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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrncat-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cf7e2d-m [2018-03-29 20:20:41,057 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-03-29 20:20:41,059 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-03-29 20:20:41,074 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-03-29 20:20:41,103 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf [2018-03-29 20:20:41,127 INFO L110 SettingsManager]: Loading preferences was successful [2018-03-29 20:20:41,127 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-03-29 20:20:41,127 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-03-29 20:20:41,127 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-03-29 20:20:41,128 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-03-29 20:20:41,128 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-03-29 20:20:41,129 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-03-29 20:20:41,129 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-03-29 20:20:41,129 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-03-29 20:20:41,129 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-03-29 20:20:41,129 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-03-29 20:20:41,130 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-03-29 20:20:41,130 INFO L133 SettingsManager]: * sizeof long=4 [2018-03-29 20:20:41,130 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-03-29 20:20:41,130 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-03-29 20:20:41,130 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-03-29 20:20:41,131 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-03-29 20:20:41,131 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-03-29 20:20:41,131 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-03-29 20:20:41,131 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-03-29 20:20:41,131 INFO L133 SettingsManager]: * sizeof long double=12 [2018-03-29 20:20:41,132 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-03-29 20:20:41,132 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-03-29 20:20:41,132 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-03-29 20:20:41,132 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-03-29 20:20:41,132 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-03-29 20:20:41,133 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-03-29 20:20:41,133 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-03-29 20:20:41,133 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-03-29 20:20:41,133 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-03-29 20:20:41,133 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-03-29 20:20:41,133 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:20:41,134 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-03-29 20:20:41,134 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-03-29 20:20:41,135 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-03-29 20:20:41,135 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-03-29 20:20:41,135 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-03-29 20:20:41,169 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-03-29 20:20:41,182 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-03-29 20:20:41,186 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-03-29 20:20:41,188 INFO L271 PluginConnector]: Initializing CDTParser... [2018-03-29 20:20:41,188 INFO L276 PluginConnector]: CDTParser initialized [2018-03-29 20:20:41,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,518 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGa77a71cd1 [2018-03-29 20:20:41,680 INFO L287 CDTParser]: IsIndexed: true [2018-03-29 20:20:41,680 INFO L288 CDTParser]: Found 1 translation units. [2018-03-29 20:20:41,681 INFO L168 CDTParser]: Scanning cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,692 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-03-29 20:20:41,692 INFO L215 ultiparseSymbolTable]: [2018-03-29 20:20:41,693 INFO L218 ultiparseSymbolTable]: Function table: [2018-03-29 20:20:41,693 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____bswap_64 ('__bswap_64') in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,693 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,693 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____bswap_32 ('__bswap_32') in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,693 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__ ('') in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,693 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-03-29 20:20:41,694 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__u_quad_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,694 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____u_char in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,694 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____off64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,694 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__u_int32_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,694 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_key_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,694 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____id_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,694 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__sigset_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,695 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____syscall_ulong_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,695 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____rlim64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,695 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____blksize_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,695 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____uint32_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,695 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__blksize_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,695 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____u_long in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,695 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____qaddr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,696 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__fsblkcnt_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,696 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____int32_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,696 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__ulong in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,696 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__daddr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,696 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__clock_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,696 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____dev_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,696 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__key_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,696 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_rwlockattr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,697 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__mode_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,697 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__u_long in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,697 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____u_short in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,697 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____off_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,697 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____caddr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,697 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__fd_set in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,697 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__size_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,698 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_barrier_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,698 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____intptr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,698 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____u_quad_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,698 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____pid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,698 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____ino_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,698 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_mutexattr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,698 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____quad_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,698 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____fsid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,699 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__u_int in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,699 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_cond_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,699 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__caddr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,699 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____sigset_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,699 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____gid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,699 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_spinlock_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,699 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____mode_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,699 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____timer_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,699 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__off_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,700 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____int16_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,700 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__div_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,700 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__u_char in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,700 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____clockid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,700 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__u_int16_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,700 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__quad_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,700 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____suseconds_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,700 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__blkcnt_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,700 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__lldiv_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,700 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____pthread_list_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,700 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____socklen_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,700 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__uid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,701 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__int16_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,701 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__wchar_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,701 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____rlim_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,701 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____uid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,701 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_attr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,701 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____sig_atomic_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,701 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__ssize_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,701 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____fsblkcnt64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,701 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____fd_mask in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,701 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,702 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__id_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,702 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_condattr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,702 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_once_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,702 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__u_short in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,702 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__gid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,702 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____nlink_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,702 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____clock_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,702 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__u_int8_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,702 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__clockid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,703 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__uint in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,703 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____int8_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,703 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__int32_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,703 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__nlink_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,703 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,703 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__fsfilcnt_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,703 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__timer_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,703 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____ssize_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,703 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____uint64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,703 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____fsword_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,704 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____blkcnt64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,704 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__suseconds_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,704 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__fd_mask in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,704 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____syscall_slong_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,704 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__ushort in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,704 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____ino64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,704 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____loff_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,704 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____time_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,704 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__int8_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,705 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____uint16_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,705 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____blkcnt_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,705 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__fsid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,705 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____fsfilcnt_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,705 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____daddr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,705 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____WAIT_STATUS in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,705 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__int64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,705 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____uint8_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,705 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____key_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,706 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__dev_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,706 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__ldiv_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,706 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__u_int64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,706 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__loff_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,706 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_rwlock_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,706 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____u_int in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,706 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__time_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,706 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__ino_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,707 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_barrierattr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,707 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____fsblkcnt_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,707 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____int64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,707 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____useconds_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,707 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__register_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,707 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_mutex_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,707 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____fsfilcnt64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:41,724 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGa77a71cd1 [2018-03-29 20:20:41,729 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-03-29 20:20:41,732 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-03-29 20:20:41,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-03-29 20:20:41,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-03-29 20:20:41,738 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-03-29 20:20:41,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.03 08:20:41" (1/1) ... [2018-03-29 20:20:41,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dbc0b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:20:41, skipping insertion in model container [2018-03-29 20:20:41,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.03 08:20:41" (1/1) ... [2018-03-29 20:20:41,754 INFO L167 Dispatcher]: Using SV-COMP mode [2018-03-29 20:20:41,784 INFO L167 Dispatcher]: Using SV-COMP mode [2018-03-29 20:20:41,949 INFO L175 PostProcessor]: Settings: Checked method=main [2018-03-29 20:20:42,001 INFO L175 PostProcessor]: Settings: Checked method=main [2018-03-29 20:20:42,008 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 112 non ball SCCs. Number of states in SCCs 112. [2018-03-29 20:20:42,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:20:42 WrapperNode [2018-03-29 20:20:42,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-03-29 20:20:42,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-03-29 20:20:42,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-03-29 20:20:42,056 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-03-29 