// This file is part of the SV-Benchmarks collection of verification tasks: // https://gitlab.com/sosy-lab/benchmarking/sv-benchmarks // // SPDX-FileCopyrightText: 2022 Jana (Philipp) Berger // // SPDX-License-Identifier: GPL-3.0-or-later // Prototype declarations of the functions used to communicate with the model checkers extern unsigned long __VERIFIER_nondet_ulong(); extern long __VERIFIER_nondet_long(); extern unsigned char __VERIFIER_nondet_uchar(); extern char __VERIFIER_nondet_char(); extern unsigned short __VERIFIER_nondet_ushort(); extern short __VERIFIER_nondet_short(); extern float __VERIFIER_nondet_float(); extern double __VERIFIER_nondet_double(); extern void abort(void); extern void __assert_fail(const char *, const char *, unsigned int, const char *) __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__noreturn__)); void reach_error() { __assert_fail("0", "Req1_Prop1_Batch27Amount250.c", 13, "reach_error"); } void __VERIFIER_assert(int cond) { if(!(cond)) { ERROR: {reach_error();abort();} } return; } void assume_abort_if_not(int cond) { if(!cond) { abort(); } } #define max(a,b) (((a) > (b)) ? (a) : (b)) #define min(a,b) (((a) < (b)) ? (a) : (b)) #define abs(a) (((a) < 0 ) ? -(a) : (a)) // Function prototypes // Internal control logic variables unsigned char isInitial = 0; // Signal variables signed char var_1_1 = 32; signed char var_1_3 = 25; signed char var_1_4 = 10; signed char var_1_5 = -10; signed char var_1_6 = -1; signed char var_1_7 = 0; signed char var_1_8 = 8; signed char var_1_9 = 32; signed char var_1_10 = 32; signed char var_1_11 = 2; signed char var_1_12 = 2; signed char var_1_13 = 1; signed char var_1_14 = -1; signed long int var_1_15 = 8; float var_1_16 = 9999999.6; float var_1_17 = 10.6; signed char var_1_21 = -32; signed char var_1_23 = 8; signed char var_1_24 = 1; unsigned long int var_1_25 = 32; unsigned char var_1_26 = 10; unsigned char var_1_27 = 128; unsigned short int var_1_28 = 0; double var_1_29 = 25.6; double var_1_30 = 7.75; double var_1_31 = 1.85; unsigned char var_1_33 = 1; unsigned char var_1_34 = 0; signed long int var_1_35 = 50; signed char var_1_36 = -2; signed char var_1_37 = -32; signed char var_1_38 = 5; unsigned long int var_1_39 = 32; unsigned char var_1_40 = 5; unsigned short int var_1_41 = 4; unsigned short int var_1_42 = 48215; unsigned short int var_1_43 = 10; unsigned short int var_1_44 = 1; signed char var_1_45 = 0; unsigned long int var_1_46 = 1524073358; unsigned long int var_1_48 = 16; unsigned long int var_1_49 = 3636503480; unsigned char var_1_51 = 10; unsigned char var_1_52 = 128; signed long int var_1_53 = -100; float var_1_54 = 7.5; float var_1_55 = 64.5; float var_1_56 = 1.5; float var_1_57 = 100000000000.375; float var_1_58 = 24.525; float var_1_59 = 0.875; float var_1_60 = 0.1; double var_1_61 = 127.5; unsigned char var_1_62 = 0; unsigned char var_1_63 = 1; // Calibration values // Last'ed variables signed char last_1_var_1_21 = -32; unsigned char last_1_var_1_33 = 1; unsigned long int last_1_var_1_39 = 