java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv --cacsl2boogietranslator.bitprecise.bitfields false -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-408c70d-m [2018-04-13 04:20:56,904 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-13 04:20:56,906 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-13 04:20:56,917 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-13 04:20:56,918 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-13 04:20:56,918 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-13 04:20:56,919 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-13 04:20:56,920 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-13 04:20:56,922 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-13 04:20:56,923 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-13 04:20:56,923 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-13 04:20:56,923 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-13 04:20:56,924 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-13 04:20:56,925 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-13 04:20:56,926 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-13 04:20:56,927 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-13 04:20:56,929 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-13 04:20:56,930 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-13 04:20:56,931 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-13 04:20:56,932 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-13 04:20:56,934 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-04-13 04:20:56,938 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-13 04:20:56,938 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-13 04:20:56,939 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf [2018-04-13 04:20:56,949 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-13 04:20:56,949 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-13 04:20:56,950 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-04-13 04:20:56,950 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-04-13 04:20:56,950 INFO L133 SettingsManager]: * Use SBE=true [2018-04-13 04:20:56,950 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-13 04:20:56,951 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-13 04:20:56,951 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-13 04:20:56,951 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-13 04:20:56,951 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-13 04:20:56,951 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-13 04:20:56,951 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-13 04:20:56,951 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-04-13 04:20:56,952 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-13 04:20:56,952 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-13 04:20:56,952 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-13 04:20:56,952 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-04-13 04:20:56,952 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-04-13 04:20:56,952 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-13 04:20:56,953 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-13 04:20:56,953 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-13 04:20:56,953 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-13 04:20:56,953 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-13 04:20:56,953 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Bitprecise bitfields -> false [2018-04-13 04:20:56,982 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-13 04:20:56,994 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-13 04:20:56,998 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-13 04:20:56,999 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-13 04:20:57,000 INFO L276 PluginConnector]: CDTParser initialized [2018-04-13 04:20:57,000 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,306 INFO L225 CDTParser]: Created temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG9b531c0e4 [2018-04-13 04:20:57,426 INFO L287 CDTParser]: IsIndexed: true [2018-04-13 04:20:57,427 INFO L288 CDTParser]: Found 1 translation units. [2018-04-13 04:20:57,427 INFO L168 CDTParser]: Scanning openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,435 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-13 04:20:57,435 INFO L215 ultiparseSymbolTable]: [2018-04-13 04:20:57,435 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-13 04:20:57,435 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____bswap_32 ('__bswap_32') in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,436 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____bswap_64 ('__bswap_64') in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,436 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,436 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmp ('cstrcmp') in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,436 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-13 04:20:57,436 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____uid_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,436 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__pthread_attr_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,436 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____uint64_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,436 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__ssize_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,436 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__pthread_once_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,436 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____fsword_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,437 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____int64_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,437 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__pthread_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,437 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__timer_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,437 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____fd_mask in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,437 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__wchar_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,437 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____int8_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,437 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____useconds_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,437 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____nlink_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,437 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__register_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,437 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____sig_atomic_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,438 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____uint8_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,438 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____clock_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,438 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__loff_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,438 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__pthread_condattr_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,438 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__u_int8_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,438 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____key_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,438 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__ldiv_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,438 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__int8_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,438 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____fsblkcnt64_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,438 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__u_int64_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,439 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____daddr_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,439 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__int64_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,439 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____syscall_slong_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,439 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____time_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,439 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____timer_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,439 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__fd_mask in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,439 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__ushort in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,439 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____blkcnt_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,439 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__fsfilcnt_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,439 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____ssize_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,440 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__int32_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,440 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____off_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,440 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__ino_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,440 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__pthread_mutex_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,440 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__clockid_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,440 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____fsfilcnt64_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,440 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__key_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,440 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__dev_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,440 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____u_int in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,440 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__time_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,441 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__pthread_rwlockattr_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,441 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____blkcnt64_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,441 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__sigset_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,441 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__nlink_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,441 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__uint in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,441 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____ino64_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,441 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__id_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,441 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__u_quad_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,441 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____off64_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,441 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____caddr_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,441 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____u_char in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,441 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__pthread_key_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____syscall_ulong_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__blkcnt_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__pthread_rwlock_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__u_int32_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__fd_set in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__int16_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____dev_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____fsblkcnt_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__uid_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____pthread_list_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__pthread_barrierattr_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__lldiv_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__fsblkcnt_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____suseconds_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____int32_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____uint16_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____id_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__u_int in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____quad_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,442 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____gid_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,443 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____blksize_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,443 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____qaddr_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,443 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____rlim64_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,443 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____fsfilcnt_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,443 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__pthread_mutexattr_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,443 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__size_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,443 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____ino_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,443 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____pid_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,443 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__pthread_barrier_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,443 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____WAIT_STATUS in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,443 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____loff_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,444 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__u_long in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,444 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____u_quad_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,444 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____intptr_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,444 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____rlim_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,444 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__pthread_cond_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,444 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__fsid_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,444 