Definition Clight_g : Clight.genv := Clight.globalenv C_program.Definition CSem : Semantics := ClightSemanticsForMachines.ClightSem Clight_g.Definition Cself_simulation := clight_self_simulation Clight_g.Definition Clight_code_inject := self_simulation.code_inject _ _ Cself_simulation.Definition Clight_match := self_simulation.match_self Clight_code_inject.Definition Asm_g := (@the_ge Asm_program).Definition Aself_simulation := Asm_self_simulation Asm_g.Definition Asm_code_inject := self_simulation.code_inject _ _ Aself_simulation.Definition Asm_match := self_simulation.match_self Asm_code_inject.(** *AsHybrid Semantics and Machine*)
  Definition AsmSem : Semantics := @X86Sem Asm_program Asm_genv_safe.(** The hybrid semantics*)
  Instance HybridSem h : Semantics := CoreSem_Sum h CSem AsmSem.Notation TP h := (threadPool.OrdinalPool.OrdinalThreadPool(Sem:=HybridSem h)).Definition HybMachine h:=
    HybridMachineSig.HybridCoarseMachine.HybridCoarseMachine
      (ThreadPool:= TP h).Definition HybConcSem h:=
    HybridMachineSig.ConcurMachineSemantics(HybridMachine:=HybMachine h).Notation ThreadPool n :=
    (ThreadPool.t(Sem:= HybridSem n)).Definition compiler_sim:= CC_correct.simpl_clight_semantic_preservation _ _ compiled.Definition compiler_index: Type:= Injindex compiler_sim.Definition compiler_match (i:compiler_index) (j:meminj)
       (c1:  Smallstep.state (Smallstep.part_sem (Clight.semantics2 C_program)))
       (m1: mem)
       (c2: Smallstep.state (Asm.part_semantics Asm_g))
       (m2: mem): Prop
    := Injmatch_states compiler_sim i j
                       (Smallstep.set_mem c1 m1)
                       (Smallstep.set_mem c2 m2).(* Compiler match that holds under interference of other threads. *)
  Inductive compiler_match_padded:
    compiler_index -> meminj -> Smallstep.state (Smallstep.part_sem (Clight.semantics2 C_program)) ->
    mem -> Smallstep.state (Asm.part_semantics Asm_g) -> mem -> Prop
    :=
    | BuildCompilerMatch: forall cd j1 j2 j3 j s1 m1 s2 m2 s3 m3 s4 m4,
        Clight_match j1 s1 m1 s2 m2 ->
        compiler_match cd j2 s2 m2 s3 m3 ->
        Asm_match j3 s3 m3 s4 m4 ->
        compose_meminj (compose_meminj j1 j2) j3 = j ->
        compiler_match_padded cd j s1 m1 s4 m4.(* Compiler match that holds under interference of other threads. *)
  Inductive compiler_match_padded:
    compiler_index -> meminj -> Smallstep.state (Smallstep.part_sem (Clight.semantics2 C_program)) ->
    mem -> Smallstep.state (Asm.part_semantics Asm_g) -> mem -> Prop
    :=
    | BuildCompilerMatch: forall cd j1 j2 j3 j s1 m1 s2 m2 s3 m3 s4 m4,
        Clight_match j1 s1 m1 s2 m2 ->
        compiler_match cd j2 s2 m2 s3 m3 ->
        Asm_match j3 s3 m3 s4 m4 ->
        compose_meminj (compose_meminj j1 j2) j3 = j ->
        compiler_match_padded cd j s1 m1 s4 m4.Definition SemTop: Semantics:= (HybridSem (Some hb)).Definition SemBot: Semantics:= (HybridSem (Some (S hb))).Inductive match_state2match_thread
              {sem1 sem2: Semantics}
              (SState: @semC sem1 -> state_sum (@semC CSem) (@semC AsmSem))
              (TState: @semC sem2 -> state_sum (@semC CSem) (@semC AsmSem))
              (match_state : meminj -> @semC sem1 -> mem -> @semC sem2 -> mem -> Prop) :
    meminj ->
    @ctl (@semC SemTop) -> mem ->
    @ctl (@semC SemBot) -> mem -> Prop  :=
  | CThread_Running: forall j code1 m1 code2 m2,
      match_state j code1 m1 code2 m2 ->
      match_state2match_thread SState TState match_state j (Krun (SState code1)) m1
                            (Krun (TState code2)) m2
  | CThread_Blocked: forall j code1 m1 code2 m2,
      match_state j code1 m1 code2 m2 ->
      match_state2match_thread SState TState match_state j (Kblocked (SState code1)) m1
                            (Kblocked (TState code2)) m2
  | CThread_Resume: forall j code1 m1 code2 m2 v v',
      match_state2match_thread SState TState match_state j (Kresume (SState code1) v) m1
                            (Kresume (TState code2) v') m2
  | CThread_Init: forall j m1 m2 v1 v1' v2 v2',
      Val.inject j v1 v2 ->
      Val.inject j v1' v2' ->
      match_state2match_thread SState TState match_state j (Kinit v1 v1') m1
                               (Kinit v1 v1') m2.Inductive match_state2match_thread
              {sem1 sem2: Semantics}
              (SState: @semC sem1 -> state_sum (@semC CSem) (@semC AsmSem))
              (TState: @semC sem2 -> state_sum (@semC CSem) (@semC AsmSem))
              (match_state : meminj -> @semC sem1 -> mem -> @semC sem2 -> mem -> Prop) :
    meminj ->
    @ctl (@semC SemTop) -> mem ->
    @ctl (@semC SemBot) -> mem -> Prop  :=
  | CThread_Running: forall j code1 m1 code2 m2,
      match_state j code1 m1 code2 m2 ->
      match_state2match_thread SState TState match_state j (Krun (SState code1)) m1
                            (Krun (TState code2)) m2
  | CThread_Blocked: forall j code1 m1 code2 m2,
      match_state j code1 m1 code2 m2 ->
      match_state2match_thread SState TState match_state j (Kblocked (SState code1)) m1
                            (Kblocked (TState code2)) m2
  | CThread_Resume: forall j code1 m1 code2 m2 v v',
      match_state2match_thread SState TState match_state j (Kresume (SState code1) v) m1
                            (Kresume (TState code2) v') m2
  | CThread_Init: forall j m1 m2 v1 v1' v2 v2',
      Val.inject j v1 v2 ->
      Val.inject j v1' v2' ->
      match_state2match_thread SState TState match_state j (Kinit v1 v1') m1
                               (Kinit v1 v1') m2.Inductive match_state2match_thread
              {sem1 sem2: Semantics}
              (SState: @semC sem1 -> state_sum (@semC CSem) (@semC AsmSem))
