Symbolic VMTests #1359
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Symbolic VMTests #1359
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disconnect3d
commented
Jan 21, 2019
| self.assertEqual(to_constant(world.get_storage_data({hex(account_address)}, {key})), {value})''' | ||
| for key, value in account['storage'].items(): | ||
| output += f''' | ||
| self.assertEqual(solve(world.get_storage_data({hex(account_address)}, {key})), {value})''' |
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So currently we do not call solve on key here but this works so far.
* EVM: Add support for EXP with concrete/solvable exponent Adds support for EXP aka POW, with concrete or solvable exponent, fixing #1005 effectively. Not sure if we can do it any better - it seems z3 doesn't have exp/pow for bitvectors. * Update operators.py * Update evm.py * Use concretized_args * Move Operators.POW to EVM._exp * Extend travis wait for output to 30m * Extend travis build to 60m... * Fix Operators.ITE -> Operators.ITEBV * Split ethereum travis job to two jobs * EVM.EXP: concretize base=SAMPLED * Fix concrete tests: use to_constant * Fix set storage in concrete tests
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Moved the effort to #1431. |
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Changes the EVM tests auto-generator to be able to generate symbolic tests.
VMTests were generated and added to the commit - so we have both concrete and symbolic tests for frontier.
The symbolic tests works by creating all possible symbolic values as
BitVecVariables and by preconstraining their value to the initial value. At the end for all thepostdata (which is specified in VMTests json files) solver is asked for solutions and it is checked whether the value is correct (as expected - as specified in the json file) and if there is only one solution.This change is