1 - X1)) 
   -> IF (xX1) THEN Pf1 x |[X1]| Qf1 x 
      ELSE IF (xY1xZ1) 
           THEN Pf1 x |[X1]| ? :Z1 -> Qf1 |~| (? :Y1 -> Pf1 [+] DIV) |[X1]| Qf1 x 
           ELSE IF (xY1) THEN Pf1 x |[X1]| ? :Z1 -> Qf1 
                ELSE (? :Y1 -> Pf1 [+] DIV) |[X1]| Qf1 x 
   [> DIV |[X1]| ? :Z1 -> Qf1 
  =F[M1.0,M1.0] (? :Y1 -> Pf1 [+] DIV) |[X1]| ? :Z1 -> Qf1
  ? x:(X1Y1Z1 ∪ (Y1 - X1) ∪ (Z1 - X1)) 
   -> IF (xX1) THEN Pf1 x |[X1]| Qf1 x 
      ELSE IF (xY1xZ1) 
           THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] DIV) |~| ? :Y1 -> Pf1 |[X1]| Qf1 x 
           ELSE IF (xY1) THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] DIV) 
                ELSE ? :Y1 -> Pf1 |[X1]| Qf1 x 
   [> ? :Y1 -> Pf1 |[X1]| DIV 
  =F[M1.0,M1.0] ? :Y1 -> Pf1 |[X1]| (? :Z1 -> Qf1 [+] DIV)
  ? x:X1 -> (Pf1 x ;; Q1) [> Q1 =F[M1.0,M1.0] (? :X1 -> Pf1 [+] SKIP) ;; Q1
  ? x:X1 -> (Pf1 x ;; Q1) [+] DIV =F[M1.0,M1.0] (? :X1 -> Pf1 [+] DIV) ;; Q1

lemmas cspF_SKIP_DIV_resolve_sym:

  ? x:(Y1 - X1) -> (SKIP |[X1]| Qf1 x) =F[M1.0,M1.0] SKIP |[X1]| ? :Y1 -> Qf1
  ? x:(Y1 - X1) -> (Pf1 x |[X1]| SKIP) =F[M1.0,M1.0] ? :Y1 -> Pf1 |[X1]| SKIP
  ? x:(Y1 - X1) -> (DIV |[X1]| Qf1 x) [+] DIV =F[M1.0,M1.0] 
  DIV |[X1]| ? :Y1 -> Qf1
  ? x:(Y1 - X1) -> (Qf1 x |[X1]| DIV) [+] DIV =F[M1.0,M1.0] 
  ? :Y1 -> Qf1 |[X1]| DIV
  SKIP =F[M2.0,M1.0] SKIP [+] DIV
  SKIP =F[M2.0,M1.0] DIV [+] SKIP
  DIV =F[M2.0,M1.0] SKIP |[X1]| DIV
  DIV =F[M2.0,M1.0] DIV |[X1]| SKIP
  SKIP =F[M2.0,M1.0] SKIP |[X1]| SKIP
  DIV =F[M2.0,M1.0] DIV |[X1]| DIV
  ? x:(Y1 - X1) -> (Pf1 x |[X1]| SKIP) [+] SKIP =F[M1.0,M1.0] 
  (? :Y1 -> Pf1 [+] SKIP) |[X1]| SKIP
  ? x:(Y1 - X1) -> (SKIP |[X1]| Pf1 x) [+] SKIP =F[M1.0,M1.0] 
  SKIP |[X1]| (? :Y1 -> Pf1 [+] SKIP)
  ? x:(Y1 - X1) -> (Pf1 x |[X1]| SKIP) [+] DIV =F[M1.0,M1.0] 
  (? :Y1 -> Pf1 [+] DIV) |[X1]| SKIP
  ? x:(Y1 - X1) -> (SKIP |[X1]| Pf1 x) [+] DIV =F[M1.0,M1.0] 
  SKIP |[X1]| (? :Y1 -> Pf1 [+] DIV)
  P1 |[X1]| DIV =F[M1.0,M1.0] (P1 [+] SKIP) |[X1]| DIV
  DIV |[X1]| P1 =F[M1.0,M1.0] DIV |[X1]| (P1 [+] SKIP)
  P1 |[X1]| DIV =F[M1.0,M1.0] (P1 [+] DIV) |[X1]| DIV