              (TState: @semC sem2 -> state_sum (@semC CSem) (@semC AsmSem))
              (match_state : meminj -> @semC sem1 -> mem -> @semC sem2 -> mem -> Prop) :
    meminj ->
    @ctl (@semC SemTop) -> mem ->
    @ctl (@semC SemBot) -> mem -> Prop  :=
  | CThread_Running: forall j code1 m1 code2 m2,
      match_state j code1 m1 code2 m2 ->
      match_state2match_thread SState TState match_state j (Krun (SState code1)) m1
                            (Krun (TState code2)) m2
  | CThread_Blocked: forall j code1 m1 code2 m2,
      match_state j code1 m1 code2 m2 ->
      match_state2match_thread SState TState match_state j (Kblocked (SState code1)) m1
                            (Kblocked (TState code2)) m2
  | CThread_Resume: forall j code1 m1 code2 m2 v v',
      match_state2match_thread SState TState match_state j (Kresume (SState code1) v) m1
                            (Kresume (TState code2) v') m2
  | CThread_Init: forall j m1 m2 v1 v1' v2 v2',
      Val.inject j v1 v2 ->
      Val.inject j v1' v2' ->
      match_state2match_thread SState TState match_state j (Kinit v1 v1') m1
                               (Kinit v1 v1') m2.Inductive match_state2match_thread
              {sem1 sem2: Semantics}
              (SState: @semC sem1 -> state_sum (@semC CSem) (@semC AsmSem))
              (TState: @semC sem2 -> state_sum (@semC CSem) (@semC AsmSem))
              (match_state : meminj -> @semC sem1 -> mem -> @semC sem2 -> mem -> Prop) :
    meminj ->
    @ctl (@semC SemTop) -> mem ->
    @ctl (@semC SemBot) -> mem -> Prop  :=
  | CThread_Running: forall j code1 m1 code2 m2,
      match_state j code1 m1 code2 m2 ->
      match_state2match_thread SState TState match_state j (Krun (SState code1)) m1
                            (Krun (TState code2)) m2
  | CThread_Blocked: forall j code1 m1 code2 m2,
      match_state j code1 m1 code2 m2 ->
      match_state2match_thread SState TState match_state j (Kblocked (SState code1)) m1
                            (Kblocked (TState code2)) m2
  | CThread_Resume: forall j code1 m1 code2 m2 v v',
      match_state2match_thread SState TState match_state j (Kresume (SState code1) v) m1
                            (Kresume (TState code2) v') m2
  | CThread_Init: forall j m1 m2 v1 v1' v2 v2',
      Val.inject j v1 v2 ->
      Val.inject j v1' v2' ->
      match_state2match_thread SState TState match_state j (Kinit v1 v1') m1
                               (Kinit v1 v1') m2.Inductive match_state2match_thread
              {sem1 sem2: Semantics}
              (SState: @semC sem1 -> state_sum (@semC CSem) (@semC AsmSem))
              (TState: @semC sem2 -> state_sum (@semC CSem) (@semC AsmSem))
              (match_state : meminj -> @semC sem1 -> mem -> @semC sem2 -> mem -> Prop) :
    meminj ->
    @ctl (@semC SemTop) -> mem ->
    @ctl (@semC SemBot) -> mem -> Prop  :=
  | CThread_Running: forall j code1 m1 code2 m2,
      match_state j code1 m1 code2 m2 ->
      match_state2match_thread SState TState match_state j (Krun (SState code1)) m1
                            (Krun (TState code2)) m2
  | CThread_Blocked: forall j code1 m1 code2 m2,
      match_state j code1 m1 code2 m2 ->
      match_state2match_thread SState TState match_state j (Kblocked (SState code1)) m1
                            (Kblocked (TState code2)) m2
  | CThread_Resume: forall j code1 m1 code2 m2 v v',
      match_state2match_thread SState TState match_state j (Kresume (SState code1) v) m1
                            (Kresume (TState code2) v') m2
  | CThread_Init: forall j m1 m2 v1 v1' v2 v2',
      Val.inject j v1 v2 ->
      Val.inject j v1' v2' ->
      match_state2match_thread SState TState match_state j (Kinit v1 v1') m1
                               (Kinit v1 v1') m2.Definition SST := SState (@semC CSem) (@semC AsmSem).Definition TST := TState (@semC CSem) (@semC AsmSem).Definition match_thread_source:
      meminj -> @ctl (@semC SemTop) -> mem -> @ctl (@semC SemBot) -> mem -> Prop:=
      match_state2match_thread SST SST
                               Clight_match.Definition match_thread_target:
      meminj -> @ctl (@semC SemTop) -> mem -> @ctl (@semC SemBot) -> mem -> Prop:=
      match_state2match_thread TST TST
                               Asm_match.Definition match_thread_compiled cd:
      meminj -> @ctl (@semC SemTop) -> mem -> @ctl (@semC SemBot) -> mem -> Prop:=
      match_state2match_thread SST TST
                               (compiler_match_padded cd).(* NOTE: Old version*)
  (* Inductive match_thread_compiled:
    compiler_index -> meminj ->
    @ctl (@semC SemTop) -> mem ->
    @ctl (@semC SemBot) -> mem -> Prop  :=
  | CThread_Running': forall cd j code1 m1 code2 m2,
      compiler_match cd j (Smallstep.set_mem code1 m1) (Smallstep.set_mem code2 m2) ->
      match_thread_compiled cd j (Krun (SState _ _ code1)) m1
                            (Krun (TState _ _ code2)) m2
  | CThread_Blocked': forall cd j code1 m1 code2 m2,
      compiler_match cd j (Smallstep.set_mem code1 m1) (Smallstep.set_mem code2 m2) ->
      match_thread_compiled  cd j (Kblocked (SState _ _ code1)) m1
                            (Kblocked (TState _ _ code2)) m2
  | CThread_Resume': forall cd j code1 m1 code2 m2 v v',
      (*Do I need to keep this two? Probanly not*)
      (*semantics.at_external (CoreSem Sems) genvS code1 m1 = Some (f,ls1) ->
      semantics.at_external (CoreSem Semt) genvT code2 m2 = Some (f',ls2) ->
      Val.inject_list j ls1 ls2 ->
      semantics.after_external (CoreSem Sems) genvS None code1 = Some code1' ->
      semantics.after_external (CoreSem Semt) genvT None code2 = Some code2' -> *)
      compiler_match cd j (Smallstep.set_mem code1 m1) (Smallstep.set_mem code2 m2) ->
