results now include line number

[kroening]

This is a substantial change in the console interface: cbmc now gives the line number of the property in the summary result view.

Previously, the only way to obtain this information was to use --show-properties.

• Each commit message has a non-empty body, explaining why the change was made.
• n/a Methods or procedures I have added are documented, following the guidelines provided in CODING_STANDARD.md.
• Regression or unit tests are included, or existing tests cover the modified code (in this case I have detailed which ones those are in the commit message).
• n/a My commit message includes data points confirming performance improvements (if claimed).
• My PR is restricted to a single feature or bugfix.
• White-space or formatting changes outside the feature-related changed lines are in commits of their own.

[smowton]

Though CI failure looks real

[allredj]

✔️
Passed Diffblue compatibility checks (cbmc commit: 73c3384).
Build URL: https://travis-ci.com/diffblue/test-gen/builds/90265840