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_cstrcspn-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-666feb3-m [2018-04-11 15:19:07,320 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-11 15:19:07,321 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-11 15:19:07,334 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-11 15:19:07,334 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-11 15:19:07,335 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-11 15:19:07,336 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-11 15:19:07,338 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-11 15:19:07,339 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-11 15:19:07,340 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-11 15:19:07,341 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-11 15:19:07,341 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-11 15:19:07,342 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-11 15:19:07,342 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-11 15:19:07,343 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-11 15:19:07,345 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-11 15:19:07,346 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-11 15:19:07,347 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-11 15:19:07,348 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-11 15:19:07,349 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-11 15:19:07,351 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-11 15:19:07,351 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-11 15:19:07,351 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-11 15:19:07,352 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-11 15:19:07,353 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-11 15:19:07,353 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-11 15:19:07,354 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-11 15:19:07,354 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-11 15:19:07,355 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-11 15:19:07,355 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-11 15:19:07,355 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-11 15:19:07,356 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 [2018-04-11 15:19:07,377 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-11 15:19:07,377 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-11 15:19:07,378 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-04-11 15:19:07,378 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-04-11 15:19:07,378 INFO L133 SettingsManager]: * Use SBE=true [2018-04-11 15:19:07,378 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-11 15:19:07,379 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-11 15:19:07,379 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-11 15:19:07,379 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-11 15:19:07,379 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-11 15:19:07,379 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-11 15:19:07,379 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-11 15:19:07,379 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-04-11 15:19:07,380 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-11 15:19:07,380 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-11 15:19:07,380 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-11 15:19:07,380 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-04-11 15:19:07,380 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-04-11 15:19:07,380 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-11 15:19:07,381 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-11 15:19:07,381 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-11 15:19:07,381 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-11 15:19:07,381 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-11 15:19:07,381 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Bitprecise bitfields -> false [2018-04-11 15:19:07,409 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-11 15:19:07,419 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-11 15:19:07,423 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-11 15:19:07,424 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-11 15:19:07,424 INFO L276 PluginConnector]: CDTParser initialized [2018-04-11 15:19:07,425 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,712 INFO L225 CDTParser]: Created temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG313126cae [2018-04-11 15:19:07,864 INFO L287 CDTParser]: IsIndexed: true [2018-04-11 15:19:07,864 INFO L288 CDTParser]: Found 1 translation units. [2018-04-11 15:19:07,865 INFO L168 CDTParser]: Scanning openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,873 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-11 15:19:07,873 INFO L215 ultiparseSymbolTable]: [2018-04-11 15:19:07,873 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-11 15:19:07,873 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____bswap_32 ('__bswap_32') in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,873 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____bswap_64 ('__bswap_64') in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,873 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,873 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspn ('cstrcspn') in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,873 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-11 15:19:07,873 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____uint16_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,873 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____fsid_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____off_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__daddr_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____quad_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____ino64_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____gid_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__clock_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____ino_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____pid_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__pthread_barrier_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__fd_mask in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__u_long in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__pthread_rwlockattr_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____u_quad_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__ushort in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__ulong in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__fsid_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__u_int32_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____daddr_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,874 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__clockid_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,875 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__suseconds_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,875 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__int64_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,875 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____WAIT_STATUS in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,875 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____clock_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,875 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____loff_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,875 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__pthread_condattr_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,875 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__u_int8_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,875 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____syscall_ulong_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,875 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__nlink_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,875 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__uint in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,875 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____fd_mask in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,875 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__pthread_rwlock_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,875 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____useconds_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,876 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____blksize_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,876 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__id_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,876 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____qaddr_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,876 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____fsblkcnt_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,876 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____sig_atomic_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,876 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____rlim64_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,876 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____uid_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,876 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____uint8_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,876 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__u_quad_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,876 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____uint64_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,877 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____fsword_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,877 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__loff_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,877 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__ssize_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,877 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____key_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,877 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____int64_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,877 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__sigset_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,877 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__pthread_mutex_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,877 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__register_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,877 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__pthread_barrierattr_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,878 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____syscall_slong_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,878 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__dev_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,878 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____u_int in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,878 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__time_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,878 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__pthread_key_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,878 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____blkcnt_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,878 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__fsfilcnt_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,878 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____ssize_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,878 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__int32_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,879 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__ino_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,879 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__pid_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,879 