From 06aadffd71f2d96070703371c62bd0e14c76b91f Mon Sep 17 00:00:00 2001
From: wuestholz <unknown>
Date: Fri, 4 Jul 2014 03:52:02 +0200
Subject: Implemented an optimization for assignments to assumption variables
 that are injected by the verification result caching for calls within loops.

---
 Test/snapshots/Snapshots17.v0.bpl      | 32 ++++++++++++++++++++++++++++++++
 Test/snapshots/Snapshots17.v1.bpl      | 32 ++++++++++++++++++++++++++++++++
 Test/snapshots/Snapshots18.v0.bpl      | 24 ++++++++++++++++++++++++
 Test/snapshots/Snapshots18.v1.bpl      | 24 ++++++++++++++++++++++++
 Test/snapshots/runtest.snapshot        |  2 +-
 Test/snapshots/runtest.snapshot.expect | 31 +++++++++++++++++++++++++++++++
 6 files changed, 144 insertions(+), 1 deletion(-)
 create mode 100644 Test/snapshots/Snapshots17.v0.bpl
 create mode 100644 Test/snapshots/Snapshots17.v1.bpl
 create mode 100644 Test/snapshots/Snapshots18.v0.bpl
 create mode 100644 Test/snapshots/Snapshots18.v1.bpl

(limited to 'Test/snapshots')

diff --git a/Test/snapshots/Snapshots17.v0.bpl b/Test/snapshots/Snapshots17.v0.bpl
new file mode 100644
index 00000000..58ef53e7
--- /dev/null
+++ b/Test/snapshots/Snapshots17.v0.bpl
@@ -0,0 +1,32 @@
+procedure {:checksum "0"} M();
+
+implementation {:id "M"} {:checksum "1"} M()
+{
+    var x: int;
+
+    x := 0;
+    while (*)
+    {
+        while (*)
+        {
+            assert true;
+
+            call N();
+
+            call N();
+
+            x := x + 1;
+
+            assert x == 1;
+        }
+
+        call N();
+
+        assert false;
+    }
+
+    assert true;
+}
+
+procedure {:checksum "2"} N();
+  ensures false;
diff --git a/Test/snapshots/Snapshots17.v1.bpl b/Test/snapshots/Snapshots17.v1.bpl
new file mode 100644
index 00000000..4d22ab3d
--- /dev/null
+++ b/Test/snapshots/Snapshots17.v1.bpl
@@ -0,0 +1,32 @@
+procedure {:checksum "0"} M();
+
+implementation {:id "M"} {:checksum "1"} M()
+{
+    var x: int;
+
+    x := 0;
+    while (*)
+    {
+        while (*)
+        {
+            assert true;
+
+            call N();
+
+            call N();
+
+            x := x + 1;
+
+            assert x == 1;  // error
+        }
+
+        call N();
+
+        assert false;  // error
+    }
+
+    assert true;
+}
+
+procedure {:checksum "3"} N();
+  ensures true;
diff --git a/Test/snapshots/Snapshots18.v0.bpl b/Test/snapshots/Snapshots18.v0.bpl
new file mode 100644
index 00000000..d37d9546
--- /dev/null
+++ b/Test/snapshots/Snapshots18.v0.bpl
@@ -0,0 +1,24 @@
+procedure {:checksum "0"} M();
+
+implementation {:id "M"} {:checksum "1"} M()
+{
+    while (true)
+    {
+        assert 0 == 0;
+        
+        call N();
+        call N();
+
+        if (*)
+        {
+            break;
+        }
+
+        assert 1 != 1;
+    }
+
+    assert 2 != 2;
+}
+
+procedure {:checksum "2"} N();
+  ensures false;
diff --git a/Test/snapshots/Snapshots18.v1.bpl b/Test/snapshots/Snapshots18.v1.bpl
new file mode 100644
index 00000000..76f8c597
--- /dev/null
+++ b/Test/snapshots/Snapshots18.v1.bpl
@@ -0,0 +1,24 @@
+procedure {:checksum "0"} M();
+
+implementation {:id "M"} {:checksum "1"} M()
+{
+    while (true)
+    {
+        assert 0 == 0;
+        
+        call N();
+        call N();
+
+        if (*)
+        {
+            break;
+        }
+
+        assert 1 != 1;  // error
+    }
+
+    assert 2 != 2;  // error
+}
+
+procedure {:checksum "3"} N();
+  ensures true;
diff --git a/Test/snapshots/runtest.snapshot b/Test/snapshots/runtest.snapshot
index ffa54a53..e2d566d8 100644
--- a/Test/snapshots/runtest.snapshot
+++ b/Test/snapshots/runtest.snapshot
@@ -1,2 +1,2 @@
-// RUN: %boogie -verifySnapshots:2 -verifySeparately Snapshots0.bpl Snapshots1.bpl Snapshots2.bpl Snapshots3.bpl Snapshots4.bpl Snapshots5.bpl Snapshots6.bpl Snapshots7.bpl Snapshots8.bpl Snapshots9.bpl Snapshots10.bpl Snapshots11.bpl Snapshots12.bpl Snapshots13.bpl Snapshots14.bpl Snapshots15.bpl Snapshots16.bpl > "%t"
+// RUN: %boogie -verifySnapshots:2 -verifySeparately Snapshots0.bpl Snapshots1.bpl Snapshots2.bpl Snapshots3.bpl Snapshots4.bpl Snapshots5.bpl Snapshots6.bpl Snapshots7.bpl Snapshots8.bpl Snapshots9.bpl Snapshots10.bpl Snapshots11.bpl Snapshots12.bpl Snapshots13.bpl Snapshots14.bpl Snapshots15.bpl Snapshots16.bpl Snapshots17.bpl Snapshots18.bpl > "%t"
 // RUN: %diff "%s.expect" "%t"
diff --git a/Test/snapshots/runtest.snapshot.expect b/Test/snapshots/runtest.snapshot.expect
index 41193348..8b363791 100644
--- a/Test/snapshots/runtest.snapshot.expect
+++ b/Test/snapshots/runtest.snapshot.expect
@@ -149,3 +149,34 @@ Execution trace:
     Snapshots16.v1.bpl(14,5): anon0
 
