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Logging facility for spacer plus minor improvements (#3368)

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* [spacer] logging solver events

New option fp.spacer.trace_file='file.log' enables logging solving events
into a file.

These events are useful for debugging the solver, but also for visualizing
the solving process in a variety of ways

* [spacer] allow setting logic for solvers used by spacer

* [spacer] option to set arithmetic solver explicitly

* [spacer] improve of dumping solver_pool state for debugging

* fix propagate_ineqs to handle strict inequality

Co-authored-by: Nham Van Le <nv3le@precious3.eng.uwaterloo.ca>
This commit is contained in:
Arie Gurfinkel 2020-03-16 23:31:44 -04:00 • committed by GitHub
parent f06deca7e0
commit 6180a5276d
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GPG key ID: 4AEE18F83AFDEB23
5 changed files with 143 additions and 58 deletions
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23
src/tactic/arith/propagate_ineqs_tactic.cpp
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@ -202,8 +202,27 @@ struct propagate_ineqs_tactic::imp {
k = GE;
}
}
else {
return false;
else if (m_util.is_lt(t)) {
if (sign) {
k = GE;
strict = false;
} else {
k = LE;
strict = true;
}
}
else if (m_util.is_gt(t)) {
//x > y == x <=y, strict = false
if (sign) {
k = LE;
strict = false;
} else {
k = GE;
strict = true;
}
}
else {
return false;
}
expr * lhs = to_app(t)->get_arg(0);
expr * rhs = to_app(t)->get_arg(1);