Add missing includes. (#6207)

This PR adds includes that are missing from source files, but currently provided by other includes.
This mostly concerns <sstream> which is currently included by the statistics, which will change in the future.

17 files changed, 28 insertions, 0 deletions

diff --git a/src/expr/proof_node_manager.cpp b/src/expr/proof_node_manager.cpp
index 6d8b05c0a..a018db4c0 100644
--- a/src/expr/proof_node_manager.cpp
+++ b/src/expr/proof_node_manager.cpp
@@ -14,6 +14,8 @@
 
 #include "expr/proof_node_manager.h"
 
+#include <sstream>
+
 #include "expr/proof.h"
 #include "expr/proof_checker.h"
 #include "expr/proof_node.h"
diff --git a/src/expr/term_conversion_proof_generator.cpp b/src/expr/term_conversion_proof_generator.cpp
index d15776c3f..470b8c9f8 100644
--- a/src/expr/term_conversion_proof_generator.cpp
+++ b/src/expr/term_conversion_proof_generator.cpp
@@ -14,6 +14,8 @@
 
 #include "expr/term_conversion_proof_generator.h"
 
+#include <sstream>
+
 #include "expr/proof_checker.h"
 #include "expr/proof_node.h"
 #include "expr/term_context.h"
diff --git a/src/preprocessing/passes/ho_elim.cpp b/src/preprocessing/passes/ho_elim.cpp
index dfe7da87d..284fbc72b 100644
--- a/src/preprocessing/passes/ho_elim.cpp
+++ b/src/preprocessing/passes/ho_elim.cpp
@@ -16,6 +16,8 @@
 
 #include "preprocessing/passes/ho_elim.h"
 
+#include <sstream>
+
 #include "expr/node_algorithm.h"
 #include "options/quantifiers_options.h"
 #include "preprocessing/assertion_pipeline.h"
diff --git a/src/smt/preprocess_proof_generator.cpp b/src/smt/preprocess_proof_generator.cpp
index ee2b12827..9ee01b2ef 100644
--- a/src/smt/preprocess_proof_generator.cpp
+++ b/src/smt/preprocess_proof_generator.cpp
@@ -15,6 +15,8 @@
 
 #include "smt/preprocess_proof_generator.h"
 
+#include <sstream>
+
 #include "expr/proof.h"
 #include "expr/proof_checker.h"
 #include "expr/proof_node.h"
diff --git a/src/smt/set_defaults.cpp b/src/smt/set_defaults.cpp
index 535c14560..f8476b734 100644
--- a/src/smt/set_defaults.cpp
+++ b/src/smt/set_defaults.cpp
@@ -14,6 +14,8 @@
 
 #include "smt/set_defaults.h"
 
+#include <sstream>
+
 #include "base/output.h"
 #include "options/arith_options.h"
 #include "options/arrays_options.h"
diff --git a/src/smt/sygus_solver.cpp b/src/smt/sygus_solver.cpp
index 6cb6a499f..ea74f7a1e 100644
--- a/src/smt/sygus_solver.cpp
+++ b/src/smt/sygus_solver.cpp
@@ -14,6 +14,8 @@
 
 #include "smt/sygus_solver.h"
 
+#include <sstream>
+
 #include "expr/dtype.h"
 #include "options/quantifiers_options.h"
 #include "options/smt_options.h"
diff --git a/src/theory/arith/arith_rewriter.cpp b/src/theory/arith/arith_rewriter.cpp
index 170e2d0f4..2de8cf66b 100644
--- a/src/theory/arith/arith_rewriter.cpp
+++ b/src/theory/arith/arith_rewriter.cpp
@@ -16,6 +16,7 @@
  **/
 
 #include <set>
+#include <sstream>
 #include <stack>
 #include <vector>
 
diff --git a/src/theory/arith/cut_log.cpp b/src/theory/arith/cut_log.cpp
index 89165b45e..426e10956 100644
--- a/src/theory/arith/cut_log.cpp
+++ b/src/theory/arith/cut_log.cpp
@@ -16,6 +16,7 @@
  **/
 
 #include <cmath>
+#include <iomanip>
 #include <limits.h>
 #include <map>
 #include <math.h>
diff --git a/src/theory/arith/operator_elim.cpp b/src/theory/arith/operator_elim.cpp
index ab01960dd..ee15e0f11 100644
--- a/src/theory/arith/operator_elim.cpp
+++ b/src/theory/arith/operator_elim.cpp
@@ -14,6 +14,8 @@
 
 #include "theory/arith/operator_elim.h"
 