      match_thread_compiled cd j (Kresume (SState _ _ code1) v) m1
                            (Kresume (TState _ _ code2) v') m2
  | CThread_Init': forall cd j m1 m2 v1 v1' v2 v2',
      Val.inject j v1 v2 ->
      Val.inject j v1' v2' ->
      match_thread_compiled cd j (Kinit v1 v1') m1
                            (Kinit v2 v2') m2. *)



    
    Definition merge_func {A} (f1 f2:Z -> option A):
      (BinNums.Z -> option A):=
      fun ofs =>
        match f1 ofs with
          None => f2 ofs
        | _ => f1 ofs
        end.(* PTree.map: forall A B : Type, (positive -> A -> B) -> PTree.t A -> PTree.t B *)

    Fixpoint build_function_for_a_block
             (mu:meminj) {A} (b: positive) (ls: list (positive * (Z -> option A))):
      Z -> option A:=
      match ls with
      | nil => (fun _ => None)
      | (b0, fb)::ls' =>
        match mu b0 with
        | Some (b1, delt) =>
          if PMap.elt_eq b b1 then
            merge_func (fun p => (fb (p - delt)%Z)) (build_function_for_a_block mu b ls')
          else  (build_function_for_a_block mu b ls')
        | None => (build_function_for_a_block mu b ls') 
        end
      end.Definition tree_map_inject_over_tree {A B} (t:PTree.t (Z -> option B))(mu:meminj) (map:PTree.t (Z -> option A)):
      PTree.t (Z -> option A):=
      PTree.map (fun b _ => build_function_for_a_block mu b (PTree.elements map)) t.Definition tree_map_inject_over_mem {A} m mu map:
      PTree.t (Z -> option A) :=
      tree_map_inject_over_tree (snd (getMaxPerm m)) mu map.(* apply an injections to the elements of a tree. *)
    Fixpoint apply_injection_elements
             {A}
             (mu:meminj) (ls: list (positive * (Z -> option A)))
      : list (positive * (Z -> option A)) :=
      match ls with
        nil => nil
      | cons (b, ofs_f) ls' =>
        match (mu b) with
        | None => apply_injection_elements mu ls'
        | Some (b',d) =>
          cons
            (b', fun ofs => ofs_f (ofs-d)%Z)
            (apply_injection_elements mu ls')
        end
      end.Fixpoint extract_function_for_block
             {A} (b: positive) (ls: list (positive * (Z -> option A)))
      : Z -> option A :=
      match ls with
        nil => fun _ => None
      | cons (b', ofs_f') ls' =>
        if (Pos.eq_dec b b') then
          merge_func ofs_f' (extract_function_for_block b ls')
        else (extract_function_for_block b ls')
      end.Fixpoint map_from_list
             {A:Type}
             (mu:meminj) (ls: list (positive * (Z -> option A))):
      PTree.t (Z -> option A) :=
      match ls with
        nil => @PTree.empty (BinNums.Z -> option A)
      | cons (b, ofs_f) ls =>
        let t:= map_from_list mu ls in
        match mu b with
          None => t
        | Some (b',d) =>
          match PTree.get b' t with
            None => PTree.set b' (fun ofs => ofs_f (ofs-d)%Z) t
          | Some f_old =>
            PTree.set b' (merge_func (fun ofs => ofs_f (ofs-d)%Z) f_old) t
          end
        end
      end.Definition tree_map_inject {A}(mu:meminj) (map:PTree.t (Z -> option A)):
      PTree.t (Z -> option A):=
      map_from_list mu (PTree.elements map).Definition virtueThread_inject m (mu:meminj) (virtue:delta_map * delta_map):
      delta_map * delta_map:=
      let (m1,m2):= virtue in
      (tree_map_inject_over_mem m mu m1, tree_map_inject_over_mem m mu m2).(* Second construct the virtueLP:
               the permissions transfered to the Lock pool
     *)
    Definition access_map_inject m (mu:meminj) (map:access_map):
      access_map:=
      (fst map, tree_map_inject_over_mem m mu (snd map)).Definition virtueLP_inject m (mu:meminj) (virtue:access_map * access_map):
      access_map * access_map:=
      (access_map_inject m mu (fst virtue), access_map_inject m mu (snd virtue)).Record concur_match (ocd: option compiler_index)
           (j:meminj) (cstate1: ThreadPool (Some hb)) (m1: Mem.mem) (cstate2: ThreadPool(Some (S hb))) (m2: mem):=
      { same_length: num_threads cstate1 = num_threads cstate2
        ; memcompat1: mem_compatible cstate1 m1
        ; memcompat2: mem_compatible cstate2 m2
        ; INJ: Mem.inject j m1 m2
        ; INJ_threads:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj1 (memcompat1 i cnti1)))
                         (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; INJ_locks:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj2 (memcompat1 i cnti1)))
                         (restrPermMap (proj2 (memcompat2 i cnti2)))
        ; INJ_lock_content:
            forall b b' delt rmap,
              j b = Some (b', delt) ->
              forall ofs, lockRes cstate1 (b, intval ofs) = Some rmap ->
                     lockRes cstate2 (b', intval (add ofs (repr delt))) =
                     Some (virtueLP_inject m2 j rmap)
        ; taret_invariant: invariant cstate2
        ; mtch_source:
            forall (i:nat),
              (i > hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_source j
                                    (getThreadC cnti1)
                                    (restrPermMap (proj1 (memcompat1 i cnti1)))
                                    (getThreadC cnti2)
                                    (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; mtch_target:
            forall (i:nat),
              (i < hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_target  j
                                     (getThreadC cnti1)
                                     (restrPermMap (proj1(memcompat1 i cnti1)))
                                     (getThreadC cnti2)
                                     (restrPermMap (proj1(memcompat2 i cnti2)))
        ; mtch_compiled:
            forall (i:nat),
