Lpbounds (#4492)

* remove inheritance from bound propagation

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* less inheritance

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* less inheritance

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* fix the build

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

src/math/lp/CMakeLists.txt

@@ -2,7 +2,6 @@ z3_add_component(lp
   SOURCES
     binary_heap_priority_queue.cpp
     binary_heap_upair_queue.cpp
-    lp_bound_propagator.cpp
     core_solver_pretty_printer.cpp
     dense_matrix.cpp
     eta_matrix.cpp

src/math/lp/bound_analyzer_on_row.h

@@ -24,14 +24,13 @@ Revision History:
 
 #include "util/vector.h"
 #include "math/lp/implied_bound.h"
-#include "math/lp/lp_bound_propagator.h"
 #include "math/lp/test_bound_analyzer.h"
 
 namespace lp {
-template <typename C> // C plays a role of a container
+template <typename C, typename B> // C plays a role of a container, B - lp_bound_propagator
 class bound_analyzer_on_row {
     const C&                           m_row;
-    lp_bound_propagator &              m_bp;
+    B &                                m_bp;
     unsigned                           m_row_or_term_index;
     int                                m_column_of_u; // index of an unlimited from above monoid
     // -1 means that such a value is not found, -2 means that at least two of such monoids were found
@@ -45,7 +44,7 @@ public :
         unsigned  bj, // basis column for the row
         const numeric_pair<mpq>& rs,
         unsigned row_or_term_index,
-        lp_bound_propagator & bp)
+        B & bp)
         :
         m_row(it),
         m_bp(bp),
@@ -55,11 +54,12 @@ public :
         m_rs(rs)
     {}
 
+    
     static void analyze_row(const C & row,
                             unsigned bj, // basis column for the row
                             const numeric_pair<mpq>& rs,
                             unsigned row_or_term_index,
-                            lp_bound_propagator & bp) {
+                            B & bp) {
         bound_analyzer_on_row a(row, bj, rs, row_or_term_index, bp);
         a.analyze();
         // TBD: a.analyze_eq();

src/math/lp/lar_solver.cpp

@@ -135,23 +135,6 @@ bool lar_solver::implied_bound_is_correctly_explained(implied_bound const & be,
     return kind == be.kind() && rs_of_evidence == be.m_bound;
 }
 
-    
-void lar_solver::analyze_new_bounds_on_row(
-    unsigned row_index,
-    lp_bound_propagator & bp) {
-    lp_assert(!use_tableau());
-    unsigned j =  m_mpq_lar_core_solver.m_r_basis[row_index]; // basis column for the row
-
-    
-    bound_analyzer_on_row<indexed_vector<mpq>>::analyze_row(
-        m_mpq_lar_core_solver.get_pivot_row(),
-        j,
-        zero_of_type<numeric_pair<mpq>>(),
-        row_index,
-        bp
-                                                            );
-//    ra_pos.analyze();
-}
 
 bool lar_solver::row_has_a_big_num(unsigned i) const {
     for (const auto& c : A_r().m_rows[i]) {
@@ -161,23 +144,6 @@ bool lar_solver::row_has_a_big_num(unsigned i) const {
     return false;
 }
 
-void lar_solver::analyze_new_bounds_on_row_tableau(
-    unsigned row_index,
-    lp_bound_propagator & bp ) {
-
-    if (A_r().m_rows[row_index].size() > settings().max_row_length_for_bound_propagation
-        || row_has_a_big_num(row_index))
-        return;
-    lp_assert(use_tableau());
-
-    bound_analyzer_on_row<row_strip<mpq>>::analyze_row(A_r().m_rows[row_index],
-                                       null_ci,
-                                       zero_of_type<numeric_pair<mpq>>(),
-                                       row_index,
-                                       bp
-                                       );
-}
-
     
 void lar_solver::substitute_basis_var_in_terms_for_row(unsigned i) {
     // todo : create a map from term basic vars to the rows where they are used
@@ -190,16 +156,6 @@ void lar_solver::substitute_basis_var_in_terms_for_row(unsigned i) {
         m_terms[k]->subst(basis_j, m_mpq_lar_core_solver.m_r_solver.m_pivot_row);
     }
 }
-    
-void lar_solver::calculate_implied_bounds_for_row(unsigned i, lp_bound_propagator & bp) {
-    if (use_tableau()) {
-        analyze_new_bounds_on_row_tableau(i, bp);
-    } else {
-        m_mpq_lar_core_solver.calculate_pivot_row(i);
-        substitute_basis_var_in_terms_for_row(i);
-        analyze_new_bounds_on_row(i, bp);
-    }
-}
 
