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+/**CFile****************************************************************
+
+  FileName    [demo.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [ABC as a static library.]
+
+  Synopsis    [A demo program illustrating the use of ABC as a static library.]
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - June 20, 2005.]
+
+  Revision    [$Id: demo.c,v 1.00 2005/11/14 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include <stdio.h>
+#include <time.h>
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+// procedures to start and stop the ABC framework
+// (should be called before and after the ABC procedures are called)
+extern void   Abc_Start();
+extern void   Abc_Stop();
+
+// procedures to get the ABC framework and execute commands in it
+extern void * Abc_FrameGetGlobalFrame();
+extern int    Cmd_CommandExecute( void * pAbc, char * sCommand );
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    [The main() procedure.]
+
+  Description [This procedure compiles into a stand-alone program for 
+  DAG-aware rewriting of the AIGs. A BLIF or PLA file to be considered
+  for rewriting should be given as a command-line argument. Implementation 
+  of the rewriting is inspired by the paper: Per Bjesse, Arne Boralv, 
+  "DAG-aware circuit compression for formal verification", Proc. ICCAD 2004.]
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int main( int argc, char * argv[] )
+{
+    // parameters
+    int fUseResyn2  = 0;
+    int fPrintStats = 1;
+    int fVerify     = 1;
+    // variables
+    void * pAbc;
+    char * pFileName;
+    char Command[1000];
+    int clkRead, clkResyn, clkVer, clk;
+
+    //////////////////////////////////////////////////////////////////////////
+    // get the input file name
+    if ( argc != 2 )
+    {
+        printf( "Wrong number of command-line arguments.\n" );
+        return 1;
+    }
+    pFileName = argv[1];
+
+    //////////////////////////////////////////////////////////////////////////
+    // start the ABC framework
+    Abc_Start();
+    pAbc = Abc_FrameGetGlobalFrame();
+
+clk = clock();
+    //////////////////////////////////////////////////////////////////////////
+    // read the file
+    sprintf( Command, "read %s", pFileName );
+    if ( Cmd_CommandExecute( pAbc, Command ) )
+    {
+        fprintf( stdout, "Cannot execute command \"%s\".\n", Command );
+        return 1;
+    }
+
+    //////////////////////////////////////////////////////////////////////////
+    // balance
+    sprintf( Command, "balance" );
+    if ( Cmd_CommandExecute( pAbc, Command ) )
+    {
+        fprintf( stdout, "Cannot execute command \"%s\".\n", Command );
+        return 1;
+    }
+clkRead = clock() - clk;
+
+    //////////////////////////////////////////////////////////////////////////
+    // print stats
+    if ( fPrintStats )
+    {
+        sprintf( Command, "print_stats" );
+        if ( Cmd_CommandExecute( pAbc, Command ) )
+        {
+            fprintf( stdout, "Cannot execute command \"%s\".\n", Command );
+            return 1;
+        }
+    }
+
+clk = clock();
+    //////////////////////////////////////////////////////////////////////////
+    // synthesize
+    if ( fUseResyn2 )
+    {
+        sprintf( Command, "balance; rewrite -l; refactor -l; balance; rewrite -l; rewrite -lz; balance; refactor -lz; rewrite -lz; balance" );
+        if ( Cmd_CommandExecute( pAbc, Command ) )
+        {
+            fprintf( stdout, "Cannot execute command \"%s\".\n", Command );
+            return 1;
+        }
+    }
+    else
+    {
+        sprintf( Command, "balance; rewrite -l; rewrite -lz; balance; rewrite -lz; balance" );
+        if ( Cmd_CommandExecute( pAbc, Command ) )
+        {
+            fprintf( stdout, "Cannot execute command \"%s\".\n", Command );
+            return 1;
+        }
+    }
+clkResyn = clock() - clk;
+
+    //////////////////////////////////////////////////////////////////////////
+    // print stats
+    if ( fPrintStats )
+    {
+        sprintf( Command, "print_stats" );
+        if ( Cmd_CommandExecute( pAbc, Command ) )
+        {
+            fprintf( stdout, "Cannot execute command \"%s\".\n", Command );
+            return 1;
+        }
+    }
+
+    //////////////////////////////////////////////////////////////////////////
+    // write the result in blif
+    sprintf( Command, "write_blif result.blif" );
+    if ( Cmd_CommandExecute( pAbc, Command ) )
+    {
+        fprintf( stdout, "Cannot execute command \"%s\".\n", Command );
+        return 1;
+    }
+
+    //////////////////////////////////////////////////////////////////////////
+    // perform verification
+clk = clock();
+    if ( fVerify )
+    {
+        sprintf( Command, "cec %s result.blif", pFileName );
+        if ( Cmd_CommandExecute( pAbc, Command ) )
+        {
+            fprintf( stdout, "Cannot execute command \"%s\".\n", Command );
+            return 1;
+        }
+    }
+clkVer = clock() - clk;
+
+    printf( "Reading = %6.2f sec   ",     (float)(clkRead)/(float)(CLOCKS_PER_SEC) );
+    printf( "Rewriting = %6.2f sec   ",   (float)(clkResyn)/(float)(CLOCKS_PER_SEC) );
+    printf( "Verification = %6.2f sec\n", (float)(clkVer)/(float)(CLOCKS_PER_SEC) );
+
+    //////////////////////////////////////////////////////////////////////////
+    // stop the ABC framework
+    Abc_Stop();
+    return 0;
+}
+