+#include <sstream>
+
 #include "expr/attribute.h"
 #include "expr/bound_var_manager.h"
 #include "expr/skolem_manager.h"
diff --git a/src/theory/quantifiers/extended_rewrite.cpp b/src/theory/quantifiers/extended_rewrite.cpp
index c201c9ffc..9c6dd3964 100644
--- a/src/theory/quantifiers/extended_rewrite.cpp
+++ b/src/theory/quantifiers/extended_rewrite.cpp
@@ -14,6 +14,8 @@
 
 #include "theory/quantifiers/extended_rewrite.h"
 
+#include <sstream>
+
 #include "theory/arith/arith_msum.h"
 #include "theory/bv/theory_bv_utils.h"
 #include "theory/datatypes/datatypes_rewriter.h"
diff --git a/src/theory/quantifiers/query_generator.cpp b/src/theory/quantifiers/query_generator.cpp
index 1c34cc2f4..61ad4b87f 100644
--- a/src/theory/quantifiers/query_generator.cpp
+++ b/src/theory/quantifiers/query_generator.cpp
@@ -16,6 +16,7 @@
 #include "theory/quantifiers/query_generator.h"
 
 #include <fstream>
+#include <sstream>
 
 #include "options/quantifiers_options.h"
 #include "smt/smt_engine.h"
diff --git a/src/theory/quantifiers/sygus/sygus_grammar_cons.cpp b/src/theory/quantifiers/sygus/sygus_grammar_cons.cpp
index 1e58a1f24..7645cc237 100644
--- a/src/theory/quantifiers/sygus/sygus_grammar_cons.cpp
+++ b/src/theory/quantifiers/sygus/sygus_grammar_cons.cpp
@@ -14,6 +14,7 @@
  **/
 #include "theory/quantifiers/sygus/sygus_grammar_cons.h"
 
+#include <sstream>
 #include <stack>
 
 #include "expr/dtype_cons.h"
diff --git a/src/theory/quantifiers/sygus/sygus_grammar_norm.cpp b/src/theory/quantifiers/sygus/sygus_grammar_norm.cpp
index c72ad20d9..964d64655 100644
--- a/src/theory/quantifiers/sygus/sygus_grammar_norm.cpp
+++ b/src/theory/quantifiers/sygus/sygus_grammar_norm.cpp
@@ -15,6 +15,8 @@
 
 #include "theory/quantifiers/sygus/sygus_grammar_norm.h"
 
+#include <sstream>
+
 #include "expr/dtype_cons.h"
 #include "expr/node_manager_attributes.h"  // for VarNameAttr
 #include "options/quantifiers_options.h"
diff --git a/src/theory/quantifiers/sygus/sygus_process_conj.cpp b/src/theory/quantifiers/sygus/sygus_process_conj.cpp
index 66e322efe..93474b4ae 100644
--- a/src/theory/quantifiers/sygus/sygus_process_conj.cpp
+++ b/src/theory/quantifiers/sygus/sygus_process_conj.cpp
@@ -14,6 +14,7 @@
  **/
 #include "theory/quantifiers/sygus/sygus_process_conj.h"
 
+#include <sstream>
 #include <stack>
 
 #include "options/quantifiers_options.h"
diff --git a/src/theory/quantifiers/sygus/term_database_sygus.cpp b/src/theory/quantifiers/sygus/term_database_sygus.cpp
index 50c522d95..e7bbc947a 100644
--- a/src/theory/quantifiers/sygus/term_database_sygus.cpp
+++ b/src/theory/quantifiers/sygus/term_database_sygus.cpp
@@ -14,6 +14,8 @@
 
 #include "theory/quantifiers/sygus/term_database_sygus.h"
 
+#include <sstream>
+
 #include "base/check.h"
 #include "expr/dtype_cons.h"
 #include "expr/sygus_datatype.h"
diff --git a/src/theory/quantifiers/sygus_sampler.cpp b/src/theory/quantifiers/sygus_sampler.cpp
index e5bb7b300..ea530da67 100644
--- a/src/theory/quantifiers/sygus_sampler.cpp
+++ b/src/theory/quantifiers/sygus_sampler.cpp
@@ -14,6 +14,8 @@
 
 #include "theory/quantifiers/sygus_sampler.h"
 
+#include <sstream>
+
 #include "expr/dtype.h"
 #include "expr/dtype_cons.h"
 #include "expr/node_algorithm.h"
diff --git a/src/theory/sort_inference.cpp b/src/theory/sort_inference.cpp
index 18f07703c..e9e788160 100644
--- a/src/theory/sort_inference.cpp
+++ b/src/theory/sort_inference.cpp
@@ -21,6 +21,7 @@
 
 #include "theory/sort_inference.h"
 
+#include <sstream>
 #include <vector>
 
 #include "options/quantifiers_options.h"