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https://github.com/Z3Prover/z3
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update native func interp
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
parent
61d2654770
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c812d1e890
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@ -22,202 +22,79 @@ using System;
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namespace Microsoft.Z3
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{
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using Z3_context = System.IntPtr;
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using Z3_ast = System.IntPtr;
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using Z3_app = System.IntPtr;
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using Z3_sort = System.IntPtr;
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using Z3_func_decl = System.IntPtr;
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using Z3_model = System.IntPtr;
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using Z3_func_interp = System.IntPtr;
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using Z3_func_entry = System.IntPtr;
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/// <summary>
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/// A function interpretation is represented as a finite map and an 'else' value.
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/// Each entry in the finite map represents the value of a function given a set of arguments.
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/// </summary>
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public class NativeFuncInterp : IDisposable
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public class NativeFuncInterp
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{
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#if false
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/// <summary>
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/// An Entry object represents an element in the finite map used to encode
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/// a function interpretation.
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/// Evaluation entry of a function
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/// </summary>
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public class Entry : Z3Object
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public class Entry
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{
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/// <summary>
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/// Return the (symbolic) value of this entry.
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/// Argument values that define entry
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/// </summary>
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public Expr Value
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{
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get
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{
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return Expr.Create(Context, Native.Z3_func_entry_get_value(Context.nCtx, NativeObject));
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}
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}
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public Z3_ast[] Arguments;
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/// <summary>
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/// The number of arguments of the entry.
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/// Result of applying function to Arguments in the interpretation
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/// </summary>
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public uint NumArgs
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{
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get { return Native.Z3_func_entry_get_num_args(Context.nCtx, NativeObject); }
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}
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/// <summary>
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/// The arguments of the function entry.
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/// </summary>
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public Expr[] Args
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{
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get
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{
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uint n = NumArgs;
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Expr[] res = new Expr[n];
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for (uint i = 0; i < n; i++)
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res[i] = Expr.Create(Context, Native.Z3_func_entry_get_arg(Context.nCtx, NativeObject, i));
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return res;
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}
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}
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/// <summary>
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/// A string representation of the function entry.
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/// </summary>
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public override string ToString()
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{
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uint n = NumArgs;
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string res = "[";
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Expr[] args = Args;
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for (uint i = 0; i < n; i++)
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res += args[i] + ", ";
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return res + Value + "]";
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}
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#region Internal
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internal Entry(Context ctx, IntPtr obj) : base(ctx, obj) { Debug.Assert(ctx != null); }
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internal class DecRefQueue : IDecRefQueue
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{
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public DecRefQueue() : base() { }
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public DecRefQueue(uint move_limit) : base(move_limit) { }
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internal override void IncRef(Context ctx, IntPtr obj)
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{
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Native.Z3_func_entry_inc_ref(ctx.nCtx, obj);
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}
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internal override void DecRef(Context ctx, IntPtr obj)
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{
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Native.Z3_func_entry_dec_ref(ctx.nCtx, obj);
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}
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};
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internal override void IncRef(IntPtr o)
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{
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Context.FuncEntry_DRQ.IncAndClear(Context, o);
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base.IncRef(o);
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}
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internal override void DecRef(IntPtr o)
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{
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Context.FuncEntry_DRQ.Add(o);
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base.DecRef(o);
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}
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#endregion
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};
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public Z3_ast Result;
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}
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/// <summary>
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/// The number of entries in the function interpretation.
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/// Function that is interpreted
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/// </summary>
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public uint NumEntries
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{
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get { return Native.Z3_func_interp_get_num_entries(Context.nCtx, NativeObject); }
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}
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public Z3_func_decl Declaration;
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/// <summary>
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/// The entries in the function interpretation
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/// Set of non-default entries defining the function graph
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/// </summary>
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public Entry[] Entries
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{
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get
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{
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uint n = NumEntries;
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Entry[] res = new Entry[n];
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for (uint i = 0; i < n; i++)
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res[i] = new Entry(Context, Native.Z3_func_interp_get_entry(Context.nCtx, NativeObject, i));
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return res;
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}
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}
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public Entry[] Entries;
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/// <summary>
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/// The (symbolic) `else' value of the function interpretation.
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/// Default cause of the function interpretation
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/// </summary>
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public Expr Else
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public Z3_ast Else;
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#region Internal
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internal NativeFuncInterp(NativeContext ctx, NativeModel mdl, Z3_func_decl decl, Z3_func_interp fi)
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{
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get
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{
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return Expr.Create(Context, Native.Z3_func_interp_get_else(Context.nCtx, NativeObject));
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}
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}
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/// <summary>
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/// The arity of the function interpretation
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/// </summary>
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public uint Arity
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{
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get { return Native.Z3_func_interp_get_arity(Context.nCtx, NativeObject); }
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}
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/// <summary>
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/// A string representation of the function interpretation.
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/// </summary>
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public override string ToString()
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{
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string res = "";
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res += "[";
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foreach (Entry e in Entries)
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{
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uint n = e.NumArgs;
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if (n > 1) res += "[";
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Expr[] args = e.Args;
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for (uint i = 0; i < n; i++)
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{
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if (i != 0) res += ", ";
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res += args[i];
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}
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if (n > 1) res += "]";
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res += " -> " + e.Value + ", ";
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}
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res += "else -> " + Else;
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res += "]";
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return res;
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}
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#endif
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#region Internal
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NativeContext Context;
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IntPtr NativeObject;
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internal NativeFuncInterp(NativeContext ctx, IntPtr obj)
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{
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Context = ctx;
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NativeObject = obj;
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Debug.Assert(ctx != null);
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// inc-ref
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}
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Z3_context nCtx = ctx.nCtx;
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Native.Z3_func_interp_inc_ref(nCtx, fi);
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/// <summary>
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/// Finalizer.