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__pid_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,444 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__daddr_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,444 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__quad_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,444 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____clockid_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,444 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__suseconds_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,444 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____u_short in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,445 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__clock_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,445 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__mode_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,445 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____socklen_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,445 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__off_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,445 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____int16_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,445 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__u_short in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,445 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__u_char in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,445 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____uint32_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,445 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____u_long in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,445 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__div_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,445 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__u_int16_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,445 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__gid_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,446 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__ulong in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,446 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____fsid_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,446 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__caddr_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,446 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__pthread_spinlock_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,446 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____sigset_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,446 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__blksize_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,446 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____mode_t in openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:57,458 INFO L330 CDTParser]: Deleted temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG9b531c0e4 [2018-04-13 04:20:57,462 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-13 04:20:57,463 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-13 04:20:57,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-13 04:20:57,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-13 04:20:57,467 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-13 04:20:57,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 04:20:57" (1/1) ... [2018-04-13 04:20:57,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c73c639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:20:57, skipping insertion in model container [2018-04-13 04:20:57,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 04:20:57" (1/1) ... [2018-04-13 04:20:57,479 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-13 04:20:57,500 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-13 04:20:57,621 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-13 04:20:57,657 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-13 04:20:57,662 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 112 non ball SCCs. Number of states in SCCs 112. [2018-04-13 04:20:57,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:20:57 WrapperNode [2018-04-13 04:20:57,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-13 04:20:57,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-13 04:20:57,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-13 04:20:57,690 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-13 04:20:57,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:20:57" (1/1) ... [2018-04-13 04:20:57,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:20:57" (1/1) ... [2018-04-13 04:20:57,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:20:57" (1/1) ... [2018-04-13 04:20:57,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:20:57" (1/1) ... [2018-04-13 04:20:57,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:20:57" (1/1) ... [2018-04-13 04:20:57,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:20:57" (1/1) ... [2018-04-13 04:20:57,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:20:57" (1/1) ... [2018-04-13 04:20:57,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-13 04:20:57,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-13 04:20:57,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-13 04:20:57,725 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-13 04:20:57,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:20:57" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-13 04:20:57,815 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-13 04:20:57,815 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-13 04:20:57,815 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____bswap_32 [2018-04-13 04:20:57,815 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____bswap_64 [2018-04-13 04:20:57,815 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmp [2018-04-13 04:20:57,815 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-13 04:20:57,815 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____bswap_32 [2018-04-13 04:20:57,815 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i____bswap_64 [2018-04-13 04:20:57,815 INFO L128 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-04-13 04:20:57,815 INFO L128 BoogieDeclarations]: Found specification of procedure atof [2018-04-13 04:20:57,815 INFO L128 BoogieDeclarations]: Found specification of procedure atoi [2018-04-13 04:20:57,816 INFO L128 BoogieDeclarations]: Found specification of procedure atol [2018-04-13 04:20:57,816 INFO L128 BoogieDeclarations]: Found specification of procedure atoll [2018-04-13 04:20:57,816 INFO L128 BoogieDeclarations]: Found specification of procedure strtod [2018-04-13 04:20:57,816 INFO L128 BoogieDeclarations]: Found specification of procedure strtof [2018-04-13 04:20:57,816 INFO L128 BoogieDeclarations]: Found specification of procedure strtold [2018-04-13 04:20:57,816 INFO L128 BoogieDeclarations]: Found specification of procedure strtol [2018-04-13 04:20:57,816 INFO L128 BoogieDeclarations]: Found specification of procedure strtoul [2018-04-13 04:20:57,816 INFO L128 BoogieDeclarations]: Found specification of procedure strtoq [2018-04-13 04:20:57,816 INFO L128 BoogieDeclarations]: Found specification of procedure strtouq [2018-04-13 04:20:57,816 INFO L128 BoogieDeclarations]: Found specification of procedure strtoll [2018-04-13 04:20:57,816 INFO L128 BoogieDeclarations]: Found specification of procedure strtoull [2018-04-13 04:20:57,816 INFO L128 BoogieDeclarations]: Found specification of procedure l64a [2018-04-13 04:20:57,817 INFO L128 BoogieDeclarations]: Found specification of procedure a64l [2018-04-13 04:20:57,817 INFO L128 BoogieDeclarations]: Found specification of procedure select [2018-04-13 04:20:57,817 INFO L128 BoogieDeclarations]: Found specification of procedure pselect [2018-04-13 04:20:57,817 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-04-13 04:20:57,817 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-04-13 04:20:57,817 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-04-13 04:20:57,817 INFO L128 BoogieDeclarations]: Found specification of procedure random [2018-04-13 04:20:57,817 INFO L128 BoogieDeclarations]: Found specification of procedure srandom [2018-04-13 04:20:57,817 INFO L128 BoogieDeclarations]: Found specification of procedure initstate [2018-04-13 04:20:57,817 INFO L128 BoogieDeclarations]: Found specification of procedure setstate [2018-04-13 04:20:57,817 INFO L128 BoogieDeclarations]: Found specification of procedure random_r [2018-04-13 04:20:57,818 INFO L128 BoogieDeclarations]: Found specification of procedure srandom_r [2018-04-13 04:20:57,818 INFO L128 BoogieDeclarations]: Found specification of procedure initstate_r [2018-04-13 04:20:57,818 INFO L128 BoogieDeclarations]: Found specification of procedure setstate_r [2018-04-13 04:20:57,818 INFO L128 BoogieDeclarations]: Found specification of procedure rand [2018-04-13 04:20:57,818 INFO L128 BoogieDeclarations]: Found specification of procedure srand [2018-04-13 04:20:57,818 INFO L128 BoogieDeclarations]: Found specification of procedure rand_r [2018-04-13 04:20:57,818 INFO L128 BoogieDeclarations]: Found specification of procedure drand48 [2018-04-13 04:20:57,818 INFO L128 BoogieDeclarations]: Found specification of procedure erand48 [2018-04-13 04:20:57,818 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48 [2018-04-13 04:20:57,819 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48 [2018-04-13 04:20:57,819 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48 [2018-04-13 04:20:57,819 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48 [2018-04-13 04:20:57,819 INFO L128 BoogieDeclarations]: Found specification of procedure srand48 [2018-04-13 04:20:57,819 INFO L128 BoogieDeclarations]: Found specification of procedure seed48 [2018-04-13 04:20:57,819 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48 [2018-04-13 04:20:57,819 INFO L128 BoogieDeclarations]: Found specification of procedure drand48_r [2018-04-13 04:20:57,819 INFO L128 BoogieDeclarations]: Found specification of procedure erand48_r [2018-04-13 04:20:57,819 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-04-13 04:20:57,820 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-04-13 04:20:57,820 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-04-13 04:20:57,820 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-04-13 04:20:57,820 INFO L128 BoogieDeclarations]: Found specification of procedure srand48_r [2018-04-13 04:20:57,820 INFO L128 BoogieDeclarations]: Found specification of procedure seed48_r [2018-04-13 04:20:57,820 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-04-13 04:20:57,820 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-04-13 04:20:57,820 INFO L128 BoogieDeclarations]: Found specification of procedure calloc [2018-04-13 04:20:57,820 INFO L128 BoogieDeclarations]: Found specification of procedure realloc [2018-04-13 04:20:57,820 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-04-13 04:20:57,820 INFO L128 BoogieDeclarations]: Found specification of procedure cfree [2018-04-13 04:20:57,821 INFO L128 BoogieDeclarations]: Found specification of procedure alloca [2018-04-13 04:20:57,821 INFO L128 BoogieDeclarations]: Found specification of procedure valloc [2018-04-13 04:20:57,821 INFO L128 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-04-13 04:20:57,821 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-04-13 04:20:57,821 INFO L128 BoogieDeclarations]: Found specification of procedure atexit [2018-04-13 04:20:57,821 INFO L128 BoogieDeclarations]: Found specification of procedure on_exit [2018-04-13 04:20:57,821 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-04-13 04:20:57,821 INFO L128 BoogieDeclarations]: Found specification of procedure _Exit [2018-04-13 04:20:57,821 INFO L128 BoogieDeclarations]: Found specification of procedure getenv [2018-04-13 04:20:57,822 INFO L128 BoogieDeclarations]: Found specification of procedure putenv [2018-04-13 04:20:57,822 INFO L128 BoogieDeclarations]: Found specification of procedure setenv [2018-04-13 04:20:57,822 INFO L128 BoogieDeclarations]: Found specification of procedure unsetenv [2018-04-13 04:20:57,822 INFO L128 BoogieDeclarations]: Found specification of procedure clearenv [2018-04-13 04:20:57,822 INFO L128 BoogieDeclarations]: Found specification of procedure mktemp [2018-04-13 04:20:57,822 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemp [2018-04-13 04:20:57,822 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemps [2018-04-13 04:20:57,822 INFO L128 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-04-13 04:20:57,822 INFO L128 BoogieDeclarations]: Found specification of procedure system [2018-04-13 04:20:57,822 INFO L128 BoogieDeclarations]: Found specification of procedure realpath [2018-04-13 04:20:57,822 INFO L128 BoogieDeclarations]: Found specification of procedure bsearch [2018-04-13 04:20:57,822 INFO L128 BoogieDeclarations]: Found specification of procedure qsort [2018-04-13 04:20:57,822 INFO L128 BoogieDeclarations]: Found specification of procedure abs [2018-04-13 04:20:57,822 INFO L128 BoogieDeclarations]: Found specification of procedure labs [2018-04-13 04:20:57,823 INFO L128 BoogieDeclarations]: Found specification of procedure llabs [2018-04-13 04:20:57,823 INFO L128 BoogieDeclarations]: Found specification of procedure div [2018-04-13 04:20:57,823 INFO L128 BoogieDeclarations]: Found specification of procedure ldiv [2018-04-13 04:20:57,823 INFO L128 BoogieDeclarations]: Found specification of procedure lldiv [2018-04-13 04:20:57,823 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt [2018-04-13 04:20:57,823 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt [2018-04-13 04:20:57,823 INFO L128 BoogieDeclarations]: Found specification of procedure gcvt [2018-04-13 04:20:57,823 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt [2018-04-13 04:20:57,823 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt [2018-04-13 04:20:57,823 INFO L128 BoogieDeclarations]: Found specification of procedure qgcvt [2018-04-13 04:20:57,823 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-04-13 04:20:57,823 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-04-13 04:20:57,823 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-04-13 04:20:57,823 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-04-13 04:20:57,824 INFO L128 BoogieDeclarations]: Found specification of procedure mblen [2018-04-13 04:20:57,824 INFO L128 BoogieDeclarations]: Found specification of procedure mbtowc [2018-04-13 04:20:57,824 INFO L128 BoogieDeclarations]: Found specification of procedure wctomb [2018-04-13 04:20:57,824 INFO L128 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-04-13 04:20:57,824 INFO L128 BoogieDeclarations]: Found specification of procedure wcstombs [2018-04-13 04:20:57,824 INFO L128 BoogieDeclarations]: Found specification of procedure rpmatch [2018-04-13 04:20:57,824 INFO L128 BoogieDeclarations]: Found specification of procedure getsubopt [2018-04-13 04:20:57,824 INFO L128 BoogieDeclarations]: Found specification of procedure getloadavg [2018-04-13 04:20:57,824 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-04-13 04:20:57,824 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmp [2018-04-13 04:20:57,825 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-13 