 unsigned lar_solver::adjust_column_index_to_term_index(unsigned j) const {
     if (!tv::is_term(j)) {
@@ -213,64 +169,12 @@ unsigned lar_solver::map_term_index_to_column_index(unsigned j) const {
     SASSERT(tv::is_term(j));
     return m_var_register.external_to_local(j);
 }
-    
-void lar_solver::propagate_bounds_on_a_term(const lar_term& t, lp_bound_propagator & bp, unsigned term_offset) {
-    lp_assert(false); // not implemented
-}
-
-
-void lar_solver::explain_implied_bound(implied_bound & ib, lp_bound_propagator & bp) {
-    unsigned i = ib.m_row_or_term_index;
-    int bound_sign = ib.m_is_lower_bound? 1: -1;
-    int j_sign = (ib.m_coeff_before_j_is_pos ? 1 :-1) * bound_sign;
-    unsigned bound_j = ib.m_j;
-    if (tv::is_term(bound_j)) {
-        bound_j = m_var_register.external_to_local(bound_j);
-    }
-    for (auto const& r : A_r().m_rows[i]) {
-        unsigned j = r.var();
-        if (j == bound_j) continue;
-        mpq const& a = r.coeff();
-        int a_sign = is_pos(a)? 1: -1;
-        int sign = j_sign * a_sign;
-        const ul_pair & ul =  m_columns_to_ul_pairs[j];
-        auto witness = sign > 0? ul.upper_bound_witness(): ul.lower_bound_witness();
-        lp_assert(is_valid(witness));
-        bp.consume(a, witness);
-    }
-    // lp_assert(implied_bound_is_correctly_explained(ib, explanation));
-}
 
 // here i is just the term index
 bool lar_solver::term_is_used_as_row(unsigned i) const {
     SASSERT(i < m_terms.size());
     return m_var_register.external_is_used(tv::mask_term(i));
 }
-    
-void lar_solver::propagate_bounds_on_terms(lp_bound_propagator & bp) {
-    for (unsigned i = 0; i < m_terms.size(); i++) {
-        if (term_is_used_as_row(i))
-            continue; // this term is used a left side of a constraint,
-        // it was processed as a touched row if needed
-        propagate_bounds_on_a_term(*m_terms[i], bp, i);
-    }
-}
-
-// goes over touched rows and tries to induce bounds
-void lar_solver::propagate_bounds_for_touched_rows(lp_bound_propagator & bp) {
-    if (!use_tableau())
-        return; // todo: consider to remove the restriction
-    
-    for (unsigned i : m_rows_with_changed_bounds) {
-        calculate_implied_bounds_for_row(i, bp);
-        if (settings().get_cancel_flag())
-            return;
-    }
-    m_rows_with_changed_bounds.clear();
-    if (!use_tableau()) {
-        propagate_bounds_on_terms(bp);
-    }
-}
 
 lp_status lar_solver::get_status() const { return m_status; }
 

src/math/lp/lar_solver.h

@@ -41,8 +41,8 @@
 #include "math/lp/conversion_helper.h"
 #include "math/lp/int_solver.h"
 #include "math/lp/nra_solver.h"
-#include "math/lp/lp_bound_propagator.h"
 #include "math/lp/lp_types.h"
+#include "math/lp/lp_bound_propagator.h"
 
