Add second test case that features assume statement hidden behind

branch.

Author: NlightNFotis

regression/cbmc-cover/assume_assert2/assume_assert.c

@@ -0,0 +1,20 @@
+#include <assert.h>
+
+int main(int argc, char *argv[])
+{
+  int a;
+
+  if(a > 0)
+  {
+    assert(a > 0);
+  }
+  else if(a < 0)
+  {
+    __CPROVER_assume(a >= 0);
+    assert(a < 0);
+  }
+  else
+  {
+    assert(a == 0);
+  }
+}

regression/cbmc-cover/assume_assert2/test.desc

@@ -0,0 +1,9 @@
+CORE
+assume_assert.c
+--cover assume
+^EXIT=0$
+^SIGNAL=0$
+^\[main.coverage.1\] file assume_assert.c line \d+ function main assert\(false\) before assume\(a >= 0\): SATISFIED$
+^\[main.coverage.2\] file assume_assert.c line \d+ function main assert\(false\) after assume\(a >= 0\): FAILED$
+--
+^warning: ignoring