Tabs, formatting.

src/api/dll/dll.cpp

@@ -15,16 +15,16 @@ Copyright (c) 2015 Microsoft Corporation
 BOOL APIENTRY DllMain( HMODULE hModule,
                        DWORD  ul_reason_for_call,
                        LPVOID lpReserved
-					 )
+                     )
 {
-	switch (ul_reason_for_call)
+    switch (ul_reason_for_call)
-	{
+    {
-	case DLL_PROCESS_ATTACH:
+    case DLL_PROCESS_ATTACH:
-	case DLL_THREAD_ATTACH:
+    case DLL_THREAD_ATTACH:
-	case DLL_THREAD_DETACH:
+    case DLL_THREAD_DETACH:
-	case DLL_PROCESS_DETACH:
+    case DLL_PROCESS_DETACH:
-		break;
+        break;
-	}
+    }
     return TRUE;
 }
 

src/api/ml/z3native_stubs.h

@@ -36,5 +36,5 @@ Notes:
     #define DLL_LOCAL
   #endif
 #endif
-	
+    
 #endif

src/ast/fpa/fpa2bv_converter.cpp

@@ -3332,18 +3332,18 @@ void fpa2bv_converter::mk_to_bv(func_decl * f, unsigned num, expr * const * args
     dbg_decouple("fpa2bv_to_bv_inc", inc);
     dbg_decouple("fpa2bv_to_bv_pre_rounded", pre_rounded);
 
-	pre_rounded = m.mk_ite(x_is_neg, m_bv_util.mk_bv_neg(pre_rounded), pre_rounded);
+    pre_rounded = m.mk_ite(x_is_neg, m_bv_util.mk_bv_neg(pre_rounded), pre_rounded);
 
-	expr_ref ll(m), ul(m), in_range(m);
+    expr_ref ll(m), ul(m), in_range(m);
     if (!is_signed) {
-		ll = m_bv_util.mk_numeral(0, bv_sz+3);
+        ll = m_bv_util.mk_numeral(0, bv_sz+3);
         ul = m_bv_util.mk_zero_extend(3, m_bv_util.mk_numeral(-1, bv_sz));
     }
     else {
         ll = m_bv_util.mk_sign_extend(3, m_bv_util.mk_concat(bv1, m_bv_util.mk_numeral(0, bv_sz-1)));
         ul = m_bv_util.mk_zero_extend(4, m_bv_util.mk_numeral(-1, bv_sz-1));
     }
-	in_range = m.mk_and(m_bv_util.mk_sle(ll, pre_rounded), m_bv_util.mk_sle(pre_rounded, ul));
+    in_range = m.mk_and(m_bv_util.mk_sle(ll, pre_rounded), m_bv_util.mk_sle(pre_rounded, ul));
     dbg_decouple("fpa2bv_to_bv_in_range", in_range);
 
     expr_ref rounded(m);

src/ast/rewriter/bit2int.h

@@ -75,7 +75,7 @@ protected:
     bool mk_mul(expr* a, expr* b, expr_ref& result);
     bool mk_comp(eq_type ty, expr* e1, expr* e2, expr_ref& result);
     bool mk_add(expr* e1, expr* e2, expr_ref& result);
-	
+
     expr * get_cached(expr * n) const;
     bool is_cached(expr * n) const {  return get_cached(n) != 0; }
     void cache_result(expr * n, expr * r);

src/ast/rewriter/bv_bounds.h

@@ -38,7 +38,7 @@ public:
     bv_bounds(ast_manager& m) : m_m(m), m_bv_util(m), m_okay(true) {};
     ~bv_bounds();
 public: // bounds addition methods
-	br_status rewrite(unsigned limit, func_decl * f, unsigned num, expr * const * args, expr_ref& result);
+    br_status rewrite(unsigned limit, func_decl * f, unsigned num, expr * const * args, expr_ref& result);
 
     /** \brief Add a constraint to the system.
 
@@ -82,7 +82,7 @@ protected:
     bv_util                   m_bv_util;
     bool                      m_okay;
     bool                      is_sat(app * v);
-	bool                      is_sat_core(app * v);
+bool                      is_sat_core(app * v);
     inline bool               in_range(app *v, numeral l);
     inline bool               is_constant_add(unsigned bv_sz, expr * e, app*& v, numeral& val);
     void                      record_singleton(app * v,  numeral& singleton_value);
@@ -94,7 +94,7 @@ protected:
 inline bool bv_bounds::is_okay() { return m_okay; }
 
 inline bool bv_bounds::to_bound(const expr * e) const {
-	return is_app(e) && m_bv_util.is_bv(e)
+    return is_app(e) && m_bv_util.is_bv(e)
        && !m_bv_util.is_bv_add(e)
        && !m_bv_util.is_numeral(e);
 }

src/duality/duality.h

@@ -21,6 +21,7 @@
 #pragma once
 
 #include "duality/duality_wrapper.h"
+#include <vector>
 #include <list>
 #include <map>
 
@@ -41,9 +42,9 @@ namespace Duality {
         typedef expr Term;
 
     Z3User(context &_ctx) : ctx(_ctx){}
-  
+
         const char *string_of_int(int n);
-      
+
         Term conjoin(const std::vector<Term> &args);
 
         Term sum(const std::vector<Term> &args);
@@ -130,58 +131,58 @@ namespace Duality {
 
     /** This class represents a relation post-fixed point (RPFP) problem as
      *  a "problem graph". The graph consists of Nodes and hyper-edges.
-     * 
+     *
      * A node consists of
      * - Annotation, a symbolic relation
      * - Bound, a symbolic relation giving an upper bound on Annotation
-     * 
+     *
      *
      * A hyper-edge consists of:
      *  - Children, a sequence of children Nodes,
      *  - F, a symbolic relational transformer,
      *  - Parent, a single parent Node.
-     *  
+     *
      * The graph is "solved" when:
      * - For every Node n, n.Annotation subseteq n.Bound
      * - For every hyperedge e, e.F(e.Children.Annotation) subseteq e.Parent.Annotation
-     * 
+     *
      * where, if x is a sequence of Nodes, x.Annotation is the sequences
      * of Annotations of the nodes in the sequence.
-     * 
+     *
      * A symbolic Transformer consists of
      * - RelParams, a sequence of relational symbols
      * - IndParams, a sequence of individual symbols
      * - Formula, a formula over RelParams and IndParams
-     * 
+     *
      * A Transformer t represents a function that takes sequence R of relations
      * and yields the relation lambda (t.Indparams). Formula(R/RelParams).
-     * 
+     *
      * As a special case, a nullary Transformer (where RelParams is the empty sequence)
      * represents a fixed relation.
-     * 
+     *
      * An RPFP consists of
      * - Nodes, a set of Nodes
      * - Edges, a set of hyper-edges
      * - Context, a prover context that contains formula AST's
-     *  
+     *
      * Multiple RPFP's can use the same Context, but you should be careful
-     * that only one RPFP asserts constraints in the context at any time. 
+     * that only one RPFP asserts constraints in the context at any time.
-     * 
+     *
      *  */
     class RPFP : public Z3User
     {
     public:
-      
+
         class Edge;
         class Node;
         bool HornClauses;
 
-      
+
         /** Interface class for interpolating solver. */
 
         class LogicSolver {
         public:
-           
+
             context *ctx;   /** Z3 context for formulas */
             solver *slvr;   /** Z3 solver */
             bool need_goals; /** Can the solver use the goal tree to optimize interpolants? */
@@ -191,7 +192,7 @@ namespace Duality {
                 "assumptions" are currently asserted in the solver. The return
                 value indicates whether the assertions are satisfiable. In the
                 UNSAT case, a tree interpolant is returned in "interpolants".
-                In the SAT case, a model is returned. 
+                In the SAT case, a model is returned.
             */
 
             virtual
@@ -201,7 +202,7 @@ namespace Duality {
                                        TermTree *goals = 0,
                                        bool weak = false
                                        ) = 0;
-           
+
             /** Declare a constant in the background theory. */
             virtual void declare_constant(const func_decl &f) = 0;
 
@@ -319,7 +320,7 @@ namespace Duality {
             virtual void declare_constant(const func_decl &f){
                 bckg.insert(f);
             }
-	
+
             /** Is this a background constant? */
             virtual bool is_constant(const func_decl &f){
                 return bckg.find(f) != bckg.end();
@@ -344,9 +345,9 @@ namespace Duality {
         static iZ3LogicSolver *CreateLogicSolver(config &_config){
             return new iZ3LogicSolver(_config);
         }
-#endif      
+#endif
 
-        /** Create a logic solver from a low-level Z3 context. 
+        /** Create a logic solver from a low-level Z3 context.
             Only use this if you know what you're doing. */
         static iZ3LogicSolver *CreateLogicSolver(context c){
             return new iZ3LogicSolver(c);
@@ -357,7 +358,7 @@ namespace Duality {
     protected:
         int nodeCount;
         int edgeCount;
-      
+
         class stack_entry
         {
         public:
@@ -365,8 +366,8 @@ namespace Duality {
             std::list<Node *> nodes;
             std::list<std::pair<Edge *,Term> > constraints;
         };
-      
+
-      
+
     public:
         model dualModel;
     protected:
@@ -375,14 +376,14 @@ namespace Duality {
         std::vector<Term> axioms; // only saved here for printing purposes
         solver &aux_solver;
         hash_set<ast> *proof_core;
-      
+
     public:
 
         /** Construct an RPFP graph with a given interpolating prover context. It is allowed to
             have multiple RPFP's use the same context, but you should never have teo RPFP's
             with the same conext asserting nodes or edges at the same time. Note, if you create
             axioms in one RPFP, them create a second RPFP with the same context, the second will
-            inherit the axioms. 
+            inherit the axioms.
         */
 
     RPFP(LogicSolver *_ls) : Z3User(*(_ls->ctx)), dualModel(*(_ls->ctx)), aux_solver(_ls->aux_solver)
@@ -396,7 +397,7 @@ namespace Duality {
             }
 
         virtual ~RPFP();
-      
+
         /** Symbolic representation of a relational transformer */
         class Transformer
         {
@@ -406,12 +407,12 @@ namespace Duality {
             Term Formula;
             RPFP *owner;
             hash_map<std::string,Term> labels;
-	
+
             Transformer *Clone()
             {
                 return new Transformer(*this);
             }
-	
+
             void SetEmpty(){
                 Formula = owner->ctx.bool_val(false);
             }
@@ -451,7 +452,7 @@ namespace Duality {
             void Complement(){
                 Formula = !Formula;
             }
-	
+
             void Simplify(){
                 Formula = Formula.simplify();
             }
@@ -459,7 +460,7 @@ namespace Duality {
         Transformer(const std::vector<FuncDecl> &_RelParams, const std::vector<Term> &_IndParams, const Term &_Formula, RPFP *_owner)
             : RelParams(_RelParams), IndParams(_IndParams), Formula(_Formula) {owner = _owner;}
         };
-      
+
         /** Create a symbolic transformer. */
         Transformer CreateTransformer(const std::vector<FuncDecl> &_RelParams, const std::vector<Term> &_IndParams, const Term &_Formula)
         {
@@ -469,13 +470,13 @@ namespace Duality {
             // t.labels = foo.Item2;
             return Transformer(_RelParams,_IndParams,_Formula,this);
         }
-      
+
         /** Create a relation (nullary relational transformer) */
         Transformer CreateRelation(const std::vector<Term> &_IndParams, const Term &_Formula)
         {
             return CreateTransformer(std::vector<FuncDecl>(), _IndParams, _Formula);
         }
-      
+
         /** A node in the RPFP graph */
         class Node
         {
@@ -491,17 +492,17 @@ namespace Duality {
             Term dual;
             Node *map;
             unsigned recursion_bound;
-	
+
         Node(const FuncDecl &_Name, const Transformer &_Annotation, const Transformer &_Bound, const Transformer &_Underapprox, const Term &_dual, RPFP *_owner, int _number)
             : Name(_Name), Annotation(_Annotation), Bound(_Bound), Underapprox(_Underapprox), dual(_dual) {owner = _owner; number = _number; Outgoing = 0; recursion_bound = UINT_MAX;}
         };
-      
+
         /** Create a node in the graph. The input is a term R(v_1...v_n)
          *  where R is an arbitrary relational symbol and v_1...v_n are
          *  arbitary distinct variables. The names are only of mnemonic value,
          *  however, the number and type of arguments determine the type
          *  of the relation at this node. */
-      
+
         Node *CreateNode(const Term &t)
         {
             std::vector<Term> _IndParams;
@@ -517,9 +518,9 @@ namespace Duality {
             nodes.push_back(n);
             return n;
         }
-      
+
         /** Clone a node (can be from another graph).  */
-      
+
         Node *CloneNode(Node *old)
         {
             Node *n = new Node(old->Name,
@@ -534,7 +535,7 @@ namespace Duality {
             n->map = old;
             return n;
         }
-      
+
         /** Delete a node. You can only do this if not connected to any edges.*/
         void DeleteNode(Node *node){
             if(node->Outgoing || !node->Incoming.empty())
@@ -549,7 +550,7 @@ namespace Duality {
         }
 
         /** This class represents a hyper-edge in the RPFP graph */
-      
+
         class Edge
         {
         public:
@@ -565,15 +566,15 @@ namespace Duality {
             Edge *map;
             Term labeled;
             std::vector<Term> constraints;
-	
+
         Edge(Node *_Parent, const Transformer &_F, const std::vector<Node *> &_Children, RPFP *_owner, int _number)
             : F(_F), Parent(_Parent), Children(_Children), dual(expr(_owner->ctx)) {
                 owner = _owner;
                 number = _number;
             }
         };
-      
+
-        
+
         /** Create a hyper-edge. */
         Edge *CreateEdge(Node *_Parent, const Transformer &_F, const std::vector<Node *> &_Children)
         {
@@ -584,8 +585,8 @@ namespace Duality {
             edges.push_back(e);
             return e;
         }
-      
+
-      
+
         /** Delete a hyper-edge and unlink it from any nodes. */
         void DeleteEdge(Edge *edge){
             if(edge->Parent)
@@ -607,19 +608,19 @@ namespace Duality {
             }
             delete edge;
         }
-      
+
         /** Create an edge that lower-bounds its parent. */
         Edge *CreateLowerBoundEdge(Node *_Parent)
         {
             return CreateEdge(_Parent, _Parent->Annotation, std::vector<Node *>());
         }
-      
+
 
         /** For incremental solving, asserts the constraint associated
          * with this edge in the SMT context. If this edge is removed,
          * you must pop the context accordingly. The second argument is
          * the number of pushes we are inside. */
-      
+
         virtual void AssertEdge(Edge *e, int persist = 0, bool with_children = false, bool underapprox = false);
 
         /* Constrain an edge by the annotation of one of its children. */
@@ -629,19 +630,19 @@ namespace Duality {
         /** For incremental solving, asserts the negation of the upper bound associated
          * with a node.
          * */
-      
+
         void AssertNode(Node *n);
 
-        /** Assert a constraint on an edge in the SMT context. 
+        /** Assert a constraint on an edge in the SMT context.
          */
         void ConstrainEdge(Edge *e, const Term &t);
-      
+
         /** Fix the truth values of atomic propositions in the given
             edge to their values in the current assignment. */
         void FixCurrentState(Edge *root);
-    
+
         void FixCurrentStateFull(Edge *edge, const expr &extra);
-      
+
         void FixCurrentStateFull(Edge *edge, const std::vector<expr> &assumps, const hash_map<ast,expr> &renaming);
 
         /** Declare a constant in the background theory. */
@@ -660,78 +661,78 @@ namespace Duality {
 
 #if 0
         /** Do not call this. */
-      
+
         void RemoveAxiom(const Term &t);
 #endif
 
         /** Solve an RPFP graph. This means either strengthen the annotation
          *  so that the bound at the given root node is satisfied, or
-         *  show that this cannot be done by giving a dual solution 
+         *  show that this cannot be done by giving a dual solution
-         *  (i.e., a counterexample). 
+         *  (i.e., a counterexample).
-         *  
+         *
          * In the current implementation, this only works for graphs that
          * are:
          * - tree-like
-         * 
+         *
          * - closed.
-         * 
+         *
          * In a tree-like graph, every nod has out most one incoming and one out-going edge,
          * and there are no cycles. In a closed graph, every node has exactly one out-going
          * edge. This means that the leaves of the tree are all hyper-edges with no
          * children. Such an edge represents a relation (nullary transformer) and thus
          * a lower bound on its parent. The parameter root must be the root of this tree.
-         * 
+         *
          * If Solve returns LBool.False, this indicates success. The annotation of the tree
-         * has been updated to satisfy the upper bound at the root. 
+         * has been updated to satisfy the upper bound at the root.
-         * 
+         *
          * If Solve returns LBool.True, this indicates a counterexample. For each edge,
          * you can then call Eval to determine the values of symbols in the transformer formula.
          * You can also call Empty on a node to determine if its value in the counterexample
          * is the empty relation.
-         * 
+         *
          *    \param root The root of the tree
-         *    \param persist Number of context pops through which result should persist 
+         *    \param persist Number of context pops through which result should persist
-         * 
+         *
-         * 
+         *
          */
 
         lbool Solve(Node *root, int persist);
-      
+
         /** Same as Solve, but annotates only a single node. */
 
         lbool SolveSingleNode(Node *root, Node *node);
 