20:20:42,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:20:42" (1/1) ... [2018-03-29 20:20:42,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:20:42" (1/1) ... [2018-03-29 20:20:42,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:20:42" (1/1) ... [2018-03-29 20:20:42,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:20:42" (1/1) ... [2018-03-29 20:20:42,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:20:42" (1/1) ... [2018-03-29 20:20:42,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:20:42" (1/1) ... [2018-03-29 20:20:42,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:20:42" (1/1) ... [2018-03-29 20:20:42,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-03-29 20:20:42,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-03-29 20:20:42,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-03-29 20:20:42,110 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-03-29 20:20:42,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:20:42" (1/1) ... No working directory specified, using /storage/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 [2018-03-29 20:20:42,244 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-03-29 20:20:42,245 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-03-29 20:20:42,245 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____bswap_32 [2018-03-29 20:20:42,245 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____bswap_64 [2018-03-29 20:20:42,245 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncat [2018-03-29 20:20:42,245 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-03-29 20:20:42,245 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____bswap_32 [2018-03-29 20:20:42,245 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____bswap_64 [2018-03-29 20:20:42,246 INFO L128 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-03-29 20:20:42,246 INFO L128 BoogieDeclarations]: Found specification of procedure atof [2018-03-29 20:20:42,246 INFO L128 BoogieDeclarations]: Found specification of procedure atoi [2018-03-29 20:20:42,246 INFO L128 BoogieDeclarations]: Found specification of procedure atol [2018-03-29 20:20:42,246 INFO L128 BoogieDeclarations]: Found specification of procedure atoll [2018-03-29 20:20:42,246 INFO L128 BoogieDeclarations]: Found specification of procedure strtod [2018-03-29 20:20:42,247 INFO L128 BoogieDeclarations]: Found specification of procedure strtof [2018-03-29 20:20:42,247 INFO L128 BoogieDeclarations]: Found specification of procedure strtold [2018-03-29 20:20:42,247 INFO L128 BoogieDeclarations]: Found specification of procedure strtol [2018-03-29 20:20:42,247 INFO L128 BoogieDeclarations]: Found specification of procedure strtoul [2018-03-29 20:20:42,247 INFO L128 BoogieDeclarations]: Found specification of procedure strtoq [2018-03-29 20:20:42,247 INFO L128 BoogieDeclarations]: Found specification of procedure strtouq [2018-03-29 20:20:42,248 INFO L128 BoogieDeclarations]: Found specification of procedure strtoll [2018-03-29 20:20:42,248 INFO L128 BoogieDeclarations]: Found specification of procedure strtoull [2018-03-29 20:20:42,248 INFO L128 BoogieDeclarations]: Found specification of procedure l64a [2018-03-29 20:20:42,248 INFO L128 BoogieDeclarations]: Found specification of procedure a64l [2018-03-29 20:20:42,248 INFO L128 BoogieDeclarations]: Found specification of procedure select [2018-03-29 20:20:42,248 INFO L128 BoogieDeclarations]: Found specification of procedure pselect [2018-03-29 20:20:42,249 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-03-29 20:20:42,249 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-03-29 20:20:42,249 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-03-29 20:20:42,249 INFO L128 BoogieDeclarations]: Found specification of procedure random [2018-03-29 20:20:42,249 INFO L128 BoogieDeclarations]: Found specification of procedure srandom [2018-03-29 20:20:42,249 INFO L128 BoogieDeclarations]: Found specification of procedure initstate [2018-03-29 20:20:42,249 INFO L128 BoogieDeclarations]: Found specification of procedure setstate [2018-03-29 20:20:42,249 INFO L128 BoogieDeclarations]: Found specification of procedure random_r [2018-03-29 20:20:42,250 INFO L128 BoogieDeclarations]: Found specification of procedure srandom_r [2018-03-29 20:20:42,250 INFO L128 BoogieDeclarations]: Found specification of procedure initstate_r [2018-03-29 20:20:42,250 INFO L128 BoogieDeclarations]: Found specification of procedure setstate_r [2018-03-29 20:20:42,250 INFO L128 BoogieDeclarations]: Found specification of procedure rand [2018-03-29 20:20:42,250 INFO L128 BoogieDeclarations]: Found specification of procedure srand [2018-03-29 20:20:42,250 INFO L128 BoogieDeclarations]: Found specification of procedure rand_r [2018-03-29 20:20:42,250 INFO L128 BoogieDeclarations]: Found specification of procedure drand48 [2018-03-29 20:20:42,250 INFO L128 BoogieDeclarations]: Found specification of procedure erand48 [2018-03-29 20:20:42,250 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48 [2018-03-29 20:20:42,250 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48 [2018-03-29 20:20:42,251 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48 [2018-03-29 20:20:42,251 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48 [2018-03-29 20:20:42,251 INFO L128 BoogieDeclarations]: Found specification of procedure srand48 [2018-03-29 20:20:42,251 INFO L128 BoogieDeclarations]: Found specification of procedure seed48 [2018-03-29 20:20:42,251 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48 [2018-03-29 20:20:42,251 INFO L128 BoogieDeclarations]: Found specification of procedure drand48_r [2018-03-29 20:20:42,251 INFO L128 BoogieDeclarations]: Found specification of procedure erand48_r [2018-03-29 20:20:42,251 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-03-29 20:20:42,251 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-03-29 20:20:42,252 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-03-29 20:20:42,252 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-03-29 20:20:42,252 INFO L128 BoogieDeclarations]: Found specification of procedure srand48_r [2018-03-29 20:20:42,252 INFO L128 BoogieDeclarations]: Found specification of procedure seed48_r [2018-03-29 20:20:42,252 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-03-29 20:20:42,252 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-03-29 20:20:42,252 INFO L128 BoogieDeclarations]: Found specification of procedure calloc [2018-03-29 20:20:42,252 INFO L128 BoogieDeclarations]: Found specification of procedure realloc [2018-03-29 20:20:42,252 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-03-29 20:20:42,252 INFO L128 BoogieDeclarations]: Found specification of procedure cfree [2018-03-29 20:20:42,253 INFO L128 BoogieDeclarations]: Found specification of procedure alloca [2018-03-29 20:20:42,253 INFO L128 BoogieDeclarations]: Found specification of procedure valloc [2018-03-29 20:20:42,253 INFO L128 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-03-29 20:20:42,253 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-03-29 20:20:42,253 INFO L128 BoogieDeclarations]: Found specification of procedure atexit [2018-03-29 20:20:42,253 INFO L128 BoogieDeclarations]: Found specification of procedure on_exit [2018-03-29 20:20:42,253 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-03-29 20:20:42,253 INFO L128 BoogieDeclarations]: Found specification of procedure _Exit [2018-03-29 20:20:42,253 INFO L128 BoogieDeclarations]: Found specification of procedure getenv [2018-03-29 20:20:42,253 INFO L128 BoogieDeclarations]: Found specification of procedure putenv [2018-03-29 20:20:42,253 INFO L128 BoogieDeclarations]: Found specification of procedure setenv [2018-03-29 20:20:42,253 INFO L128 BoogieDeclarations]: Found specification of procedure unsetenv [2018-03-29 20:20:42,253 INFO L128 BoogieDeclarations]: Found specification of procedure clearenv [2018-03-29 20:20:42,254 INFO L128 BoogieDeclarations]: Found specification of procedure mktemp [2018-03-29 20:20:42,254 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemp [2018-03-29 20:20:42,254 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemps [2018-03-29 20:20:42,254 INFO L128 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-03-29 20:20:42,254 INFO L128 BoogieDeclarations]: Found specification of procedure system [2018-03-29 20:20:42,254 INFO L128 BoogieDeclarations]: Found specification of procedure realpath [2018-03-29 20:20:42,254 INFO L128 BoogieDeclarations]: Found specification of procedure bsearch [2018-03-29 20:20:42,254 INFO L128 BoogieDeclarations]: Found specification of procedure qsort [2018-03-29 20:20:42,254 INFO L128 BoogieDeclarations]: Found specification of procedure abs [2018-03-29 20:20:42,254 INFO L128 BoogieDeclarations]: Found specification of procedure labs [2018-03-29 20:20:42,254 INFO L128 BoogieDeclarations]: Found specification of procedure llabs [2018-03-29 20:20:42,255 INFO L128 BoogieDeclarations]: Found specification of procedure div [2018-03-29 20:20:42,255 INFO L128 BoogieDeclarations]: Found specification of procedure ldiv [2018-03-29 20:20:42,255 INFO L128 BoogieDeclarations]: Found specification of procedure lldiv [2018-03-29 20:20:42,255 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt [2018-03-29 20:20:42,255 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt [2018-03-29 20:20:42,255 INFO L128 BoogieDeclarations]: Found specification of procedure gcvt [2018-03-29 20:20:42,255 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt [2018-03-29 20:20:42,256 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt [2018-03-29 20:20:42,256 INFO L128 BoogieDeclarations]: Found specification of procedure qgcvt [2018-03-29 20:20:42,256 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-03-29 20:20:42,256 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-03-29 20:20:42,256 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-03-29 20:20:42,256 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-03-29 20:20:42,256 INFO L128 BoogieDeclarations]: Found specification of procedure mblen [2018-03-29 20:20:42,256 INFO L128 BoogieDeclarations]: Found specification of procedure mbtowc [2018-03-29 20:20:42,257 INFO L128 BoogieDeclarations]: Found specification of procedure wctomb [2018-03-29 20:20:42,257 INFO L128 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-03-29 20:20:42,257 INFO L128 BoogieDeclarations]: Found specification of procedure wcstombs [2018-03-29 20:20:42,257 INFO L128 BoogieDeclarations]: Found specification of procedure rpmatch [2018-03-29 20:20:42,257 INFO L128 BoogieDeclarations]: Found specification of procedure getsubopt [2018-03-29 20:20:42,257 INFO L128 BoogieDeclarations]: Found specification of procedure getloadavg [2018-03-29 20:20:42,257 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-03-29 20:20:42,257 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncat [2018-03-29 20:20:42,257 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-03-29 20:20:42,257 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-03-29 20:20:42,257 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-03-29 20:20:42,258 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-03-29 20:20:42,258 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-03-29 20:20:42,258 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-03-29 20:20:42,258 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-03-29 20:20:42,258 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-03-29 20:20:42,676 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-03-29 20:20:42,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.03 08:20:42 BoogieIcfgContainer [2018-03-29 20:20:42,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-03-29 20:20:42,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-03-29 20:20:42,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-03-29 20:20:42,680 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-03-29 20:20:42,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.03 08:20:41" (1/3) ... [2018-03-29 20:20:42,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3518189a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.03 08:20:42, skipping insertion in model container [2018-03-29 20:20:42,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:20:42" (2/3) ... [2018-03-29 20:20:42,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3518189a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.03 08:20:42, skipping insertion in model container [2018-03-29 20:20:42,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.03 08:20:42" (3/3) ... [2018-03-29 20:20:42,683 INFO L107 eAbstractionObserver]: Analyzing ICFG cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-03-29 20:20:42,691 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-03-29 20:20:42,697 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-03-29 20:20:42,737 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-03-29 20:20:42,737 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-03-29 20:20:42,737 INFO L370 AbstractCegarLoop]: Hoare is true [2018-03-29 20:20:42,738 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-03-29 20:20:42,738 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-03-29 20:20:42,738 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-03-29 20:20:42,738 INFO L374 AbstractCegarLoop]: Difference is false [2018-03-29 20:20:42,738 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-03-29 20:20:42,738 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-03-29 20:20:42,738 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-03-29 20:20:42,755 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2018-03-29 20:20:42,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-03-29 20:20:42,761 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:20:42,762 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] [2018-03-29 20:20:42,762 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:20:42,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1326053013, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:20:42,779 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:20:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:20:42,815 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:20:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:42,840 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:20:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:42,875 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:20:42,876 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-03-29 20:20:42,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-03-29 20:20:42,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-03-29 20:20:42,887 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-03-29 20:20:42,889 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 3 states. [2018-03-29 20:20:43,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:20:43,020 INFO L93 Difference]: Finished difference Result 145 states and 158 transitions. [2018-03-29 20:20:43,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-03-29 20:20:43,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-03-29 20:20:43,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:20:43,034 INFO L225 Difference]: With dead ends: 145 [2018-03-29 20:20:43,034 INFO L226 Difference]: Without dead ends: 92 [2018-03-29 20:20:43,038 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-03-29 20:20:43,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-03-29 20:20:43,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-03-29 20:20:43,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-03-29 20:20:43,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2018-03-29 20:20:43,084 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 21 [2018-03-29 20:20:43,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:20:43,085 INFO L459 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2018-03-29 20:20:43,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-03-29 20:20:43,085 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2018-03-29 20:20:43,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-03-29 20:20:43,086 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:20:43,086 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:20:43,086 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:20:43,086 INFO L82 PathProgramCache]: Analyzing trace with hash 722601381, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:20:43,097 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:20:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:20:43,119 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:20:43,152 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 [2018-03-29 20:20:43,155 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:43,160 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:20:43,160 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-03-29 20:20:43,182 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-03-29 20:20:43,183 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:43,194 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. [2018-03-29 20:20:43,194 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2018-03-29 20:20:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:43,207 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:20:43,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:43,244 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:20:43,245 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-03-29 20:20:43,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-03-29 20:20:43,247 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-03-29 20:20:43,247 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-03-29 20:20:43,247 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand 4 states. [2018-03-29 20:20:43,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:20:43,345 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2018-03-29 20:20:43,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-03-29 20:20:43,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-03-29 20:20:43,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:20:43,347 INFO L225 Difference]: With dead ends: 92 [2018-03-29 20:20:43,348 INFO L226 Difference]: Without dead ends: 91 [2018-03-29 20:20:43,349 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-03-29 20:20:43,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-03-29 20:20:43,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-03-29 20:20:43,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-03-29 20:20:43,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2018-03-29 20:20:43,359 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 24 [2018-03-29 20:20:43,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:20:43,360 INFO L459 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2018-03-29 20:20:43,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-03-29 20:20:43,360 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2018-03-29 20:20:43,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-03-29 20:20:43,361 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:20:43,361 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:20:43,361 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:20:43,361 INFO L82 PathProgramCache]: Analyzing trace with hash 722601382, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:20:43,371 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:20:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:20:43,392 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:20:43,457 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 [2018-03-29 20:20:43,458 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:43,472 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 [2018-03-29 20:20:43,473 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:43,485 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:20:43,486 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:25 [2018-03-29 20:20:43,554 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:20:43,565 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:20:43,567 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 21 [2018-03-29 20:20:43,568 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:43,594 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:20:43,595 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:20:43,596 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 [2018-03-29 20:20:43,596 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:43,625 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-03-29 20:20:43,626 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:36, output treesize:24 [2018-03-29 20:20:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:43,674 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:20:43,847 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 23 treesize of output 17 [2018-03-29 20:20:43,847 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:43,865 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 17 treesize of output 20 [2018-03-29 20:20:43,902 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 14 treesize of output 3 [2018-03-29 20:20:43,902 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:43,906 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:20:43,913 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-03-29 20:20:43,913 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:29, output treesize:9 [2018-03-29 20:20:43,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:44,006 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:20:44,006 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2018-03-29 20:20:44,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-03-29 20:20:44,007 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-03-29 20:20:44,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-03-29 20:20:44,007 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand 13 states. [2018-03-29 20:20:44,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:20:44,310 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2018-03-29 20:20:44,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-03-29 20:20:44,312 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-03-29 20:20:44,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:20:44,314 INFO L225 Difference]: With dead ends: 91 [2018-03-29 20:20:44,314 INFO L226 Difference]: Without dead ends: 90 [2018-03-29 20:20:44,315 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-03-29 20:20:44,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-03-29 20:20:44,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-03-29 20:20:44,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-03-29 20:20:44,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2018-03-29 20:20:44,324 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 24 [2018-03-29 20:20:44,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:20:44,324 INFO L459 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2018-03-29 20:20:44,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-03-29 20:20:44,325 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2018-03-29 20:20:44,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-03-29 20:20:44,326 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:20:44,326 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] [2018-03-29 20:20:44,326 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:20:44,326 INFO L82 PathProgramCache]: Analyzing trace with hash 925806431, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:20:44,341 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:20:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:20:44,356 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:20:44,364 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 [2018-03-29 20:20:44,365 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:44,378 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:20:44,379 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-03-29 20:20:44,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:44,442 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:20:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:44,475 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:20:44,475 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-03-29 20:20:44,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-03-29 20:20:44,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-03-29 20:20:44,476 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-03-29 20:20:44,476 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand 4 states. [2018-03-29 20:20:44,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:20:44,621 INFO L93 Difference]: Finished difference Result 90 states and 96 transitions. [2018-03-29 20:20:44,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-03-29 20:20:44,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-03-29 20:20:44,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:20:44,623 INFO L225 Difference]: With dead ends: 90 [2018-03-29 20:20:44,623 INFO L226 Difference]: Without dead ends: 89 [2018-03-29 20:20:44,623 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-03-29 20:20:44,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-03-29 20:20:44,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-03-29 20:20:44,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-03-29 20:20:44,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2018-03-29 20:20:44,632 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 25 [2018-03-29 20:20:44,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:20:44,632 INFO L459 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2018-03-29 20:20:44,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-03-29 20:20:44,632 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2018-03-29 20:20:44,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-03-29 20:20:44,633 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:20:44,633 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] [2018-03-29 20:20:44,633 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:20:44,634 INFO L82 PathProgramCache]: Analyzing trace with hash 925806432, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:20:44,639 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:20:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:20:44,651 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:20:44,657 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 [2018-03-29 20:20:44,657 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:44,661 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:20:44,661 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-03-29 20:20:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:44,673 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:20:44,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:44,711 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:20:44,712 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2018-03-29 20:20:44,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-03-29 20:20:44,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-03-29 20:20:44,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-03-29 20:20:44,712 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand 7 states. [2018-03-29 20:20:44,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:20:44,802 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2018-03-29 20:20:44,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-03-29 20:20:44,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-03-29 20:20:44,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:20:44,804 INFO L225 Difference]: With dead ends: 89 [2018-03-29 20:20:44,804 INFO L226 Difference]: Without dead ends: 88 [2018-03-29 20:20:44,804 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-03-29 20:20:44,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-03-29 20:20:44,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-03-29 20:20:44,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-03-29 20:20:44,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2018-03-29 20:20:44,815 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 25 [2018-03-29 20:20:44,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:20:44,815 INFO L459 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2018-03-29 20:20:44,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-03-29 20:20:44,815 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2018-03-29 20:20:44,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-03-29 20:20:44,816 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:20:44,817 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:20:44,817 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:20:44,817 INFO L82 PathProgramCache]: Analyzing trace with hash -506179908, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:20:44,827 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:20:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:20:44,850 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:20:44,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:44,871 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:20:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:44,899 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:20:44,899 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2018-03-29 20:20:44,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-03-29 20:20:44,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-03-29 20:20:44,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-03-29 20:20:44,900 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand 6 states. [2018-03-29 20:20:45,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:20:45,006 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2018-03-29 20:20:45,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-03-29 20:20:45,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2018-03-29 20:20:45,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:20:45,008 INFO L225 Difference]: With dead ends: 118 [2018-03-29 20:20:45,008 INFO L226 Difference]: Without dead ends: 114 [2018-03-29 20:20:45,008 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-03-29 20:20:45,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-03-29 20:20:45,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 101. [2018-03-29 20:20:45,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-03-29 20:20:45,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 114 transitions. [2018-03-29 20:20:45,018 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 114 transitions. Word has length 32 [2018-03-29 20:20:45,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:20:45,018 INFO L459 AbstractCegarLoop]: Abstraction has 101 states and 114 transitions. [2018-03-29 20:20:45,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-03-29 20:20:45,019 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 114 transitions. [2018-03-29 20:20:45,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-03-29 20:20:45,020 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:20:45,020 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] [2018-03-29 20:20:45,020 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:20:45,020 INFO L82 PathProgramCache]: Analyzing trace with hash -506179907, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:20:45,029 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:20:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:20:45,051 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:20:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:45,116 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:20:45,126 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-03-29 20:20:45,126 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:45,133 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2018-03-29 20:20:45,134 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:45,142 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-03-29 20:20:45,142 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:7 [2018-03-29 20:20:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:45,178 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:20:45,178 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2018-03-29 20:20:45,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-03-29 20:20:45,179 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-03-29 20:20:45,179 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-03-29 20:20:45,179 INFO L87 Difference]: Start difference. First operand 101 states and 114 transitions. Second operand 10 states. [2018-03-29 20:20:45,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:20:45,317 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2018-03-29 20:20:45,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-03-29 20:20:45,317 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2018-03-29 20:20:45,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:20:45,318 INFO L225 Difference]: With dead ends: 114 [2018-03-29 20:20:45,318 INFO L226 Difference]: Without dead ends: 110 [2018-03-29 20:20:45,318 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-03-29 20:20:45,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-03-29 20:20:45,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 100. [2018-03-29 20:20:45,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-03-29 20:20:45,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2018-03-29 20:20:45,325 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 32 [2018-03-29 20:20:45,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:20:45,325 INFO L459 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2018-03-29 20:20:45,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-03-29 20:20:45,326 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2018-03-29 20:20:45,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-03-29 20:20:45,327 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:20:45,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:20:45,327 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:20:45,327 INFO L82 PathProgramCache]: Analyzing trace with hash -963804542, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:20:45,334 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:20:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:20:45,357 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:20:45,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-03-29 20:20:45,389 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:20:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-03-29 20:20:45,416 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:20:45,416 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2018-03-29 20:20:45,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-03-29 20:20:45,417 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-03-29 20:20:45,417 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-03-29 20:20:45,417 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 7 states. [2018-03-29 20:20:45,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:20:45,509 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2018-03-29 20:20:45,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-03-29 20:20:45,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-03-29 20:20:45,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:20:45,510 INFO L225 Difference]: With dead ends: 110 [2018-03-29 20:20:45,510 INFO L226 Difference]: Without dead ends: 109 [2018-03-29 20:20:45,511 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-03-29 20:20:45,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-03-29 20:20:45,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2018-03-29 20:20:45,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-03-29 20:20:45,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2018-03-29 20:20:45,516 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 39 [2018-03-29 20:20:45,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:20:45,516 INFO L459 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2018-03-29 20:20:45,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-03-29 20:20:45,516 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2018-03-29 20:20:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-03-29 20:20:45,518 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:20:45,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:20:45,518 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:20:45,518 INFO L82 PathProgramCache]: Analyzing trace with hash -963804541, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:20:45,528 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:20:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:20:45,546 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:20:45,560 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 [2018-03-29 20:20:45,560 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:45,567 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 [2018-03-29 20:20:45,567 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:45,574 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:20:45,574 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2018-03-29 20:20:45,600 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:20:45,601 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:20:45,601 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 [2018-03-29 20:20:45,601 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:45,608 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:20:45,609 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 23 [2018-03-29 20:20:45,610 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:45,616 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:20:45,617 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:18 [2018-03-29 20:20:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:45,780 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:20:46,003 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 10 treesize of output 3 [2018-03-29 20:20:46,003 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:46,007 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 11 treesize of output 15 [2018-03-29 20:20:46,023 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 3 [2018-03-29 20:20:46,024 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:46,025 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-03-29 20:20:46,025 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:46,028 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:20:46,031 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:20:46,031 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:21, output treesize:3 [2018-03-29 20:20:46,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:46,096 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:20:46,096 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2018-03-29 20:20:46,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-03-29 20:20:46,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-03-29 20:20:46,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2018-03-29 20:20:46,097 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand 24 states. [2018-03-29 20:20:46,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:20:46,812 INFO L93 Difference]: Finished difference Result 183 states and 199 transitions. [2018-03-29 20:20:46,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-03-29 20:20:46,813 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 39 [2018-03-29 20:20:46,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:20:46,816 INFO L225 Difference]: With dead ends: 183 [2018-03-29 20:20:46,816 INFO L226 Difference]: Without dead ends: 182 [2018-03-29 20:20:46,817 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=197, Invalid=1063, Unknown=0, NotChecked=0, Total=1260 [2018-03-29 20:20:46,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-03-29 20:20:46,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 106. [2018-03-29 20:20:46,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-03-29 20:20:46,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2018-03-29 20:20:46,825 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 39 [2018-03-29 20:20:46,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:20:46,826 INFO L459 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2018-03-29 20:20:46,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-03-29 20:20:46,826 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2018-03-29 20:20:46,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-03-29 20:20:46,827 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:20:46,827 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:20:46,827 INFO L408 AbstractCegarLoop]: === Iteration 10 