              (i = hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
              exists cd, ocd = Some cd /\
                    match_thread_compiled cd j
                                          (getThreadC cnti1)
                                          (restrPermMap (proj1 (memcompat1 i cnti1)))
                                          (getThreadC cnti2)
                                          (restrPermMap (proj1 (memcompat2 i cnti2))) }.Record concur_match (ocd: option compiler_index)
           (j:meminj) (cstate1: ThreadPool (Some hb)) (m1: Mem.mem) (cstate2: ThreadPool(Some (S hb))) (m2: mem):=
      { same_length: num_threads cstate1 = num_threads cstate2
        ; memcompat1: mem_compatible cstate1 m1
        ; memcompat2: mem_compatible cstate2 m2
        ; INJ: Mem.inject j m1 m2
        ; INJ_threads:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj1 (memcompat1 i cnti1)))
                         (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; INJ_locks:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj2 (memcompat1 i cnti1)))
                         (restrPermMap (proj2 (memcompat2 i cnti2)))
        ; INJ_lock_content:
            forall b b' delt rmap,
              j b = Some (b', delt) ->
              forall ofs, lockRes cstate1 (b, intval ofs) = Some rmap ->
                     lockRes cstate2 (b', intval (add ofs (repr delt))) =
                     Some (virtueLP_inject m2 j rmap)
        ; taret_invariant: invariant cstate2
        ; mtch_source:
            forall (i:nat),
              (i > hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_source j
                                    (getThreadC cnti1)
                                    (restrPermMap (proj1 (memcompat1 i cnti1)))
                                    (getThreadC cnti2)
                                    (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; mtch_target:
            forall (i:nat),
              (i < hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_target  j
                                     (getThreadC cnti1)
                                     (restrPermMap (proj1(memcompat1 i cnti1)))
                                     (getThreadC cnti2)
                                     (restrPermMap (proj1(memcompat2 i cnti2)))
        ; mtch_compiled:
            forall (i:nat),
              (i = hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
              exists cd, ocd = Some cd /\
                    match_thread_compiled cd j
                                          (getThreadC cnti1)
                                          (restrPermMap (proj1 (memcompat1 i cnti1)))
                                          (getThreadC cnti2)
                                          (restrPermMap (proj1 (memcompat2 i cnti2))) }.Record concur_match (ocd: option compiler_index)
           (j:meminj) (cstate1: ThreadPool (Some hb)) (m1: Mem.mem) (cstate2: ThreadPool(Some (S hb))) (m2: mem):=
      { same_length: num_threads cstate1 = num_threads cstate2
        ; memcompat1: mem_compatible cstate1 m1
        ; memcompat2: mem_compatible cstate2 m2
        ; INJ: Mem.inject j m1 m2
        ; INJ_threads:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj1 (memcompat1 i cnti1)))
                         (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; INJ_locks:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj2 (memcompat1 i cnti1)))
                         (restrPermMap (proj2 (memcompat2 i cnti2)))
        ; INJ_lock_content:
            forall b b' delt rmap,
              j b = Some (b', delt) ->
              forall ofs, lockRes cstate1 (b, intval ofs) = Some rmap ->
                     lockRes cstate2 (b', intval (add ofs (repr delt))) =
                     Some (virtueLP_inject m2 j rmap)
        ; taret_invariant: invariant cstate2
        ; mtch_source:
            forall (i:nat),
              (i > hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_source j
                                    (getThreadC cnti1)
                                    (restrPermMap (proj1 (memcompat1 i cnti1)))
                                    (getThreadC cnti2)
                                    (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; mtch_target:
            forall (i:nat),
              (i < hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_target  j
                                     (getThreadC cnti1)
                                     (restrPermMap (proj1(memcompat1 i cnti1)))
                                     (getThreadC cnti2)
                                     (restrPermMap (proj1(memcompat2 i cnti2)))
        ; mtch_compiled:
            forall (i:nat),
              (i = hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
              exists cd, ocd = Some cd /\
                    match_thread_compiled cd j
                                          (getThreadC cnti1)
                                          (restrPermMap (proj1 (memcompat1 i cnti1)))
                                          (getThreadC cnti2)
                                          (restrPermMap (proj1 (memcompat2 i cnti2))) }.Record concur_match (ocd: option compiler_index)
           (j:meminj) (cstate1: ThreadPool (Some hb)) (m1: Mem.mem) (cstate2: ThreadPool(Some (S hb))) (m2: mem):=
      { same_length: num_threads cstate1 = num_threads cstate2
        ; memcompat1: mem_compatible cstate1 m1
        ; memcompat2: mem_compatible cstate2 m2
        ; INJ: Mem.inject j m1 m2
        ; INJ_threads:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj1 (memcompat1 i cnti1)))