04:20:57,825 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-13 04:20:57,825 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-13 04:20:57,825 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-13 04:20:57,825 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-13 04:20:57,825 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-13 04:20:57,825 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-13 04:20:57,825 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-13 04:20:58,076 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-13 04:20:58,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 04:20:58 BoogieIcfgContainer [2018-04-13 04:20:58,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-13 04:20:58,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-13 04:20:58,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-13 04:20:58,079 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-13 04:20:58,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 04:20:57" (1/3) ... [2018-04-13 04:20:58,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10477155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 04:20:58, skipping insertion in model container [2018-04-13 04:20:58,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:20:57" (2/3) ... [2018-04-13 04:20:58,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10477155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 04:20:58, skipping insertion in model container [2018-04-13 04:20:58,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 04:20:58" (3/3) ... [2018-04-13 04:20:58,080 INFO L107 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-04-13 04:20:58,085 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-13 04:20:58,092 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-04-13 04:20:58,123 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-13 04:20:58,123 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-13 04:20:58,123 INFO L370 AbstractCegarLoop]: Hoare is false [2018-04-13 04:20:58,123 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-13 04:20:58,123 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-13 04:20:58,123 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-13 04:20:58,123 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-13 04:20:58,123 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-13 04:20:58,123 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-13 04:20:58,124 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-13 04:20:58,131 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2018-04-13 04:20:58,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-13 04:20:58,136 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:20:58,137 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:20:58,137 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:20:58,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1034793114, now seen corresponding path program 1 times [2018-04-13 04:20:58,140 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:20:58,140 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:20:58,168 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:58,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:20:58,168 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:20:58,205 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:20:58,220 INFO L431 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-04-13 04:20:58,220 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-13 04:20:58,220 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-13 04:20:58,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:20:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:20:58,259 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-13 04:20:58,289 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-13 04:20:58,290 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-13 04:20:58,293 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:20:58,294 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-13 04:20:58,312 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-04-13 04:20:58,312 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-13 04:20:58,316 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-13 04:20:58,316 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2018-04-13 04:20:58,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:20:58,323 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-13 04:20:58,323 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-04-13 04:20:58,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-13 04:20:58,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-13 04:20:58,331 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-13 04:20:58,333 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 4 states. [2018-04-13 04:20:58,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:20:58,405 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2018-04-13 04:20:58,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-13 04:20:58,406 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-04-13 04:20:58,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:20:58,414 INFO L225 Difference]: With dead ends: 52 [2018-04-13 04:20:58,415 INFO L226 Difference]: Without dead ends: 49 [2018-04-13 04:20:58,416 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-13 04:20:58,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-04-13 04:20:58,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-04-13 04:20:58,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-04-13 04:20:58,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2018-04-13 04:20:58,446 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 13 [2018-04-13 04:20:58,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:20:58,446 INFO L459 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2018-04-13 04:20:58,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-13 04:20:58,446 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2018-04-13 04:20:58,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-13 04:20:58,446 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:20:58,446 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:20:58,447 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:20:58,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1034793115, now seen corresponding path program 1 times [2018-04-13 04:20:58,447 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:20:58,447 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:20:58,448 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:58,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:20:58,448 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:20:58,458 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:20:58,462 INFO L431 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-04-13 04:20:58,462 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-13 04:20:58,462 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-13 04:20:58,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:20:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:20:58,484 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-13 04:20:58,491 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-13 04:20:58,492 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-13 04:20:58,500 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-13 04:20:58,501 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:20:58,505 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:20:58,505 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:17 [2018-04-13 04:20:58,523 INFO L700 Elim1Store]: detected not equals via solver [2018-04-13 04:20:58,524 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-13 04:20:58,525 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-13 04:20:58,534 INFO L700 Elim1Store]: detected not equals via solver [2018-04-13 04:20:58,535 INFO L700 Elim1Store]: detected not equals via solver [2018-04-13 04:20:58,535 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-13 04:20:58,535 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:20:58,541 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:20:58,541 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:28, output treesize:12 [2018-04-13 04:20:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:20:58,553 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-13 04:20:58,553 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-04-13 04:20:58,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-13 04:20:58,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-13 04:20:58,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-04-13 04:20:58,554 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 6 states. [2018-04-13 04:20:58,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:20:58,687 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2018-04-13 04:20:58,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-13 04:20:58,687 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-04-13 04:20:58,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:20:58,689 INFO L225 Difference]: With dead ends: 66 [2018-04-13 04:20:58,690 INFO L226 Difference]: Without dead ends: 66 [2018-04-13 04:20:58,690 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-04-13 04:20:58,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-04-13 04:20:58,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 55. [2018-04-13 04:20:58,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-04-13 04:20:58,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2018-04-13 04:20:58,699 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 13 [2018-04-13 04:20:58,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:20:58,699 INFO L459 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2018-04-13 04:20:58,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-13 04:20:58,699 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2018-04-13 04:20:58,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-13 04:20:58,700 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:20:58,700 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:20:58,700 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:20:58,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1485166819, now seen corresponding path program 1 times [2018-04-13 04:20:58,700 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:20:58,700 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:20:58,701 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:58,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:20:58,701 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:20:58,712 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:20:58,715 INFO L431 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-04-13 04:20:58,715 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-13 04:20:58,715 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-13 04:20:58,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:20:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:20:58,737 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-13 04:20:58,744 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-13 04:20:58,744 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-13 04:20:58,751 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-13 04:20:58,752 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:20:58,756 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:20:58,757 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:17 [2018-04-13 04:20:58,788 INFO L700 Elim1Store]: detected not equals via solver [2018-04-13 04:20:58,789 INFO L700 Elim1Store]: detected not equals via solver [2018-04-13 04:20:58,790 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-13 04:20:58,790 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-13 04:20:58,799 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-13 04:20:58,800 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:20:58,809 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:20:58,809 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:28, output treesize:12 [2018-04-13 04:20:58,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:20:58,824 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-13 04:20:58,824 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-04-13 04:20:58,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-13 04:20:58,825 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-13 04:20:58,825 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-04-13 04:20:58,825 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 6 states. [2018-04-13 04:20:58,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:20:58,882 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-04-13 04:20:58,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-13 04:20:58,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-04-13 04:20:58,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:20:58,883 INFO L225 Difference]: With dead ends: 54 [2018-04-13 04:20:58,883 INFO L226 Difference]: Without dead ends: 54 [2018-04-13 04:20:58,883 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-04-13 04:20:58,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-04-13 04:20:58,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2018-04-13 04:20:58,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-04-13 04:20:58,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2018-04-13 04:20:58,885 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 13 [2018-04-13 04:20:58,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:20:58,886 INFO L459 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2018-04-13 04:20:58,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-13 04:20:58,886 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2018-04-13 04:20:58,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-04-13 04:20:58,886 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:20:58,886 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:20:58,886 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:20:58,886 INFO L82 PathProgramCache]: Analyzing trace with hash 2013815454, now seen corresponding path program 1 times [2018-04-13 04:20:58,886 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:20:58,886 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:20:58,887 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:58,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:20:58,887 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:20:58,897 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:20:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:20:58,915 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-13 04:20:58,915 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-04-13 04:20:58,915 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-13 04:20:58,915 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-13 04:20:58,916 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-13 04:20:58,916 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 4 states. [2018-04-13 04:20:58,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:20:58,948 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-04-13 04:20:58,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-13 04:20:58,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-04-13 04:20:58,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:20:58,949 INFO L225 Difference]: With dead ends: 47 [2018-04-13 04:20:58,949 INFO