cbmc-concurrency tests: FreeBSD would require sound pointer handling

This is the same problem as previously seen on macOS.

Author: tautschnig

regression/cbmc-concurrency/CMakeLists.txt

@@ -1,4 +1,4 @@
-if((NOT WIN32) AND (NOT APPLE))
+if((NOT WIN32) AND (NOT APPLE) AND (NOT (CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")))
 add_test_pl_tests(
     "$<TARGET_FILE:cbmc> --validate-goto-model --validate-ssa-equation"
 )

regression/cbmc-concurrency/Makefile

@@ -3,9 +3,9 @@ default: tests.log
 include ../../src/config.inc
 include ../../src/common
 
-ifeq ($(filter-out OSX MSVC,$(BUILD_ENV_)),)
+ifeq ($(filter-out OSX MSVC FreeBSD,$(BUILD_ENV_)),)
 	# no POSIX threads on Windows
-	# for OSX we'd need sound handling of pointers in multi-threaded programs
+	# for OSX and FreeBSD we'd need sound handling of pointers in multi-threaded programs
 	no_pthread = -X pthread
 endif