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:20:46,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1123521185, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:20:46,846 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:20:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:20:46,864 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:20:46,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:46,921 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:20:46,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:46,946 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:20:46,946 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2018-03-29 20:20:46,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-03-29 20:20:46,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-03-29 20:20:46,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-03-29 20:20:46,947 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand 6 states. [2018-03-29 20:20:47,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:20:47,008 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2018-03-29 20:20:47,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-03-29 20:20:47,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2018-03-29 20:20:47,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:20:47,009 INFO L225 Difference]: With dead ends: 111 [2018-03-29 20:20:47,009 INFO L226 Difference]: Without dead ends: 110 [2018-03-29 20:20:47,009 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-03-29 20:20:47,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-03-29 20:20:47,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 105. [2018-03-29 20:20:47,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-03-29 20:20:47,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2018-03-29 20:20:47,016 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 40 [2018-03-29 20:20:47,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:20:47,017 INFO L459 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2018-03-29 20:20:47,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-03-29 20:20:47,017 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2018-03-29 20:20:47,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-03-29 20:20:47,018 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:20:47,018 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:20:47,018 INFO L408 AbstractCegarLoop]: === Iteration 11 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:20:47,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1123521186, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:20:47,033 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:20:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:20:47,058 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:20:47,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:47,142 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:20:47,150 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2018-03-29 20:20:47,151 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:47,182 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2018-03-29 20:20:47,183 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:47,185 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-03-29 20:20:47,185 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2018-03-29 20:20:47,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:47,226 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:20:47,227 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2018-03-29 20:20:47,227 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-03-29 20:20:47,227 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-03-29 20:20:47,227 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-03-29 20:20:47,227 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand 9 states. [2018-03-29 20:20:47,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:20:47,381 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2018-03-29 20:20:47,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-03-29 20:20:47,381 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2018-03-29 20:20:47,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:20:47,382 INFO L225 Difference]: With dead ends: 142 [2018-03-29 20:20:47,382 INFO L226 Difference]: Without dead ends: 141 [2018-03-29 20:20:47,382 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-03-29 20:20:47,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-03-29 20:20:47,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 122. [2018-03-29 20:20:47,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-03-29 20:20:47,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 134 transitions. [2018-03-29 20:20:47,387 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 134 transitions. Word has length 40 [2018-03-29 20:20:47,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:20:47,388 INFO L459 AbstractCegarLoop]: Abstraction has 122 states and 134 transitions. [2018-03-29 20:20:47,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-03-29 20:20:47,388 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 134 transitions. [2018-03-29 20:20:47,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-03-29 20:20:47,389 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:20:47,389 INFO L355 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:20:47,389 INFO L408 AbstractCegarLoop]: === Iteration 12 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:20:47,389 INFO L82 PathProgramCache]: Analyzing trace with hash 63808509, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:20:47,397 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:20:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:20:47,415 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:20:47,423 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 [2018-03-29 20:20:47,424 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:47,427 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:20:47,428 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2018-03-29 20:20:47,442 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:20:47,442 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:20:47,443 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 [2018-03-29 20:20:47,443 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:47,446 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:20:47,447 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:13 [2018-03-29 20:20:47,465 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 17 treesize of output 14 [2018-03-29 20:20:47,467 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 14 treesize of output 13 [2018-03-29 20:20:47,468 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:47,470 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:20:47,480 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. [2018-03-29 20:20:47,480 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:39, output treesize:35 [2018-03-29 20:20:47,501 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 [2018-03-29 20:20:47,503 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-03-29 20:20:47,504 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:47,508 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:20:47,515 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2018-03-29 20:20:47,516 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:49, output treesize:45 [2018-03-29 20:20:47,752 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 41 treesize of output 37 [2018-03-29 20:20:47,754 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2018-03-29 20:20:47,755 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:47,764 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:20:47,769 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 37 [2018-03-29 20:20:47,770 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-03-29 20:20:47,784 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-03-29 20:20:47,817 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-03-29 20:20:47,818 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:70, output treesize:43 [2018-03-29 20:20:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:47,938 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:20:48,389 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-03-29 20:20:48,390 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:48,400 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 35 treesize of output 31 [2018-03-29 20:20:48,420 INFO L682 Elim1Store]: detected equality via solver [2018-03-29 20:20:48,422 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-03-29 20:20:48,423 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-03-29 20:20:48,428 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:20:48,449 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:20:48,449 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:58, output treesize:14 [2018-03-29 20:20:48,546 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:20:48,568 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:20:48,568 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 34 [2018-03-29 20:20:48,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-03-29 20:20:48,569 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-03-29 20:20:48,569 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1064, Unknown=0, NotChecked=0, Total=1190 [2018-03-29 20:20:48,569 INFO L87 Difference]: Start difference. First operand 122 states and 134 transitions. Second operand 35 states. [2018-03-29 20:20:52,917 WARN L151 SmtUtils]: Spent 511ms on a formula simplification. DAG size of input: 83 DAG size of output 69 [2018-03-29 20:20:56,548 WARN L151 SmtUtils]: Spent 1413ms on a formula simplification. DAG size of input: 77 DAG size of output 69 [2018-03-29 20:20:58,986 WARN L151 SmtUtils]: Spent 2373ms on a formula simplification. DAG size of input: 97 DAG size of output 87 [2018-03-29 20:21:04,930 WARN L151 SmtUtils]: Spent 659ms on a formula simplification. DAG size of input: 84 DAG size of output 70 [2018-03-29 20:21:10,675 WARN L151 SmtUtils]: Spent 3614ms on a formula simplification. DAG size of input: 82 DAG size of output 73 [2018-03-29 20:21:13,491 WARN L151 SmtUtils]: Spent 641ms on a formula simplification. DAG size of input: 80 DAG size of output 70 [2018-03-29 20:21:15,622 WARN L151 SmtUtils]: Spent 2053ms on a formula simplification. DAG size of input: 100 DAG size of output 87 [2018-03-29 20:21:19,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:21:19,048 INFO L93 Difference]: Finished difference Result 260 states and 282 transitions. [2018-03-29 20:21:19,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-03-29 20:21:19,073 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 46 [2018-03-29 20:21:19,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:21:19,076 INFO L225 Difference]: With dead ends: 260 [2018-03-29 20:21:19,076 INFO L226 Difference]: Without dead ends: 259 [2018-03-29 20:21:19,077 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=694, Invalid=3594, Unknown=2, NotChecked=0, Total=4290 [2018-03-29 20:21:19,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-03-29 20:21:19,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 112. [2018-03-29 20:21:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-03-29 20:21:19,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2018-03-29 20:21:19,084 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 46 [2018-03-29 20:21:19,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:21:19,084 INFO L459 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2018-03-29 20:21:19,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-03-29 20:21:19,085 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2018-03-29 20:21:19,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-03-29 20:21:19,085 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:21:19,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:21:19,086 INFO L408 AbstractCegarLoop]: === Iteration 13 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:21:19,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1465279656, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:21:19,091 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:21:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:21:19,118 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:21:19,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:19,146 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:21:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:19,239 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:21:19,240 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2018-03-29 20:21:19,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-03-29 20:21:19,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-03-29 20:21:19,240 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-03-29 20:21:19,241 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand 7 states. [2018-03-29 20:21:19,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:21:19,280 INFO L93 Difference]: Finished difference Result 193 states and 210 transitions. [2018-03-29 20:21:19,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-03-29 20:21:19,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2018-03-29 20:21:19,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:21:19,281 INFO L225 Difference]: With dead ends: 193 [2018-03-29 20:21:19,281 INFO L226 Difference]: Without dead ends: 163 [2018-03-29 20:21:19,282 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-03-29 20:21:19,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-03-29 20:21:19,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 135. [2018-03-29 20:21:19,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-03-29 20:21:19,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 151 transitions. [2018-03-29 20:21:19,290 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 151 transitions. Word has length 54 [2018-03-29 20:21:19,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:21:19,290 INFO L459 AbstractCegarLoop]: Abstraction has 135 states and 151 transitions. [2018-03-29 20:21:19,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-03-29 20:21:19,291 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 151 transitions. [2018-03-29 20:21:19,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-03-29 20:21:19,291 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:21:19,292 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, 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] [2018-03-29 20:21:19,292 INFO L408 AbstractCegarLoop]: === Iteration 14 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:21:19,292 INFO L82 PathProgramCache]: Analyzing trace with hash 834800017, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:21:19,300 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:21:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:21:19,318 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:21:19,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:19,324 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:21:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:19,371 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:21:19,371 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-03-29 20:21:19,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-03-29 20:21:19,372 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-03-29 20:21:19,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-03-29 20:21:19,372 INFO L87 Difference]: Start difference. First operand 135 states and 151 transitions. Second operand 3 states. [2018-03-29 20:21:19,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:21:19,388 INFO L93 Difference]: Finished difference Result 182 states and 201 transitions. [2018-03-29 20:21:19,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-03-29 20:21:19,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2018-03-29 20:21:19,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:21:19,389 INFO L225 Difference]: With dead ends: 182 [2018-03-29 20:21:19,389 INFO L226 Difference]: Without dead ends: 95 [2018-03-29 20:21:19,390 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-03-29 20:21:19,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-03-29 20:21:19,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-03-29 20:21:19,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-03-29 20:21:19,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2018-03-29 20:21:19,394 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 54 [2018-03-29 20:21:19,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:21:19,395 INFO L459 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2018-03-29 20:21:19,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-03-29 20:21:19,395 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2018-03-29 20:21:19,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-03-29 20:21:19,395 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:21:19,395 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2018-03-29 20:21:19,395 INFO L408 AbstractCegarLoop]: === Iteration 15 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:21:19,396 INFO L82 PathProgramCache]: Analyzing trace with hash -269889426, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:21:19,402 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:21:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:21:19,421 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:21:19,464 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-03-29 20:21:19,479 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-03-29 20:21:19,480 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:19,484 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:19,488 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. [2018-03-29 20:21:19,489 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2018-03-29 20:21:19,548 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 20 treesize of output 16 [2018-03-29 20:21:19,553 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 16 treesize of output 13 [2018-03-29 20:21:19,554 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-03-29 20:21:19,557 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-03-29 20:21:19,566 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-03-29 20:21:19,566 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:29 [2018-03-29 20:21:19,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:19,643 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:21:19,852 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2018-03-29 20:21:19,852 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:19,858 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 13 treesize of output 11 [2018-03-29 20:21:19,866 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2018-03-29 20:21:19,866 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:19,867 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:19,872 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:19,872 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:35, output treesize:7 [2018-03-29 20:21:19,880 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:19,901 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:21:19,901 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-03-29 20:21:19,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-03-29 20:21:19,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-03-29 20:21:19,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2018-03-29 20:21:19,902 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand 21 states. [2018-03-29 20:21:22,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:21:22,831 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2018-03-29 20:21:22,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-03-29 20:21:22,831 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2018-03-29 20:21:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:21:22,832 INFO L225 Difference]: With dead ends: 139 [2018-03-29 20:21:22,833 INFO L226 Difference]: Without dead ends: 138 [2018-03-29 20:21:22,833 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2018-03-29 20:21:22,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-03-29 20:21:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 112. [2018-03-29 20:21:22,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-03-29 20:21:22,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 120 transitions. [2018-03-29 20:21:22,841 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 120 transitions. Word has length 58 [2018-03-29 20:21:22,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:21:22,841 INFO L459 AbstractCegarLoop]: Abstraction has 112 states and 120 transitions. [2018-03-29 20:21:22,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-03-29 20:21:22,842 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 120 transitions. [2018-03-29 20:21:22,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-03-29 20:21:22,842 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:21:22,842 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, 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] [2018-03-29 20:21:22,842 INFO L408 AbstractCegarLoop]: === Iteration 16 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:21:22,843 INFO L82 PathProgramCache]: Analyzing trace with hash 853842009, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:21:22,855 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:21:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:21:22,877 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:21:22,903 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:22,904 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2018-03-29 20:21:22,907 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:22,907 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 [2018-03-29 20:21:22,908 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:22,912 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:22,916 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. [2018-03-29 20:21:22,916 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-03-29 20:21:22,970 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc13.