L226 Difference]: Without dead ends: 47 [2018-04-13 04:20:58,949 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-13 04:20:58,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-04-13 04:20:58,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-04-13 04:20:58,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-04-13 04:20:58,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2018-04-13 04:20:58,952 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 14 [2018-04-13 04:20:58,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:20:58,953 INFO L459 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2018-04-13 04:20:58,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-13 04:20:58,953 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2018-04-13 04:20:58,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-04-13 04:20:58,953 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:20:58,953 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:20:58,953 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:20:58,954 INFO L82 PathProgramCache]: Analyzing trace with hash 2013815455, now seen corresponding path program 1 times [2018-04-13 04:20:58,954 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:20:58,954 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:20:58,955 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:58,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:20:58,955 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:20:58,964 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:20:58,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:20:58,996 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-13 04:20:58,996 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-04-13 04:20:58,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-13 04:20:58,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-13 04:20:58,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-13 04:20:58,996 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 5 states. [2018-04-13 04:20:59,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:20:59,024 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2018-04-13 04:20:59,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-13 04:20:59,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-04-13 04:20:59,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:20:59,025 INFO L225 Difference]: With dead ends: 46 [2018-04-13 04:20:59,025 INFO L226 Difference]: Without dead ends: 46 [2018-04-13 04:20:59,025 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-04-13 04:20:59,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-04-13 04:20:59,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-04-13 04:20:59,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-04-13 04:20:59,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2018-04-13 04:20:59,029 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 14 [2018-04-13 04:20:59,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:20:59,029 INFO L459 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2018-04-13 04:20:59,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-13 04:20:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2018-04-13 04:20:59,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-04-13 04:20:59,030 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:20:59,030 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:20:59,030 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:20:59,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1580249804, now seen corresponding path program 1 times [2018-04-13 04:20:59,031 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:20:59,031 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:20:59,031 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:59,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:20:59,032 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:20:59,041 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:20:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:20:59,064 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-13 04:20:59,065 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-04-13 04:20:59,065 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-13 04:20:59,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-13 04:20:59,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-13 04:20:59,066 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 5 states. [2018-04-13 04:20:59,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:20:59,114 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2018-04-13 04:20:59,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-13 04:20:59,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-04-13 04:20:59,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:20:59,114 INFO L225 Difference]: With dead ends: 44 [2018-04-13 04:20:59,115 INFO L226 Difference]: Without dead ends: 44 [2018-04-13 04:20:59,115 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-04-13 04:20:59,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-04-13 04:20:59,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-04-13 04:20:59,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-04-13 04:20:59,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-04-13 04:20:59,117 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 18 [2018-04-13 04:20:59,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:20:59,117 INFO L459 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-04-13 04:20:59,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-13 04:20:59,117 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-04-13 04:20:59,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-04-13 04:20:59,117 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:20:59,117 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:20:59,117 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:20:59,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1580249803, now seen corresponding path program 1 times [2018-04-13 04:20:59,117 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:20:59,118 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:20:59,118 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:59,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:20:59,118 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:20:59,124 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:20:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:20:59,166 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-13 04:20:59,166 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-04-13 04:20:59,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-13 04:20:59,167 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-13 04:20:59,167 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-04-13 04:20:59,167 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 8 states. [2018-04-13 04:20:59,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:20:59,241 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2018-04-13 04:20:59,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-13 04:20:59,242 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-04-13 04:20:59,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:20:59,243 INFO L225 Difference]: With dead ends: 59 [2018-04-13 04:20:59,243 INFO L226 Difference]: Without dead ends: 59 [2018-04-13 04:20:59,243 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-04-13 04:20:59,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-04-13 04:20:59,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2018-04-13 04:20:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-04-13 04:20:59,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2018-04-13 04:20:59,246 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 18 [2018-04-13 04:20:59,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:20:59,246 INFO L459 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2018-04-13 04:20:59,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-13 04:20:59,246 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2018-04-13 04:20:59,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-04-13 04:20:59,246 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:20:59,247 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:20:59,247 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:20:59,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1798361525, now seen corresponding path program 1 times [2018-04-13 04:20:59,247 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:20:59,247 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:20:59,247 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:59,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:20:59,248 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:20:59,255 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:20:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:20:59,277 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-13 04:20:59,277 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-04-13 04:20:59,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-13 04:20:59,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-13 04:20:59,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-04-13 04:20:59,278 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand 6 states. [2018-04-13 04:20:59,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:20:59,336 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2018-04-13 04:20:59,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-13 04:20:59,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-04-13 04:20:59,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:20:59,337 INFO L225 Difference]: With dead ends: 49 [2018-04-13 04:20:59,337 INFO L226 Difference]: Without dead ends: 49 [2018-04-13 04:20:59,337 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-04-13 04:20:59,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-04-13 04:20:59,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-04-13 04:20:59,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-04-13 04:20:59,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2018-04-13 04:20:59,339 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 20 [2018-04-13 04:20:59,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:20:59,340 INFO L459 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2018-04-13 04:20:59,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-13 04:20:59,340 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2018-04-13 04:20:59,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-04-13 04:20:59,340 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:20:59,340 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:20:59,341 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:20:59,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1798361526, now seen corresponding path program 1 times [2018-04-13 04:20:59,341 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:20:59,341 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:20:59,342 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:59,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:20:59,342 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:20:59,349 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:20:59,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:20:59,418 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-13 04:20:59,418 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-04-13 04:20:59,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-13 04:20:59,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-13 04:20:59,418 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-04-13 04:20:59,419 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 9 states. [2018-04-13 04:20:59,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:20:59,513 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-04-13 04:20:59,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-13 04:20:59,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-04-13 04:20:59,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:20:59,514 INFO L225 Difference]: With dead ends: 49 [2018-04-13 04:20:59,514 INFO L226 Difference]: Without dead ends: 49 [2018-04-13 04:20:59,515 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-04-13 04:20:59,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-04-13 04:20:59,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-04-13 04:20:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-04-13 04:20:59,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2018-04-13 04:20:59,517 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 20 [2018-04-13 04:20:59,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:20:59,518 INFO L459 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2018-04-13 04:20:59,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-13 04:20:59,518 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2018-04-13 04:20:59,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-04-13 04:20:59,518 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:20:59,518 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:20:59,519 INFO L408 AbstractCegarLoop]: === Iteration 10 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:20:59,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1648573174, now seen corresponding path program 1 times [2018-04-13 04:20:59,519 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:20:59,519 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:20:59,520 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:59,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:20:59,520 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:20:59,527 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:20:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:20:59,553 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-13 04:20:59,553 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-04-13 04:20:59,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-13 04:20:59,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-13 04:20:59,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-04-13 04:20:59,554 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2018-04-13 04:20:59,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:20:59,598 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2018-04-13 04:20:59,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-13 04:20:59,598 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-04-13 04:20:59,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:20:59,598 INFO L225 Difference]: With dead ends: 48 [2018-04-13 04:20:59,598 INFO L226 Difference]: Without dead ends: 48 [2018-04-13 04:20:59,599 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-04-13 04:20:59,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-04-13 04:20:59,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-04-13 04:20:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-04-13 04:20:59,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2018-04-13 04:20:59,600 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 22 [2018-04-13 04:20:59,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:20:59,600 INFO L459 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2018-04-13 04:20:59,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-13 04:20:59,601 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2018-04-13 