         /** Get the constraint tree (but don't solve it) */
-      
+
         TermTree *GetConstraintTree(Node *root, Node *skip_descendant = 0);
-  
+
         /** Dispose of the dual model (counterexample) if there is one. */
-      
+
         void DisposeDualModel();
 
         /** Check satisfiability of asserted edges and nodes. Same functionality as
-         * Solve, except no primal solution (interpolant) is generated in the unsat case. */ 
+         * Solve, except no primal solution (interpolant) is generated in the unsat case. */
-      
+
-        check_result Check(Node *root, std::vector<Node *> underapproxes = std::vector<Node *>(), 
+        check_result Check(Node *root, std::vector<Node *> underapproxes = std::vector<Node *>(),
                            std::vector<Node *> *underapprox_core = 0);
 
         /** Update the model, attempting to make the propositional literals in assumps true. If possible,
             return sat, else return unsat and keep the old model. */
-      
+
         check_result CheckUpdateModel(Node *root, std::vector<expr> assumps);
 
         /** Determines the value in the counterexample of a symbol occuring in the transformer formula of
          *  a given edge. */
-      
+
         Term Eval(Edge *e, Term t);
-	
+
         /** Return the fact derived at node p in a counterexample. */
 
         Term EvalNode(Node *p);
-    
+
         /** Returns true if the given node is empty in the primal solution. For proecudure summaries,
             this means that the procedure is not called in the current counter-model. */
-      
+
         bool Empty(Node *p);
 
         /** Compute an underapproximation of every node in a tree rooted at "root",
@@ -747,11 +748,11 @@ namespace Duality {
         void InterpolateByCases(Node *root, Node *node);
 
         /** Push a scope. Assertions made after Push can be undone by Pop. */
-      
+
         void Push();
 
         /** Exception thrown when bad clause is encountered */
-      
+
         struct bad_clause {
             std::string msg;
             int i;
@@ -777,7 +778,7 @@ namespace Duality {
         // thrown on internal error
         struct Bad {
         };
-      
+
         // thrown on more serious internal error
         struct ReallyBad {
         };
@@ -786,56 +787,56 @@ namespace Duality {
         struct greedy_reduce_failed {};
 
         /** Pop a scope (see Push). Note, you cannot pop axioms. */
-      
+
         void Pop(int num_scopes);
-      
+
         /** Erase the proof by performing a Pop, Push and re-assertion of
             all the popped constraints */
         void PopPush();
 
         /** Return true if the given edge is used in the proof of unsat.
             Can be called only after Solve or Check returns an unsat result. */
-      
+
         bool EdgeUsedInProof(Edge *edge);
 
 
         /** Convert a collection of clauses to Nodes and Edges in the RPFP.
-	  
+
             Predicate unknowns are uninterpreted predicates not
             occurring in the background theory.
-          
+
-            Clauses are of the form 
+            Clauses are of the form
-          
+
             B => P(t_1,...,t_k)
-	  
+
             where P is a predicate unknown and predicate unknowns
             occur only positivey in H and only under existential
             quantifiers in prenex form.
-	  
+
             Each predicate unknown maps to a node. Each clause maps to
             an edge. Let C be a clause B => P(t_1,...,t_k) where the
             sequence of predicate unknowns occurring in B (in order
             of occurrence) is P_1..P_n. The clause maps to a transformer
             T where:
-	  
+
             T.Relparams = P_1..P_n
             T.Indparams = x_1...x+k
             T.Formula = B /\ t_1 = x_1 /\ ... /\ t_k = x_k
-	  
+
             Throws exception bad_clause(msg,i) if a clause i is
             in the wrong form.
-	  
+
         */
-      
+
         struct label_struct {
             symbol name;
             expr value;
             bool pos;
-	label_struct(const symbol &s, const expr &e, bool b)
+            label_struct(const symbol &s, const expr &e, bool b)
-	: name(s), value(e), pos(b) {}
+                : name(s), value(e), pos(b) {}
         };
 
-      
+
 #ifdef _WINDOWS
         __declspec(dllexport)
 #endif
@@ -847,7 +848,7 @@ namespace Duality {
 
         void WriteCounterexample(std::ostream &s, Node *node);
 
-        enum FileFormat {DualityFormat, SMT2Format, HornFormat}; 
+        enum FileFormat {DualityFormat, SMT2Format, HornFormat};
 
         /** Write the RPFP to a file (currently in SMTLIB 1.2 format) */
         void WriteProblemToFile(std::string filename, FileFormat format = DualityFormat);
@@ -870,9 +871,9 @@ namespace Duality {
         /** Fuse a vector of transformers. If the total number of inputs of the transformers
             is N, then the result is an N-ary transfomer whose output is the union of
             the outputs of the given transformers. The is, suppose we have a vetor of transfoermers
-            {T_i(r_i1,...,r_iN(i) : i=1..M}. The the result is a transformer 
+            {T_i(r_i1,...,r_iN(i) : i=1..M}. The the result is a transformer
-	       
+
-            F(r_11,...,r_iN(1),...,r_M1,...,r_MN(M)) = 
+            F(r_11,...,r_iN(1),...,r_M1,...,r_MN(M)) =
             T_1(r_11,...,r_iN(1)) U ... U T_M(r_M1,...,r_MN(M))
         */
 
@@ -921,7 +922,7 @@ namespace Duality {
         }
 
     protected:
-      
+
         void ClearProofCore(){
             if(proof_core)
                 delete proof_core;
@@ -929,7 +930,7 @@ namespace Duality {
         }
 
         Term SuffixVariable(const Term &t, int n);
-      
+
         Term HideVariable(const Term &t, int n);
 
         void RedVars(Node *node, Term &b, std::vector<Term> &v);
@@ -958,16 +959,16 @@ namespace Duality {
 
 #if 0
         void WriteInterps(System.IO.StreamWriter f, TermTree t);
-#endif    
+#endif
 
         void WriteEdgeVars(Edge *e,  hash_map<ast,int> &memo, const Term &t, std::ostream &s);
 
         void WriteEdgeAssignment(std::ostream &s, Edge *e);
 
-    
+
         // Scan the clause body for occurrences of the predicate unknowns
-  
+
-        Term ScanBody(hash_map<ast,Term> &memo, 
+        Term ScanBody(hash_map<ast,Term> &memo,
                       const Term &t,
                       hash_map<func_decl,Node *> &pmap,
                       std::vector<func_decl> &res,
@@ -1035,7 +1036,7 @@ namespace Duality {
         void ConstrainEdgeLocalized(Edge *e, const Term &t);
 
         void GreedyReduce(solver &s, std::vector<expr> &conjuncts);
-      
+
         void NegateLits(std::vector<expr> &lits);
 
         expr SimplifyOr(std::vector<expr> &lits);
@@ -1053,7 +1054,7 @@ namespace Duality {
         void GetGroundLitsUnderQuants(hash_set<ast> *memo, const Term &f, std::vector<Term> &res, int under);
 
         Term StrengthenFormulaByCaseSplitting(const Term &f, std::vector<expr> &case_lits);
-    
+
         expr NegateLit(const expr &f);
 
         expr GetEdgeFormula(Edge *e, int persist, bool with_children, bool underapprox);
@@ -1065,7 +1066,7 @@ namespace Duality {
         expr UnhoistPullRec(hash_map<ast,expr> & memo, const expr &w, hash_map<ast,expr> & init_defs, hash_map<ast,expr> & const_params, hash_map<ast,expr> &const_params_inv, std::vector<expr> &new_params);
 
         void AddParamsToTransformer(Transformer &trans, const std::vector<expr> &params);
- 
+
         expr AddParamsToApp(const expr &app, const func_decl &new_decl, const std::vector<expr> &params);
 
         expr GetRelRec(hash_set<ast> &memo, const expr &t, const func_decl &rel);
@@ -1081,7 +1082,7 @@ namespace Duality {
         void UnhoistLoop(Edge *loop_edge, Edge *init_edge);
 
         void Unhoist();
-      
+
         Term ElimIteRec(hash_map<ast,expr> &memo, const Term &t, std::vector<expr> &cnsts);
 
         Term ElimIte(const Term &t);
@@ -1089,11 +1090,11 @@ namespace Duality {
         void MarkLiveNodes(hash_map<Node *,std::vector<Edge *> > &outgoing, hash_set<Node *> &live_nodes, Node *node);
 
         virtual void slvr_add(const expr &e);
-      
+
         virtual void slvr_pop(int i);
 
         virtual void slvr_push();
-      
+
         virtual check_result slvr_check(unsigned n = 0, expr * const assumptions = 0, unsigned *core_size = 0, expr *core = 0);
 
         virtual lbool ls_interpolate_tree(TermTree *assumptions,
@@ -1105,14 +1106,14 @@ namespace Duality {
         virtual bool proof_core_contains(const expr &e);
 
     };
-    
+
 
     /** RPFP solver base class. */
 
     class Solver {
-      
+
     public:
-      
+
         class Counterexample {
         private:
             RPFP *tree;
@@ -1148,18 +1149,18 @@ namespace Duality {
             Counterexample &operator=(const Counterexample &);
             Counterexample(const Counterexample &);
         };
-      
+
         /** Solve the problem. You can optionally give an old
             counterexample to use as a guide. This is chiefly useful for
             abstraction refinement metholdologies, and is only used as a
             heuristic. */
-      
+
         virtual bool Solve() = 0;
-      
+
         virtual Counterexample &GetCounterexample() = 0;
-      
+
         virtual bool SetOption(const std::string &option, const std::string &value) = 0;
-      
+
         /** Learn heuristic information from another solver. This
             is chiefly useful for abstraction refinement, when we want to
             solve a series of similar problems. */
@@ -1184,7 +1185,7 @@ namespace Duality {
 
         /** Object thrown on cancellation */
         struct Canceled {};
-      
+
         /** Object thrown on incompleteness */
         struct Incompleteness {};
     };
@@ -1235,16 +1236,16 @@ namespace Duality {
     public:
 
         /** appends assumption literals for edge to lits. if with_children is true,
-            includes that annotation of the edge's children. 
+            includes that annotation of the edge's children.
-        */ 
+        */
         void AssertEdgeCache(Edge *e, std::vector<Term> &lits, bool with_children = false);
-      
+
         /** appends assumption literals for node to lits */
         void AssertNodeCache(Node *, std::vector<Term> lits);
 
         /** check assumption lits, and return core */
         check_result CheckCore(const std::vector<Term> &assumps, std::vector<Term> &core);
-      
+
         /** Clone another RPFP into this one, keeping a map */
         void Clone(RPFP *other);
 
@@ -1287,7 +1288,7 @@ namespace Duality {
             uptr<solver> slvr;
         };
         hash_map<Edge *, edge_solver > edge_solvers;
-      
+
 #ifdef LIMIT_STACK_WEIGHT
         struct weight_counter {
             int val;
@@ -1296,7 +1297,7 @@ namespace Duality {
                 std::swap(val,other.val);
             }
         };
-      
+
         struct big_stack_entry {
             weight_counter weight_added;
             std::vector<expr> new_alits;
@@ -1319,11 +1320,11 @@ namespace Duality {
         void ConstrainEdgeLocalizedCache(Edge *e, const Term &tl, std::vector<expr> &lits);
 
         virtual void slvr_add(const expr &e);
-      
+
         virtual void slvr_pop(int i);
 
         virtual void slvr_push();
-      
+
         virtual check_result slvr_check(unsigned n = 0, expr * const assumptions = 0, unsigned *core_size = 0, expr *core = 0);
 
         virtual lbool ls_interpolate_tree(TermTree *assumptions,
@@ -1348,7 +1349,7 @@ namespace Duality {
             scoped_solver_for_edge(RPFP_caching *_rpfp, Edge *edge, bool models = false, bool axioms = false){
                 rpfp = _rpfp;
                 orig_slvr = rpfp->ls->slvr;
-                es = &(rpfp->SolverForEdge(edge,models,axioms)); 
+                es = &(rpfp->SolverForEdge(edge,models,axioms));
                 rpfp->ls->slvr = es->slvr.get();
                 rpfp->AssumptionLits.swap(es->AssumptionLits);
             }

src/duality/duality_wrapper.h

@@ -176,7 +176,7 @@ namespace Duality {
             m_datalog_fid = m().mk_family_id("datalog_relation");
         }
         ~context() { }
-      
+
         ast_manager &m() const {return *(ast_manager *)&mgr;}
 
         void set(char const * param, char const * value) { m_config.set(param,value); }
@@ -186,13 +186,13 @@ namespace Duality {
 
         symbol str_symbol(char const * s);
         symbol int_symbol(int n);
-      
+
         sort bool_sort();
         sort int_sort();
         sort real_sort();
         sort bv_sort(unsigned sz);
         sort array_sort(sort d, sort r);
-      
+
         func_decl function(symbol const & name, unsigned arity, sort const * domain, sort const & range);
         func_decl function(char const * name, unsigned arity, sort const * domain, sort const & range);
         func_decl function(char const * name, sort const & domain, sort const & range);
@@ -210,22 +210,22 @@ namespace Duality {
         expr int_const(char const * name);
         expr real_const(char const * name);
         expr bv_const(char const * name, unsigned sz);
-      
+
         expr bool_val(bool b);
-      
+
         expr int_val(int n);
         expr int_val(unsigned n);
         expr int_val(char const * n);
-      
+
         expr real_val(int n, int d);
         expr real_val(int n);
         expr real_val(unsigned n);
         expr real_val(char const * n);
-      
+
         expr bv_val(int n, unsigned sz);
         expr bv_val(unsigned n, unsigned sz);
         expr bv_val(char const * n, unsigned sz);
-      
+
         expr num_val(int n, sort const & s);
 
         expr mki(family_id fid, ::decl_kind dk, int n, ::expr **args);
@@ -281,17 +281,17 @@ namespace Duality {
     object(object const & s):m_ctx(s.m_ctx) {}
         context & ctx() const { return *m_ctx; }
         friend void check_context(object const & a, object const & b) { assert(a.m_ctx == b.m_ctx); }
-	ast_manager &m() const {return m_ctx->m();}
+        ast_manager &m() const {return m_ctx->m();}
     };
 
     class symbol : public object {
         ::symbol m_sym;
     public:
-    symbol(context & c, ::symbol s):object(c), m_sym(s) {}
+        symbol(context & c, ::symbol s):object(c), m_sym(s) {}
-    symbol(symbol const & s):object(s), m_sym(s.m_sym) {}
+        symbol(symbol const & s):object(s), m_sym(s.m_sym) {}
         symbol & operator=(symbol const & s) { m_ctx = s.m_ctx; m_sym = s.m_sym; return *this; }
-	operator ::symbol() const {return m_sym;} 
+        operator ::symbol() const {return m_sym;}
-	std::string str() const {
+        std::string str() const {
             if (m_sym.is_numerical()) {
                 std::ostringstream buffer;
                 buffer << m_sym.get_num();
@@ -300,13 +300,13 @@ namespace Duality {
             else {
                 return m_sym.bare_str();
             }
-	}
+        }
-        friend std::ostream & operator<<(std::ostream & out, symbol const & s){
+        friend std::ostream & operator<<(std::ostream & out, symbol const & s) {
             return out << s.str();
-	}
+        }
-	friend bool operator==(const symbol &x, const symbol &y){
+        friend bool operator==(const symbol &x, const symbol &y) {
             return x.m_sym == y.m_sym;
-	}
+        }
     };
 
     class params : public config {};
@@ -318,7 +318,7 @@ namespace Duality {
     public:
         ::ast * const &raw() const {return _ast;}
     ast_i(context & c, ::ast *a = 0) : object(c) {_ast = a;}
-      
+
         ast_i(){_ast = 0;}
         bool eq(const ast_i &other) const {
             return _ast == other._ast;
@@ -345,19 +345,19 @@ namespace Duality {
         operator ::ast*() const { return raw(); }
         friend bool eq(ast const & a, ast const & b) { return a.raw() == b.raw(); }
 
