diff options
| -rw-r--r-- | Test/civl/Program5.bpl | 167 |
1 files changed, 84 insertions, 83 deletions
diff --git a/Test/civl/Program5.bpl b/Test/civl/Program5.bpl index d728b845..362a6d9d 100644 --- a/Test/civl/Program5.bpl +++ b/Test/civl/Program5.bpl @@ -1,83 +1,84 @@ -// RUN: %boogie -noinfer -typeEncoding:m -useArrayTheory "%s" > "%t"
-// RUN: %diff "%s.expect" "%t"
-type Tid;
-const unique nil: Tid;
-
-function {:inline} UNALLOC():int { 0 }
-function {:inline} WHITE():int { 1 }
-function {:inline} GRAY():int { 2 }
-function {:inline} BLACK():int { 3 }
-function {:inline} Unalloc(i:int) returns(bool) { i <= 0 }
-function {:inline} White(i:int) returns(bool) { i == 1 }
-function {:inline} Gray(i:int) returns(bool) { i == 2 }
-function {:inline} Black(i:int) returns(bool) { i >= 3 }
-
-procedure {:yields} {:layer 2} YieldColorOnlyGetsDarker()
-ensures {:layer 2} Color >= old(Color);
-{
- yield;
- assert {:layer 2} Color >= old(Color);
-}
-
-procedure {:yields} {:layer 2,3} WriteBarrier({:linear "tid"} tid:Tid)
-ensures {:atomic} |{ A: assert tid != nil; goto B, C;
- B: assume White(Color); Color := GRAY(); return true;
- C: assume !White(Color); return true;}|;
-requires {:layer 2} Color >= WHITE();
-ensures {:layer 2} Color >= GRAY();
-{
- var colorLocal:int;
- yield;
- assert {:layer 2} Color >= WHITE();
- call colorLocal := GetColorNoLock();
- call YieldColorOnlyGetsDarker();
- if (White(colorLocal)) { call WriteBarrierSlow(tid); }
- yield;
- assert {:layer 2} Color >= GRAY();
-}
-
-procedure {:yields} {:layer 1,2} WriteBarrierSlow({:linear "tid"} tid:Tid)
-ensures {:atomic} |{ A: assert tid != nil; goto B, C;
- B: assume White(Color); Color := GRAY(); return true;
- C: assume !White(Color); return true; }|;
-{
- var colorLocal:int;
- yield;
- call AcquireLock(tid);
- call colorLocal := GetColorLocked(tid);
- if (White(colorLocal)) { call SetColorLocked(tid, GRAY()); }
- call ReleaseLock(tid);
- yield;
-}
-
-procedure {:yields} {:layer 0,1} AcquireLock({:linear "tid"} tid: Tid);
- ensures {:right} |{ A: assert tid != nil; assume lock == nil; lock := tid; return true; }|;
-
-procedure {:yields} {:layer 0,1} ReleaseLock({:linear "tid"} tid: Tid);
- ensures {:left} |{ A: assert tid != nil; assert lock == tid; lock := nil; return true; }|;
-
-procedure {:yields} {:layer 0,1} SetColorLocked({:linear "tid"} tid:Tid, newCol:int);
- ensures {:atomic} |{A: assert tid != nil; assert lock == tid; Color := newCol; return true;}|;
-
-procedure {:yields} {:layer 0,1} GetColorLocked({:linear "tid"} tid:Tid) returns (col:int);
- ensures {:both} |{A: assert tid != nil; assert lock == tid; col := Color; return true;}|;
-
-procedure {:yields} {:layer 0,2} GetColorNoLock() returns (col:int);
- ensures {:atomic} |{A: col := Color; return true;}|;
-
-
-
-function {:builtin "MapConst"} MapConstBool(bool): [Tid]bool;
-function {:builtin "MapOr"} MapOr([Tid]bool, [Tid]bool) : [Tid]bool;
-
-var {:layer 0} Color:int;
-var {:layer 0} lock:Tid;
-
-function {:inline} {:linear "tid"} TidCollector(x: Tid) : [Tid]bool
-{
- MapConstBool(false)[x := true]
-}
