mirror of
https://github.com/Z3Prover/z3
synced 2025-04-28 03:15:50 +00:00
Merge branch 'master' of https://github.com/Z3Prover/z3
This commit is contained in:
Nikolaj Bjorner
commit
31c58b0999
9 changed files with 256 additions and 87 deletions
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@ -68,8 +68,10 @@ extern "C" {
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(' ' == *m) || ('\n' == *m) ||
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('.' == *m) || ('e' == *m) ||
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('E' == *m) ||
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('p' == *m && is_float) ||
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('P' == *m && is_float))) {
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(is_float &&
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('p' == *m) ||
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('P' == *m) ||
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('+' == *m)))) {
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SET_ERROR_CODE(Z3_PARSER_ERROR);
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return 0;
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}
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|
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@ -8099,10 +8099,6 @@ class FPRef(ExprRef):
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def __gt__(self, other):
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return fpGT(self, other, self.ctx)
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def __ne__(self, other):
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return fpNEQ(self, other, self.ctx)
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def __add__(self, other):
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"""Create the Z3 expression `self + other`.
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@ -8824,7 +8820,7 @@ def _check_fp_args(a, b):
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_z3_assert(is_fp(a) or is_fp(b), "At least one of the arguments must be a Z3 floating-point expression")
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def fpLT(a, b, ctx=None):
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"""Create the Z3 floating-point expression `other <= self`.
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"""Create the Z3 floating-point expression `other < self`.
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>>> x, y = FPs('x y', FPSort(8, 24))
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>>> fpLT(x, y)
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@ -8846,7 +8842,7 @@ def fpLEQ(a, b, ctx=None):
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return _mk_fp_bin_pred(Z3_mk_fpa_leq, a, b, ctx)
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def fpGT(a, b, ctx=None):
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"""Create the Z3 floating-point expression `other <= self`.
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"""Create the Z3 floating-point expression `other > self`.
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>>> x, y = FPs('x y', FPSort(8, 24))
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>>> fpGT(x, y)
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@ -8857,11 +8853,9 @@ def fpGT(a, b, ctx=None):
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return _mk_fp_bin_pred(Z3_mk_fpa_gt, a, b, ctx)
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def fpGEQ(a, b, ctx=None):
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"""Create the Z3 floating-point expression `other <= self`.
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"""Create the Z3 floating-point expression `other >= self`.
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>>> x, y = FPs('x y', FPSort(8, 24))
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>>> x + y
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x + y
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>>> fpGEQ(x, y)
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x >= y
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>>> (x >= y).sexpr()
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@ -8870,7 +8864,7 @@ def fpGEQ(a, b, ctx=None):
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return _mk_fp_bin_pred(Z3_mk_fpa_geq, a, b, ctx)
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def fpEQ(a, b, ctx=None):
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"""Create the Z3 floating-point expression `other <= self`.
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"""Create the Z3 floating-point expression `fpEQ(other, self)`.
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>>> x, y = FPs('x y', FPSort(8, 24))
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>>> fpEQ(x, y)
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@ -8881,7 +8875,7 @@ def fpEQ(a, b, ctx=None):
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return _mk_fp_bin_pred(Z3_mk_fpa_eq, a, b, ctx)
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def fpNEQ(a, b, ctx=None):
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"""Create the Z3 floating-point expression `other <= self`.
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"""Create the Z3 floating-point expression `Not(fpEQ(other, self))`.
