{"action":"created","issue":{"url":"https://api.github.com/repos/GaloisInc/saw-script/issues/40","labels_url":"https://api.github.com/repos/GaloisInc/saw-script/issues/40/labels{/name}","comments_url":"https://api.github.com/repos/GaloisInc/saw-script/issues/40/comments","events_url":"https://api.github.com/repos/GaloisInc/saw-script/issues/40/events","html_url":"https://github.com/GaloisInc/saw-script/issues/40","id":96424761,"number":40,"title":"Problem with SBV backend translation","user":{"login":"robdockins","id":5770507,"avatar_url":"https://avatars.githubusercontent.com/u/5770507?v=3","gravatar_id":"","url":"https://api.github.com/users/robdockins","html_url":"https://github.com/robdockins","followers_url":"https://api.github.com/users/robdockins/followers","following_url":"https://api.github.com/users/robdockins/following{/other_user}","gists_url":"https://api.github.com/users/robdockins/gists{/gist_id}","starred_url":"https://api.github.com/users/robdockins/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/robdockins/subscriptions","organizations_url":"https://api.github.com/users/robdockins/orgs","repos_url":"https://api.github.com/users/robdockins/repos","events_url":"https://api.github.com/users/robdockins/events{/privacy}","received_events_url":"https://api.github.com/users/robdockins/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/GaloisInc/saw-script/labels/bug","name":"bug","color":"fc2929"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":2,"created_at":"2015-07-21T21:54:54Z","updated_at":"2015-11-03T00:08:29Z","closed_at":null,"body":"The linked gist contains a Cryptol and saw-script demonstration of the problem.  \r\nhttps://gist.github.com/robdockins/d68d8f17487db793bc1b\r\n\r\nIn short, the concrete and ABC simulators for saw-core seem to be working correctly.  However, when the given Cryptol function is passed through any saw-script command backed by the SBV simulator, I get the following error message:\r\n```\r\ninternal: Nat subtraction result must be non-negative.\r\n``` \r\n\r\n"},"comment":{"url":"https://api.github.com/repos/GaloisInc/saw-script/issues/comments/153198814","html_url":"https://github.com/GaloisInc/saw-script/issues/40#issuecomment-153198814","issue_url":"https://api.github.com/repos/GaloisInc/saw-script/issues/40","id":153198814,"user":{"login":"robdockins","id":5770507,"avatar_url":"https://avatars.githubusercontent.com/u/5770507?v=3","gravatar_id":"","url":"https://api.github.com/users/robdockins","html_url":"https://github.com/robdockins","followers_url":"https://api.github.com/users/robdockins/followers","following_url":"https://api.github.com/users/robdockins/following{/other_user}","gists_url":"https://api.github.com/users/robdockins/gists{/gist_id}","starred_url":"https://api.github.com/users/robdockins/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/robdockins/subscriptions","organizations_url":"https://api.github.com/users/robdockins/orgs","repos_url":"https://api.github.com/users/robdockins/repos","events_url":"https://api.github.com/users/robdockins/events{/privacy}","received_events_url":"https://api.github.com/users/robdockins/received_events","type":"User","site_admin":false},"created_at":"2015-11-03T00:08:28Z","updated_at":"2015-11-03T00:08:28Z","body":"@brianhuffman , any idea what it would take to close this bug?  I don't really understand what the underlying issue is...\r\n"}}