Allow for path-sensitive base analysis#1791
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michael-schwarz merged 3 commits intomasterfrom Jul 30, 2025
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Which is essentially trace abstraction. One could build a variety of configurable versions of it, e.g. a sequence of last k branches, not a set. |
sim642
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Jul 30, 2025
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This gives 159 new verdicts on former unknown verdicts in a 300sec svcomp benchmark run with only def_exc and intervals enabled. |
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CHANGES: * Add division by zero analysis (goblint/analyzer#1764). * Add bitfield domain (goblint/analyzer#1623). * Add weakly-relational C-2PO pointer analysis (goblint/analyzer#1485). * Add widening delay (goblint/analyzer#1358, goblint/analyzer#1442, goblint/analyzer#1483). * Add narrowing of globals to top-down solver (goblint/analyzer#1636). * Add weak dependencies to top-down solver (goblint/analyzer#1746, goblint/analyzer#1747). * Add YAML ghost witness generation (goblint/analyzer#1394). * Remove GraphML witness generation (goblint/analyzer#1732, goblint/analyzer#1733, goblint/analyzer#1738). * Use C standard option for preprocessing (goblint/analyzer#1807). * Add bash completion for array options (goblint/analyzer#1670, goblint/analyzer#1705, goblint/analyzer#1750). * Make `malloc(0)` semantics configurable (goblint/analyzer#1418, goblint/analyzer#1777). * Update path-sensitive analyses (goblint/analyzer#1785, goblint/analyzer#1791, goblint/analyzer#1792). * Fix evaluation of library function arguments (goblint/analyzer#1758, goblint/analyzer#1761). * Optimize affine equalities analysis using sparse matrices (goblint/analyzer#1459, goblint/analyzer#1625). * Prepare for parallelism (goblint/analyzer#1708, goblint/analyzer#1744, goblint/analyzer#1748, goblint/analyzer#1781, goblint/analyzer#1790).
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@DrMichaelPetter: This is what I had in mind as a config of last resort, i.e., a concrete interpreter. It is enabled by making base path-sensitive (which had no effect up-to-now).
I had another idea where we only track the set of taken branches which hopefully has better termination behavior (I'll try to vibe-code it tomorrow), but this is still a reasonable thing to do once everything else has failed.