Fix some typos. (#7115)

src/tactic/core/tseitin_cnf_tactic.cpp

@@ -905,10 +905,10 @@ public:
 
     void collect_param_descrs(param_descrs & r) override {
         insert_max_memory(r);
-        r.insert("common_patterns", CPK_BOOL, "minimize the number of auxiliary variables during CNF encoding by identifing commonly used patterns", "true");
+        r.insert("common_patterns", CPK_BOOL, "minimize the number of auxiliary variables during CNF encoding by identifying commonly used patterns", "true");
         r.insert("distributivity", CPK_BOOL, "minimize the number of auxiliary variables during CNF encoding by applying distributivity over unshared subformulas", "true");
         r.insert("distributivity_blowup", CPK_UINT, "maximum overhead for applying distributivity during CNF encoding", "32");
-        r.insert("ite_chaing", CPK_BOOL, "minimize the number of auxiliary variables during CNF encoding by identifing if-then-else chains", "true");                                                       
+        r.insert("ite_chaing", CPK_BOOL, "minimize the number of auxiliary variables during CNF encoding by identifying if-then-else chains", "true");                                                       
         r.insert("ite_extra", CPK_BOOL, "add redundant clauses (that improve unit propagation) when encoding if-then-else formulas", "true");
     }
     

src/tactic/dependent_expr_state_tactic.h

@@ -64,7 +64,7 @@ public:
     }
 
     /**
-    * size(), [](), update() and inconsisent() implement the abstract interface of dependent_expr_state
+    * size(), [](), update() and inconsistent() implement the abstract interface of dependent_expr_state
     */
     unsigned qtail() const override { return m_goal->size(); }
 

src/tactic/fd_solver/smtfd_solver.cpp

@@ -433,7 +433,7 @@ namespace smtfd {
         void populate_model(model_ref& mdl, expr_ref_vector const& terms);
 
         /**
-         * \brief check consistency properties that can only be achived using a global analysis of terms
+         * \brief check consistency properties that can only be achieved using a global analysis of terms
          */
         void global_check(expr_ref_vector const& core);
 

src/tactic/goal_proof_converter.h

@@ -37,7 +37,7 @@ public:
     }
 
     proof_ref operator()(ast_manager & m, unsigned num_source, proof * const * source) override {
-        // ignore the proofs from the arguments, instead obtain the proofs fromt he subgoals.
+        // ignore the proofs from the arguments, instead obtain the proofs from the subgoals.
         SASSERT(num_source == 0);
         proof_converter_ref_buffer pc_buffer;          
         for (goal_ref g : m_goals) {

src/tactic/ufbv/quasi_macros_tactic.h

@@ -18,7 +18,7 @@ Tactic Documentation
 ## Tactic quasi-macro-finder
 
 ### Short Description
-dentifies and applies quasi-macros.
+Identifies and applies quasi-macros.
 
 ### Long Description