Update CaDiCaL from 1.5.3 to 1.7.2

Update to the latest release. The only remaining local patch is to add a file
suffix to CaDiCaL's VERSION file.

Author: tautschnig

scripts/cadical-1.5.3-patch

@@ -0,0 +1,22 @@
+diff --git a/scripts/make-build-header.sh b/scripts/make-build-header.sh
+index e8f6746..1290024 100755
+--- a/scripts/make-build-header.sh
++++ b/scripts/make-build-header.sh
+@@ -20,7 +20,7 @@ warning () {
+ 
+ #--------------------------------------------------------------------------#
+ 
+-[ ! -f VERSION -a ! -f ../VERSION ] && \
++[ ! -f VERSION.txt -a ! -f ../VERSION.txt ] && \
+ die "needs to be called from build sub-directory"
+ 
+ [ -f makefile ] || \
+@@ -29,7 +29,7 @@ warning "could not find 'makefile'"
+ #--------------------------------------------------------------------------#
+ # The version.
+ #
+-VERSION="`cat ../VERSION`"
++VERSION="`cat ../VERSION.txt`"
+ if [ x"$VERSION" = x ]
+ then
+   warning "could not determine 'VERSION'"

scripts/cadical-1.7.2-patch

@@ -181,14 +181,14 @@ glucose-download:
 	@(cd ../glucose-syrup; patch -p1 < ../scripts/glucose-syrup-patch)
 	@$(RM) $(glucose_rev).tar.gz
 
-cadical_release = rel-1.5.3
+cadical_release = rel-1.7.2
 cadical-download:
 	@echo "Downloading CaDiCaL $(cadical_release)"
 	@$(DOWNLOADER) https://github.com/arminbiere/cadical/archive/$(cadical_release).tar.gz
 	@$(TAR) xfz $(cadical_release).tar.gz
 	@rm -Rf ../cadical
 	@mv cadical-$(cadical_release) ../cadical
-	@(cd ../cadical; patch -p1 < ../scripts/cadical-1.5.3-patch)
+	@(cd ../cadical; patch -p1 < ../scripts/cadical-1.7.2-patch)
 	@(cd ../cadical && ./configure)
 	# Need to rename VERSION so that it isn't picked up by `#include<version>` on
 	# macOS which is case insensitive

src/Makefile

@@ -124,11 +124,11 @@ foreach(SOLVER ${sat_impl})
         message(STATUS "Building solvers with cadical")
 
         download_project(PROJ cadical
-            URL https://github.com/arminbiere/cadical/archive/rel-1.5.3.tar.gz
-            PATCH_COMMAND patch -p1 -i ${CBMC_SOURCE_DIR}/../scripts/cadical-1.5.3-patch
+            URL https://github.com/arminbiere/cadical/archive/rel-1.7.2.tar.gz
+            PATCH_COMMAND patch -p1 -i ${CBMC_SOURCE_DIR}/../scripts/cadical-1.7.2-patch
             COMMAND cmake -E copy ${CBMC_SOURCE_DIR}/../scripts/cadical_CMakeLists.txt CMakeLists.txt
             COMMAND ./configure
-            URL_MD5 265b1a715000ed3c5b6de36ddd1278a0
+            URL_MD5 be646831a017f81b300664e58deba1b5
         )
 
         add_subdirectory(${cadical_SOURCE_DIR} ${cadical_BINARY_DIR})
@@ -147,10 +147,10 @@ foreach(SOLVER ${sat_impl})
         message(STATUS "Building with IPASIR solver linking against: CaDiCaL")
 
         download_project(PROJ cadical
-            URL https://github.com/arminbiere/cadical/archive/rel-1.5.3.tar.gz
-            PATCH_COMMAND patch -p1 -i ${CBMC_SOURCE_DIR}/../scripts/cadical-1.5.3-patch
+            URL https://github.com/arminbiere/cadical/archive/rel-1.7.2.tar.gz
+            PATCH_COMMAND patch -p1 -i ${CBMC_SOURCE_DIR}/../scripts/cadical-1.7.2-patch
             COMMAND ./configure
-            URL_MD5 265b1a715000ed3c5b6de36ddd1278a0
+            URL_MD5 be646831a017f81b300664e58deba1b5
         )
 
         message(STATUS "Building CaDiCaL")