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc13.base| 1))) (and (= (select .cse0 |c_main_#t~malloc14.base|) 0) (= 0 (select |c_old(#valid)| |main_#t~malloc13.base|)) (= |c_#valid| (store (store .cse0 |c_main_#t~malloc14.base| 1) |main_#t~malloc13.base| 0))))) is different from true [2018-03-29 20:21:22,975 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc13.base| Int) (|main_#t~malloc14.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc13.base| 1))) (and (= (select .cse0 |main_#t~malloc14.base|) 0) (= 0 (select |c_old(#valid)| |main_#t~malloc13.base|)) (= |c_#valid| (store (store (store .cse0 |main_#t~malloc14.base| 1) |main_#t~malloc13.base| 0) |main_#t~malloc14.base| 0))))) is different from true [2018-03-29 20:21:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:22,984 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:21:23,008 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc14.base_17| Int)) (or (not (= (select |c_#valid| |v_main_#t~malloc14.base_17|) 0)) (= |c_old(#valid)| (store (store (store |c_#valid| |v_main_#t~malloc14.base_17| 1) |c_main_#t~malloc13.base| 0) |v_main_#t~malloc14.base_17| 0)))) is different from false [2018-03-29 20:21:23,013 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc13.base_16| Int) (|v_main_#t~malloc14.base_17| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc13.base_16| 1))) (or (= |c_old(#valid)| (store (store (store .cse0 |v_main_#t~malloc14.base_17| 1) |v_main_#t~malloc13.base_16| 0) |v_main_#t~malloc14.base_17| 0)) (not (= 0 (select |c_#valid| |v_main_#t~malloc13.base_16|))) (not (= (select .cse0 |v_main_#t~malloc14.base_17|) 0))))) is different from false [2018-03-29 20:21:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:23,060 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:21:23,061 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-03-29 20:21:23,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-03-29 20:21:23,061 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-03-29 20:21:23,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-03-29 20:21:23,062 INFO L87 Difference]: Start difference. First operand 112 states and 120 transitions. Second operand 12 states. [2018-03-29 20:21:23,074 WARN L1011 $PredicateComparison]: unable to prove that (and (= |c_#valid| |c_old(#valid)|) (forall ((|v_main_#t~malloc13.base_16| Int) (|v_main_#t~malloc14.base_17| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc13.base_16| 1))) (or (= |c_old(#valid)| (store (store (store .cse0 |v_main_#t~malloc14.base_17| 1) |v_main_#t~malloc13.base_16| 0) |v_main_#t~malloc14.base_17| 0)) (not (= 0 (select |c_#valid| |v_main_#t~malloc13.base_16|))) (not (= (select .cse0 |v_main_#t~malloc14.base_17|) 0)))))) is different from false [2018-03-29 20:21:23,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:21:23,438 INFO L93 Difference]: Finished difference Result 205 states and 220 transitions. [2018-03-29 20:21:23,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-03-29 20:21:23,438 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2018-03-29 20:21:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:21:23,440 INFO L225 Difference]: With dead ends: 205 [2018-03-29 20:21:23,440 INFO L226 Difference]: Without dead ends: 186 [2018-03-29 20:21:23,441 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-03-29 20:21:23,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-03-29 20:21:23,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2018-03-29 20:21:23,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-03-29 20:21:23,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 198 transitions. [2018-03-29 20:21:23,455 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 198 transitions. Word has length 59 [2018-03-29 20:21:23,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:21:23,455 INFO L459 AbstractCegarLoop]: Abstraction has 181 states and 198 transitions. [2018-03-29 20:21:23,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-03-29 20:21:23,455 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 198 transitions. [2018-03-29 20:21:23,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-03-29 20:21:23,456 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:21:23,456 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:21:23,456 INFO L408 AbstractCegarLoop]: === Iteration 17 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:21:23,456 INFO L82 PathProgramCache]: Analyzing trace with hash 223362370, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:21:23,467 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:21:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:21:23,496 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:21:23,526 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-03-29 20:21:23,527 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:21:23,536 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-03-29 20:21:23,559 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:21:23,560 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2018-03-29 20:21:23,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-03-29 20:21:23,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-03-29 20:21:23,560 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-03-29 20:21:23,561 INFO L87 Difference]: Start difference. First operand 181 states and 198 transitions. Second operand 7 states. [2018-03-29 20:21:23,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:21:23,685 INFO L93 Difference]: Finished difference Result 185 states and 202 transitions. [2018-03-29 20:21:23,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-03-29 20:21:23,686 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2018-03-29 20:21:23,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:21:23,687 INFO L225 Difference]: With dead ends: 185 [2018-03-29 20:21:23,687 INFO L226 Difference]: Without dead ends: 183 [2018-03-29 20:21:23,687 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-03-29 20:21:23,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-03-29 20:21:23,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-03-29 20:21:23,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-03-29 20:21:23,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 194 transitions. [2018-03-29 20:21:23,696 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 194 transitions. Word has length 59 [2018-03-29 20:21:23,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:21:23,697 INFO L459 AbstractCegarLoop]: Abstraction has 179 states and 194 transitions. [2018-03-29 20:21:23,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-03-29 20:21:23,697 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 194 transitions. [2018-03-29 20:21:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-03-29 20:21:23,697 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:21:23,697 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:21:23,697 INFO L408 AbstractCegarLoop]: === Iteration 18 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:21:23,698 INFO L82 PathProgramCache]: Analyzing trace with hash 223362371, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:21:23,708 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:21:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:21:23,727 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:21:23,733 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 [2018-03-29 20:21:23,733 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:23,736 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:23,736 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:7 [2018-03-29 20:21:23,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:23,904 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:21:24,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:24,325 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:21:24,325 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2018-03-29 20:21:24,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-03-29 20:21:24,326 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-03-29 20:21:24,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2018-03-29 20:21:24,327 INFO L87 Difference]: Start difference. First operand 179 states and 194 transitions. Second operand 34 states. [2018-03-29 20:21:25,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:21:25,778 INFO L93 Difference]: Finished difference Result 335 states and 366 transitions. [2018-03-29 20:21:25,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-03-29 20:21:25,778 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 59 [2018-03-29 20:21:25,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:21:25,780 INFO L225 Difference]: With dead ends: 335 [2018-03-29 20:21:25,780 INFO L226 Difference]: Without dead ends: 334 [2018-03-29 20:21:25,782 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=523, Invalid=3259, Unknown=0, NotChecked=0, Total=3782 [2018-03-29 20:21:25,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-03-29 20:21:25,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 273. [2018-03-29 20:21:25,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-03-29 20:21:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 298 transitions. [2018-03-29 20:21:25,799 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 298 transitions. Word has length 59 [2018-03-29 20:21:25,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:21:25,799 INFO L459 AbstractCegarLoop]: Abstraction has 273 states and 298 transitions. [2018-03-29 20:21:25,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-03-29 20:21:25,799 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 298 transitions. [2018-03-29 20:21:25,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-03-29 20:21:25,801 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:21:25,801 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, 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] [2018-03-29 20:21:25,801 INFO L408 AbstractCegarLoop]: === Iteration 19 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:21:25,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1771820582, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:21:25,812 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:21:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:21:25,833 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:21:25,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:25,865 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:21:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:25,916 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:21:25,917 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-03-29 20:21:25,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-03-29 20:21:25,917 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-03-29 20:21:25,917 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-03-29 20:21:25,918 INFO L87 Difference]: Start difference. First operand 273 states and 298 transitions. Second operand 7 states. [2018-03-29 20:21:25,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:21:25,958 INFO L93 Difference]: Finished difference Result 412 states and 449 transitions. [2018-03-29 20:21:25,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-03-29 20:21:25,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2018-03-29 20:21:25,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:21:25,960 INFO L225 Difference]: With dead ends: 412 [2018-03-29 20:21:25,960 INFO L226 Difference]: Without dead ends: 271 [2018-03-29 20:21:25,961 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-03-29 20:21:25,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-03-29 20:21:25,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-03-29 20:21:25,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-03-29 20:21:25,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 294 transitions. [2018-03-29 20:21:25,976 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 294 transitions. Word has length 60 [2018-03-29 20:21:25,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:21:25,976 INFO L459 AbstractCegarLoop]: Abstraction has 271 states and 294 transitions. [2018-03-29 20:21:25,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-03-29 20:21:25,977 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 294 transitions. [2018-03-29 20:21:25,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-03-29 20:21:25,978 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:21:25,978 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, 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] [2018-03-29 20:21:25,978 INFO L408 AbstractCegarLoop]: === Iteration 20 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:21:25,978 INFO L82 PathProgramCache]: Analyzing trace with hash 8763489, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:21:25,990 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:21:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:21:26,018 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:21:26,052 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:26,053 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 [2018-03-29 20:21:26,056 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 [2018-03-29 20:21:26,057 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:26,060 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:26,064 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. [2018-03-29 20:21:26,065 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-03-29 20:21:26,102 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc13.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc13.base| 1))) (and (= (select .cse0 |c_main_#t~malloc14.base|) 0) (= 0 (select |c_old(#valid)| |main_#t~malloc13.base|)) (= |c_#valid| (store (store .cse0 |c_main_#t~malloc14.base| 1) |main_#t~malloc13.base| 0))))) is different from true [2018-03-29 20:21:26,112 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc13.base| Int) (|main_#t~malloc14.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc13.base| 1))) (and (= (select .cse0 |main_#t~malloc14.base|) 0) (= 0 (select |c_old(#valid)| |main_#t~malloc13.base|)) (= |c_#valid| (store (store (store .cse0 |main_#t~malloc14.base| 1) |main_#t~malloc13.base| 0) |main_#t~malloc14.base| 0))))) is different from true [2018-03-29 20:21:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:26,124 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:21:26,150 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc14.base_22| Int)) (or (= |c_old(#valid)| (store (store (store |c_#valid| |v_main_#t~malloc14.base_22| 1) |c_main_#t~malloc13.base| 0) |v_main_#t~malloc14.base_22| 0)) (not (= (select |c_#valid| |v_main_#t~malloc14.base_22|) 0)))) is different from false [2018-03-29 20:21:26,159 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc14.base_22| Int) (|v_main_#t~malloc13.base_21| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc13.base_21| 1))) (or (= (store (store (store .cse0 |v_main_#t~malloc14.base_22| 1) |v_main_#t~malloc13.base_21| 0) |v_main_#t~malloc14.base_22| 0) |c_old(#valid)|) (not (= (select |c_#valid| |v_main_#t~malloc13.base_21|) 0)) (not (= (select .cse0 |v_main_#t~malloc14.base_22|) 0))))) is different from false [2018-03-29 20:21:26,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:26,237 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:21:26,237 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-03-29 20:21:26,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-03-29 20:21:26,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-03-29 20:21:26,238 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-03-29 20:21:26,238 INFO L87 Difference]: Start difference. First operand 271 states and 294 transitions. Second operand 12 states. [2018-03-29 20:21:26,268 WARN L1011 $PredicateComparison]: unable to prove that (and (= |c_#valid| |c_old(#valid)|) (forall ((|v_main_#t~malloc14.base_22| Int) (|v_main_#t~malloc13.base_21| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc13.base_21| 1))) (or (= (store (store (store .cse0 |v_main_#t~malloc14.base_22| 1) |v_main_#t~malloc13.base_21| 0) |v_main_#t~malloc14.base_22| 0) |c_old(#valid)|) (not (= (select |c_#valid| |v_main_#t~malloc13.base_21|) 0)) (not (= (select .cse0 |v_main_#t~malloc14.base_22|) 0)))))) is different from false [2018-03-29 20:21:26,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:21:26,658 INFO L93 Difference]: Finished difference Result 407 states and 441 transitions. [2018-03-29 20:21:26,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-03-29 20:21:26,658 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2018-03-29 20:21:26,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:21:26,661 INFO L225 Difference]: With dead ends: 407 [2018-03-29 20:21:26,661 INFO L226 Difference]: Without dead ends: 388 [2018-03-29 20:21:26,661 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 109 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-03-29 20:21:26,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-03-29 20:21:26,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 270. [2018-03-29 20:21:26,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-03-29 20:21:26,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 292 transitions. [2018-03-29 20:21:26,680 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 292 transitions. Word has length 60 [2018-03-29 20:21:26,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:21:26,680 INFO L459 AbstractCegarLoop]: Abstraction has 270 states and 292 transitions. [2018-03-29 20:21:26,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-03-29 20:21:26,680 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 292 transitions. [2018-03-29 20:21:26,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-03-29 20:21:26,681 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:21:26,682 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, 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] [2018-03-29 20:21:26,682 INFO L408 AbstractCegarLoop]: === Iteration 21 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:21:26,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1710677306, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:21:26,691 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:21:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:21:26,721 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:21:26,765 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:26,766 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 [2018-03-29 20:21:26,769 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 [2018-03-29 20:21:26,770 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:26,775 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:26,780 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. [2018-03-29 20:21:26,780 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-03-29 20:21:26,816 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc13.