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____fsfilcnt64_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,879 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__int8_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,879 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__u_int64_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,879 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____mode_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,879 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____socklen_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,879 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____time_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,879 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__u_short in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,879 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____blkcnt64_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,880 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__ldiv_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,880 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__gid_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,880 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__u_int in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,880 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__timer_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,880 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____int8_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,880 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____fsblkcnt64_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,880 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__key_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,880 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____u_short in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,880 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__mode_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,881 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____fsfilcnt_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,881 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__pthread_mutexattr_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,881 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____nlink_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,881 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__fsblkcnt_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,881 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____timer_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,881 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____int32_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,881 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__pthread_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,881 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____id_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,881 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__wchar_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,881 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__fd_set in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,882 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__blksize_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,882 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__int16_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,882 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____dev_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,882 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__uid_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,882 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__lldiv_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,882 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__pthread_attr_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,882 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____off64_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,882 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____suseconds_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,882 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____caddr_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,882 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____u_char in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,883 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____rlim_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,883 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__caddr_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,883 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__pthread_cond_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,883 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__blkcnt_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,883 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__quad_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,883 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____clockid_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,883 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__pthread_spinlock_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,883 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____sigset_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,883 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____pthread_list_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,883 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__off_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,883 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__size_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,884 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____int16_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,884 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__u_char in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,884 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____uint32_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,884 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____u_long in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,884 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__pthread_once_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,884 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__div_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,884 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__u_int16_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,884 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____intptr_t in openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:07,897 INFO L330 CDTParser]: Deleted temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG313126cae [2018-04-11 15:19:07,900 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-11 15:19:07,901 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-11 15:19:07,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-11 15:19:07,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-11 15:19:07,906 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-11 15:19:07,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 03:19:07" (1/1) ... [2018-04-11 15:19:07,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c282ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 03:19:07, skipping insertion in model container [2018-04-11 15:19:07,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 03:19:07" (1/1) ... [2018-04-11 15:19:07,919 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 15:19:07,941 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 15:19:08,091 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 15:19:08,131 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 15:19:08,137 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 112 non ball SCCs. Number of states in SCCs 112. [2018-04-11 15:19:08,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 03:19:08 WrapperNode [2018-04-11 15:19:08,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-11 15:19:08,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-11 15:19:08,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-11 15:19:08,174 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-11 15:19:08,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 03:19:08" (1/1) ... [2018-04-11 15:19:08,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 03:19:08" (1/1) ... [2018-04-11 15:19:08,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 03:19:08" (1/1) ... [2018-04-11 15:19:08,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 03:19:08" (1/1) ... [2018-04-11 15:19:08,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 03:19:08" (1/1) ... [2018-04-11 15:19:08,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 03:19:08" (1/1) ... [2018-04-11 15:19:08,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 03:19:08" (1/1) ... [2018-04-11 15:19:08,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-11 15:19:08,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-11 15:19:08,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-11 15:19:08,220 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-11 15:19:08,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 03:19:08" (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 [2018-04-11 15:19:08,296 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-11 15:19:08,296 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-11 15:19:08,296 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____bswap_32 [2018-04-11 15:19:08,296 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____bswap_64 [2018-04-11 15:19:08,296 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspn [2018-04-11 15:19:08,296 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-11 15:19:08,296 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____bswap_32 [2018-04-11 15:19:08,296 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i____bswap_64 [2018-04-11 15:19:08,296 INFO L128 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-04-11 15:19:08,296 INFO L128 BoogieDeclarations]: Found specification of procedure atof [2018-04-11 15:19:08,296 INFO L128 BoogieDeclarations]: Found specification of procedure atoi [2018-04-11 15:19:08,297 INFO L128 BoogieDeclarations]: Found specification of procedure atol [2018-04-11 15:19:08,297 INFO L128 BoogieDeclarations]: Found specification of procedure atoll [2018-04-11 15:19:08,297 INFO L128 BoogieDeclarations]: Found specification of procedure strtod [2018-04-11 15:19:08,297 INFO L128 BoogieDeclarations]: Found specification of procedure strtof [2018-04-11 15:19:08,297 INFO L128 BoogieDeclarations]: Found specification of procedure strtold [2018-04-11 15:19:08,297 INFO L128 BoogieDeclarations]: Found specification of procedure strtol [2018-04-11 15:19:08,297 INFO L128 BoogieDeclarations]: Found specification of procedure strtoul [2018-04-11 15:19:08,297 INFO L128 BoogieDeclarations]: Found specification of procedure strtoq [2018-04-11 15:19:08,297 INFO L128 BoogieDeclarations]: Found specification of procedure strtouq [2018-04-11 15:19:08,298 INFO L128 BoogieDeclarations]: Found specification of procedure strtoll [2018-04-11 15:19:08,298 INFO L128 BoogieDeclarations]: Found specification of procedure strtoull [2018-04-11 15:19:08,298 INFO L128 BoogieDeclarations]: Found specification of procedure l64a [2018-04-11 15:19:08,298 INFO L128 BoogieDeclarations]: Found specification of procedure a64l [2018-04-11 15:19:08,298 INFO L128 BoogieDeclarations]: Found specification of procedure select [2018-04-11 15:19:08,298 INFO L128 BoogieDeclarations]: Found specification of procedure pselect [2018-04-11 15:19:08,298 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-04-11 15:19:08,298 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-04-11 15:19:08,298 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-04-11 15:19:08,299 INFO L128 BoogieDeclarations]: Found specification of procedure random [2018-04-11 15:19:08,299 INFO L128 BoogieDeclarations]: Found specification of procedure srandom [2018-04-11 15:19:08,299 INFO L128 