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flash_buggy.cub
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flash_buggy.cub
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(**************************************************************************)
(* FLASH protocol without data (buggy version) *)
(**************************************************************************)
(* Run cubicle with options: -brab 2 -forward-depth 5 *)
(* *)
(* Translated from murphi models used in *)
(* *)
(* Ching-Tsun Chou, Phanindra K. Mannava, Seungjoon Park: A Simple Method *)
(* for Parameterized Verification of Cache Coherence Protocols. FMCAD *)
(* 2004: 382-398 *)
(* *)
(* and *)
(* *)
(* Murali Talupur and Mark R. Tuttle. 2008. Going with the flow: *)
(* parameterized verification using message flows. In Proceedings of the *)
(* 2008 International Conference on Formal Methods in Computer-Aided *)
(* Design (FMCAD '08), Alessandro Cimatti and Robert B. Jones *)
(* (Eds.). IEEE Press, Piscataway, NJ, USA, , Article 10 , 8 pages. *)
(**************************************************************************)
type cache_state = CACHE_I | CACHE_S | CACHE_E
type node_cmd = NODE_None | NODE_Get | NODE_GetX
type uni_cmd = UNI_None | UNI_Get | UNI_GetX | UNI_Put | UNI_PutX | UNI_Nak
type inv_cmd = INV_None | INV_Inv | INV_InvAck
type rp_cmd = RP_None | RP_Replace
type wb_cmd = WB_None | WB_Wb
type shwb_cmd = SHWB_None | SHWB_ShWb | SHWB_FAck
type nakc_cmd = NAKC_None | NAKC_Nakc
(*---------------------------- Home process -----------------------------*)
var Home : proc
var ProcCmd_home : node_cmd
var InvMarked_home : bool
var CacheState_home : cache_state
var UniMsg_Cmd_home : uni_cmd
var UniMsg_Proc_home : proc
var InvMsg_Cmd_home : inv_cmd
var RpMsg_Cmd_home : rp_cmd
(*------------------------------ Processes ------------------------------*)
array ProcCmd[proc] : node_cmd
array InvMarked[proc] : bool
array CacheState[proc] : cache_state
(*------------------------------ Directory ------------------------------*)
var Dir_Pending : bool
var Dir_Local : bool
var Dir_Dirty : bool
var Dir_HeadVld : bool
var Dir_HeadPtr : proc
var Dir_ShrVld : bool
array Dir_ShrSet[proc] : bool
array Dir_InvSet[proc] : bool
var Dir_ShrSet_home : bool
var Dir_InvSet_home : bool
(*------------------------------- Memory --------------------------------*)
(*------------------------------- Network -------------------------------*)
array UniMsg_Cmd[proc] : uni_cmd
array UniMsg_Proc[proc] : proc
array InvMsg_Cmd[proc] : inv_cmd
array RpMsg_Cmd[proc] : rp_cmd
var WbMsg_Cmd : wb_cmd
var WbMsg_Proc : proc
var ShWbMsg_Cmd : shwb_cmd
var ShWbMsg_Proc : proc
var NakcMsg_Cmd : nakc_cmd
(*-------------------------- Auxiliary variables ------------------------*)
var Collecting : bool