  DIV |[X1]| P1 =F[M1.0,M1.0] DIV |[X1]| (P1 [+] DIV)
  SKIP =F[M1.0,M1.0] SKIP -- X1
  DIV =F[M2.0,M1.0] DIV -- X1
  ? x:(Y1 - X1) -> Pf1 x -- X1 [+] DIV |~| ! x:(Y1X1) .. Pf1 x -- X1 
  =F[M1.0,M1.0] (? :Y1 -> Pf1 [+] DIV) -- X1
  ? x:(Y1 - X1) -> Pf1 x -- X1 [+] SKIP |~| ! x:(Y1X1) .. Pf1 x -- X1 
  =F[M1.0,M1.0] (? :Y1 -> Pf1 [+] SKIP) -- X1
  SKIP =F[M2.0,M1.0] SKIP [[r1]]
  DIV =F[M2.0,M1.0] DIV [[r1]]
  P2.0 =F[M1.0,M1.0] SKIP ;; P2.0
  P2.0 =F[M1.0,M1.0] P2.0 ;; SKIP
  DIV =F[M2.0,M1.0] DIV ;; P1
  ? x:X1 -> (Pf1 x ;; Q1) [> Q1 =F[M1.0,M1.0] (? :X1 -> Pf1 [> SKIP) ;; Q1
  ? x:X1 -> (Pf1 x ;; Q1) [> DIV =F[M1.0,M1.0] (? :X1 -> Pf1 [> DIV) ;; Q1
  SKIP =F[M2.0,M1.0] SKIP |. Suc n1
  DIV =F[M2.0,M1.0] DIV |. n1
  ? x:(X1Y1Z1 ∪ (Y1 - X1) ∪ (Z1 - X1)) 
   -> IF (xX1) THEN Pf1 x |[X1]| Qf1 x 
      ELSE IF (xY1xZ1) 
           THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] SKIP) 
                 |~| (? :Y1 -> Pf1 [+] SKIP) |[X1]| Qf1 x 
           ELSE IF (xY1) THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] SKIP) 
                ELSE (? :Y1 -> Pf1 [+] SKIP) |[X1]| Qf1 x 
   [> (SKIP |[X1]| (? :Z1 -> Qf1 [+] SKIP) 
        |~| (? :Y1 -> Pf1 [+] SKIP) |[X1]| SKIP) 
  =F[M1.0,M1.0] (? :Y1 -> Pf1 [+] SKIP) |[X1]| (? :Z1 -> Qf1 [+] SKIP)
  ? x:(X1Y1Z1 ∪ (Y1 - X1) ∪ (Z1 - X1)) 
   -> IF (xX1) THEN Pf1 x |[X1]| Qf1 x 
      ELSE IF (xY1xZ1) 
           THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] DIV) 
                 |~| (? :Y1 -> Pf1 [+] DIV) |[X1]| Qf1 x 
           ELSE IF (xY1) THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] DIV) 
                ELSE (? :Y1 -> Pf1 [+] DIV) |[X1]| Qf1 x 
   [> (DIV |[X1]| (? :Z1 -> Qf1 [+] DIV) |~| (? :Y1 -> Pf1 [+] DIV) |[X1]| DIV) 
  =F[M1.0,M1.0] (? :Y1 -> Pf1 [+] DIV) |[X1]| (? :Z1 -> Qf1 [+] DIV)
  ? x:(X1Y1Z1 ∪ (Y1 - X1) ∪ (Z1 - X1)) 
   -> IF (xX1) THEN Pf1 x |[X1]| Qf1 x 
      ELSE IF (xY1xZ1) 
           THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] DIV) 
                 |~| (? :Y1 -> Pf1 [+] SKIP) |[X1]| Qf1 x 