 namespace lp {
 
@@ -161,15 +161,53 @@ class lar_solver : public column_namer {
     bool use_lu() const;
     bool sizes_are_correct() const;
     bool implied_bound_is_correctly_explained(implied_bound const & be, const vector<std::pair<mpq, unsigned>> & explanation) const;
+    template <typename T>
     void analyze_new_bounds_on_row(
         unsigned row_index,
-        lp_bound_propagator & bp);
+        lp_bound_propagator<T>& bp) {
+        lp_assert(!use_tableau());
+        unsigned j =  m_mpq_lar_core_solver.m_r_basis[row_index]; // basis column for the row
+        bound_analyzer_on_row<indexed_vector<mpq>, lp_bound_propagator<T>>::analyze_row(
+            m_mpq_lar_core_solver.get_pivot_row(),
+            j,
+            zero_of_type<numeric_pair<mpq>>(),
+            row_index,
+            bp);
+    }
+
+    template <typename T>
     void analyze_new_bounds_on_row_tableau(
         unsigned row_index,
-        lp_bound_propagator & bp);
+        lp_bound_propagator<T> & bp ) {
+        
+        if (A_r().m_rows[row_index].size() > settings().max_row_length_for_bound_propagation
+            || row_has_a_big_num(row_index))
+            return;
+        lp_assert(use_tableau());
+        
+        bound_analyzer_on_row<row_strip<mpq>, lp_bound_propagator<T>>::analyze_row(A_r().m_rows[row_index],
+                                                                                   null_ci,
+                                                                                   zero_of_type<numeric_pair<mpq>>(),
+                                                                                   row_index,
+                                                                                   bp
+                                                                                   );
+    }
+
     void substitute_basis_var_in_terms_for_row(unsigned i);
-    void calculate_implied_bounds_for_row(unsigned i, lp_bound_propagator & bp);    
-    void propagate_bounds_on_a_term(const lar_term& t, lp_bound_propagator & bp, unsigned term_offset);
+    template <typename T>
+    void calculate_implied_bounds_for_row(unsigned i, lp_bound_propagator<T> & bp) {
+        if (use_tableau()) {
+            analyze_new_bounds_on_row_tableau(i, bp);
+        } else {
+            m_mpq_lar_core_solver.calculate_pivot_row(i);
+            substitute_basis_var_in_terms_for_row(i);
+            analyze_new_bounds_on_row(i, bp);
+        }
+    }
+    template <typename T>
+    void propagate_bounds_on_a_term(const lar_term& t, lp_bound_propagator<T> & bp, unsigned term_offset) {
+        NOT_IMPLEMENTED_YET();
+    }
     static void clean_popped_elements(unsigned n, u_set& set);
     static void shrink_inf_set_after_pop(unsigned n, u_set & set);
     bool maximize_term_on_tableau(const lar_term & term,
@@ -282,12 +320,55 @@ public:
     void get_infeasibility_explanation(explanation &) const;
     inline void backup_x() { m_backup_x = m_mpq_lar_core_solver.m_r_x; }
     inline void restore_x() { m_mpq_lar_core_solver.m_r_x = m_backup_x; }
-    void explain_implied_bound(implied_bound & ib, lp_bound_propagator & bp);
+    template <typename T>
+    void explain_implied_bound(implied_bound & ib, lp_bound_propagator<T> & bp) {
+        unsigned i = ib.m_row_or_term_index;
+        int bound_sign = ib.m_is_lower_bound? 1: -1;
+        int j_sign = (ib.m_coeff_before_j_is_pos ? 1 :-1) * bound_sign;
+        unsigned bound_j = ib.m_j;
+        if (tv::is_term(bound_j)) {
+            bound_j = m_var_register.external_to_local(bound_j);
+        }
+        for (auto const& r : A_r().m_rows[i]) {
+            unsigned j = r.var();
+            if (j == bound_j) continue;
+            mpq const& a = r.coeff();
+            int a_sign = is_pos(a)? 1: -1;
+            int sign = j_sign * a_sign;
+            const ul_pair & ul =  m_columns_to_ul_pairs[j];
+            auto witness = sign > 0? ul.upper_bound_witness(): ul.lower_bound_witness();
+            lp_assert(is_valid(witness));
+            bp.consume(a, witness);
+        }
+    }
+    // lp_assert(implied_bound_is_correctly_explained(ib, explanation)); }
     constraint_index mk_var_bound(var_index j, lconstraint_kind kind, const mpq & right_side);
     void activate(constraint_index ci);
     void random_update(unsigned sz, var_index const * vars);
-    void propagate_bounds_on_terms(lp_bound_propagator & bp);
-    void propagate_bounds_for_touched_rows(lp_bound_propagator & bp);    
+    template <typename T>
+    void propagate_bounds_on_terms(lp_bound_propagator<T> & bp) {
+        for (unsigned i = 0; i < m_terms.size(); i++) {
+            if (term_is_used_as_row(i))
+                continue; // this term is used a left side of a constraint,
+            // it was processed as a touched row if needed
+            propagate_bounds_on_a_term(*m_terms[i], bp, i);
+        }
+    }
+    template <typename T>
+    void propagate_bounds_for_touched_rows(lp_bound_propagator<T> & bp) {
+        if (!use_tableau())
+            return; // todo: consider to remove the restriction
+        
+        for (unsigned i : m_rows_with_changed_bounds) {
+            calculate_implied_bounds_for_row(i, bp);
+            if (settings().get_cancel_flag())
+                return;
+        }
+        m_rows_with_changed_bounds.clear();
+        if (!use_tableau()) {
+            propagate_bounds_on_terms(bp);
+        }
+    }
     bool is_fixed(column_index const& j) const { return column_is_fixed(j); }
     inline column_index to_column_index(unsigned v) const { return column_index(external_to_column_index(v)); }
     bool external_is_used(unsigned) const;