 Boogie program verifier finished with 0 verified, 1 error
+
+Boogie program verifier finished with 1 verified, 0 errors
+Snapshots17.v1.bpl(20,13): Error BP5001: This assertion might not hold.
+Execution trace:
+    Snapshots17.v1.bpl(7,7): anon0
+    Snapshots17.v1.bpl(10,9): anon6_LoopHead
+    Snapshots17.v1.bpl(12,13): anon6_LoopBody
+Snapshots17.v1.bpl(25,9): Error BP5001: This assertion might not hold.
+Execution trace:
+    Snapshots17.v1.bpl(7,7): anon0
+    Snapshots17.v1.bpl(10,9): anon6_LoopHead
+    Snapshots17.v1.bpl(10,9): anon6_LoopDone
+
+Boogie program verifier finished with 0 verified, 2 errors
+
+Boogie program verifier finished with 1 verified, 0 errors
+Snapshots18.v1.bpl(17,9): Error BP5001: This assertion might not hold.
+Execution trace:
+    Snapshots18.v1.bpl(5,5): anon0
+    Snapshots18.v1.bpl(5,5): anon5_LoopHead
+    Snapshots18.v1.bpl(7,9): anon5_LoopBody
+    Snapshots18.v1.bpl(12,9): anon6_Else
+Snapshots18.v1.bpl(20,5): Error BP5001: This assertion might not hold.
+Execution trace:
+    Snapshots18.v1.bpl(5,5): anon0
+    Snapshots18.v1.bpl(5,5): anon5_LoopHead
+    Snapshots18.v1.bpl(7,9): anon5_LoopBody
+    Snapshots18.v1.bpl(14,13): anon6_Then
+    Snapshots18.v1.bpl(20,5): anon4
+
+Boogie program verifier finished with 0 verified, 2 errors
-- 
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