-      
+
     ast(context &c, ::ast *a = 0) : ast_i(c,a) {
             if(_ast)
                 m().inc_ref(a);
         }
-      
+
         ast() {}
-      
+
     ast(const ast &other) : ast_i(other) {
             if(_ast)
                 m().inc_ref(_ast);
         }
-      
+
         ast &operator=(const ast &other) {
             if(_ast)
                 m().dec_ref(_ast);
@@ -367,7 +367,7 @@ namespace Duality {
                 m().inc_ref(_ast);
             return *this;
         }
-      
+
         ~ast(){
             if(_ast)
                 m().dec_ref(_ast);
@@ -386,15 +386,15 @@ namespace Duality {
         sort & operator=(sort const & s) { return static_cast<sort&>(ast::operator=(s)); }
 
         bool is_bool() const { return m().is_bool(*this); }
-        bool is_int() const { return ctx().get_sort_kind(*this) == IntSort; } 
+        bool is_int() const { return ctx().get_sort_kind(*this) == IntSort; }
-        bool is_real() const { return ctx().get_sort_kind(*this) == RealSort; } 
+        bool is_real() const { return ctx().get_sort_kind(*this) == RealSort; }
         bool is_arith() const;
-        bool is_array() const { return ctx().get_sort_kind(*this) == ArraySort; } 
+        bool is_array() const { return ctx().get_sort_kind(*this) == ArraySort; }
-        bool is_datatype() const; 
+        bool is_datatype() const;
-        bool is_relation() const; 
+        bool is_relation() const;
-        bool is_finite_domain() const; 
+        bool is_finite_domain() const;
+
 
-      
         sort array_domain() const;
         sort array_range() const;
 
@@ -404,7 +404,7 @@ namespace Duality {
         }
     };
 
-    
+
     class func_decl : public ast {
     public:
     func_decl() : ast() {}
@@ -413,7 +413,7 @@ namespace Duality {
     func_decl(func_decl const & s):ast(s) {}
         operator ::func_decl*() const { return to_func_decl(*this); }
         func_decl & operator=(func_decl const & s) { return static_cast<func_decl&>(ast::operator=(s)); }
-        
+
         unsigned arity() const;
         sort domain(unsigned i) const;
         sort range() const;
@@ -434,9 +434,9 @@ namespace Duality {
         expr operator()(expr const & a1, expr const & a2, expr const & a3, expr const & a4) const;
         expr operator()(expr const & a1, expr const & a2, expr const & a3, expr const & a4, expr const & a5) const;
 
-	func_decl get_func_decl_parameter(unsigned idx){
+        func_decl get_func_decl_parameter(unsigned idx){
             return func_decl(ctx(),to_func_decl(to_func_decl(raw())->get_parameters()[idx].get_ast()));
-	}
+        }
 
     };
 
@@ -447,8 +447,8 @@ namespace Duality {
     expr(context & c, ::ast *n):ast(c, n) {}
     expr(expr const & n):ast(n) {}
         expr & operator=(expr const & n) { return static_cast<expr&>(ast::operator=(n)); }
-	operator ::expr*() const { return to_expr(raw()); }
+        operator ::expr*() const { return to_expr(raw()); }
-	unsigned get_id() const {return to_expr(raw())->get_id();}
+        unsigned get_id() const {return to_expr(raw())->get_id();}
 
         sort get_sort() const { return sort(ctx(),m().get_sort(to_expr(raw()))); }
 
@@ -460,27 +460,27 @@ namespace Duality {
         bool is_datatype() const { return get_sort().is_datatype(); }
         bool is_relation() const { return get_sort().is_relation(); }
         bool is_finite_domain() const { return get_sort().is_finite_domain(); }
-	bool is_true() const {return is_app() && decl().get_decl_kind() == True; }
+        bool is_true() const {return is_app() && decl().get_decl_kind() == True; }
 
         bool is_numeral() const {
             return is_app() && decl().get_decl_kind() == OtherArith && m().is_unique_value(to_expr(raw()));
-	}
+        }
-	bool is_app() const {return raw()->get_kind() == AST_APP;}
+        bool is_app() const {return raw()->get_kind() == AST_APP;}
         bool is_quantifier() const {return raw()->get_kind() == AST_QUANTIFIER;}
         bool is_var() const {return raw()->get_kind() == AST_VAR;}
-	bool is_label (bool &pos,std::vector<symbol> &names) const ;
+        bool is_label (bool &pos,std::vector<symbol> &names) const ;
-	bool is_ground() const {return to_app(raw())->is_ground();}
+        bool is_ground() const {return to_app(raw())->is_ground();}
-	bool has_quantifiers() const {return to_app(raw())->has_quantifiers();}
+        bool has_quantifiers() const {return to_app(raw())->has_quantifiers();}
-	bool has_free(int idx) const {
+        bool has_free(int idx) const {
             used_vars proc;
             proc.process(to_expr(raw()));
             return proc.contains(idx);
-	}
+        }
-	unsigned get_max_var_idx_plus_1() const {
+        unsigned get_max_var_idx_plus_1() const {
             used_vars proc;
             proc.process(to_expr(raw()));
             return proc.get_max_found_var_idx_plus_1();
-	}
+        }
 
         // operator Z3_app() const { assert(is_app()); return reinterpret_cast<Z3_app>(m_ast); }
         func_decl decl() const {return func_decl(ctx(),to_app(raw())->get_decl());}
@@ -493,11 +493,11 @@ namespace Duality {
                 return 1;
             case AST_VAR:
                 return 0;
-            default:;    
+            default:;
             }
             SASSERT(0);
             return 0;
-	}
+        }
         expr arg(unsigned i) const {
             ast_kind dk = raw()->get_kind();
             switch(dk){
@@ -509,25 +509,25 @@ namespace Duality {
             }
             assert(0);
             return expr();
-	}
+        }
 
         expr body() const {
             return ctx().cook(to_quantifier(raw())->get_expr());
-	}
+        }
 
         friend expr operator!(expr const & a) {
             // ::expr *e = a;
             return expr(a.ctx(),a.m().mk_app(a.m().get_basic_family_id(),OP_NOT,a));
-	}
+        }
 
         friend expr operator&&(expr const & a, expr const & b) {
             return expr(a.ctx(),a.m().mk_app(a.m().get_basic_family_id(),OP_AND,a,b));
-	}
+        }
 
         friend expr operator||(expr const & a, expr const & b) {
             return expr(a.ctx(),a.m().mk_app(a.m().get_basic_family_id(),OP_OR,a,b));
         }
-        
+
         friend expr implies(expr const & a, expr const & b) {
             return expr(a.ctx(),a.m().mk_app(a.m().get_basic_family_id(),OP_IMPLIES,a,b));
         }
@@ -546,12 +546,12 @@ namespace Duality {
 
         friend expr operator*(expr const & a, expr const & b) {
             return a.ctx().make(Times,a,b); // expr(a.ctx(),a.m().mk_app(a.m().get_basic_family_id(),OP_MUL,a,b));
-	}
+        }
 
         friend expr operator/(expr const & a, expr const & b) {
             return a.ctx().make(Div,a,b); //  expr(a.ctx(),a.m().mk_app(a.m().get_basic_family_id(),OP_DIV,a,b));
         }
-	
+
         friend expr operator-(expr const & a) {
             return a.ctx().make(Uminus,a); // expr(a.ctx(),a.m().mk_app(a.m().get_basic_family_id(),OP_UMINUS,a));
         }
@@ -562,71 +562,71 @@ namespace Duality {
 
         friend expr operator<=(expr const & a, expr const & b) {
             return a.ctx().make(Leq,a,b); // expr(a.ctx(),a.m().mk_app(a.m().get_basic_family_id(),OP_LE,a,b));
-	}
+        }
 
         friend expr operator>=(expr const & a, expr const & b) {
             return a.ctx().make(Geq,a,b); //expr(a.ctx(),a.m().mk_app(a.m().get_basic_family_id(),OP_GE,a,b));
         }
-	
+
         friend expr operator<(expr const & a, expr const & b) {
             return a.ctx().make(Lt,a,b); expr(a.ctx(),a.m().mk_app(a.m().get_basic_family_id(),OP_LT,a,b));
         }
-        
+
         friend expr operator>(expr const & a, expr const & b) {
             return a.ctx().make(Gt,a,b); expr(a.ctx(),a.m().mk_app(a.m().get_basic_family_id(),OP_GT,a,b));
-	}
+        }
 
         expr simplify() const;
 
         expr simplify(params const & p) const;
-	
+
         expr qe_lite() const;
 
-	expr qe_lite(const std::set<int> &idxs, bool index_of_bound) const;
+        expr qe_lite(const std::set<int> &idxs, bool index_of_bound) const;
 
-	friend expr clone_quantifier(const expr &, const expr &);
+        friend expr clone_quantifier(const expr &, const expr &);
 
         friend expr clone_quantifier(const expr &q, const expr &b, const std::vector<expr> &patterns);
 
-	friend expr clone_quantifier(decl_kind, const expr &, const expr &);
+        friend expr clone_quantifier(decl_kind, const expr &, const expr &);
 
         friend std::ostream & operator<<(std::ostream & out, expr const & m){
             m.ctx().print_expr(out,m);
             return out;
-	}
+        }
 
-	void get_patterns(std::vector<expr> &pats) const ;
+        void get_patterns(std::vector<expr> &pats) const ;
 
-	unsigned get_quantifier_num_bound() const {
+        unsigned get_quantifier_num_bound() const {
             return to_quantifier(raw())->get_num_decls();
-	}
+        }
 
-	unsigned get_index_value() const {
+        unsigned get_index_value() const {
             var* va = to_var(raw());
             return va->get_idx();
-	}
+        }
 
         bool is_quantifier_forall() const {
             return to_quantifier(raw())->is_forall();
-	}
+        }
 
-	sort get_quantifier_bound_sort(unsigned n) const {
+        sort get_quantifier_bound_sort(unsigned n) const {
             return sort(ctx(),to_quantifier(raw())->get_decl_sort(n));
-	}
+        }
 
-	symbol get_quantifier_bound_name(unsigned n) const {
+        symbol get_quantifier_bound_name(unsigned n) const {
             return symbol(ctx(),to_quantifier(raw())->get_decl_names()[n]);
-	}
+        }
 
-	friend expr forall(const std::vector<expr> &quants, const expr &body);
+        friend expr forall(const std::vector<expr> &quants, const expr &body);
 
-	friend expr exists(const std::vector<expr> &quants, const expr &body);
+        friend expr exists(const std::vector<expr> &quants, const expr &body);
 
     };
-    
+
 
     typedef ::decl_kind pfrule;
-    
+
     class proof : public ast {
     public:
     proof(context & c):ast(c) {}
@@ -643,15 +643,15 @@ namespace Duality {
         unsigned num_prems() const {
             return to_app(raw())->get_num_args() - 1;
         }
-      
+
         expr conc() const {
             return ctx().cook(to_app(raw())->get_arg(num_prems()));
         }
-      
+
         proof prem(unsigned i) const {
             return proof(ctx(),to_app(to_app(raw())->get_arg(i)));
         }
-      
+
         void get_assumptions(std::vector<expr> &assumps);
     };
 
@@ -675,12 +675,12 @@ namespace Duality {
         T back() const { return operator[](size() - 1); }
         void pop_back() { assert(size() > 0); resize(size() - 1); }
         bool empty() const { return size() == 0; }
-        ast_vector_tpl & operator=(ast_vector_tpl const & s) { 
+        ast_vector_tpl & operator=(ast_vector_tpl const & s) {
-            Z3_ast_vector_inc_ref(s.ctx(), s.m_vector); 
+            Z3_ast_vector_inc_ref(s.ctx(), s.m_vector);
             // Z3_ast_vector_dec_ref(ctx(), m_vector);
-            m_ctx = s.m_ctx; 
+            m_ctx = s.m_ctx;
             m_vector = s.m_vector;
-            return *this; 
+            return *this;
         }
         friend std::ostream & operator<<(std::ostream & out, ast_vector_tpl const & v) { out << Z3_ast_vector_to_string(v.ctx(), v); return out; }
     };
@@ -705,9 +705,9 @@ namespace Duality {
         ~func_interp() { }
         operator ::func_interp *() const { return m_interp; }
         func_interp & operator=(func_interp const & s) {
-            m_ctx = s.m_ctx; 
+            m_ctx = s.m_ctx;
             m_interp = s.m_interp;
-            return *this; 
+            return *this;
         }
         unsigned num_entries() const { return m_interp->num_entries(); }
         expr get_arg(unsigned ent, unsigned arg) const {
@@ -729,32 +729,32 @@ namespace Duality {
             m_model = m;
         }
     public:
-    model(context & c, ::model * m = 0):object(c), m_model(m) { }
+        model(context & c, ::model * m = 0):object(c), m_model(m) { }
-    model(model const & s):object(s), m_model(s.m_model) { }
+        model(model const & s):object(s), m_model(s.m_model) { }
-	~model() { }
+        ~model() { }
         operator ::model *() const { return m_model.get(); }
         model & operator=(model const & s) {
             // ::model *_inc_ref(s.ctx(), s.m_model);
             // ::model *_dec_ref(ctx(), m_model);
-            m_ctx = s.m_ctx; 
+            m_ctx = s.m_ctx;
             m_model = s.m_model.get();
-            return *this; 
+            return *this;
         }
         model & operator=(::model *s) {
-  	    m_model = s;
+            m_model = s;
-            return *this; 
+            return *this;
         }
-	bool null() const {return !m_model;}
+        bool null() const {return !m_model;}
-        
+
         expr eval(expr const & n, bool model_completion=true) const {
             ::model * _m = m_model.get();
             expr_ref result(ctx().m());
             _m->eval(n, result, model_completion);
             return expr(ctx(), result);
         }
-        
+
         void show() const;
-	void show_hash() const;
+        void show_hash() const;
 
         unsigned num_consts() const {return m_model.get()->get_num_constants();}
         unsigned num_funcs() const {return m_model.get()->get_num_functions();}
@@ -765,11 +765,11 @@ namespace Duality {
 
         expr get_const_interp(func_decl f) const {
             return ctx().cook(m_model->get_const_interp(to_func_decl(f.raw())));
-	}
+        }
 
         func_interp get_func_interp(func_decl f) const {
             return func_interp(ctx(),m_model->get_func_interp(to_func_decl(f.raw())));
-	} 
+        }
 
 #if 0
         friend std::ostream & operator<<(std::ostream & out, model const & m) { out << Z3_model_to_string(m.ctx(), m); return out; }
@@ -792,9 +792,9 @@ namespace Duality {
         stats & operator=(stats const & s) {
             Z3_stats_inc_ref(s.ctx(), s.m_stats);
             if (m_stats) Z3_stats_dec_ref(ctx(), m_stats);
-            m_ctx = s.m_ctx; 
+            m_ctx = s.m_ctx;
             m_stats = s.m_stats;
-            return *this; 
+            return *this;
         }
         unsigned size() const { return Z3_stats_size(ctx(), m_stats); }
         std::string key(unsigned i) const { Z3_string s = Z3_stats_get_key(ctx(), m_stats, i); check_error(); return s; }
@@ -820,7 +820,7 @@ namespace Duality {
         void assert_cnst(const expr &cnst);
     };
 
