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https://github.com/Z3Prover/z3
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re-indenting interp and duality
This commit is contained in:
Ken McMillan
parent
e1303e1eab
commit
af444beb2e
38 changed files with 20225 additions and 20225 deletions
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@ -1,20 +1,20 @@
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/*++
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Copyright (c) 2011 Microsoft Corporation
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Copyright (c) 2011 Microsoft Corporation
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Module Name:
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Module Name:
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api_interp.cpp
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api_interp.cpp
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Abstract:
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API for interpolation
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Abstract:
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API for interpolation
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Author:
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Author:
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Ken McMillan
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Ken McMillan
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Revision History:
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Revision History:
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--*/
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--*/
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#include<iostream>
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#include<sstream>
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#include<vector>
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@ -191,19 +191,19 @@ extern "C" {
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Z3_interpolation_options
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Z3_mk_interpolation_options(){
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Z3_mk_interpolation_options(){
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return (Z3_interpolation_options) new interpolation_options_struct;
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}
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void
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Z3_del_interpolation_options(Z3_interpolation_options opts){
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Z3_del_interpolation_options(Z3_interpolation_options opts){
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delete opts;
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}
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void
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Z3_set_interpolation_option(Z3_interpolation_options opts,
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Z3_string name,
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Z3_string value){
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Z3_set_interpolation_option(Z3_interpolation_options opts,
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Z3_string name,
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Z3_string value){
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opts->map[name] = value;
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}
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@ -412,11 +412,11 @@ extern "C" {
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Z3_ast foo = Z3_mk_interpolant(ctx, and_vec(ctx, c));
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chs[parents[i]].push_back(foo);
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}
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{
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svector<Z3_ast> &c = chs[num - 1];
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c.push_back(cnsts[num - 1]);
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res = and_vec(ctx, c);
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}
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{
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svector<Z3_ast> &c = chs[num - 1];
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c.push_back(cnsts[num - 1]);
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res = and_vec(ctx, c);
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}
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}
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Z3_inc_ref(ctx, res);
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return res;
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@ -620,8 +620,8 @@ extern "C" {
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for (unsigned j = 0; j < num - 1; j++)
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if (read_parents[j] == SHRT_MAX){
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read_error << "formula " << j + 1 << ": unreferenced";
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goto fail;
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read_error << "formula " << j + 1 << ": unreferenced";
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goto fail;
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}
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*_num = num;
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@ -643,69 +643,69 @@ extern "C" {
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#define IZ3_ROOT SHRT_MAX
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/** This function uses Z3 to determine satisfiability of a set of
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constraints. If UNSAT, an interpolant is returned, based on the
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refutation generated by Z3. If SAT, a model is returned.
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constraints. If UNSAT, an interpolant is returned, based on the
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refutation generated by Z3. If SAT, a model is returned.
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If "parents" is non-null, computes a tree interpolant. The tree is
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defined by the array "parents". This array maps each formula in
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the tree to its parent, where formulas are indicated by their
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integer index in "cnsts". The parent of formula n must have index
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greater than n. The last formula is the root of the tree. Its
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parent entry should be the constant IZ3_ROOT.
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If "parents" is non-null, computes a tree interpolant. The tree is
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defined by the array "parents". This array maps each formula in
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the tree to its parent, where formulas are indicated by their
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integer index in "cnsts". The parent of formula n must have index
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greater than n. The last formula is the root of the tree. Its
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parent entry should be the constant IZ3_ROOT.
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If "parents" is null, computes a sequence interpolant.
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If "parents" is null, computes a sequence interpolant.
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\param ctx The Z3 context. Must be generated by iz3_mk_context
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\param num The number of constraints in the sequence
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\param cnsts Array of constraints (AST's in context ctx)
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\param parents The parents vector defining the tree structure
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\param options Interpolation options (may be NULL)
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\param interps Array to return interpolants (size at least num-1, may be NULL)
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\param model Returns a Z3 model if constraints SAT (may be NULL)
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\param labels Returns relevant labels if SAT (may be NULL)
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\param incremental
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\param ctx The Z3 context. Must be generated by iz3_mk_context
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\param num The number of constraints in the sequence
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\param cnsts Array of constraints (AST's in context ctx)
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\param parents The parents vector defining the tree structure
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\param options Interpolation options (may be NULL)
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\param interps Array to return interpolants (size at least num-1, may be NULL)
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\param model Returns a Z3 model if constraints SAT (may be NULL)
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\param labels Returns relevant labels if SAT (may be NULL)
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\param incremental
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VERY IMPORTANT: All the Z3 formulas in cnsts must be in Z3
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context ctx. The model and interpolants returned are also
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in this context.
