Add missing cleanup

make clean did not actually remove all files.

regression/Makefile

@@ -114,9 +114,7 @@ test-parallel:
 
 .PHONY: clean
 clean:
-	@for dir in *; do \
-		if [ -d "$$dir" ]; then \
-			$(MAKE) -C "$$dir" clean; \
-		fi; \
+	@for dir in $(DIRS); do \
+		$(MAKE) -C "$$dir" clean; \
 	done;
 	$(RM) tests.log

regression/ansi-c/Makefile

@@ -64,4 +64,4 @@ build_goto_binaries:
 clean:
 	find . -name '*.out' -execdir $(RM) '{}' \;
 	find . -name '*.gb' -execdir $(RM) '{}' \;
-	$(RM) tests.log tests-c++-front-end.log
+	$(RM) tests*.log

regression/catch-framework/Makefile

@@ -6,4 +6,5 @@ test:
 tests.log: ../test.pl test
 
 clean:
+	find . -name '*.out' -execdir $(RM) '{}' \;
 	$(RM) tests*.log

regression/cbmc-primitives/Makefile

@@ -11,4 +11,4 @@ tests.log: ../test.pl
 
 clean:
 	find . -name '*.out' -execdir $(RM) '{}' \;
-	$(RM) tests.log
+	$(RM) tests*.log

regression/contracts-dfcc/Makefile

@@ -34,10 +34,10 @@ tests.log: ../test.pl test
 
 clean:
 	@for dir in *; do \
-		$(RM) tests.log; \
 		if [ -d "$$dir" ]; then \
 			cd "$$dir"; \
 			$(RM) *.out *.gb *.smt2; \
 			cd ..; \
 		fi \
 	done
+	$(RM) tests*.log

regression/cprover/Makefile

@@ -10,4 +10,5 @@ test-no-p:
 	@../test.pl -e -c '../../../src/cprover/cprover'
 
 clean:
+	find . -name '*.out' -execdir $(RM) '{}' \;
 	$(RM) tests.log

regression/goto-harness/Makefile

@@ -23,4 +23,5 @@ tests.log: ../test.pl
 clean:
 	find . -name '*.out' -execdir $(RM) '{}' \;
 	find . -name '*.gb' -execdir $(RM) {} \;
+	find . -name '*-harness.c' -execdir $(RM) {} \;
 	$(RM) tests.log

regression/goto-instrument/Makefile

@@ -26,3 +26,4 @@ clean:
 			cd ..; \
 		fi \
 	done
+	$(RM) ../cbmc/Recursion6/*.gb

regression/solver-hardness/Makefile

@@ -16,4 +16,5 @@ tests.log: ../test.pl test
 
 clean:
 	find . -name '*.out' -execdir $(RM) '{}' \;
+	find . -name '*.json' -execdir $(RM) '{}' \;
 	$(RM) tests.log