Squashed commit of the following:

commit 4cdb99fb
Author: Mathias Preiner <mathias.preiner@gmail.com>
Date:   Tue May 15 19:44:07 2018 -0700

    Update status of unknown check-sat calls.
3 jobs for develop-2019
Status Job ID Name Coverage
  Build
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  Test
skipped #93
allowed to fail
code_quality
skipped #92
test
 
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