Debugging AppVeyor test failure [DO NOT MERGE]

Author: romainbrenguier

regression/jbmc-strings/StringEquals/test.desc

@@ -1,6 +1,6 @@
 CORE
 Test.class
---refine-strings --string-max-length 100 --function Test.check
+--refine-strings --string-max-length 100 --function Test.check --verbosity 10
 ^EXIT=10$
 ^SIGNAL=0$
 assertion at file Test.java line 6 .* SUCCESS