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>>> x, y = FPs('x y', FPSort(8, 24))
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>>> fpNEQ(x, y)
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@ -79,16 +79,18 @@ class symbolic_automata {
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return m_rep;
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}
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void add(unsigned i) { m_set.insert(i); }
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void insert(unsigned i) { m_set.insert(i); }
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bool contains(unsigned i) const { return m_set.contains(i); }
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bool is_empty() const { return m_set.empty(); }
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unsigned size() const { return m_set.num_elems(); }
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void remove(unsigned i) { m_set.remove(i); m_rep_chosen = false; }
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void clear() { m_set.reset(); m_rep_chosen = false; }
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uint_set::iterator begin() { return m_set.begin(); }
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uint_set::iterator end() { return m_set.end(); }
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uint_set::iterator begin() const { return m_set.begin(); }
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uint_set::iterator end() const { return m_set.end(); }
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};
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void add_block(block const& p1, unsigned p0_index, unsigned_vector& blocks, vector<block>& pblocks, unsigned_vector& W);
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public:
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symbolic_automata(M& m, ba_t& ba): m(m), m_ba(ba) {}
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automaton_t* mk_determinstic(automaton_t& a);
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@ -96,6 +98,8 @@ public:
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automaton_t* remove_epsilons(automaton_t& a);
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automaton_t* mk_total(automaton_t& a);
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automaton_t* mk_minimize(automaton_t& a);
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automaton_t* mk_minimize_total(automaton_t& a);
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automaton_t* mk_difference(automaton_t& a, automaton_t& b);
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automaton_t* mk_product(automaton_t& a, automaton_t& b);
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};
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@ -35,7 +35,7 @@ typename symbolic_automata<T, M>::automaton_t* symbolic_automata<T, M>::mk_total
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moves_t mvs, new_mvs;
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for (unsigned i = 0; i < dead_state; ++i) {
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mvs.reset();
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a.get_moves(i, mvs, true);
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a.get_moves_from(i, mvs, true);
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refs_t vs(m);
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for (unsigned j = 0; j < mvs.size(); ++j) {
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@ -54,7 +54,8 @@ typename symbolic_automata<T, M>::automaton_t* symbolic_automata<T, M>::mk_total
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return a.clone();
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}
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new_mvs.push_back(move_t(m, dead_state, dead_state, m_ba.mk_true()));
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automaton_t::append_moves(0, a, new_mvs);
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// TBD private: automaton_t::append_moves(0, a, new_mvs);
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return alloc(automaton_t, m, a.init(), a.final_states(), new_mvs);
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}
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@ -74,45 +75,69 @@ typename symbolic_automata<T, M>::automaton_t* symbolic_automata<T, M>::mk_minim
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if (!fa) {
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return 0;
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}
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block final_block(fa->final_states());
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block non_final_block(fa->non_final_states());
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vector<block> blocks;
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for (unsigned i = 0; i < fa->num_states(); ++i) {
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if (fa->is_final_state(i)) {
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blocks.push_back(final_block);
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return mk_minimize_total(*fa.get());
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}
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template<class T, class M>
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void symbolic_automata<T, M>::add_block(block const& p1, unsigned p0_index, unsigned_vector& blocks, vector<block>& pblocks, unsigned_vector& W) {
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block& p0 = pblocks[p0_index];
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if (p1.size() < p0.size()) {
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unsigned p1_index = pblocks.size();
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pblocks.push_back(p1);
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for (uint_set::iterator it = p1.begin(), end = p1.end(); it != end; ++it) {
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p0.remove(*it);
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blocks[*it] = p1_index;
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}
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if (W.contains(p0_index)) {
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W.push_back(p1_index);
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}
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else if (p0.size() <= p1.size()) {
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W.push_back(p0_index);
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}
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else {
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blocks.push_back(non_final_block);
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W.push_back(p1_index);
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}
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}
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}
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template<class T, class M>
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typename symbolic_automata<T, M>::automaton_t* symbolic_automata<T, M>::mk_minimize_total(automaton_t& a) {
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vector<block> pblocks;
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unsigned_vector blocks;
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unsigned_vector non_final;
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for (unsigned i = 0; i < a.num_states(); ++i) {
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if (!a.is_final_state(i)) {
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non_final.push_back(i);
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blocks.push_back(1);
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}
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else {
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blocks.push_back(0);
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}
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}
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vector<block> W;
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if (final_block.size() > non_final_block.size()) {
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W.push_back(non_final_block);
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}
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else {
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W.push_back(final_block);
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}
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#if 0
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pblocks.push_back(block(a.final_states())); // 0 |-> final states
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pblocks.push_back(block(non_final)); // 1 |-> non-final states
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unsigned_vector W;
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W.push_back(pblocks[0].size() > pblocks[1].size() ? 1 : 0);
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refs_t trail(m);
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u_map<T*> gamma;
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moves_t mvs;
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while (!W.empty()) {
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block R(W.back());
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block R(pblocks[W.back()]);
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W.pop_back();
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block Rcopy(R);
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gamma.reset();
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uint_set::iterator it = Rcopy.begin(), end = Rcopy.end();
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uint_set::iterator it = R.begin(), end = R.end();
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for (; it != end; ++it) {
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unsigned q = *it;
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unsigned dst = *it;
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mvs.reset();