04:20:59,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-04-13 04:20:59,601 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:20:59,601 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:20:59,601 INFO L408 AbstractCegarLoop]: === Iteration 11 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:20:59,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1648573175, now seen corresponding path program 1 times [2018-04-13 04:20:59,601 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:20:59,601 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:20:59,602 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:59,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:20:59,602 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:20:59,606 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:20:59,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:20:59,665 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-13 04:20:59,665 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-04-13 04:20:59,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-13 04:20:59,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-13 04:20:59,665 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-04-13 04:20:59,665 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 8 states. [2018-04-13 04:20:59,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:20:59,713 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2018-04-13 04:20:59,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-13 04:20:59,714 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-04-13 04:20:59,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:20:59,714 INFO L225 Difference]: With dead ends: 57 [2018-04-13 04:20:59,714 INFO L226 Difference]: Without dead ends: 57 [2018-04-13 04:20:59,714 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-04-13 04:20:59,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-04-13 04:20:59,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2018-04-13 04:20:59,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-04-13 04:20:59,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2018-04-13 04:20:59,716 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 22 [2018-04-13 04:20:59,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:20:59,717 INFO L459 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2018-04-13 04:20:59,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-13 04:20:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2018-04-13 04:20:59,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-13 04:20:59,717 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:20:59,717 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:20:59,717 INFO L408 AbstractCegarLoop]: === Iteration 12 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:20:59,717 INFO L82 PathProgramCache]: Analyzing trace with hash -564160893, now seen corresponding path program 1 times [2018-04-13 04:20:59,717 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:20:59,717 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:20:59,718 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:59,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:20:59,718 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:20:59,722 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:20:59,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:20:59,767 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-13 04:20:59,767 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-04-13 04:20:59,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-13 04:20:59,768 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-13 04:20:59,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-04-13 04:20:59,768 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2018-04-13 04:20:59,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:20:59,814 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2018-04-13 04:20:59,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-13 04:20:59,814 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-04-13 04:20:59,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:20:59,814 INFO L225 Difference]: With dead ends: 48 [2018-04-13 04:20:59,814 INFO L226 Difference]: Without dead ends: 48 [2018-04-13 04:20:59,815 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-04-13 04:20:59,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-04-13 04:20:59,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-04-13 04:20:59,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-04-13 04:20:59,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2018-04-13 04:20:59,816 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 24 [2018-04-13 04:20:59,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:20:59,817 INFO L459 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2018-04-13 04:20:59,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-13 04:20:59,817 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2018-04-13 04:20:59,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-13 04:20:59,817 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:20:59,817 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:20:59,817 INFO L408 AbstractCegarLoop]: === Iteration 13 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:20:59,817 INFO L82 PathProgramCache]: Analyzing trace with hash -564160892, now seen corresponding path program 1 times [2018-04-13 04:20:59,817 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:20:59,818 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:20:59,818 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:59,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:20:59,818 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:20:59,824 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:20:59,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:20:59,872 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-13 04:20:59,872 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-04-13 04:20:59,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-13 04:20:59,873 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-13 04:20:59,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-04-13 04:20:59,873 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 9 states. [2018-04-13 04:20:59,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:20:59,966 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2018-04-13 04:20:59,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-13 04:20:59,967 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-04-13 04:20:59,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:20:59,967 INFO L225 Difference]: With dead ends: 57 [2018-04-13 04:20:59,967 INFO L226 Difference]: Without dead ends: 57 [2018-04-13 04:20:59,968 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2018-04-13 04:20:59,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-04-13 04:20:59,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2018-04-13 04:20:59,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-04-13 04:20:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2018-04-13 04:20:59,970 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 24 [2018-04-13 04:20:59,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:20:59,971 INFO L459 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2018-04-13 04:20:59,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-13 04:20:59,971 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2018-04-13 04:20:59,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-04-13 04:20:59,971 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:20:59,971 INFO L355 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:20:59,971 INFO L408 AbstractCegarLoop]: === Iteration 14 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:20:59,972 INFO L82 PathProgramCache]: Analyzing trace with hash -307576952, now seen corresponding path program 1 times [2018-04-13 04:20:59,972 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:20:59,972 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:20:59,972 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:59,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:20:59,973 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:20:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:20:59,982 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:20:59,985 INFO L431 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-04-13 04:20:59,985 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-13 04:20:59,985 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-13 04:20:59,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:21:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:21:00,013 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-13 04:21:00,050 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-04-13 04:21:00,052 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-04-13 04:21:00,052 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:00,054 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:00,061 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-13 04:21:00,062 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:25 [2018-04-13 04:21:00,242 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2018-04-13 04:21:00,246 INFO L682 Elim1Store]: detected equality via solver [2018-04-13 04:21:00,247 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2018-04-13 04:21:00,247 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:00,263 INFO L682 Elim1Store]: detected equality via solver [2018-04-13 04:21:00,264 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2018-04-13 04:21:00,264 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:00,275 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:00,288 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:00,288 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 8 variables, input treesize:58, output treesize:3 [2018-04-13 04:21:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:21:00,303 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-13 04:21:00,303 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-04-13 04:21:00,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-13 04:21:00,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-13 04:21:00,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2018-04-13 04:21:00,304 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 15 states. [2018-04-13 04:21:00,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:21:00,627 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2018-04-13 04:21:00,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-13 04:21:00,628 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2018-04-13 04:21:00,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:21:00,628 INFO L225 Difference]: With dead ends: 78 [2018-04-13 04:21:00,628 INFO L226 Difference]: Without dead ends: 78 [2018-04-13 04:21:00,629 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2018-04-13 04:21:00,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-04-13 04:21:00,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 71. [2018-04-13 04:21:00,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-04-13 04:21:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2018-04-13 04:21:00,631 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 25 [2018-04-13 04:21:00,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:21:00,631 INFO L459 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2018-04-13 04:21:00,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-13 04:21:00,631 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2018-04-13 04:21:00,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-04-13 04:21:00,632 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:21:00,632 INFO L355 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:21:00,632 INFO L408 AbstractCegarLoop]: === Iteration 15 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:21:00,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1993245638, now seen corresponding path program 1 times [2018-04-13 04:21:00,632 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:21:00,632 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:21:00,632 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:00,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:21:00,633 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:21:00,640 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:21:00,643 INFO L431 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-04-13 04:21:00,643 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-13 04:21:00,643 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-13 04:21:00,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:21:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:21:00,667 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-13 04:21:00,678 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-13 04:21:00,678 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:00,681 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:00,681 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-04-13 04:21:00,692 INFO L700 Elim1Store]: detected not equals via solver [2018-04-13 04:21:00,693 INFO L700 Elim1Store]: detected not equals via solver [2018-04-13 04:21:00,693 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-13 04:21:00,693 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:00,695 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:00,695 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2018-04-13 04:21:00,706 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-04-13 04:21:00,708 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-04-13 04:21:00,708 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:00,709 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:00,713 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-13 04:21:00,713 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:26 [2018-04-13 04:21:00,725 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 26 [2018-04-13 04:21:00,728 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-04-13 04:21:00,728 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:00,731 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:00,738 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-04-13 04:21:00,738 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:40, output treesize:36 [2018-04-13 04:21:00,834 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2018-04-13 04:21:00,837 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2018-04-13 04:21:00,837 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:00,841 INFO L682 Elim1Store]: detected equality via solver [2018-04-13 04:21:00,842 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2018-04-13 04:21:00,842 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:00,845 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:00,850 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:00,850 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 8 variables, input treesize:49, output treesize:3 [2018-04-13 04:21:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:21:00,863 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-13 04:21:00,863 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-04-13 04:21:00,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-04-13 04:21:00,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-04-13 04:21:00,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-04-13 