                         (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; INJ_locks:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj2 (memcompat1 i cnti1)))
                         (restrPermMap (proj2 (memcompat2 i cnti2)))
        ; INJ_lock_content:
            forall b b' delt rmap,
              j b = Some (b', delt) ->
              forall ofs, lockRes cstate1 (b, intval ofs) = Some rmap ->
                     lockRes cstate2 (b', intval (add ofs (repr delt))) =
                     Some (virtueLP_inject m2 j rmap)
        ; taret_invariant: invariant cstate2
        ; mtch_source:
            forall (i:nat),
              (i > hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_source j
                                    (getThreadC cnti1)
                                    (restrPermMap (proj1 (memcompat1 i cnti1)))
                                    (getThreadC cnti2)
                                    (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; mtch_target:
            forall (i:nat),
              (i < hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_target  j
                                     (getThreadC cnti1)
                                     (restrPermMap (proj1(memcompat1 i cnti1)))
                                     (getThreadC cnti2)
                                     (restrPermMap (proj1(memcompat2 i cnti2)))
        ; mtch_compiled:
            forall (i:nat),
              (i = hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
              exists cd, ocd = Some cd /\
                    match_thread_compiled cd j
                                          (getThreadC cnti1)
                                          (restrPermMap (proj1 (memcompat1 i cnti1)))
                                          (getThreadC cnti2)
                                          (restrPermMap (proj1 (memcompat2 i cnti2))) }.Record concur_match (ocd: option compiler_index)
           (j:meminj) (cstate1: ThreadPool (Some hb)) (m1: Mem.mem) (cstate2: ThreadPool(Some (S hb))) (m2: mem):=
      { same_length: num_threads cstate1 = num_threads cstate2
        ; memcompat1: mem_compatible cstate1 m1
        ; memcompat2: mem_compatible cstate2 m2
        ; INJ: Mem.inject j m1 m2
        ; INJ_threads:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj1 (memcompat1 i cnti1)))
                         (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; INJ_locks:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj2 (memcompat1 i cnti1)))
                         (restrPermMap (proj2 (memcompat2 i cnti2)))
        ; INJ_lock_content:
            forall b b' delt rmap,
              j b = Some (b', delt) ->
              forall ofs, lockRes cstate1 (b, intval ofs) = Some rmap ->
                     lockRes cstate2 (b', intval (add ofs (repr delt))) =
                     Some (virtueLP_inject m2 j rmap)
        ; taret_invariant: invariant cstate2
        ; mtch_source:
            forall (i:nat),
              (i > hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_source j
                                    (getThreadC cnti1)
                                    (restrPermMap (proj1 (memcompat1 i cnti1)))
                                    (getThreadC cnti2)
                                    (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; mtch_target:
            forall (i:nat),
              (i < hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_target  j
                                     (getThreadC cnti1)
                                     (restrPermMap (proj1(memcompat1 i cnti1)))
                                     (getThreadC cnti2)
                                     (restrPermMap (proj1(memcompat2 i cnti2)))
        ; mtch_compiled:
            forall (i:nat),
              (i = hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
              exists cd, ocd = Some cd /\
                    match_thread_compiled cd j
                                          (getThreadC cnti1)
                                          (restrPermMap (proj1 (memcompat1 i cnti1)))
                                          (getThreadC cnti2)
                                          (restrPermMap (proj1 (memcompat2 i cnti2))) }.Record concur_match (ocd: option compiler_index)
           (j:meminj) (cstate1: ThreadPool (Some hb)) (m1: Mem.mem) (cstate2: ThreadPool(Some (S hb))) (m2: mem):=
      { same_length: num_threads cstate1 = num_threads cstate2
        ; memcompat1: mem_compatible cstate1 m1
        ; memcompat2: mem_compatible cstate2 m2
        ; INJ: Mem.inject j m1 m2
        ; INJ_threads:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj1 (memcompat1 i cnti1)))
                         (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; INJ_locks:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj2 (memcompat1 i cnti1)))
                         (restrPermMap (proj2 (memcompat2 i cnti2)))
        ; INJ_lock_content:
            forall b b' delt rmap,
              j b = Some (b', delt) ->
              forall ofs, lockRes cstate1 (b, intval ofs) = Some rmap ->
                     lockRes cstate2 (b', intval (add ofs (repr delt))) =
                     Some (virtueLP_inject m2 j rmap)
        ; taret_invariant: invariant cstate2
        ; mtch_source:
            forall (i:nat),
              (i > hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_source j
                                    (getThreadC cnti1)
                                    (restrPermMap (proj1 (memcompat1 i cnti1)))
                                    (getThreadC cnti2)
                                    (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; mtch_target:
            forall (i:nat),