BoogieDeclarations]: Found specification of procedure initstate [2018-04-11 15:19:08,299 INFO L128 BoogieDeclarations]: Found specification of procedure setstate [2018-04-11 15:19:08,299 INFO L128 BoogieDeclarations]: Found specification of procedure random_r [2018-04-11 15:19:08,299 INFO L128 BoogieDeclarations]: Found specification of procedure srandom_r [2018-04-11 15:19:08,299 INFO L128 BoogieDeclarations]: Found specification of procedure initstate_r [2018-04-11 15:19:08,299 INFO L128 BoogieDeclarations]: Found specification of procedure setstate_r [2018-04-11 15:19:08,299 INFO L128 BoogieDeclarations]: Found specification of procedure rand [2018-04-11 15:19:08,300 INFO L128 BoogieDeclarations]: Found specification of procedure srand [2018-04-11 15:19:08,300 INFO L128 BoogieDeclarations]: Found specification of procedure rand_r [2018-04-11 15:19:08,300 INFO L128 BoogieDeclarations]: Found specification of procedure drand48 [2018-04-11 15:19:08,300 INFO L128 BoogieDeclarations]: Found specification of procedure erand48 [2018-04-11 15:19:08,300 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48 [2018-04-11 15:19:08,300 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48 [2018-04-11 15:19:08,300 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48 [2018-04-11 15:19:08,300 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48 [2018-04-11 15:19:08,300 INFO L128 BoogieDeclarations]: Found specification of procedure srand48 [2018-04-11 15:19:08,301 INFO L128 BoogieDeclarations]: Found specification of procedure seed48 [2018-04-11 15:19:08,301 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48 [2018-04-11 15:19:08,301 INFO L128 BoogieDeclarations]: Found specification of procedure drand48_r [2018-04-11 15:19:08,301 INFO L128 BoogieDeclarations]: Found specification of procedure erand48_r [2018-04-11 15:19:08,301 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-04-11 15:19:08,301 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-04-11 15:19:08,301 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-04-11 15:19:08,301 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-04-11 15:19:08,301 INFO L128 BoogieDeclarations]: Found specification of procedure srand48_r [2018-04-11 15:19:08,301 INFO L128 BoogieDeclarations]: Found specification of procedure seed48_r [2018-04-11 15:19:08,302 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-04-11 15:19:08,302 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-04-11 15:19:08,302 INFO L128 BoogieDeclarations]: Found specification of procedure calloc [2018-04-11 15:19:08,302 INFO L128 BoogieDeclarations]: Found specification of procedure realloc [2018-04-11 15:19:08,302 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-04-11 15:19:08,302 INFO L128 BoogieDeclarations]: Found specification of procedure cfree [2018-04-11 15:19:08,302 INFO L128 BoogieDeclarations]: Found specification of procedure alloca [2018-04-11 15:19:08,302 INFO L128 BoogieDeclarations]: Found specification of procedure valloc [2018-04-11 15:19:08,302 INFO L128 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-04-11 15:19:08,302 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-04-11 15:19:08,303 INFO L128 BoogieDeclarations]: Found specification of procedure atexit [2018-04-11 15:19:08,303 INFO L128 BoogieDeclarations]: Found specification of procedure on_exit [2018-04-11 15:19:08,303 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-04-11 15:19:08,303 INFO L128 BoogieDeclarations]: Found specification of procedure _Exit [2018-04-11 15:19:08,303 INFO L128 BoogieDeclarations]: Found specification of procedure getenv [2018-04-11 15:19:08,303 INFO L128 BoogieDeclarations]: Found specification of procedure putenv [2018-04-11 15:19:08,303 INFO L128 BoogieDeclarations]: Found specification of procedure setenv [2018-04-11 15:19:08,303 INFO L128 BoogieDeclarations]: Found specification of procedure unsetenv [2018-04-11 15:19:08,303 INFO L128 BoogieDeclarations]: Found specification of procedure clearenv [2018-04-11 15:19:08,303 INFO L128 BoogieDeclarations]: Found specification of procedure mktemp [2018-04-11 15:19:08,303 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemp [2018-04-11 15:19:08,304 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemps [2018-04-11 15:19:08,304 INFO L128 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-04-11 15:19:08,304 INFO L128 BoogieDeclarations]: Found specification of procedure system [2018-04-11 15:19:08,304 INFO L128 BoogieDeclarations]: Found specification of procedure realpath [2018-04-11 15:19:08,304 INFO L128 BoogieDeclarations]: Found specification of procedure bsearch [2018-04-11 15:19:08,304 INFO L128 BoogieDeclarations]: Found specification of procedure qsort [2018-04-11 15:19:08,304 INFO L128 BoogieDeclarations]: Found specification of procedure abs [2018-04-11 15:19:08,304 INFO L128 BoogieDeclarations]: Found specification of procedure labs [2018-04-11 15:19:08,304 INFO L128 BoogieDeclarations]: Found specification of procedure llabs [2018-04-11 15:19:08,304 INFO L128 BoogieDeclarations]: Found specification of procedure div [2018-04-11 15:19:08,305 INFO L128 BoogieDeclarations]: Found specification of procedure ldiv [2018-04-11 15:19:08,305 INFO L128 BoogieDeclarations]: Found specification of procedure lldiv [2018-04-11 15:19:08,305 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt [2018-04-11 15:19:08,305 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt [2018-04-11 15:19:08,305 INFO L128 BoogieDeclarations]: Found specification of procedure gcvt [2018-04-11 15:19:08,305 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt [2018-04-11 15:19:08,305 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt [2018-04-11 15:19:08,305 INFO L128 BoogieDeclarations]: Found specification of procedure qgcvt [2018-04-11 15:19:08,305 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-04-11 15:19:08,305 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-04-11 15:19:08,306 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-04-11 15:19:08,306 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-04-11 15:19:08,306 INFO L128 BoogieDeclarations]: Found specification of procedure mblen [2018-04-11 15:19:08,306 INFO L128 BoogieDeclarations]: Found specification of procedure mbtowc [2018-04-11 15:19:08,306 INFO L128 BoogieDeclarations]: Found specification of procedure wctomb [2018-04-11 15:19:08,306 INFO L128 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-04-11 15:19:08,306 INFO L128 BoogieDeclarations]: Found specification of procedure wcstombs [2018-04-11 15:19:08,306 INFO L128 BoogieDeclarations]: Found specification of procedure rpmatch [2018-04-11 15:19:08,306 INFO L128 BoogieDeclarations]: Found specification of procedure getsubopt [2018-04-11 15:19:08,306 INFO L128 BoogieDeclarations]: Found specification of procedure getloadavg [2018-04-11 15:19:08,306 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-04-11 15:19:08,307 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspn [2018-04-11 15:19:08,307 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-11 15:19:08,307 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-11 15:19:08,307 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-11 15:19:08,307 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-11 15:19:08,307 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-11 15:19:08,307 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-11 15:19:08,307 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-11 15:19:08,307 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-11 15:19:08,567 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-11 15:19:08,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 03:19:08 BoogieIcfgContainer [2018-04-11 15:19:08,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-11 15:19:08,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-11 15:19:08,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-11 15:19:08,570 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-11 15:19:08,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.04 03:19:07" (1/3) ... [2018-04-11 15:19:08,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627eedfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 03:19:08, skipping insertion in model container [2018-04-11 15:19:08,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 03:19:08" (2/3) ... [2018-04-11 15:19:08,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627eedfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 03:19:08, skipping insertion in model container [2018-04-11 15:19:08,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 03:19:08" (3/3) ... [2018-04-11 15:19:08,572 INFO L107 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-04-11 15:19:08,577 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-11 15:19:08,582 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-04-11 15:19:08,604 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-11 15:19:08,605 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-11 15:19:08,605 INFO L370 AbstractCegarLoop]: Hoare is false [2018-04-11 15:19:08,605 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-11 15:19:08,605 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-11 15:19:08,605 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-11 15:19:08,605 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-11 15:19:08,605 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-11 15:19:08,605 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-11 15:19:08,606 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-11 15:19:08,613 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-04-11 15:19:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-11 15:19:08,618 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 15:19:08,619 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 15:19:08,619 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr3RequiresViolation]=== [2018-04-11 15:19:08,622 INFO L82 PathProgramCache]: Analyzing trace with hash 233534974, now seen corresponding path program 1 times [2018-04-11 15:19:08,623 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-11 15:19:08,623 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-11 15:19:08,651 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:08,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 15:19:08,651 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:08,685 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 15:19:08,700 INFO L431 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-04-11 15:19:08,700 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 15:19:08,700 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-11 15:19:08,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 15:19:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:08,732 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 15:19:08,766 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 [2018-04-11 15:19:08,767 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:08,770 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:08,771 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-11 15:19:08,788 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 15:19:08,789 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 15:19:08,790 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 [2018-04-11 15:19:08,791 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:08,797 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. [2018-04-11 15:19:08,797 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2018-04-11 15:19:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 15:19:08,809 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 15:19:08,810 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-04-11 15:19:08,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-11 15:19:08,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-11 15:19:08,819 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-04-11 15:19:08,820 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2018-04-11 15:19:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 15:19:08,937 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2018-04-11 15:19:08,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-11 