04:21:00,864 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand 14 states. [2018-04-13 04:21:01,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:21:01,160 INFO L93 Difference]: Finished difference Result 125 states and 132 transitions. [2018-04-13 04:21:01,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-04-13 04:21:01,160 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2018-04-13 04:21:01,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:21:01,160 INFO L225 Difference]: With dead ends: 125 [2018-04-13 04:21:01,161 INFO L226 Difference]: Without dead ends: 125 [2018-04-13 04:21:01,161 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2018-04-13 04:21:01,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-04-13 04:21:01,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 72. [2018-04-13 04:21:01,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-04-13 04:21:01,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2018-04-13 04:21:01,163 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 25 [2018-04-13 04:21:01,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:21:01,164 INFO L459 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2018-04-13 04:21:01,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-04-13 04:21:01,164 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2018-04-13 04:21:01,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-04-13 04:21:01,164 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:21:01,164 INFO L355 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:21:01,164 INFO L408 AbstractCegarLoop]: === Iteration 16 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:21:01,164 INFO L82 PathProgramCache]: Analyzing trace with hash 304301896, now seen corresponding path program 1 times [2018-04-13 04:21:01,164 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:21:01,164 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:21:01,165 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:01,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:21:01,165 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:21:01,173 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:21:01,177 INFO L431 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-04-13 04:21:01,178 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-13 04:21:01,178 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-13 04:21:01,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:21:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:21:01,201 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-13 04:21:01,208 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-13 04:21:01,209 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:01,214 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-13 04:21:01,214 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:01,219 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:01,219 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-04-13 04:21:01,235 INFO L700 Elim1Store]: detected not equals via solver [2018-04-13 04:21:01,236 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-13 04:21:01,237 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:01,248 INFO L700 Elim1Store]: detected not equals via solver [2018-04-13 04:21:01,249 INFO L700 Elim1Store]: detected not equals via solver [2018-04-13 04:21:01,249 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-13 04:21:01,249 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:01,255 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:01,255 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-04-13 04:21:01,277 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-04-13 04:21:01,279 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-04-13 04:21:01,279 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:01,280 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:01,285 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:01,285 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:36, output treesize:32 [2018-04-13 04:21:01,299 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 30 [2018-04-13 04:21:01,310 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-04-13 04:21:01,310 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:01,314 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:01,322 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-13 04:21:01,322 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:43, output treesize:39 [2018-04-13 04:21:01,490 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2018-04-13 04:21:01,499 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2018-04-13 04:21:01,499 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-13 04:21:01,506 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2018-04-13 04:21:01,506 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:01,509 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-13 04:21:01,522 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-13 04:21:01,522 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:59, output treesize:54 [2018-04-13 04:21:01,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:21:01,581 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-04-13 04:21:01,581 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-04-13 04:21:01,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-13 04:21:01,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-13 04:21:01,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2018-04-13 04:21:01,582 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand 15 states. [2018-04-13 04:21:02,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:21:02,507 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2018-04-13 04:21:02,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-04-13 04:21:02,507 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2018-04-13 04:21:02,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:21:02,508 INFO L225 Difference]: With dead ends: 91 [2018-04-13 04:21:02,508 INFO L226 Difference]: Without dead ends: 91 [2018-04-13 04:21:02,508 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2018-04-13 04:21:02,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-04-13 04:21:02,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 79. [2018-04-13 04:21:02,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-04-13 04:21:02,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2018-04-13 04:21:02,510 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 25 [2018-04-13 04:21:02,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:21:02,510 INFO L459 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2018-04-13 04:21:02,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-13 04:21:02,511 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2018-04-13 04:21:02,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-04-13 04:21:02,511 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:21:02,511 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:21:02,511 INFO L408 AbstractCegarLoop]: === Iteration 17 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:21:02,511 INFO L82 PathProgramCache]: Analyzing trace with hash 376345353, now seen corresponding path program 1 times [2018-04-13 04:21:02,511 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:21:02,511 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:21:02,512 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:02,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:21:02,512 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:21:02,520 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:21:02,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:21:02,727 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-13 04:21:02,727 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-13 04:21:02,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:21:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:21:02,749 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-13 04:21:02,779 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-13 04:21:02,779 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:02,782 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:02,782 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-04-13 04:21:02,820 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-04-13 04:21:02,822 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-04-13 04:21:02,822 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:02,824 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:02,829 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:02,829 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:30, output treesize:26 [2018-04-13 04:21:03,114 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2018-04-13 04:21:03,117 INFO L682 Elim1Store]: detected equality via solver [2018-04-13 04:21:03,117 INFO L682 Elim1Store]: detected equality via solver [2018-04-13 04:21:03,125 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 27 [2018-04-13 04:21:03,126 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-13 04:21:03,142 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-13 04:21:03,154 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-13 04:21:03,155 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:63, output treesize:33 [2018-04-13 04:21:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:21:03,242 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-13 04:21:03,242 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 28 [2018-04-13 04:21:03,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-04-13 04:21:03,242 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-04-13 04:21:03,242 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=739, Unknown=0, NotChecked=0, Total=812 [2018-04-13 04:21:03,242 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 29 states. [2018-04-13 04:21:03,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:21:03,992 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2018-04-13 04:21:03,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-04-13 04:21:03,992 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 27 [2018-04-13 04:21:03,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:21:03,993 INFO L225 Difference]: With dead ends: 79 [2018-04-13 04:21:03,993 INFO L226 Difference]: Without dead ends: 79 [2018-04-13 04:21:03,993 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=213, Invalid=1767, Unknown=0, NotChecked=0, Total=1980 [2018-04-13 04:21:03,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-04-13 04:21:03,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-04-13 04:21:03,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-04-13 04:21:03,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2018-04-13 04:21:03,996 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 27 [2018-04-13 04:21:03,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:21:03,996 INFO L459 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2018-04-13 04:21:03,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-04-13 04:21:03,996 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2018-04-13 04:21:03,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-04-13 04:21:03,997 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:21:03,997 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:21:03,997 INFO L408 AbstractCegarLoop]: === Iteration 18 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:21:03,997 INFO L82 PathProgramCache]: Analyzing trace with hash 890631050, now seen corresponding path program 1 times [2018-04-13 04:21:03,997 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:21:03,997 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:21:03,997 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:03,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:21:03,997 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:21:04,004 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:21:04,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:21:04,056 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-13 04:21:04,057 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-13 04:21:04,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:21:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:21:04,076 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-13 04:21:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:21:04,099 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-13 04:21:04,099 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 10 [2018-04-13 04:21:04,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-04-13 04:21:04,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-04-13 04:21:04,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-04-13 04:21:04,100 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 11 states. [2018-04-13 04:21:04,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:21:04,201 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2018-04-13 04:21:04,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-13 04:21:04,201 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-04-13 04:21:04,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:21:04,202 INFO L225 Difference]: With dead ends: 84 [2018-04-13 04:21:04,202 INFO L226 Difference]: Without dead ends: 84 [2018-04-13 04:21:04,202 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2018-04-13 04:21:04,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-04-13 04:21:04,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 75. [2018-04-13 04:21:04,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-04-13 04:21:04,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2018-04-13 04:21:04,205 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 29 [2018-04-13 04:21:04,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:21:04,205 INFO L459 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2018-04-13 04:21:04,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-04-13 04:21:04,206 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2018-04-13 04:21:04,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-04-13 04:21:04,206 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:21:04,206 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:21:04,206 INFO L408 AbstractCegarLoop]: === Iteration 19 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:21:04,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1581359984, now seen corresponding path program 1 times [2018-04-13 04:21:04,207 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:21:04,207 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:21:04,207 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:04,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:21:04,207 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:21:04,213 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:21:04,215 INFO L431 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-04-13 04:21:04,215 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-13 04:21:04,215 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-13 04:21:04,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:21:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:21:04,229 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-13 04:21:04,265 INFO L700 Elim1Store]: detected not equals via solver [2018-04-13 04:21:04,265 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2018-04-13 04:21:04,268 INFO L700 Elim1Store]: detected not equals via solver [2018-04-13 04:21:04,268 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-04-13 04:21:04,269 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:04,275 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:04,280 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-13 04:21:04,280 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-04-13 04:21:04,300 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc12.