(*-----------------------------------------------------------------------*)
(*---------------------------- Initial states ---------------------------*)
init (p) {
Home <> p &&
Dir_Pending = False &&
Dir_Local = False &&
Dir_Dirty = False &&
Dir_HeadVld = False &&
Dir_ShrVld = False &&
WbMsg_Cmd = WB_None &&
ShWbMsg_Cmd = SHWB_None &&
NakcMsg_Cmd = NAKC_None &&
ProcCmd[p] = NODE_None &&
InvMarked[p] = False &&
CacheState[p] = CACHE_I &&
Dir_ShrSet[p] = False &&
Dir_InvSet[p] = False &&
UniMsg_Cmd[p] = UNI_None &&
InvMsg_Cmd[p] = INV_None &&
RpMsg_Cmd[p] = RP_None &&
ProcCmd_home = NODE_None &&
InvMarked_home = False &&
CacheState_home = CACHE_I &&
Dir_ShrSet_home = False &&
Dir_InvSet_home = False &&
UniMsg_Cmd_home = UNI_None &&
InvMsg_Cmd_home = INV_None &&
RpMsg_Cmd_home = RP_None &&
Collecting = False
}
(*-----------------------------------------------------------------------*)
(*-------------------------- Control property ---------------------------*)
unsafe (p) { CacheState_home = CACHE_E && CacheState[p] = CACHE_E }
unsafe (i j) { CacheState[i] = CACHE_E && CacheState[j] = CACHE_E }
(*-----------------------------------------------------------------------*)
(* Invariants discovered by backforth *)
(* unsafe () { CacheState_home = CACHE_I && *)
(* Dir_Local = True && *)
(* Dir_Dirty = True } *)
(* unsafe (z1) { Dir_HeadVld = False && *)
(* UniMsg_Cmd[z1] = UNI_PutX } *)
(* unsafe () { ProcCmd_home = NODE_Get && *)
(* Dir_Local = True } *)
(* unsafe () { CacheState_home = CACHE_E && *)
(* Dir_Dirty = False } *)
(* unsafe (z1) { Dir_HeadVld = False && *)
(* CacheState[z1] = CACHE_E } *)
(* unsafe () { WbMsg_Cmd = WB_Wb && *)
(* ShWbMsg_Cmd = SHWB_ShWb } *)
(* unsafe () { UniMsg_Cmd_home = UNI_Put && *)
(* ShWbMsg_Cmd = SHWB_ShWb } *)
(* unsafe () { UniMsg_Cmd_home = UNI_PutX && *)
(* ShWbMsg_Cmd = SHWB_ShWb } *)
(* unsafe () { Dir_Dirty = False && *)
(* ShWbMsg_Cmd = SHWB_ShWb } *)
(* unsafe () { Dir_HeadVld = False && *)
(* ShWbMsg_Cmd = SHWB_ShWb } *)
(* unsafe () { Dir_Dirty = False && *)
(* WbMsg_Cmd = WB_Wb } *)
(* unsafe () { Dir_HeadVld = False && *)
(* WbMsg_Cmd = WB_Wb } *)
(* unsafe () { UniMsg_Cmd_home = UNI_Put && *)
(* Dir_Dirty = False } *)
(* unsafe () { UniMsg_Cmd_home = UNI_Put && *)
(* Dir_HeadVld = False } *)
(* unsafe (z1) { CacheState[z1] = CACHE_E && *)
(* UniMsg_Cmd[z1] = UNI_PutX } *)
(* unsafe () { UniMsg_Cmd_home = UNI_PutX && *)
(* Dir_Dirty = False } *)
(* unsafe () { UniMsg_Cmd_home = UNI_PutX && *)
(* Dir_HeadVld = False } *)
(* unsafe (z1) { ShWbMsg_Cmd = SHWB_ShWb && *)
(* UniMsg_Cmd[z1] = UNI_PutX } *)
(* unsafe (z1) { UniMsg_Cmd_home = UNI_Put && *)
(* UniMsg_Cmd[z1] = UNI_PutX } *)
(* unsafe (z1 z2) { UniMsg_Cmd[z1] = UNI_PutX && *)
(* UniMsg_Cmd[z2] = UNI_PutX } *)
(* unsafe () { CacheState_home = CACHE_E && *)
(* Dir_HeadVld = True } *)