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fa->get_moves_to(q, mvs);
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a.get_moves_to(dst, mvs);
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for (unsigned i = 0; i < mvs.size(); ++i) {
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unsigned src = mvs[i].src();
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if (blocks[src].size() > 1) {
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T* t = mvs[i]();
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if (pblocks[src].size() > 1) {
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T* t = mvs[i].t();
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T* t1;
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if (gamma.find(src, t1)) {
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t = m_ba.mk_or(t, t1);
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trail.push_back(t);
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@ -121,17 +146,132 @@ typename symbolic_automata<T, M>::automaton_t* symbolic_automata<T, M>::mk_minim
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}
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}
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}
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hashtable<block*> relevant;
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u_map<T*>::iterator end = gamma.end();
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for (u_map<T*>::iterator it = gamma.begin(); it != end; ++it) {
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relevant.insert(blocks[it->m_key]);
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uint_set relevant1;
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typedef typename u_map<T*>::iterator gamma_iterator;
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gamma_iterator gend = gamma.end();
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for (gamma_iterator git = gamma.begin(); git != gend; ++git) {
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unsigned p0A_index = blocks[git->m_key];
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if (relevant1.contains(p0A_index)) {
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continue;
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}
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relevant1.insert(p0A_index);
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block& p0A = pblocks[p0A_index];
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block p1;
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for (gamma_iterator it = gamma.begin(); it != gend; ++it) {
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if (p0A.contains(it->m_key)) p1.insert(it->m_key);
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}
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add_block(p1, p0A_index, blocks, pblocks, W);
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bool iterate = true;
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while (iterate) {
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iterate = false;
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uint_set relevant2;
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for (gamma_iterator it = gamma.begin(); it != gend; ++it) {
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unsigned p0B_index = blocks[it->m_key];
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if (pblocks[p0B_index].size() <= 1 || relevant2.contains(p0B_index)) {
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continue;
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}
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relevant2.insert(p0B_index);
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block const& p0B = pblocks[p0B_index];
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uint_set::iterator bi = p0B.begin(), be = p0B.end();
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block p1;
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p1.insert(*bi);
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bool split_found = false;
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ref_t psi(gamma[*bi], m);
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++bi;
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for (; bi != be; ++bi) {
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unsigned q = *bi;
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ref_t phi(gamma[q], m);
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if (split_found) {
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ref_t phi_and_psi(m_ba.mk_and(phi, psi), m);
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switch (m_ba.is_sat(phi_and_psi)) {
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case l_true:
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p1.insert(q);
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break;
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case l_undef:
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return 0;
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default:
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break;
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}
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}
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else {
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ref_t psi_min_phi(m_ba.mk_and(psi, m_ba.mk_not(phi)), m);
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lbool is_sat = m_ba.is_sat(psi_min_phi);
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if (is_sat == l_undef) {
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return 0;
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}
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if (is_sat == l_true) {
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psi = psi_min_phi;
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split_found = true;
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continue;
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}
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// psi is a subset of phi
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ref_t phi_min_psi(m_ba.mk_and(phi, m_ba.mk_not(psi)), m);
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is_sat = m_ba.is_sat(phi_min_psi);
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if (is_sat == l_undef) {
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return 0;
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}
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else if (is_sat == l_false) {
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p1.insert(q); // psi and phi are equivalent
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}
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else {
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p1.clear();
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p1.insert(q);
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psi = phi_min_psi;
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split_found = true;
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}
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}
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}
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if (p1.size() < p0B.size() && p0B.size() > 2) iterate = true;
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add_block(p1, p0B_index, blocks, pblocks, W);
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}
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}
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}
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}
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#endif
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return 0;
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unsigned new_init = pblocks[blocks[a.init()]].get_representative();
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// set moves
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map<unsigned_pair, T*, pair_hash<unsigned_hash, unsigned_hash>, default_eq<unsigned_pair> > conds;
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svector<unsigned_pair> keys;
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moves_t new_moves;
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for (unsigned i = 0; i < a.num_states(); ++i) {
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unsigned src = pblocks[blocks[i]].get_representative();
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typename automaton_t::moves const& mvs = a.get_moves_from(i);
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for (unsigned j = 0; j < mvs.size(); ++j) {
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unsigned dst = pblocks[blocks[mvs[j].dst()]].get_representative();
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unsigned_pair st(src, dst);
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T* t = 0;
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if (conds.find(st, t)) {
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t = m_ba.mk_or(t, mvs[j].t());
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trail.push_back(t);
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conds.insert(st, t);
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}
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else {
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conds.insert(st, mvs[j].t());
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keys.push_back(st);
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}
|
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}
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}
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for (unsigned i = 0; i < keys.size(); ++i) {
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unsigned_pair st = keys[i];
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new_moves.push_back(move_t(m, st.first, st.second, conds[st]));
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}
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// set final states.