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc13.base| 1))) (and (= (select .cse0 |c_main_#t~malloc14.base|) 0) (= 0 (select |c_old(#valid)| |main_#t~malloc13.base|)) (= |c_#valid| (store (store .cse0 |c_main_#t~malloc14.base| 1) |main_#t~malloc13.base| 0))))) is different from true [2018-03-29 20:21:26,821 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc13.base| Int) (|main_#t~malloc14.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc13.base| 1))) (and (= (select .cse0 |main_#t~malloc14.base|) 0) (= 0 (select |c_old(#valid)| |main_#t~malloc13.base|)) (= |c_#valid| (store (store (store .cse0 |main_#t~malloc14.base| 1) |main_#t~malloc13.base| 0) |main_#t~malloc14.base| 0))))) is different from true [2018-03-29 20:21:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:26,833 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:21:26,881 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc14.base_24| Int)) (or (= (store (store (store |c_#valid| |v_main_#t~malloc14.base_24| 1) |c_main_#t~malloc13.base| 0) |v_main_#t~malloc14.base_24| 0) |c_old(#valid)|) (not (= (select |c_#valid| |v_main_#t~malloc14.base_24|) 0)))) is different from false [2018-03-29 20:21:26,886 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc14.base_24| Int) (|v_main_#t~malloc13.base_23| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc13.base_23| 1))) (or (not (= (select .cse0 |v_main_#t~malloc14.base_24|) 0)) (not (= (select |c_#valid| |v_main_#t~malloc13.base_23|) 0)) (= |c_old(#valid)| (store (store (store .cse0 |v_main_#t~malloc14.base_24| 1) |v_main_#t~malloc13.base_23| 0) |v_main_#t~malloc14.base_24| 0))))) is different from false [2018-03-29 20:21:26,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:26,941 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:21:26,941 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-03-29 20:21:26,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-03-29 20:21:26,942 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-03-29 20:21:26,942 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-03-29 20:21:26,942 INFO L87 Difference]: Start difference. First operand 270 states and 292 transitions. Second operand 12 states. [2018-03-29 20:21:26,973 WARN L1011 $PredicateComparison]: unable to prove that (and (forall ((|v_main_#t~malloc14.base_24| Int) (|v_main_#t~malloc13.base_23| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc13.base_23| 1))) (or (not (= (select .cse0 |v_main_#t~malloc14.base_24|) 0)) (not (= (select |c_#valid| |v_main_#t~malloc13.base_23|) 0)) (= |c_old(#valid)| (store (store (store .cse0 |v_main_#t~malloc14.base_24| 1) |v_main_#t~malloc13.base_23| 0) |v_main_#t~malloc14.base_24| 0))))) (= |c_#valid| |c_old(#valid)|)) is different from false [2018-03-29 20:21:27,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:21:27,416 INFO L93 Difference]: Finished difference Result 408 states and 442 transitions. [2018-03-29 20:21:27,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-03-29 20:21:27,416 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2018-03-29 20:21:27,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:21:27,419 INFO L225 Difference]: With dead ends: 408 [2018-03-29 20:21:27,419 INFO L226 Difference]: Without dead ends: 389 [2018-03-29 20:21:27,419 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 109 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-03-29 20:21:27,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-03-29 20:21:27,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 272. [2018-03-29 20:21:27,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2018-03-29 20:21:27,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 295 transitions. [2018-03-29 20:21:27,439 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 295 transitions. Word has length 60 [2018-03-29 20:21:27,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:21:27,440 INFO L459 AbstractCegarLoop]: Abstraction has 272 states and 295 transitions. [2018-03-29 20:21:27,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-03-29 20:21:27,440 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 295 transitions. [2018-03-29 20:21:27,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-03-29 20:21:27,441 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:21:27,441 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, 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] [2018-03-29 20:21:27,441 INFO L408 AbstractCegarLoop]: === Iteration 22 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:21:27,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1337420224, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:21:27,451 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:21:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:21:27,477 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:21:27,497 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 [2018-03-29 20:21:27,497 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:27,509 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 [2018-03-29 20:21:27,509 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:27,518 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:27,518 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2018-03-29 20:21:27,551 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:27,552 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:27,553 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 23 [2018-03-29 20:21:27,554 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:27,570 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:27,571 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:27,572 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 [2018-03-29 20:21:27,572 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:27,581 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:27,582 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:18 [2018-03-29 20:21:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:27,783 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:21:28,149 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 10 treesize of output 3 [2018-03-29 20:21:28,149 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:28,153 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 11 treesize of output 15 [2018-03-29 20:21:28,162 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-03-29 20:21:28,163 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:28,164 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 3 [2018-03-29 20:21:28,164 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:28,166 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:28,169 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:28,169 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:21, output treesize:3 [2018-03-29 20:21:28,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:28,251 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:21:28,251 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2018-03-29 20:21:28,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-03-29 20:21:28,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-03-29 20:21:28,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2018-03-29 20:21:28,252 INFO L87 Difference]: Start difference. First operand 272 states and 295 transitions. Second operand 26 states. [2018-03-29 20:21:29,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:21:29,232 INFO L93 Difference]: Finished difference Result 311 states and 336 transitions. [2018-03-29 20:21:29,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-03-29 20:21:29,236 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 60 [2018-03-29 20:21:29,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:21:29,238 INFO L225 Difference]: With dead ends: 311 [2018-03-29 20:21:29,238 INFO L226 Difference]: Without dead ends: 305 [2018-03-29 20:21:29,239 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=220, Invalid=1262, Unknown=0, NotChecked=0, Total=1482 [2018-03-29 20:21:29,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-03-29 20:21:29,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 273. [2018-03-29 20:21:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-03-29 20:21:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 295 transitions. [2018-03-29 20:21:29,258 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 295 transitions. Word has length 60 [2018-03-29 20:21:29,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:21:29,258 INFO L459 AbstractCegarLoop]: Abstraction has 273 states and 295 transitions. [2018-03-29 20:21:29,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-03-29 20:21:29,259 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 295 transitions. [2018-03-29 20:21:29,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-03-29 20:21:29,260 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:21:29,260 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, 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] [2018-03-29 20:21:29,260 INFO L408 AbstractCegarLoop]: === Iteration 23 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:21:29,260 INFO L82 PathProgramCache]: Analyzing trace with hash -2138307650, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:21:29,269 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:21:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:21:29,297 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:21:29,333 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:29,334 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 [2018-03-29 20:21:29,337 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 [2018-03-29 20:21:29,337 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:29,342 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:29,348 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. [2018-03-29 20:21:29,348 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-03-29 20:21:29,383 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc13.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc13.base| 1))) (and (= (select .cse0 |c_main_#t~malloc14.base|) 0) (= 0 (select |c_old(#valid)| |main_#t~malloc13.base|)) (= |c_#valid| (store (store .cse0 |c_main_#t~malloc14.base| 1) |main_#t~malloc13.base| 0))))) is different from true [2018-03-29 20:21:29,388 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc13.base| Int) (|main_#t~malloc14.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc13.base| 1))) (and (= (select .cse0 |main_#t~malloc14.base|) 0) (= 0 (select |c_old(#valid)| |main_#t~malloc13.base|)) (= |c_#valid| (store (store (store .cse0 |main_#t~malloc14.base| 1) |main_#t~malloc13.base| 0) |main_#t~malloc14.base| 0))))) is different from true [2018-03-29 20:21:29,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:29,400 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:21:29,428 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc14.base_27| Int)) (or (= (store (store (store |c_#valid| |v_main_#t~malloc14.base_27| 1) |c_main_#t~malloc13.base| 0) |v_main_#t~malloc14.base_27| 0) |c_old(#valid)|) (not (= 0 (select |c_#valid| |v_main_#t~malloc14.base_27|))))) is different from false [2018-03-29 20:21:29,433 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc13.base_26| Int) (|v_main_#t~malloc14.base_27| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc13.base_26| 1))) (or (not (= (select .cse0 |v_main_#t~malloc14.base_27|) 0)) (not (= 0 (select |c_#valid| |v_main_#t~malloc13.base_26|))) (= (store (store (store .cse0 |v_main_#t~malloc14.base_27| 1) |v_main_#t~malloc13.base_26| 0) |v_main_#t~malloc14.base_27| 0) |c_old(#valid)|)))) is different from false [2018-03-29 20:21:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:29,490 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:21:29,490 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-03-29 20:21:29,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-03-29 20:21:29,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-03-29 20:21:29,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-03-29 20:21:29,491 INFO L87 Difference]: Start difference. First operand 273 states and 295 transitions. Second operand 12 states. [2018-03-29 20:21:29,507 WARN L1011 $PredicateComparison]: unable to prove that (and (forall ((|v_main_#t~malloc13.base_26| Int) (|v_main_#t~malloc14.base_27| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc13.base_26| 1))) (or (not (= (select .cse0 |v_main_#t~malloc14.base_27|) 0)) (not (= 0 (select |c_#valid| |v_main_#t~malloc13.base_26|))) (= (store (store (store .cse0 |v_main_#t~malloc14.base_27| 1) |v_main_#t~malloc13.base_26| 0) |v_main_#t~malloc14.base_27| 0) |c_old(#valid)|)))) (= |c_#valid| |c_old(#valid)|)) is different from false [2018-03-29 20:21:30,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:21:30,010 INFO L93 Difference]: Finished difference Result 276 states and 295 transitions. [2018-03-29 20:21:30,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-03-29 20:21:30,010 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 61 [2018-03-29 20:21:30,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:21:30,012 INFO L225 Difference]: With dead ends: 276 [2018-03-29 20:21:30,012 INFO L226 Difference]: Without dead ends: 256 [2018-03-29 20:21:30,012 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-03-29 20:21:30,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-03-29 20:21:30,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 137. [2018-03-29 20:21:30,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-03-29 20:21:30,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 144 transitions. [2018-03-29 20:21:30,023 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 144 transitions. Word has length 61 [2018-03-29 20:21:30,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:21:30,023 INFO L459 AbstractCegarLoop]: Abstraction has 137 states and 144 transitions. [2018-03-29 20:21:30,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-03-29 20:21:30,024 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 144 transitions. [2018-03-29 20:21:30,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-03-29 20:21:30,024 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:21:30,024 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2018-03-29 20:21:30,025 INFO L408 AbstractCegarLoop]: === Iteration 24 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:21:30,025 INFO L82 PathProgramCache]: Analyzing trace with hash -484778563, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:21:30,032 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:21:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:21:30,060 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:21:30,072 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 [2018-03-29 20:21:30,072 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:30,098 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 [2018-03-29 20:21:30,098 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:30,105 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:30,105 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2018-03-29 20:21:30,123 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:30,124 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:30,124 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 23 [2018-03-29 20:21:30,125 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:30,135 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:30,135 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:30,136 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 [2018-03-29 20:21:30,136 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:30,141 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:30,141 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:16 [2018-03-29 20:21:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:30,432 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:21:30,967 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 10 treesize of output 3 [2018-03-29 20:21:30,968 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:30,981 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 11 treesize of output 15 [2018-03-29 20:21:30,997 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 3 [2018-03-29 20:21:30,998 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:31,006 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-03-29 20:21:31,006 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:31,010 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:31,015 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:31,016 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:24, output treesize:7 [2018-03-29 20:21:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:31,101 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:21:31,101 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21] total 43 [2018-03-29 20:21:31,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-03-29 20:21:31,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-03-29 20:21:31,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1757, Unknown=0, NotChecked=0, Total=1892 [2018-03-29 20:21:31,103 INFO L87 Difference]: Start difference. First operand 137 states and 144 transitions. Second operand 44 states. [2018-03-29 20:21:32,789 WARN L151 SmtUtils]: Spent 174ms on a formula simplification. DAG size of input: 42 DAG size of output 41 [2018-03-29 20:21:34,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:21:34,122 INFO L93 Difference]: Finished difference Result 210 states and 220 transitions. [2018-03-29 20:21:34,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-03-29 20:21:34,122 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 66 [2018-03-29 20:21:34,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:21:34,123 INFO L225 Difference]: With dead ends: 210 [2018-03-29 20:21:34,123 INFO L226 Difference]: Without dead ends: 209 [2018-03-29 20:21:34,124 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=861, Invalid=6795, Unknown=0, NotChecked=0, Total=7656 [2018-03-29 20:21:34,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-03-29 20:21:34,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 166. [2018-03-29 20:21:34,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-03-29 20:21:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 175 transitions. [2018-03-29 20:21:34,133 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 175 transitions. Word has length 66 [2018-03-29 20:21:34,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:21:34,133 INFO L459 AbstractCegarLoop]: Abstraction has 166 states and 175 transitions. [2018-03-29 20:21:34,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-03-29 20:21:34,133 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 175 transitions. [2018-03-29 20:21:34,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-03-29 20:21:34,134 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:21:34,134 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1] [2018-03-29 20:21:34,134 INFO L408 AbstractCegarLoop]: === Iteration 25 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:21:34,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1814952698, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:21:34,143 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:21:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:21:34,164 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:21:34,176 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 [2018-03-29 20:21:34,176 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:34,185 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 [2018-03-29 20:21:34,185 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:34,191 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:34,191 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2018-03-29 20:21:34,210 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:34,216 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:34,217 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 [2018-03-29 20:21:34,217 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:34,225 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:34,226 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 23 [2018-03-29 20:21:34,226 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:34,232 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:34,232 