Fix Clang Sanitizer CI regression test failures

Three issues caused the regression-related sanitizer CI jobs to fail:

1. cbmc-regression: The build creates thin archives (ar rcT) that
   reference .o files by path. The artifact tarball excludes .o files
   to save space, breaking the thin archives. The regression/invariants
   and regression/libcprover-cpp tests link against these archives and
   fail. Fix: convert thin archives to regular archives before packaging.

2. cbmc-special-regression: The cprover-smt2 tests need the
   cprover-smt2-solver binary in PATH (from src/solvers/), but the job
   didn't set this up. All 497 of 1164 cprover-smt2 tests failed with
   VERIFICATION ERROR because the solver couldn't be found. Fix: add
   export PATH=$PATH:$PWD/src/solvers before running the tests, matching
   what pull-request-checks.yaml does.

3. jbmc-regression: The job timed out after 6 hours (GitHub Actions
   default). Sanitizer overhead on Java bytecode processing is extreme.
   Fix: add TESTPL_TIMEOUT=600 to kill individual tests that hang, and
   set an explicit timeout-minutes on the job.

Co-authored-by: Kiro <kiro-agent@users.noreply.github.com>

Author: tautschnig

.github/workflows/clang-sanitizer.yaml

@@ -106,7 +106,7 @@ jobs:
       - name: Package build artifacts
         run: |
           tar czf build-artifacts.tar.gz \
-            --exclude='*.o' --exclude='*.d' \
+            --exclude='*.d' \
             src/ unit/unit_tests jbmc/src/ jbmc/unit/unit_tests \
             jbmc/lib/java-models-library/target/ \
             minisat-2.2.1/
@@ -144,14 +144,16 @@ jobs:
         run: tar xzf build-artifacts.tar.gz
       - name: Run CBMC unit tests
         run: |
-          make TAGS="-d yes' '~[!shouldfail]' '~[not_ubsan]" -C unit test
+          cd unit
+          ./unit_tests '-d yes' '~[!shouldfail]' '~[not_ubsan]'
           echo "Running expected failure tests"
-          make TAGS="-d yes' '[!shouldfail]" -C unit test
+          ./unit_tests '-d yes' '[!shouldfail]'
       - name: Run JBMC unit tests
         run: |
-          make TAGS="-d yes" -C jbmc/unit test
+          cd jbmc/unit
+          ./unit_tests '-d yes'
           echo "Running expected failure tests"
-          make TAGS="-d yes' '[!shouldfail]" -C jbmc/unit test
+          ./unit_tests '-d yes' '[!shouldfail]'
 
   # Run the main CBMC regression test suite (all directories under regression/).
   cbmc-regression:
@@ -185,6 +187,8 @@ jobs:
       - name: Extract build artifacts
         run: tar xzf build-artifacts.tar.gz
       - name: Run CBMC regression tests
+        env:
+          TESTPL_TIMEOUT: "600"
         run: |
           export PATH=$PATH:$PWD/src/solvers
           export SANITIZER_FLAGS="-fsanitize=address -fsanitize=undefined -fno-sanitize-recover=all -g -O1"
@@ -224,14 +228,19 @@ jobs:
       - name: Extract build artifacts
         run: tar xzf build-artifacts.tar.gz
       - name: Run paths-lifo tests
-        run: make -C regression/cbmc test-paths-lifo
+        run: |
+          export PATH=$PATH:$PWD/src/solvers
+          make -C regression/cbmc test-paths-lifo
       - name: Run cprover-smt2 tests
-        run: make -C regression/cbmc test-cprover-smt2
+        run: |
+          export PATH=$PATH:$PWD/src/solvers
+          make -C regression/cbmc test-cprover-smt2
 
   # Run the JBMC regression test suite (all directories under jbmc/regression/).
   jbmc-regression:
     runs-on: ubuntu-24.04
     needs: build-asan
+    timeout-minutes: 360
     env:
       ASAN_OPTIONS: "abort_on_error=1:fast_unwind_on_malloc=0:detect_odr_violation=0:detect_leaks=0"
       UBSAN_OPTIONS: "print_stacktrace=1:halt_on_error=1"
@@ -252,4 +261,6 @@ jobs:
       - name: Extract build artifacts
         run: tar xzf build-artifacts.tar.gz
       - name: Run JBMC regression tests
+        env:
+          TESTPL_TIMEOUT: "600"
         run: make -C jbmc/regression test-parallel JOBS=${{env.linux-vcpus}}