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/// </summary>
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~NativeFuncInterp()
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{
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Dispose();
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}
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Declaration = decl;
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Else = Native.Z3_func_interp_get_else(nCtx, fi);
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uint numEntries = Native.Z3_func_interp_get_num_entries(nCtx, fi);
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uint numArgs = Native.Z3_func_interp_get_arity(nCtx, fi);
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Entries = new Entry[numEntries];
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/// <summary>
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/// Disposes of the underlying native Z3 object.
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/// </summary>
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public void Dispose()
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{
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if (NativeObject != IntPtr.Zero)
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for (uint j = 0; j < numEntries; ++j)
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{
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Native.Z3_func_interp_dec_ref(Context.nCtx, NativeObject);
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NativeObject = IntPtr.Zero;
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var entry = Native.Z3_func_interp_get_entry(nCtx, fi, j);
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Native.Z3_func_entry_inc_ref(nCtx, entry);
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Entries[j].Arguments = new Z3_ast[numArgs];
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for (uint i = 0; i < numArgs; ++i)
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Entries[j].Arguments[i] = Native.Z3_func_entry_get_arg(nCtx, entry, i);
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Entries[j].Result = Native.Z3_func_entry_get_value(nCtx, entry);
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Native.Z3_func_entry_dec_ref(nCtx, entry);
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}
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GC.SuppressFinalize(this);
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Native.Z3_func_interp_dec_ref(nCtx, fi);
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}
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@ -53,7 +53,7 @@ namespace Microsoft.Z3
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/// <returns>An expression if the function has an interpretation in the model, null otherwise.</returns>
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public Z3_ast ConstFuncInterp(Z3_func_decl f)
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{
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if (Native.Z3_get_arity(Context.nCtx, f) != 0)
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if (Native.Z3_get_arity(Context.nCtx, f) != 0)
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throw new Z3Exception("Non-zero arity functions have FunctionInterpretations as a model. Use FuncInterp.");
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return Native.Z3_model_get_const_interp(Context.nCtx, NativeObject, f);
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@ -68,8 +68,8 @@ namespace Microsoft.Z3
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{
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Z3_sort_kind sk = (Z3_sort_kind)Native.Z3_get_sort_kind(Context.nCtx, Native.Z3_get_range(Context.nCtx, f));
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if (Native.Z3_get_arity(Context.nCtx, f) == 0)
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if (Native.Z3_get_arity(Context.nCtx, f) == 0)
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{
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IntPtr n = Native.Z3_model_get_const_interp(Context.nCtx, NativeObject, f);
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if (Native.Z3_is_as_array(Context.nCtx, n) == 0)
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throw new Z3Exception("Argument was not an array constant");
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var fd = Native.Z3_get_as_array_func_decl(Context.nCtx, n);
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return new NativeFuncInterp(Context, fd);
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return new NativeFuncInterp(Context, this, f, fd);
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}
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}
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else
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@ -96,7 +96,7 @@ namespace Microsoft.Z3
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if (n == IntPtr.Zero)
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return null;
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else
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return new NativeFuncInterp(Context, n);
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return new NativeFuncInterp(Context, this, f, n);
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}
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}
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@ -188,7 +188,7 @@ namespace Microsoft.Z3
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for (uint i = 0; i < nConsts; i++)
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res[i] = Native.Z3_model_get_const_decl(Context.nCtx, NativeObject, i);
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for (uint i = 0; i < nFuncs; i++)
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res[nConsts + i] = Native.Z3_model_get_func_decl(Context.nCtx, NativeObject, i);
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res[nConsts + i] = Native.Z3_model_get_func_decl(Context.nCtx, NativeObject, i);
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return res;
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}
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}
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@ -238,9 +238,10 @@ namespace Microsoft.Z3
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/// <summary>
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/// Evaluate expression to a double, assuming it is a numeral already.
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/// </summary>
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public double Double(Z3_ast t) {
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public double Double(Z3_ast t)
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{
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var r = Eval(t, true);
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return Native.Z3_get_numeral_double(Context.nCtx, r);
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return Native.Z3_get_numeral_double(Context.nCtx, r);
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}
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/// <summary>
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/// the "universe" of the sort.
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/// </remarks>
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/// <seealso cref="NumSorts"/>
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/// <seealso cref="SortUniverse"/>
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public Z3_sort[] Sorts
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{
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get
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@ -283,15 +283,15 @@ namespace Microsoft.Z3
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}
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IntPtr NativeObject;
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NativeContext Context;
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IntPtr NativeObject;
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NativeContext Context;
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internal NativeModel(NativeContext ctx, IntPtr obj)
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{
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Context = ctx;
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NativeObject = obj;
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Context = ctx;
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NativeObject = obj;
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Debug.Assert(ctx != null);
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Native.Z3_model_inc_ref(ctx.nCtx, obj);
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Native.Z3_model_inc_ref(ctx.nCtx, obj);
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}
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/// Finalizer.
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/// </summary>
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~NativeModel()
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{
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Dispose();
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}
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{
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Dispose();
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}
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/// <summary>
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/// Disposes of the underlying native Z3 object.
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{
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if (NativeObject != IntPtr.Zero)
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{
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Native.Z3_model_dec_ref(Context.nCtx, NativeObject);
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NativeObject = IntPtr.Zero;
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Native.Z3_model_dec_ref(Context.nCtx, NativeObject);
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NativeObject = IntPtr.Zero;
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}
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GC.SuppressFinalize(this);
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}
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