More tests without properties

Used `sby --autotune` to find other engines which fail (though there aren't any other exceptions that I could find).
Parse errors from `abc bmc3` and `abc sim3` instead of returning UNKNOWN.

tests/unsorted/no_props.sby

@@ -1,13 +1,26 @@
 [tasks]
-abc
-abc_keepgoing
+abc prove
+abc_keepgoing prove
+
+# "Error: Does not work for combinational networks."
+abc_bmc3 bmc error
+# "Error: Only works for sequential networks."
+abc_sim3 bmc error
+# "Property index 0 is greater than the number of properties in file model/design_btor_single.btor (0)"
+btor_pono bmc error
 
 [options]
-mode prove
+prove: mode prove
+bmc: mode bmc
+cover: mode cover
+error: expect ERROR
 
 [engines]
 abc: abc pdr
 abc_keepgoing: abc --keep-going pdr
+btor_pono: btor pono
+abc_bmc3: abc bmc3
+abc_sim3: abc sim3
 
 [script]
 read -sv test.sv