Add noverific task to test the non verific code

Mostly for CI to ensure fallback code still functions as intended.a
Also reverted the change in the grep command to 1 line after.

docs/examples/fifo/fifo.sby

@@ -2,6 +2,7 @@
 basic bmc
 nofullskip prove
 cover
+noverific cover
 basic cover : default
 
 [options]
@@ -20,6 +21,7 @@ smtbmc boolector
 
 [script]
 nofullskip: read -define NO_FULL_SKIP=1
+noverific: read -noverific
 read -formal fifo.sv
 prep -top fifo
 

docs/examples/fifo/fifo.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-python3 $SBY_MAIN -f fifo.sby
+python3 $SBY_MAIN -f fifo.sby basic cover noverific
 
 if [[ $? -ne 0 ]] ; then
     exit 1

docs/examples/fifo/golden/fifo.sby

@@ -2,6 +2,7 @@
 basic bmc
 nofullskip prove
 cover
+noverific cover
 bigtest cover
 
 [options]
@@ -23,6 +24,7 @@ smtbmc boolector
 
 [script]
 nofullskip: read -define NO_FULL_SKIP=1
+noverific: read -noverific
 read -formal fifo.sv
 bigtest: hierarchy -check -top fifo -chparam MAX_DATA 100 -chparam ADDR_BITS 7
 ~bigtest: hierarchy -check -top fifo -chparam MAX_DATA 5 -chparam ADDR_BITS 3