|
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unsigned_vector new_final;
|
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uint_set new_final_set;
|
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for (unsigned i = 0; i < a.final_states().size(); ++i) {
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unsigned f = pblocks[blocks[a.final_states()[i]]].get_representative();
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if (!new_final_set.contains(f)) {
|
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new_final_set.insert(f);
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new_final.push_back(f);
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}
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}
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|
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return alloc(automaton_t, m, new_init, new_final, new_moves);
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}
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template<class T, class M>
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|
|
@ -146,6 +286,9 @@ typename symbolic_automata<T, M>::automaton_t* symbolic_automata<T, M>::mk_produ
|
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if (a.is_final_state(a.init()) && b.is_final_state(b.init())) {
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final.push_back(0);
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}
|
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if (false) {
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mk_minimize(a);
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}
|
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unsigned n = 1;
|
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moves_t mvsA, mvsB;
|
||||
while (!todo.empty()) {
|
||||
|
|
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|||
|
|
@ -435,11 +435,7 @@ namespace datalog {
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|||
void destroy() {
|
||||
SASSERT(this);
|
||||
this->~base_ancestor();
|
||||
#if _DEBUG
|
||||
memory::deallocate(__FILE__, __LINE__, this);
|
||||
#else
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memory::deallocate(this);
|
||||
#endif
|
||||
}
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public:
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/**
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|
|
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|||
|
|
@ -22,7 +22,7 @@ Author:
|
|||
#include "ast_pp.h"
|
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#include <climits>
|
||||
|
||||
static uint64_t uMaxInt(unsigned sz) {
|
||||
static uint64 uMaxInt(unsigned sz) {
|
||||
SASSERT(sz <= 64);
|
||||
return ULLONG_MAX >> (64u - sz);
|
||||
}
|
||||
|
|
@ -32,12 +32,12 @@ namespace {
|
|||
struct interval {
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// l < h: [l, h]
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// l > h: [0, h] U [l, UMAX_INT]
|
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uint64_t l, h;
|
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uint64 l, h;
|
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unsigned sz;
|
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bool tight;
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|
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interval() {}
|
||||
interval(uint64_t l, uint64_t h, unsigned sz, bool tight = false) : l(l), h(h), sz(sz), tight(tight) {
|
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interval(uint64 l, uint64 h, unsigned sz, bool tight = false) : l(l), h(h), sz(sz), tight(tight) {
|
||||
// canonicalize full set
|
||||
if (is_wrapped() && l == h + 1) {
|
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this->l = 0;
|
||||
|
|
@ -164,7 +164,7 @@ struct undo_bound {
|
