fix abc temporary directory not apended before the abc raw file to look if it exist

Author: jeanlego

vtr_flow/scripts/run_vtr_flow.pl

@@ -654,12 +654,16 @@
 		$q = &system_with_timeout( $abc_path, "abc".$domain_itter.".out", $timeout, $temp_dir, "-c",
 			$abc_commands);
 
-		if ( not -e $post_abc_raw_blif 
-		or $q ne "success") {
+		if ( $q ne "success") {
 			$error_status = "failed: abc";
 			$error_code = 1;
 			last ABC_OPTIMIZATION;
 		}
+		elsif ( not -e "${temp_dir}/$post_abc_raw_blif" ) {
+			$error_status = "failed: abc did not produce the expected output: ${temp_dir}/${post_abc_raw_blif}";
+			$error_code = 1;
+			last ABC_OPTIMIZATION;
+		}
 
 		#restore the current valgrind flag
 		$valgrind = $skip_valgrind;