TG-442 Add Coverity scan

.travis.yml

@@ -127,6 +127,43 @@ jobs:
         - cmake --build build -- -j4
       script: (cd build; ctest -V -L CORE)
 
+    # Run Coverity
+    - stage: Test different OS/CXX/Flags
+      os: linux
+      sudo: required
+      compiler: gcc
+      cache: ccache
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - libwww-perl
+            - g++-5
+        coverity_scan:
+          project:
+            name: "diffblue/cbmc"
+            description: "Travis build of ${TRAVIS_COMMIT}"
+          notification_email: "[email protected]"
+          build_command_prepend: "make -C src minisat2-download"
+          build_command: "make -C src -j2"
+          branch_pattern: "develop"
+      before_install:
+        - |
+          if [[ "${TRAVIS_EVENT_TYPE}" != "cron" ]]
+          then
+            echo "This is not a cron build and build is not needed."
+            travis_terminate 0
+          fi
+        - mkdir bin ; ln -s /usr/bin/gcc-5 bin/gcc
+        - sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-5 90
+        - g++ --version
+      # Coverity runs as part of before_script
+      env:
+        - NAME="COVERITY_SCAN"
+        - COMPILER="ccache g++"
+      script: echo "This is coverity build. No need for tests."
+
   allow_failures:
     - <<: *linter-stage
 

README.md

@@ -1,4 +1,5 @@
 [![Build Status][travis_img]][travis] [![Build Status][appveyor_img]][appveyor]
+[![Build Status][coverity_img]][coverity]
 
 [CProver Wiki](http://www.cprover.org/wiki)
 
@@ -47,4 +48,6 @@ License
 [travis]: https://travis-ci.org/diffblue/cbmc
 [travis_img]: https://travis-ci.org/diffblue/cbmc.svg?branch=master
 [appveyor]: https://ci.appveyor.com/project/diffblue/cbmc/
-[appveyor_img]: https://ci.appveyor.com/api/projects/status/github/diffblue/cbmc?svg=true&branch=master
+[appveyor_img]: https://ci.appveyor.com/api/projects/status/github/diffblue/cbmc?svg=true&branch=master
+[coverity]: https://scan.coverity.com/projects/diffblue-cbmc
+[coverity_img]: https://scan.coverity.com/projects/13552/badge.svg