(* unsafe (z1) { UniMsg_Cmd_home = UNI_PutX && *)
(* UniMsg_Cmd[z1] = UNI_PutX } *)
(* unsafe (z1) { ShWbMsg_Cmd = SHWB_ShWb && *)
(* CacheState[z1] = CACHE_E } *)
(* unsafe (z1) { Dir_Dirty = False && *)
(* UniMsg_Cmd[z1] = UNI_PutX } *)
(* unsafe (z1) { UniMsg_Cmd_home = UNI_Put && *)
(* CacheState[z1] = CACHE_E } *)
(* unsafe () { InvMarked_home = True } *)
(* unsafe (z1 z2) { CacheState[z2] = CACHE_E && *)
(* UniMsg_Cmd[z1] = UNI_PutX } *)
(* unsafe (z1) { CacheState_home = CACHE_E && *)
(* UniMsg_Cmd[z1] = UNI_PutX } *)
(* unsafe (z1) { Dir_Dirty = False && *)
(* CacheState[z1] = CACHE_E } *)
(*----------------------- Muphi rule PI_Remote_Get ----------------------*)
transition pi_Remote_Get (src)
requires { Home <> src &&
ProcCmd[src] = NODE_None &&
CacheState[src] = CACHE_I }
{
ProcCmd[src] := NODE_Get;
UniMsg_Cmd[src] := UNI_Get;
UniMsg_Proc[src] := Home;
}
(*--------------------- Muphi rule PI_Local_Get_Get ---------------------*)
transition pi_Local_Get_Get ()
requires { ProcCmd_home = NODE_None &&
CacheState_home = CACHE_I &&
Dir_Pending = False && Dir_Dirty = True }
{
ProcCmd_home := NODE_Get;
Dir_Pending := True;
UniMsg_Cmd_home := UNI_Get;
UniMsg_Proc_home := Dir_HeadPtr;
Collecting := False;
}
(*--------------------- Muphi rule PI_Local_Get_Put ---------------------*)
transition pi_Local_Get_Put_InvM ()
requires { ProcCmd_home = NODE_None &&
CacheState_home = CACHE_I &&
Dir_Pending = False && Dir_Dirty = False &&
InvMarked_home = True }
{
Dir_Local := True;
ProcCmd_home := NODE_None;
InvMarked_home := False;
CacheState_home := CACHE_I;
}
transition pi_Local_Get_Put ()
requires { ProcCmd_home = NODE_None &&
CacheState_home = CACHE_I &&
Dir_Pending = False && Dir_Dirty = False &&
InvMarked_home = False }
{
Dir_Local := True;
ProcCmd_home := NODE_None;
CacheState_home := CACHE_S;
}
(*---------------------- Muphi rule PI_Remote_GetX ----------------------*)
transition pi_Remote_GetX (src)
requires { Home <> src &&
ProcCmd[src] = NODE_None &&
CacheState[src] = CACHE_I }
{
ProcCmd[src] := NODE_GetX;
UniMsg_Cmd[src] := UNI_GetX;
UniMsg_Proc[src] := Home;
}
(*-------------------- Muphi rule PI_Local_GetX_GetX --------------------*)
transition pi_Local_GetX_GetX ()
requires { ProcCmd_home = NODE_None &&
CacheState_home <> CACHE_E &&
Dir_Pending = False && Dir_Dirty = True }
{
ProcCmd_home := NODE_GetX;
Dir_Pending := True;
UniMsg_Cmd_home := UNI_GetX;
UniMsg_Proc_home := Dir_HeadPtr;
Collecting := False;
}
(*-------------------- Muphi rule PI_Local_GetX_PutX --------------------*)
transition pi_Local_GetX_PutX_HeadVld ()
requires { ProcCmd_home = NODE_None &&
CacheState_home <> CACHE_E &&
Dir_Pending = False && Dir_Dirty = False &&
Dir_HeadVld = True }
{
Dir_Local := True;
Dir_Dirty := True;
Dir_Pending := True;
Dir_HeadVld := False;
Dir_ShrVld := False;
