// This file is part of the SV-Benchmarks collection of verification tasks:
// https://gitlab.com/sosy-lab/benchmarking/sv-benchmarks
//
// SPDX-FileCopyrightText: 2020 Aman Goel
// SPDX-FileCopyrightText: 2022 The SV-Benchmarks Community
//
// SPDX-License-Identifier: GPL-3.0-or-later

// This C program is converted from Btor2 by Btor2C version sha1:a0fa249
//   with arguments: { architecture=64, lazy_modulo=false, use_memmove=false, unroll_inner_loops=false, shortest_type=true, diff_type=true, decimal_constant=true, zero_init=false, sra_extend_sign=true }
// Comments from the original Btor2 file:
// ; source: https://github.com/aman-goel/avr/tree/92362931700b66684418a991d018c9fbdbebc06f/tests
// ; BTOR description generated by Yosys 0.9+431 (git sha1 4a3b5437, clang 4.0.1-6 -fPIC -Os) for module main.
extern unsigned char __VERIFIER_nondet_uchar();
extern unsigned short __VERIFIER_nondet_ushort();
extern unsigned int __VERIFIER_nondet_uint();
extern unsigned long __VERIFIER_nondet_ulong();
extern void abort(void);
extern void __assert_fail(const char *, const char *, unsigned int, const char *);
void reach_error() { __assert_fail("0", "counter_v.c", 0, "reach_error"); }
void __VERIFIER_assert(int cond) { if (!(cond)) { ERROR: { reach_error(); abort(); } } }
void assume_abort_if_not(int cond) { if (!cond) { abort(); } }
int main() {
  // Defining sorts ...
  typedef unsigned char SORT_1;  // BV with 1 bits
  const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1);
  const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1);
  typedef unsigned char SORT_4;  // BV with 4 bits
  const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4);
  const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1);
  // Initializing constants ...
  const SORT_4 var_5 = 1;
  const SORT_4 var_8 = 15;
  const SORT_1 var_12 = 1;
  // Collecting input declarations ...
  SORT_1 input_2;
  SORT_1 input_3;
  // Collecting state declarations ...
  SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4;
  // Initializing states ...
  SORT_4 init_7_arg_1 = var_5;
  state_6 = init_7_arg_1;
  for (;;) {
    // Getting external input values ...
    input_2 = __VERIFIER_nondet_uchar();
    input_2 = input_2 & mask_SORT_1;
    input_3 = __VERIFIER_nondet_uchar();
    input_3 = input_3 & mask_SORT_1;
    // Assuming invariants ...
    // Asserting properties ...
    SORT_4 var_9_arg_0 = state_6;
    SORT_4 var_9_arg_1 = var_8;
    SORT_1 var_9 = var_9_arg_0 != var_9_arg_1;
    SORT_1 var_13_arg_0 = var_9;
    SORT_1 var_13 = ~var_13_arg_0;
    var_13 = var_13 & mask_SORT_1;
    SORT_1 var_14_arg_0 = var_12;
    SORT_1 var_14_arg_1 = var_13;
    SORT_1 var_14 = var_14_arg_0 & var_14_arg_1;
    var_14 = var_14 & mask_SORT_1;
    SORT_1 bad_15_arg_0 = var_14;
    __VERIFIER_assert(!(bad_15_arg_0));
    // Computing next states ...
    SORT_4 var_18_arg_0 = state_6;
    SORT_4 var_18_arg_1 = var_8;
    SORT_1 var_18 = var_18_arg_0 == var_18_arg_1;
    SORT_4 var_17_arg_0 = state_6;
    SORT_4 var_17_arg_1 = var_5;
    SORT_4 var_17 = var_17_arg_0 + var_17_arg_1;
    var_17 = var_17 & mask_SORT_4;
    SORT_1 var_19_arg_0 = var_18;
    SORT_4 var_19_arg_1 = var_5;
    SORT_4 var_19_arg_2 = var_17;
    SORT_4 var_19 = var_19_arg_0 ? var_19_arg_1 : var_19_arg_2;
    SORT_1 var_20_arg_0 = input_3;
    SORT_4 var_20_arg_1 = var_19;
    SORT_4 var_20_arg_2 = state_6;
    SORT_4 var_20 = var_20_arg_0 ? var_20_arg_1 : var_20_arg_2;
    SORT_4 next_21_arg_1 = var_20;
    // Assigning next states ...
    state_6 = next_21_arg_1;
  }
  return 0;
}