reftests: updates on init test #2825

Job	Run time
Analyse	5s
Cygwin	7s
Build-macOS (4.14.1)	2m 33s
Build-Linux (4.08.1)	1m 56s
Hygiene	24s
Test-macOS (4.14.1)	29m 14s
Build-Linux (4.09.1)	1m 49s
Build-Linux (4.10.2)	1m 45s
Build-Linux (4.11.2)	2m 7s
Build-Linux (4.12.1)	2m 0s
Build-Linux (4.13.1)	1m 57s
Build-Linux (5.0.0)	1m 50s
Build-Linux (5.1.1)	1m 49s
Build-Linux (4.14.1)	1m 49s
Build-Windows (x86_64-pc-cygwin, x86_64-pc-cygwin, 4.14.1)	37m 39s
Build-Windows (i686-w64-mingw32, x86_64-pc-cygwin, 4.14.1)	42m 42s
Build-Windows (x86_64-w64-mingw32, x86_64-pc-cygwin, 4.14.1)	45m 42s
Build-Windows (i686-pc-windows, x86_64-pc-cygwin, 4.14.1)	47m 4s
Build-Windows (x86_64-pc-windows, x86_64-pc-cygwin, 4.14.1)	48m 53s
Cold-Linux	5m 21s
Test-Linux (4.14.1)	13m 57s
Solvers-Linux (z3, 4.14.1)	59s
Upgrade-Linux (4.14.1)	1m 15s
Solvers-Linux (0install, 4.14.1)	1m 19s
Upgrade-macOS (4.14.1)	1m 43s
Solvers-macOS (z3, 4.14.1)	1m 22s
Solvers-macOS (0install, 4.14.1)	1m 43s
	4h 59m 4s

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