-function {:inline} {:linear "tid"} TidSetCollector(x: [Tid]bool) : [Tid]bool
-{
- x
-}
+// RUN: %boogie -noinfer -typeEncoding:m -useArrayTheory "%s" > "%t" +// RUN: %diff "%s.expect" "%t" +type Tid; +const unique nil: Tid; + +function {:inline} UNALLOC():int { 0 } +function {:inline} WHITE():int { 1 } +function {:inline} GRAY():int { 2 } +function {:inline} BLACK():int { 3 } +function {:inline} Unalloc(i:int) returns(bool) { i <= 0 } +function {:inline} White(i:int) returns(bool) { i == 1 } +function {:inline} WhiteOrLighter(i:int) returns(bool) { i <= 1 } +function {:inline} Gray(i:int) returns(bool) { i == 2 } +function {:inline} Black(i:int) returns(bool) { i >= 3 } + +procedure {:yields} {:layer 2} YieldColorOnlyGetsDarker() +ensures {:layer 2} Color >= old(Color); +{ + yield; + assert {:layer 2} Color >= old(Color); +} + +procedure {:yields} {:layer 2,3} WriteBarrier({:linear "tid"} tid:Tid) +ensures {:atomic} |{ A: assert tid != nil; goto B, C; + B: assume White(Color); Color := GRAY(); return true; + C: assume !White(Color); return true;}|; +requires {:layer 2} Color >= WHITE(); +ensures {:layer 2} Color >= GRAY(); +{ + var colorLocal:int; + yield; + assert {:layer 2} Color >= WHITE(); + call colorLocal := GetColorNoLock(); + call YieldColorOnlyGetsDarker(); + if (WhiteOrLighter(colorLocal)) { call WriteBarrierSlow(tid); } + yield; + assert {:layer 2} Color >= GRAY(); +} + +procedure {:yields} {:layer 1,2} WriteBarrierSlow({:linear "tid"} tid:Tid) +ensures {:atomic} |{ A: assert tid != nil; goto B, C; + B: assume WhiteOrLighter(Color); Color := GRAY(); return true; + C: assume !WhiteOrLighter(Color); return true; }|; +{ + var colorLocal:int; + yield; + call AcquireLock(tid); + call colorLocal := GetColorLocked(tid); + if (WhiteOrLighter(colorLocal)) { call SetColorLocked(tid, GRAY()); } + call ReleaseLock(tid); + yield; +} + +procedure {:yields} {:layer 0,1} AcquireLock({:linear "tid"} tid: Tid); + ensures {:right} |{ A: assert tid != nil; assume lock == nil; lock := tid; return true; }|; + +procedure {:yields} {:layer 0,1} ReleaseLock({:linear "tid"} tid: Tid); + ensures {:left} |{ A: assert tid != nil; assert lock == tid; lock := nil; return true; }|; + +procedure {:yields} {:layer 0,1} SetColorLocked({:linear "tid"} tid:Tid, newCol:int); + ensures {:atomic} |{A: assert tid != nil; assert lock == tid; Color := newCol; return true;}|; + +procedure {:yields} {:layer 0,1} GetColorLocked({:linear "tid"} tid:Tid) returns (col:int); + ensures {:both} |{A: assert tid != nil; assert lock == tid; col := Color; return true;}|; + +procedure {:yields} {:layer 0,2} GetColorNoLock() returns (col:int); + ensures {:atomic} |{A: col := Color; return true;}|; + + + +function {:builtin "MapConst"} MapConstBool(bool): [Tid]bool; +function {:builtin "MapOr"} MapOr([Tid]bool, [Tid]bool) : [Tid]bool; + +var {:layer 0} Color:int; +var {:layer 0} lock:Tid; + +function {:inline} {:linear "tid"} TidCollector(x: Tid) : [Tid]bool +{ + MapConstBool(false)[x := true] +} +function {:inline} {:linear "tid"} TidSetCollector(x: [Tid]bool) : [Tid]bool +{ + x +} |