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Abstracting over groups of assertions in Z3/SMT-LIB
Label on SMT-LIB 2.0 assertions in z3Is it possible to quantify over SMT models?SMT-LIB BenchmarksHow to define enumerated types in SMT-LIB for Z3How to unify variables in SMT-LIBRepresenting temporal constraints in SMT-LIBIs the QF_NRA logic in SMT-LIB decidable?Z3/SMT-LIB Evaluating function and collecting resultsHandling overflow in SMT-LIB/Z3translating loop semantics to SMT-LIB
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Are there good mechanisms in Z3 to abstract over assertions? I want to create a “function” that takes in parameters and makes assertions about those parameters, possibly with “local variable” definitions in it.
Imagine that I have a String and I want to assert that it represents a decimal number between 13 and 24. I could write a combination of regular expression assertions about the string and combine it with a str.to.int range assertion. I can do that directly, but if I have dozens of such variables I want to make the assertion about, it gets repetitive. I can use an external language API, or perhaps define a macro/function returning a boolean inside Z3 and assert that it’s true, but that feels a bit indirect. What’s idiomatic here? I want it to be just as easy for Z3 to solve as writing the assertions out by hand
z3 smt
asked Mar 24 at 3:52
copumpkincopumpkin
2,2821321
add a comment |
Are there good mechanisms in Z3 to abstract over assertions? I want to create a “function” that takes in parameters and makes assertions about those parameters, possibly with “local variable” definitions in it.
Imagine that I have a String and I want to assert that it represents a decimal number between 13 and 24. I could write a combination of regular expression assertions about the string and combine it with a str.to.int range assertion. I can do that directly, but if I have dozens of such variables I want to make the assertion about, it gets repetitive. I can use an external language API, or perhaps define a macro/function returning a boolean inside Z3 and assert that it’s true, but that feels a bit indirect. What’s idiomatic here? I want it to be just as easy for Z3 to solve as writing the assertions out by hand
z3 smt
asked Mar 24 at 3:52
copumpkincopumpkin
2,2821321
add a comment |
Are there good mechanisms in Z3 to abstract over assertions? I want to create a “function” that takes in parameters and makes assertions about those parameters, possibly with “local variable” definitions in it.
Imagine that I have a String and I want to assert that it represents a decimal number between 13 and 24. I could write a combination of regular expression assertions about the string and combine it with a str.to.int range assertion. I can do that directly, but if I have dozens of such variables I want to make the assertion about, it gets repetitive. I can use an external language API, or perhaps define a macro/function returning a boolean inside Z3 and assert that it’s true, but that feels a bit indirect. What’s idiomatic here? I want it to be just as easy for Z3 to solve as writing the assertions out by hand
z3 smt
asked Mar 24 at 3:52
copumpkincopumpkin
2,2821321
Are there good mechanisms in Z3 to abstract over assertions? I want to create a “function” that takes in parameters and makes assertions about those parameters, possibly with “local variable” definitions in it.
Imagine that I have a String and I want to assert that it represents a decimal number between 13 and 24. I could write a combination of regular expression assertions about the string and combine it with a str.to.int range assertion. I can do that directly, but if I have dozens of such variables I want to make the assertion about, it gets repetitive. I can use an external language API, or perhaps define a macro/function returning a boolean inside Z3 and assert that it’s true, but that feels a bit indirect. What’s idiomatic here? I want it to be just as easy for Z3 to solve as writing the assertions out by hand
z3 smt
z3 smt
asked Mar 24 at 3:52
copumpkincopumpkin
2,2821321
asked Mar 24 at 3:52
copumpkincopumpkin
2,2821321
asked Mar 24 at 3:52
copumpkincopumpkin
2,2821321
asked Mar 24 at 3:52
copumpkincopumpkin
2,2821321
asked Mar 24 at 3:52
copumpkincopumpkin
2,2821321
2,2821321
add a comment |
add a comment |
1 Answer
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You can use define-fun to define a Boolean function f such that you can (assert (f x y z ...)), where f can of course be a conjunction of multiple conditions. The define-fun will be inlined by Z3's SMT2 frontend, i.e., there should not be any runtime cost to it.
(Z3 also supports macros defined via (forall ((x ...)) (= (f x ...) ...)), but you need to explicitly apply the model-finder tactic to inline them.)
answered Mar 25 at 12:01
Christoph WintersteigerChristoph Wintersteiger
7,07911025
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You can use define-fun to define a Boolean function f such that you can (assert (f x y z ...)), where f can of course be a conjunction of multiple conditions. The define-fun will be inlined by Z3's SMT2 frontend, i.e., there should not be any runtime cost to it.
(Z3 also supports macros defined via (forall ((x ...)) (= (f x ...) ...)), but you need to explicitly apply the model-finder tactic to inline them.)
answered Mar 25 at 12:01
Christoph WintersteigerChristoph Wintersteiger
7,07911025
add a comment |
You can use define-fun to define a Boolean function f such that you can (assert (f x y z ...)), where f can of course be a conjunction of multiple conditions. The define-fun will be inlined by Z3's SMT2 frontend, i.e., there should not be any runtime cost to it.
(Z3 also supports macros defined via (forall ((x ...)) (= (f x ...) ...)), but you need to explicitly apply the model-finder tactic to inline them.)
answered Mar 25 at 12:01
Christoph WintersteigerChristoph Wintersteiger
7,07911025
add a comment |
You can use define-fun to define a Boolean function f such that you can (assert (f x y z ...)), where f can of course be a conjunction of multiple conditions. The define-fun will be inlined by Z3's SMT2 frontend, i.e., there should not be any runtime cost to it.
(Z3 also supports macros defined via (forall ((x ...)) (= (f x ...) ...)), but you need to explicitly apply the model-finder tactic to inline them.)
answered Mar 25 at 12:01
Christoph WintersteigerChristoph Wintersteiger
7,07911025
You can use define-fun to define a Boolean function f such that you can (assert (f x y z ...)), where f can of course be a conjunction of multiple conditions. The define-fun will be inlined by Z3's SMT2 frontend, i.e., there should not be any runtime cost to it.
(Z3 also supports macros defined via (forall ((x ...)) (= (f x ...) ...)), but you need to explicitly apply the model-finder tactic to inline them.)
answered Mar 25 at 12:01
Christoph WintersteigerChristoph Wintersteiger
7,07911025
answered Mar 25 at 12:01
Christoph WintersteigerChristoph Wintersteiger
7,07911025
answered Mar 25 at 12:01
Christoph WintersteigerChristoph Wintersteiger
7,07911025
answered Mar 25 at 12:01
Christoph WintersteigerChristoph Wintersteiger
7,07911025
7,07911025
add a comment |
add a comment |
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