Dir_ShrSet_home := False;
Dir_ShrSet[p] := case | _ : False;
Dir_InvSet_home := False;
Dir_InvSet[p] := case
| Dir_HeadPtr = p : True
| Dir_ShrVld = True && Dir_ShrSet[p] = True : True
| _ : False;
InvMsg_Cmd_home := INV_None;
InvMsg_Cmd[p] := case
| Dir_HeadPtr = p : INV_Inv
| Dir_ShrVld = True && Dir_ShrSet[p] = True : INV_Inv
| _ : INV_None;
Collecting := True;
ProcCmd_home := NODE_None;
InvMarked_home := False;
CacheState_home := CACHE_E;
}
transition pi_Local_GetX_PutX ()
requires { ProcCmd_home = NODE_None &&
CacheState_home <> CACHE_E &&
Dir_Pending = False && Dir_Dirty = False &&
Dir_HeadVld = False }
{
Dir_Local := True;
Dir_Dirty := True;
ProcCmd_home := NODE_None;
InvMarked_home := False;
CacheState_home := CACHE_E;
}
(*---------------------- Muphi rule PI_Remote_PutX ----------------------*)
transition pi_Remote_PutX (dst)
requires { Home <> dst &&
ProcCmd[dst] = NODE_None &&
CacheState[dst] = CACHE_E }
{
CacheState[dst] := CACHE_I;
WbMsg_Cmd := WB_Wb;
WbMsg_Proc := dst;
}
(*---------------------- Muphi rule PI_Local_PutX -----------------------*)
transition pi_Local_PutX_pending ()
requires { ProcCmd_home = NODE_None &&
CacheState_home = CACHE_E &&
Dir_Pending = True }
{
CacheState_home := CACHE_I;
Dir_Dirty := False;
}
transition pi_Local_PutX ()
requires { ProcCmd_home = NODE_None &&
CacheState_home = CACHE_E &&
Dir_Pending = False }
{
CacheState_home := CACHE_I;
Dir_Local := False;
Dir_Dirty := False;
}
(*-------------------- Muphi rule PI_Remote_Replace ---------------------*)
transition pi_Remote_Replace (src)
requires { Home <> src &&
ProcCmd[src] = NODE_None &&
CacheState[src] = CACHE_S }
{
CacheState[src] := CACHE_I;
RpMsg_Cmd[src] := RP_Replace;
}
(*--------------------- Muphi rule PI_Local_Replace ---------------------*)
transition pi_Local_Replace ()
requires { ProcCmd_home = NODE_None &&
CacheState_home = CACHE_S }
{
Dir_Local := False;
CacheState_home := CACHE_I;
}
(*-------------------------- Muphi rule NI_Nak --------------------------*)
transition ni_Nak (dst)
requires { UniMsg_Cmd[dst] = UNI_Nak }
{
UniMsg_Cmd[dst] := UNI_None;
ProcCmd[dst] := NODE_None;
InvMarked[dst] := False;
}
transition ni_Nak_home ()
requires { UniMsg_Cmd_home = UNI_Nak }
{
UniMsg_Cmd_home := UNI_None;
ProcCmd_home := NODE_None;
InvMarked_home := False;
}
(*----------------------- Muphi rule NI_Nak_Clear -----------------------*)
transition ni_Nak_Clear ()
requires { NakcMsg_Cmd = NAKC_Nakc }
{
NakcMsg_Cmd := NAKC_None;
Dir_Pending := False;
}
(*--------------------- Muphi rule NI_Local_Get_Nak ---------------------*)
transition ni_Local_Get_Nak1 (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_Get &&
UniMsg_Proc[src] = Home &&
RpMsg_Cmd[src] <> RP_Replace &&
Dir_Pending = True }
{
UniMsg_Cmd[src] := UNI_Nak;
UniMsg_Proc[src] := Home;
}