           ELSE IF (xY1) THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] DIV) 
                ELSE (? :Y1 -> Pf1 [+] SKIP) |[X1]| Qf1 x 
   [> (SKIP |[X1]| (? :Z1 -> Qf1 [+] DIV) |~| (? :Y1 -> Pf1 [+] SKIP) |[X1]| DIV) 
  =F[M1.0,M1.0] (? :Y1 -> Pf1 [+] SKIP) |[X1]| (? :Z1 -> Qf1 [+] DIV)
  ? x:(X1Y1Z1 ∪ (Y1 - X1) ∪ (Z1 - X1)) 
   -> IF (xX1) THEN Pf1 x |[X1]| Qf1 x 
      ELSE IF (xY1xZ1) 
           THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] SKIP) 
                 |~| (? :Y1 -> Pf1 [+] DIV) |[X1]| Qf1 x 
           ELSE IF (xY1) THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] SKIP) 
                ELSE (? :Y1 -> Pf1 [+] DIV) |[X1]| Qf1 x 
   [> (DIV |[X1]| (? :Z1 -> Qf1 [+] SKIP) |~| (? :Y1 -> Pf1 [+] DIV) |[X1]| SKIP) 
  =F[M1.0,M1.0] (? :Y1 -> Pf1 [+] DIV) |[X1]| (? :Z1 -> Qf1 [+] SKIP)
  ? x:(X1Y1Z1 ∪ (Y1 - X1) ∪ (Z1 - X1)) 
   -> IF (xX1) THEN Pf1 x |[X1]| Qf1 x 
      ELSE IF (xY1xZ1) 
           THEN Pf1 x |[X1]| ? :Z1 -> Qf1 
                 |~| (? :Y1 -> Pf1 [+] SKIP) |[X1]| Qf1 x 
           ELSE IF (xY1) THEN Pf1 x |[X1]| ? :Z1 -> Qf1 
                ELSE (? :Y1 -> Pf1 [+] SKIP) |[X1]| Qf1 x 
   [> SKIP |[X1]| ? :Z1 -> Qf1 
  =F[M1.0,M1.0] (? :Y1 -> Pf1 [+] SKIP) |[X1]| ? :Z1 -> Qf1
  ? x:(X1Y1Z1 ∪ (Y1 - X1) ∪ (Z1 - X1)) 
   -> IF (xX1) THEN Pf1 x |[X1]| Qf1 x 
      ELSE IF (xY1xZ1) 
           THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] SKIP) 
                 |~| ? :Y1 -> Pf1 |[X1]| Qf1 x 
           ELSE IF (xY1) THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] SKIP) 
                ELSE ? :Y1 -> Pf1 |[X1]| Qf1 x 
   [> ? :Y1 -> Pf1 |[X1]| SKIP 
  =F[M1.0,M1.0] ? :Y1 -> Pf1 |[X1]| (? :Z1 -> Qf1 [+] SKIP)
  ? x:(X1Y1Z1 ∪ (Y1 - X1) ∪ (Z1 - X1)) 
   -> IF (xX1) THEN Pf1 x |[X1]| Qf1 x 
      ELSE IF (xY1xZ1) 
           THEN Pf1 x |[X1]| ? :Z1 -> Qf1 |~| (? :Y1 -> Pf1 [+] DIV) |[X1]| Qf1 x 
           ELSE IF (xY1) THEN Pf1 x |[X1]| ? :Z1 -> Qf1 
                ELSE (? :Y1 -> Pf1 [+] DIV) |[X1]| Qf1 x 
   [> DIV |[X1]| ? :Z1 -> Qf1 
  =F[M1.0,M1.0] (? :Y1 -> Pf1 [+] DIV) |[X1]| ? :Z1 -> Qf1