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc12.base| 1))) (and (= (select .cse0 |c_main_#t~malloc13.base|) 0) (= |c_#valid| (store (store .cse0 |c_main_#t~malloc13.base| 1) |main_#t~malloc12.base| 0)) (= 0 (select |c_old(#valid)| |main_#t~malloc12.base|))))) is different from true [2018-04-13 04:21:04,303 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc13.base| Int) (|main_#t~malloc12.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc12.base| 1))) (and (= (select .cse0 |main_#t~malloc13.base|) 0) (= |c_#valid| (store (store (store .cse0 |main_#t~malloc13.base| 1) |main_#t~malloc12.base| 0) |main_#t~malloc13.base| 0)) (= 0 (select |c_old(#valid)| |main_#t~malloc12.base|))))) is different from true [2018-04-13 04:21:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:21:04,305 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-13 04:21:04,306 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-04-13 04:21:04,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-13 04:21:04,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-13 04:21:04,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=22, Unknown=2, NotChecked=18, Total=56 [2018-04-13 04:21:04,306 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand 8 states. [2018-04-13 04:21:04,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:21:04,354 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2018-04-13 04:21:04,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-13 04:21:04,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-04-13 04:21:04,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:21:04,354 INFO L225 Difference]: With dead ends: 74 [2018-04-13 04:21:04,354 INFO L226 Difference]: Without dead ends: 40 [2018-04-13 04:21:04,355 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=30, Unknown=2, NotChecked=22, Total=72 [2018-04-13 04:21:04,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-04-13 04:21:04,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-04-13 04:21:04,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-04-13 04:21:04,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-04-13 04:21:04,356 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 31 [2018-04-13 04:21:04,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:21:04,356 INFO L459 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-04-13 04:21:04,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-13 04:21:04,356 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-04-13 04:21:04,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-04-13 04:21:04,357 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:21:04,357 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:21:04,357 INFO L408 AbstractCegarLoop]: === Iteration 20 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:21:04,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1197897303, now seen corresponding path program 1 times [2018-04-13 04:21:04,357 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:21:04,357 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:21:04,357 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:04,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:21:04,357 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:21:04,364 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:21:04,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:21:04,438 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-13 04:21:04,438 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-13 04:21:04,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:21:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:21:04,458 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-13 04:21:04,478 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-13 04:21:04,478 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:04,482 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:04,483 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2018-04-13 04:21:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:21:04,584 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-13 04:21:04,584 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2018-04-13 04:21:04,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-04-13 04:21:04,585 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-04-13 04:21:04,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2018-04-13 04:21:04,585 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 22 states. [2018-04-13 04:21:04,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:21:04,938 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-04-13 04:21:04,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-13 04:21:04,938 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 31 [2018-04-13 04:21:04,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:21:04,938 INFO L225 Difference]: With dead ends: 49 [2018-04-13 04:21:04,938 INFO L226 Difference]: Without dead ends: 43 [2018-04-13 04:21:04,939 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=1092, Unknown=0, NotChecked=0, Total=1260 [2018-04-13 04:21:04,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-04-13 04:21:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2018-04-13 04:21:04,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-04-13 04:21:04,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-04-13 04:21:04,940 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 31 [2018-04-13 04:21:04,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:21:04,941 INFO L459 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-04-13 04:21:04,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-04-13 04:21:04,941 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-04-13 04:21:04,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-04-13 04:21:04,941 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:21:04,941 INFO L355 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:21:04,941 INFO L408 AbstractCegarLoop]: === Iteration 21 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:21:04,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1518347755, now seen corresponding path program 2 times [2018-04-13 04:21:04,942 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:21:04,942 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:21:04,942 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:04,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-13 04:21:04,942 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:21:04,951 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:21:04,955 INFO L431 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-04-13 04:21:04,955 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-13 04:21:04,955 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-13 04:21:04,956 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-13 04:21:04,982 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-13 04:21:04,982 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-13 04:21:04,986 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-13 04:21:05,006 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-13 04:21:05,006 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:05,013 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-13 04:21:05,013 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:05,019 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:05,019 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:17 [2018-04-13 04:21:05,040 INFO L700 Elim1Store]: detected not equals via solver [2018-04-13 04:21:05,042 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-13 04:21:05,043 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:05,054 INFO L700 Elim1Store]: detected not equals via solver [2018-04-13 04:21:05,055 INFO L700 Elim1Store]: detected not equals via solver [2018-04-13 04:21:05,055 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-13 04:21:05,056 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:05,064 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:05,065 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2018-04-13 04:21:05,088 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-04-13 04:21:05,090 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-04-13 04:21:05,090 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:05,092 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:05,098 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:05,098 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:34, output treesize:30 [2018-04-13 04:21:05,116 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 30 [2018-04-13 04:21:05,118 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-04-13 04:21:05,118 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:05,123 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:05,131 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-13 04:21:05,131 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:37 [2018-04-13 04:21:05,397 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2018-04-13 04:21:05,402 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 17 [2018-04-13 04:21:05,402 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-13 04:21:05,413 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 3 [2018-04-13 04:21:05,413 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:05,418 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2018-04-13 04:21:05,419 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-04-13 04:21:05,425 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-13 04:21:05,443 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-13 04:21:05,443 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:64, output treesize:38 [2018-04-13 04:21:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:21:05,494 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-04-13 04:21:05,494 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-04-13 04:21:05,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-04-13 04:21:05,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-04-13 04:21:05,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2018-04-13 04:21:05,494 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 19 states. [2018-04-13 04:21:06,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:21:06,151 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-04-13 04:21:06,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-04-13 04:21:06,151 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 32 [2018-04-13 04:21:06,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:21:06,152 INFO L225 Difference]: With dead ends: 45 [2018-04-13 04:21:06,152 INFO L226 Difference]: Without dead ends: 45 [2018-04-13 04:21:06,152 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=144, Invalid=978, Unknown=0, NotChecked=0, Total=1122 [2018-04-13 04:21:06,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-04-13 04:21:06,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2018-04-13 04:21:06,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-04-13 04:21:06,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-04-13 04:21:06,153 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 32 [2018-04-13 04:21:06,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:21:06,154 INFO L459 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-04-13 04:21:06,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-04-13 04:21:06,154 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-04-13 04:21:06,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-04-13 04:21:06,154 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:21:06,154 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:21:06,154 INFO L408 AbstractCegarLoop]: === Iteration 22 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:21:06,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1156687510, now seen corresponding path program 2 times [2018-04-13 04:21:06,155 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:21:06,155 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:21:06,155 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:06,155 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-13 04:21:06,155 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:21:06,163 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:21:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:21:06,405 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-13 04:21:06,405 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-13 04:21:06,406 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-13 04:21:06,433 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-13 04:21:06,433 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-13 04:21:06,437 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-13 04:21:06,499 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-13 04:21:06,499 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:06,504 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:06,504 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2018-04-13 04:21:06,543 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-04-13 04:21:06,544 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-04-13 04:21:06,544 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:06,545 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:06,550 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:06,550 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:38, output treesize:26 [2018-04-13 04:21:06,861 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32 [2018-04-13 04:21:06,863 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2018-04-13 04:21:06,863 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:06,875 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 19 [2018-04-13 04:21:06,875 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-04-13 04:21:06,891 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 12 [2018-04-13 04:21:06,891 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-04-13 04:21:06,896 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-13 04:21:06,901 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-13 04:21:06,902 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:43, output treesize:36 [2018-04-13 04:21:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-13 04:21:07,034 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-13 04:21:07,034 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20] total 34 [2018-04-13 04:21:07,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-04-13 04:21:07,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-04-13 04:21:07,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2018-04-13 04:21:07,035 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 35 states. [2018-04-13 04:21:07,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:21:07,796 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-04-13 04:21:07,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-04-13 04:21:07,796 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 34 [2018-04-13 04:21:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:21:07,797 