transition ni_Local_Get_Nak (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_Get &&
UniMsg_Proc[src] = Home &&
RpMsg_Cmd[src] <> RP_Replace &&
Dir_Dirty = True && Dir_Local = True &&
CacheState_home <> CACHE_E }
{
UniMsg_Cmd[src] := UNI_Nak;
UniMsg_Proc[src] := Home;
}
transition ni_Local_Get_Nak (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_Get &&
UniMsg_Proc[src] = Home &&
RpMsg_Cmd[src] <> RP_Replace &&
Dir_Dirty = True && Dir_Local = False &&
Dir_HeadPtr = src }
{
UniMsg_Cmd[src] := UNI_Nak;
UniMsg_Proc[src] := Home;
}
(*--------------------- Muphi rule NI_Local_Get_Get ---------------------*)
transition ni_Local_Get_Get (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_Get &&
UniMsg_Proc[src] = Home &&
RpMsg_Cmd[src] <> RP_Replace &&
Dir_Pending = False &&
Dir_Dirty = True &&
Dir_Local = False &&
Dir_HeadPtr <> src }
{
Dir_Pending := True;
UniMsg_Cmd[src] := UNI_Get;
UniMsg_Proc[src] := Dir_HeadPtr;
Collecting := False;
}
(*--------------------- Muphi rule NI_Local_Get_Put ---------------------*)
transition ni_Local_Get_Put1_Head (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_Get &&
UniMsg_Proc[src] = Home &&
RpMsg_Cmd[src] <> RP_Replace &&
Dir_Pending = False &&
Dir_Dirty = False &&
Dir_HeadVld = True }
{
Dir_ShrVld := True;
Dir_ShrSet[src] := True;
Dir_InvSet_home := Dir_ShrSet_home;
Dir_InvSet[p] := case
| p = src : True
| _ : Dir_ShrSet[p];
UniMsg_Cmd[src] := UNI_Put;
UniMsg_Proc[src] := Home;
}
transition ni_Local_Get_Put1 (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_Get &&
UniMsg_Proc[src] = Home &&
RpMsg_Cmd[src] <> RP_Replace &&
Dir_Pending = False &&
Dir_Dirty = False &&
Dir_HeadVld = False }
{
Dir_HeadVld := True;
Dir_HeadPtr := src;
UniMsg_Cmd[src] := UNI_Put;
UniMsg_Proc[src] := Home;
}
transition ni_Local_Get_Put2_dirty (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_Get &&
UniMsg_Proc[src] = Home &&
RpMsg_Cmd[src] <> RP_Replace &&
Dir_Pending = False &&
Dir_Dirty = True &&
Dir_Local = True && CacheState_home = CACHE_E }
{
Dir_Dirty := False;
Dir_HeadVld := True;
Dir_HeadPtr := src;
CacheState_home := CACHE_S;
UniMsg_Cmd[src] := UNI_Put;
UniMsg_Proc[src] := Home;
}
(*-------------------- Muphi rule NI_Remote_Get_Nak ---------------------*)
transition ni_Remote_Get_Nak (src dst)
requires { Home <> dst &&
UniMsg_Cmd[src] = UNI_Get &&
UniMsg_Proc[src] = dst &&
CacheState[dst] <> CACHE_E }
{
UniMsg_Cmd[src] := UNI_Nak;
UniMsg_Proc[src] := dst;
NakcMsg_Cmd := NAKC_Nakc;
}
(*-------------------- Muphi rule NI_Remote_Get_Put ---------------------*)
transition ni_Remote_Get_Put (src dst)
requires { Home <> dst && Home <> src &&
UniMsg_Cmd[src] = UNI_Get &&
UniMsg_Proc[src] = dst &&
CacheState[dst] = CACHE_E }
{
CacheState[dst] := CACHE_S;
UniMsg_Cmd[src] := UNI_Put;
UniMsg_Proc[src] := dst;
ShWbMsg_Cmd := SHWB_ShWb;