              (i < hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_target  j
                                     (getThreadC cnti1)
                                     (restrPermMap (proj1(memcompat1 i cnti1)))
                                     (getThreadC cnti2)
                                     (restrPermMap (proj1(memcompat2 i cnti2)))
        ; mtch_compiled:
            forall (i:nat),
              (i = hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
              exists cd, ocd = Some cd /\
                    match_thread_compiled cd j
                                          (getThreadC cnti1)
                                          (restrPermMap (proj1 (memcompat1 i cnti1)))
                                          (getThreadC cnti2)
                                          (restrPermMap (proj1 (memcompat2 i cnti2))) }.Record concur_match (ocd: option compiler_index)
           (j:meminj) (cstate1: ThreadPool (Some hb)) (m1: Mem.mem) (cstate2: ThreadPool(Some (S hb))) (m2: mem):=
      { same_length: num_threads cstate1 = num_threads cstate2
        ; memcompat1: mem_compatible cstate1 m1
        ; memcompat2: mem_compatible cstate2 m2
        ; INJ: Mem.inject j m1 m2
        ; INJ_threads:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj1 (memcompat1 i cnti1)))
                         (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; INJ_locks:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj2 (memcompat1 i cnti1)))
                         (restrPermMap (proj2 (memcompat2 i cnti2)))
        ; INJ_lock_content:
            forall b b' delt rmap,
              j b = Some (b', delt) ->
              forall ofs, lockRes cstate1 (b, intval ofs) = Some rmap ->
                     lockRes cstate2 (b', intval (add ofs (repr delt))) =
                     Some (virtueLP_inject m2 j rmap)
        ; taret_invariant: invariant cstate2
        ; mtch_source:
            forall (i:nat),
              (i > hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_source j
                                    (getThreadC cnti1)
                                    (restrPermMap (proj1 (memcompat1 i cnti1)))
                                    (getThreadC cnti2)
                                    (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; mtch_target:
            forall (i:nat),
              (i < hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_target  j
                                     (getThreadC cnti1)
                                     (restrPermMap (proj1(memcompat1 i cnti1)))
                                     (getThreadC cnti2)
                                     (restrPermMap (proj1(memcompat2 i cnti2)))
        ; mtch_compiled:
            forall (i:nat),
              (i = hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
              exists cd, ocd = Some cd /\
                    match_thread_compiled cd j
                                          (getThreadC cnti1)
                                          (restrPermMap (proj1 (memcompat1 i cnti1)))
                                          (getThreadC cnti2)
                                          (restrPermMap (proj1 (memcompat2 i cnti2))) }.Record concur_match (ocd: option compiler_index)
           (j:meminj) (cstate1: ThreadPool (Some hb)) (m1: Mem.mem) (cstate2: ThreadPool(Some (S hb))) (m2: mem):=
      { same_length: num_threads cstate1 = num_threads cstate2
        ; memcompat1: mem_compatible cstate1 m1
        ; memcompat2: mem_compatible cstate2 m2
        ; INJ: Mem.inject j m1 m2
        ; INJ_threads:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj1 (memcompat1 i cnti1)))
                         (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; INJ_locks:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj2 (memcompat1 i cnti1)))
                         (restrPermMap (proj2 (memcompat2 i cnti2)))
        ; INJ_lock_content:
            forall b b' delt rmap,
              j b = Some (b', delt) ->
              forall ofs, lockRes cstate1 (b, intval ofs) = Some rmap ->
                     lockRes cstate2 (b', intval (add ofs (repr delt))) =
                     Some (virtueLP_inject m2 j rmap)
        ; taret_invariant: invariant cstate2
        ; mtch_source:
            forall (i:nat),
              (i > hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_source j
                                    (getThreadC cnti1)
                                    (restrPermMap (proj1 (memcompat1 i cnti1)))
                                    (getThreadC cnti2)
                                    (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; mtch_target:
            forall (i:nat),
              (i < hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_target  j
                                     (getThreadC cnti1)
                                     (restrPermMap (proj1(memcompat1 i cnti1)))
                                     (getThreadC cnti2)
                                     (restrPermMap (proj1(memcompat2 i cnti2)))
        ; mtch_compiled:
            forall (i:nat),
              (i = hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
              exists cd, ocd = Some cd /\
                    match_thread_compiled cd j
                                          (getThreadC cnti1)
                                          (restrPermMap (proj1 (memcompat1 i cnti1)))
                                          (getThreadC cnti2)
                                          (restrPermMap (proj1 (memcompat2 i cnti2))) }.Record concur_match (ocd: option compiler_index)
           (j:meminj) (cstate1: ThreadPool (Some hb)) (m1: Mem.mem) (cstate2: ThreadPool(Some (S hb))) (m2: mem):=