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:19 [2018-03-29 20:21:34,286 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 [2018-03-29 20:21:34,288 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 [2018-03-29 20:21:34,288 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:34,289 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:34,294 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:34,294 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:34, output treesize:30 [2018-03-29 20:21:34,432 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 20 treesize of output 16 [2018-03-29 20:21:34,437 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 16 treesize of output 13 [2018-03-29 20:21:34,437 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-03-29 20:21:34,440 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-03-29 20:21:34,447 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2018-03-29 20:21:34,448 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:55 [2018-03-29 20:21:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:34,678 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:21:35,217 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 13 treesize of output 11 [2018-03-29 20:21:35,225 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2018-03-29 20:21:35,225 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:35,227 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:35,230 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:35,231 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:14 [2018-03-29 20:21:35,343 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 10 treesize of output 3 [2018-03-29 20:21:35,344 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:35,348 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 11 treesize of output 15 [2018-03-29 20:21:35,355 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-03-29 20:21:35,355 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:35,356 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 3 [2018-03-29 20:21:35,356 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:35,358 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:35,361 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:35,362 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:24, output treesize:7 [2018-03-29 20:21:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:35,457 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:21:35,457 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 41 [2018-03-29 20:21:35,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-03-29 20:21:35,458 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-03-29 20:21:35,458 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1590, Unknown=0, NotChecked=0, Total=1722 [2018-03-29 20:21:35,458 INFO L87 Difference]: Start difference. First operand 166 states and 175 transitions. Second operand 42 states. [2018-03-29 20:21:37,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:21:37,822 INFO L93 Difference]: Finished difference Result 194 states and 203 transitions. [2018-03-29 20:21:37,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-03-29 20:21:37,823 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 67 [2018-03-29 20:21:37,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:21:37,824 INFO L225 Difference]: With dead ends: 194 [2018-03-29 20:21:37,824 INFO L226 Difference]: Without dead ends: 188 [2018-03-29 20:21:37,826 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1165 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=625, Invalid=5227, Unknown=0, NotChecked=0, Total=5852 [2018-03-29 20:21:37,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-03-29 20:21:37,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 144. [2018-03-29 20:21:37,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-03-29 20:21:37,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2018-03-29 20:21:37,839 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 67 [2018-03-29 20:21:37,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:21:37,840 INFO L459 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2018-03-29 20:21:37,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-03-29 20:21:37,840 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2018-03-29 20:21:37,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-03-29 20:21:37,840 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:21:37,841 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:21:37,841 INFO L408 AbstractCegarLoop]: === Iteration 26 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:21:37,841 INFO L82 PathProgramCache]: Analyzing trace with hash 325820419, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:21:37,849 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:21:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:21:37,873 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:21:37,895 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 [2018-03-29 20:21:37,895 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:37,902 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 [2018-03-29 20:21:37,902 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:37,907 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:37,907 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2018-03-29 20:21:37,925 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:37,926 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:37,926 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 23 [2018-03-29 20:21:37,927 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:37,936 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:37,937 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:37,937 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 [2018-03-29 20:21:37,937 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:37,943 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:37,943 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:16 [2018-03-29 20:21:38,355 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:38,355 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:21:39,307 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 10 treesize of output 3 [2018-03-29 20:21:39,307 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:39,313 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 11 treesize of output 15 [2018-03-29 20:21:39,321 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 3 [2018-03-29 20:21:39,322 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:39,322 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-03-29 20:21:39,322 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:39,325 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:39,329 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:39,329 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:27, output treesize:10 [2018-03-29 20:21:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:39,402 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:21:39,403 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2018-03-29 20:21:39,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-03-29 20:21:39,403 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-03-29 20:21:39,404 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2797, Unknown=0, NotChecked=0, Total=2970 [2018-03-29 20:21:39,404 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand 55 states. [2018-03-29 20:21:44,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:21:44,098 INFO L93 Difference]: Finished difference Result 225 states and 236 transitions. [2018-03-29 20:21:44,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-03-29 20:21:44,098 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 73 [2018-03-29 20:21:44,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:21:44,099 INFO L225 Difference]: With dead ends: 225 [2018-03-29 20:21:44,099 INFO L226 Difference]: Without dead ends: 224 [2018-03-29 20:21:44,102 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1316, Invalid=11566, Unknown=0, NotChecked=0, Total=12882 [2018-03-29 20:21:44,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-03-29 20:21:44,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 173. [2018-03-29 20:21:44,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-03-29 20:21:44,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 183 transitions. [2018-03-29 20:21:44,111 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 183 transitions. Word has length 73 [2018-03-29 20:21:44,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:21:44,111 INFO L459 AbstractCegarLoop]: Abstraction has 173 states and 183 transitions. [2018-03-29 20:21:44,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-03-29 20:21:44,112 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 183 transitions. [2018-03-29 20:21:44,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-03-29 20:21:44,112 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:21:44,113 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, 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, 1, 1, 1, 1, 1] [2018-03-29 20:21:44,113 INFO L408 AbstractCegarLoop]: === Iteration 27 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:21:44,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1838779264, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:21:44,124 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:21:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:21:44,151 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:21:44,154 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 [2018-03-29 20:21:44,154 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:44,159 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 [2018-03-29 20:21:44,160 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:44,163 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:44,163 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-03-29 20:21:44,174 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:44,175 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 [2018-03-29 20:21:44,175 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:44,182 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:44,183 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:21:44,183 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 [2018-03-29 20:21:44,183 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:44,187 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:44,187 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-03-29 20:21:44,204 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 18 treesize of output 15 [2018-03-29 20:21:44,205 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 15 treesize of output 14 [2018-03-29 20:21:44,206 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:44,207 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:44,211 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:44,211 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2018-03-29 20:21:44,224 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 31 treesize of output 32 [2018-03-29 20:21:44,225 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 [2018-03-29 20:21:44,226 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:44,230 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:44,234 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. [2018-03-29 20:21:44,234 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:35, output treesize:31 [2018-03-29 20:21:44,389 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 [2018-03-29 20:21:44,395 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 [2018-03-29 20:21:44,396 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-03-29 20:21:44,402 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 [2018-03-29 20:21:44,402 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:44,406 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-03-29 20:21:44,412 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-03-29 20:21:44,412 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:41, output treesize:23 [2018-03-29 20:21:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:44,687 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:21:45,464 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 13 treesize of output 11 [2018-03-29 20:21:45,472 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2018-03-29 20:21:45,472 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:21:45,476 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:21:45,480 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-03-29 20:21:45,481 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:35 [2018-03-29 20:21:45,902 WARN L148 SmtUtils]: Spent 313ms on a formula simplification that was a NOOP. DAG size: 34 [2018-03-29 20:21:46,286 WARN L148 SmtUtils]: Spent 314ms on a formula simplification that was a NOOP. DAG size: 34 [2018-03-29 20:21:46,306 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:21:46,326 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:21:46,327 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 47 [2018-03-29 20:21:46,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-03-29 20:21:46,327 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-03-29 20:21:46,328 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2102, Unknown=0, NotChecked=0, Total=2256 [2018-03-29 20:21:46,328 INFO L87 Difference]: Start difference. First operand 173 states and 183 transitions. Second operand 48 states. [2018-03-29 20:21:49,657 WARN L151 SmtUtils]: Spent 2795ms on a formula simplification. DAG size of input: 49 DAG size of output 41 [2018-03-29 20:21:59,186 WARN L151 SmtUtils]: Spent 9478ms on a formula simplification. DAG size of input: 69 DAG size of output 62 [2018-03-29 20:22:07,308 WARN L151 SmtUtils]: Spent 8060ms on a formula simplification. DAG size of input: 67 DAG size of output 60 [2018-03-29 20:22:13,387 WARN L148 SmtUtils]: Spent 6025ms on a formula simplification that was a NOOP. DAG size: 54 [2018-03-29 20:22:19,491 WARN L151 SmtUtils]: Spent 6049ms on a formula simplification. DAG size of input: 88 DAG size of output 70 [2018-03-29 20:22:27,254 WARN L151 SmtUtils]: Spent 1691ms on a formula simplification. DAG size of input: 61 DAG size of output 51 [2018-03-29 20:22:29,996 WARN L151 SmtUtils]: Spent 2300ms on a formula simplification. DAG size of input: 61 DAG size of output 49 [2018-03-29 20:22:32,206 WARN L151 SmtUtils]: Spent 2146ms on a formula simplification. DAG size of input: 48 DAG size of output 42 [2018-03-29 20:22:40,692 WARN L151 SmtUtils]: Spent 8044ms on a formula simplification. DAG size of input: 53 DAG size of output 51 [2018-03-29 20:22:41,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:22:41,976 INFO L93 Difference]: Finished difference Result 247 states and 259 transitions. [2018-03-29 20:22:41,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-03-29 20:22:41,977 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 74 [2018-03-29 20:22:41,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:22:41,978 INFO L225 Difference]: With dead ends: 247 [2018-03-29 20:22:41,978 INFO L226 Difference]: Without dead ends: 241 [2018-03-29 20:22:41,979 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 50.6s TimeCoverageRelationStatistics Valid=860, Invalid=7512, Unknown=0, NotChecked=0, Total=8372 [2018-03-29 20:22:41,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-03-29 20:22:41,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 213. [2018-03-29 20:22:41,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-03-29 20:22:41,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 224 transitions. [2018-03-29 20:22:41,994 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 224 transitions. Word has length 74 [2018-03-29 20:22:41,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:22:41,995 INFO L459 AbstractCegarLoop]: Abstraction has 213 states and 224 transitions. [2018-03-29 20:22:41,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-03-29 20:22:41,995 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 224 transitions. [2018-03-29 20:22:41,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-03-29 20:22:41,995 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:22:41,995 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:22:41,995 INFO L408 AbstractCegarLoop]: === Iteration 28 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:22:41,996 INFO L82 PathProgramCache]: Analyzing trace with hash -2123582662, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:22:42,002 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:22:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:22:42,024 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:22:42,026 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 [2018-03-29 20:22:42,027 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:42,027 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:42,028 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-03-29 20:22:42,033 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:22:42,034 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:22:42,034 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 [2018-03-29 20:22:42,034 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:42,039 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 6 treesize of output 5 [2018-03-29 20:22:42,039 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:42,042 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:42,042 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2018-03-29 20:22:42,056 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 [2018-03-29 20:22:42,057 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 [2018-03-29 20:22:42,057 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:42,058 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:42,061 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:42,061 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2018-03-29 20:22:42,148 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 23 treesize of output 24 [2018-03-29 20:22:42,149 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 8 treesize of output 7 [2018-03-29 20:22:42,150 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:42,153 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:42,157 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:42,158 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:19 [2018-03-29 20:22:42,222 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 [2018-03-29 20:22:42,227 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 [2018-03-29 20:22:42,227 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-03-29 20:22:42,230 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-03-29 20:22:42,235 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-03-29 20:22:42,235 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:29, output treesize:32 [2018-03-29 20:22:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:22:42,347 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:22:43,540 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2018-03-29 20:22:43,553 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 [2018-03-29 20:22:43,553 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:43,565 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 19 treesize of output 15 [2018-03-29 20:22:43,567 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2018-03-29 20:22:43,567 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:43,569 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:43,570 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 20 treesize of output 18 [2018-03-29 20:22:43,572 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 9 treesize of output 1 [2018-03-29 20:22:43,572 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:43,574 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:43,583 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-03-29 20:22:43,600 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-03-29 20:22:43,600 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:55, output treesize:84 [2018-03-29 20:22:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:22:43,785 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:22:43,785 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 40 [2018-03-29 20:22:43,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-03-29 20:22:43,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-03-29 