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class bv_bounds_simplifier : public ctx_simplify_tactic::simplifier {
|
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typedef obj_map<expr, interval> map;
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typedef obj_map<expr, bool> expr_set;
|
||||
typedef obj_map<expr, expr_set*> expr_list_map;
|
||||
typedef obj_map<expr, unsigned> expr_cnt;
|
||||
|
||||
ast_manager& m;
|
||||
params_ref m_params;
|
||||
|
|
@ -172,10 +172,10 @@ class bv_bounds_simplifier : public ctx_simplify_tactic::simplifier {
|
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bv_util m_bv;
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vector<undo_bound> m_scopes;
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map m_bound;
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expr_list_map m_expr_vars;
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expr_set m_bound_exprs;
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svector<expr_set*> m_expr_vars;
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svector<expr_cnt*> m_bound_exprs;
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bool is_number(expr *e, uint64_t& n, unsigned& sz) const {
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bool is_number(expr *e, uint64& n, unsigned& sz) const {
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rational r;
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if (m_bv.is_numeral(e, r, sz) && sz <= 64) {
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n = r.get_uint64();
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@ -185,7 +185,7 @@ class bv_bounds_simplifier : public ctx_simplify_tactic::simplifier {
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}
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||||
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bool is_bound(expr *e, expr*& v, interval& b) const {
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uint64_t n;
|
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uint64 n;
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||||
expr *lhs, *rhs;
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unsigned sz;
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||||
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||||
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|
@ -233,7 +233,9 @@ class bv_bounds_simplifier : public ctx_simplify_tactic::simplifier {
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}
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||||
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||||
expr_set* get_expr_vars(expr* t) {
|
||||
expr_set*& entry = m_expr_vars.insert_if_not_there2(t, 0)->get_data().m_value;
|
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unsigned id = t->get_id();
|
||||
m_expr_vars.reserve(id + 1);
|
||||
expr_set*& entry = m_expr_vars[id];
|
||||
if (entry)
|
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return entry;
|
||||
|
||||
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|
@ -256,23 +258,33 @@ class bv_bounds_simplifier : public ctx_simplify_tactic::simplifier {
|
|||
return set;
|
||||
}
|
||||
|
||||
bool expr_has_bounds(expr* t) {
|
||||
bool has_bounds = false;
|
||||
if (m_bound_exprs.find(t, has_bounds))
|
||||
return has_bounds;
|
||||
expr_cnt* get_expr_bounds(expr* t) {
|
||||
unsigned id = t->get_id();
|
||||
m_bound_exprs.reserve(id + 1);
|
||||
expr_cnt*& entry = m_bound_exprs[id];
|
||||
if (entry)
|
||||
return entry;
|
||||
|
||||
expr_cnt* set = alloc(expr_cnt);
|
||||
entry = set;
|
||||
|
||||
if (!is_app(t))
|
||||
return set;
|
||||
|
||||
interval b;
|
||||
expr* e;
|
||||
if (is_bound(t, e, b)) {
|
||||
set->insert_if_not_there2(e, 0)->get_data().m_value++;
|
||||
}
|
||||
|
||||
app* a = to_app(t);
|
||||
if ((m_bv.is_bv_ule(t) || m_bv.is_bv_sle(t) || m.is_eq(t)) &&
