Comprehensive backend-independent counterexamples#883
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| // License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| // file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
| // | ||
| // Copyright (c) 2011-2015 ETH Zurich. |
| @@ -0,0 +1,251 @@ | |||
| package viper.silver.verifier | |||
| * - a "raw" counterexample ([[RawCounterexample]]) that contains all information in a simple, | ||
| * machine-readable form, keyed by the backend-internal (SMT/Boogie) identifiers, and | ||
| * - a "resolved" counterexample ([[ResolvedCounterexample]]) that makes the raw one | ||
| * human-readable, e.g. by binding heap resources to their AST nodes and translating internal |
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This is no longer true
| // License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| // file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
| // | ||
| // Copyright (c) 2011-2025 ETH Zurich. |
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This PR adds the core components for a backend-independent counterexample model, to be used in either backend using the command line parameter
--counterexample=resolved(or a raw version with--counterexample=raw).Unlike the current
--counterexample=variablesoption, it contains information not just about local variables, but also about the heap, functions, etc.Unlike Silicon's current
--counterexample=mapped, which is exclusive to Silicon, the new model also supports quantified permissions and wands, and also works in Carbon.Implementations in Silicon and Carbon will get their own PRs.
This is the result of @rvandoren's practical work project, with a bunch of additions from me.