15:19:08,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-04-11 15:19:08,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 15:19:08,947 INFO L225 Difference]: With dead ends: 44 [2018-04-11 15:19:08,948 INFO L226 Difference]: Without dead ends: 41 [2018-04-11 15:19:08,949 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-04-11 15:19:08,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-04-11 15:19:08,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-04-11 15:19:08,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-04-11 15:19:08,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-04-11 15:19:08,977 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 13 [2018-04-11 15:19:08,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 15:19:08,977 INFO L459 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-04-11 15:19:08,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-11 15:19:08,977 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-04-11 15:19:08,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-11 15:19:08,978 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 15:19:08,978 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 15:19:08,978 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr3RequiresViolation]=== [2018-04-11 15:19:08,978 INFO L82 PathProgramCache]: Analyzing trace with hash 233534975, now seen corresponding path program 1 times [2018-04-11 15:19:08,978 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-11 15:19:08,978 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-11 15:19:08,979 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:08,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 15:19:08,979 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:08,990 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 15:19:08,996 INFO L431 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-04-11 15:19:08,996 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 15:19:08,996 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-11 15:19:08,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 15:19:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:09,022 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 15:19:09,030 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 [2018-04-11 15:19:09,031 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:09,040 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 [2018-04-11 15:19:09,041 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:09,044 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:09,045 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:17 [2018-04-11 15:19:09,064 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 15:19:09,065 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 15:19:09,065 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 [2018-04-11 15:19:09,066 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:09,074 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 [2018-04-11 15:19:09,074 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:09,081 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:09,081 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:28, output treesize:12 [2018-04-11 15:19:09,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 15:19:09,092 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 15:19:09,092 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-04-11 15:19:09,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-11 15:19:09,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-11 15:19:09,093 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-04-11 15:19:09,094 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 6 states. [2018-04-11 15:19:09,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 15:19:09,168 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-04-11 15:19:09,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-11 15:19:09,169 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-04-11 15:19:09,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 15:19:09,170 INFO L225 Difference]: With dead ends: 40 [2018-04-11 15:19:09,170 INFO L226 Difference]: Without dead ends: 40 [2018-04-11 15:19:09,171 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 [2018-04-11 15:19:09,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-04-11 15:19:09,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-04-11 15:19:09,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-04-11 15:19:09,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2018-04-11 15:19:09,174 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 13 [2018-04-11 15:19:09,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 15:19:09,174 INFO L459 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2018-04-11 15:19:09,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-11 15:19:09,175 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2018-04-11 15:19:09,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-04-11 15:19:09,175 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 15:19:09,175 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 15:19:09,175 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr3RequiresViolation]=== [2018-04-11 15:19:09,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1350350365, now seen corresponding path program 1 times [2018-04-11 15:19:09,175 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-11 15:19:09,176 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-11 15:19:09,176 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:09,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 15:19:09,177 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:09,189 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 15:19:09,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 15:19:09,214 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 15:19:09,214 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-04-11 15:19:09,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-11 15:19:09,214 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-11 15:19:09,214 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-11 15:19:09,215 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 4 states. [2018-04-11 15:19:09,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 15:19:09,245 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2018-04-11 15:19:09,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-11 15:19:09,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-04-11 15:19:09,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 15:19:09,246 INFO L225 Difference]: With dead ends: 39 [2018-04-11 15:19:09,246 INFO L226 Difference]: Without dead ends: 39 [2018-04-11 15:19:09,246 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 [2018-04-11 15:19:09,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-04-11 15:19:09,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-04-11 15:19:09,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-04-11 15:19:09,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-04-11 15:19:09,248 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 14 [2018-04-11 15:19:09,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 15:19:09,249 INFO L459 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-04-11 15:19:09,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-11 15:19:09,249 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-04-11 15:19:09,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-04-11 15:19:09,249 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 15:19:09,249 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 15:19:09,249 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr3RequiresViolation]=== [2018-04-11 15:19:09,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1350350364, now seen corresponding path program 1 times [2018-04-11 15:19:09,249 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-11 15:19:09,250 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-11 15:19:09,250 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:09,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 15:19:09,250 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:09,258 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 15:19:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 15:19:09,296 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 15:19:09,296 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-04-11 15:19:09,297 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-11 15:19:09,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-11 15:19:09,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-11 15:19:09,297 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 5 states. [2018-04-11 15:19:09,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 15:19:09,321 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2018-04-11 15:19:09,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-11 15:19:09,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-04-11 15:19:09,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 15:19:09,322 INFO L225 Difference]: With dead ends: 38 [2018-04-11 15:19:09,330 INFO L226 Difference]: Without dead ends: 38 [2018-04-11 15:19:09,331 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 [2018-04-11 15:19:09,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-04-11 15:19:09,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-04-11 15:19:09,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-04-11 15:19:09,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-04-11 15:19:09,334 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 14 [2018-04-11 15:19:09,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 15:19:09,334 INFO L459 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-04-11 15:19:09,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-11 15:19:09,335 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-04-11 15:19:09,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-04-11 15:19:09,335 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 15:19:09,335 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 15:19:09,335 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr3RequiresViolation]=== [2018-04-11 15:19:09,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1574771629, now seen corresponding path program 1 times [2018-04-11 15:19:09,336 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-11 15:19:09,336 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-11 15:19:09,337 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:09,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 15:19:09,337 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:09,350 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 15:19:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 15:19:09,383 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 15:19:09,383 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-04-11 15:19:09,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-11 15:19:09,384 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-11 15:19:09,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-04-11 15:19:09,384 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 6 states. [2018-04-11 15:19:09,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 15:19:09,429 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2018-04-11 15:19:09,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-11 15:19:09,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-04-11 15:19:09,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 15:19:09,429 INFO L225 Difference]: With dead ends: 37 [2018-04-11 15:19:09,430 INFO L226 Difference]: Without dead ends: 37 [2018-04-11 15:19:09,430 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 [2018-04-11 15:19:09,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-04-11 15:19:09,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-04-11 15:19:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-04-11 15:19:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-04-11 15:19:09,433 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 19 [2018-04-11 15:19:09,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 15:19:09,433 INFO L459 