  ? x:(X1Y1Z1 ∪ (Y1 - X1) ∪ (Z1 - X1)) 
   -> IF (xX1) THEN Pf1 x |[X1]| Qf1 x 
      ELSE IF (xY1xZ1) 
           THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] DIV) |~| ? :Y1 -> Pf1 |[X1]| Qf1 x 
           ELSE IF (xY1) THEN Pf1 x |[X1]| (? :Z1 -> Qf1 [+] DIV) 
                ELSE ? :Y1 -> Pf1 |[X1]| Qf1 x 
   [> ? :Y1 -> Pf1 |[X1]| DIV 
  =F[M1.0,M1.0] ? :Y1 -> Pf1 |[X1]| (? :Z1 -> Qf1 [+] DIV)
  ? x:X1 -> (Pf1 x ;; Q1) [> Q1 =F[M1.0,M1.0] (? :X1 -> Pf1 [+] SKIP) ;; Q1
  ? x:X1 -> (Pf1 x ;; Q1) [+] DIV =F[M1.0,M1.0] (? :X1 -> Pf1 [+] DIV) ;; Q1

lemmas cspF_all_dist_sym:

  P1.1 [+] Q1 |~| P2.1 [+] Q1 =F[M1.0,M1.0] (P1.1 |~| P2.1) [+] Q1
  P1 [+] Q1.1 |~| P1 [+] Q2.1 =F[M1.0,M1.0] P1 [+] (Q1.1 |~| Q2.1)
  P1.1 |[X1]| Q1 |~| P2.1 |[X1]| Q1 =F[M1.0,M1.0] (P1.1 |~| P2.1) |[X1]| Q1
  P1 |[X1]| Q1.1 |~| P1 |[X1]| Q2.1 =F[M1.0,M1.0] P1 |[X1]| (Q1.1 |~| Q2.1)
  P1.1 -- X1 |~| P2.1 -- X1 =F[M1.0,M1.0] (P1.1 |~| P2.1) -- X1
  P1.1 [[r1]] |~| P2.1 [[r1]] =F[M1.0,M1.0] (P1.1 |~| P2.1) [[r1]]
  P1.1 ;; Q1 |~| P2.1 ;; Q1 =F[M1.0,M1.0] (P1.1 |~| P2.1) ;; Q1
  P1.1 |. n1 |~| P2.1 |. n1 =F[M1.0,M1.0] (P1.1 |~| P2.1) |. n1
  !nat :N1 .. Pf1 |~| !nat :N1 .. Qf1 =F[M1.0,M1.0] !nat n:N1 .. (Pf1 n |~| Qf1 n)
  !set :Xs1 .. Pf1 |~| !set :Xs1 .. Qf1 =F[M1.0,M1.0] 
  !set X:Xs1 .. (Pf1 X |~| Qf1 X)
  ! :X1 .. Pf1 |~| ! :X1 .. Qf1 =F[M1.0,M1.0] ! a:X1 .. (Pf1 a |~| Qf1 a)
  inj f1
  ==> !<f1> :X1 .. Pf1 |~| !<f1> :X1 .. Qf1 =F[M1.0,M1.0] 
      !<f1> a:X1 .. (Pf1 a |~| Qf1 a)
  IF (N1 = {}) THEN DIV [+] Q1 ELSE !nat n:N1 .. Pf1 n [+] Q1 =F[M1.0,M1.0] 
  (!nat :N1 .. Pf1) [+] Q1
  IF (N1 = {}) THEN P1 [+] DIV ELSE !nat n:N1 .. P1 [+] Qf1 n =F[M1.0,M1.0] 
  P1 [+] (!nat :N1 .. Qf1)
  IF (N1 = {}) THEN DIV |[X1]| Q1 ELSE !nat n:N1 .. Pf1 n |[X1]| Q1 =F[M1.0,M1.0] 
  (!nat :N1 .. Pf1) |[X1]| Q1
  IF (N1 = {}) THEN P1 |[X1]| DIV ELSE !nat n:N1 .. P1 |[X1]| Qf1 n =F[M1.0,M1.0] 
  P1 |[X1]| (!nat :N1 .. Qf1)
  !nat n:N1 .. Pf1 n -- X1 =F[M1.0,M1.0] (!nat :N1 .. Pf1) -- X1
  !nat n:N1 .. Pf1 n [[r1]] =F[M1.0,M1.0] (!nat :N1 .. Pf1) [[r1]]