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VERY IMPORTANT: All the Z3 formulas in cnsts must be in Z3
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context ctx. The model and interpolants returned are also
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in this context.
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The return code is as in Z3_check_assumptions, that is,
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The return code is as in Z3_check_assumptions, that is,
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Z3_L_FALSE = constraints UNSAT (interpolants returned)
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Z3_L_TRUE = constraints SAT (model returned)
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Z3_L_UNDEF = Z3 produced no result, or interpolation not possible
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Z3_L_FALSE = constraints UNSAT (interpolants returned)
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Z3_L_TRUE = constraints SAT (model returned)
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Z3_L_UNDEF = Z3 produced no result, or interpolation not possible
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Currently, this function supports integer and boolean variables,
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as well as arrays over these types, with linear arithmetic,
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uninterpreted functions and quantifiers over integers (that is
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AUFLIA). Interpolants are produced in AULIA. However, some
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uses of array operations may cause quantifiers to appear in the
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interpolants even when there are no quantifiers in the input formulas.
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Although quantifiers may appear in the input formulas, Z3 may give up in
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this case, returning Z3_L_UNDEF.
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Currently, this function supports integer and boolean variables,
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as well as arrays over these types, with linear arithmetic,
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uninterpreted functions and quantifiers over integers (that is
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AUFLIA). Interpolants are produced in AULIA. However, some
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uses of array operations may cause quantifiers to appear in the
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interpolants even when there are no quantifiers in the input formulas.
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Although quantifiers may appear in the input formulas, Z3 may give up in
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this case, returning Z3_L_UNDEF.
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If "incremental" is true, cnsts must contain exactly the set of
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formulas that are currently asserted in the context. If false,
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there must be no formulas currently asserted in the context.
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Setting "incremental" to true makes it posisble to incrementally
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add and remove constraints from the context until the context
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becomes UNSAT, at which point an interpolant is computed. Caution
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must be used, however. Before popping the context, if you wish to
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keep the interolant formulas, you *must* preserve them by using
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Z3_persist_ast. Also, if you want to simplify the interpolant
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formulas using Z3_simplify, you must first pop all of the
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assertions in the context (or use a different context). Otherwise,
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the formulas will be simplified *relative* to these constraints,
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which is almost certainly not what you want.
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If "incremental" is true, cnsts must contain exactly the set of
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formulas that are currently asserted in the context. If false,
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there must be no formulas currently asserted in the context.
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Setting "incremental" to true makes it posisble to incrementally
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add and remove constraints from the context until the context
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becomes UNSAT, at which point an interpolant is computed. Caution
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must be used, however. Before popping the context, if you wish to
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keep the interolant formulas, you *must* preserve them by using
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Z3_persist_ast. Also, if you want to simplify the interpolant
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formulas using Z3_simplify, you must first pop all of the
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assertions in the context (or use a different context). Otherwise,
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the formulas will be simplified *relative* to these constraints,
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which is almost certainly not what you want.
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Current limitations on tree interpolants. In a tree interpolation
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problem, each constant (0-ary function symbol) must occur only
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along one path from root to leaf. Function symbols (of arity > 0)
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are considered to have global scope (i.e., may appear in any
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interpolant formula).
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Current limitations on tree interpolants. In a tree interpolation
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problem, each constant (0-ary function symbol) must occur only
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along one path from root to leaf. Function symbols (of arity > 0)
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are considered to have global scope (i.e., may appear in any
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interpolant formula).
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def_API('Z3_interpolate', BOOL, (_in(CONTEXT), _in(UINT), _in_array(1, AST), _in_array(1, UINT), _in(PARAMS), _out_array(1, AST), _out(MODEL), _out(LITERALS), _in(UINT), _in(UINT), _in_array(9, AST)))
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def_API('Z3_interpolate', BOOL, (_in(CONTEXT), _in(UINT), _in_array(1, AST), _in_array(1, UINT), _in(PARAMS), _out_array(1, AST), _out(MODEL), _out(LITERALS), _in(UINT), _in(UINT), _in_array(9, AST)))
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*/
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Z3_lbool Z3_API Z3_interpolate(__in Z3_context ctx,
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