-    inline std::ostream & operator<<(std::ostream & out, check_result r) { 
+    inline std::ostream & operator<<(std::ostream & out, check_result r) {
         if (r == unsat) out << "unsat";
         else if (r == sat) out << "sat";
         else out << "unknown";
@@ -837,54 +837,54 @@ namespace Duality {
     protected:
         ::solver *m_solver;
         model the_model;
-	bool canceled;
+        bool canceled;
-	proof_gen_mode m_mode;
+        proof_gen_mode m_mode;
-	bool extensional;
+        bool extensional;
     public:
         solver(context & c, bool extensional = false, bool models = true);
-    solver(context & c, ::solver *s):object(c),the_model(c) { m_solver = s; canceled = false;}
+        solver(context & c, ::solver *s):object(c),the_model(c) { m_solver = s; canceled = false;}
-    solver(solver const & s):object(s), the_model(s.the_model) { m_solver = s.m_solver; canceled = false;}
+        solver(solver const & s):object(s), the_model(s.the_model) { m_solver = s.m_solver; canceled = false;}
         ~solver() {
             if(m_solver)
                 dealloc(m_solver);
-	}
-	operator ::solver*() const { return m_solver; }
-        solver & operator=(solver const & s) {
-            m_ctx = s.m_ctx; 
-            m_solver = s.m_solver;
-	    the_model = s.the_model;
-	    m_mode = s.m_mode;
-            return *this; 
         }
-	struct cancel_exception {};
+        operator ::solver*() const { return m_solver; }
-	void checkpoint(){
+        solver & operator=(solver const & s) {
+            m_ctx = s.m_ctx;
+            m_solver = s.m_solver;
+            the_model = s.the_model;
+            m_mode = s.m_mode;
+            return *this;
+        }
+        struct cancel_exception {};
+        void checkpoint(){
             if(canceled)
                 throw(cancel_exception());
-	}
+        }
         // void set(params const & p) { Z3_solver_set_params(ctx(), m_solver, p); check_error(); }
         void push() { scoped_proof_mode spm(m(),m_mode); m_solver->push(); }
         void pop(unsigned n = 1) { scoped_proof_mode spm(m(),m_mode); m_solver->pop(n); }
         // void reset() { Z3_solver_reset(ctx(), m_solver); check_error(); }
         void add(expr const & e) { scoped_proof_mode spm(m(),m_mode); m_solver->assert_expr(e); }
-        check_result check() { 
+        check_result check() {
-            scoped_proof_mode spm(m(),m_mode); 
+            scoped_proof_mode spm(m(),m_mode);
             checkpoint();
             lbool r = m_solver->check_sat(0,0);
             model_ref m;
             m_solver->get_model(m);
             the_model = m.get();
             return to_check_result(r);
-	}
+        }
-        check_result check_keep_model(unsigned n, expr * const assumptions, unsigned *core_size = 0, expr *core = 0) { 
+        check_result check_keep_model(unsigned n, expr * const assumptions, unsigned *core_size = 0, expr *core = 0) {
-            scoped_proof_mode spm(m(),m_mode); 
+            scoped_proof_mode spm(m(),m_mode);
             model old_model(the_model);
             check_result res = check(n,assumptions,core_size,core);
             if(the_model == 0)
                 the_model = old_model;
             return res;
-	}
+        }
         check_result check(unsigned n, expr * const assumptions, unsigned *core_size = 0, expr *core = 0) {
-            scoped_proof_mode spm(m(),m_mode); 
+            scoped_proof_mode spm(m(),m_mode);
             checkpoint();
             std::vector< ::expr *> _assumptions(n);
             for (unsigned i = 0; i < n; i++) {
@@ -892,7 +892,7 @@ namespace Duality {
             }
             the_model = 0;
             lbool r = m_solver->check_sat(n, VEC2PTR(_assumptions));
-	  
+
             if(core_size && core){
                 ptr_vector< ::expr> _core;
                 m_solver->get_unsat_core(_core);
@@ -905,20 +905,20 @@ namespace Duality {
             m_solver->get_model(m);
             the_model = m.get();
 
-            return to_check_result(r); 
+            return to_check_result(r);
         }
 #if 0
-        check_result check(expr_vector assumptions) { 
+        check_result check(expr_vector assumptions) {
-            scoped_proof_mode spm(m(),m_mode); 
+            scoped_proof_mode spm(m(),m_mode);
             unsigned n = assumptions.size();
             z3array<Z3_ast> _assumptions(n);
             for (unsigned i = 0; i < n; i++) {
                 check_context(*this, assumptions[i]);
                 _assumptions[i] = assumptions[i];
             }
-            Z3_lbool r = Z3_check_assumptions(ctx(), m_solver, n, _assumptions.ptr()); 
+            Z3_lbool r = Z3_check_assumptions(ctx(), m_solver, n, _assumptions.ptr());
-            check_error(); 
+            check_error();
-            return to_check_result(r); 
+            return to_check_result(r);
         }
 #endif
         model get_model() const { return model(ctx(), the_model); }
@@ -930,27 +930,26 @@ namespace Duality {
 #endif
         // expr proof() const { Z3_ast r = Z3_solver_proof(ctx(), m_solver); check_error(); return expr(ctx(), r); }
         // friend std::ostream & operator<<(std::ostream & out, solver const & s) { out << Z3_solver_to_string(s.ctx(), s); return out; }
-	
+        int get_num_decisions();
-	int get_num_decisions(); 
 
-	void cancel(){
+        void cancel(){
-            scoped_proof_mode spm(m(),m_mode); 
+            scoped_proof_mode spm(m(),m_mode);
             canceled = true;
             m().limit().cancel();
-	}
+        }
 
-	unsigned get_scope_level(){ scoped_proof_mode spm(m(),m_mode); return m_solver->get_scope_level();}
+        unsigned get_scope_level(){ scoped_proof_mode spm(m(),m_mode); return m_solver->get_scope_level();}
 
-	void show();
+        void show();
-	void print(const char *filename);
+        void print(const char *filename);
-	void show_assertion_ids();
+        void show_assertion_ids();
 
-	proof get_proof(){
+        proof get_proof(){
-            scoped_proof_mode spm(m(),m_mode); 
+            scoped_proof_mode spm(m(),m_mode);
             return proof(ctx(),m_solver->get_proof());
-	}
+        }
 
-	bool extensional_array_theory() {return extensional;}
+        bool extensional_array_theory() {return extensional;}
     };
 
 #if 0
@@ -969,20 +968,20 @@ namespace Duality {
         goal & operator=(goal const & s) {
             Z3_goal_inc_ref(s.ctx(), s.m_goal);
             Z3_goal_dec_ref(ctx(), m_goal);
-            m_ctx = s.m_ctx; 
+            m_ctx = s.m_ctx;
             m_goal = s.m_goal;
-            return *this; 
+            return *this;
         }
         void add(expr const & f) { check_context(*this, f); Z3_goal_assert(ctx(), m_goal, f); check_error(); }
         unsigned size() const { return Z3_goal_size(ctx(), m_goal); }
         expr operator[](unsigned i) const { Z3_ast r = Z3_goal_formula(ctx(), m_goal, i); check_error(); return expr(ctx(), r); }
         Z3_goal_prec precision() const { return Z3_goal_precision(ctx(), m_goal); }
         bool inconsistent() const { return Z3_goal_inconsistent(ctx(), m_goal) != 0; }
-        unsigned depth() const { return Z3_goal_depth(ctx(), m_goal); } 
+        unsigned depth() const { return Z3_goal_depth(ctx(), m_goal); }
         void reset() { Z3_goal_reset(ctx(), m_goal); }
         unsigned num_exprs() const { Z3_goal_num_exprs(ctx(), m_goal); }
-        bool is_decided_sat() const { return Z3_goal_is_decided_sat(ctx(), m_goal) != 0; }        
+        bool is_decided_sat() const { return Z3_goal_is_decided_sat(ctx(), m_goal) != 0; }
-        bool is_decided_unsat() const { return Z3_goal_is_decided_unsat(ctx(), m_goal) != 0; }        
+        bool is_decided_unsat() const { return Z3_goal_is_decided_unsat(ctx(), m_goal) != 0; }
         friend std::ostream & operator<<(std::ostream & out, goal const & g) { out << Z3_goal_to_string(g.ctx(), g); return out; }
     };
 
@@ -1000,15 +999,15 @@ namespace Duality {
         apply_result & operator=(apply_result const & s) {
             Z3_apply_result_inc_ref(s.ctx(), s.m_apply_result);
             Z3_apply_result_dec_ref(ctx(), m_apply_result);
-            m_ctx = s.m_ctx; 
+            m_ctx = s.m_ctx;
             m_apply_result = s.m_apply_result;
-            return *this; 
+            return *this;
         }
         unsigned size() const { return Z3_apply_result_get_num_subgoals(ctx(), m_apply_result); }
         goal operator[](unsigned i) const { Z3_goal r = Z3_apply_result_get_subgoal(ctx(), m_apply_result, i); check_error(); return goal(ctx(), r); }
         goal operator[](int i) const { assert(i >= 0); return this->operator[](static_cast<unsigned>(i)); }
-        model convert_model(model const & m, unsigned i = 0) const { 
+        model convert_model(model const & m, unsigned i = 0) const {
-            check_context(*this, m); 
+            check_context(*this, m);
             Z3_model new_m = Z3_apply_result_convert_model(ctx(), m_apply_result, i, m);
             check_error();
             return model(ctx(), new_m);
@@ -1031,16 +1030,16 @@ namespace Duality {
         tactic & operator=(tactic const & s) {
             Z3_tactic_inc_ref(s.ctx(), s.m_tactic);
             Z3_tactic_dec_ref(ctx(), m_tactic);
-            m_ctx = s.m_ctx; 
+            m_ctx = s.m_ctx;
             m_tactic = s.m_tactic;
-            return *this; 
+            return *this;
         }
         solver mk_solver() const { Z3_solver r = Z3_mk_solver_from_tactic(ctx(), m_tactic); check_error(); return solver(ctx(), r);  }
-        apply_result apply(goal const & g) const { 
+        apply_result apply(goal const & g) const {
             check_context(*this, g);
-            Z3_apply_result r = Z3_tactic_apply(ctx(), m_tactic, g); 
+            Z3_apply_result r = Z3_tactic_apply(ctx(), m_tactic, g);
-            check_error(); 
+            check_error();
-            return apply_result(ctx(), r); 
+            return apply_result(ctx(), r);
         }
         apply_result operator()(goal const & g) const {
             return apply(g);
@@ -1091,45 +1090,45 @@ namespace Duality {
         probe & operator=(probe const & s) {
             Z3_probe_inc_ref(s.ctx(), s.m_probe);
             Z3_probe_dec_ref(ctx(), m_probe);
-            m_ctx = s.m_ctx; 
+            m_ctx = s.m_ctx;
             m_probe = s.m_probe;
-            return *this; 
+            return *this;
         }
         double apply(goal const & g) const { double r = Z3_probe_apply(ctx(), m_probe, g); check_error(); return r; }
         double operator()(goal const & g) const { return apply(g); }
-        friend probe operator<=(probe const & p1, probe const & p2) { 
+        friend probe operator<=(probe const & p1, probe const & p2) {
-            check_context(p1, p2); Z3_probe r = Z3_probe_le(p1.ctx(), p1, p2); p1.check_error(); return probe(p1.ctx(), r); 
+            check_context(p1, p2); Z3_probe r = Z3_probe_le(p1.ctx(), p1, p2); p1.check_error(); return probe(p1.ctx(), r);
         }
         friend probe operator<=(probe const & p1, double p2) { return p1 <= probe(p1.ctx(), p2); }
         friend probe operator<=(double p1, probe const & p2) { return probe(p2.ctx(), p1) <= p2; }
-        friend probe operator>=(probe const & p1, probe const & p2) { 
+        friend probe operator>=(probe const & p1, probe const & p2) {
-            check_context(p1, p2); Z3_probe r = Z3_probe_ge(p1.ctx(), p1, p2); p1.check_error(); return probe(p1.ctx(), r); 
+            check_context(p1, p2); Z3_probe r = Z3_probe_ge(p1.ctx(), p1, p2); p1.check_error(); return probe(p1.ctx(), r);
         }
         friend probe operator>=(probe const & p1, double p2) { return p1 >= probe(p1.ctx(), p2); }
         friend probe operator>=(double p1, probe const & p2) { return probe(p2.ctx(), p1) >= p2; }
-        friend probe operator<(probe const & p1, probe const & p2) { 
+        friend probe operator<(probe const & p1, probe const & p2) {
-            check_context(p1, p2); Z3_probe r = Z3_probe_lt(p1.ctx(), p1, p2); p1.check_error(); return probe(p1.ctx(), r); 
+            check_context(p1, p2); Z3_probe r = Z3_probe_lt(p1.ctx(), p1, p2); p1.check_error(); return probe(p1.ctx(), r);
         }
         friend probe operator<(probe const & p1, double p2) { return p1 < probe(p1.ctx(), p2); }
         friend probe operator<(double p1, probe const & p2) { return probe(p2.ctx(), p1) < p2; }
-        friend probe operator>(probe const & p1, probe const & p2) { 
+        friend probe operator>(probe const & p1, probe const & p2) {
-            check_context(p1, p2); Z3_probe r = Z3_probe_gt(p1.ctx(), p1, p2); p1.check_error(); return probe(p1.ctx(), r); 
+            check_context(p1, p2); Z3_probe r = Z3_probe_gt(p1.ctx(), p1, p2); p1.check_error(); return probe(p1.ctx(), r);
         }
         friend probe operator>(probe const & p1, double p2) { return p1 > probe(p1.ctx(), p2); }
         friend probe operator>(double p1, probe const & p2) { return probe(p2.ctx(), p1) > p2; }
-        friend probe operator==(probe const & p1, probe const & p2) { 
+        friend probe operator==(probe const & p1, probe const & p2) {
-            check_context(p1, p2); Z3_probe r = Z3_probe_eq(p1.ctx(), p1, p2); p1.check_error(); return probe(p1.ctx(), r); 
+            check_context(p1, p2); Z3_probe r = Z3_probe_eq(p1.ctx(), p1, p2); p1.check_error(); return probe(p1.ctx(), r);
         }
         friend probe operator==(probe const & p1, double p2) { return p1 == probe(p1.ctx(), p2); }
         friend probe operator==(double p1, probe const & p2) { return probe(p2.ctx(), p1) == p2; }
-        friend probe operator&&(probe const & p1, probe const & p2) { 
+        friend probe operator&&(probe const & p1, probe const & p2) {
-            check_context(p1, p2); Z3_probe r = Z3_probe_and(p1.ctx(), p1, p2); p1.check_error(); return probe(p1.ctx(), r); 
+            check_context(p1, p2); Z3_probe r = Z3_probe_and(p1.ctx(), p1, p2); p1.check_error(); return probe(p1.ctx(), r);
         }
-        friend probe operator||(probe const & p1, probe const & p2) { 
+        friend probe operator||(probe const & p1, probe const & p2) {
-            check_context(p1, p2); Z3_probe r = Z3_probe_or(p1.ctx(), p1, p2); p1.check_error(); return probe(p1.ctx(), r); 
+            check_context(p1, p2); Z3_probe r = Z3_probe_or(p1.ctx(), p1, p2); p1.check_error(); return probe(p1.ctx(), r);
         }
         friend probe operator!(probe const & p) {
-            Z3_probe r = Z3_probe_not(p.ctx(), p); p.check_error(); return probe(p.ctx(), r); 
+            Z3_probe r = Z3_probe_not(p.ctx(), p); p.check_error(); return probe(p.ctx(), r);
         }
     };
 
@@ -1159,15 +1158,15 @@ namespace Duality {
     inline symbol context::int_symbol(int n) { ::symbol r = ::symbol(n); return symbol(*this, r); }
 
     inline sort context::bool_sort() {
-        ::sort *s = m().mk_sort(m_basic_fid, BOOL_SORT); 
+        ::sort *s = m().mk_sort(m_basic_fid, BOOL_SORT);
         return sort(*this, s);
     }
     inline sort context::int_sort()  {
-        ::sort *s = m().mk_sort(m_arith_fid, INT_SORT); 
+        ::sort *s = m().mk_sort(m_arith_fid, INT_SORT);
         return sort(*this, s);
     }
     inline sort context::real_sort()  {
-        ::sort *s = m().mk_sort(m_arith_fid, REAL_SORT); 
+        ::sort *s = m().mk_sort(m_arith_fid, REAL_SORT);
         return sort(*this, s);
     }
     inline sort context::array_sort(sort d, sort r) {
@@ -1188,7 +1187,7 @@ namespace Duality {
     inline func_decl context::function(char const * name, unsigned arity, sort const * domain, sort const & range) {
         return function(str_symbol(name), arity, domain, range);
     }
-    
+
     inline func_decl context::function(char const * name, sort const & domain, sort const & range) {
         sort args[1] = { domain };
         return function(name, 1, args, range);
@@ -1196,7 +1195,7 @@ namespace Duality {
 
     inline func_decl context::function(char const * name, sort const & d1, sort const & d2, sort const & range) {
         sort args[2] = { d1, d2 };
-	return function(name, 2, args, range);
+        return function(name, 2, args, range);
     }
 
     inline func_decl context::function(char const * name, sort const & d1, sort const & d2, sort const & d3, sort const & range) {
@@ -1208,7 +1207,7 @@ namespace Duality {
         sort args[4] = { d1, d2, d3, d4 };
         return function(name, 4, args, range);
     }
-    
+
     inline func_decl context::function(char const * name, sort const & d1, sort const & d2, sort const & d3, sort const & d4, sort const & d5, sort const & range) {
         sort args[5] = { d1, d2, d3, d4, d5 };
         return function(name, 5, args, range);
@@ -1217,7 +1216,7 @@ namespace Duality {
 