|
||||
(m_bv.is_numeral(a->get_arg(0)) || m_bv.is_numeral(a->get_arg(1)))) {
|
||||
has_bounds = true;
|
||||
for (unsigned i = 0; i < a->get_num_args(); ++i) {
|
||||
expr_cnt* set_arg = get_expr_bounds(a->get_arg(i));
|
||||
for (expr_cnt::iterator I = set_arg->begin(), E = set_arg->end(); I != E; ++I) {
|
||||
set->insert_if_not_there2(I->m_key, 0)->get_data().m_value += I->m_value;
|
||||
}
|
||||
}
|
||||
|
||||
for (unsigned i = 0; !has_bounds && i < a->get_num_args(); ++i) {
|
||||
has_bounds = expr_has_bounds(a->get_arg(i));
|
||||
}
|
||||
|
||||
m_bound_exprs.insert(t, has_bounds);
|
||||
return has_bounds;
|
||||
return set;
|
||||
}
|
||||
|
||||
public:
|
||||
|
|
@ -289,8 +301,11 @@ public:
|
|||
}
|
||||
|
||||
virtual ~bv_bounds_simplifier() {
|
||||
for (expr_list_map::iterator I = m_expr_vars.begin(), E = m_expr_vars.end(); I != E; ++I) {
|
||||
dealloc(I->m_value);
|
||||
for (unsigned i = 0, e = m_expr_vars.size(); i < e; ++i) {
|
||||
dealloc(m_expr_vars[i]);
|
||||
}
|
||||
for (unsigned i = 0, e = m_bound_exprs.size(); i < e; ++i) {
|
||||
dealloc(m_bound_exprs[i]);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -393,7 +408,13 @@ public:
|
|||
if (is_bound(t, t1, b)) {
|
||||
return b.is_full() || m_bound.contains(t1);
|
||||
}
|
||||
return expr_has_bounds(t);
|
||||
|
||||
expr_cnt* bounds = get_expr_bounds(t);
|
||||
for (expr_cnt::iterator I = bounds->begin(), E = bounds->end(); I != E; ++I) {
|
||||
if (I->m_value > 1 || m_bound.contains(I->m_key))
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
virtual void pop(unsigned num_scopes) {
|
||||
|
|
|
|||
|
|
@ -198,7 +198,7 @@ void memory::display_i_max_usage(std::ostream & os) {
|
|||
<< "\n";
|
||||
}
|
||||
|
||||
#if _DEBUG
|
||||
#if Z3DEBUG
|
||||
void memory::deallocate(char const * file, int line, void * p) {
|
||||
deallocate(p);
|
||||
TRACE_CODE(if (!g_finalizing) TRACE("memory", tout << "dealloc " << std::hex << p << std::dec << " " << file << ":" << line << "\n";););
|
||||
|
|
|
|||
|
|
@ -60,7 +60,7 @@ public:
|
|||
static void deallocate(void* p);
|
||||
static ALLOC_ATTR void* allocate(size_t s);
|
||||
static ALLOC_ATTR void* reallocate(void *p, size_t s);
|
||||
#if _DEBUG
|
||||
#if Z3DEBUG
|
||||
static void deallocate(char const* file, int line, void* p);
|
||||
static ALLOC_ATTR void* allocate(char const* file, int line, char const* obj, size_t s);
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -205,15 +205,23 @@ void mpf_manager::set(mpf & o, unsigned ebits, unsigned sbits, mpf_rounding_mode
|
|||
// We expect [i].[f]P[e], where P means that the exponent is interpreted as 2^e instead of 10^e.
|
||||
|
||||
std::string v(value);
|
||||
size_t e_pos = v.find('p');
|
||||
if (e_pos == std::string::npos) e_pos = v.find('P');
|
||||
|
||||
std::string f, e;
|
||||
bool sgn = false;
|
||||
|
||||
if (v.substr(0, 1) == "-") {
|
||||
sgn = true;
|
||||
v = v.substr(1);
|
||||
}
|
||||
else if (v.substr(0, 1) == "+")
|
||||
v = v.substr(1);
|
||||
|
||||
size_t e_pos = v.find('p');
|
||||
if (e_pos == std::string::npos) e_pos = v.find('P');
|
||||
f = (e_pos != std::string::npos) ? v.substr(0, e_pos) : v;
|
||||
e = (e_pos != std::string::npos) ? v.substr(e_pos+1) : "0";
|
||||
|
||||
TRACE("mpf_dbg", tout << " f = " << f << " e = " << e << std::endl;);
|
||||
TRACE("mpf_dbg", tout << "sgn = " << sgn << " f = " << f << " e = " << e << std::endl;);
|
||||
|
||||
scoped_mpq q(m_mpq_manager);
|
||||
m_mpq_manager.set(q, f.c_str());
|
||||
|
|
@ -222,6 +230,7 @@ void mpf_manager::set(mpf & o, unsigned ebits, unsigned sbits, mpf_rounding_mode
|
|||
m_mpz_manager.set(ex, e.c_str());
|
||||
|
||||
set(o, ebits, sbits, rm, ex, q);
|
||||
o.sign = sgn;
|
||||
|
||||
TRACE("mpf_dbg", tout << "set: res = " << to_string(o) << std::endl;);
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue