remove '#include <iostream>' from headers and from unneeded places

It's harmful to have iostream everywhere as it injects functions in the compiled files

src/muz/base/dl_boogie_proof.cpp

@@ -121,11 +121,11 @@ namespace datalog {
     }
     
     void boogie_proof::set_proof(proof* p) {
-        std::cout << "set proof\n";
+        //std::cout << "set proof\n";
         m_proof = p;
         proof_utils::push_instantiations_up(m_proof);
         mk_input_resolution(m_proof);
-        std::cout << "proof set\n";
+        //std::cout << "proof set\n";
     }
         
     void boogie_proof::set_model(model* m) {
@@ -201,7 +201,7 @@ namespace datalog {
         ptr_vector<proof> todo;
         todo.push_back(p);
         ast_mark visited;
-        std::cout << "get_subst\n" << mk_pp(p, m) << "\n";
+        //std::cout << "get_subst\n" << mk_pp(p, m) << "\n";
         while (!todo.empty()) {
             proof* p = todo.back();
             todo.pop_back();

src/muz/base/dl_context.cpp

@@ -17,6 +17,7 @@ Revision History:
 
 --*/
 
+#include<iostream>
 #include<sstream>
 #include<limits>
 #include "ast/arith_decl_plugin.h"

src/muz/base/dl_util.h

@@ -257,12 +257,14 @@ namespace datalog {
             }
             container[i-ofs] = container[i];
         }
+#if 0
         if (r_i != removed_col_cnt) {
             for (unsigned i = 0; i < removed_col_cnt; ++i) {
                 std::cout << removed_cols[i] << " ";
             }
             std::cout << " container size: " << n << "\n";
         }
+#endif
         SASSERT(r_i==removed_col_cnt);
         container.resize(n-removed_col_cnt);
     }

src/muz/ddnf/ddnf.cpp

@@ -26,6 +26,7 @@ Revision History:
 #include "ast/scoped_proof.h"
 #include "ast/bv_decl_plugin.h"
 #include "muz/rel/tbv.h"
+#include <iostream>
 
 namespace datalog {
 
@@ -224,9 +225,9 @@ namespace datalog {
         }
 
         void display_statistics(std::ostream& out) const {            
-            std::cout << "Number of insertions:  " << m_stats.m_num_inserts << "\n";
-            std::cout << "Number of comparisons: " << m_stats.m_num_comparisons << "\n";
-            std::cout << "Number of nodes:       " << size() << "\n";
+            out << "Number of insertions:  " << m_stats.m_num_inserts << "\n"
+                   "Number of comparisons: " << m_stats.m_num_comparisons << "\n"
+                   "Number of nodes:       " << size() << "\n";
         }
 
         void display(std::ostream& out) const {            

src/muz/rel/aig_exporter.cpp

@@ -108,13 +108,11 @@ namespace datalog {
                 rule *r = *II;
                 unsigned numqs = r->get_positive_tail_size();
                 if (numqs > 1) {
-                    std::cerr << "non-linear clauses not supported\n";
-                    exit(-1);
+                    throw default_exception("non-linear clauses not supported");
                 }
 
                 if (numqs != r->get_uninterpreted_tail_size()) {
-                    std::cerr << "negation of queries not supported\n";
-                    exit(-1);
+                    throw default_exception("negation of queries not supported");
                 }
 
                 exprs.reset();

src/muz/rel/dl_compiler.h

@@ -18,8 +18,6 @@ Revision History:
 --*/
 #pragma once
 
-#include<iostream>
-#include<list>
 #include<utility>
 
 #include "ast/ast.h"

src/muz/rel/dl_instruction.h

@@ -18,7 +18,7 @@ Revision History:
 --*/
 #pragma once
 
-#include<iostream>
+#include<ostream>
 #include<string>
 #include<utility>
 #include "ast/ast.h"

src/muz/rel/dl_sparse_table.h

@@ -19,7 +19,6 @@ Revision History:
 
 #pragma once
 
-#include<iostream>
 #include<list>
 #include<utility>
 

src/muz/rel/dl_table.h

@@ -18,7 +18,6 @@ Revision History:
 --*/
 #pragma once
 
-#include<iostream>
 #include<list>
 #include<utility>
 

src/muz/spacer/spacer_json.h

@@ -19,7 +19,7 @@ Notes:
 
 #pragma once
 
-#include<iostream>
+#include<ostream>
 #include<map>
 #include "util/ref.h"
 #include "util/ref_vector.h"

src/muz/transforms/dl_mk_array_instantiation.cpp

@@ -39,6 +39,7 @@ namespace datalog {
     }
 
     rule_set * mk_array_instantiation::operator()(rule_set const & source)  {
+#if 0
         std::cout<<"Array Instantiation called with parameters :"
                  <<" enforce="<<m_ctx.get_params().xform_instantiate_arrays_enforce()
                  <<" nb_quantifier="<<m_ctx.get_params().xform_instantiate_arrays_nb_quantifier()
@@ -46,6 +47,7 @@ namespace datalog {
                  <<"\n";
         std::cout<<"Input rules = \n";
         source.display(std::cout);
+#endif
         src_set = &source;
         scoped_ptr<rule_set> result = alloc(rule_set, m_ctx);
         dst = result.get();
@@ -55,8 +57,10 @@ namespace datalog {
             rule & r = *source.get_rule(i);
             instantiate_rule(r, *result);
         }
+#if 0
         std::cout<<"\n\nOutput rules = \n";
         result->display(std::cout);
+#endif
         return result.detach();
     }