tactic * mk_qflra_tactic(ast_manager & m, params_ref const & p) {
params_ref pivot_p;
pivot_p.set_bool("arith.greatest_error_pivot", true);
params_ref main_p = p;
main_p.set_bool("elim_and", true);
main_p.set_bool("som", true);
main_p.set_bool("blast_distinct", true);
params_ref ctx_simp_p;
ctx_simp_p.set_uint("max_depth", 30);
ctx_simp_p.set_uint("max_steps", 5000000);
params_ref lhs_p;
lhs_p.set_bool("arith_lhs", true);
lhs_p.set_bool("eq2ineq", true);
params_ref elim_to_real_p;
elim_to_real_p.set_bool("elim_to_real", true);
#if 0
tactic * mip =
and_then(fail_if(mk_produce_proofs_probe()),
fail_if(mk_produce_unsat_cores_probe()),
using_params(and_then(and_then(mk_simplify_tactic(m),
mk_recover_01_tactic(m),
using_params(mk_simplify_tactic(m), elim_to_real_p),
mk_propagate_values_tactic(m)),
using_params(mk_ctx_simplify_tactic(m), ctx_simp_p),
mk_elim_uncnstr_tactic(m),
mk_solve_eqs_tactic(m),
using_params(mk_simplify_tactic(m), lhs_p),
using_params(mk_simplify_tactic(m), elim_to_real_p)
),
main_p),
fail_if(mk_not(mk_is_mip_probe())),
try_for(mk_mip_tactic(m), 30000),
mk_fail_if_undecided_tactic());
#endif
// return using_params(or_else(mip,
// using_params(mk_smt_tactic(m), pivot_p)),
// p);
#if 0
params_ref simplex_0, simplex_1, simplex_2;
simplex_0.set_uint("lp.simplex_strategy", 0);
simplex_1.set_uint("lp.simplex_strategy", 1);
simplex_2.set_uint("lp.simplex_strategy", 2);
return par(using_params(mk_smt_tactic(), simplex_0),
using_params(mk_smt_tactic(), simplex_1),
using_params(mk_smt_tactic(), simplex_2));
#else
return using_params(using_params(mk_smt_tactic(m), pivot_p), p);
#endif
}
// Try to find a model for an unbounded ILP problem.
// Fails if the problem is no ILP.
static tactic * mk_ilp_model_finder_tactic(ast_manager & m) {
params_ref add_bounds_p1;
add_bounds_p1.set_rat(":add-bound-lower", rational(-16));
add_bounds_p1.set_rat(":add-bound-upper", rational(15));
params_ref add_bounds_p2;
add_bounds_p2.set_rat(":add-bound-lower", rational(-32));
add_bounds_p2.set_rat(":add-bound-upper", rational(31));
return and_then(fail_if_not(mk_and(mk_is_ilp_probe(), mk_is_unbounded_probe())),
fail_if(mk_produce_proofs_probe()),
fail_if(mk_produce_unsat_cores_probe()),
mk_propagate_ineqs_tactic(m),
or_else(try_for(mk_mip_tactic(m), 5000),
try_for(mk_no_cut_smt_tactic(100), 2000),
and_then(using_params(mk_add_bounds_tactic(m), add_bounds_p1),
try_for(mk_lia2sat_tactic(m), 5000)),
try_for(mk_no_cut_smt_tactic(200), 5000),
and_then(using_params(mk_add_bounds_tactic(m), add_bounds_p2),
try_for(mk_lia2sat_tactic(m), 10000)),
mk_mip_tactic(m)),
mk_fail_if_undecided_tactic());
}
static tactic * mk_pb_tactic(ast_manager & m) {
params_ref pb2bv_p;
pb2bv_p.set_bool(":ite-extra", true);
pb2bv_p.set_uint(":pb2bv-all-clauses-limit", 8);
return and_then(fail_if_not(mk_is_pb_probe()),
fail_if(mk_produce_proofs_probe()),
fail_if(mk_produce_unsat_cores_probe()),
or_else(and_then(fail_if(mk_ge(mk_num_exprs_probe(), mk_const_probe(SMALL_SIZE))),
fail_if_not(mk_is_ilp_probe()),
try_for(mk_mip_tactic(m), 8000),
mk_fail_if_undecided_tactic()),
and_then(using_params(mk_pb2bv_tactic(m), pb2bv_p),
fail_if_not(mk_is_qfbv_probe()),
mk_bv2sat_tactic(m))));
}
