diff --git a/scripts/smtbmc/mulcmp.sh b/scripts/smtbmc/mulcmp.sh
index b232ac9..586d72a 100644
--- a/scripts/smtbmc/mulcmp.sh
+++ b/scripts/smtbmc/mulcmp.sh
@@ -6,7 +6,7 @@ yosys -ql mulcmp.yslog \
         -p 'read_verilog -formal -norestrict -assume-asserts ../../picorv32.v' \
         -p 'read_verilog -formal mulcmp.v' \
 	-p 'prep -top testbench -nordff' \
-	-p 'write_smt2 -mem -bv -wires mulcmp.smt2'
+	-p 'write_smt2 -wires mulcmp.smt2'
 
 yosys-smtbmc -s yices -t 100 --dump-vcd output.vcd --dump-smtc output.smtc mulcmp.smt2
 
diff --git a/scripts/smtbmc/notrap_validop.sh b/scripts/smtbmc/notrap_validop.sh
index 10a7ca5..95e0f92 100644
--- a/scripts/smtbmc/notrap_validop.sh
+++ b/scripts/smtbmc/notrap_validop.sh
@@ -6,8 +6,8 @@ yosys -ql notrap_validop.yslog \
         -p 'read_verilog -formal -norestrict -assume-asserts ../../picorv32.v' \
         -p 'read_verilog -formal notrap_validop.v' \
 	-p 'prep -top testbench -nordff' \
-	-p 'write_smt2 -mem -bv -wires notrap_validop.smt2'
+	-p 'write_smt2 -wires notrap_validop.smt2'
 
-#yosys-smtbmc -s yices -t 50 --dump-vcd output.vcd --dump-smtc output.smtc notrap_validop.smt2
-yosys-smtbmc -s yices -i -t 27 --dump-vcd output.vcd --dump-smtc output.smtc notrap_validop.smt2
+yosys-smtbmc -s yices -t 30 --dump-vcd output.vcd --dump-smtc output.smtc notrap_validop.smt2
+yosys-smtbmc -s yices -i -t 30 --dump-vcd output.vcd --dump-smtc output.smtc notrap_validop.smt2
 
diff --git a/scripts/smtbmc/tracecmp.sh b/scripts/smtbmc/tracecmp.sh
index 6f471bd..449af52 100644
--- a/scripts/smtbmc/tracecmp.sh
+++ b/scripts/smtbmc/tracecmp.sh
@@ -6,7 +6,7 @@ yosys -ql tracecmp.yslog \
         -p 'read_verilog -formal -norestrict -assume-asserts ../../picorv32.v' \
         -p 'read_verilog -formal tracecmp.v' \
 	-p 'prep -top testbench -nordff' \
-	-p 'write_smt2 -mem -bv -wires tracecmp.smt2'
+	-p 'write_smt2 -wires tracecmp.smt2'
 
 yosys-smtbmc -s yices --smtc tracecmp.smtc --dump-vcd output.vcd --dump-smtc output.smtc tracecmp.smt2