4 files changed, 71 insertions, 0 deletions
diff --git a/Test/extractloops/detLoopExtract2.bpl b/Test/extractloops/detLoopExtract2.bpl
new file mode 100644
index 00000000..f2befc53
--- /dev/null
+++ b/Test/extractloops/detLoopExtract2.bpl
@@ -0,0 +1,27 @@
+// RUN: %boogie -nologo -nologo -stratifiedInline:1 -extractLoops -deterministicExtractLoops -recursionBound:6  "%s" > "%t"
+// RUN: %diff "%s.expect" "%t"
+
+//This example checks the bug fix in the loop extract for http://symdiff.codeplex.com/workitem/4
+procedure {:entrypoint} Main() returns(r:int)
+{ 
+  var i, j : int;
+  var Flag : bool;
+  var b : bool;
+  i := 0;
+  j := 0;
+  Flag := false;
+  while(i<3)
+  {
+    havoc b;
+    if (b || Flag) {
+      i := i + 1;
+      j := j + 1; 
+    }
+    else {
+     Flag := true;
+     j := j + 1;
+    }
+  }
+  assume !(i == j || i == j - 1);
+  return;
+}
diff --git a/Test/extractloops/detLoopExtract2.bpl.expect b/Test/extractloops/detLoopExtract2.bpl.expect
new file mode 100644
index 00000000..37fad75c
--- /dev/null
+++ b/Test/extractloops/detLoopExtract2.bpl.expect
@@ -0,0 +1,2 @@
+
+Boogie program verifier finished with 1 verified, 0 errors
diff --git a/Test/extractloops/detLoopExtractNested.bpl b/Test/extractloops/detLoopExtractNested.bpl
new file mode 100644
index 00000000..65de20c1
--- /dev/null
+++ b/Test/extractloops/detLoopExtractNested.bpl
@@ -0,0 +1,23 @@
+// RUN: %boogie  -nologo -stratifiedInline:1 -extractLoops -deterministicExtractLoops -recursionBound:100  "%s" > "%t"
+// RUN: %diff "%s.expect" "%t"
+
+//This example checks the bug fix in the loop extract for http://symdiff.codeplex.com/workitem/1
+
+var t: int;
+procedure {:entrypoint} NestedLoops()
+modifies t;
+//ensures t == 6;
+{
+   var i:int, j:int;
+   i, j, t := 0, 0, 0;
+   while(i < 2) {
+     j := 0;
+     while (j < 3) {
+       t := t + 1;
+       j := j + 1;
+     }
+     i := i + 1;
+   }
+   assume true; //would be provable (!true) wihtout the fix
+}
+
diff --git a/Test/extractloops/detLoopExtractNested.bpl.expect b/Test/extractloops/detLoopExtractNested.bpl.expect
new file mode 100644
index 00000000..f4932ede
--- /dev/null
+++ b/Test/extractloops/detLoopExtractNested.bpl.expect
@@ -0,0 +1,19 @@
+(0,0): Error BP5001: This assertion might not hold.
+Execution trace:
+    detLoopExtractNested.bpl(12,12): anon0
+    detLoopExtractNested.bpl(14,8): anon5_LoopBody
+    detLoopExtractNested.bpl(16,10): anon6_LoopBody
+    detLoopExtractNested.bpl(16,10): anon6_LoopBody
+    detLoopExtractNested.bpl(16,10): anon6_LoopBody
+    detLoopExtractNested.bpl(15,6): anon6_LoopDone
+    detLoopExtractNested.bpl(15,6): anon6_LoopDone
+    detLoopExtractNested.bpl(14,8): anon5_LoopBody
+    detLoopExtractNested.bpl(16,10): anon6_LoopBody
+    detLoopExtractNested.bpl(16,10): anon6_LoopBody
+    detLoopExtractNested.bpl(16,10): anon6_LoopBody
+    detLoopExtractNested.bpl(15,6): anon6_LoopDone
+    detLoopExtractNested.bpl(15,6): anon6_LoopDone
+    detLoopExtractNested.bpl(13,4): anon5_LoopDone
+    detLoopExtractNested.bpl(13,4): anon5_LoopDone
+
+Boogie program verifier finished with 0 verified, 1 error