20:22:43,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2018-03-29 20:22:43,786 INFO L87 Difference]: Start difference. First operand 213 states and 224 transitions. Second operand 41 states. [2018-03-29 20:22:45,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:22:45,228 INFO L93 Difference]: Finished difference Result 283 states and 296 transitions. [2018-03-29 20:22:45,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-03-29 20:22:45,229 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 76 [2018-03-29 20:22:45,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:22:45,230 INFO L225 Difference]: With dead ends: 283 [2018-03-29 20:22:45,230 INFO L226 Difference]: Without dead ends: 282 [2018-03-29 20:22:45,231 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=549, Invalid=3741, Unknown=0, NotChecked=0, Total=4290 [2018-03-29 20:22:45,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-03-29 20:22:45,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 275. [2018-03-29 20:22:45,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-03-29 20:22:45,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 289 transitions. [2018-03-29 20:22:45,249 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 289 transitions. Word has length 76 [2018-03-29 20:22:45,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:22:45,249 INFO L459 AbstractCegarLoop]: Abstraction has 275 states and 289 transitions. [2018-03-29 20:22:45,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-03-29 20:22:45,249 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 289 transitions. [2018-03-29 20:22:45,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-03-29 20:22:45,250 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:22:45,250 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:22:45,250 INFO L408 AbstractCegarLoop]: === Iteration 29 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:22:45,251 INFO L82 PathProgramCache]: Analyzing trace with hash -325192180, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:22:45,256 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:22:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:22:45,279 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:22:45,283 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 [2018-03-29 20:22:45,283 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:45,289 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-03-29 20:22:45,289 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:45,294 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:45,294 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:16 [2018-03-29 20:22:45,307 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:22:45,309 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 14 treesize of output 17 [2018-03-29 20:22:45,309 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:45,317 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:22:45,317 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:22:45,318 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 [2018-03-29 20:22:45,318 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:45,322 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:45,322 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:17 [2018-03-29 20:22:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:22:45,877 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:22:46,870 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 10 treesize of output 3 [2018-03-29 20:22:46,870 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:46,875 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 11 treesize of output 15 [2018-03-29 20:22:46,883 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 3 [2018-03-29 20:22:46,883 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:46,884 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-03-29 20:22:46,884 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:46,886 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:46,890 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:46,890 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:27, output treesize:10 [2018-03-29 20:22:46,943 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:22:46,964 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:22:46,964 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 53 [2018-03-29 20:22:46,964 INFO L442 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-03-29 20:22:46,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-03-29 20:22:46,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2655, Unknown=0, NotChecked=0, Total=2862 [2018-03-29 20:22:46,965 INFO L87 Difference]: Start difference. First operand 275 states and 289 transitions. Second operand 54 states. [2018-03-29 20:22:54,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:22:54,170 INFO L93 Difference]: Finished difference Result 335 states and 351 transitions. [2018-03-29 20:22:54,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-03-29 20:22:54,170 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 78 [2018-03-29 20:22:54,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:22:54,171 INFO L225 Difference]: With dead ends: 335 [2018-03-29 20:22:54,171 INFO L226 Difference]: Without dead ends: 319 [2018-03-29 20:22:54,172 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2714 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1658, Invalid=11682, Unknown=0, NotChecked=0, Total=13340 [2018-03-29 20:22:54,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-03-29 20:22:54,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 307. [2018-03-29 20:22:54,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-03-29 20:22:54,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 321 transitions. [2018-03-29 20:22:54,184 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 321 transitions. Word has length 78 [2018-03-29 20:22:54,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:22:54,185 INFO L459 AbstractCegarLoop]: Abstraction has 307 states and 321 transitions. [2018-03-29 20:22:54,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-03-29 20:22:54,185 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 321 transitions. [2018-03-29 20:22:54,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-03-29 20:22:54,185 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:22:54,186 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:22:54,186 INFO L408 AbstractCegarLoop]: === Iteration 30 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-03-29 20:22:54,186 INFO L82 PathProgramCache]: Analyzing trace with hash -189865219, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:22:54,194 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:22:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:22:54,225 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:22:54,234 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 [2018-03-29 20:22:54,234 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:54,241 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 [2018-03-29 20:22:54,241 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:54,247 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:54,247 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:22 [2018-03-29 20:22:54,268 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:22:54,269 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:22:54,269 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 21 [2018-03-29 20:22:54,269 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:54,281 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:22:54,282 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:22:54,283 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 [2018-03-29 20:22:54,283 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:54,289 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:54,289 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:22 [2018-03-29 20:22:54,318 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 19 treesize of output 16 [2018-03-29 20:22:54,326 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 16 treesize of output 15 [2018-03-29 20:22:54,327 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:54,328 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:54,334 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:54,335 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2018-03-29 20:22:54,349 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:22:54,352 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 32 treesize of output 33 [2018-03-29 20:22:54,354 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 [2018-03-29 20:22:54,354 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:54,359 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:54,366 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. [2018-03-29 20:22:54,366 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:47, output treesize:43 [2018-03-29 20:22:54,674 INFO L700 Elim1Store]: detected not equals via solver [2018-03-29 20:22:54,676 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 35 treesize of output 33 [2018-03-29 20:22:54,683 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 19 treesize of output 16 [2018-03-29 20:22:54,683 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-03-29 20:22:54,691 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 [2018-03-29 20:22:54,691 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:54,694 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-03-29 20:22:54,703 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-03-29 20:22:54,703 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:58, output treesize:63 [2018-03-29 20:22:55,550 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:22:55,550 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:22:57,154 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 18 treesize of output 16 [2018-03-29 20:22:57,162 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 7 treesize of output 3 [2018-03-29 20:22:57,163 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:57,164 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:57,171 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:57,171 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:40, output treesize:54 [2018-03-29 20:22:57,557 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 32 treesize of output 26 [2018-03-29 20:22:57,558 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:57,573 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 26 treesize of output 29 [2018-03-29 20:22:57,590 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 3 [2018-03-29 20:22:57,590 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:57,595 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:57,610 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 32 treesize of output 26 [2018-03-29 20:22:57,610 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:57,624 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 26 treesize of output 29 [2018-03-29 20:22:57,640 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 3 [2018-03-29 20:22:57,640 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-03-29 20:22:57,645 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 20:22:57,658 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-03-29 20:22:57,658 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:80, output treesize:31 [2018-03-29 20:22:57,751 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:22:57,772 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:22:57,772 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 65 [2018-03-29 20:22:57,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-03-29 20:22:57,773 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-03-29 20:22:57,773 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=4064, Unknown=0, NotChecked=0, Total=4290 [2018-03-29 20:22:57,773 INFO L87 Difference]: Start difference. First operand 307 states and 321 transitions. Second operand 66 states. [2018-03-29 20:22:58,407 WARN L151 SmtUtils]: Spent 185ms on a formula simplification. DAG size of input: 98 DAG size of output 96 [2018-03-29 20:22:58,838 WARN L151 SmtUtils]: Spent 138ms on a formula simplification. DAG size of input: 96 DAG size of output 81 [2018-03-29 20:23:03,435 WARN L148 SmtUtils]: Spent 2092ms on a formula simplification that was a NOOP. DAG size: 86 [2018-03-29 20:23:03,928 WARN L148 SmtUtils]: Spent 412ms on a formula simplification that was a NOOP. DAG size: 74 [2018-03-29 20:23:04,179 WARN L151 SmtUtils]: Spent 162ms on a formula simplification. DAG size of input: 94 DAG size of output 90 [2018-03-29 20:23:05,361 WARN L151 SmtUtils]: Spent 183ms on a formula simplification. DAG size of input: 91 DAG size of output 87 [2018-03-29 20:23:05,828 WARN L151 SmtUtils]: Spent 174ms on a formula simplification. DAG size of input: 100 DAG size of output 84 Received shutdown request... [2018-03-29 20:23:07,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-03-29 20:23:07,179 WARN L519 AbstractCegarLoop]: Verification canceled [2018-03-29 20:23:07,182 WARN L197 ceAbstractionStarter]: Timeout [2018-03-29 20:23:07,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.03 08:23:07 BoogieIcfgContainer [2018-03-29 20:23:07,183 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-03-29 20:23:07,184 INFO L168 Benchmark]: Toolchain (without parser) took 145454.64 ms. Allocated memory was 300.9 MB in the beginning and 568.3 MB in the end (delta: 267.4 MB). Free memory was 238.3 MB in the beginning and 381.5 MB in the end (delta: -143.2 MB). Peak memory consumption was 124.2 MB. Max. memory is 5.3 GB. [2018-03-29 20:23:07,185 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 300.9 MB. Free memory is still 263.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-03-29 20:23:07,185 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.16 ms. Allocated memory is still 300.9 MB. Free memory was 238.3 MB in the beginning and 214.3 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 5.3 GB. [2018-03-29 20:23:07,186 INFO L168 Benchmark]: Boogie Preprocessor took 54.10 ms. Allocated memory is still 300.9 MB. Free memory was 214.3 MB in the beginning and 211.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 5.3 GB. [2018-03-29 20:23:07,186 INFO L168 Benchmark]: RCFGBuilder took 566.71 ms. Allocated memory was 300.9 MB in the beginning and 458.2 MB in the end (delta: 157.3 MB). Free memory was 211.3 MB in the beginning and 390.2 MB in the end (delta: -178.9 MB). Peak memory consumption was 21.2 MB. Max. memory is 5.3 GB. [2018-03-29 20:23:07,186 INFO L168 Benchmark]: TraceAbstraction took 144505.75 ms. Allocated memory was 458.2 MB in the beginning and 568.3 MB in the end (delta: 110.1 MB). Free memory was 390.2 MB in the beginning and 381.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 118.9 MB. Max. memory is 5.3 GB. [2018-03-29 20:23:07,188 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 300.9 MB. Free memory is still 263.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 322.16 ms. Allocated memory is still 300.9 MB. Free memory was 238.3 MB in the beginning and 214.3 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 54.10 ms. Allocated memory is still 300.9 MB. Free memory was 214.3 MB in the beginning and 211.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 566.71 ms. Allocated memory was 300.9 MB in the beginning and 458.2 MB in the end (delta: 157.3 MB). Free memory was 211.3 MB in the beginning and 390.2 MB in the end (delta: -178.9 MB). Peak memory consumption was 21.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 144505.75 ms. Allocated memory was 458.2 MB in the beginning and 568.3 MB in the end (delta: 110.1 MB). Free memory was 390.2 MB in the beginning and 381.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 118.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 570]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 570). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 31 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 77. - TimeoutResultAtElement [Line: 569]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 569). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 31 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 77. - TimeoutResultAtElement [Line: 570]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 570). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 31 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 77. - TimeoutResultAtElement [Line: 553]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 553). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 31 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 77. - TimeoutResultAtElement [Line: 569]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 569). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 31 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 77. - TimeoutResultAtElement [Line: 549]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 549). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 31 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 77. - TimeoutResultAtElement [Line: 545]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 545). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 31 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 77. - TimeoutResultAtElement [Line: 543]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 543). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 31 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 77. - TimeoutResultAtElement [Line: 545]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 545). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 31 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 77. - TimeoutResultAtElement [Line: 550]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 550). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 31 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 77. - TimeoutResultAtElement [Line: 543]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 543). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 31 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 77. - TimeoutResultAtElement [Line: 545]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 545). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 31 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 77. - TimeoutResultAtElement [Line: 550]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 550). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 31 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 77. - TimeoutResultAtElement [Line: 549]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 549). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 31 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 77. - TimeoutResultAtElement [Line: 545]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 545). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 31 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 77. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 106 locations, 15 error locations. TIMEOUT Result, 144.4s OverallTime, 30 OverallIterations, 4 TraceHistogramMax, 123.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2487 SDtfs, 7835 SDslu, 22547 SDs, 0 SdLazy, 15201 SolverSat, 806 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 26.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3514 GetRequests, 2467 SyntacticMatches, 31 SemanticMatches, 1015 ConstructedPredicates, 20 IntricatePredicates, 0 DeprecatedPredicates, 14232 ImplicationChecksByTransitivity, 109.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=307occurred in iteration=29, 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: 0.3s AutomataMinimizationTime, 29 MinimizatonAttempts, 975 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 18.5s InterpolantComputationTime, 1545 NumberOfCodeBlocks, 1545 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 3030 ConstructedInterpolants, 433 QuantifiedInterpolants, 2285111 SizeOfPredicates, 458 NumberOfNonLiveVariables, 4458 ConjunctsInSsa, 820 ConjunctsInUnsatCore, 60 InterpolantComputations, 36 PerfectInterpolantSequences, 28/378 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncat-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-03-29_20-23-07-197.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncat-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-03-29_20-23-07-197.csv Completed graceful shutdown