ShWbMsg_Proc := src;
}
transition ni_Remote_Get_Put_home (dst)
requires { Home <> dst &&
UniMsg_Cmd_home = UNI_Get &&
UniMsg_Proc_home = dst &&
CacheState[dst] = CACHE_E }
{
CacheState[dst] := CACHE_S;
UniMsg_Cmd_home := UNI_Put;
UniMsg_Proc_home := dst;
}
(*-------------------- Muphi rule NI_Local_GetX_Nak ---------------------*)
transition ni_Local_GetX_Nak1 (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_GetX &&
UniMsg_Proc[src] = Home &&
Dir_Pending = True }
{
UniMsg_Cmd[src] := UNI_Nak;
UniMsg_Proc[src] := Home;
}
transition ni_Local_GetX_Nak (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_GetX &&
UniMsg_Proc[src] = Home &&
Dir_Dirty = True && Dir_Local = True &&
CacheState_home <> CACHE_E }
{
UniMsg_Cmd[src] := UNI_Nak;
UniMsg_Proc[src] := Home;
}
transition ni_Local_GetX_Nak (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_GetX &&
UniMsg_Proc[src] = Home &&
Dir_Dirty = True && Dir_Local = False &&
Dir_HeadPtr = src }
{
UniMsg_Cmd[src] := UNI_Nak;
UniMsg_Proc[src] := Home;
}
(*------------------- Muphi rule NI_Local_GetX_GetX ---------------------*)
transition ni_Local_GetX_GetX (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_GetX &&
UniMsg_Proc[src] = Home &&
Dir_Pending = False &&
Dir_Dirty = True &&
Dir_Local = False &&
Dir_HeadPtr <> src }
{
Dir_Pending := True;
UniMsg_Cmd[src] := UNI_GetX;
UniMsg_Proc[src] := Dir_HeadPtr;
Collecting := False;
}
(*------------------- Muphi rule NI_Local_GetX_PutX ---------------------*)
transition ni_Local_GetX_PutX_1 (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_GetX &&
UniMsg_Proc[src] = Home &&
(* Dir_Pending = False && *)
(* Dir_Dirty = False && *)
(* Dir_HeadVld = False && *)
(* Dir_Local = True && *)
ProcCmd_home = NODE_Get }
{
Dir_Local := False;
Dir_Dirty := True;
Dir_HeadVld := True;
Dir_HeadPtr := src;
Dir_ShrVld := False;
Dir_ShrSet_home := False;
Dir_ShrSet[p] := case | _ : False;
Dir_InvSet_home := False;
Dir_InvSet[p] := case | _ : False;
UniMsg_Cmd[src] := UNI_PutX;
UniMsg_Proc[src] := Home;
CacheState_home := CACHE_I;
InvMarked_home := True;
}
transition ni_Local_GetX_PutX_2 (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_GetX &&
UniMsg_Proc[src] = Home &&
Dir_Pending = False &&
Dir_Dirty = False &&
Dir_HeadVld = False &&
Dir_Local = True &&
ProcCmd_home <> NODE_Get }
{
Dir_Local := False;
Dir_Dirty := True;
Dir_HeadVld := True;
Dir_HeadPtr := src;
Dir_ShrVld := False;
Dir_ShrSet_home := False;
Dir_ShrSet[p] := case | _ : False;
Dir_InvSet_home := False;
Dir_InvSet[p] := case | _ : False;
UniMsg_Cmd[src] := UNI_PutX;
UniMsg_Proc[src] := Home;
CacheState_home := CACHE_I;
}
transition ni_Local_GetX_PutX_3 (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_GetX &&
UniMsg_Proc[src] = Home &&
Dir_Pending = False &&
Dir_Dirty = False &&
Dir_HeadVld = False &&
Dir_Local = False }