INFO L225 Difference]: With dead ends: 44 [2018-04-13 04:21:07,797 INFO L226 Difference]: Without dead ends: 44 [2018-04-13 04:21:07,797 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=237, Invalid=2313, Unknown=0, NotChecked=0, Total=2550 [2018-04-13 04:21:07,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-04-13 04:21:07,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-04-13 04:21:07,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-04-13 04:21:07,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-04-13 04:21:07,799 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 34 [2018-04-13 04:21:07,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:21:07,799 INFO L459 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-04-13 04:21:07,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-04-13 04:21:07,799 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-04-13 04:21:07,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-04-13 04:21:07,800 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:21:07,800 INFO L355 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:21:07,800 INFO L408 AbstractCegarLoop]: === Iteration 23 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:21:07,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1837889192, now seen corresponding path program 3 times [2018-04-13 04:21:07,800 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:21:07,800 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:21:07,800 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:07,801 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-13 04:21:07,801 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:21:07,807 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:21:07,813 INFO L431 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-04-13 04:21:07,813 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-13 04:21:07,813 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-13 04:21:07,814 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-13 04:21:07,845 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-04-13 04:21:07,845 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-13 04:21:07,849 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-13 04:21:07,855 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-13 04:21:07,856 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:07,860 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-13 04:21:07,860 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:07,863 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:07,863 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-04-13 04:21:07,874 INFO L700 Elim1Store]: detected not equals via solver [2018-04-13 04:21:07,876 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-13 04:21:07,876 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:07,886 INFO L700 Elim1Store]: detected not equals via solver [2018-04-13 04:21:07,887 INFO L700 Elim1Store]: detected not equals via solver [2018-04-13 04:21:07,887 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-13 04:21:07,888 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:07,892 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:07,892 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2018-04-13 04:21:07,910 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-04-13 04:21:07,911 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-04-13 04:21:07,911 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:07,912 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:07,937 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:07,937 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2018-04-13 04:21:07,956 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 29 [2018-04-13 04:21:07,959 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-04-13 04:21:07,959 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:07,964 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:07,970 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-13 04:21:07,970 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:31 [2018-04-13 04:21:08,189 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2018-04-13 04:21:08,191 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2018-04-13 04:21:08,191 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:08,202 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 14 [2018-04-13 04:21:08,202 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-04-13 04:21:08,204 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-13 04:21:08,211 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-13 04:21:08,212 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:56, output treesize:32 [2018-04-13 04:21:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-04-13 04:21:08,253 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-04-13 04:21:08,253 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-04-13 04:21:08,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-04-13 04:21:08,253 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-04-13 04:21:08,254 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2018-04-13 04:21:08,254 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 17 states. [2018-04-13 04:21:08,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:21:08,810 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-04-13 04:21:08,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-04-13 04:21:08,810 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 39 [2018-04-13 04:21:08,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:21:08,811 INFO L225 Difference]: With dead ends: 42 [2018-04-13 04:21:08,811 INFO L226 Difference]: Without dead ends: 42 [2018-04-13 04:21:08,811 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2018-04-13 04:21:08,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-04-13 04:21:08,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-04-13 04:21:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-04-13 04:21:08,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-04-13 04:21:08,813 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 39 [2018-04-13 04:21:08,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:21:08,813 INFO L459 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-04-13 04:21:08,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-04-13 04:21:08,814 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-04-13 04:21:08,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-04-13 04:21:08,814 INFO L347 BasicCegarLoop]: Found error trace [2018-04-13 04:21:08,814 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-13 04:21:08,814 INFO L408 AbstractCegarLoop]: === Iteration 24 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr7RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr5RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr6RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr8RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcmp_alloca_true_valid_memsafety_true_termination_i__cstrcmpErr9RequiresViolation]=== [2018-04-13 04:21:08,814 INFO L82 PathProgramCache]: Analyzing trace with hash 979954281, now seen corresponding path program 3 times [2018-04-13 04:21:08,815 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-13 04:21:08,815 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-13 04:21:08,815 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:08,815 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-13 04:21:08,816 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-13 04:21:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-13 04:21:08,840 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-13 04:21:08,970 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-04-13 04:21:08,970 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-13 04:21:08,970 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-13 04:21:08,971 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-13 04:21:09,012 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-04-13 04:21:09,012 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-13 04:21:09,017 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-13 04:21:09,021 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-13 04:21:09,021 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:09,024 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:09,024 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-13 04:21:09,044 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-04-13 04:21:09,048 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-04-13 04:21:09,048 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:09,049 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:09,051 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-13 04:21:09,051 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-04-13 04:21:09,163 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32 [2018-04-13 04:21:09,166 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2018-04-13 04:21:09,166 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-13 04:21:09,184 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 19 [2018-04-13 04:21:09,185 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-04-13 04:21:09,211 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 27 [2018-04-13 04:21:09,212 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-04-13 04:21:09,221 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-04-13 04:21:09,231 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-13 04:21:09,231 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:40, output treesize:32 [2018-04-13 04:21:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-04-13 04:21:09,265 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-13 04:21:09,265 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2018-04-13 04:21:09,265 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-04-13 04:21:09,265 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-04-13 04:21:09,265 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2018-04-13 04:21:09,265 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 19 states. [2018-04-13 04:21:09,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-13 04:21:09,519 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-04-13 04:21:09,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-04-13 04:21:09,519 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 41 [2018-04-13 04:21:09,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-13 04:21:09,519 INFO L225 Difference]: With dead ends: 41 [2018-04-13 04:21:09,519 INFO L226 Difference]: Without dead ends: 0 [2018-04-13 04:21:09,519 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2018-04-13 04:21:09,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-04-13 04:21:09,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-04-13 04:21:09,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-04-13 04:21:09,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-04-13 04:21:09,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2018-04-13 04:21:09,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-13 04:21:09,520 INFO L459 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-04-13 04:21:09,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-04-13 04:21:09,520 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-04-13 04:21:09,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-04-13 04:21:09,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 04:21:09 BoogieIcfgContainer [2018-04-13 04:21:09,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-13 04:21:09,524 INFO L168 Benchmark]: Toolchain (without parser) took 12061.88 ms. Allocated memory was 404.8 MB in the beginning and 761.3 MB in the end (delta: 356.5 MB). Free memory was 341.8 MB in the beginning and 545.8 MB in the end (delta: -204.0 MB). Peak memory consumption was 152.5 MB. Max. memory is 5.3 GB. [2018-04-13 04:21:09,525 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 404.8 MB. Free memory is still 367.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-13 04:21:09,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.69 ms. Allocated memory is still 404.8 MB. Free memory was 341.8 MB in the beginning and 316.6 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 5.3 GB. [2018-04-13 04:21:09,526 INFO L168 Benchmark]: Boogie Preprocessor took 34.48 ms. Allocated memory is still 404.8 MB. Free memory was 316.6 MB in the beginning and 315.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-04-13 04:21:09,526 INFO L168 Benchmark]: RCFGBuilder took 351.69 ms. Allocated memory was 404.8 MB in the beginning and 593.5 MB in the end (delta: 188.7 MB). Free memory was 315.3 MB in the beginning and 530.0 MB in the end (delta: -214.7 MB). Peak memory consumption was 24.0 MB. Max. memory is 5.3 GB. [2018-04-13 04:21:09,526 INFO L168 Benchmark]: TraceAbstraction took 11446.56 ms. Allocated memory was 593.5 MB in the beginning and 761.3 MB in the end (delta: 167.8 MB). Free memory was 530.0 MB in the beginning and 545.8 MB in the end (delta: -15.7 MB). Peak memory consumption was 152.0 MB. Max. memory is 5.3 GB. [2018-04-13 04:21:09,527 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 404.8 MB. Free memory is still 367.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 226.69 ms. Allocated memory is still 404.8 MB. Free memory was 341.8 MB in the beginning and 316.6 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.48 ms. Allocated memory is still 404.8 MB. Free memory was 316.6 MB in the beginning and 315.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 351.69 ms. Allocated memory was 404.8 MB in the beginning and 593.5 MB in the end (delta: 188.7 MB). Free memory was 315.3 MB in the beginning and 530.0 MB in the end (delta: -214.7 MB). Peak memory consumption was 24.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 11446.56 ms. Allocated memory was 593.5 MB in the beginning and 761.3 MB in the end (delta: 167.8 MB). Free memory was 530.0 MB in the beginning and 545.8 MB in the end (delta: -15.7 MB). Peak memory consumption was 152.0 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 560]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 559]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 560]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 548]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 559]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 15 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 59 locations, 15 error locations. SAFE Result, 11.4s OverallTime, 24 OverallIterations, 4 TraceHistogramMax, 5.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 735 SDtfs, 1250 SDslu, 3309 SDs, 0 SdLazy, 3803 SolverSat, 245 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 647 GetRequests, 245 SyntacticMatches, 6 SemanticMatches, 396 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1852 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 24 MinimizatonAttempts, 134 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 952 NumberOfCodeBlocks, 952 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 707 ConstructedInterpolants, 83 QuantifiedInterpolants, 231443 SizeOfPredicates, 145 NumberOfNonLiveVariables, 1945 ConjunctsInSsa, 492 ConjunctsInUnsatCore, 29 InterpolantComputations, 16 PerfectInterpolantSequences, 44/170 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-13_04-21-09-534.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-13_04-21-09-534.csv Received shutdown request...