char txt[100];
sprintf(txt, "Simplification of Edge n%d-n%d", src_node->index, tgt_node->index);
dump_section(pbqp->dump_file, 3, txt);
char txt[100];
sprintf(txt, "Simplification of Edge n%d-n%d", src_node->index, tgt_node->index);
dump_section(pbqp->dump_file, 3, txt);