LiquidHaskell Version 0.8.6.0, Git revision 1d8c11324bb718eb3bd5c41643ba4b1cc377abf2 (dirty) [develop@1d8c11324bb718eb3bd5c41643ba4b1cc377abf2 (Thu Jul 11 14:48:47 2019 -0700)] 
Copyright 2013-19 Regents of the University of California. All Rights Reserved.

Targets: resources/custom/liquidhaskell/sandbox/1638557302_3147.hs
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**** [Checking: resources/custom/liquidhaskell/sandbox/1638557302_3147.hs] *****
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**** DONE:  A-Normalization ****************************************************
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**** DONE:  Extracted Core using GHC *******************************************
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**** DONE:  Transformed Core ***************************************************
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**** DONE:  annotate ***********************************************************
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**** RESULT: UNSAFE ************************************************************
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 /home/rjhala/research/stack/liquid/liquid-server/resources/custom/liquidhaskell/sandbox/1638557302_3147.hs:9:1-11: Error: Liquid Type Mismatch
  
 9 | notEven = 7
     ^^^^^^^^^^^
  
   Inferred type
     VV : {v : Int | v == 7}
  
   not a subtype of Required type
     VV : {VV : Int | VV mod 2 == 0}