  !nat n:N1 .. Pf1 n ;; Q1 =F[M1.0,M1.0] (!nat :N1 .. Pf1) ;; Q1
  !nat n:N1 .. Pf1 n |. m1 =F[M1.0,M1.0] (!nat :N1 .. Pf1) |. m1
  IF (Xs1 = {}) THEN DIV [+] Q1 ELSE !set X:Xs1 .. Pf1 X [+] Q1 =F[M1.0,M1.0] 
  (!set :Xs1 .. Pf1) [+] Q1
  IF (Xs1 = {}) THEN P1 [+] DIV ELSE !set X:Xs1 .. P1 [+] Qf1 X =F[M1.0,M1.0] 
  P1 [+] (!set :Xs1 .. Qf1)
  IF (Xs1 = {}) THEN DIV |[Y1]| Q1 ELSE !set X:Xs1 .. Pf1 X |[Y1]| Q1 
  =F[M1.0,M1.0] (!set :Xs1 .. Pf1) |[Y1]| Q1
  IF (Xs1 = {}) THEN P1 |[Y1]| DIV ELSE !set X:Xs1 .. P1 |[Y1]| Qf1 X 
  =F[M1.0,M1.0] P1 |[Y1]| (!set :Xs1 .. Qf1)
  !set X:Xs1 .. Pf1 X -- Y1 =F[M1.0,M1.0] (!set :Xs1 .. Pf1) -- Y1
  !set X:Xs1 .. Pf1 X [[r1]] =F[M1.0,M1.0] (!set :Xs1 .. Pf1) [[r1]]
  !set X:Xs1 .. Pf1 X ;; Q1 =F[M1.0,M1.0] (!set :Xs1 .. Pf1) ;; Q1
  !set X:Xs1 .. Pf1 X |. m1 =F[M1.0,M1.0] (!set :Xs1 .. Pf1) |. m1
  IF (X1 = {}) THEN DIV [+] Q1 ELSE ! x:X1 .. Pf1 x [+] Q1 =F[M1.0,M1.0] 
  (! :X1 .. Pf1) [+] Q1
  IF (X1 = {}) THEN P1 [+] DIV ELSE ! x:X1 .. P1 [+] Qf1 x =F[M1.0,M1.0] 
  P1 [+] (! :X1 .. Qf1)
  IF (Y1 = {}) THEN DIV |[X1]| Q1 ELSE ! x:Y1 .. Pf1 x |[X1]| Q1 =F[M1.0,M1.0] 
  (! :Y1 .. Pf1) |[X1]| Q1
  IF (Y1 = {}) THEN P1 |[X1]| DIV ELSE ! x:Y1 .. P1 |[X1]| Qf1 x =F[M1.0,M1.0] 
  P1 |[X1]| (! :Y1 .. Qf1)
  ! x:Y1 .. Pf1 x -- X1 =F[M1.0,M1.0] (! :Y1 .. Pf1) -- X1
  ! x:X1 .. Pf1 x [[r1]] =F[M1.0,M1.0] (! :X1 .. Pf1) [[r1]]
  ! x:X1 .. Pf1 x ;; Q1 =F[M1.0,M1.0] (! :X1 .. Pf1) ;; Q1
  ! x:X1 .. Pf1 x |. n1 =F[M1.0,M1.0] (! :X1 .. Pf1) |. n1
  IF (X1 = {}) THEN DIV [+] Q1 ELSE !<f1> x:X1 .. Pf1 x [+] Q1 =F[M1.0,M1.0] 
  (!<f1> :X1 .. Pf1) [+] Q1
  IF (X1 = {}) THEN P1 [+] DIV ELSE !<f1> x:X1 .. P1 [+] Qf1 x =F[M1.0,M1.0] 
  P1 [+] (!<f1> :X1 .. Qf1)
  IF (Y1 = {}) THEN DIV |[X1]| Q1 ELSE !<f1> x:Y1 .. Pf1 x |[X1]| Q1 
  =F[M1.0,M1.0] (!<f1> :Y1 .. Pf1) |[X1]| Q1
  IF (Y1 = {}) THEN P1 |[X1]| DIV ELSE !<f1> x:Y1 .. P1 |[X1]| Qf1 x 
  =F[M1.0,M1.0] P1 |[X1]| (!<f1> :Y1 .. Qf1)
  !<f1> x:Y1 .. Pf1 x -- X1 =F[M1.0,M1.0] (!<f1> :Y1 .. Pf1) -- X1
  !<f1> x:X1 .. Pf1 x [[r1]] =F[M1.0,M1.0] (!<f1> :X1 .. Pf1) [[r1]]
  !<f1> x:X1 .. Pf1 x ;; Q1 =F[M1.0,M1.0] (!<f1> :X1 .. Pf1) ;; Q1