32; unsigned short int last_1_var_1_41 = 4; signed char last_1_var_1_45 = 0; unsigned char last_1_var_1_51 = 10; unsigned char last_1_var_1_62 = 0; // Additional functions void initially(void) { } void step(void) { // From: Req5Batch27Amount250 if ((abs (last_1_var_1_51)) > -50) { if (last_1_var_1_33) { var_1_24 = (var_1_9 + var_1_3); } else { var_1_24 = (abs (min ((min (var_1_3 , 1)) , var_1_11))); } } else { if (last_1_var_1_62) { var_1_24 = ((var_1_11 + var_1_13) + (var_1_10 - var_1_3)); } } // From: Req20Batch27Amount250 if ((- var_1_24) > var_1_10) { if (! var_1_34) { var_1_51 = ((max (var_1_27 , var_1_52)) - var_1_9); } else { var_1_51 = var_1_10; } } // From: Req6Batch27Amount250 var_1_25 = (min ((min ((min (var_1_11 , var_1_10)) , var_1_7)) , var_1_4)); // From: Req10Batch27Amount250 if (last_1_var_1_33) { var_1_33 = (! var_1_34); } // From: Req14Batch27Amount250 var_1_40 = (var_1_9 + var_1_11); // From: Req15Batch27Amount250 if (-16 <= last_1_var_1_41) { if (var_1_5 == var_1_4) { var_1_41 = (max (var_1_10 , var_1_7)); } } else { var_1_41 = ((abs (var_1_42)) - var_1_10); } // From: Req16Batch27Amount250 if (var_1_25 != (var_1_7 | var_1_27)) { var_1_43 = var_1_10; } // From: Req17Batch27Amount250 signed long int stepLocal_10 = ~ var_1_9; if (stepLocal_10 >= var_1_14) { var_1_44 = (var_1_42 - var_1_4); } // From: Req23Batch27Amount250 unsigned char stepLocal_17 = var_1_34; if (stepLocal_17 && var_1_33) { var_1_57 = ((var_1_58 - var_1_59) + var_1_60); } // From: Req24Batch27Amount250 var_1_61 = var_1_56; // From: Req25Batch27Amount250 var_1_62 = var_1_63; // From: Req1Batch27Amount250 signed long int stepLocal_0 = -16; if (! (! var_1_62)) { var_1_1 = ((max ((var_1_3 - var_1_4) , var_1_5)) + var_1_6); } else { if (var_1_5 > stepLocal_0) { var_1_1 = (var_1_6 + var_1_4); } else { var_1_1 = (max (var_1_4 , (var_1_3 - var_1_7))); } } // From: Req2Batch27Amount250 if (((var_1_4 * var_1_41) + (max (5 , var_1_6))) > var_1_5) { if (! var_1_62) { var_1_8 = (((var_1_9 + var_1_10) - (var_1_11 + var_1_12)) - 16); } else { var_1_8 = (var_1_5 + (min ((var_1_12 + var_1_13) , (var_1_11 + var_1_14)))); } } else { var_1_8 = (var_1_6 + var_1_5); } // From: Req3Batch27Amount250 unsigned char stepLocal_1 = var_1_62; if ((var_1_16 - var_1_17) != var_1_57) { if (var_1_62) { var_1_15 = (max (var_1_13 , var_1_41)); } else { var_1_15 = (abs ((max (var_1_5 , var_1_6)) + (max (var_1_10 , 1)))); } } else { if (((var_1_4 * var_1_3) <= var_1_6) && stepLocal_1) { if (var_1_62) { var_1_15 = 0; } } } // From: Req8Batch27Amount250 unsigned char stepLocal_6 = var_1_33; if (stepLocal_6 && (var_1_8 < var_1_10)) { var_1_28 = var_1_44; } else { var_1_28 = (abs (var_1_9 + 128)); } // From: Req9Batch27Amount250 unsigned long int stepLocal_7 = var_1_11 ^ var_1_25; if (var_1_57 < var_1_17) { var_1_29 = (min (var_1_30 , var_1_31)); } else { if (var_1_15 > stepLocal_7) { var_1_29 = (abs (var_1_31)); } else { var_1_29 = var_1_31; } } // From: Req11Batch27Amount250 if ((- (var_1_31 * var_1_61)) < (var_1_16 + (min (var_1_30 , var_1_17)))) { var_1_35 = (var_1_15 + var_1_44); } // From: Req13Batch27Amount250 signed long int stepLocal_9 = var_1_4 * var_1_1; if (stepLocal_9 >= (var_1_9 / (min (var_1_10 , var_1_27)))) { var_1_39 = (max (var_1_35 , var_1_12)); } else { var_1_39 = ((max (var_1_27 , var_1_11)) + last_1_var_1_39); } // From: Req19Batch27Amount250 signed char stepLocal_12 = var_1_23; signed long int stepLocal_11 = var_1_35; if (stepLocal_11 <= var_1_43) { var_1_48 = ((abs (var_1_10)) + var_1_35); } else { if (var_1_3 <= stepLocal_12) { var_1_48 = (var_1_49 - (abs (var_1_46 - var_1_10))); } else { var_1_48 = (max (var_1_44 , var_1_43)); } } // From: Req21Batch27Amount250 unsigned char stepLocal_14 = var_1_27; signed long int stepLocal_13 = -16; if (stepLocal_14 >= var_1_51) { var_1_53 = ((var_1_28 + var_1_5) + var_1_10); } else { if (stepLocal_13 <= var_1_23) { var_1_53 = (var_1_43 - var_1_11); } else { var_1_53 = (min (var_1_42 , var_1_28)); } } // From: Req22Batch27Amount250 signed char stepLocal_16 = var_1_3; unsigned char stepLocal_15 = var_1_33 || var_1_34; if (stepLocal_15 && var_1_62) { if (var_1_62) { if ((abs (var_1_49 / var_1_42)) >= stepLocal_16) { if (49.3 <= var_1_30) { var_1_54 = (var_1_55 - var_1_56); } else { var_1_54 = var_1_30; } } else { var_1_54 = var_1_55; } } else { var_1_54 = var_1_30; } } else { var_1_54 = 100.6f; } // From: Req4Batch27Amount250 unsigned char stepLocal_5 = var_1_51; signed char stepLocal_4 = var_1_4; signed long int stepLocal_3 = var_1_4 & 0; signed long int stepLocal_2 = var_1_51 + var_1_53; if (stepLocal_5 >= var_1_7) { if (var_1_33) { if (var_1_62) { var_1_21 = (var_1_12 + (var_1_10 - var_1_11)); } else { var_1_21 = (min (var_1_23 , var_1_13)); } } else { if (last_1_var_1_21 > stepLocal_4) { if (stepLocal_3 == var_1_39) { var_1_21 = (abs (var_1_3)); } else { var_1_21 = (var_1_10 + (var_1_11 + var_1_14)); } } else { if (var_1_12 <= stepLocal_2) { var_1_21 = ((min (var_1_7 , var_1_3)) - var_1_12); } } } } // From: Req7Batch27Amount250 if (! (var_1_28 >= var_1_7)) { var_1_26 = (var_1_27 - var_1_11); } // From: Req18Batch27Amount250 if ((var_1_39 + var_1_28) < ((var_1_15 / var_1_9) | var_1_42)) { if (var_1_54 <= (abs (var_1_16))) { if (var_1_62) { var_1_45 = ((var_1_14 + var_1_13) + (max (var_1_9 , var_1_6))); } else { if (var_1_51 <= ((var_1_38 * last_1_var_1_45) * var_1_37)) { var_1_45 = (var_1_4 + (var_1_3 - var_1_12)); } else { var_1_45 = (max (var_1_12 , var_1_13)); } } } } else { var_1_45 = (var_1_9 - var_1_12); } // From: Req12Batch27Amount250 unsigned char stepLocal_8 = var_1_62; if (var_1_62 || stepLocal_8) { var_1_36 = (max ((max (var_1_10 , var_1_6)) , (min ((var_1_11 + var_1_37) , (var_1_12 + var_1_13))))); } else { if (! (var_1_37 < var_1_45)) { var_1_36 = (var_1_38 + var_1_9); } } } void updateVariables() { var_1_3 = __VERIFIER_nondet_char(); assume_abort_if_not(var_1_3 >= 0); assume_abort_if_not(var_1_3 <= 63); var_1_4 = __VERIFIER_nondet_char(); assume_abort_if_not(var_1_4 >= 0); assume_abort_if_not(var_1_4 <= 63); var_1_5 = __VERIFIER_nondet_char(); assume_abort_if_not(var_1_5 >= -63); assume_abort_if_not(var_1_5 <= 63); var_1_6 = __VERIFIER_nondet_char(); assume_abort_if_not(var_1_6 >= -63); assume_abort_if_not(var_1_6 <= 63); var_1_7 = __VERIFIER_nondet_char(); assume_abort_if_not(var_1_7 >= 0); assume_abort_if_not(var_1_7 <= 126); var_1_9 = __VERIFIER_nondet_char(); assume_abort_if_not(var_1_9 >= 31); assume_abort_if_not(var_1_9 <= 63); var_1_10 = __VERIFIER_nondet_char(); assume_abort_if_not(var_1_10 >= 31); assume_abort_if_not(var_1_10 <= 63); var_1_11 = __VERIFIER_nondet_char(); assume_abort_if_not(var_1_11 >= 0); assume_abort_if_not(var_1_11 <= 32); var_1_12 = __VERIFIER_nondet_char(); assume_abort_if_not(var_1_12 >= 0); assume_abort_if_not(var_1_12 <= 31); var_1_13 = __VERIFIER_nondet_char(); assume_abort_if_not(var_1_13 >= -31); assume_abort_if_not(var_1_13 <= 31); var_1_14 = __VERIFIER_nondet_char(); assume_abort_if_not(var_1_14 >= -31); assume_abort_if_not(var_1_14 <= 31); var_1_16 = __VERIFIER_nondet_float(); assume_abort_if_not((var_1_16 >= 0.0F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 9223372.036854776000e+12F && var_1_16 >= 1.0e-20F )); var_1_17 = __VERIFIER_nondet_float(); assume_abort_if_not((var_1_17 >= 0.0F && var_1_17 <= -1.0e-20F) || (var_1_17 <= 9223372.036854776000e+12F && var_1_17 >= 1.0e-20F )); var_1_23 = __VERIFIER_nondet_char(); assume_abort_if_not(var_1_23 >= -127); assume_abort_if_not(var_1_23 <= 126); var_1_27 = __VERIFIER_nondet_uchar(); assume_abort_if_not(var_1_27 >= 127); assume_abort_if_not(var_1_27 <= 254); var_1_30 = __VERIFIER_nondet_double(); assume_abort_if_not((var_1_30 >= -922337.2036854765600e+13F && var_1_30 <= -1.0e-20F) || (var_1_30 <= 9223372.036854765600e+12F && var_1_30 >= 1.0e-20F )); var_1_31 = __VERIFIER_nondet_double(); assume_abort_if_not((var_1_31 >= -922337.2036854765600e+13F && var_1_31 <= -1.0e-20F) || (var_1_31 <= 9223372.036854765600e+12F && var_1_31 >= 1.0e-20F )); var_1_34 = __VERIFIER_nondet_uchar(); assume_abort_if_not(var_1_34 >= 0); assume_abort_if_not(var_1_34 <= 0); var_1_37 = __VERIFIER_nondet_char(); assume_abort_if_not(var_1_37 >= -63); assume_abort_if_not(var_1_37 <= 63); var_1_38 = __VERIFIER_nondet_char(); assume_abort_if_not(var_1_38 >= -63); assume_abort_if_not(var_1_38 <= 63); var_1_42 = __VERIFIER_nondet_ushort(); assume_abort_if_not(var_1_42 >= 32767); assume_abort_if_not(var_1_42 <= 65534); var_1_46 = __VERIFIER_nondet_ulong(); assume_abort_if_not(var_1_46 >= 1073741823); assume_abort_if_not(var_1_46 <= 2147483647); var_1_49 = __VERIFIER_nondet_ulong(); assume_abort_if_not(var_1_49 >= 2147483647); assume_abort_if_not(var_1_49 <= 4294967294); var_1_52 = __VERIFIER_nondet_uchar(); assume_abort_if_not(var_1_52 >= 127); assume_abort_if_not(var_1_52 <= 254); var_1_55 = __VERIFIER_nondet_float(); assume_abort_if_not((var_1_55 >= 0.0F && var_1_55 <= -1.0e-20F) || (var_1_55 <= 9223372.036854765600e+12F && var_1_55 >= 1.0e-20F )); var_1_56 = __VERIFIER_nondet_float(); assume_abort_if_not((var_1_56 >= 0.0F && var_1_56 <= -1.0e-20F) || (var_1_56 <= 9223372.036854765600e+12F && var_1_56 >= 1.0e-20F )); var_1_58 = __VERIFIER_nondet_float(); assume_abort_if_not((var_1_58 >= 0.0F && var_1_58 <= -1.0e-20F) || (var_1_58 <= 4611686.018427382800e+12F && var_1_58 >= 1.0e-20F )); var_1_59 = __VERIFIER_nondet_float(); assume_abort_if_not((var_1_59 >= 0.0F && var_1_59 <= -1.0e-20F) || (var_1_59 <= 4611686.018427382800e+12F && var_1_59 >= 1.0e-20F )); var_1_60 = __VERIFIER_nondet_float(); assume_abort_if_not((var_1_60 >= -461168.6018427382800e+13F && var_1_60 <= -1.0e-20F) || (var_1_60 <= 4611686.018427382800e+12F && var_1_60 >= 1.0e-20F )); var_1_63 = __VERIFIER_nondet_uchar(); assume_abort_if_not(var_1_63 >= 1); assume_abort_if_not(var_1_63 <= 1); } void updateLastVariables() { last_1_var_1_21 = var_1_21; last_1_var_1_33 = var_1_33; last_1_var_1_39 = var_1_39; last_1_var_1_41 = var_1_41; last_1_var_1_45 = var_1_45; last_1_var_1_51 = var_1_51; last_1_var_1_62 = var_1_62; } int property() { return (((((((((((((((((((((((((! (! var_1_62)) ? (var_1_1 == ((signed char) ((max ((var_1_3 - var_1_4) , var_1_5)) + var_1_6))) : ((var_1_5 > -16) ? (var_1_1 == ((signed char) (var_1_6 + var_1_4))) : (var_1_1 == ((signed char) (max (var_1_4 , (var_1_3 - var_1_7))))))) && ((((var_1_4 * var_1_41) + (max (5 , var_1_6))) > var_1_5) ? ((! var_1_62) ? (var_1_8 == ((signed char) (((var_1_9 + var_1_10) - (var_1_11 + var_1_12)) - 16))) : (var_1_8 == ((signed char) (var_1_5 + (min ((var_1_12 + var_1_13) , (var_1_11 + var_1_14))))))) : (var_1_8 == ((signed char) (var_1_6 + var_1_5))))) && (((var_1_16 - var_1_17) != var_1_57) ? (var_1_62 ? (var_1_15 == ((signed long int) (max (var_1_13 , var_1_41)))) : (var_1_15 == ((signed long int) (abs ((max (var_1_5 , var_1_6)) + (max (var_1_10 , 1))))))) : ((((var_1_4 * var_1_3) <= var_1_6) && var_1_62) ? (var_1_62 ? (var_1_15 == ((signed long int) 0)) : 1) : 1))) && ((var_1_51 >= var_1_7) ? (var_1_33 ? (var_1_62 ? (var_1_21 == ((signed char) (var_1_12 + (var_1_10 - var_1_11)))) : (var_1_21 == ((signed char) (min (var_1_23 , var_1_13))))) : ((last_1_var_1_21 > var_1_4) ? (((var_1_4 & 0) == var_1_39) ? (var_1_21 == ((signed char) (abs (var_1_3)))) : (var_1_21 == ((signed char) (var_1_10 + (var_1_11 + var_1_14))))) : ((var_1_12 <= (var_1_51 + var_1_53)) ? (var_1_21 == ((signed char) ((min (var_1_7 , var_1_3)) - var_1_12))) : 1))) : 1)) && (((abs (last_1_var_1_51)) > -50) ? (last_1_var_1_33 ? (var_1_24 == ((signed char) (var_1_9 + var_1_3))) : (var_1_24 == ((signed char) (abs (min ((min (var_1_3 , 1)) , var_1_11)))))) : (last_1_var_1_62 ? (var_1_24 == ((signed char) ((var_1_11 + var_1_13) + (var_1_10 - var_1_3)))) : 1))) && (var_1_25 == ((unsigned long int) (min ((min ((min (var_1_11 , var_1_10)) , var_1_7)) , var_1_4))))) && ((! (var_1_28 >= var_1_7)) ? (var_1_26 == ((unsigned char) (var_1_27 - var_1_11))) : 1)) && ((var_1_33 && (var_1_8 < var_1_10)) ? (var_1_28 == ((unsigned short int) var_1_44)) : (var_1_28 == ((unsigned short int) (abs (var_1_9 + 128)))))) && ((var_1_57 < var_1_17) ? (var_1_29 == ((double) (min (var_1_30 , var_1_31)))) : ((var_1_15 > (var_1_11 ^ var_1_25)) ? (var_1_29 == ((double) (abs (var_1_31)))) : (var_1_29 == ((double) var_1_31))))) && (last_1_var_1_33 ? (var_1_33 == ((unsigned char) (! var_1_34))) : 1)) && (((- (var_1_31 * var_1_61)) < (var_1_16 + (min (var_1_30 , var_1_17)))) ? (var_1_35 == ((signed long int) (var_1_15 + var_1_44))) : 1)) && ((var_1_62 || var_1_62) ? (var_1_36 == ((signed char) (max ((max (var_1_10 , var_1_6)) , (min ((var_1_11 + var_1_37) , (var_1_12 + var_1_13))))))) : ((! (var_1_37 < var_1_45)) ? (var_1_36 == ((signed char) (var_1_38 + var_1_9))) : 1))) && (((var_1_4 * var_1_1) >= (var_1_9 / (min (var_1_10 , var_1_27)))) ? (var_1_39 == ((unsigned long int) (max (var_1_35 , var_1_12)))) : (var_1_39 == ((unsigned long int) ((max (var_1_27 , var_1_11)) + last_1_var_1_39))))) && (var_1_40 == ((unsigned char) (var_1_9 + var_1_11)))) && ((-16 <= last_1_var_1_41) ? ((var_1_5 == var_1_4) ? (var_1_41 == ((unsigned short int) (max (var_1_10 , var_1_7)))) : 1) : (var_1_41 == ((unsigned short int) ((abs (var_1_42)) - var_1_10))))) && ((var_1_25 != (var_1_7 | var_1_27)) ? (var_1_43 == ((unsigned short int) var_1_10)) : 1)) && (((~ var_1_9) >= var_1_14) ? (var_1_44 == ((unsigned short int) (var_1_42 - var_1_4))) : 1)) && (((var_1_39 + var_1_28) < ((var_1_15 / var_1_9) | var_1_42)) ? ((var_1_54 <= (abs (var_1_16))) ? (var_1_62 ? (var_1_45 == ((signed char) ((var_1_14 + var_1_13) + (max (var_1_9 , var_1_6))))) : ((var_1_51 <= ((var_1_38 * last_1_var_1_45) * var_1_37)) ? (var_1_45 == ((signed char) (var_1_4 + (var_1_3 - var_1_12)))) : (var_1_45 == ((signed char) (max (var_1_12 , var_1_13)))))) : 1) : (var_1_45 == ((signed char) (var_1_9 - var_1_12))))) && ((var_1_35 <= var_1_43) ? (var_1_48 == ((unsigned long int) ((abs (var_1_10)) + var_1_35))) : ((var_1_3 <= var_1_23) ? (var_1_48 == ((unsigned long int) (var_1_49 - (abs (var_1_46 - var_1_10))))) : (var_1_48 == ((unsigned long int) (max (var_1_44 , var_1_43))))))) && (((- var_1_24) > var_1_10) ? ((! var_1_34) ? (var_1_51 == ((unsigned char) ((max (var_1_27 , var_1_52)) - var_1_9))) : (var_1_51 == ((unsigned char) var_1_10))) : 1)) && ((var_1_27 >= var_1_51) ? (var_1_53 == ((signed long int) ((var_1_28 + var_1_5) + var_1_10))) : ((-16 <= var_1_23) ? (var_1_53 == ((signed long int) (var_1_43 - var_1_11))) : (var_1_53 == ((signed long int) (min (var_1_42 , var_1_28))))))) && (((var_1_33 || var_1_34) && var_1_62) ? (var_1_62 ? (((abs (var_1_49 / var_1_42)) >= var_1_3) ? ((49.3 <= var_1_30) ? (var_1_54 == ((float) (var_1_55 - var_1_56))) : (var_1_54 == ((float) var_1_30))) : (var_1_54 == ((float) var_1_55))) : (var_1_54 == ((float) var_1_30))) : (var_1_54 == ((float) 100.6f)))) && ((var_1_34 && var_1_33) ? (var_1_57 == ((float) ((var_1_58 - var_1_59) + var_1_60))) : 1)) && (var_1_61 == ((double) var_1_56))) && (var_1_62 == ((unsigned char) var_1_63)) ; } int main(void) { isInitial = 1; initially(); while (1) { updateLastVariables(); updateVariables(); step(); __VERIFIER_assert(property()); isInitial = 0; } return 0; }