     inline expr context::constant(symbol const & name, sort const & s) {
         ::expr *r = m().mk_const(m().mk_const_decl(name, s));
-        return expr(*this, r); 
+        return expr(*this, r);
     }
     inline expr context::constant(char const * name, sort const & s) { return constant(str_symbol(name), s); }
     inline expr context::bool_const(char const * name) { return constant(name, bool_sort()); }
@@ -1250,11 +1249,11 @@ namespace Duality {
         expr args[5] = {a1,a2,a3,a4,a5};
         return operator()(5,args);
     }
-    
+
-    
+
     inline expr select(expr const & a, expr const & i) { return a.ctx().make(Select,a,i); }
     inline expr store(expr const & a, expr const & i, expr const & v) { return a.ctx().make(Store,a,i,v); }
-    
+
     inline expr forall(const std::vector<expr> &quants, const expr &body){
         return body.ctx().make_quant(Forall,quants,body);
     }
@@ -1304,7 +1303,7 @@ namespace Duality {
         }
 
         inline void setTerm(expr t){term = t;}
-      
+
         inline void addTerm(expr t){terms.push_back(t);}
 
         inline void setChildren(const std::vector<TermTree *> & _children){
@@ -1326,7 +1325,7 @@ namespace Duality {
         std::vector<TermTree *> children;
         int num;
     };
-    
+
     typedef context interpolating_context;
 
     class interpolating_solver : public solver {
@@ -1336,7 +1335,7 @@ namespace Duality {
             {
                 weak_mode = false;
             }
-      
+
     public:
         lbool interpolate(const std::vector<expr> &assumptions,
                           std::vector<expr> &interpolants,
@@ -1344,41 +1343,41 @@ namespace Duality {
                           literals &lits,
                           bool incremental
                           );
-      
+
         lbool interpolate_tree(TermTree *assumptions,
                                TermTree *&interpolants,
                                model &_model,
                                literals &lits,
                                bool incremental
                                );
-      
+
         bool read_interpolation_problem(const std::string &file_name,
                                         std::vector<expr> &assumptions,
                                         std::vector<expr> &theory,
                                         std::string &error_message
                                         );
-      
+
         void write_interpolation_problem(const std::string &file_name,
                                          const std::vector<expr> &assumptions,
                                          const std::vector<expr> &theory
                                          );
-      
+
         void AssertInterpolationAxiom(const expr &expr);
         void RemoveInterpolationAxiom(const expr &expr);
-      
+
         void SetWeakInterpolants(bool weak);
         void SetPrintToFile(const std::string &file_name);
-      
+
         const std::vector<expr> &GetInterpolationAxioms() {return theory;}
         const char *profile();
-      
+
     private:
         bool weak_mode;
         std::string print_filename;
         std::vector<expr> theory;
     };
-    
+
-    
+
     inline expr context::cook(::expr *a) {return expr(*this,a);}
 
     inline std::vector<expr> context::cook(ptr_vector< ::expr> v) {

src/interp/iz3base.h

@@ -66,35 +66,35 @@ class iz3base : public iz3mgr, public scopes {
 
     /** Constructor */
 
- iz3base(ast_manager &_m_manager,
+    iz3base(ast_manager &_m_manager,
-	 const std::vector<ast> &_cnsts,
+            const std::vector<ast> &_cnsts,
-	 const std::vector<int> &_parents,
+            const std::vector<int> &_parents,
-	 const std::vector<ast> &_theory)
+            const std::vector<ast> &_theory)
-     : iz3mgr(_m_manager), scopes(_parents)  {
+        : iz3mgr(_m_manager), scopes(_parents)  {
         initialize(_cnsts,_parents,_theory);
         weak = false;
     }
 
- iz3base(const iz3mgr& other,
+    iz3base(const iz3mgr& other,
-	 const std::vector<ast> &_cnsts,
+            const std::vector<ast> &_cnsts,
-	 const std::vector<int> &_parents,
+            const std::vector<int> &_parents,
-	 const std::vector<ast> &_theory)
+            const std::vector<ast> &_theory)
-     : iz3mgr(other), scopes(_parents)  {
+        : iz3mgr(other), scopes(_parents)  {
         initialize(_cnsts,_parents,_theory);
         weak = false;
     }
 
- iz3base(const iz3mgr& other,
+    iz3base(const iz3mgr& other,
-         const std::vector<std::vector<ast> > &_cnsts,
+            const std::vector<std::vector<ast> > &_cnsts,
-	 const std::vector<int> &_parents,
+            const std::vector<int> &_parents,
-	 const std::vector<ast> &_theory)
+            const std::vector<ast> &_theory)
-     : iz3mgr(other), scopes(_parents)  {
+        : iz3mgr(other), scopes(_parents)  {
         initialize(_cnsts,_parents,_theory);
         weak = false;
     }
 
- iz3base(const iz3mgr& other)
+    iz3base(const iz3mgr& other)
-     : iz3mgr(other), scopes()  {
+        : iz3mgr(other), scopes()  {
         weak = false;
     }
 

src/interp/iz3checker.h

@@ -24,26 +24,26 @@
 #include "solver/solver.h"
 
 bool iz3check(ast_manager &_m_manager,
-	      solver *s,
+              solver *s,
-	      std::ostream &err,
+              std::ostream &err,
-	      const ptr_vector<ast> &cnsts,
+              const ptr_vector<ast> &cnsts,
-	      const ::vector<int> &parents,
+              const ::vector<int> &parents,
-	      const ptr_vector<ast> &interps,
+              const ptr_vector<ast> &interps,
-	      const ptr_vector<ast> &theory);
+              const ptr_vector<ast> &theory);
 
 bool iz3check(ast_manager &_m_manager,
-	      solver *s,
+              solver *s,
-	      std::ostream &err,
+              std::ostream &err,
-	      const ptr_vector<ast> &cnsts,
+              const ptr_vector<ast> &cnsts,
-	      ast *tree,
+              ast *tree,
-	      const ptr_vector<ast> &interps);
+              const ptr_vector<ast> &interps);
 
 bool iz3check(iz3mgr &mgr,
-	      solver *s,
+              solver *s,
-	      std::ostream &err,
+              std::ostream &err,
-	      const std::vector<iz3mgr::ast> &cnsts,
+              const std::vector<iz3mgr::ast> &cnsts,
-	      const std::vector<int> &parents,
+              const std::vector<int> &parents,
-	      const std::vector<iz3mgr::ast> &interps,
+              const std::vector<iz3mgr::ast> &interps,
-	      const ptr_vector<iz3mgr::ast> &theory);
+              const ptr_vector<iz3mgr::ast> &theory);
 
 #endif

src/interp/iz3hash.h

@@ -468,10 +468,10 @@ namespace hash_space {
     : hashtable<std::pair<Key,Value>,Key,HashFun,proj1<Key,Value>,EqFun>(7) {}
 
     Value &operator[](const Key& key) {
-	std::pair<Key,Value> kvp(key,Value());
+        std::pair<Key,Value> kvp(key,Value());
-	return 
+        return 
-	hashtable<std::pair<Key,Value>,Key,HashFun,proj1<Key,Value>,EqFun>::
+            hashtable<std::pair<Key,Value>,Key,HashFun,proj1<Key,Value>,EqFun>::
-        lookup(kvp,true)->val.second;
+            lookup(kvp,true)->val.second;
     }
     };
 

src/interp/iz3interp.h

@@ -73,22 +73,22 @@ typedef interpolation_options_struct *interpolation_options;
    representation, for compatibility with the old API. */
 
 void iz3interpolate(ast_manager &_m_manager,
-		    ast *proof,
+                    ast *proof,
-		    const ptr_vector<ast> &cnsts,
+                    const ptr_vector<ast> &cnsts,
-		    const ::vector<int> &parents,
+                    const ::vector<int> &parents,
-		    ptr_vector<ast> &interps,
+                    ptr_vector<ast> &interps,
-		    const ptr_vector<ast> &theory,
+                    const ptr_vector<ast> &theory,
-		    interpolation_options_struct * options = 0);
+                    interpolation_options_struct * options = 0);
 
 /* Same as above, but each constraint is a vector of formulas. */
 
 void iz3interpolate(ast_manager &_m_manager,
-		    ast *proof,
+                    ast *proof,
-		    const vector<ptr_vector<ast> > &cnsts,
+                    const vector<ptr_vector<ast> > &cnsts,
-		    const ::vector<int> &parents,
+                    const ::vector<int> &parents,
-		    ptr_vector<ast> &interps,
+                    ptr_vector<ast> &interps,
-		    const ptr_vector<ast> &theory,
+                    const ptr_vector<ast> &theory,
-		    interpolation_options_struct * options = 0);
+                    interpolation_options_struct * options = 0);
 
 /* Compute an interpolant from a proof. This version uses the ast
    representation, for compatibility with the new API. Here, cnsts is
@@ -98,11 +98,11 @@ void iz3interpolate(ast_manager &_m_manager,
    proof, so it can be considered a hint.  */
 
 void iz3interpolate(ast_manager &_m_manager,
-		    ast *proof,
+                    ast *proof,
-		    const ptr_vector<ast> &cnsts,
+                    const ptr_vector<ast> &cnsts,
-		    ast *tree,
+                    ast *tree,
-		    ptr_vector<ast> &interps,
+                    ptr_vector<ast> &interps,
-		    interpolation_options_struct * options);
+                    interpolation_options_struct * options);
 
 
 /* Compute an interpolant from an ast representing an interpolation
@@ -112,12 +112,12 @@ void iz3interpolate(ast_manager &_m_manager,
 */
 
 lbool iz3interpolate(ast_manager &_m_manager,
-		     solver &s,
+                     solver &s,
-		     ast *tree,
+                     ast *tree,
-		     ptr_vector<ast> &cnsts,
+                     ptr_vector<ast> &cnsts,
-		     ptr_vector<ast> &interps,
+                     ptr_vector<ast> &interps,
-		     model_ref &m,
+                     model_ref &m,
-		     interpolation_options_struct * options);
+                     interpolation_options_struct * options);
 
 
 #endif

src/interp/iz3pp.h

@@ -30,7 +30,7 @@ struct iz3pp_bad_tree: public iz3_exception {
 };
 
 void iz3pp(ast_manager &m,
-	   const ptr_vector<expr> &cnsts_vec,
+           const ptr_vector<expr> &cnsts_vec,
-	   expr *tree,
+           expr *tree,
-	   std::ostream& out);
+           std::ostream& out);
 #endif

src/interp/iz3scopes.h

@@ -105,7 +105,7 @@ class scopes {
 
     void range_add(int i, range &n){
 #if 0
-	if(i < n.lo) n.lo = i;
+        if(i < n.lo) n.lo = i;
         if(i > n.hi) n.hi = i;
 #else
         range rng; rng.lo = i; rng.hi = i;
@@ -119,7 +119,7 @@ class scopes {
         int thing = tree_lca(rng1.lo,rng2.hi);
         if(thing == rng1.lo) frame = rng1.lo;
         else frame = tree_gcd(thing,rng1.hi);
-	return frame;
+        return frame;
     }
 #else
 

src/interp/iz3translate.h

@@ -47,9 +47,9 @@ class iz3translation : public iz3base {
 
  protected:
  iz3translation(iz3mgr &mgr,
-		const std::vector<std::vector<ast> > &_cnsts,
+                const std::vector<std::vector<ast> > &_cnsts,
-		const std::vector<int> &_parents,
+                const std::vector<int> &_parents,
-		const std::vector<ast> &_theory)
+                const std::vector<ast> &_theory)
      : iz3base(mgr,_cnsts,_parents,_theory)  {}
 };
 

src/math/automata/automaton.h

@@ -478,7 +478,7 @@ public:
     unsigned out_degree(unsigned state) const { return m_delta[state].size(); }
     move const& get_move_from(unsigned state) const { SASSERT(m_delta[state].size() == 1); return m_delta[state][0]; }
     move const& get_move_to(unsigned state) const { SASSERT(m_delta_inv[state].size() == 1); return m_delta_inv[state][0]; }
-    moves const& get_moves_from(unsigned state) const { return m_delta[state]; }	
+    moves const& get_moves_from(unsigned state) const { return m_delta[state]; }
     moves const& get_moves_to(unsigned state) const { return m_delta_inv[state]; }
     bool initial_state_is_source() const { return m_delta_inv[m_init].empty(); }
     bool is_final_state(unsigned s) const { return m_final_set.contains(s); }

src/math/automata/boolean_algebra.h

@@ -40,9 +40,7 @@ template<class T>
 class boolean_algebra : public positive_boolean_algebra<T> {
 public:
     virtual ~boolean_algebra() {}
-    virtual T mk_not(T x) = 0;	
+    virtual T mk_not(T x) = 0;
-    //virtual lbool are_equivalent(T x, T y) = 0;
-    //virtual T simplify(T x) = 0;    
 };
 
 #endif

src/math/polynomial/polynomial.h

@@ -63,8 +63,8 @@ namespace polynomial {
     public:
         void set_degree(var x, unsigned d) { m_var2degree.setx(x, d, 0); }
         unsigned degree(var x) const { return m_var2degree.get(x, 0); }
-		void display(std::ostream & out) const;
+        void display(std::ostream & out) const;
-		friend std::ostream & operator<<(std::ostream & out, var2degree const & ideal) { ideal.display(out); return out; }
+        friend std::ostream & operator<<(std::ostream & out, var2degree const & ideal) { ideal.display(out); return out; }
     };
 
     template<typename ValManager, typename Value = typename ValManager::numeral>

src/math/polynomial/upolynomial.h

@@ -434,11 +434,11 @@ namespace upolynomial {
                 m().reset(r[i]);
             }
             for (unsigned i = 0; i < sz; i++) {
-				typename polynomial::monomial * mon = pm.get_monomial(p, i);
+                typename polynomial::monomial * mon = pm.get_monomial(p, i);
-				if (pm.size(mon) == 0) {
+                if (pm.size(mon) == 0) {
                     m().set(r[0], pm.coeff(p, i));
-				} else if (pm.size(mon) == 1 && pm.get_var(mon, 0) == x) {
+                } else if (pm.size(mon) == 1 && pm.get_var(mon, 0) == x) {
-					unsigned m_deg_x = pm.degree(mon, 0);
+                    unsigned m_deg_x = pm.degree(mon, 0);
                     m().set(r[m_deg_x], pm.coeff(p, i));
                 }
             }

src/model/model_core.cpp

@@ -86,13 +86,13 @@ void model_core::register_decl(func_decl * d, func_interp * fi) {
 void model_core::unregister_decl(func_decl * d) {
     decl2expr::obj_map_entry * ec = m_interp.find_core(d);
     if (ec && ec->get_data().m_value != 0) {
-		m_manager.dec_ref(ec->get_data().m_key);
+        m_manager.dec_ref(ec->get_data().m_key);
-		m_manager.dec_ref(ec->get_data().m_value);
+        m_manager.dec_ref(ec->get_data().m_value);
         m_interp.remove(d);
         m_const_decls.erase(d);
         return;
     }
-    
+
     decl2finterp::obj_map_entry * ef = m_finterp.find_core(d);
     if (ef && ef->get_data().m_value != 0) {
         m_manager.dec_ref(ef->get_data().m_key);

src/muz/base/dl_context.h

@@ -54,7 +54,7 @@ namespace datalog {
         MEMOUT,
         INPUT_ERROR,
         APPROX,
-	BOUNDED,
+        BOUNDED,
         CANCELED
     };
 
@@ -318,7 +318,7 @@ namespace datalog {
            \brief Retrieve predicates
         */
         func_decl_set const& get_predicates() const { return m_preds; }
-	ast_ref_vector const &get_pinned() const {return m_pinned; }
+        ast_ref_vector const &get_pinned() const {return m_pinned; }
 
         bool is_predicate(func_decl* pred) const { return m_preds.contains(pred); }
         bool is_predicate(expr * e) const { return is_app(e) && is_predicate(to_app(e)->get_decl()); }
@@ -534,7 +534,7 @@ namespace datalog {
            \brief retrieve proof from derivation of the query.
            