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-04-11 15:19:09,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-11 15:19:09,433 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-04-11 15:19:09,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-04-11 15:19:09,434 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 15:19:09,434 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 15:19:09,434 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr3RequiresViolation]=== [2018-04-11 15:19:09,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1574771628, now seen corresponding path program 1 times [2018-04-11 15:19:09,434 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-11 15:19:09,434 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-11 15:19:09,435 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:09,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 15:19:09,435 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:09,446 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 15:19:09,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 15:19:09,530 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 15:19:09,530 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-04-11 15:19:09,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-11 15:19:09,530 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-11 15:19:09,531 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-04-11 15:19:09,531 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 9 states. [2018-04-11 15:19:09,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 15:19:09,629 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2018-04-11 15:19:09,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-04-11 15:19:09,629 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-04-11 15:19:09,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 15:19:09,631 INFO L225 Difference]: With dead ends: 41 [2018-04-11 15:19:09,631 INFO L226 Difference]: Without dead ends: 41 [2018-04-11 15:19:09,631 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-04-11 15:19:09,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-04-11 15:19:09,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2018-04-11 15:19:09,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-04-11 15:19:09,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2018-04-11 15:19:09,634 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 19 [2018-04-11 15:19:09,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 15:19:09,634 INFO L459 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2018-04-11 15:19:09,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-11 15:19:09,634 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2018-04-11 15:19:09,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-04-11 15:19:09,634 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 15:19:09,634 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] [2018-04-11 15:19:09,634 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr3RequiresViolation]=== [2018-04-11 15:19:09,634 INFO L82 PathProgramCache]: Analyzing trace with hash -93842083, now seen corresponding path program 1 times [2018-04-11 15:19:09,634 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-11 15:19:09,635 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-11 15:19:09,635 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:09,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 15:19:09,635 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:09,641 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 15:19:09,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 15:19:09,682 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 15:19:09,683 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-04-11 15:19:09,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-11 15:19:09,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-11 15:19:09,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-04-11 15:19:09,683 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 7 states. [2018-04-11 15:19:09,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 15:19:09,759 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-04-11 15:19:09,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-11 15:19:09,760 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-04-11 15:19:09,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 15:19:09,760 INFO L225 Difference]: With dead ends: 40 [2018-04-11 15:19:09,760 INFO L226 Difference]: Without dead ends: 40 [2018-04-11 15:19:09,760 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-04-11 15:19:09,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-04-11 15:19:09,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-04-11 15:19:09,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-04-11 15:19:09,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-04-11 15:19:09,762 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 22 [2018-04-11 15:19:09,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 15:19:09,762 INFO L459 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-04-11 15:19:09,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-11 15:19:09,763 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-04-11 15:19:09,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-04-11 15:19:09,763 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 15:19:09,763 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] [2018-04-11 15:19:09,763 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr3RequiresViolation]=== [2018-04-11 15:19:09,763 INFO L82 PathProgramCache]: Analyzing trace with hash -93842082, now seen corresponding path program 1 times [2018-04-11 15:19:09,763 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-11 15:19:09,763 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-11 15:19:09,764 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:09,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 15:19:09,764 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:09,771 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 15:19:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 15:19:09,830 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 15:19:09,831 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-04-11 15:19:09,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-04-11 15:19:09,831 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-04-11 15:19:09,831 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-04-11 15:19:09,831 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 10 states. [2018-04-11 15:19:09,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 15:19:09,906 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-04-11 15:19:09,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-04-11 15:19:09,906 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-04-11 15:19:09,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 15:19:09,906 INFO L225 Difference]: With dead ends: 43 [2018-04-11 15:19:09,906 INFO L226 Difference]: Without dead ends: 43 [2018-04-11 15:19:09,907 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-04-11 15:19:09,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-04-11 15:19:09,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-04-11 15:19:09,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-04-11 15:19:09,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-04-11 15:19:09,908 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 22 [2018-04-11 15:19:09,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 15:19:09,909 INFO L459 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-04-11 15:19:09,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-04-11 15:19:09,909 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-04-11 15:19:09,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-04-11 15:19:09,909 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 15:19:09,909 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, 1, 1] [2018-04-11 15:19:09,909 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr3RequiresViolation]=== [2018-04-11 15:19:09,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1165056638, now seen corresponding path program 1 times [2018-04-11 15:19:09,909 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-11 15:19:09,909 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-11 15:19:09,910 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:09,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 15:19:09,910 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:09,921 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 15:19:10,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 15:19:10,030 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 15:19:10,030 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-04-11 15:19:10,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-11 15:19:10,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-11 15:19:10,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-04-11 15:19:10,031 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 12 states. [2018-04-11 15:19:10,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 15:19:10,237 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2018-04-11 15:19:10,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-11 15:19:10,237 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2018-04-11 15:19:10,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 15:19:10,238 INFO L225 Difference]: With dead ends: 79 [2018-04-11 15:19:10,238 INFO L226 Difference]: Without dead ends: 79 [2018-04-11 15:19:10,238 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2018-04-11 15:19:10,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-04-11 15:19:10,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 63. [2018-04-11 15:19:10,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-04-11 15:19:10,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2018-04-11 15:19:10,241 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 27 [2018-04-11 15:19:10,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 15:19:10,242 INFO L459 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2018-04-11 15:19:10,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-11 15:19:10,242 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2018-04-11 15:19:10,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-04-11 15:19:10,242 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 15:19:10,242 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, 1, 1] [2018-04-11 15:19:10,242 INFO L408 AbstractCegarLoop]: === Iteration 10 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr3RequiresViolation]=== [2018-04-11 15:19:10,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1982705088, now seen corresponding path program 1 times [2018-04-11 15:19:10,242 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-11 15:19:10,243 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-11 15:19:10,243 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:10,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 15:19:10,243 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:10,252 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 15:19:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 15:19:10,402 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 15:19:10,402 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-11 15:19:10,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 15:19:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:10,437 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 15:19:10,440 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 [2018-04-11 15:19:10,441 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:10,444 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:10,444 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 15:19:10,480 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 [2018-04-11 15:19:10,482 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 [2018-04-11 15:19:10,482 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:10,483 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:10,487 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:10,487 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2018-04-11 