src/math/lp/lp_bound_propagator.cpp

@@ -1,54 +0,0 @@
-/*
-  Copyright (c) 2017 Microsoft Corporation
-  Author: Lev Nachmanson
-*/
-#include "math/lp/lar_solver.h"
-namespace lp {
-lp_bound_propagator::lp_bound_propagator(lar_solver & ls):
-    m_lar_solver(ls) {}
-column_type lp_bound_propagator::get_column_type(unsigned j) const {
-    return m_lar_solver.get_column_type(j);
-}
-const impq & lp_bound_propagator::get_lower_bound(unsigned j) const {
-    return m_lar_solver.get_lower_bound(j);
-}
-const impq & lp_bound_propagator::get_upper_bound(unsigned j) const {
-    return m_lar_solver.get_upper_bound(j);
-}
-void lp_bound_propagator::try_add_bound(mpq const& v, unsigned j, bool is_low, bool coeff_before_j_is_pos, unsigned row_or_term_index, bool strict) {
-    j = m_lar_solver.adjust_column_index_to_term_index(j);    
-
-    lconstraint_kind kind = is_low? GE : LE;
-    if (strict)
-        kind = static_cast<lconstraint_kind>(kind / 2);
-    
-    if (!bound_is_interesting(j, kind, v))
-        return;
-     unsigned k; // index to ibounds
-     if (is_low) {
-         if (try_get_value(m_improved_lower_bounds, j, k)) {
-             auto & found_bound = m_ibounds[k];
-             if (v > found_bound.m_bound || (v == found_bound.m_bound && found_bound.m_strict == false && strict)) {
-                 found_bound = implied_bound(v, j, is_low, coeff_before_j_is_pos, row_or_term_index, strict);
-                 TRACE("try_add_bound", m_lar_solver.print_implied_bound(found_bound, tout););
-             }
-         } else {
-             m_improved_lower_bounds[j] = m_ibounds.size();
-             m_ibounds.push_back(implied_bound(v, j, is_low, coeff_before_j_is_pos, row_or_term_index, strict));
-             TRACE("try_add_bound", m_lar_solver.print_implied_bound(m_ibounds.back(), tout););
-         }
-     } else { // the upper bound case
-         if (try_get_value(m_improved_upper_bounds, j, k)) {
-             auto & found_bound = m_ibounds[k];
-             if (v < found_bound.m_bound || (v == found_bound.m_bound && found_bound.m_strict == false && strict)) {
-                 found_bound = implied_bound(v, j, is_low, coeff_before_j_is_pos, row_or_term_index, strict);
-                 TRACE("try_add_bound", m_lar_solver.print_implied_bound(found_bound, tout););
-             }
-         } else {
-             m_improved_upper_bounds[j] = m_ibounds.size();
-             m_ibounds.push_back(implied_bound(v, j, is_low, coeff_before_j_is_pos, row_or_term_index, strict));
-             TRACE("try_add_bound", m_lar_solver.print_implied_bound(m_ibounds.back(), tout););
-        }
-     }
-}
-}