            \pre engine == 'pdr'  || engine == 'duality'- this option is only supported
-	   for PDR mode and Duality mode.
+           for PDR mode and Duality mode.
          */
         proof_ref get_proof();
 

src/muz/base/dl_engine_base.h

@@ -32,7 +32,7 @@ namespace datalog {
         QBMC_ENGINE,
         TAB_ENGINE,
         CLP_ENGINE,
-	DUALITY_ENGINE,
+        DUALITY_ENGINE,
         DDNF_ENGINE,
         LAST_ENGINE
     };

src/muz/duality/duality_dl_interface.h

@@ -37,7 +37,7 @@ namespace Duality {
 
     class dl_interface : public datalog::engine_base {
         duality_data *_d;
-	datalog::context &m_ctx;
+        datalog::context &m_ctx;
 
     public:
         dl_interface(datalog::context& ctx); 
@@ -69,7 +69,7 @@ namespace Duality {
 
         proof_ref get_proof();
         
-	duality_data *dd(){return _d;}
+        duality_data *dd(){return _d;}
 
     private:
         void display_certificate_non_const(std::ostream& out);

src/muz/pdr/pdr_generalizers.h

@@ -88,7 +88,7 @@ namespace pdr {
         virtual ~core_convex_hull_generalizer() {}
         virtual void operator()(model_node& n, expr_ref_vector const& core, bool uses_level, cores& new_cores);
         virtual void operator()(model_node& n, expr_ref_vector& core, bool& uses_level);
-    };	
+    };
 
     class core_multi_generalizer : public core_generalizer {
         core_bool_inductive_generalizer m_gen;

src/muz/rel/dl_mk_similarity_compressor.h

@@ -53,7 +53,7 @@ namespace datalog {
     */
     class mk_similarity_compressor : public rule_transformer::plugin {
 
-        context &			m_context;
+        context &           m_context;
         ast_manager &       m_manager;
         /** number of similar rules necessary for a group to be introduced */
         unsigned            m_threshold_count;

src/muz/rel/dl_mk_simple_joins.h

@@ -49,7 +49,7 @@ namespace datalog {
        We say that a rule containing C_i's is a rule with a "big tail".
     */
     class mk_simple_joins : public rule_transformer::plugin {
-        context & 	    m_context;
+        context &           m_context;
         rule_manager &      rm;
     public:
         mk_simple_joins(context & ctx);

src/muz/spacer/spacer_qe_project.cpp

@@ -1209,7 +1209,7 @@ namespace qe {
 
         void operator()(model& mdl, app_ref_vector& vars, expr_ref& fml) {
           expr_map map (m);
-        	operator()(mdl, vars, fml, map);
+            operator()(mdl, vars, fml, map);
         }
 
         void operator()(model& mdl, app_ref_vector& vars, expr_ref& fml, expr_map& map) {

src/muz/transforms/dl_mk_magic_sets.h

@@ -93,7 +93,7 @@ namespace datalog {
         typedef obj_map<func_decl, adornment> pred_adornment_map;
         typedef obj_map<func_decl, func_decl *> pred2pred;
 
-        context &	       m_context;
+        context &              m_context;
         ast_manager &          m;
         rule_manager&          rm;
         ast_ref_vector         m_pinned;

src/muz/transforms/dl_mk_unbound_compressor.h

@@ -50,7 +50,7 @@ namespace datalog {
         typedef hashtable<c_info, c_info_hash, default_eq<c_info> > in_progress_table;
         typedef svector<c_info> todo_stack;
 
-        context &	    m_context;
+        context &           m_context;
         ast_manager &       m;
         rule_manager &      rm;
         rule_ref_vector     m_rules;

src/smt/diff_logic.h

@@ -956,8 +956,8 @@ public:
     }
 
     void get_neighbours_undirected(dl_var current, svector<dl_var> & neighbours) {
-	    neighbours.reset();
+        neighbours.reset();
-	    edge_id_vector & out_edges = m_out_edges[current];
+        edge_id_vector & out_edges = m_out_edges[current];
         typename edge_id_vector::iterator it = out_edges.begin(), end = out_edges.end();
         for (; it != end; ++it) {
             edge_id e_id = *it;
@@ -968,7 +968,7 @@ public:
         }
         edge_id_vector & in_edges = m_in_edges[current];
         typename edge_id_vector::iterator it2 = in_edges.begin(), end2 = in_edges.end();
-	    for (; it2 != end2; ++it2) {
+        for (; it2 != end2; ++it2) {
             edge_id e_id = *it2;
             edge & e     = m_edges[e_id];
             SASSERT(e.get_target() == current);
@@ -980,19 +980,19 @@ public:
     void dfs_undirected(dl_var start, svector<dl_var> & threads) {
         threads.reset();
         threads.resize(get_num_nodes());
-	    uint_set discovered, explored;
+        uint_set discovered, explored;
-	    svector<dl_var> nodes;
+        svector<dl_var> nodes;
         discovered.insert(start);
-	    nodes.push_back(start);
+        nodes.push_back(start);
-	    dl_var prev = start;
+        dl_var prev = start;
-	    while(!nodes.empty()) {
+        while(!nodes.empty()) {
-		    dl_var current = nodes.back();
+            dl_var current = nodes.back();
             SASSERT(discovered.contains(current) && !explored.contains(current));
-		    svector<dl_var> neighbours;
+            svector<dl_var> neighbours;
-		    get_neighbours_undirected(current, neighbours);
+            get_neighbours_undirected(current, neighbours);
             SASSERT(!neighbours.empty());
             bool found = false;
-		    for (unsigned i = 0; i < neighbours.size(); ++i) {
+            for (unsigned i = 0; i < neighbours.size(); ++i) {
                 dl_var next = neighbours[i];
                 DEBUG_CODE(
                 edge_id id;
@@ -1002,18 +1002,18 @@ public:
                     threads[prev] = next;
                     prev = next;
                     discovered.insert(next);
-	                nodes.push_back(next);
+                    nodes.push_back(next);
                     found = true;
                     break;
                 }
-		    }            
+            }            
             SASSERT(!nodes.empty());
             if (!found) {
                 explored.insert(current);
                 nodes.pop_back();
             }
-	    }
+        }
-	    threads[prev] = start;
+        threads[prev] = start;
     }
 
     void bfs_undirected(dl_var start, svector<dl_var> & parents, svector<dl_var> & depths) {
@@ -1022,31 +1022,31 @@ public:
         parents[start] = -1;
         depths.reset();
         depths.resize(get_num_nodes());
-	    uint_set visited;
+        uint_set visited;
-	    std::deque<dl_var> nodes;
+        std::deque<dl_var> nodes;
-	    visited.insert(start);
+        visited.insert(start);
-	    nodes.push_front(start);
+        nodes.push_front(start);
-	    while(!nodes.empty()) {
+        while(!nodes.empty()) {
             dl_var current = nodes.back();
             nodes.pop_back();
-		    SASSERT(visited.contains(current));
+            SASSERT(visited.contains(current));
             svector<dl_var> neighbours;
-		    get_neighbours_undirected(current, neighbours);
+            get_neighbours_undirected(current, neighbours);
             SASSERT(!neighbours.empty());
-		    for (unsigned i = 0; i < neighbours.size(); ++i) {
+            for (unsigned i = 0; i < neighbours.size(); ++i) {
-			    dl_var next = neighbours[i];
+                dl_var next = neighbours[i];
                 DEBUG_CODE(
                 edge_id id;
                 SASSERT(get_edge_id(current, next, id) || get_edge_id(next, current, id)););
                 if (!visited.contains(next)) {
                     TRACE("diff_logic", tout << "parents[" << next << "] --> " << current << std::endl;);
-	                parents[next] = current;
+                    parents[next] = current;
-	                depths[next] = depths[current] + 1;
+                    depths[next] = depths[current] + 1;
-	                visited.insert(next);
+                    visited.insert(next);
-	                nodes.push_front(next);
+                    nodes.push_front(next);
                 }
-		    }
+            }
-	    }
+        }
     }
 
     template<typename Functor>

src/smt/smt_enode.h

@@ -40,10 +40,10 @@ namespace smt {
 
     /** \ brief Use sparse maps in SMT solver.
 
-	Define this to use hash maps rather than vectors over ast
+    Define this to use hash maps rather than vectors over ast
-	nodes. This is useful in the case there are many solvers, each
+    nodes. This is useful in the case there are many solvers, each
-	referencing few nodes from a large ast manager. There is some
+    referencing few nodes from a large ast manager. There is some
-	unknown performance penalty for this. */
+    unknown performance penalty for this. */
 
     // #define SPARSE_MAP
 

src/smt/smt_quantifier.h

@@ -149,7 +149,7 @@ namespace smt {
         /**
            \brief Is "model based" instantiate allowed to instantiate this quantifier?
          */
-    	virtual bool mbqi_enabled(quantifier *q) const {return true;}
+        virtual bool mbqi_enabled(quantifier *q) const {return true;}
 
         /**
            \brief Give a change to the plugin to adjust the interpretation of unintepreted functions.

src/smt/smt_theory.h

@@ -192,7 +192,7 @@ namespace smt {
         virtual lbool validate_unsat_core(expr_ref_vector & unsat_core) {
             return l_false;
         }
-	
+
         /**
            \brief This method is invoked before the search starts.
         */

src/smt/theory_seq.h

@@ -45,7 +45,7 @@ namespace smt {
         typedef trail_stack<theory_seq> th_trail_stack;
         typedef std::pair<expr*, dependency*> expr_dep;
         typedef obj_map<expr, expr_dep> eqdep_map_t; 
-	typedef union_find<theory_seq> th_union_find;
+        typedef union_find<theory_seq> th_union_find;
 
         class seq_value_proc;
 
@@ -298,8 +298,8 @@ namespace smt {
         scoped_vector<eq>          m_eqs;        // set of current equations.
         scoped_vector<ne>          m_nqs;        // set of current disequalities.
         scoped_vector<nc>          m_ncs;        // set of non-contains constraints.
-        unsigned                   m_eq_id;	
+        unsigned                   m_eq_id;
-	th_union_find              m_find;
+        th_union_find              m_find;
 
         seq_factory*               m_factory;    // value factory
         exclusion_table            m_exclude;    // set of asserted disequalities.
@@ -584,7 +584,7 @@ namespace smt {
         // model building
         app* mk_value(app* a);
 
-	th_trail_stack& get_trail_stack() { return m_trail_stack; }
+        th_trail_stack& get_trail_stack() { return m_trail_stack; }
         void merge_eh(theory_var, theory_var, theory_var v1, theory_var v2) {}
         void after_merge_eh(theory_var r1, theory_var r2, theory_var v1, theory_var v2) { }
         void unmerge_eh(theory_var v1, theory_var v2) {}

src/smt/theory_str.cpp

@@ -4748,11 +4748,11 @@ namespace smt {
         context& ctx = get_context();
         ast_manager & m = get_manager();
 
-	// safety
+    // safety
-	if (!ctx.e_internalized(e)) {
+    if (!ctx.e_internalized(e)) {
             return false;
-	}
+    }
-	
+    
         // if an integer constant exists in the eqc, it should be the root
         enode * en_e = ctx.get_enode(e);
         enode * root_e = en_e->get_root();
@@ -7028,7 +7028,7 @@ namespace smt {
         ast_manager & m = get_manager();
         if (lenTester_fvar_map.contains(lenTester)) {
             expr * fVar = lenTester_fvar_map[lenTester];
-			expr_ref toAssert(gen_len_val_options_for_free_var(fVar, lenTester, lenTesterValue), m);
+            expr_ref toAssert(gen_len_val_options_for_free_var(fVar, lenTester, lenTesterValue), m);
             TRACE("str", tout << "asserting more length tests for free variable " << mk_ismt2_pp(fVar, m) << std::endl;);
             if (toAssert) {
                 assert_axiom(toAssert);

src/smt/watch_list.cpp

@@ -36,10 +36,10 @@ namespace smt {
     
     void watch_list::expand() {
         if (m_data == 0) {
-	    unsigned size       = DEFAULT_WATCH_LIST_SIZE + HEADER_SIZE;
+        unsigned size       = DEFAULT_WATCH_LIST_SIZE + HEADER_SIZE;
             unsigned * mem      = reinterpret_cast<unsigned*>(alloc_svect(char, size));
 #ifdef _AMD64_
-	    ++mem;  // make sure data is aligned in 64 bit machines
+        ++mem;  // make sure data is aligned in 64 bit machines
 #endif
             *mem                = 0;
             ++mem;
@@ -62,9 +62,9 @@ namespace smt {
             unsigned * mem          = reinterpret_cast<unsigned*>(alloc_svect(char, new_capacity + HEADER_SIZE));
             unsigned curr_end_cls   = end_cls_core();
 #ifdef _AMD64_
-	    ++mem;  // make sure data is aligned in 64 bit machines
+        ++mem;  // make sure data is aligned in 64 bit machines
 #endif
-	    *mem                    = curr_end_cls;
+        *mem                    = curr_end_cls;
             ++mem;
             SASSERT(bin_bytes <= new_capacity);
             unsigned new_begin_bin  = new_capacity - bin_bytes;

src/tactic/sls/sls_tracker.h

@@ -68,7 +68,7 @@ private:
     typedef obj_map<expr, value_score> scores_type;    
     typedef obj_map<expr, ptr_vector<expr> > uplinks_type;    
     typedef obj_map<expr, ptr_vector<func_decl> > occ_type;
-    obj_hashtable<expr>	  m_top_expr;
+    obj_hashtable<expr>      m_top_expr;
     scores_type           m_scores;
     uplinks_type          m_uplinks;
     entry_point_type      m_entry_points;
@@ -85,11 +85,11 @@ private:
     unsigned              m_touched;
     double                m_scale_unsat;
     unsigned              m_paws_init;
-    obj_map<expr, unsigned>	m_where_false;
+    obj_map<expr, unsigned>    m_where_false;
-    expr**					m_list_false;
+    expr**                    m_list_false;
     unsigned              m_track_unsat;
     obj_map<expr, unsigned> m_weights;
-    double				  m_top_sum;
+    double                  m_top_sum;
     obj_hashtable<expr>   m_temp_seen;
 
 public:    
@@ -450,7 +450,7 @@ public:
             m_list_false = new expr*[sz];
             for (unsigned i = 0; i < sz; i++)
             {
-        	    if (m_mpz_manager.eq(get_value(as[i]), m_zero))
+                if (m_mpz_manager.eq(get_value(as[i]), m_zero))
                     break_assertion(as[i]);
             }
         }
@@ -462,7 +462,7 @@ public:
 
             // initialize weights
             if (!m_weights.contains(e))
-        		m_weights.insert(e, m_paws_init);
+                m_weights.insert(e, m_paws_init);
 
             // positive/negative occurrences used for early pruning
             setup_occs(as[i]);
@@ -1075,7 +1075,7 @@ public:
 
             unsigned cnt_unsat = 0;
             for (unsigned i = 0; i < sz; i++)
-                if (m_mpz_manager.neq(get_value(as[i]), m_one) && (get_random_uint(16) % ++cnt_unsat == 0)) pos = i;	
+                if (m_mpz_manager.neq(get_value(as[i]), m_one) && (get_random_uint(16) % ++cnt_unsat == 0)) pos = i;    
             if (pos == static_cast<unsigned>(-1))
                 return 0;
         }
@@ -1092,7 +1092,7 @@ public:
         
         unsigned cnt_unsat = 0, pos = -1;
         for (unsigned i = 0; i < sz; i++)
-            if ((i != m_last_pos) && m_mpz_manager.neq(get_value(as[i]), m_one) && (get_random_uint(16) % ++cnt_unsat == 0)) pos = i;	
+            if ((i != m_last_pos) && m_mpz_manager.neq(get_value(as[i]), m_one) && (get_random_uint(16) % ++cnt_unsat == 0)) pos = i;
 
         if (pos == static_cast<unsigned>(-1))
             return 0;

src/test/bit_vector.cpp

@@ -27,36 +27,36 @@ static void tst1() {
     unsigned n = rand()%10000;
     for (unsigned i = 0; i < n; i++) {
         int op = rand()%6;
-	if (op <= 1) {
+    if (op <= 1) {
-	    bool val = (rand()%2) != 0;
+        bool val = (rand()%2) != 0;
-	    v1.push_back(val);
+        v1.push_back(val);
-	    v2.push_back(val);
+        v2.push_back(val);
-	    ENSURE(v1.size() == v2.size());
+        ENSURE(v1.size() == v2.size());
-	}
+    }
-	else if (op <= 3) {
+    else if (op <= 3) {
-	    ENSURE(v1.size() == v2.size());
+        ENSURE(v1.size() == v2.size());
-	    if (v1.size() > 0) {
+        if (v1.size() > 0) {
-		bool val = (rand()%2) != 0;
+        bool val = (rand()%2) != 0;
-		unsigned idx = rand()%v1.size();
+        unsigned idx = rand()%v1.size();
-		ENSURE(v1.get(idx) == v2[idx]);
+        ENSURE(v1.get(idx) == v2[idx]);
-		v1.set(idx, val);
+        v1.set(idx, val);
-		v2[idx] = val;
+        v2[idx] = val;
-		ENSURE(v1.get(idx) == v2[idx]);
+        ENSURE(v1.get(idx) == v2[idx]);
-	    }
+        }
-	}
+    }
-	else if (op <= 4) {
+    else if (op <= 4) {
-	    ENSURE(v1.size() == v2.size());
+        ENSURE(v1.size() == v2.size());
-	    if (v1.size() > 0) {
+        if (v1.size() > 0) {
-		unsigned idx = rand()%v1.size();
+        unsigned idx = rand()%v1.size();
-		VERIFY(v1.get(idx) == v2[idx]);
+        VERIFY(v1.get(idx) == v2[idx]);
-	    }
+        }
-	}
+    }
-	else if (op <= 5) {
+    else if (op <= 5) {
-	    ENSURE(v1.size() == v2.size());
+        ENSURE(v1.size() == v2.size());
-	    for (unsigned j = 0; j < v1.size(); j++) {
+        for (unsigned j = 0; j < v1.size(); j++) {
-		ENSURE(v1.get(j) == v2[j]);
+        ENSURE(v1.get(j) == v2[j]);
-	    }
+        }
-	}
+    }
     }
 }
 
