Ramon benchmark for Z3
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Job description: 
Job tag: smt_qflia-threads-4-updatedmaster
Runner: lev-ripper
Z3 repo: Z3Prover/z3
Z3 commit: 0076e3bf977b9581585c50d0e3bf8b42c7123cbf
Z3 branch: master
Z3 options: "-T:30 smt.threads=4 tactic.default_tactic=smt"
Z3 inputs: inputs/QF_LIA
Z3 commit message: Search tree core resolution optimization (#8066)

* Add cube tree optimization about resolving cores recursively up the path, to prune. Also integrate asms into the tree so they're not tracked separately (#7960)

* draft attempt at optimizing cube tree with resolvents. have not tested/ran yet

* adding comments

* fix bug about needing to bubble resolvent upwards to highest ancestor

* fix bug where we need to cover the whole resolvent in the path when bubbling up

* clean up comments

* close entire tree when sibling resolvent is empty

* integrate asms directly into cube tree, remove separate tracking

* try to fix bug about redundant resolutions, merging close and try_resolve_upwards into once function

* separate the logic again to avoid mutual recursion

* Refactor search tree closure and resolution logic

Refactor close_with_core to simplify logic and remove unnecessary parameters. Update sibling resolvent computation and try_resolve_upwards for clarity.

* apply formatting

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* Refactor close_with_core to use current node in lambda

* Fix formatting issues in search_tree.h

* fix build issues

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* Update smt_parallel.cpp

* Change loop variable type in unsat core processing

* Change method to retrieve unsat core from root

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
Co-authored-by: Nikolaj Bjorner <nbjorner@microsoft.com>