15:19:10,630 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 22 treesize of output 18 [2018-04-11 15:19:10,644 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 [2018-04-11 15:19:10,644 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-11 15:19:10,650 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 15:19:10,659 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-11 15:19:10,659 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:40, output treesize:54 [2018-04-11 15:19:10,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 15:19:10,768 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 15:19:10,768 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2018-04-11 15:19:10,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-04-11 15:19:10,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-04-11 15:19:10,769 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2018-04-11 15:19:10,769 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 25 states. [2018-04-11 15:19:11,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 15:19:11,487 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2018-04-11 15:19:11,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-11 15:19:11,488 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 27 [2018-04-11 15:19:11,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 15:19:11,490 INFO L225 Difference]: With dead ends: 79 [2018-04-11 15:19:11,490 INFO L226 Difference]: Without dead ends: 79 [2018-04-11 15:19:11,490 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=194, Invalid=1212, Unknown=0, NotChecked=0, Total=1406 [2018-04-11 15:19:11,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-04-11 15:19:11,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2018-04-11 15:19:11,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-04-11 15:19:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2018-04-11 15:19:11,493 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 27 [2018-04-11 15:19:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 15:19:11,493 INFO L459 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2018-04-11 15:19:11,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-04-11 15:19:11,494 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2018-04-11 15:19:11,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-04-11 15:19:11,494 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 15:19:11,494 INFO L355 BasicCegarLoop]: trace histogram [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, 1] [2018-04-11 15:19:11,494 INFO L408 AbstractCegarLoop]: === Iteration 11 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr3RequiresViolation]=== [2018-04-11 15:19:11,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1757089814, now seen corresponding path program 1 times [2018-04-11 15:19:11,495 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-11 15:19:11,495 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-11 15:19:11,495 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:11,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 15:19:11,495 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:11,505 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 15:19:11,509 INFO L431 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-04-11 15:19:11,509 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 15:19:11,509 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-11 15:19:11,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 15:19:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:11,540 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 15:19:11,544 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 6 treesize of output 5 [2018-04-11 15:19:11,544 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:11,549 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 [2018-04-11 15:19:11,550 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:11,554 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:11,554 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-04-11 15:19:11,569 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 15:19:11,570 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 [2018-04-11 15:19:11,571 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:11,579 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 15:19:11,580 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 15:19:11,580 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 [2018-04-11 15:19:11,580 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:11,585 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:11,585 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-04-11 15:19:11,607 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 [2018-04-11 15:19:11,608 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 [2018-04-11 15:19:11,609 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:11,610 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:11,616 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:11,617 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:36, output treesize:32 [2018-04-11 15:19:11,636 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 [2018-04-11 15:19:11,638 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 [2018-04-11 15:19:11,639 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:11,643 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:11,651 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-11 15:19:11,651 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:39 [2018-04-11 15:19:11,760 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 [2018-04-11 15:19:11,762 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 [2018-04-11 15:19:11,762 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:11,774 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 [2018-04-11 15:19:11,774 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-04-11 15:19:11,776 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 15:19:11,784 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-11 15:19:11,784 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:56, output treesize:54 [2018-04-11 15:19:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 15:19:11,905 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-04-11 15:19:11,905 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-04-11 15:19:11,905 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-11 15:19:11,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-11 15:19:11,906 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2018-04-11 15:19:11,906 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand 16 states. [2018-04-11 15:19:12,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 15:19:12,580 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2018-04-11 15:19:12,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-04-11 15:19:12,580 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 28 [2018-04-11 15:19:12,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 15:19:12,581 INFO L225 Difference]: With dead ends: 100 [2018-04-11 15:19:12,581 INFO L226 Difference]: Without dead ends: 100 [2018-04-11 15:19:12,581 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2018-04-11 15:19:12,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-04-11 15:19:12,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2018-04-11 15:19:12,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-04-11 15:19:12,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2018-04-11 15:19:12,589 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 28 [2018-04-11 15:19:12,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 15:19:12,590 INFO L459 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2018-04-11 15:19:12,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-11 15:19:12,590 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2018-04-11 15:19:12,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-04-11 15:19:12,590 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 15:19:12,590 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, 1] [2018-04-11 15:19:12,590 INFO L408 AbstractCegarLoop]: === Iteration 12 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr3RequiresViolation]=== [2018-04-11 15:19:12,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1220195187, now seen corresponding path program 1 times [2018-04-11 15:19:12,591 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-11 15:19:12,591 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-11 15:19:12,591 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:12,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 15:19:12,591 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:12,601 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 15:19:12,604 INFO L431 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-04-11 15:19:12,604 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 15:19:12,604 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-11 15:19:12,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 15:19:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:12,627 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 15:19:12,661 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 15:19:12,662 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 27 [2018-04-11 15:19:12,665 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 23 treesize of output 15 [2018-04-11 15:19:12,665 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:12,669 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:12,673 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. [2018-04-11 15:19:12,674 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-04-11 15:19:12,699 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc8.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc8.base| 1))) (and (= 0 (select .cse0 |c_main_#t~malloc9.base|)) (= |c_#valid| (store (store .cse0 |c_main_#t~malloc9.base| 1) |main_#t~malloc8.base| 0)) (= 0 (select |c_old(#valid)| |main_#t~malloc8.base|))))) is different from true [2018-04-11 15:19:12,704 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc8.base| Int) (|main_#t~malloc9.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc8.base| 1))) (and (= 0 (select .cse0 |main_#t~malloc9.base|)) (= |c_#valid| (store (store (store .cse0 |main_#t~malloc9.base| 1) |main_#t~malloc8.base| 0) |main_#t~malloc9.base| 0)) (= 0 (select |c_old(#valid)| |main_#t~malloc8.base|))))) is different from true [2018-04-11 15:19:12,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 15:19:12,709 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 15:19:12,709 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-04-11 15:19:12,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-11 15:19:12,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-11 15:19:12,709 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=22, Unknown=2, NotChecked=18, Total=56 [2018-04-11 15:19:12,709 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand 8 states. [2018-04-11 15:19:12,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 15:19:12,771 INFO L93 Difference]: Finished difference Result 92 states and 105 transitions. [2018-04-11 15:19:12,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-11 15:19:12,771 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-04-11 15:19:12,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 15:19:12,772 INFO L225 Difference]: With dead ends: 92 [2018-04-11 15:19:12,772 INFO L226 Difference]: Without dead ends: 82 [2018-04-11 15:19:12,772 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=30, Unknown=2, NotChecked=22, Total=72 [2018-04-11 15:19:12,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-04-11 15:19:12,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-04-11 15:19:12,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-04-11 15:19:12,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2018-04-11 15:19:12,775 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 32 [2018-04-11 15:19:12,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 15:19:12,775 INFO L459 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2018-04-11 15:19:12,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-11 15:19:12,776 