@@ -309,6 +309,6 @@ void tst_bit_vector() {
     tst2();
     for (unsigned i = 0; i < 20; i++) {
         std::cerr << i << std::endl;
-	tst1();
+    tst1();
     }
 }

src/test/diff_logic.cpp

@@ -33,7 +33,7 @@ template class dl_graph<diff_logic_ext>;
 typedef dl_graph<diff_logic_ext> dlg;
 
 struct tst_dl_functor {
-	smt::literal_vector m_literals;
+    smt::literal_vector m_literals;
     void operator()(smt::literal l) {
         m_literals.push_back(l);
     }

src/test/expr_rand.cpp

@@ -98,8 +98,8 @@ void tst_expr_rand(char** argv, int argc, int& i) {
         i += 1;
         if (i + 1 < argc && 0 == strncmp(argv[i+1],"/rs:",3)) {
             rand_seed = atol(argv[i+1]+4);
-			std::cout << "random seed:" << rand_seed << "\n";
+            std::cout << "random seed:" << rand_seed << "\n";
-			i += 1;
+            i += 1;
         }
 
         if (i + 1 < argc && 0 == strcmp(argv[i+1],"/arith")) {

src/test/main.cpp

@@ -16,20 +16,20 @@
 // and print "PASS" to indicate success.
 // 
 
-#define TST(MODULE) {				\
+#define TST(MODULE) {                \
-    std::string s("test ");			\
+    std::string s("test ");            \
-    s += #MODULE;				\
+    s += #MODULE;                \
-    void tst_##MODULE();			\
+    void tst_##MODULE();            \
     if (do_display_usage)                       \
         std::cout << #MODULE << "\n";           \
-    for (int i = 0; i < argc; i++) 		\
+    for (int i = 0; i < argc; i++)         \
-	if (test_all || strcmp(argv[i], #MODULE) == 0) {	\
+    if (test_all || strcmp(argv[i], #MODULE) == 0) {    \
             enable_trace(#MODULE);              \
-	    enable_debug(#MODULE);		\
+        enable_debug(#MODULE);        \
-	    timeit timeit(true, s.c_str());     \
+        timeit timeit(true, s.c_str());     \
-	    tst_##MODULE();			\
+        tst_##MODULE();            \
             std::cout << "PASS" << std::endl;   \
-	}					\
+    }                    \
 }
 
 #define TST_ARGV(MODULE) {                              \
@@ -39,13 +39,13 @@
     if (do_display_usage)                               \
         std::cout << #MODULE << "\n";                   \
     for (int i = 0; i < argc; i++)                      \
-	if (strcmp(argv[i], #MODULE) == 0) {            \
+    if (strcmp(argv[i], #MODULE) == 0) {            \
             enable_trace(#MODULE);                      \
-	    enable_debug(#MODULE);                      \
+        enable_debug(#MODULE);                      \
-	    timeit timeit(true, s.c_str());             \
+        timeit timeit(true, s.c_str());             \
-	    tst_##MODULE(argv, argc, i);                \
+        tst_##MODULE(argv, argc, i);                \
             std::cout << "PASS" << std::endl;           \
-	}                                               \
+    }                                               \
 }
 
 void error(const char * msg) {
@@ -76,49 +76,49 @@ void display_usage() {
 void parse_cmd_line_args(int argc, char ** argv, bool& do_display_usage, bool& test_all) {
     int i = 1;
     while (i < argc) {
-	char * arg = argv[i], *eq_pos = 0;
+    char * arg = argv[i], *eq_pos = 0;
 
-	if (arg[0] == '-' || arg[0] == '/') {
+    if (arg[0] == '-' || arg[0] == '/') {
-	    char * opt_name = arg + 1;
+        char * opt_name = arg + 1;
-	    char * opt_arg  = 0;
+        char * opt_arg  = 0;
-	    char * colon    = strchr(arg, ':');
+        char * colon    = strchr(arg, ':');
-	    if (colon) {
+        if (colon) {
-		opt_arg = colon + 1;
+        opt_arg = colon + 1;
-		*colon  = 0;
+        *colon  = 0;
-	    }
+        }
-	    if (strcmp(opt_name, "h") == 0 ||
+        if (strcmp(opt_name, "h") == 0 ||
                 strcmp(opt_name, "?") == 0) {
-		display_usage();
+        display_usage();
                 do_display_usage = true;
                 return;
-	    }
+        }
-	    else if (strcmp(opt_name, "v") == 0) {
+        else if (strcmp(opt_name, "v") == 0) {
-		if (!opt_arg)
+        if (!opt_arg)
-		    error("option argument (/v:level) is missing.");
+            error("option argument (/v:level) is missing.");
-		long lvl = strtol(opt_arg, 0, 10);
+        long lvl = strtol(opt_arg, 0, 10);
-		set_verbosity_level(lvl);
+        set_verbosity_level(lvl);
-	    }
+        }
-	    else if (strcmp(opt_name, "w") == 0) {
+        else if (strcmp(opt_name, "w") == 0) {
                 enable_warning_messages(true);
-	    }
+        }
-	    else if (strcmp(opt_name, "a") == 0) {
+        else if (strcmp(opt_name, "a") == 0) {
                 test_all = true;
-	    }
+        }
 #ifdef _TRACE
-	    else if (strcmp(opt_name, "tr") == 0) {
+        else if (strcmp(opt_name, "tr") == 0) {
-		if (!opt_arg)
+        if (!opt_arg)
-		    error("option argument (/tr:tag) is missing.");
+            error("option argument (/tr:tag) is missing.");
-		enable_trace(opt_arg);
+        enable_trace(opt_arg);
-	    }
+        }
 #endif
 #ifdef Z3DEBUG
-	    else if (strcmp(opt_name, "dbg") == 0) {
+        else if (strcmp(opt_name, "dbg") == 0) {
-		if (!opt_arg)
+        if (!opt_arg)
-		    error("option argument (/dbg:tag) is missing.");
+            error("option argument (/dbg:tag) is missing.");
-		enable_debug(opt_arg);
+        enable_debug(opt_arg);
-	    }
+        }
 #endif
-	}
+    }
         else if (arg[0] != '"' && (eq_pos = strchr(arg, '='))) {
             char * key   = arg;
             *eq_pos      = 0;
@@ -130,7 +130,7 @@ void parse_cmd_line_args(int argc, char ** argv, bool& do_display_usage, bool& t
                 std::cerr << ex.msg() << "\n";
             }
         }            
-	i++;
+    i++;
     }
 }
 

src/test/model_based_opt.cpp

@@ -54,7 +54,7 @@ static void add_random_ineq(opt::model_based_opt& mbo,
             continue;
         }
         unsigned sign = r(2);
-		coeff = sign == 0 ? coeff : -coeff;
+        coeff = sign == 0 ? coeff : -coeff;
         vars.push_back(var(x, rational(coeff)));
         value += coeff*values[x];
     }

src/test/optional.cpp

@@ -36,11 +36,11 @@ struct OptFoo {
     int m_y;
 
     OptFoo(int x, int y):m_x(x), m_y(y) {
-	TRACE("optional", tout << "OptFoo created: " << m_x << " : " << m_y << "\n";);
+    TRACE("optional", tout << "OptFoo created: " << m_x << " : " << m_y << "\n";);
     }
 
     ~OptFoo() {
-	TRACE("optional", tout << "OptFoo deleted: " << m_x << " : " << m_y << "\n";);
+    TRACE("optional", tout << "OptFoo deleted: " << m_x << " : " << m_y << "\n";);
     }
 };
 

src/util/dependency.h

@@ -201,7 +201,7 @@ public:
             m_todo.push_back(d);
             unsigned qhead = 0;
             while (qhead < m_todo.size()) {
-	        d = m_todo[qhead];
+                d = m_todo[qhead];
                 qhead++;
                 if (d->is_leaf()) {
                     vs.push_back(to_leaf(d)->m_value);

src/util/hash.h

@@ -236,7 +236,7 @@ template<typename T>
 struct ptr_hash {
     typedef T * data;
     unsigned operator()(T * ptr) const { 
-	return get_ptr_hash(ptr);
+        return get_ptr_hash(ptr);
     }
 };
 

src/util/inf_eps_rational.h

@@ -119,12 +119,12 @@ class inf_eps_rational {
     bool is_rational() const { return m_infty.is_zero() && m_r.is_rational(); }
 
     int64 get_int64() const {
-	SASSERT(is_int64());
+        SASSERT(is_int64());
         return m_r.get_int64();
     }
 
     uint64 get_uint64() const {
-	SASSERT(is_uint64());
+        SASSERT(is_uint64());
         return m_r.get_uint64();
     }
 
@@ -168,45 +168,45 @@ class inf_eps_rational {
     inf_eps_rational & operator=(const inf_eps_rational & r) {
         m_infty = r.m_infty;
         m_r = r.m_r;
-	return *this;
+        return *this;
     }
 
     inf_eps_rational & operator=(const Numeral & r) {
         m_infty.reset();
         m_r = r;
-	return *this;
+        return *this;
     }
 
     inf_eps_rational & operator+=(const inf_eps_rational & r) { 
         m_infty  += r.m_infty;
         m_r      += r.m_r;
-	return *this; 
+        return *this; 
     }
 
     inf_eps_rational & operator-=(const inf_eps_rational & r) { 
         m_infty  -= r.m_infty;
         m_r      -= r.m_r;
-	return *this; 
+        return *this; 
     }
 
     inf_eps_rational & operator-=(const inf_rational & r) { 
         m_r      -= r;
-	return *this; 
+        return *this; 
     }
 
     inf_eps_rational & operator+=(const inf_rational & r) { 
         m_r      += r;
-	return *this; 
+        return *this; 
     }
 
     inf_eps_rational & operator+=(const rational & r) { 
         m_r  += r;
-	return *this; 
+        return *this; 
     }
 
     inf_eps_rational & operator-=(const rational & r) { 
         m_r  -= r;
-	return *this; 
+        return *this; 
     }
 
     inf_eps_rational & operator*=(const rational & r1) {

src/util/inf_int_rational.h

@@ -110,12 +110,12 @@ class inf_int_rational {
     bool is_rational() const { return m_second == 0; }
 
     int64 get_int64() const {
-	SASSERT(is_int64());
+        SASSERT(is_int64());
         return m_first.get_int64();
     }
 
     uint64 get_uint64() const {
-	SASSERT(is_uint64());
+        SASSERT(is_uint64());
         return m_first.get_uint64();
     }
 
@@ -132,7 +132,7 @@ class inf_int_rational {
     inf_int_rational & operator=(const inf_int_rational & r) {
         m_first = r.m_first;
         m_second = r.m_second;
-	return *this;
+        return *this;
     }
 
     inf_int_rational & operator=(const rational & r) {
@@ -154,7 +154,7 @@ class inf_int_rational {
     inf_int_rational & operator+=(const inf_int_rational & r) { 
         m_first  += r.m_first;
         m_second += r.m_second;
-	return *this; 
+        return *this; 
     }
 
     inf_int_rational & operator*=(const rational & r) { 
@@ -163,7 +163,7 @@ class inf_int_rational {
         }
         m_first  *= r;
         m_second *= r.get_int32();
-	return *this; 
+        return *this; 
     }
 
 
@@ -171,17 +171,17 @@ class inf_int_rational {
     inf_int_rational & operator-=(const inf_int_rational & r) { 
         m_first  -= r.m_first;
         m_second -= r.m_second;
-	return *this; 
+        return *this; 
     }
 
     inf_int_rational & operator+=(const rational & r) { 
         m_first  += r;
-	return *this; 
+        return *this; 
     }
 
     inf_int_rational & operator-=(const rational & r) { 
         m_first  -= r;
-	return *this; 
+        return *this; 
     }
 
     inf_int_rational & operator++() {

src/util/inf_rational.h

@@ -123,12 +123,12 @@ class inf_rational {
     bool is_rational() const { return m_second.is_zero(); }
 
     int64 get_int64() const {
-	SASSERT(is_int64());
+        SASSERT(is_int64());
         return m_first.get_int64();
     }
 
     uint64 get_uint64() const {
-	SASSERT(is_uint64());
+        SASSERT(is_uint64());
         return m_first.get_uint64();
     }
 
@@ -145,7 +145,7 @@ class inf_rational {
     inf_rational & operator=(const inf_rational & r) {
         m_first = r.m_first;
         m_second = r.m_second;
-	return *this;
+        return *this;
     }
 
     inf_rational & operator=(const rational & r) {
@@ -167,23 +167,23 @@ class inf_rational {
     inf_rational & operator+=(const inf_rational & r) { 
         m_first  += r.m_first;
         m_second += r.m_second;
-	return *this; 
+        return *this; 
     }
 
     inf_rational & operator-=(const inf_rational & r) { 
         m_first  -= r.m_first;
         m_second -= r.m_second;
-	return *this; 
+        return *this; 
     }
 
     inf_rational & operator+=(const rational & r) { 
         m_first  += r;
-	return *this; 
+        return *this; 
     }
 
     inf_rational & operator-=(const rational & r) { 
         m_first  -= r;
-	return *this; 
+        return *this; 
     }
 
     inf_rational & operator*=(const rational & r1) {

src/util/inf_s_integer.h

@@ -67,7 +67,7 @@ class inf_s_integer {
     inf_s_integer & operator=(const inf_s_integer & r) { 
         m_first = r.m_first;
         m_second = r.m_second;
-	return *this;
+        return *this;
     }
     inf_s_integer & operator=(const rational & r) {
         m_first = static_cast<int>(r.get_int64());
@@ -90,20 +90,20 @@ class inf_s_integer {
     inf_s_integer & operator+=(const inf_s_integer & r) { 
         m_first  += r.m_first;
         m_second += r.m_second;
-	return *this; 
+        return *this; 
     }
     inf_s_integer & operator-=(const inf_s_integer & r) { 
         m_first  -= r.m_first;
         m_second -= r.m_second;
-	return *this; 
+        return *this; 
     }
     inf_s_integer & operator+=(const s_integer & r) { 
         m_first  += r.get_int();
-	return *this; 
+        return *this; 
     }
     inf_s_integer & operator-=(const s_integer & r) { 
         m_first  -= r.get_int();
-	return *this; 
+        return *this; 
     }
     inf_s_integer & operator*=(const s_integer & r1) {
         m_first  *= r1.get_int();

src/util/lp/bound_analyzer_on_row.h

@@ -114,22 +114,22 @@ public :
         }
         return a * lb(j).x;
     }
-	mpq monoid_max(const mpq & a, unsigned j, bool & strict) const {
+    mpq monoid_max(const mpq & a, unsigned j, bool & strict) const {
-		if (is_pos(a)) {
+        if (is_pos(a)) {
-			strict = !is_zero(ub(j).y);
+            strict = !is_zero(ub(j).y);
-			return a * ub(j).x;
+            return a * ub(j).x;
-		}
+        }
-		strict = !is_zero(lb(j).y);
+        strict = !is_zero(lb(j).y);
-		return a * lb(j).x;
+        return a * lb(j).x;
-	}
+    }
-	const mpq & monoid_min_no_mult(bool a_is_pos, unsigned j, bool & strict) const {
+    const mpq & monoid_min_no_mult(bool a_is_pos, unsigned j, bool & strict) const {
-		if (!a_is_pos) {
+        if (!a_is_pos) {
-			strict = !is_zero(ub(j).y);
+            strict = !is_zero(ub(j).y);
-			return ub(j).x;
+            return ub(j).x;
-		}
+        }
-		strict = !is_zero(lb(j).y);
+        strict = !is_zero(lb(j).y);
-		return lb(j).x;
+        return lb(j).x;
-	}
+    }
 
     mpq monoid_min(const mpq & a, unsigned j, bool& strict) const {
         if (is_neg(a)) {
@@ -166,7 +166,7 @@ public :
         m_it.reset();
         while (m_it.next(a, j)) {
             bool str;
-			bool a_is_pos = is_pos(a);
+            bool a_is_pos = is_pos(a);
             mpq bound = total / a + monoid_min_no_mult(a_is_pos, j, str);
             if (a_is_pos) {
                 limit_j(j, bound, true, false, strict - static_cast<int>(str) > 0);
@@ -192,8 +192,8 @@ public :
         m_it.reset();
         while (m_it.next(a, j)) {
             bool str;
-			bool a_is_pos = is_pos(a);
+            bool a_is_pos = is_pos(a);
-			mpq bound = total / a + monoid_max_no_mult(a_is_pos, j, str);
+            mpq bound = total / a + monoid_max_no_mult(a_is_pos, j, str);
             bool astrict = strict - static_cast<int>(str) > 0;
             if (a_is_pos) {
                 limit_j(j, bound, true, true, astrict);

