SymbolicAddressMap { public void addStackUpto(SymbolicAddressMap in, int bound) { if(in == null) { throw new AssertionError("addStackUpto: caller map is undefined ?"); } if(this.isTop()) return; if(in.isTop()) { setTop(); return; } for(Entry<Location, BoundedSet<SymbolicAddress>> entry : in.mapP.entrySet()) { Location loc = entry.getKey(); if(! loc.isHeapLoc() && loc.stackLoc < bound) { mapP.put(loc, in.getStack(loc.stackLoc)); } } } SymbolicAddressMap(BoundedSetFactory<SymbolicAddress> bsFactory); private  SymbolicAddressMap(BoundedSetFactory<SymbolicAddress> bsFactory,
							   HashMap<Location,BoundedSet<SymbolicAddress>> initP,
							   HashMap<String,BoundedSet<SymbolicAddress>> initA); boolean isTop(); static SymbolicAddressMap top(); @Override int hashCode(); @Override boolean equals(Object obj); boolean isSubset(SymbolicAddressMap other); SymbolicAddressMap cloneFilterStack(int bound); SymbolicAddressMap cloneInvoke(int framePtr); void addStackUpto(SymbolicAddressMap in, int bound); void join(SymbolicAddressMap b); void joinReturned(SymbolicAddressMap returned, int framePtr); void copyStack(SymbolicAddressMap in, int dst, int src); BoundedSet<SymbolicAddress> getStack(int index); void putStack(int index, BoundedSet<SymbolicAddress> bs); BoundedSet<SymbolicAddress> getHeap(String staticfield); void putHeap(String staticfield, BoundedSet<SymbolicAddress> pointers); void put(Location l, BoundedSet<SymbolicAddress> bs); void addAlias(String ty, BoundedSet<SymbolicAddress> newAliases); BoundedSet<SymbolicAddress> getAliases(String fieldType); void print(PrintStream out, int indent); @Override String toString();  }
@Test public void testAddStackUpto() { SymbolicAddressMap m1 = map1(); SymbolicAddressMap m2 = map2(); SymbolicAddressMap top = SymbolicAddressMap.top(); SymbolicAddressMap m1a = m1.clone(); m1a.addStackUpto(m2, 0); assertEquals(m1,m1a); try { m1.addStackUpto(null, 0); fail("addStackUpto(undefined,..) should fail"); } catch(AssertionError _) {} try { top.addStackUpto(null, 0); fail("addStackUpto(undefined,..) should fail"); } catch(AssertionError _) {} m1.addStackUpto(top, 1); assertEquals(m1,top); }