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2018-04-11 15:19:12,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-04-11 15:19:12,776 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 15:19:12,776 INFO L355 BasicCegarLoop]: trace histogram [3, 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] [2018-04-11 15:19:12,776 INFO L408 AbstractCegarLoop]: === Iteration 13 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr3RequiresViolation]=== [2018-04-11 15:19:12,777 INFO L82 PathProgramCache]: Analyzing trace with hash 567354848, now seen corresponding path program 2 times [2018-04-11 15:19:12,777 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-11 15:19:12,777 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-11 15:19:12,777 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:12,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 15:19:12,778 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:12,787 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 15:19:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 15:19:13,047 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 15:19:13,047 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-11 15:19:13,047 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-11 15:19:13,068 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-11 15:19:13,068 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 15:19:13,070 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 15:19:13,075 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 [2018-04-11 15:19:13,075 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:13,078 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:13,078 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 15:19:13,084 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 [2018-04-11 15:19:13,085 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 [2018-04-11 15:19:13,086 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:13,087 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:13,089 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:13,089 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2018-04-11 15:19:13,214 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 21 treesize of output 17 [2018-04-11 15:19:13,218 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 [2018-04-11 15:19:13,219 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-11 15:19:13,221 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 15:19:13,226 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-11 15:19:13,226 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:35, output treesize:38 [2018-04-11 15:19:13,331 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 15:19:13,331 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 15:19:13,331 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2018-04-11 15:19:13,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-04-11 15:19:13,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-04-11 15:19:13,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2018-04-11 15:19:13,332 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 26 states. [2018-04-11 15:19:14,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 15:19:14,213 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2018-04-11 15:19:14,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-04-11 15:19:14,214 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 32 [2018-04-11 15:19:14,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 15:19:14,215 INFO L225 Difference]: With dead ends: 115 [2018-04-11 15:19:14,215 INFO L226 Difference]: Without dead ends: 115 [2018-04-11 15:19:14,216 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=251, Invalid=1555, Unknown=0, NotChecked=0, Total=1806 [2018-04-11 15:19:14,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-04-11 15:19:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 92. [2018-04-11 15:19:14,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-04-11 15:19:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2018-04-11 15:19:14,220 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 32 [2018-04-11 15:19:14,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 15:19:14,220 INFO L459 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2018-04-11 15:19:14,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-04-11 15:19:14,220 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2018-04-11 15:19:14,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-04-11 15:19:14,221 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 15:19:14,221 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 15:19:14,221 INFO L408 AbstractCegarLoop]: === Iteration 14 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr3RequiresViolation]=== [2018-04-11 15:19:14,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1824027372, now seen corresponding path program 2 times [2018-04-11 15:19:14,221 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-11 15:19:14,221 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-11 15:19:14,222 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:14,222 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 15:19:14,222 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:14,232 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 15:19:14,241 INFO L431 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-04-11 15:19:14,241 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 15:19:14,241 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-11 15:19:14,242 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-11 15:19:14,272 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-11 15:19:14,272 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 15:19:14,276 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 15:19:14,293 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 [2018-04-11 15:19:14,293 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:14,299 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 [2018-04-11 15:19:14,299 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:14,302 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:14,302 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:17 [2018-04-11 15:19:14,312 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 15:19:14,313 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 [2018-04-11 15:19:14,313 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:14,320 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 15:19:14,320 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 15:19:14,321 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 [2018-04-11 15:19:14,321 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:14,324 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:14,325 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2018-04-11 15:19:14,340 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 [2018-04-11 15:19:14,341 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 [2018-04-11 15:19:14,341 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:14,342 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:14,347 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:14,347 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:34, output treesize:30 [2018-04-11 15:19:14,358 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 [2018-04-11 15:19:14,359 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 [2018-04-11 15:19:14,359 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:14,362 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:14,367 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. [2018-04-11 15:19:14,367 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:37 [2018-04-11 15:19:14,490 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 33 treesize of output 31 [2018-04-11 15:19:14,492 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 [2018-04-11 15:19:14,492 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:14,498 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 [2018-04-11 15:19:14,499 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-04-11 15:19:14,501 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 15:19:14,507 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-11 15:19:14,507 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:56, output treesize:46 [2018-04-11 15:19:14,670 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 15:19:14,670 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-04-11 15:19:14,670 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-04-11 15:19:14,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-04-11 15:19:14,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-04-11 15:19:14,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2018-04-11 15:19:14,671 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand 20 states. [2018-04-11 15:19:15,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 15:19:15,379 INFO L93 Difference]: Finished difference Result 126 states and 138 transitions. [2018-04-11 15:19:15,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-04-11 15:19:15,379 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 37 [2018-04-11 15:19:15,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 15:19:15,380 INFO L225 Difference]: With dead ends: 126 [2018-04-11 15:19:15,380 INFO L226 Difference]: Without dead ends: 126 [2018-04-11 15:19:15,380 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=1047, Unknown=0, NotChecked=0, Total=1190 [2018-04-11 15:19:15,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-04-11 15:19:15,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 122. [2018-04-11 15:19:15,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-04-11 15:19:15,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 136 transitions. [2018-04-11 15:19:15,383 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 136 transitions. Word has length 37 [2018-04-11 15:19:15,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 15:19:15,383 INFO L459 AbstractCegarLoop]: Abstraction has 122 states and 136 transitions. [2018-04-11 15:19:15,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-04-11 15:19:15,383 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 136 transitions. [2018-04-11 15:19:15,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-04-11 15:19:15,383 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 15:19:15,384 INFO L355 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 15:19:15,384 INFO L408 AbstractCegarLoop]: === Iteration 15 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr3RequiresViolation]=== [2018-04-11 15:19:15,384 INFO L82 PathProgramCache]: Analyzing trace with hash -131754432, now seen corresponding path program 3 times [2018-04-11 15:19:15,384 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-11 15:19:15,384 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-11 15:19:15,384 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:15,384 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 15:19:15,384 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:15,390 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 15:19:15,509 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-04-11 15:19:15,509 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 15:19:15,509 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-11 15:19:15,509 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-11 15:19:15,544 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-04-11 15:19:15,544 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 15:19:15,547 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 15:19:15,551 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 [2018-04-11 15:19:15,552 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:15,582 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:15,582 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 15:19:15,589 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 [2018-04-11 15:19:15,592 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 [2018-04-11 15:19:15,592 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:15,600 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:15,601 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:15,601 