Add tests for annotations also for context

Author: michael-schwarz

tests/regression/02-base/67-no-int-context-option.c

@@ -0,0 +1,15 @@
+// PARAM: --enable ana.int.interval --disable ana.context.widen --enable ana.base.context.int --set annotation.goblint_context.base.no-int[+] f
+#include <assert.h>
+
+int f(int x) {
+  if (x)
+    return f(x+1);
+  else
+    return x;
+}
+
+int main () {
+  int a = f(1);
+  assert(!a);
+  return 0;
+}

tests/regression/02-base/68-int-context-option.c

@@ -0,0 +1,15 @@
+// PARAM: --enable ana.int.interval --disable ana.context.widen --disable ana.base.context.int --set annotation.goblint_context.base.int[+] f
+#include <assert.h>
+
+int f(int x) {
+  if (x)
+    return x * f(x - 1);
+  else
+    return 1;
+}
+
+int main () {
+  int a = f(10);
+  assert(a == 3628800);
+  return 0;
+}