  !<f1> x:X1 .. Pf1 x |. n1 =F[M1.0,M1.0] (!<f1> :X1 .. Pf1) |. n1
  P1.1 [[r1]] [+] P2.1 [[r1]] =F[M1.0,M1.0] (P1.1 [+] P2.1) [[r1]]
  P1.1 |. n1 [+] P2.1 |. n1 =F[M1.0,M1.0] (P1.1 [+] P2.1) |. n1

lemmas cspF_all_dist_sym:

  P1.1 [+] Q1 |~| P2.1 [+] Q1 =F[M1.0,M1.0] (P1.1 |~| P2.1) [+] Q1
  P1 [+] Q1.1 |~| P1 [+] Q2.1 =F[M1.0,M1.0] P1 [+] (Q1.1 |~| Q2.1)
  P1.1 |[X1]| Q1 |~| P2.1 |[X1]| Q1 =F[M1.0,M1.0] (P1.1 |~| P2.1) |[X1]| Q1
  P1 |[X1]| Q1.1 |~| P1 |[X1]| Q2.1 =F[M1.0,M1.0] P1 |[X1]| (Q1.1 |~| Q2.1)
  P1.1 -- X1 |~| P2.1 -- X1 =F[M1.0,M1.0] (P1.1 |~| P2.1) -- X1
  P1.1 [[r1]] |~| P2.1 [[r1]] =F[M1.0,M1.0] (P1.1 |~| P2.1) [[r1]]
  P1.1 ;; Q1 |~| P2.1 ;; Q1 =F[M1.0,M1.0] (P1.1 |~| P2.1) ;; Q1
  P1.1 |. n1 |~| P2.1 |. n1 =F[M1.0,M1.0] (P1.1 |~| P2.1) |. n1
  !nat :N1 .. Pf1 |~| !nat :N1 .. Qf1 =F[M1.0,M1.0] !nat n:N1 .. (Pf1 n |~| Qf1 n)
  !set :Xs1 .. Pf1 |~| !set :Xs1 .. Qf1 =F[M1.0,M1.0] 
  !set X:Xs1 .. (Pf1 X |~| Qf1 X)
  ! :X1 .. Pf1 |~| ! :X1 .. Qf1 =F[M1.0,M1.0] ! a:X1 .. (Pf1 a |~| Qf1 a)
  inj f1
  ==> !<f1> :X1 .. Pf1 |~| !<f1> :X1 .. Qf1 =F[M1.0,M1.0] 
      !<f1> a:X1 .. (Pf1 a |~| Qf1 a)
  IF (N1 = {}) THEN DIV [+] Q1 ELSE !nat n:N1 .. Pf1 n [+] Q1 =F[M1.0,M1.0] 
  (!nat :N1 .. Pf1) [+] Q1
  IF (N1 = {}) THEN P1 [+] DIV ELSE !nat n:N1 .. P1 [+] Qf1 n =F[M1.0,M1.0] 
  P1 [+] (!nat :N1 .. Qf1)
  IF (N1 = {}) THEN DIV |[X1]| Q1 ELSE !nat n:N1 .. Pf1 n |[X1]| Q1 =F[M1.0,M1.0] 
  (!nat :N1 .. Pf1) |[X1]| Q1
  IF (N1 = {}) THEN P1 |[X1]| DIV ELSE !nat n:N1 .. P1 |[X1]| Qf1 n =F[M1.0,M1.0] 
  P1 |[X1]| (!nat :N1 .. Qf1)
  !nat n:N1 .. Pf1 n -- X1 =F[M1.0,M1.0] (!nat :N1 .. Pf1) -- X1
  !nat n:N1 .. Pf1 n [[r1]] =F[M1.0,M1.0] (!nat :N1 .. Pf1) [[r1]]
  !nat n:N1 .. Pf1 n ;; Q1 =F[M1.0,M1.0] (!nat :N1 .. Pf1) ;; Q1
  !nat n:N1 .. Pf1 n |. m1 =F[M1.0,M1.0] (!nat :N1 .. Pf1) |. m1
  IF (Xs1 = {}) THEN DIV [+] Q1 ELSE !set X:Xs1 .. Pf1 X [+] Q1 =F[M1.0,M1.0] 
  (!set :Xs1 .. Pf1) [+] Q1
  IF (Xs1 = {}) THEN P1 [+] DIV ELSE !set X:Xs1 .. P1 [+] Qf1 X =F[M1.0,M1.0] 
  P1 [+] (!set :Xs1 .. Qf1)