      { same_length: num_threads cstate1 = num_threads cstate2
        ; memcompat1: mem_compatible cstate1 m1
        ; memcompat2: mem_compatible cstate2 m2
        ; INJ: Mem.inject j m1 m2
        ; INJ_threads:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj1 (memcompat1 i cnti1)))
                         (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; INJ_locks:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj2 (memcompat1 i cnti1)))
                         (restrPermMap (proj2 (memcompat2 i cnti2)))
        ; INJ_lock_content:
            forall b b' delt rmap,
              j b = Some (b', delt) ->
              forall ofs, lockRes cstate1 (b, intval ofs) = Some rmap ->
                     lockRes cstate2 (b', intval (add ofs (repr delt))) =
                     Some (virtueLP_inject m2 j rmap)
        ; taret_invariant: invariant cstate2
        ; mtch_source:
            forall (i:nat),
              (i > hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_source j
                                    (getThreadC cnti1)
                                    (restrPermMap (proj1 (memcompat1 i cnti1)))
                                    (getThreadC cnti2)
                                    (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; mtch_target:
            forall (i:nat),
              (i < hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_target  j
                                     (getThreadC cnti1)
                                     (restrPermMap (proj1(memcompat1 i cnti1)))
                                     (getThreadC cnti2)
                                     (restrPermMap (proj1(memcompat2 i cnti2)))
        ; mtch_compiled:
            forall (i:nat),
              (i = hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
              exists cd, ocd = Some cd /\
                    match_thread_compiled cd j
                                          (getThreadC cnti1)
                                          (restrPermMap (proj1 (memcompat1 i cnti1)))
                                          (getThreadC cnti2)
                                          (restrPermMap (proj1 (memcompat2 i cnti2))) }.Record concur_match (ocd: option compiler_index)
           (j:meminj) (cstate1: ThreadPool (Some hb)) (m1: Mem.mem) (cstate2: ThreadPool(Some (S hb))) (m2: mem):=
      { same_length: num_threads cstate1 = num_threads cstate2
        ; memcompat1: mem_compatible cstate1 m1
        ; memcompat2: mem_compatible cstate2 m2
        ; INJ: Mem.inject j m1 m2
        ; INJ_threads:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj1 (memcompat1 i cnti1)))
                         (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; INJ_locks:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj2 (memcompat1 i cnti1)))
                         (restrPermMap (proj2 (memcompat2 i cnti2)))
        ; INJ_lock_content:
            forall b b' delt rmap,
              j b = Some (b', delt) ->
              forall ofs, lockRes cstate1 (b, intval ofs) = Some rmap ->
                     lockRes cstate2 (b', intval (add ofs (repr delt))) =
                     Some (virtueLP_inject m2 j rmap)
        ; taret_invariant: invariant cstate2
        ; mtch_source:
            forall (i:nat),
              (i > hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_source j
                                    (getThreadC cnti1)
                                    (restrPermMap (proj1 (memcompat1 i cnti1)))
                                    (getThreadC cnti2)
                                    (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; mtch_target:
            forall (i:nat),
              (i < hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_target  j
                                     (getThreadC cnti1)
                                     (restrPermMap (proj1(memcompat1 i cnti1)))
                                     (getThreadC cnti2)
                                     (restrPermMap (proj1(memcompat2 i cnti2)))
        ; mtch_compiled:
            forall (i:nat),
              (i = hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
              exists cd, ocd = Some cd /\
                    match_thread_compiled cd j
                                          (getThreadC cnti1)
                                          (restrPermMap (proj1 (memcompat1 i cnti1)))
                                          (getThreadC cnti2)
                                          (restrPermMap (proj1 (memcompat2 i cnti2))) }.Record concur_match (ocd: option compiler_index)
           (j:meminj) (cstate1: ThreadPool (Some hb)) (m1: Mem.mem) (cstate2: ThreadPool(Some (S hb))) (m2: mem):=
      { same_length: num_threads cstate1 = num_threads cstate2
        ; memcompat1: mem_compatible cstate1 m1
        ; memcompat2: mem_compatible cstate2 m2
        ; INJ: Mem.inject j m1 m2
        ; INJ_threads:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj1 (memcompat1 i cnti1)))
                         (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; INJ_locks:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj2 (memcompat1 i cnti1)))
                         (restrPermMap (proj2 (memcompat2 i cnti2)))
        ; INJ_lock_content:
            forall b b' delt rmap,
              j b = Some (b', delt) ->
              forall ofs, lockRes cstate1 (b, intval ofs) = Some rmap ->
                     lockRes cstate2 (b', intval (add ofs (repr delt))) =
                     Some (virtueLP_inject m2 j rmap)
        ; taret_invariant: invariant cstate2
        ; mtch_source:
            forall (i:nat),
              (i > hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_source j
                                    (getThreadC cnti1)
                                    (restrPermMap (proj1 (memcompat1 i cnti1)))
                                    (getThreadC cnti2)
                                    (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; mtch_target:
            forall (i:nat),
              (i < hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_target  j
                                     (getThreadC cnti1)
                                     (restrPermMap (proj1(memcompat1 i cnti1)))
                                     (getThreadC cnti2)
                                     (restrPermMap (proj1(memcompat2 i cnti2)))
        ; mtch_compiled:
            forall (i:nat),
              (i = hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
              exists cd, ocd = Some cd /\
                    match_thread_compiled cd j
                                          (getThreadC cnti1)
                                          (restrPermMap (proj1 (memcompat1 i cnti1)))
                                          (getThreadC cnti2)
                                          (restrPermMap (proj1 (memcompat2 i cnti2))) }.Record concur_match (ocd: option compiler_index)
           (j:meminj) (cstate1: ThreadPool (Some hb)) (m1: Mem.mem) (cstate2: ThreadPool(Some (S hb))) (m2: mem):=
      { same_length: num_threads cstate1 = num_threads cstate2
        ; memcompat1: mem_compatible cstate1 m1
        ; memcompat2: mem_compatible cstate2 m2
        ; INJ: Mem.inject j m1 m2
        ; INJ_threads:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj1 (memcompat1 i cnti1)))
                         (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; INJ_locks:
            forall i (cnti1: containsThread cstate1 i) (cnti2: containsThread cstate2 i),
              Mem.inject j
                         (restrPermMap (proj2 (memcompat1 i cnti1)))
                         (restrPermMap (proj2 (memcompat2 i cnti2)))
        ; INJ_lock_content:
            forall b b' delt rmap,
              j b = Some (b', delt) ->
              forall ofs, lockRes cstate1 (b, intval ofs) = Some rmap ->
                     lockRes cstate2 (b', intval (add ofs (repr delt))) =
                     Some (virtueLP_inject m2 j rmap)
        ; taret_invariant: invariant cstate2
        ; mtch_source:
            forall (i:nat),
              (i > hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_source j
                                    (getThreadC cnti1)
                                    (restrPermMap (proj1 (memcompat1 i cnti1)))
                                    (getThreadC cnti2)
                                    (restrPermMap (proj1 (memcompat2 i cnti2)))
        ; mtch_target:
            forall (i:nat),
              (i < hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
                match_thread_target  j
                                     (getThreadC cnti1)
                                     (restrPermMap (proj1(memcompat1 i cnti1)))
                                     (getThreadC cnti2)
                                     (restrPermMap (proj1(memcompat2 i cnti2)))
        ; mtch_compiled:
            forall (i:nat),
              (i = hb)%nat ->
              forall (cnti1: containsThread cstate1 i)
                (cnti2: containsThread cstate2 i),
              exists cd, ocd = Some cd /\
                    match_thread_compiled cd j
                                          (getThreadC cnti1)
                                          (restrPermMap (proj1 (memcompat1 i cnti1)))
                                          (getThreadC cnti2)
                                          (restrPermMap (proj1 (memcompat2 i cnti2))) }.Ltac forget_memcompat1:=
      match goal with
      | [ H: context[memcompat1 ?CM] |- _ ] =>
        let HH:= fresh "HH" in
        let Hcmpt:= fresh "Hcmpt" in
        remember (memcompat1 CM) as Hcmpt eqn:HH; clear HH 
      | [ |-  context[memcompat1 ?CM] ] =>
        let HH:= fresh "HH" in
        let Hcmpt:= fresh "Hcmpt" in
        remember (memcompat1 CM) as Hcmpt eqn:HH; clear HH 
      end.Ltac forget_memcompat2:=
      match goal with
      | [ H: context[memcompat2 ?CM] |- _ ] =>
        let HH:= fresh "HH" in
        let Hcmpt:= fresh "Hcmpt" in
        remember (memcompat2 CM) as Hcmpt eqn:HH; clear HH
      | [  |- context[memcompat2 ?CM] ] =>
        let HH:= fresh "HH" in
        let Hcmpt:= fresh "Hcmpt" in
        remember (memcompat2 CM) as Hcmpt eqn:HH; clear HH 
      end.Ltac consolidate_mem_compatible:=
      repeat match goal with
             | [ H1: mem_compatible ?st ?m,
                     H2: mem_compatible ?st ?m |- _ ] =>
               replace H2 with H1 in * by ( apply Axioms.proof_irr); clear H2
             end.Ltac clean_cmpt:=
      try forget_memcompat1;
      try forget_memcompat2;
      consolidate_mem_compatible.Ltac clean_cmpt':=
      match goal with
      | [ CMatch: concur_match _ _ _ _ _ _,
                  Hcmpt:mem_compatible ?st ?m |- _ ] =>
        repeat(
            match goal with
            | [   |- context[Hcmpt] ] =>
              replace Hcmpt with (memcompat1 CMatch)
                by apply Axioms.proof_irr
            | [ HH:context[Hcmpt]  |- _ ] =>
              replace Hcmpt with (memcompat1 CMatch) in HH
                by apply Axioms.proof_irr
            end)
      end.

Lemma contains21: forall {data j cstate1 m1 cstate2 m2}, concur_match data j cstate1 m1 cstate2 m2 -> forall {i:nat} (cnti1: containsThread cstate2 i), containsThread cstate1 i.