src/util/lp/init_lar_solver.h

@@ -123,7 +123,7 @@ void add_row_for_term(const lar_term * term, unsigned term_ext_index) {
 void add_row_from_term_no_constraint(const lar_term * term, unsigned term_ext_index) {
     register_new_ext_var_index(term_ext_index);
     // j will be a new variable
-	unsigned j = A_r().column_count();
+    unsigned j = A_r().column_count();
     ul_pair ul(j);
     m_vars_to_ul_pairs.push_back(ul);
     add_basic_var_to_core_fields();
@@ -152,7 +152,7 @@ void add_basic_var_to_core_fields() {
 }
 
 constraint_index add_var_bound(var_index j, lconstraint_kind kind, const mpq & right_side)  {
-	constraint_index ci = m_constraints.size();
+    constraint_index ci = m_constraints.size();
     if (!is_term(j)) { // j is a var
         auto vc = new lar_var_constraint(j, kind, right_side);
         m_constraints.push_back(vc);
@@ -212,8 +212,8 @@ void add_constraint_from_term_and_create_new_column_row(unsigned term_j, const l
 }
 
 void decide_on_strategy_and_adjust_initial_state() {
-	lean_assert(strategy_is_undecided());
+    lean_assert(strategy_is_undecided());
-	if (m_vars_to_ul_pairs.size() > m_settings.column_number_threshold_for_using_lu_in_lar_solver) {
+    if (m_vars_to_ul_pairs.size() > m_settings.column_number_threshold_for_using_lu_in_lar_solver) {
         m_settings.simplex_strategy() = simplex_strategy_enum::lu;
     } else {
         m_settings.simplex_strategy() = simplex_strategy_enum::tableau_rows; // todo: when to switch to tableau_costs?
@@ -239,14 +239,14 @@ void adjust_initial_state() {
 
 void adjust_initial_state_for_lu() {
     copy_from_mpq_matrix(A_d());
-	unsigned n = A_d().column_count();
+    unsigned n = A_d().column_count();
-	m_mpq_lar_core_solver.m_d_x.resize(n);
+    m_mpq_lar_core_solver.m_d_x.resize(n);
-	m_mpq_lar_core_solver.m_d_low_bounds.resize(n);
+    m_mpq_lar_core_solver.m_d_low_bounds.resize(n);
-	m_mpq_lar_core_solver.m_d_upper_bounds.resize(n);
+    m_mpq_lar_core_solver.m_d_upper_bounds.resize(n);
-	m_mpq_lar_core_solver.m_d_heading = m_mpq_lar_core_solver.m_r_heading;
+    m_mpq_lar_core_solver.m_d_heading = m_mpq_lar_core_solver.m_r_heading;
-	m_mpq_lar_core_solver.m_d_basis = m_mpq_lar_core_solver.m_r_basis;
+    m_mpq_lar_core_solver.m_d_basis = m_mpq_lar_core_solver.m_r_basis;
 
-	/*
+    /*
     unsigned j = A_d().column_count();
     A_d().add_column();
     lean_assert(m_mpq_lar_core_solver.m_d_x.size() == j);

src/util/lp/lar_core_solver.h

@@ -550,7 +550,7 @@ public:
             lean_assert(m_r_solver.m_basis_heading[leaving] >= 0);
             m_r_solver.change_basis_unconditionally(entering, leaving);
             if(!m_r_solver.pivot_column_tableau(entering, m_r_solver.m_basis_heading[entering])) {
-				// unroll the last step
+                // unroll the last step
                 m_r_solver.change_basis_unconditionally(leaving, entering);
 #ifdef LEAN_DEBUG
                 bool t =

src/util/lp/lar_solver.h

@@ -380,8 +380,8 @@ public:
 
 
     bool term_is_used_as_row(unsigned term) const {
-		lean_assert(is_term(term));
+        lean_assert(is_term(term));
-		return contains(m_ext_vars_to_columns, term);
+        return contains(m_ext_vars_to_columns, term);
     }
 
     void propagate_bounds_on_terms(lp_bound_propagator & bp) {
@@ -484,16 +484,16 @@ public:
 
     void pop(unsigned k) {
         int n_was = static_cast<int>(m_ext_vars_to_columns.size());
-		m_status.pop(k);
+        m_status.pop(k);
-		m_infeasible_column_index.pop(k);
+        m_infeasible_column_index.pop(k);
         unsigned n = m_vars_to_ul_pairs.peek_size(k);
-		for (unsigned j = n_was; j-- > n;)
+        for (unsigned j = n_was; j-- > n;)
-			m_ext_vars_to_columns.erase(m_columns_to_ext_vars_or_term_indices[j]);
+            m_ext_vars_to_columns.erase(m_columns_to_ext_vars_or_term_indices[j]);
-		m_columns_to_ext_vars_or_term_indices.resize(n);
+        m_columns_to_ext_vars_or_term_indices.resize(n);
-		if (m_settings.use_tableau()) {
+        if (m_settings.use_tableau()) {
             pop_tableau();
         }
-		m_vars_to_ul_pairs.pop(k);
+        m_vars_to_ul_pairs.pop(k);
 
         m_mpq_lar_core_solver.pop(k);
         clean_large_elements_after_pop(n, m_columns_with_changed_bound);
@@ -501,7 +501,7 @@ public:
         clean_large_elements_after_pop(m, m_rows_with_changed_bounds);
         clean_inf_set_of_r_solver_after_pop();
         lean_assert(m_settings.simplex_strategy() == simplex_strategy_enum::undecided ||
-			(!use_tableau()) || m_mpq_lar_core_solver.m_r_solver.reduced_costs_are_correct_tableau());
+            (!use_tableau()) || m_mpq_lar_core_solver.m_r_solver.reduced_costs_are_correct_tableau());
 
 
         lean_assert(ax_is_correct());
@@ -518,9 +518,9 @@ public:
         }
         m_terms.resize(m_term_count);
         m_orig_terms.resize(m_term_count);
-		m_simplex_strategy.pop(k);
+        m_simplex_strategy.pop(k);
-		m_settings.simplex_strategy() = m_simplex_strategy;
+        m_settings.simplex_strategy() = m_simplex_strategy;
-		lean_assert(sizes_are_correct());
+        lean_assert(sizes_are_correct());
         lean_assert((!m_settings.use_tableau()) || m_mpq_lar_core_solver.m_r_solver.reduced_costs_are_correct_tableau());
     }
 
@@ -967,8 +967,8 @@ public:
 
     template <typename U, typename V>
     void copy_from_mpq_matrix(static_matrix<U, V> & matr) {
-		matr.m_rows.resize(A_r().row_count());
+        matr.m_rows.resize(A_r().row_count());
-		matr.m_columns.resize(A_r().column_count());
+        matr.m_columns.resize(A_r().column_count());
         for (unsigned i = 0; i < matr.row_count(); i++) {
             for (auto & it : A_r().m_rows[i]) {
                 matr.set(i, it.m_j,  convert_struct<U, mpq>::convert(it.get_val()));

src/util/lp/lp_bound_propagator.cpp

@@ -17,11 +17,11 @@ const impq & lp_bound_propagator::get_upper_bound(unsigned j) const {
 }
 void lp_bound_propagator::try_add_bound(const mpq & v, unsigned j, bool is_low, bool coeff_before_j_is_pos, unsigned row_or_term_index, bool strict) {
     unsigned term_j = m_lar_solver.adjust_column_index_to_term_index(j);
-	mpq w = v;
+    mpq w = v;
-	if (term_j != j) {
+    if (term_j != j) {
-		j = term_j;
+        j = term_j;
-		w += m_lar_solver.get_term(term_j).m_v; // when terms are turned into the columns they "lose" the right side, at this moment they aquire it back
+        w += m_lar_solver.get_term(term_j).m_v; // when terms are turned into the columns they "lose" the right side, at this moment they aquire it back
-	}
+    }
     lconstraint_kind kind = is_low? GE : LE;
     if (strict)
         kind = static_cast<lconstraint_kind>(kind / 2);

src/util/lp/lp_settings.h

@@ -278,13 +278,13 @@ public:
         return m_simplex_strategy;
     }
 
-	bool use_lu() const {
+    bool use_lu() const {
-		return m_simplex_strategy == simplex_strategy_enum::lu;
+        return m_simplex_strategy == simplex_strategy_enum::lu;
-	}
+    }
 
     bool use_tableau() const {
-		return m_simplex_strategy == simplex_strategy_enum::tableau_rows ||
+        return m_simplex_strategy == simplex_strategy_enum::tableau_rows ||
-			m_simplex_strategy == simplex_strategy_enum::tableau_costs;
+            m_simplex_strategy == simplex_strategy_enum::tableau_costs;
     }
 
     bool use_tableau_rows() const {

src/util/lp/lp_utils.h

@@ -18,7 +18,7 @@ bool try_get_val(const std::unordered_map<A,B> & map, const A& key, B & val) {
 
 template <typename A, typename B>
 bool contains(const std::unordered_map<A, B> & map, const A& key) {
-	return map.find(key) != map.end();
+    return map.find(key) != map.end();
 }
 
 #ifdef lp_for_z3

src/util/lp/stacked_vector.h

@@ -51,10 +51,10 @@ public:
 
 private:
     void emplace_replace(unsigned i,const B & b) {
-		if (m_vector[i] != b) {
+        if (m_vector[i] != b) {
-			m_changes.push_back(std::make_pair(i, m_vector[i]));
+            m_changes.push_back(std::make_pair(i, m_vector[i]));
-			m_vector[i] = b;
+            m_vector[i] = b;
-		}
+        }
     }
 public:
 
@@ -87,14 +87,14 @@ public:
     }
 
     template <typename T>  
-	void pop_tail(vector<T> & v, unsigned k) {
+    void pop_tail(vector<T> & v, unsigned k) {
-		lean_assert(v.size() >= k);
+        lean_assert(v.size() >= k);
-		v.resize(v.size() - k);
+        v.resize(v.size() - k);
-	}
+    }
 
     template <typename T>  
     void resize(vector<T> & v, unsigned new_size) {
-		v.resize(new_size);
+        v.resize(new_size);
     }
     
     void pop(unsigned k) {
@@ -156,10 +156,10 @@ public:
         m_vector.resize(m_vector.size() + 1);
     }
 
-	unsigned peek_size(unsigned k) const {
+    unsigned peek_size(unsigned k) const {
-		lean_assert(k > 0 && k <= m_stack_of_vector_sizes.size());
+        lean_assert(k > 0 && k <= m_stack_of_vector_sizes.size());
-		return m_stack_of_vector_sizes[m_stack_of_vector_sizes.size() - k];
+        return m_stack_of_vector_sizes[m_stack_of_vector_sizes.size() - k];
-	}
+    }
 
     const vector<B>& operator()() const { return m_vector; }
 };

src/util/lp/static_matrix.h

@@ -47,7 +47,7 @@ class static_matrix
         dim(unsigned m, unsigned n) :m_m(m), m_n(n) {}
     };
     std::stack<dim> m_stack;
-	vector<unsigned> m_became_zeros; // the row indices that became zeroes during the pivoting
+    vector<unsigned> m_became_zeros; // the row indices that became zeroes during the pivoting
 public:
     typedef vector<row_cell<T>> row_strip;
     typedef vector<column_cell> column_strip;

src/util/lp/ul_pair.h

@@ -49,8 +49,8 @@ public:
             && m_upper_bound_witness == p.m_upper_bound_witness &&
             m_i == p.m_i;
     }
-	// empty constructor
+    // empty constructor
-	ul_pair() :
+    ul_pair() :
         m_low_bound_witness(static_cast<constraint_index>(-1)),
         m_upper_bound_witness(static_cast<constraint_index>(-1)),
         m_i(static_cast<row_index>(-1))

src/util/map.h

@@ -135,7 +135,7 @@ public:
     value const& get(key const& k, value const& default_value) const {
         entry* e = find_core(k);
         if (e) {
-	  return e->get_data().m_value;
+            return e->get_data().m_value;
         }
         else {
             return default_value;

src/util/max_cliques.h

@@ -92,7 +92,7 @@ public:
         m_next.reserve(std::max(src, dst) + 1);
         m_next.reserve(std::max(negate(src), negate(dst)) + 1);
         m_next[src].push_back(dst);
-		m_next[dst].push_back(src);
+        m_next[dst].push_back(src);
     }
 
     void cliques(unsigned_vector const& ps, vector<unsigned_vector>& cliques) {     
@@ -104,7 +104,7 @@ public:
             max = std::max(max, std::max(np, p) + 1);
         }
         m_next.reserve(max);
-		m_tc.reserve(m_next.size());
+        m_tc.reserve(m_next.size());
         unsigned_vector clique;
         uint_set vars;
         for (unsigned i = 0; i < num_ps; ++i) {

src/util/rational.h

@@ -422,7 +422,7 @@ inline bool operator>(rational const & r1, rational const & r2) {
 }
 
 inline bool operator<(rational const & r1, int r2) {
-	return r1 < rational(r2);
+    return r1 < rational(r2);
 }
 
 inline bool operator<=(rational const & r1, rational const & r2) { 
@@ -450,11 +450,11 @@ inline rational operator+(rational const & r1, rational const & r2) {
 }
 
 inline rational operator+(int r1, rational const & r2) {
-	return rational(r1) + r2;
+    return rational(r1) + r2;
 }
 
 inline rational operator+(rational const & r1, int r2) {
-	return r1 + rational(r2);
+    return r1 + rational(r2);
 }
 
 
@@ -463,11 +463,11 @@ inline rational operator-(rational const & r1, rational const & r2) {
 }
 
 inline rational operator-(rational const & r1, int r2) {
-	return r1 - rational(r2);
+    return r1 - rational(r2);
 }
 
 inline rational operator-(int r1, rational const & r2) {
-	return rational(r1) - r2;
+    return rational(r1) - r2;
 }
 
 inline rational operator-(rational const & r) { 
@@ -492,11 +492,11 @@ inline rational operator/(rational const & r1, rational const & r2) {
 }
 
 inline rational operator/(rational const & r1, int r2) {
-	return r1 / rational(r2);
+    return r1 / rational(r2);
 }
 
-inline rational operator/(int r1, rational const &	r2) {
+inline rational operator/(int r1, rational const &    r2) {
-	return rational(r1) / r2;
+    return rational(r1) / r2;
 }
 
 inline rational power(rational const & r, unsigned p) {

src/util/stopwatch.h

@@ -110,7 +110,7 @@ public:
             mach_timespec_t _stop;
             clock_get_time(m_host_clock, &_stop);
             m_time += (_stop.tv_sec - m_start.tv_sec) * 1000000000ull;
-	    m_time += (_stop.tv_nsec - m_start.tv_nsec);
+            m_time += (_stop.tv_nsec - m_start.tv_nsec);
             m_running = false;
         }
     }
@@ -163,8 +163,8 @@ public:
             struct timespec _stop;
             clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &_stop);
             m_time += (_stop.tv_sec - m_start.tv_sec) * 1000000000ull;
-	    if (m_time != 0 || _stop.tv_nsec >= m_start.tv_nsec)
+            if (m_time != 0 || _stop.tv_nsec >= m_start.tv_nsec)
-	      m_time += (_stop.tv_nsec - m_start.tv_nsec);
+                m_time += (_stop.tv_nsec - m_start.tv_nsec);
             m_running = false;
         }
     }

src/util/util.h

@@ -153,13 +153,13 @@ template<class T, size_t N> char (*ArraySizer(T (&)[N]))[N];
 template<typename IT>
 void display(std::ostream & out, const IT & begin, const IT & end, const char * sep, bool & first) {
     for(IT it = begin; it != end; ++it) {
-	if (first) {
+    if (first) {
-	    first = false;
+        first = false;
-	}
+    }
-	else {
+    else {
-	    out << sep;
+        out << sep;
-	}
+    }
-	out << *it;
+    out << *it;
     }
 }
 
@@ -172,9 +172,9 @@ void display(std::ostream & out, const IT & begin, const IT & end, const char *
 template<typename T>
 struct delete_proc {
     void operator()(T * ptr) { 
-	if (ptr) {
+    if (ptr) {
-	    dealloc(ptr);
+        dealloc(ptr);
-	}
+    }
     }
 };