src/math/lp/lp_bound_propagator.h

@@ -5,24 +5,65 @@
 #pragma once
 #include "math/lp/lp_settings.h"
 namespace lp {
-class lar_solver;
+template <typename T>
 class lp_bound_propagator {
     std::unordered_map<unsigned, unsigned> m_improved_lower_bounds; // these maps map a column index to the corresponding index in ibounds
     std::unordered_map<unsigned, unsigned> m_improved_upper_bounds;
-    lar_solver & m_lar_solver;
+    T& m_imp;
 public:
     vector<implied_bound> m_ibounds;
-public:
-    lp_bound_propagator(lar_solver & ls);
-    column_type get_column_type(unsigned) const;
-    const impq & get_lower_bound(unsigned) const;
-    const impq & get_upper_bound(unsigned) const;
-    void try_add_bound(mpq const & v, unsigned j, bool is_low, bool coeff_before_j_is_pos, unsigned row_or_term_index, bool strict);
-    void try_add_eq(lpvar x, lpvar y, unsigned row_or_term_index) {} // TBD
-    virtual bool bound_is_interesting(unsigned vi,
-                                      lp::lconstraint_kind kind,
-                                      const rational & bval) {return true;}
-    unsigned number_of_found_bounds() const { return m_ibounds.size(); }
-    virtual void consume(mpq const& v, lp::constraint_index j) = 0;
+    lp_bound_propagator(T& imp): m_imp(imp) {}
+    column_type get_column_type(unsigned j) const {
+        return m_imp.lp().get_column_type(j);
+    }
+    
+    const impq & get_lower_bound(unsigned j) const {
+        return m_imp.lp().get_lower_bound(j);
+    }
+
+    const impq & get_upper_bound(unsigned j) const {
+        return m_imp.lp().get_upper_bound(j);
+    }
+    
+    void try_add_bound(mpq const& v, unsigned j, bool is_low, bool coeff_before_j_is_pos, unsigned row_or_term_index, bool strict) {
+        j = m_imp.lp().adjust_column_index_to_term_index(j);    
+
+        lconstraint_kind kind = is_low? GE : LE;
+        if (strict)
+            kind = static_cast<lconstraint_kind>(kind / 2);
+    
+        if (!m_imp.bound_is_interesting(j, kind, v))
+            return;
+        unsigned k; // index to ibounds
+        if (is_low) {
+            if (try_get_value(m_improved_lower_bounds, j, k)) {
+                auto & found_bound = m_ibounds[k];
+                if (v > found_bound.m_bound || (v == found_bound.m_bound && found_bound.m_strict == false && strict)) {
+                    found_bound = implied_bound(v, j, is_low, coeff_before_j_is_pos, row_or_term_index, strict);
+                    TRACE("try_add_bound", m_imp.lp().print_implied_bound(found_bound, tout););
+                }
+            } else {
+                m_improved_lower_bounds[j] = m_ibounds.size();
+                m_ibounds.push_back(implied_bound(v, j, is_low, coeff_before_j_is_pos, row_or_term_index, strict));
+                TRACE("try_add_bound", m_imp.lp().print_implied_bound(m_ibounds.back(), tout););
+            }
+        } else { // the upper bound case
+            if (try_get_value(m_improved_upper_bounds, j, k)) {
+                auto & found_bound = m_ibounds[k];
+                if (v < found_bound.m_bound || (v == found_bound.m_bound && found_bound.m_strict == false && strict)) {
+                    found_bound = implied_bound(v, j, is_low, coeff_before_j_is_pos, row_or_term_index, strict);
+                    TRACE("try_add_bound", m_imp.lp().print_implied_bound(found_bound, tout););
+                }
+            } else {
+                m_improved_upper_bounds[j] = m_ibounds.size();
+                m_ibounds.push_back(implied_bound(v, j, is_low, coeff_before_j_is_pos, row_or_term_index, strict));
+                TRACE("try_add_bound", m_imp.lp().print_implied_bound(m_ibounds.back(), tout););
+            }
+        }
+    }
+
+    void consume(const mpq& a, constraint_index ci) {
+        m_imp.consume(a, ci);
+    }
 };
 }

src/smt/theory_lra.cpp

@@ -328,9 +328,6 @@ class theory_lra::imp {
     enode* get_enode(expr* e) const { return ctx().get_enode(e); }
     expr*  get_owner(theory_var v) const { return get_enode(v)->get_owner(); }        
 
-    lp::lar_solver& lp(){ return *m_solver.get(); }
-    const lp::lar_solver& lp() const { return *m_solver.get(); }
-    
     void init_solver() {
         if (m_solver) return;
 
@@ -969,6 +966,9 @@ public:
         std::for_each(m_internalize_states.begin(), m_internalize_states.end(), delete_proc<internalize_state>());
     }
 
+    lp::lar_solver& lp(){ return *m_solver.get(); }
+    const lp::lar_solver& lp() const { return *m_solver.get(); }    
+ 
     void init() {
         if (m_solver) return;
 