{
Dir_Local := False;
Dir_Dirty := True;
Dir_HeadVld := True;
Dir_HeadPtr := src;
Dir_ShrVld := False;
Dir_ShrSet_home := False;
Dir_ShrSet[p] := case | _ : False;
Dir_InvSet_home := False;
Dir_InvSet[p] := case | _ : False;
UniMsg_Cmd[src] := UNI_PutX;
UniMsg_Proc[src] := Home;
CacheState_home := CACHE_I;
}
transition ni_Local_GetX_PutX_4 (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_GetX &&
UniMsg_Proc[src] = Home &&
Dir_Pending = False &&
Dir_Dirty = False &&
Dir_HeadPtr = src &&
Dir_Local = True &&
ProcCmd_home = NODE_Get &&
Dir_ShrSet_home = False &&
forall_other p. Dir_ShrSet[p] = False }
{
Dir_Local := False;
Dir_Dirty := True;
Dir_HeadVld := True;
Dir_HeadPtr := src;
Dir_ShrVld := False;
Dir_ShrSet_home := False;
Dir_ShrSet[p] := case | _ : False;
Dir_InvSet_home := False;
Dir_InvSet[p] := case | _ : False;
UniMsg_Cmd[src] := UNI_PutX;
UniMsg_Proc[src] := Home;
CacheState_home := CACHE_I;
InvMarked_home := True;
}
transition ni_Local_GetX_PutX_5 (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_GetX &&
UniMsg_Proc[src] = Home &&
Dir_Pending = False &&
Dir_Dirty = False &&
Dir_HeadPtr = src &&
Dir_Local = True &&
ProcCmd_home <> NODE_Get &&
Dir_ShrSet_home = False &&
forall_other p. Dir_ShrSet[p] = False }
{
Dir_Local := False;
Dir_Dirty := True;
Dir_HeadVld := True;
Dir_HeadPtr := src;
Dir_ShrVld := False;
Dir_ShrSet_home := False;
Dir_ShrSet[p] := case | _ : False;
Dir_InvSet_home := False;
Dir_InvSet[p] := case | _ : False;
UniMsg_Cmd[src] := UNI_PutX;
UniMsg_Proc[src] := Home;
CacheState_home := CACHE_I;
}
transition ni_Local_GetX_PutX_6 (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_GetX &&
UniMsg_Proc[src] = Home &&
Dir_Pending = False &&
Dir_Dirty = False &&
Dir_HeadPtr = src &&
Dir_Local = False &&
Dir_ShrSet_home = False &&
forall_other p. Dir_ShrSet[p] = False }
{
Dir_Local := False;
Dir_Dirty := True;
Dir_HeadVld := True;
Dir_HeadPtr := src;
Dir_ShrVld := False;
Dir_ShrSet_home := False;
Dir_ShrSet[p] := case | _ : False;
Dir_InvSet_home := False;
Dir_InvSet[p] := case | _ : False;
UniMsg_Cmd[src] := UNI_PutX;
UniMsg_Proc[src] := Home;
CacheState_home := CACHE_I;
}
transition ni_Local_GetX_PutX_7 (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_GetX &&
UniMsg_Proc[src] = Home &&
Dir_Pending = False &&
Dir_Dirty = False &&
Dir_HeadVld = True &&
Dir_HeadPtr <> src &&
Dir_Local = True &&
ProcCmd_home <> NODE_Get }
{
Dir_Pending := True;
Dir_Local := False;
Dir_Dirty := True;
Dir_HeadVld := True;
Dir_HeadPtr := src;
Dir_ShrVld := False;
Dir_ShrSet_home := False;
Dir_ShrSet[p] := case | _ : False;
Dir_InvSet_home := False;
Dir_InvSet[p] := case
| p = src : False
| Dir_ShrVld = True && Dir_ShrSet[p] = True : True
| Dir_HeadVld = True && Dir_HeadPtr = p : True
| _ : False;
InvMsg_Cmd_home := INV_None;
InvMsg_Cmd[p] := case
