Bug fix for deterministExtractLoops for Shaobo's example

2 files changed, 29 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