  IF (Xs1 = {}) THEN DIV |[Y1]| Q1 ELSE !set X:Xs1 .. Pf1 X |[Y1]| Q1 
  =F[M1.0,M1.0] (!set :Xs1 .. Pf1) |[Y1]| Q1
  IF (Xs1 = {}) THEN P1 |[Y1]| DIV ELSE !set X:Xs1 .. P1 |[Y1]| Qf1 X 
  =F[M1.0,M1.0] P1 |[Y1]| (!set :Xs1 .. Qf1)
  !set X:Xs1 .. Pf1 X -- Y1 =F[M1.0,M1.0] (!set :Xs1 .. Pf1) -- Y1
  !set X:Xs1 .. Pf1 X [[r1]] =F[M1.0,M1.0] (!set :Xs1 .. Pf1) [[r1]]
  !set X:Xs1 .. Pf1 X ;; Q1 =F[M1.0,M1.0] (!set :Xs1 .. Pf1) ;; Q1
  !set X:Xs1 .. Pf1 X |. m1 =F[M1.0,M1.0] (!set :Xs1 .. Pf1) |. m1
  IF (X1 = {}) THEN DIV [+] Q1 ELSE ! x:X1 .. Pf1 x [+] Q1 =F[M1.0,M1.0] 
  (! :X1 .. Pf1) [+] Q1
  IF (X1 = {}) THEN P1 [+] DIV ELSE ! x:X1 .. P1 [+] Qf1 x =F[M1.0,M1.0] 
  P1 [+] (! :X1 .. Qf1)
  IF (Y1 = {}) THEN DIV |[X1]| Q1 ELSE ! x:Y1 .. Pf1 x |[X1]| Q1 =F[M1.0,M1.0] 
  (! :Y1 .. Pf1) |[X1]| Q1
  IF (Y1 = {}) THEN P1 |[X1]| DIV ELSE ! x:Y1 .. P1 |[X1]| Qf1 x =F[M1.0,M1.0] 
  P1 |[X1]| (! :Y1 .. Qf1)
  ! x:Y1 .. Pf1 x -- X1 =F[M1.0,M1.0] (! :Y1 .. Pf1) -- X1
  ! x:X1 .. Pf1 x [[r1]] =F[M1.0,M1.0] (! :X1 .. Pf1) [[r1]]
  ! x:X1 .. Pf1 x ;; Q1 =F[M1.0,M1.0] (! :X1 .. Pf1) ;; Q1
  ! x:X1 .. Pf1 x |. n1 =F[M1.0,M1.0] (! :X1 .. Pf1) |. n1
  IF (X1 = {}) THEN DIV [+] Q1 ELSE !<f1> x:X1 .. Pf1 x [+] Q1 =F[M1.0,M1.0] 
  (!<f1> :X1 .. Pf1) [+] Q1
  IF (X1 = {}) THEN P1 [+] DIV ELSE !<f1> x:X1 .. P1 [+] Qf1 x =F[M1.0,M1.0] 
  P1 [+] (!<f1> :X1 .. Qf1)
  IF (Y1 = {}) THEN DIV |[X1]| Q1 ELSE !<f1> x:Y1 .. Pf1 x |[X1]| Q1 
  =F[M1.0,M1.0] (!<f1> :Y1 .. Pf1) |[X1]| Q1
  IF (Y1 = {}) THEN P1 |[X1]| DIV ELSE !<f1> x:Y1 .. P1 |[X1]| Qf1 x 
  =F[M1.0,M1.0] P1 |[X1]| (!<f1> :Y1 .. Qf1)
  !<f1> x:Y1 .. Pf1 x -- X1 =F[M1.0,M1.0] (!<f1> :Y1 .. Pf1) -- X1
  !<f1> x:X1 .. Pf1 x [[r1]] =F[M1.0,M1.0] (!<f1> :X1 .. Pf1) [[r1]]
  !<f1> x:X1 .. Pf1 x ;; Q1 =F[M1.0,M1.0] (!<f1> :X1 .. Pf1) ;; Q1
  !<f1> x:X1 .. Pf1 x |. n1 =F[M1.0,M1.0] (!<f1> :X1 .. Pf1) |. n1
  P1.1 [[r1]] [+] P2.1 [[r1]] =F[M1.0,M1.0] (P1.1 [+] P2.1) [[r1]]
  P1.1 |. n1 [+] P2.1 |. n1 =F[M1.0,M1.0] (P1.1 [+] P2.1) |. n1

lemmas cspF_unwind_sym:

  [| Pf1 = PNfun;
     FPmode = CPOmode ∨ FPmode = CMSmode ∧ guardedfun Pf1 ∨ FPmode = MIXmode |]