| p = src : INV_None
| Dir_ShrVld = True && Dir_ShrSet[p] = True : INV_Inv
| Dir_HeadVld = True && Dir_HeadPtr = p : INV_Inv
| _ : INV_None;
UniMsg_Cmd[src] := UNI_PutX;
UniMsg_Proc[src] := Home;
CacheState_home := CACHE_I;
Collecting := True;
}
transition ni_Local_GetX_PutX_8 (src pp)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_GetX &&
UniMsg_Proc[src] = Home &&
Dir_Pending = False &&
Dir_Dirty = False &&
Dir_HeadVld = True &&
Dir_HeadPtr = src &&
Dir_ShrSet[pp] = True &&
Dir_Local = True &&
ProcCmd_home <> NODE_Get }
{
Dir_Pending := True;
Dir_Local := False;
Dir_Dirty := True;
Dir_HeadVld := True;
Dir_HeadPtr := src;
Dir_ShrVld := False;
Dir_ShrSet_home := False;
Dir_ShrSet[p] := case | _ : False;
Dir_InvSet_home := False;
Dir_InvSet[p] := case
| p = src : False
| Dir_ShrVld = True && Dir_ShrSet[p] = True : True
| Dir_HeadVld = True && Dir_HeadPtr = p : True
| _ : False;
InvMsg_Cmd_home := INV_None;
InvMsg_Cmd[p] := case
| p = src : INV_None
| Dir_ShrVld = True && Dir_ShrSet[p] = True : INV_Inv
| Dir_HeadVld = True && Dir_HeadPtr = p : INV_Inv
| _ : INV_None;
UniMsg_Cmd[src] := UNI_PutX;
UniMsg_Proc[src] := Home;
CacheState_home := CACHE_I;
Collecting := True;
}
transition ni_Local_GetX_PutX_8_home (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_GetX &&
UniMsg_Proc[src] = Home &&
Dir_Pending = False &&
Dir_Dirty = False &&
Dir_HeadVld = True &&
Dir_HeadPtr = src &&
Dir_ShrSet_home = True &&
Dir_Local = True &&
ProcCmd_home <> NODE_Get }
{
Dir_Pending := True;
Dir_Local := False;
Dir_Dirty := True;
Dir_HeadVld := True;
Dir_HeadPtr := src;
Dir_ShrVld := False;
Dir_ShrSet_home := False;
Dir_ShrSet[p] := case | _ : False;
Dir_InvSet_home := False;
Dir_InvSet[p] := case
| p = src : False
| Dir_ShrVld = True && Dir_ShrSet[p] = True : True
| Dir_HeadVld = True && Dir_HeadPtr = p : True
| _ : False;
InvMsg_Cmd_home := INV_None;
InvMsg_Cmd[p] := case
| p = src : INV_None
| Dir_ShrVld = True && Dir_ShrSet[p] = True : INV_Inv
| Dir_HeadVld = True && Dir_HeadPtr = p : INV_Inv
| _ : INV_None;
UniMsg_Cmd[src] := UNI_PutX;
UniMsg_Proc[src] := Home;
CacheState_home := CACHE_I;
Collecting := True;
}
transition ni_Local_GetX_PutX_9 (src)
requires { Home <> src &&
UniMsg_Cmd[src] = UNI_GetX &&
UniMsg_Proc[src] = Home &&
Dir_Pending = False &&
Dir_Dirty = False &&
Dir_HeadVld = True &&
Dir_HeadPtr <> src &&
Dir_Local = False }
{
Dir_Pending := True;
Dir_Local := False;
Dir_Dirty := True;
Dir_HeadVld := True;
Dir_HeadPtr := src;
Dir_ShrVld := False;
Dir_ShrSet_home := False;
Dir_ShrSet[p] := case | _ : False;
Dir_InvSet_home := False;
Dir_InvSet[p] := case
| p = src : False
| Dir_ShrVld = True && Dir_ShrSet[p] = True : True
| Dir_HeadVld = True && Dir_HeadPtr = p : True
| _ : False;
InvMsg_Cmd_home := INV_None;
InvMsg_Cmd[p] := case
| p = src : INV_None