diff --git a/Makefile b/Makefile
index b7925fe17..dada0f7aa 100644
--- a/Makefile
+++ b/Makefile
@@ -558,6 +558,7 @@ ifeq ($(ENABLE_VERIFIC_SILIMATE_EXTENSIONS),1)
 CXXFLAGS += -DSILIMATE_VERIFIC_EXTENSIONS
 VERIFIC_SILIMATE_OBJS += $(VERIFIC_DIR)/database/DBSilimate.o
 VERIFIC_SILIMATE_OBJS += $(VERIFIC_DIR)/verilog/VeriSilimate.o
+VERIFIC_SILIMATE_OBJS += $(VERIFIC_DIR)/util/UtilSilimate.o
 endif
 ifeq ($(ENABLE_VERIFIC_YOSYSHQ_EXTENSIONS),1)
 VERIFIC_COMPONENTS += extensions
@@ -591,6 +592,9 @@ $(VERIFIC_DIR)/database/DBSilimate.o: $(VERIFIC_DIR)/database/DBSilimate.cpp
 $(VERIFIC_DIR)/verilog/VeriSilimate.o: $(VERIFIC_DIR)/verilog/VeriSilimate.cpp
 	$(P) $(CXX) -o $@ $(CPPFLAGS) $(CXXFLAGS) -c $<
 
+$(VERIFIC_DIR)/util/UtilSilimate.o: $(VERIFIC_DIR)/util/UtilSilimate.cpp
+	$(P) $(CXX) -o $@ $(CPPFLAGS) $(CXXFLAGS) -c $<
+
 ifeq ($(OS), Darwin)
 VERIFIC_LIB_OS_SUFFIX = mac
 
@@ -621,6 +625,18 @@ $(VERIFIC_DIR)/verilog/verilog-mac.a: $(VERIFIC_DIR)/verilog/verilog-mac.raw.a $
 	$(Q) ar rcs $@ $@_patch_tmp/*.o
 	$(Q) rm -rf $@_patch_tmp
 
+$(VERIFIC_DIR)/util/util-mac.a: $(VERIFIC_DIR)/util/util-mac.raw.a $(VERIFIC_DIR)/_override_syms.txt
+	$(Q) cp $< $@
+	$(Q) mkdir -p $@_patch_tmp
+	$(Q) cd $@_patch_tmp && ar x $(CURDIR)/$@ && \
+		for o in *.o; do \
+			nm -gjU "$$o" 2>/dev/null | grep -Fx -f $(CURDIR)/$(VERIFIC_DIR)/_override_syms.txt > "$$o.syms" 2>/dev/null; \
+			if [ -s "$$o.syms" ]; then nmedit -R "$$o.syms" "$$o"; fi; \
+			rm -f "$$o.syms"; \
+		done
+	$(Q) ar rcs $@ $@_patch_tmp/*.o
+	$(Q) rm -rf $@_patch_tmp
+
 else
 VERIFIC_LIB_OS_SUFFIX = linux
 LINKFLAGS += -Wl,--allow-multiple-definition
@@ -631,9 +647,15 @@ $(VERIFIC_DIR)/database/database-linux.a: $(VERIFIC_DIR)/database/database-linux
 $(VERIFIC_DIR)/verilog/verilog-linux.a: $(VERIFIC_DIR)/verilog/verilog-linux.raw.a
 	$(Q) cp $< $@
 
+$(VERIFIC_DIR)/util/util-linux.a: $(VERIFIC_DIR)/util/util-linux.raw.a
+	$(Q) cp $< $@
+
 endif
 
-VERIFIC_PATCHED_ARCHIVES = $(VERIFIC_DIR)/database/database-$(VERIFIC_LIB_OS_SUFFIX).a $(VERIFIC_DIR)/verilog/verilog-$(VERIFIC_LIB_OS_SUFFIX).a
+VERIFIC_PATCHED_ARCHIVES = \
+	$(VERIFIC_DIR)/database/database-$(VERIFIC_LIB_OS_SUFFIX).a \
+	$(VERIFIC_DIR)/verilog/verilog-$(VERIFIC_LIB_OS_SUFFIX).a \
+	$(VERIFIC_DIR)/util/util-$(VERIFIC_LIB_OS_SUFFIX).a
 
 endif # ENABLE_VERIFIC_SILIMATE_EXTENSIONS
 
diff --git a/frontends/verific/verific.cc b/frontends/verific/verific.cc
index 25f5928ff..a58842792 100644
--- a/frontends/verific/verific.cc
+++ b/frontends/verific/verific.cc
@@ -3223,9 +3223,6 @@ std::string verific_import(Design *design, const std::map<std::string,std::strin
 
 			log("    Running post-elaboration for %s.\n", it->first.c_str());
 			nl->PostElaborationProcess();
-
-			log("    Running operator optimization for %s.\n", it->first.c_str());
-			nl->OperatorOptimization();
 		}
 
 		if (nl_done.count(it->first) == 0) {
diff --git a/tests/gen-tests-makefile.sh b/tests/gen-tests-makefile.sh
index 66c86c440..a0fb23ac3 100755
--- a/tests/gen-tests-makefile.sh
+++ b/tests/gen-tests-makefile.sh
@@ -92,7 +92,7 @@ generate_tests() {
 	if [[ $do_sv = true ]]; then
 		for x in *.sv; do
 			if [ ! -f "${x%.sv}.ys"  ]; then
-				generate_ys_test "$x" "-p \"prep -top top; async2sync; select top; sat -enable_undef -verify -prove-asserts\" $yosys_args"
+				generate_ys_test "$x" "-p \"prep -top top; async2sync; sat -enable_undef -verify -prove-asserts\" $yosys_args"
 			fi;
 		done
 	fi;
diff --git a/tests/verific/README.md b/tests/verific/README.md
index 205d39eae..aa4ce6ca1 100644
--- a/tests/verific/README.md
+++ b/tests/verific/README.md
@@ -2,8 +2,6 @@
 
 ## Disabled
 
-<!-- - `import_warning_operator`: no VHDL -->
-<!-- - `mixed_flist`: no VHDL -->
 - `memory_semantics`: relies on initial values being retained, which we do not want
 - `rom_case`: we need different behavior for multi-port memories
 - `blackbox*`: we need different behavior for parametrized blackboxes
diff --git a/verific b/verific
index fc343c990..9280b3104 160000
--- a/verific
+++ b/verific
@@ -1 +1 @@
-Subproject commit fc343c9904855352fd8294bcd7209afcfca9bbbc
+Subproject commit 9280b31043881bbbc50bfedc74902b1f6debe81d