  ==> Pf1 p1 =F $p1

lemmas cspF_unwind_sym:

  [| Pf1 = PNfun;
     FPmode = CPOmode ∨ FPmode = CMSmode ∧ guardedfun Pf1 ∨ FPmode = MIXmode |]
  ==> Pf1 p1 =F $p1

lemmas cspF_step_sym:

  ? :{} -> Pf1 =F[M2.0,M1.0] STOP
  ? x:{a1} -> P1 =F[M1.0,M1.0] a1 -> P1
  ? x:(X1Y1) 
   -> IF (xX1xY1) THEN Pf1 x |~| Qf1 x 
      ELSE IF (xX1) THEN Pf1 x ELSE Qf1 x 
  =F[M1.0,M1.0] ? :X1 -> Pf1 [+] ? :Y1 -> Qf1
  ? x:(X1Y1Z1 ∪ (Y1 - X1) ∪ (Z1 - X1)) 
   -> IF (xX1) THEN Pf1 x |[X1]| Qf1 x 
      ELSE IF (xY1xZ1) 
           THEN Pf1 x |[X1]| ? :Z1 -> Qf1 |~| ? :Y1 -> Pf1 |[X1]| Qf1 x 
           ELSE IF (xY1) THEN Pf1 x |[X1]| ? :Z1 -> Qf1 
                ELSE ? :Y1 -> Pf1 |[X1]| Qf1 x 
  =F[M1.0,M1.0] ? :Y1 -> Pf1 |[X1]| ? :Z1 -> Qf1
  IF (Y1X1 = {}) THEN ? x:Y1 -> Pf1 x -- X1 
  ELSE ? x:(Y1 - X1) -> Pf1 x -- X1 [> (! x:(Y1X1) .. Pf1 x -- X1) 
  =F[M1.0,M1.0] (? :Y1 -> Pf1) -- X1
  ? y:(r1 `` X1) -> (! x:{x : X1. (x, y) ∈ r1} .. Pf1 x [[r1]]) =F[M1.0,M1.0] 
  (? :X1 -> Pf1) [[r1]]
  ? x:X1 -> (Pf1 x ;; Q1) =F[M1.0,M1.0] ? :X1 -> Pf1 ;; Q1
  ? x:X1 -> Pf1 x |. n1 =F[M1.0,M1.0] (? :X1 -> Pf1) |. Suc n1

lemmas cspF_step_sym:

  ? :{} -> Pf1 =F[M2.0,M1.0] STOP
  ? x:{a1} -> P1 =F[M1.0,M1.0] a1 -> P1
  ? x:(X1Y1) 
   -> IF (xX1xY1) THEN Pf1 x |~| Qf1 x 
      ELSE IF (xX1) THEN Pf1 x ELSE Qf1 x 
  =F[M1.0,M1.0] ? :X1 -> Pf1 [+] ? :Y1 -> Qf1
  ? x:(X1Y1Z1 ∪ (Y1 - X1) ∪ (Z1 - X1)) 
   -> IF (xX1) THEN Pf1 x |[X1]| Qf1 x 
      ELSE IF (xY1xZ1) 
           THEN Pf1 x |[X1]| ? :Z1 -> Qf1 |~| ? :Y1 -> Pf1 |[X1]| Qf1 x 
           ELSE IF (xY1) THEN Pf1 x |[X1]| ? :Z1 -> Qf1 
                ELSE ? :Y1 -> Pf1 |[X1]| Qf1 x 
  =F[M1.0,M1.0] ? :Y1 -> Pf1 |[X1]| ? :Z1 -> Qf1
  IF (Y1X1 = {}) THEN ? x:Y1 -> Pf1 x -- X1 
  ELSE ? x:(Y1 - X1) -> Pf1 x -- X1 [> (! x:(Y1X1) .. Pf1 x -- X1) 
  =F[M1.0,M1.0] (? :Y1 -> Pf1) -- X1
  ? y:(r1 `` X1) -> (! x:{x : X1. (x, y) ∈ r1} .. Pf1 x [[r1]]) =F[M1.0,M1.0] 
  (? :X1 -> Pf1) [[r1]]
  ? x:X1 -> (Pf1 x ;; Q1) =F[M1.0,M1.0] ? :X1 -> Pf1 ;; Q1
  ? x:X1 -> Pf1 x |. n1 =F[M1.0,M1.0] (? :X1 -> Pf1) |. Suc n1