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-04-11 15:19:15,631 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 21 treesize of output 17 [2018-04-11 15:19:15,640 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 [2018-04-11 15:19:15,664 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-11 15:19:15,667 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 15:19:15,670 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-11 15:19:15,670 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:29, output treesize:32 [2018-04-11 15:19:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-04-11 15:19:15,716 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 15:19:15,716 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2018-04-11 15:19:15,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-04-11 15:19:15,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-04-11 15:19:15,716 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2018-04-11 15:19:15,716 INFO L87 Difference]: Start difference. First operand 122 states and 136 transitions. Second operand 17 states. [2018-04-11 15:19:16,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 15:19:16,039 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2018-04-11 15:19:16,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-04-11 15:19:16,039 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 37 [2018-04-11 15:19:16,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 15:19:16,039 INFO L225 Difference]: With dead ends: 121 [2018-04-11 15:19:16,039 INFO L226 Difference]: Without dead ends: 121 [2018-04-11 15:19:16,040 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=646, Unknown=0, NotChecked=0, Total=812 [2018-04-11 15:19:16,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-04-11 15:19:16,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 85. [2018-04-11 15:19:16,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-04-11 15:19:16,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2018-04-11 15:19:16,042 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 37 [2018-04-11 15:19:16,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 15:19:16,042 INFO L459 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2018-04-11 15:19:16,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-04-11 15:19:16,042 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2018-04-11 15:19:16,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-04-11 15:19:16,043 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 15:19:16,043 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 15:19:16,043 INFO L408 AbstractCegarLoop]: === Iteration 16 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcspn_alloca_true_valid_memsafety_true_termination_i__cstrcspnErr3RequiresViolation]=== [2018-04-11 15:19:16,043 INFO L82 PathProgramCache]: Analyzing trace with hash 401743658, now seen corresponding path program 3 times [2018-04-11 15:19:16,043 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-04-11 15:19:16,043 INFO L68 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-04-11 15:19:16,044 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:16,044 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 15:19:16,044 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 15:19:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 15:19:16,053 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 15:19:16,067 INFO L431 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-04-11 15:19:16,067 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 15:19:16,067 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-04-11 15:19:16,067 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-11 15:19:16,099 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-04-11 15:19:16,099 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 15:19:16,104 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 15:19:16,109 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 [2018-04-11 15:19:16,109 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:16,115 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 [2018-04-11 15:19:16,115 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:16,119 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:16,119 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-04-11 15:19:16,132 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 15:19:16,133 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 15:19:16,134 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 [2018-04-11 15:19:16,134 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:16,142 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 [2018-04-11 15:19:16,143 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:16,148 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:16,148 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-04-11 15:19:16,168 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 [2018-04-11 15:19:16,169 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 [2018-04-11 15:19:16,169 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:16,171 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:16,175 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:16,175 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2018-04-11 15:19:16,199 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 [2018-04-11 15:19:16,201 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 [2018-04-11 15:19:16,201 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:16,206 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 15:19:16,211 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-11 15:19:16,211 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:28 [2018-04-11 15:19:16,310 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 [2018-04-11 15:19:16,313 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 [2018-04-11 15:19:16,313 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 15:19:16,325 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 [2018-04-11 15:19:16,326 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-04-11 15:19:16,329 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 15:19:16,337 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-11 15:19:16,337 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2018-04-11 15:19:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-04-11 15:19:16,467 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-04-11 15:19:16,467 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-04-11 15:19:16,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-11 15:19:16,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-11 15:19:16,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2018-04-11 15:19:16,468 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 16 states. [2018-04-11 15:19:17,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 15:19:17,076 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2018-04-11 15:19:17,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-11 15:19:17,077 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2018-04-11 15:19:17,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 15:19:17,077 INFO L225 Difference]: With dead ends: 93 [2018-04-11 15:19:17,077 INFO L226 Difference]: Without dead ends: 0 [2018-04-11 15:19:17,077 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2018-04-11 15:19:17,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-04-11 15:19:17,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-04-11 15:19:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-04-11 15:19:17,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-04-11 15:19:17,078 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2018-04-11 15:19:17,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 15:19:17,078 INFO L459 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-04-11 15:19:17,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-11 15:19:17,078 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-04-11 15:19:17,079 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-04-11 15:19:17,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.04 03:19:17 BoogieIcfgContainer [2018-04-11 15:19:17,081 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-11 15:19:17,082 INFO L168 Benchmark]: Toolchain (without parser) took 9181.21 ms. Allocated memory was 405.8 MB in the beginning and 756.5 MB in the end (delta: 350.7 MB). Free memory was 337.6 MB in the beginning and 625.2 MB in the end (delta: -287.6 MB). Peak memory consumption was 63.1 MB. Max. memory is 5.3 GB. [2018-04-11 15:19:17,083 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 405.8 MB. Free memory is still 364.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-11 15:19:17,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.98 ms. Allocated memory is still 405.8 MB. Free memory was 337.6 MB in the beginning and 313.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 5.3 GB. [2018-04-11 15:19:17,083 INFO L168 Benchmark]: Boogie Preprocessor took 46.12 ms. Allocated memory is still 405.8 MB. Free memory was 313.8 MB in the beginning and 311.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-04-11 15:19:17,083 INFO L168 Benchmark]: RCFGBuilder took 348.18 ms. Allocated memory was 405.8 MB in the beginning and 597.7 MB in the end (delta: 191.9 MB). Free memory was 311.1 MB in the beginning and 533.1 MB in the end (delta: -222.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 5.3 GB. [2018-04-11 15:19:17,084 INFO L168 Benchmark]: TraceAbstraction took 8513.27 ms. Allocated memory was 597.7 MB in the beginning and 756.5 MB in the end (delta: 158.9 MB). Free memory was 533.1 MB in the beginning and 625.2 MB in the end (delta: -92.1 MB). Peak memory consumption was 66.8 MB. Max. memory is 5.3 GB. [2018-04-11 15:19:17,085 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 405.8 MB. Free memory is still 364.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 270.98 ms. Allocated memory is still 405.8 MB. Free memory was 337.6 MB in the beginning and 313.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 46.12 ms. Allocated memory is still 405.8 MB. Free memory was 313.8 MB in the beginning and 311.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 348.18 ms. Allocated memory was 405.8 MB in the beginning and 597.7 MB in the end (delta: 191.9 MB). Free memory was 311.1 MB in the beginning and 533.1 MB in the end (delta: -222.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 5.3 GB. * TraceAbstraction took 8513.27 ms. Allocated memory was 597.7 MB in the beginning and 756.5 MB in the end (delta: 158.9 MB). Free memory was 533.1 MB in the beginning and 625.2 MB in the end (delta: -92.1 MB). Peak memory consumption was 66.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 566]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 565]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 566]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 554]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 565]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 549]: 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: 549]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 9 error locations. SAFE Result, 8.4s OverallTime, 16 OverallIterations, 4 TraceHistogramMax, 4.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 457 SDtfs, 853 SDslu, 2317 SDs, 0 SdLazy, 2507 SolverSat, 171 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 459 GetRequests, 177 SyntacticMatches, 7 SemanticMatches, 275 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=14, 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, 16 MinimizatonAttempts, 101 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 667 NumberOfCodeBlocks, 667 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 479 ConstructedInterpolants, 66 QuantifiedInterpolants, 189015 SizeOfPredicates, 100 NumberOfNonLiveVariables, 1288 ConjunctsInSsa, 304 ConjunctsInUnsatCore, 19 InterpolantComputations, 10 PerfectInterpolantSequences, 33/120 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_cstrcspn-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-11_15-19-17-092.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-11_15-19-17-092.csv Received shutdown request...