Why it is slower to get query result from z3 java API then get from z3 directly? -

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just noticed benchmarks, slow query result z3 via java api. however, if dumped query smt2 format, , run z3 in command line directly, takes less second. wonder why?

i noticed problem contains (push) command, removing changes performance dramatically. when z3 first sees (push), switches different solver supports incrementality , can have dramatic impact on performance. setting verbosity 15 via -v:15, first line of z3s output tells solver using, e.g., when push command present says

(combined-solver "using solver 2 (without timeout)")

and when not, says

(combined-solver "using solver 1")

for given example, solver 2 happens faster.


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