add dump_models option per suggestion from Pankaj Chauhan

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

src/cmd_context/basic_cmds.cpp

@@ -21,14 +21,12 @@ Notes:
 #include"ast_smt2_pp.h"
 #include"ast_pp.h"
 #include"model_smt2_pp.h"
-#include"model_v2_pp.h"
 #include"array_decl_plugin.h"
 #include"pp.h"
 #include"cmd_util.h"
 #include"simplify_cmd.h"
 #include"eval_cmd.h"
 #include"gparams.h"
-#include"model_params.hpp"
 #include"env_params.h"
 
 class help_cmd : public cmd {
@@ -105,17 +103,7 @@ ATOMIC_CMD(get_model_cmd, "get-model", "retrieve model for the last check-sat co
         throw cmd_exception("model is not available");
     model_ref m;
     ctx.get_check_sat_result()->get_model(m);
-    model_params p;
-    if (p.v1() || p.v2()) {
-        std::ostringstream buffer;
-        model_v2_pp(buffer, *m, p.partial());
-        ctx.regular_stream() << "\"" << escaped(buffer.str().c_str(), true) << "\"" << std::endl;
-    } else {
-        ctx.regular_stream() << "(model " << std::endl;
-        model_smt2_pp(ctx.regular_stream(), ctx, *(m.get()), 2);
-        // m->display(ctx.regular_stream());
-        ctx.regular_stream() << ")" << std::endl;
-    }
+    ctx.display_model(m);
 });
 
 ATOMIC_CMD(get_assignment_cmd, "get-assignment", "retrieve assignment", {

src/cmd_context/cmd_context.cpp

@@ -41,6 +41,8 @@ Notes:
 #include"scoped_timer.h"
 #include"interpolant_cmds.h"
 #include"model_smt2_pp.h"
+#include"model_v2_pp.h"
+#include"model_params.hpp"
 
 func_decls::func_decls(ast_manager & m, func_decl * f):
     m_decls(TAG(func_decl*, f, 0)) {
@@ -1409,11 +1411,7 @@ void cmd_context::check_sat(unsigned num_assumptions, expr * const * assumptions
                 if (get_opt()->print_model()) {
                     model_ref mdl;
                     get_opt()->get_model(mdl);
-                    if (mdl) {
-                        regular_stream() << "(model " << std::endl;
-                        model_smt2_pp(regular_stream(), *this, *(mdl.get()), 2);
-                        regular_stream() << ")" << std::endl;                    
-                    }
+                    display_model(mdl);
                 }
                 r = get_opt()->optimize();
             }
@@ -1456,9 +1454,29 @@ void cmd_context::check_sat(unsigned num_assumptions, expr * const * assumptions
     }
     display_sat_result(r);
     validate_check_sat_result(r);
-    if (r == l_true)
+    if (r == l_true) {
         validate_model();
+        if (m_params.m_dump_models) {
+            model_ref md;
+            get_check_sat_result()->get_model(md);
+            display_model(md);
+        }
+    }
+}
 
+void cmd_context::display_model(model_ref& mdl) {
+    if (mdl) {
+        model_params p;
+        if (p.v1() || p.v2()) {
+            std::ostringstream buffer;
+            model_v2_pp(buffer, *mdl, p.partial());
+            regular_stream() << "\"" << escaped(buffer.str().c_str(), true) << "\"" << std::endl;
+        } else {
+            regular_stream() << "(model " << std::endl;
+            model_smt2_pp(regular_stream(), *this, *mdl, 2);
+            regular_stream() << ")" << std::endl;
+        }
+    }
 }
 
 void cmd_context::display_sat_result(lbool r) {

src/cmd_context/cmd_context.h

@@ -325,6 +325,7 @@ public:
     check_sat_result * get_check_sat_result() const { return m_check_sat_result.get(); }
     check_sat_state cs_state() const;
     void validate_model();
+    void display_model(model_ref& mdl);
 
     void register_plugin(symbol const & name, decl_plugin * p, bool install_names);    
     bool is_func_decl(symbol const & s) const;

src/cmd_context/context_params.cpp

@@ -27,6 +27,7 @@ context_params::context_params() {
     m_unsat_core     = false;
     m_model          = true;
     m_model_validate = false;
+    m_dump_models    = false;
     m_auto_config    = true;
     m_proof          = false;
     m_trace          = false;
@@ -79,6 +80,9 @@ void context_params::set(char const * param, char const * value) {
     else if (p == "model_validate") {
         set_bool(m_model_validate, param, value);
     }
+    else if (p == "dump_models") {
+        set_bool(m_dump_models, param, value);
+    }
     else if (p == "trace") {
         set_bool(m_trace, param, value);
     }
@@ -116,6 +120,7 @@ void context_params::updt_params(params_ref const & p) {
     m_proof             = p.get_bool("proof", m_proof);
     m_model             = p.get_bool("model", m_model);
     m_model_validate    = p.get_bool("model_validate", m_model_validate);
+    m_dump_models       = p.get_bool("dump_models", m_dump_models);
     m_trace             = p.get_bool("trace", m_trace);
     m_trace_file_name   = p.get_str("trace_file_name", "z3.log");
     m_unsat_core        = p.get_bool("unsat_core", m_unsat_core);
@@ -129,6 +134,7 @@ void context_params::collect_param_descrs(param_descrs & d) {
     d.insert("type_check", CPK_BOOL, "type checker (alias for well_sorted_check)", "true");
     d.insert("auto_config", CPK_BOOL, "use heuristics to automatically select solver and configure it", "true");
     d.insert("model_validate", CPK_BOOL, "validate models produced by solvers", "false");
+    d.insert("dump_models", CPK_BOOL, "dump models whenever check-sat returns sat", "false");
     d.insert("trace", CPK_BOOL, "trace generation for VCC", "false");
     d.insert("trace_file_name", CPK_STRING, "trace out file name (see option 'trace')", "z3.log");
     d.insert("debug_ref_count", CPK_BOOL, "debug support for AST reference counting", "false");

src/cmd_context/context_params.h

@@ -36,6 +36,7 @@ public:
     bool        m_well_sorted_check;
     bool        m_model;
     bool        m_model_validate;
+    bool        m_dump_models;
     bool        m_unsat_core;
     bool        m_smtlib2_compliant; // it must be here because it enable/disable the use of coercions in the ast_manager.
     unsigned    m_timeout;