@@ -2311,10 +2311,34 @@ public:
     //     }
     // }
 
+    bool bound_is_interesting(unsigned vi, lp::lconstraint_kind kind, const rational & bval)  {
+        theory_var v = lp().local_to_external(vi);
+        if (v == null_theory_var) {
+            return false;
+        }
+        if (m_bounds.size() <= static_cast<unsigned>(v) || m_unassigned_bounds[v] == 0) {
+            return false;
+        }
+        for (lp_api::bound* b : m_bounds[v]) {
+            if (ctx().get_assignment(b->get_bv()) == l_undef &&
+                null_literal != is_bound_implied(kind, bval, *b)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    void consume(rational const& v, lp::constraint_index j) {
+        set_evidence(j, m_core, m_eqs);
+        m_explanation.add_pair(j, v);
+    }
+
+    
     void propagate_bounds_with_lp_solver() {
         if (!should_propagate()) 
             return;
-        local_bound_propagator bp(*this);
+        
+        lp::lp_bound_propagator<imp>  bp(*this);
 
         lp().propagate_bounds_for_touched_rows(bp);
 
@@ -2348,26 +2372,6 @@ public:
         }
         return false;
     }
-
-    struct local_bound_propagator: public lp::lp_bound_propagator {
-        imp & m_imp;
-        local_bound_propagator(imp& i) : lp_bound_propagator(*i.m_solver), m_imp(i) {}
-
-        bool bound_is_interesting(unsigned j, lp::lconstraint_kind kind, const rational & v) override {
-            return m_imp.bound_is_interesting(j, kind, v);
-        }
-
-        void add_eq(lpvar u, lpvar v, lp::explanation const& e) {
-            m_imp.add_eq(u, v, e);
-        }
-
-        void consume(rational const& v, lp::constraint_index j) override {
-            m_imp.set_evidence(j, m_imp.m_core, m_imp.m_eqs);
-            m_imp.m_explanation.add_pair(j, v);
-        }
-    };
-
-        
     void propagate_lp_solver_bound(lp::implied_bound& be) {
         lpvar vi = be.m_j;
         theory_var v = lp().local_to_external(vi);
@@ -2400,7 +2404,7 @@ public:
                 first = false;
                 reset_evidence();
                 m_explanation.clear();
-                local_bound_propagator bp(*this);
+                lp::lp_bound_propagator<imp> bp(*this);
                 lp().explain_implied_bound(be, bp);
             }
             CTRACE("arith", m_unassigned_bounds[v] == 0, tout << "missed bound\n";);
@@ -4024,7 +4028,9 @@ theory_var theory_lra::add_objective(app* term) {
 expr_ref theory_lra::mk_ge(generic_model_converter& fm, theory_var v, inf_rational const& val) {
     return m_imp->mk_ge(fm, v, val);
 }
-
-
-
 }
+template  class lp::lp_bound_propagator<smt::theory_lra::imp>;
+template void lp::lar_solver::propagate_bounds_for_touched_rows<smt::theory_lra::imp>(lp::lp_bound_propagator<smt::theory_lra::imp>&);
+template void lp::lar_solver::explain_implied_bound<smt::theory_lra::imp>(lp::implied_bound&, lp::lp_bound_propagator<smt::theory_lra::imp>&);
+template void lp::lar_solver::calculate_implied_bounds_for_row<smt::theory_lra::imp>(unsigned int, lp::lp_bound_propagator<smt::theory_lra::imp>&);
+template void lp::lar_solver::propagate_bounds_on_terms<smt::theory_lra::imp>(lp::lp_bound_propagator<smt::theory_lra::imp>&);

src/smt/theory_lra.h

@@ -24,7 +24,9 @@ Revision History:
 
 namespace smt {
     class theory_lra : public theory, public theory_opt {
+    public:
         class imp;
+    private:
         imp* m_imp;
 
     public:

src/test/lp/lp.cpp

@@ -313,11 +313,6 @@ void test_cn() {
 namespace lp {
 unsigned seed = 1;
 
-class my_bound_propagator : public lp_bound_propagator {
-public:
-    my_bound_propagator(lar_solver & ls): lp_bound_propagator(ls) {}
-    void consume(mpq const& v, lp::constraint_index j) override {}
-};
 
 random_gen g_rand;
 static unsigned my_random() {