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 0.1.23-835382a-m [2018-04-05 15:35:04,808 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-05 15:35:04,810 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-05 15:35:04,879 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-04-05 15:35:04,957 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 [2018-04-05 15:35:05,033 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-05 15:35:05,033 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-05 15:35:05,034 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-05 15:35:05,034 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-05 15:35:05,035 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-05 15:35:05,036 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-05 15:35:05,036 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-05 15:35:05,036 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-05 15:35:05,036 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-05 15:35:05,037 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-05 15:35:05,037 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-05 15:35:05,038 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-05 15:35:05,038 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-05 15:35:05,038 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-05 15:35:05,038 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-05 15:35:05,038 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-05 15:35:05,039 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-05 15:35:05,039 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-05 15:35:05,039 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-05 15:35:05,039 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-05 15:35:05,039 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-05 15:35:05,040 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-05 15:35:05,040 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-05 15:35:05,040 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-05 15:35:05,040 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-05 15:35:05,050 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-05 15:35:05,050 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-05 15:35:05,050 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-05 15:35:05,050 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-05 15:35:05,051 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-05 15:35:05,051 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-05 15:35:05,051 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 15:35:05,051 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-05 15:35:05,052 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-05 15:35:05,052 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-05 15:35:05,053 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-05 15:35:05,053 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-05 15:35:05,162 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-05 15:35:05,185 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-05 15:35:05,190 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-05 15:35:05,192 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-05 15:35:05,193 INFO L276 PluginConnector]: CDTParser initialized [2018-04-05 15:35:05,194 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 [2018-04-05 15:35:05,718 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG91bc065a3 [2018-04-05 15:35:06,224 INFO L287 CDTParser]: IsIndexed: true [2018-04-05 15:35:06,224 INFO L288 CDTParser]: Found 1 translation units. [2018-04-05 15:35:06,225 INFO L168 CDTParser]: Scanning cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 15:35:06,253 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-05 15:35:06,254 INFO L215 ultiparseSymbolTable]: [2018-04-05 15:35:06,254 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-05 15:35:06,254 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 [2018-04-05 15:35:06,254 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 15:35:06,254 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 [2018-04-05 15:35:06,254 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 [2018-04-05 15:35:06,254 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-05 15:35:06,255 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 [2018-04-05 15:35:06,255 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 [2018-04-05 15:35:06,255 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 [2018-04-05 15:35:06,255 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 [2018-04-05 15:35:06,255 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 [2018-04-05 15:35:06,255 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 [2018-04-05 15:35:06,255 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 [2018-04-05 15:35:06,256 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 [2018-04-05 15:35:06,256 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 [2018-04-05 15:35:06,256 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 [2018-04-05 15:35:06,256 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 [2018-04-05 15:35:06,256 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 [2018-04-05 15:35:06,256 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 [2018-04-05 15:35:06,256 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 [2018-04-05 15:35:06,257 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 [2018-04-05 15:35:06,257 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 [2018-04-05 15:35:06,257 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 [2018-04-05 15:35:06,257 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 [2018-04-05 15:35:06,257 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 [2018-04-05 15:35:06,257 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 [2018-04-05 15:35:06,257 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 [2018-04-05 15:35:06,258 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 [2018-04-05 15:35:06,258 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 [2018-04-05 15:35:06,258 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 [2018-04-05 15:35:06,258 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 [2018-04-05 15:35:06,258 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 [2018-04-05 15:35:06,258 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 [2018-04-05 15:35:06,258 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 [2018-04-05 15:35:06,259 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 [2018-04-05 15:35:06,259 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 [2018-04-05 15:35:06,259 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 [2018-04-05 15:35:06,259 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 [2018-04-05 15:35:06,259 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 [2018-04-05 15:35:06,259 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 [2018-04-05 15:35:06,259 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 [2018-04-05 15:35:06,260 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 [2018-04-05 15:35:06,260 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 [2018-04-05 15:35:06,260 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 [2018-04-05 15:35:06,260 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 [2018-04-05 15:35:06,260 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 [2018-04-05 15:35:06,260 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 [2018-04-05 15:35:06,265 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 [2018-04-05 15:35:06,265 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 [2018-04-05 15:35:06,265 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 [2018-04-05 15:35:06,265 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 [2018-04-05 15:35:06,266 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 [2018-04-05 15:35:06,266 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 [2018-04-05 15:35:06,266 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 [2018-04-05 15:35:06,266 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 [2018-04-05 15:35:06,266 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 [2018-04-05 15:35:06,266 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 [2018-04-05 15:35:06,266 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 [2018-04-05 15:35:06,266 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 [2018-04-05 15:35:06,267 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 [2018-04-05 15:35:06,267 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 [2018-04-05 15:35:06,267 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 [2018-04-05 15:35:06,267 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 [2018-04-05 15:35:06,267 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 [2018-04-05 15:35:06,267 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 [2018-04-05 15:35:06,267 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 [2018-04-05 15:35:06,267 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 [2018-04-05 15:35:06,268 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 [2018-04-05 15:35:06,268 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 [2018-04-05 15:35:06,268 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 [2018-04-05 15:35:06,268 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 [2018-04-05 15:35:06,268 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 [2018-04-05 15:35:06,268 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 [2018-04-05 15:35:06,268 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 [2018-04-05 15:35:06,268 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 [2018-04-05 15:35:06,269 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 [2018-04-05 15:35:06,272 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 [2018-04-05 15:35:06,272 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 [2018-04-05 15:35:06,272 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 [2018-04-05 15:35:06,273 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 [2018-04-05 15:35:06,273 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 [2018-04-05 15:35:06,273 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 [2018-04-05 15:35:06,273 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 [2018-04-05 15:35:06,273 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 [2018-04-05 15:35:06,273 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 [2018-04-05 15:35:06,273 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 [2018-04-05 15:35:06,273 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 [2018-04-05 15:35:06,274 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 [2018-04-05 15:35:06,274 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 [2018-04-05 15:35:06,274 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 [2018-04-05 15:35:06,274 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 [2018-04-05 15:35:06,274 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 [2018-04-05 15:35:06,274 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 [2018-04-05 15:35:06,274 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 [2018-04-05 15:35:06,274 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 [2018-04-05 15:35:06,274 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 [2018-04-05 15:35:06,275 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 [2018-04-05 15:35:06,275 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 [2018-04-05 15:35:06,275 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 [2018-04-05 15:35:06,275 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 [2018-04-05 15:35:06,275 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 [2018-04-05 15:35:06,275 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 [2018-04-05 15:35:06,275 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 [2018-04-05 15:35:06,275 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 [2018-04-05 15:35:06,276 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 [2018-04-05 15:35:06,280 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 [2018-04-05 15:35:06,280 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 [2018-04-05 15:35:06,281 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 [2018-04-05 15:35:06,281 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 [2018-04-05 15:35:06,281 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 [2018-04-05 15:35:06,281 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 [2018-04-05 15:35:06,281 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 [2018-04-05 15:35:06,281 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 [2018-04-05 15:35:06,281 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 [2018-04-05 15:35:06,281 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 [2018-04-05 15:35:06,282 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 [2018-04-05 15:35:06,282 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 [2018-04-05 15:35:06,282 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 [2018-04-05 15:35:06,282 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 [2018-04-05 15:35:06,282 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 [2018-04-05 15:35:06,282 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 [2018-04-05 15:35:06,282 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 [2018-04-05 15:35:06,282 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 [2018-04-05 15:35:06,282 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 [2018-04-05 15:35:06,283 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 [2018-04-05 15:35:06,283 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 [2018-04-05 15:35:06,362 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG91bc065a3 [2018-04-05 15:35:06,382 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-05 15:35:06,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-05 15:35:06,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-05 15:35:06,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-05 15:35:06,402 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-05 15:35:06,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 03:35:06" (1/1) ... [2018-04-05 15:35:06,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@497673d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:35:06, skipping insertion in model container [2018-04-05 15:35:06,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 03:35:06" (1/1) ... [2018-04-05 15:35:06,451 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-05 15:35:06,525 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-05 15:35:07,008 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-05 15:35:07,147 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-05 15:35:07,186 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 112 non ball SCCs. Number of states in SCCs 112. [2018-04-05 15:35:07,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:35:07 WrapperNode [2018-04-05 15:35:07,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-05 15:35:07,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-05 15:35:07,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-05 15:35:07,338 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-05 15:35:07,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:35:07" (1/1) ... [2018-04-05 15:35:07,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:35:07" (1/1) ... [2018-04-05 15:35:07,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:35:07" (1/1) ... [2018-04-05 15:35:07,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:35:07" (1/1) ... [2018-04-05 15:35:07,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:35:07" (1/1) ... [2018-04-05 15:35:07,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:35:07" (1/1) ... [2018-04-05 15:35:07,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:35:07" (1/1) ... [2018-04-05 15:35:07,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-05 15:35:07,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-05 15:35:07,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-05 15:35:07,518 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-05 15:35:07,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:35:07" (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 [2018-04-05 15:35:07,859 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-05 15:35:07,859 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-05 15:35:07,859 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____bswap_32 [2018-04-05 15:35:07,859 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____bswap_64 [2018-04-05 15:35:07,859 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncat [2018-04-05 15:35:07,860 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-05 15:35:07,871 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____bswap_32 [2018-04-05 15:35:07,871 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____bswap_64 [2018-04-05 15:35:07,871 INFO L128 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-04-05 15:35:07,872 INFO L128 BoogieDeclarations]: Found specification of procedure atof [2018-04-05 15:35:07,872 INFO L128 BoogieDeclarations]: Found specification of procedure atoi [2018-04-05 15:35:07,872 INFO L128 BoogieDeclarations]: Found specification of procedure atol [2018-04-05 15:35:07,872 INFO L128 BoogieDeclarations]: Found specification of procedure atoll [2018-04-05 15:35:07,872 INFO L128 BoogieDeclarations]: Found specification of procedure strtod [2018-04-05 15:35:07,872 INFO L128 BoogieDeclarations]: Found specification of procedure strtof [2018-04-05 15:35:07,872 INFO L128 BoogieDeclarations]: Found specification of procedure strtold [2018-04-05 15:35:07,873 INFO L128 BoogieDeclarations]: Found specification of procedure strtol [2018-04-05 15:35:07,873 INFO L128 BoogieDeclarations]: Found specification of procedure strtoul [2018-04-05 15:35:07,873 INFO L128 BoogieDeclarations]: Found specification of procedure strtoq [2018-04-05 15:35:07,873 INFO L128 BoogieDeclarations]: Found specification of procedure strtouq [2018-04-05 15:35:07,873 INFO L128 BoogieDeclarations]: Found specification of procedure strtoll [2018-04-05 15:35:07,873 INFO L128 BoogieDeclarations]: Found specification of procedure strtoull [2018-04-05 15:35:07,873 INFO L128 BoogieDeclarations]: Found specification of procedure l64a [2018-04-05 15:35:07,874 INFO L128 BoogieDeclarations]: Found specification of procedure a64l [2018-04-05 15:35:07,874 INFO L128 BoogieDeclarations]: Found specification of procedure select [2018-04-05 15:35:07,874 INFO L128 BoogieDeclarations]: Found specification of procedure pselect [2018-04-05 15:35:07,874 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-04-05 15:35:07,874 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-04-05 15:35:07,874 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-04-05 15:35:07,875 INFO L128 BoogieDeclarations]: Found specification of procedure random [2018-04-05 15:35:07,880 INFO L128 BoogieDeclarations]: Found specification of procedure srandom [2018-04-05 15:35:07,880 INFO L128 BoogieDeclarations]: Found specification of procedure initstate [2018-04-05 15:35:07,880 INFO L128 BoogieDeclarations]: Found specification of procedure setstate [2018-04-05 15:35:07,880 INFO L128 BoogieDeclarations]: Found specification of procedure random_r [2018-04-05 15:35:07,880 INFO L128 BoogieDeclarations]: Found specification of procedure srandom_r [2018-04-05 15:35:07,880 INFO L128 BoogieDeclarations]: Found specification of procedure initstate_r [2018-04-05 15:35:07,881 INFO L128 BoogieDeclarations]: Found specification of procedure setstate_r [2018-04-05 15:35:07,881 INFO L128 BoogieDeclarations]: Found specification of procedure rand [2018-04-05 15:35:07,881 INFO L128 BoogieDeclarations]: Found specification of procedure srand [2018-04-05 15:35:07,881 INFO L128 BoogieDeclarations]: Found specification of procedure rand_r [2018-04-05 15:35:07,881 INFO L128 BoogieDeclarations]: Found specification of procedure drand48 [2018-04-05 15:35:07,881 INFO L128 BoogieDeclarations]: Found specification of procedure erand48 [2018-04-05 15:35:07,881 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48 [2018-04-05 15:35:07,881 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48 [2018-04-05 15:35:07,882 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48 [2018-04-05 15:35:07,882 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48 [2018-04-05 15:35:07,882 INFO L128 BoogieDeclarations]: Found specification of procedure srand48 [2018-04-05 15:35:07,882 INFO L128 BoogieDeclarations]: Found specification of procedure seed48 [2018-04-05 15:35:07,882 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48 [2018-04-05 15:35:07,882 INFO L128 BoogieDeclarations]: Found specification of procedure drand48_r [2018-04-05 15:35:07,882 INFO L128 BoogieDeclarations]: Found specification of procedure erand48_r [2018-04-05 15:35:07,883 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-04-05 15:35:07,887 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-04-05 15:35:07,887 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-04-05 15:35:07,887 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-04-05 15:35:07,887 INFO L128 BoogieDeclarations]: Found specification of procedure srand48_r [2018-04-05 15:35:07,888 INFO L128 BoogieDeclarations]: Found specification of procedure seed48_r [2018-04-05 15:35:07,888 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-04-05 15:35:07,888 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-04-05 15:35:07,888 INFO L128 BoogieDeclarations]: Found specification of procedure calloc [2018-04-05 15:35:07,888 INFO L128 BoogieDeclarations]: Found specification of procedure realloc [2018-04-05 15:35:07,888 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-04-05 15:35:07,888 INFO L128 BoogieDeclarations]: Found specification of procedure cfree [2018-04-05 15:35:07,888 INFO L128 BoogieDeclarations]: Found specification of procedure alloca [2018-04-05 15:35:07,889 INFO L128 BoogieDeclarations]: Found specification of procedure valloc [2018-04-05 15:35:07,889 INFO L128 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-04-05 15:35:07,889 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-04-05 15:35:07,889 INFO L128 BoogieDeclarations]: Found specification of procedure atexit [2018-04-05 15:35:07,889 INFO L128 BoogieDeclarations]: Found specification of procedure on_exit [2018-04-05 15:35:07,889 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-04-05 15:35:07,889 INFO L128 BoogieDeclarations]: Found specification of procedure _Exit [2018-04-05 15:35:07,889 INFO L128 BoogieDeclarations]: Found specification of procedure getenv [2018-04-05 15:35:07,890 INFO L128 BoogieDeclarations]: Found specification of procedure putenv [2018-04-05 15:35:07,890 INFO L128 BoogieDeclarations]: Found specification of procedure setenv [2018-04-05 15:35:07,890 INFO L128 BoogieDeclarations]: Found specification of procedure unsetenv [2018-04-05 15:35:07,890 INFO L128 BoogieDeclarations]: Found specification of procedure clearenv [2018-04-05 15:35:07,890 INFO L128 BoogieDeclarations]: Found specification of procedure mktemp [2018-04-05 15:35:07,890 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemp [2018-04-05 15:35:07,890 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemps [2018-04-05 15:35:07,890 INFO L128 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-04-05 15:35:07,891 INFO L128 BoogieDeclarations]: Found specification of procedure system [2018-04-05 15:35:07,906 INFO L128 BoogieDeclarations]: Found specification of procedure realpath [2018-04-05 15:35:07,906 INFO L128 BoogieDeclarations]: Found specification of procedure bsearch [2018-04-05 15:35:07,906 INFO L128 BoogieDeclarations]: Found specification of procedure qsort [2018-04-05 15:35:07,906 INFO L128 BoogieDeclarations]: Found specification of procedure abs [2018-04-05 15:35:07,906 INFO L128 BoogieDeclarations]: Found specification of procedure labs [2018-04-05 15:35:07,907 INFO L128 BoogieDeclarations]: Found specification of procedure llabs [2018-04-05 15:35:07,907 INFO L128 BoogieDeclarations]: Found specification of procedure div [2018-04-05 15:35:07,907 INFO L128 BoogieDeclarations]: Found specification of procedure ldiv [2018-04-05 15:35:07,907 INFO L128 BoogieDeclarations]: Found specification of procedure lldiv [2018-04-05 15:35:07,907 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt [2018-04-05 15:35:07,907 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt [2018-04-05 15:35:07,907 INFO L128 BoogieDeclarations]: Found specification of procedure gcvt [2018-04-05 15:35:07,907 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt [2018-04-05 15:35:07,908 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt [2018-04-05 15:35:07,908 INFO L128 BoogieDeclarations]: Found specification of procedure qgcvt [2018-04-05 15:35:07,908 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-04-05 15:35:07,908 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-04-05 15:35:07,908 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-04-05 15:35:07,908 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-04-05 15:35:07,908 INFO L128 BoogieDeclarations]: Found specification of procedure mblen [2018-04-05 15:35:07,908 INFO L128 BoogieDeclarations]: Found specification of procedure mbtowc [2018-04-05 15:35:07,909 INFO L128 BoogieDeclarations]: Found specification of procedure wctomb [2018-04-05 15:35:07,911 INFO L128 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-04-05 15:35:07,911 INFO L128 BoogieDeclarations]: Found specification of procedure wcstombs [2018-04-05 15:35:07,911 INFO L128 BoogieDeclarations]: Found specification of procedure rpmatch [2018-04-05 15:35:07,911 INFO L128 BoogieDeclarations]: Found specification of procedure getsubopt [2018-04-05 15:35:07,911 INFO L128 BoogieDeclarations]: Found specification of procedure getloadavg [2018-04-05 15:35:07,911 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-04-05 15:35:07,911 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncat [2018-04-05 15:35:07,912 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-05 15:35:07,912 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-05 15:35:07,912 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-05 15:35:07,912 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-05 15:35:07,912 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-05 15:35:07,912 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-05 15:35:07,912 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-05 15:35:07,912 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-05 15:35:09,279 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-05 15:35:09,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 03:35:09 BoogieIcfgContainer [2018-04-05 15:35:09,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-05 15:35:09,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-05 15:35:09,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-05 15:35:09,313 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-05 15:35:09,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 03:35:06" (1/3) ... [2018-04-05 15:35:09,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2558a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 03:35:09, skipping insertion in model container [2018-04-05 15:35:09,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:35:07" (2/3) ... [2018-04-05 15:35:09,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2558a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 03:35:09, skipping insertion in model container [2018-04-05 15:35:09,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 03:35:09" (3/3) ... [2018-04-05 15:35:09,326 INFO L107 eAbstractionObserver]: Analyzing ICFG cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 15:35:09,358 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-05 15:35:09,371 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-04-05 15:35:09,479 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-05 15:35:09,480 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-05 15:35:09,480 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-05 15:35:09,480 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-05 15:35:09,480 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-05 15:35:09,480 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-05 15:35:09,481 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-05 15:35:09,481 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-05 15:35:09,481 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-05 15:35:09,482 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-05 15:35:09,515 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2018-04-05 15:35:09,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-04-05 15:35:09,529 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:35:09,530 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] [2018-04-05 15:35:09,531 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:35:09,547 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 [2018-04-05 15:35:09,585 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:35:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:35:09,708 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:35:09,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:09,802 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:35:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:09,906 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:35:09,906 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-04-05 15:35:09,909 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-05 15:35:09,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-05 15:35:09,937 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-05 15:35:09,940 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 3 states. [2018-04-05 15:35:10,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:35:10,269 INFO L93 Difference]: Finished difference Result 145 states and 158 transitions. [2018-04-05 15:35:10,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-05 15:35:10,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-04-05 15:35:10,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:35:10,305 INFO L225 Difference]: With dead ends: 145 [2018-04-05 15:35:10,305 INFO L226 Difference]: Without dead ends: 92 [2018-04-05 15:35:10,320 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 [2018-04-05 15:35:10,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-04-05 15:35:10,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-04-05 15:35:10,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-04-05 15:35:10,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2018-04-05 15:35:10,452 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 21 [2018-04-05 15:35:10,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:35:10,455 INFO L459 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2018-04-05 15:35:10,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-05 15:35:10,456 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2018-04-05 15:35:10,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-05 15:35:10,457 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:35:10,457 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 15:35:10,457 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:35:10,458 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 [2018-04-05 15:35:10,488 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:35:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:35:10,546 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:35:10,614 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:35:10,618 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:10,624 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:35:10,625 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-05 15:35:10,690 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-04-05 15:35:10,691 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:10,703 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-05 15:35:10,704 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2018-04-05 15:35:10,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:10,735 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:35:10,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:10,826 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:35:10,827 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-04-05 15:35:10,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-05 15:35:10,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-05 15:35:10,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-05 15:35:10,833 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand 4 states. [2018-04-05 15:35:11,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:35:11,146 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2018-04-05 15:35:11,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-05 15:35:11,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-04-05 15:35:11,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:35:11,153 INFO L225 Difference]: With dead ends: 92 [2018-04-05 15:35:11,153 INFO L226 Difference]: Without dead ends: 91 [2018-04-05 15:35:11,154 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-05 15:35:11,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-04-05 15:35:11,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-04-05 15:35:11,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-04-05 15:35:11,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2018-04-05 15:35:11,169 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 24 [2018-04-05 15:35:11,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:35:11,174 INFO L459 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2018-04-05 15:35:11,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-05 15:35:11,174 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2018-04-05 15:35:11,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-05 15:35:11,175 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:35:11,175 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 15:35:11,176 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:35:11,176 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 [2018-04-05 15:35:11,215 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:35:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:35:11,286 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:35:11,564 WARN L148 SmtUtils]: Spent 104ms on a formula simplification that was a NOOP. DAG size: 9 [2018-04-05 15:35:11,637 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:35:11,638 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:11,858 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:35:11,858 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:11,923 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:35:11,923 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:25 [2018-04-05 15:35:12,090 WARN L148 SmtUtils]: Spent 100ms on a formula simplification that was a NOOP. DAG size: 19 [2018-04-05 15:35:12,181 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:35:12,193 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:35:12,195 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 [2018-04-05 15:35:12,196 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:12,299 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:35:12,304 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:35:12,305 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-05 15:35:12,305 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:12,378 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. [2018-04-05 15:35:12,378 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:36, output treesize:24 [2018-04-05 15:35:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:12,480 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:35:12,971 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 [2018-04-05 15:35:12,971 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:13,041 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 [2018-04-05 15:35:13,210 WARN L151 SmtUtils]: Spent 167ms on a formula simplification. DAG size of input: 18 DAG size of output 12 [2018-04-05 15:35:13,219 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 [2018-04-05 15:35:13,219 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:13,267 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:35:13,312 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:35:13,312 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:29, output treesize:9 [2018-04-05 15:35:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:13,731 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:35:13,731 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2018-04-05 15:35:13,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-04-05 15:35:13,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-04-05 15:35:13,732 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-04-05 15:35:13,733 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand 13 states. [2018-04-05 15:35:14,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:35:14,725 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2018-04-05 15:35:14,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-05 15:35:14,726 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-04-05 15:35:14,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:35:14,730 INFO L225 Difference]: With dead ends: 91 [2018-04-05 15:35:14,730 INFO L226 Difference]: Without dead ends: 90 [2018-04-05 15:35:14,731 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-04-05 15:35:14,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-04-05 15:35:14,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-04-05 15:35:14,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-04-05 15:35:14,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2018-04-05 15:35:14,764 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 24 [2018-04-05 15:35:14,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:35:14,765 INFO L459 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2018-04-05 15:35:14,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-04-05 15:35:14,765 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2018-04-05 15:35:14,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-04-05 15:35:14,766 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:35:14,766 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] [2018-04-05 15:35:14,766 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:35:14,767 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 [2018-04-05 15:35:14,786 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:35:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:35:14,845 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:35:14,857 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:35:14,857 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:14,861 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:35:14,861 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-05 15:35:14,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:14,897 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:35:14,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:14,949 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:35:14,949 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-04-05 15:35:14,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-05 15:35:14,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-05 15:35:14,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-05 15:35:14,950 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand 4 states. [2018-04-05 15:35:15,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:35:15,190 INFO L93 Difference]: Finished difference Result 90 states and 96 transitions. [2018-04-05 15:35:15,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-05 15:35:15,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-04-05 15:35:15,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:35:15,192 INFO L225 Difference]: With dead ends: 90 [2018-04-05 15:35:15,192 INFO L226 Difference]: Without dead ends: 89 [2018-04-05 15:35:15,193 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 [2018-04-05 15:35:15,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-04-05 15:35:15,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-04-05 15:35:15,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-04-05 15:35:15,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2018-04-05 15:35:15,212 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 25 [2018-04-05 15:35:15,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:35:15,212 INFO L459 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2018-04-05 15:35:15,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-05 15:35:15,212 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2018-04-05 15:35:15,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-04-05 15:35:15,213 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:35:15,213 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] [2018-04-05 15:35:15,214 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:35:15,219 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 [2018-04-05 15:35:15,253 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:35:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:35:15,280 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:35:15,313 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:35:15,313 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:15,338 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:35:15,339 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-04-05 15:35:15,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:15,418 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:35:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:15,603 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:35:15,604 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2018-04-05 15:35:15,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-05 15:35:15,604 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-05 15:35:15,605 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-04-05 15:35:15,605 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand 7 states. [2018-04-05 15:35:16,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:35:16,393 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2018-04-05 15:35:16,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-05 15:35:16,394 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-04-05 15:35:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:35:16,395 INFO L225 Difference]: With dead ends: 89 [2018-04-05 15:35:16,396 INFO L226 Difference]: Without dead ends: 88 [2018-04-05 15:35:16,396 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-04-05 15:35:16,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-04-05 15:35:16,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-04-05 15:35:16,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-04-05 15:35:16,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2018-04-05 15:35:16,442 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 25 [2018-04-05 15:35:16,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:35:16,443 INFO L459 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2018-04-05 15:35:16,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-05 15:35:16,443 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2018-04-05 15:35:16,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-04-05 15:35:16,444 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:35:16,444 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 15:35:16,444 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:35:16,446 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 [2018-04-05 15:35:16,476 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:35:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:35:16,550 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:35:16,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:16,647 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:35:16,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:16,746 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:35:16,746 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2018-04-05 15:35:16,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-05 15:35:16,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-05 15:35:16,747 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-04-05 15:35:16,747 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand 6 states. [2018-04-05 15:35:17,155 WARN L148 SmtUtils]: Spent 186ms on a formula simplification that was a NOOP. DAG size: 12 [2018-04-05 15:35:17,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:35:17,428 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2018-04-05 15:35:17,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-05 15:35:17,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2018-04-05 15:35:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:35:17,430 INFO L225 Difference]: With dead ends: 118 [2018-04-05 15:35:17,431 INFO L226 Difference]: Without dead ends: 114 [2018-04-05 15:35:17,431 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-04-05 15:35:17,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-04-05 15:35:17,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 101. [2018-04-05 15:35:17,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-04-05 15:35:17,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 114 transitions. [2018-04-05 15:35:17,466 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 114 transitions. Word has length 32 [2018-04-05 15:35:17,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:35:17,473 INFO L459 AbstractCegarLoop]: Abstraction has 101 states and 114 transitions. [2018-04-05 15:35:17,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-05 15:35:17,473 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 114 transitions. [2018-04-05 15:35:17,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-04-05 15:35:17,474 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:35:17,474 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 15:35:17,475 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:35:17,475 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 [2018-04-05 15:35:17,497 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:35:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:35:17,548 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:35:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:17,972 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:35:18,018 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 [2018-04-05 15:35:18,020 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:18,076 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 [2018-04-05 15:35:18,077 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:18,095 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:35:18,096 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:7 [2018-04-05 15:35:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:18,273 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:35:18,273 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2018-04-05 15:35:18,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-04-05 15:35:18,274 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-04-05 15:35:18,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-04-05 15:35:18,275 INFO L87 Difference]: Start difference. First operand 101 states and 114 transitions. Second operand 10 states. [2018-04-05 15:35:19,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:35:19,300 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2018-04-05 15:35:19,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-05 15:35:19,300 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2018-04-05 15:35:19,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:35:19,301 INFO L225 Difference]: With dead ends: 114 [2018-04-05 15:35:19,301 INFO L226 Difference]: Without dead ends: 110 [2018-04-05 15:35:19,302 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-04-05 15:35:19,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-04-05 15:35:19,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 100. [2018-04-05 15:35:19,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-04-05 15:35:19,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2018-04-05 15:35:19,311 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 32 [2018-04-05 15:35:19,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:35:19,312 INFO L459 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2018-04-05 15:35:19,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-04-05 15:35:19,313 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2018-04-05 15:35:19,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-04-05 15:35:19,315 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:35:19,315 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] [2018-04-05 15:35:19,315 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:35:19,315 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 [2018-04-05 15:35:19,333 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:35:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:35:19,399 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:35:19,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-05 15:35:19,531 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:35:19,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-05 15:35:19,589 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:35:19,589 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2018-04-05 15:35:19,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-05 15:35:19,591 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-05 15:35:19,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-04-05 15:35:19,591 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 7 states. [2018-04-05 15:35:20,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:35:20,078 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2018-04-05 15:35:20,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-05 15:35:20,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-04-05 15:35:20,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:35:20,080 INFO L225 Difference]: With dead ends: 110 [2018-04-05 15:35:20,080 INFO L226 Difference]: Without dead ends: 109 [2018-04-05 15:35:20,081 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-04-05 15:35:20,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-04-05 15:35:20,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2018-04-05 15:35:20,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-04-05 15:35:20,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2018-04-05 15:35:20,107 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 39 [2018-04-05 15:35:20,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:35:20,108 INFO L459 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2018-04-05 15:35:20,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-05 15:35:20,108 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2018-04-05 15:35:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-04-05 15:35:20,109 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:35:20,109 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] [2018-04-05 15:35:20,110 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:35:20,115 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 [2018-04-05 15:35:20,143 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:35:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:35:20,194 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:35:20,480 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:35:20,480 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:20,528 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:35:20,528 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:20,566 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:35:20,566 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2018-04-05 15:35:20,702 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:35:20,708 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:35:20,709 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-05 15:35:20,709 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:20,763 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:35:20,764 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 [2018-04-05 15:35:20,765 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:20,830 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:35:20,831 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:18 [2018-04-05 15:35:21,199 WARN L148 SmtUtils]: Spent 213ms on a formula simplification that was a NOOP. DAG size: 13 [2018-04-05 15:35:21,377 WARN L148 SmtUtils]: Spent 127ms on a formula simplification that was a NOOP. DAG size: 15 [2018-04-05 15:35:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:21,999 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:35:22,989 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 [2018-04-05 15:35:22,989 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:23,006 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2018-04-05 15:35:23,073 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 [2018-04-05 15:35:23,074 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:23,084 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-04-05 15:35:23,084 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:23,103 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:35:23,127 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:35:23,128 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:21, output treesize:3 [2018-04-05 15:35:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:23,463 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:35:23,464 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2018-04-05 15:35:23,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-04-05 15:35:23,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-04-05 15:35:23,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2018-04-05 15:35:23,465 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand 24 states. [2018-04-05 15:35:27,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:35:27,835 INFO L93 Difference]: Finished difference Result 183 states and 199 transitions. [2018-04-05 15:35:27,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-05 15:35:27,836 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 39 [2018-04-05 15:35:27,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:35:27,843 INFO L225 Difference]: With dead ends: 183 [2018-04-05 15:35:27,843 INFO L226 Difference]: Without dead ends: 182 [2018-04-05 15:35:27,844 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=197, Invalid=1063, Unknown=0, NotChecked=0, Total=1260 [2018-04-05 15:35:27,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-04-05 15:35:27,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 106. [2018-04-05 15:35:27,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-04-05 15:35:27,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2018-04-05 15:35:27,886 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 39 [2018-04-05 15:35:27,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:35:27,886 INFO L459 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2018-04-05 15:35:27,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-04-05 15:35:27,887 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2018-04-05 15:35:27,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-04-05 15:35:27,900 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:35:27,900 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] [2018-04-05 15:35:27,900 INFO L408 AbstractCegarLoop]: === Iteration 10 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:35:27,901 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 [2018-04-05 15:35:27,939 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:35:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:35:28,022 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:35:28,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:28,151 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:35:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:28,237 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:35:28,237 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2018-04-05 15:35:28,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-05 15:35:28,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-05 15:35:28,238 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-04-05 15:35:28,238 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand 6 states. [2018-04-05 15:35:28,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:35:28,592 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2018-04-05 15:35:28,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-05 15:35:28,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2018-04-05 15:35:28,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:35:28,594 INFO L225 Difference]: With dead ends: 111 [2018-04-05 15:35:28,594 INFO L226 Difference]: Without dead ends: 110 [2018-04-05 15:35:28,595 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-04-05 15:35:28,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-04-05 15:35:28,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 105. [2018-04-05 15:35:28,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-04-05 15:35:28,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2018-04-05 15:35:28,636 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 40 [2018-04-05 15:35:28,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:35:28,637 INFO L459 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2018-04-05 15:35:28,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-05 15:35:28,637 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2018-04-05 15:35:28,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-04-05 15:35:28,638 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:35:28,638 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] [2018-04-05 15:35:28,638 INFO L408 AbstractCegarLoop]: === Iteration 11 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:35:28,658 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 [2018-04-05 15:35:28,689 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:35:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:35:28,753 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:35:29,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:29,077 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:35:29,110 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 [2018-04-05 15:35:29,111 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:29,162 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 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 [2018-04-05 15:35:29,163 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:29,192 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:35:29,192 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2018-04-05 15:35:29,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:29,328 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:35:29,328 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2018-04-05 15:35:29,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-05 15:35:29,328 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-05 15:35:29,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-04-05 15:35:29,329 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand 9 states. [2018-04-05 15:35:30,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:35:30,571 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2018-04-05 15:35:30,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-05 15:35:30,572 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2018-04-05 15:35:30,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:35:30,573 INFO L225 Difference]: With dead ends: 142 [2018-04-05 15:35:30,573 INFO L226 Difference]: Without dead ends: 141 [2018-04-05 15:35:30,574 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-04-05 15:35:30,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-04-05 15:35:30,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 122. [2018-04-05 15:35:30,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-04-05 15:35:30,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 134 transitions. [2018-04-05 15:35:30,599 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 134 transitions. Word has length 40 [2018-04-05 15:35:30,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:35:30,600 INFO L459 AbstractCegarLoop]: Abstraction has 122 states and 134 transitions. [2018-04-05 15:35:30,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-05 15:35:30,600 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 134 transitions. [2018-04-05 15:35:30,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-04-05 15:35:30,607 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:35:30,607 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] [2018-04-05 15:35:30,607 INFO L408 AbstractCegarLoop]: === Iteration 12 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:35:30,607 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 [2018-04-05 15:35:30,630 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:35:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:35:30,694 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:35:30,831 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:35:30,832 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:30,869 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:35:30,870 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2018-04-05 15:35:31,030 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:35:31,041 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:35:31,042 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-05 15:35:31,042 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:31,071 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:35:31,072 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:13 [2018-04-05 15:35:31,446 WARN L148 SmtUtils]: Spent 103ms on a formula simplification that was a NOOP. DAG size: 12 [2018-04-05 15:35:31,465 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 [2018-04-05 15:35:31,504 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 [2018-04-05 15:35:31,505 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:31,512 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:35:31,574 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-05 15:35:31,574 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:39, output treesize:35 [2018-04-05 15:35:31,662 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 29 [2018-04-05 15:35:31,670 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-04-05 15:35:31,672 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:31,695 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:35:31,741 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. [2018-04-05 15:35:31,741 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:49, output treesize:45 [2018-04-05 15:35:32,662 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 [2018-04-05 15:35:32,669 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2018-04-05 15:35:32,670 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:32,721 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:35:32,757 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 [2018-04-05 15:35:32,758 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-04-05 15:35:32,851 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:35:32,981 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:35:32,982 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:70, output treesize:43 [2018-04-05 15:35:33,262 WARN L151 SmtUtils]: Spent 194ms on a formula simplification. DAG size of input: 18 DAG size of output 17 [2018-04-05 15:35:33,626 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:33,627 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:35:35,809 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 [2018-04-05 15:35:35,809 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:35,863 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 [2018-04-05 15:35:35,981 WARN L151 SmtUtils]: Spent 117ms on a formula simplification. DAG size of input: 23 DAG size of output 19 [2018-04-05 15:35:35,994 INFO L682 Elim1Store]: detected equality via solver [2018-04-05 15:35:36,015 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 [2018-04-05 15:35:36,015 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-05 15:35:36,075 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:35:36,121 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. [2018-04-05 15:35:36,121 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:58, output treesize:14 [2018-04-05 15:35:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:35:36,681 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:35:36,681 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 34 [2018-04-05 15:35:36,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-04-05 15:35:36,682 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-04-05 15:35:36,682 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1064, Unknown=0, NotChecked=0, Total=1190 [2018-04-05 15:35:36,683 INFO L87 Difference]: Start difference. First operand 122 states and 134 transitions. Second operand 35 states. [2018-04-05 15:35:39,462 WARN L151 SmtUtils]: Spent 132ms on a formula simplification. DAG size of input: 72 DAG size of output 62 [2018-04-05 15:35:50,246 WARN L151 SmtUtils]: Spent 171ms on a formula simplification. DAG size of input: 83 DAG size of output 69 [2018-04-05 15:35:56,915 WARN L151 SmtUtils]: Spent 6398ms on a formula simplification. DAG size of input: 79 DAG size of output 72 [2018-04-05 15:36:05,923 WARN L151 SmtUtils]: Spent 8181ms on a formula simplification. DAG size of input: 77 DAG size of output 73 [2018-04-05 15:36:10,589 WARN L151 SmtUtils]: Spent 4532ms on a formula simplification. DAG size of input: 97 DAG size of output 86 [2018-04-05 15:36:15,139 WARN L151 SmtUtils]: Spent 264ms on a formula simplification. DAG size of input: 91 DAG size of output 85 [2018-04-05 15:36:18,474 WARN L151 SmtUtils]: Spent 113ms on a formula simplification. DAG size of input: 71 DAG size of output 68 [2018-04-05 15:36:19,852 WARN L151 SmtUtils]: Spent 530ms on a formula simplification. DAG size of input: 84 DAG size of output 70 [2018-04-05 15:36:25,805 WARN L151 SmtUtils]: Spent 3320ms on a formula simplification. DAG size of input: 82 DAG size of output 73 [2018-04-05 15:36:31,872 WARN L151 SmtUtils]: Spent 4909ms on a formula simplification. DAG size of input: 80 DAG size of output 70 [2018-04-05 15:36:33,096 WARN L151 SmtUtils]: Spent 878ms on a formula simplification. DAG size of input: 100 DAG size of output 87 [2018-04-05 15:36:33,739 WARN L151 SmtUtils]: Spent 164ms on a formula simplification. DAG size of input: 27 DAG size of output 24 [2018-04-05 15:36:39,728 WARN L148 SmtUtils]: Spent 152ms on a formula simplification that was a NOOP. DAG size: 40 [2018-04-05 15:36:41,009 WARN L148 SmtUtils]: Spent 183ms on a formula simplification that was a NOOP. DAG size: 34 [2018-04-05 15:36:45,493 WARN L148 SmtUtils]: Spent 103ms on a formula simplification that was a NOOP. DAG size: 31 [2018-04-05 15:36:48,043 WARN L151 SmtUtils]: Spent 182ms on a formula simplification. DAG size of input: 27 DAG size of output 24 [2018-04-05 15:36:48,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:36:48,184 INFO L93 Difference]: Finished difference Result 260 states and 282 transitions. [2018-04-05 15:36:48,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-04-05 15:36:48,185 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 46 [2018-04-05 15:36:48,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:36:48,188 INFO L225 Difference]: With dead ends: 260 [2018-04-05 15:36:48,188 INFO L226 Difference]: Without dead ends: 259 [2018-04-05 15:36:48,196 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 56.1s TimeCoverageRelationStatistics Valid=689, Invalid=3594, Unknown=7, NotChecked=0, Total=4290 [2018-04-05 15:36:48,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-04-05 15:36:48,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 112. [2018-04-05 15:36:48,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-04-05 15:36:48,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2018-04-05 15:36:48,220 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 46 [2018-04-05 15:36:48,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:36:48,223 INFO L459 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2018-04-05 15:36:48,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-04-05 15:36:48,224 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2018-04-05 15:36:48,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-04-05 15:36:48,225 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:36:48,225 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] [2018-04-05 15:36:48,225 INFO L408 AbstractCegarLoop]: === Iteration 13 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:36:48,225 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 [2018-04-05 15:36:48,248 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:36:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:36:48,317 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:36:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:36:48,533 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:36:48,648 WARN L151 SmtUtils]: Spent 113ms on a formula simplification. DAG size of input: 12 DAG size of output 8 [2018-04-05 15:36:48,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:36:48,981 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:36:48,981 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2018-04-05 15:36:48,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-05 15:36:48,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-05 15:36:48,982 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-04-05 15:36:48,983 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand 7 states. [2018-04-05 15:36:49,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:36:49,375 INFO L93 Difference]: Finished difference Result 193 states and 210 transitions. [2018-04-05 15:36:49,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-05 15:36:49,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2018-04-05 15:36:49,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:36:49,377 INFO L225 Difference]: With dead ends: 193 [2018-04-05 15:36:49,377 INFO L226 Difference]: Without dead ends: 163 [2018-04-05 15:36:49,378 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-04-05 15:36:49,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-04-05 15:36:49,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 135. [2018-04-05 15:36:49,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-04-05 15:36:49,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 151 transitions. [2018-04-05 15:36:49,416 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 151 transitions. Word has length 54 [2018-04-05 15:36:49,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:36:49,417 INFO L459 AbstractCegarLoop]: Abstraction has 135 states and 151 transitions. [2018-04-05 15:36:49,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-05 15:36:49,417 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 151 transitions. [2018-04-05 15:36:49,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-04-05 15:36:49,420 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:36:49,420 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] [2018-04-05 15:36:49,420 INFO L408 AbstractCegarLoop]: === Iteration 14 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:36:49,420 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 [2018-04-05 15:36:49,446 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:36:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:36:49,494 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:36:49,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:36:49,545 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:36:49,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:36:49,670 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:36:49,670 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-04-05 15:36:49,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-05 15:36:49,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-05 15:36:49,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-05 15:36:49,671 INFO L87 Difference]: Start difference. First operand 135 states and 151 transitions. Second operand 3 states. [2018-04-05 15:36:49,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:36:49,728 INFO L93 Difference]: Finished difference Result 182 states and 201 transitions. [2018-04-05 15:36:49,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-05 15:36:49,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2018-04-05 15:36:49,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:36:49,733 INFO L225 Difference]: With dead ends: 182 [2018-04-05 15:36:49,734 INFO L226 Difference]: Without dead ends: 95 [2018-04-05 15:36:49,735 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 [2018-04-05 15:36:49,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-04-05 15:36:49,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-04-05 15:36:49,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-04-05 15:36:49,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2018-04-05 15:36:49,760 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 54 [2018-04-05 15:36:49,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:36:49,767 INFO L459 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2018-04-05 15:36:49,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-05 15:36:49,767 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2018-04-05 15:36:49,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-04-05 15:36:49,768 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:36:49,768 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] [2018-04-05 15:36:49,769 INFO L408 AbstractCegarLoop]: === Iteration 15 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:36:49,769 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 [2018-04-05 15:36:49,807 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:36:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:36:49,866 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:36:49,921 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-04-05 15:36:49,929 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-04-05 15:36:49,930 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:36:49,952 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:36:49,984 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-05 15:36:49,984 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2018-04-05 15:36:50,341 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 [2018-04-05 15:36:50,382 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 [2018-04-05 15:36:50,383 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-05 15:36:50,401 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:36:50,455 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:36:50,456 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:29 [2018-04-05 15:36:50,696 WARN L151 SmtUtils]: Spent 191ms on a formula simplification. DAG size of input: 15 DAG size of output 15 [2018-04-05 15:36:50,933 WARN L151 SmtUtils]: Spent 157ms on a formula simplification. DAG size of input: 15 DAG size of output 14 [2018-04-05 15:36:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:36:51,129 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:36:52,530 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 [2018-04-05 15:36:52,531 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:36:52,628 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 [2018-04-05 15:36:52,702 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 [2018-04-05 15:36:52,702 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-05 15:36:52,709 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:36:52,747 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. [2018-04-05 15:36:52,747 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:35, output treesize:7 [2018-04-05 15:36:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:36:52,864 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:36:52,864 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-04-05 15:36:52,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-04-05 15:36:52,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-04-05 15:36:52,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2018-04-05 15:36:52,870 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand 21 states. [2018-04-05 15:36:54,130 WARN L151 SmtUtils]: Spent 183ms on a formula simplification. DAG size of input: 51 DAG size of output 47 [2018-04-05 15:36:54,715 WARN L151 SmtUtils]: Spent 217ms on a formula simplification. DAG size of input: 48 DAG size of output 45 [2018-04-05 15:36:55,556 WARN L151 SmtUtils]: Spent 542ms on a formula simplification. DAG size of input: 36 DAG size of output 31 [2018-04-05 15:36:56,146 WARN L151 SmtUtils]: Spent 426ms on a formula simplification. DAG size of input: 40 DAG size of output 34 [2018-04-05 15:36:56,407 WARN L151 SmtUtils]: Spent 129ms on a formula simplification. DAG size of input: 25 DAG size of output 24 [2018-04-05 15:36:57,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:36:57,657 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2018-04-05 15:36:57,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-04-05 15:36:57,657 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2018-04-05 15:36:57,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:36:57,659 INFO L225 Difference]: With dead ends: 139 [2018-04-05 15:36:57,659 INFO L226 Difference]: Without dead ends: 138 [2018-04-05 15:36:57,660 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2018-04-05 15:36:57,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-04-05 15:36:57,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 112. [2018-04-05 15:36:57,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-04-05 15:36:57,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 120 transitions. [2018-04-05 15:36:57,689 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 120 transitions. Word has length 58 [2018-04-05 15:36:57,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:36:57,690 INFO L459 AbstractCegarLoop]: Abstraction has 112 states and 120 transitions. [2018-04-05 15:36:57,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-04-05 15:36:57,690 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 120 transitions. [2018-04-05 15:36:57,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-04-05 15:36:57,691 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:36:57,691 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] [2018-04-05 15:36:57,691 INFO L408 AbstractCegarLoop]: === Iteration 16 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:36:57,691 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 [2018-04-05 15:36:57,724 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:36:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:36:57,769 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:36:57,916 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:36:57,917 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2018-04-05 15:36:57,929 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:36:57,930 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-04-05 15:36:57,931 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:36:57,963 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:36:57,992 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-05 15:36:57,993 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-04-05 15:36:58,118 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 [2018-04-05 15:36:58,140 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 [2018-04-05 15:36:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:36:58,174 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:36:58,377 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 [2018-04-05 15:36:58,396 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 [2018-04-05 15:36:58,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:36:58,611 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:36:58,612 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-04-05 15:36:58,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-05 15:36:58,612 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-05 15:36:58,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-04-05 15:36:58,613 INFO L87 Difference]: Start difference. First operand 112 states and 120 transitions. Second operand 12 states. [2018-04-05 15:36:58,707 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 [2018-04-05 15:37:00,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:37:00,515 INFO L93 Difference]: Finished difference Result 205 states and 220 transitions. [2018-04-05 15:37:00,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-05 15:37:00,516 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2018-04-05 15:37:00,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:37:00,517 INFO L225 Difference]: With dead ends: 205 [2018-04-05 15:37:00,517 INFO L226 Difference]: Without dead ends: 186 [2018-04-05 15:37:00,518 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-04-05 15:37:00,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-04-05 15:37:00,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2018-04-05 15:37:00,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-04-05 15:37:00,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 198 transitions. [2018-04-05 15:37:00,567 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 198 transitions. Word has length 59 [2018-04-05 15:37:00,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:37:00,567 INFO L459 AbstractCegarLoop]: Abstraction has 181 states and 198 transitions. [2018-04-05 15:37:00,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-05 15:37:00,567 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 198 transitions. [2018-04-05 15:37:00,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-04-05 15:37:00,580 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:37:00,580 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] [2018-04-05 15:37:00,580 INFO L408 AbstractCegarLoop]: === Iteration 17 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:37:00,580 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 [2018-04-05 15:37:00,614 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:37:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:37:00,645 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:37:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-04-05 15:37:00,897 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:37:00,940 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-04-05 15:37:01,005 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:37:01,005 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2018-04-05 15:37:01,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-05 15:37:01,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-05 15:37:01,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-04-05 15:37:01,006 INFO L87 Difference]: Start difference. First operand 181 states and 198 transitions. Second operand 7 states. [2018-04-05 15:37:01,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:37:01,838 INFO L93 Difference]: Finished difference Result 185 states and 202 transitions. [2018-04-05 15:37:01,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-05 15:37:01,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2018-04-05 15:37:01,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:37:01,839 INFO L225 Difference]: With dead ends: 185 [2018-04-05 15:37:01,840 INFO L226 Difference]: Without dead ends: 183 [2018-04-05 15:37:01,840 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-04-05 15:37:01,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-04-05 15:37:01,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-04-05 15:37:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-04-05 15:37:01,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 194 transitions. [2018-04-05 15:37:01,906 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 194 transitions. Word has length 59 [2018-04-05 15:37:01,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:37:01,907 INFO L459 AbstractCegarLoop]: Abstraction has 179 states and 194 transitions. [2018-04-05 15:37:01,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-05 15:37:01,907 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 194 transitions. [2018-04-05 15:37:01,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-04-05 15:37:01,908 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:37:01,908 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] [2018-04-05 15:37:01,908 INFO L408 AbstractCegarLoop]: === Iteration 18 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:37:01,908 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 [2018-04-05 15:37:01,934 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:37:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:37:01,987 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:37:02,027 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:37:02,027 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:37:02,039 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:37:02,040 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:7 [2018-04-05 15:37:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:37:03,367 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:37:06,445 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:37:06,481 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:37:06,481 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2018-04-05 15:37:06,481 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-04-05 15:37:06,487 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-04-05 15:37:06,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2018-04-05 15:37:06,492 INFO L87 Difference]: Start difference. First operand 179 states and 194 transitions. Second operand 34 states. [2018-04-05 15:37:11,138 WARN L151 SmtUtils]: Spent 142ms on a formula simplification. DAG size of input: 42 DAG size of output 38 [2018-04-05 15:37:11,622 WARN L151 SmtUtils]: Spent 175ms on a formula simplification. DAG size of input: 45 DAG size of output 41 [2018-04-05 15:37:12,243 WARN L151 SmtUtils]: Spent 305ms on a formula simplification. DAG size of input: 52 DAG size of output 47 [2018-04-05 15:37:12,532 WARN L151 SmtUtils]: Spent 102ms on a formula simplification. DAG size of input: 30 DAG size of output 28 [2018-04-05 15:37:12,787 WARN L151 SmtUtils]: Spent 157ms on a formula simplification. DAG size of input: 43 DAG size of output 39 [2018-04-05 15:37:13,646 WARN L151 SmtUtils]: Spent 235ms on a formula simplification. DAG size of input: 52 DAG size of output 49 [2018-04-05 15:37:15,089 WARN L151 SmtUtils]: Spent 278ms on a formula simplification. DAG size of input: 44 DAG size of output 39 [2018-04-05 15:37:15,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:37:15,097 INFO L93 Difference]: Finished difference Result 335 states and 366 transitions. [2018-04-05 15:37:15,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-04-05 15:37:15,098 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 59 [2018-04-05 15:37:15,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:37:15,100 INFO L225 Difference]: With dead ends: 335 [2018-04-05 15:37:15,100 INFO L226 Difference]: Without dead ends: 334 [2018-04-05 15:37:15,101 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=523, Invalid=3259, Unknown=0, NotChecked=0, Total=3782 [2018-04-05 15:37:15,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-04-05 15:37:15,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 273. [2018-04-05 15:37:15,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-04-05 15:37:15,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 298 transitions. [2018-04-05 15:37:15,177 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 298 transitions. Word has length 59 [2018-04-05 15:37:15,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:37:15,192 INFO L459 AbstractCegarLoop]: Abstraction has 273 states and 298 transitions. [2018-04-05 15:37:15,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-04-05 15:37:15,192 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 298 transitions. [2018-04-05 15:37:15,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-04-05 15:37:15,193 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:37:15,194 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] [2018-04-05 15:37:15,194 INFO L408 AbstractCegarLoop]: === Iteration 19 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:37:15,194 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 [2018-04-05 15:37:15,219 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:37:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:37:15,295 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:37:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:37:15,413 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:37:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:37:15,660 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:37:15,660 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-04-05 15:37:15,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-05 15:37:15,661 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-05 15:37:15,661 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-04-05 15:37:15,661 INFO L87 Difference]: Start difference. First operand 273 states and 298 transitions. Second operand 7 states. [2018-04-05 15:37:15,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:37:15,882 INFO L93 Difference]: Finished difference Result 412 states and 449 transitions. [2018-04-05 15:37:15,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-05 15:37:15,882 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2018-04-05 15:37:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:37:15,884 INFO L225 Difference]: With dead ends: 412 [2018-04-05 15:37:15,884 INFO L226 Difference]: Without dead ends: 271 [2018-04-05 15:37:15,885 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-04-05 15:37:15,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-04-05 15:37:15,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-04-05 15:37:15,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-04-05 15:37:15,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 294 transitions. [2018-04-05 15:37:15,945 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 294 transitions. Word has length 60 [2018-04-05 15:37:15,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:37:15,945 INFO L459 AbstractCegarLoop]: Abstraction has 271 states and 294 transitions. [2018-04-05 15:37:15,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-05 15:37:15,945 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 294 transitions. [2018-04-05 15:37:15,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-04-05 15:37:15,946 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:37:15,946 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] [2018-04-05 15:37:15,947 INFO L408 AbstractCegarLoop]: === Iteration 20 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:37:15,955 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 [2018-04-05 15:37:16,016 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:37:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:37:16,093 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:37:16,259 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:37:16,260 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-04-05 15:37:16,268 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-04-05 15:37:16,268 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:37:16,296 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:37:16,326 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-05 15:37:16,327 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-04-05 15:37:16,429 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 [2018-04-05 15:37:16,441 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 [2018-04-05 15:37:16,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:37:16,465 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:37:16,605 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 [2018-04-05 15:37:16,638 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 [2018-04-05 15:37:16,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:37:16,822 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:37:16,822 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-04-05 15:37:16,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-05 15:37:16,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-05 15:37:16,823 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-04-05 15:37:16,824 INFO L87 Difference]: Start difference. First operand 271 states and 294 transitions. Second operand 12 states. [2018-04-05 15:37:16,909 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 [2018-04-05 15:37:19,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:37:19,651 INFO L93 Difference]: Finished difference Result 407 states and 441 transitions. [2018-04-05 15:37:19,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-05 15:37:19,651 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2018-04-05 15:37:19,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:37:19,654 INFO L225 Difference]: With dead ends: 407 [2018-04-05 15:37:19,654 INFO L226 Difference]: Without dead ends: 388 [2018-04-05 15:37:19,654 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 109 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-04-05 15:37:19,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-04-05 15:37:19,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 270. [2018-04-05 15:37:19,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-04-05 15:37:19,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 292 transitions. [2018-04-05 15:37:19,717 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 292 transitions. Word has length 60 [2018-04-05 15:37:19,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:37:19,717 INFO L459 AbstractCegarLoop]: Abstraction has 270 states and 292 transitions. [2018-04-05 15:37:19,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-05 15:37:19,717 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 292 transitions. [2018-04-05 15:37:19,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-04-05 15:37:19,718 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:37:19,718 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] [2018-04-05 15:37:19,718 INFO L408 AbstractCegarLoop]: === Iteration 21 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:37:19,718 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 [2018-04-05 15:37:19,782 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:37:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:37:19,825 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:37:20,068 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:37:20,069 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-04-05 15:37:20,084 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-04-05 15:37:20,084 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:37:20,129 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:37:20,177 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-05 15:37:20,178 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-04-05 15:37:20,320 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 [2018-04-05 15:37:20,345 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 [2018-04-05 15:37:20,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:37:20,364 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:37:20,551 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 [2018-04-05 15:37:20,580 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 [2018-04-05 15:37:20,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:37:20,717 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:37:20,717 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-04-05 15:37:20,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-05 15:37:20,718 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-05 15:37:20,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-04-05 15:37:20,718 INFO L87 Difference]: Start difference. First operand 270 states and 292 transitions. Second operand 12 states. [2018-04-05 15:37:20,796 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 [2018-04-05 15:37:23,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:37:23,499 INFO L93 Difference]: Finished difference Result 408 states and 442 transitions. [2018-04-05 15:37:23,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-05 15:37:23,499 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2018-04-05 15:37:23,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:37:23,501 INFO L225 Difference]: With dead ends: 408 [2018-04-05 15:37:23,501 INFO L226 Difference]: Without dead ends: 389 [2018-04-05 15:37:23,502 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 109 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-04-05 15:37:23,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-04-05 15:37:23,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 272. [2018-04-05 15:37:23,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2018-04-05 15:37:23,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 295 transitions. [2018-04-05 15:37:23,545 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 295 transitions. Word has length 60 [2018-04-05 15:37:23,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:37:23,545 INFO L459 AbstractCegarLoop]: Abstraction has 272 states and 295 transitions. [2018-04-05 15:37:23,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-05 15:37:23,546 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 295 transitions. [2018-04-05 15:37:23,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-04-05 15:37:23,547 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:37:23,547 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] [2018-04-05 15:37:23,547 INFO L408 AbstractCegarLoop]: === Iteration 22 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:37:23,547 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 [2018-04-05 15:37:23,592 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:37:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:37:23,632 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:37:23,918 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:37:23,919 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:37:24,048 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:37:24,049 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:37:24,193 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:37:24,194 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2018-04-05 15:37:24,556 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:37:24,563 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:37:24,564 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 [2018-04-05 15:37:24,564 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:37:24,696 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:37:24,730 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:37:24,731 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-05 15:37:24,731 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:37:24,816 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:37:24,816 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:18 [2018-04-05 15:37:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:37:25,858 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:37:27,020 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 [2018-04-05 15:37:27,020 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:37:27,043 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 [2018-04-05 15:37:27,111 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-04-05 15:37:27,111 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-05 15:37:27,113 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 [2018-04-05 15:37:27,114 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-05 15:37:27,151 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:37:27,170 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:37:27,171 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:21, output treesize:3 [2018-04-05 15:37:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:37:27,547 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:37:27,547 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2018-04-05 15:37:27,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-04-05 15:37:27,548 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-04-05 15:37:27,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2018-04-05 15:37:27,548 INFO L87 Difference]: Start difference. First operand 272 states and 295 transitions. Second operand 26 states. [2018-04-05 15:37:28,352 WARN L148 SmtUtils]: Spent 137ms on a formula simplification that was a NOOP. DAG size: 26 [2018-04-05 15:37:28,616 WARN L148 SmtUtils]: Spent 108ms on a formula simplification that was a NOOP. DAG size: 31 [2018-04-05 15:37:31,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:37:31,600 INFO L93 Difference]: Finished difference Result 311 states and 336 transitions. [2018-04-05 15:37:31,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-04-05 15:37:31,604 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 60 [2018-04-05 15:37:31,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:37:31,611 INFO L225 Difference]: With dead ends: 311 [2018-04-05 15:37:31,611 INFO L226 Difference]: Without dead ends: 305 [2018-04-05 15:37:31,612 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=220, Invalid=1262, Unknown=0, NotChecked=0, Total=1482 [2018-04-05 15:37:31,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-04-05 15:37:31,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 273. [2018-04-05 15:37:31,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-04-05 15:37:31,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 295 transitions. [2018-04-05 15:37:31,665 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 295 transitions. Word has length 60 [2018-04-05 15:37:31,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:37:31,666 INFO L459 AbstractCegarLoop]: Abstraction has 273 states and 295 transitions. [2018-04-05 15:37:31,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-04-05 15:37:31,666 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 295 transitions. [2018-04-05 15:37:31,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-04-05 15:37:31,667 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:37:31,667 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] [2018-04-05 15:37:31,667 INFO L408 AbstractCegarLoop]: === Iteration 23 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:37:31,667 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) [2018-04-05 15:37:31,702 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 15:37:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:37:31,735 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:37:31,948 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:37:31,949 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-04-05 15:37:31,962 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-04-05 15:37:31,962 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:37:31,995 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:37:32,028 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-05 15:37:32,029 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-04-05 15:37:32,162 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 [2018-04-05 15:37:32,181 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 [2018-04-05 15:37:32,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:37:32,212 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:37:32,365 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 [2018-04-05 15:37:32,377 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 [2018-04-05 15:37:32,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:37:32,468 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:37:32,468 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-04-05 15:37:32,468 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-05 15:37:32,469 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-05 15:37:32,469 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-04-05 15:37:32,469 INFO L87 Difference]: Start difference. First operand 273 states and 295 transitions. Second operand 12 states. [2018-04-05 15:37:32,540 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 [2018-04-05 15:37:34,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:37:34,531 INFO L93 Difference]: Finished difference Result 276 states and 295 transitions. [2018-04-05 15:37:34,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-05 15:37:34,533 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 61 [2018-04-05 15:37:34,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:37:34,535 INFO L225 Difference]: With dead ends: 276 [2018-04-05 15:37:34,535 INFO L226 Difference]: Without dead ends: 256 [2018-04-05 15:37:34,536 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-04-05 15:37:34,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-04-05 15:37:34,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 137. [2018-04-05 15:37:34,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-04-05 15:37:34,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 144 transitions. [2018-04-05 15:37:34,563 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 144 transitions. Word has length 61 [2018-04-05 15:37:34,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:37:34,563 INFO L459 AbstractCegarLoop]: Abstraction has 137 states and 144 transitions. [2018-04-05 15:37:34,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-05 15:37:34,564 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 144 transitions. [2018-04-05 15:37:34,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-04-05 15:37:34,564 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:37:34,565 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] [2018-04-05 15:37:34,585 INFO L408 AbstractCegarLoop]: === Iteration 24 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:37:34,585 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 [2018-04-05 15:37:34,602 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:37:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:37:34,664 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:37:34,717 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:37:34,718 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:37:34,760 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:37:34,761 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:37:34,804 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:37:34,805 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2018-04-05 15:37:34,986 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:37:34,992 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:37:34,993 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 [2018-04-05 15:37:34,993 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:37:35,065 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:37:35,072 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:37:35,073 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-05 15:37:35,073 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:37:35,109 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:37:35,110 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:16 [2018-04-05 15:37:35,378 WARN L148 SmtUtils]: Spent 135ms on a formula simplification that was a NOOP. DAG size: 14 [2018-04-05 15:37:35,769 WARN L148 SmtUtils]: Spent 198ms on a formula simplification that was a NOOP. DAG size: 14 [2018-04-05 15:37:36,918 WARN L148 SmtUtils]: Spent 118ms on a formula simplification that was a NOOP. DAG size: 15 [2018-04-05 15:37:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:37:38,486 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:37:42,444 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 [2018-04-05 15:37:42,445 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:37:42,485 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 [2018-04-05 15:37:42,578 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 [2018-04-05 15:37:42,579 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-05 15:37:42,588 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-04-05 15:37:42,588 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-05 15:37:42,609 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:37:42,675 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:37:42,676 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:24, output treesize:7 [2018-04-05 15:37:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:37:43,036 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:37:43,036 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21] total 43 [2018-04-05 15:37:43,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-04-05 15:37:43,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-04-05 15:37:43,037 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1757, Unknown=0, NotChecked=0, Total=1892 [2018-04-05 15:37:43,038 INFO L87 Difference]: Start difference. First operand 137 states and 144 transitions. Second operand 44 states. [2018-04-05 15:37:43,366 WARN L148 SmtUtils]: Spent 117ms on a formula simplification that was a NOOP. DAG size: 33 [2018-04-05 15:37:47,352 WARN L148 SmtUtils]: Spent 143ms on a formula simplification that was a NOOP. DAG size: 41 [2018-04-05 15:37:47,959 WARN L148 SmtUtils]: Spent 185ms on a formula simplification that was a NOOP. DAG size: 39 [2018-04-05 15:37:48,783 WARN L151 SmtUtils]: Spent 395ms on a formula simplification. DAG size of input: 51 DAG size of output 48 [2018-04-05 15:37:49,297 WARN L151 SmtUtils]: Spent 291ms on a formula simplification. DAG size of input: 46 DAG size of output 42 [2018-04-05 15:37:49,656 WARN L151 SmtUtils]: Spent 187ms on a formula simplification. DAG size of input: 36 DAG size of output 35 [2018-04-05 15:37:50,171 WARN L151 SmtUtils]: Spent 305ms on a formula simplification. DAG size of input: 44 DAG size of output 40 [2018-04-05 15:37:50,761 WARN L151 SmtUtils]: Spent 225ms on a formula simplification. DAG size of input: 39 DAG size of output 36 [2018-04-05 15:37:51,208 WARN L151 SmtUtils]: Spent 287ms on a formula simplification. DAG size of input: 40 DAG size of output 39 [2018-04-05 15:37:51,662 WARN L151 SmtUtils]: Spent 242ms on a formula simplification. DAG size of input: 41 DAG size of output 40 [2018-04-05 15:37:52,421 WARN L151 SmtUtils]: Spent 313ms on a formula simplification. DAG size of input: 42 DAG size of output 41 [2018-04-05 15:37:52,983 WARN L151 SmtUtils]: Spent 306ms on a formula simplification. DAG size of input: 48 DAG size of output 45 [2018-04-05 15:37:53,315 WARN L148 SmtUtils]: Spent 115ms on a formula simplification that was a NOOP. DAG size: 42 [2018-04-05 15:37:54,111 WARN L151 SmtUtils]: Spent 278ms on a formula simplification. DAG size of input: 35 DAG size of output 34 [2018-04-05 15:37:54,978 WARN L151 SmtUtils]: Spent 515ms on a formula simplification. DAG size of input: 39 DAG size of output 38 [2018-04-05 15:37:55,372 WARN L151 SmtUtils]: Spent 204ms on a formula simplification. DAG size of input: 35 DAG size of output 34 [2018-04-05 15:37:55,691 WARN L148 SmtUtils]: Spent 144ms on a formula simplification that was a NOOP. DAG size: 38 [2018-04-05 15:37:55,963 WARN L151 SmtUtils]: Spent 167ms on a formula simplification. DAG size of input: 33 DAG size of output 32 [2018-04-05 15:37:56,360 WARN L151 SmtUtils]: Spent 219ms on a formula simplification. DAG size of input: 39 DAG size of output 38 [2018-04-05 15:37:56,734 WARN L148 SmtUtils]: Spent 116ms on a formula simplification that was a NOOP. DAG size: 37 [2018-04-05 15:37:57,753 WARN L151 SmtUtils]: Spent 249ms on a formula simplification. DAG size of input: 45 DAG size of output 42 [2018-04-05 15:37:58,243 WARN L151 SmtUtils]: Spent 262ms on a formula simplification. DAG size of input: 48 DAG size of output 45 [2018-04-05 15:37:58,951 WARN L151 SmtUtils]: Spent 429ms on a formula simplification. DAG size of input: 70 DAG size of output 60 [2018-04-05 15:37:59,261 WARN L151 SmtUtils]: Spent 204ms on a formula simplification. DAG size of input: 46 DAG size of output 43 [2018-04-05 15:37:59,860 WARN L151 SmtUtils]: Spent 292ms on a formula simplification. DAG size of input: 55 DAG size of output 52 [2018-04-05 15:38:00,411 WARN L151 SmtUtils]: Spent 220ms on a formula simplification. DAG size of input: 47 DAG size of output 42 [2018-04-05 15:38:00,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:38:00,412 INFO L93 Difference]: Finished difference Result 210 states and 220 transitions. [2018-04-05 15:38:00,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-04-05 15:38:00,413 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 66 [2018-04-05 15:38:00,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:38:00,414 INFO L225 Difference]: With dead ends: 210 [2018-04-05 15:38:00,414 INFO L226 Difference]: Without dead ends: 209 [2018-04-05 15:38:00,416 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=861, Invalid=6795, Unknown=0, NotChecked=0, Total=7656 [2018-04-05 15:38:00,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-04-05 15:38:00,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 166. [2018-04-05 15:38:00,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-04-05 15:38:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 175 transitions. [2018-04-05 15:38:00,476 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 175 transitions. Word has length 66 [2018-04-05 15:38:00,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:38:00,476 INFO L459 AbstractCegarLoop]: Abstraction has 166 states and 175 transitions. [2018-04-05 15:38:00,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-04-05 15:38:00,477 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 175 transitions. [2018-04-05 15:38:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-04-05 15:38:00,478 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:38:00,478 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] [2018-04-05 15:38:00,478 INFO L408 AbstractCegarLoop]: === Iteration 25 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:38:00,478 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 [2018-04-05 15:38:00,528 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:38:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:38:00,591 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:38:00,731 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:38:00,732 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:38:00,788 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:38:00,789 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:38:00,827 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:38:00,828 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2018-04-05 15:38:01,010 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:38:01,015 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:38:01,016 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-05 15:38:01,016 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:38:01,064 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:38:01,065 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 [2018-04-05 15:38:01,065 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:38:01,113 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:38:01,114 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:19 [2018-04-05 15:38:01,290 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-04-05 15:38:01,297 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-04-05 15:38:01,297 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:38:01,311 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:38:01,346 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:38:01,346 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:34, output treesize:30 [2018-04-05 15:38:02,278 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 [2018-04-05 15:38:02,320 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 [2018-04-05 15:38:02,321 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-05 15:38:02,341 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:38:02,397 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. [2018-04-05 15:38:02,398 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:55 [2018-04-05 15:38:02,887 WARN L151 SmtUtils]: Spent 187ms on a formula simplification. DAG size of input: 38 DAG size of output 28 [2018-04-05 15:38:03,441 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:38:03,442 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:38:05,999 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 [2018-04-05 15:38:06,100 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 [2018-04-05 15:38:06,101 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:38:06,108 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:38:06,143 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:38:06,143 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:14 [2018-04-05 15:38:06,940 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 [2018-04-05 15:38:06,941 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:38:06,967 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 [2018-04-05 15:38:07,028 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-04-05 15:38:07,028 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-05 15:38:07,034 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 [2018-04-05 15:38:07,072 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-05 15:38:07,090 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:38:07,117 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:38:07,118 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:24, output treesize:7 [2018-04-05 15:38:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:38:07,595 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:38:07,595 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 41 [2018-04-05 15:38:07,595 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-04-05 15:38:07,596 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-04-05 15:38:07,596 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1590, Unknown=0, NotChecked=0, Total=1722 [2018-04-05 15:38:07,596 INFO L87 Difference]: Start difference. First operand 166 states and 175 transitions. Second operand 42 states. [2018-04-05 15:38:08,060 WARN L148 SmtUtils]: Spent 169ms on a formula simplification that was a NOOP. DAG size: 42 [2018-04-05 15:38:08,521 WARN L148 SmtUtils]: Spent 138ms on a formula simplification that was a NOOP. DAG size: 40 [2018-04-05 15:38:09,571 WARN L148 SmtUtils]: Spent 218ms on a formula simplification that was a NOOP. DAG size: 40 [2018-04-05 15:38:10,385 WARN L148 SmtUtils]: Spent 128ms on a formula simplification that was a NOOP. DAG size: 38 [2018-04-05 15:38:11,860 WARN L151 SmtUtils]: Spent 202ms on a formula simplification. DAG size of input: 42 DAG size of output 40 [2018-04-05 15:38:13,284 WARN L148 SmtUtils]: Spent 114ms on a formula simplification that was a NOOP. DAG size: 47 [2018-04-05 15:38:13,588 WARN L148 SmtUtils]: Spent 132ms on a formula simplification that was a NOOP. DAG size: 47 [2018-04-05 15:38:13,934 WARN L148 SmtUtils]: Spent 162ms on a formula simplification that was a NOOP. DAG size: 41 [2018-04-05 15:38:14,292 WARN L151 SmtUtils]: Spent 138ms on a formula simplification. DAG size of input: 35 DAG size of output 32 [2018-04-05 15:38:14,775 WARN L151 SmtUtils]: Spent 166ms on a formula simplification. DAG size of input: 34 DAG size of output 30 [2018-04-05 15:38:15,203 WARN L148 SmtUtils]: Spent 124ms on a formula simplification that was a NOOP. DAG size: 51 [2018-04-05 15:38:16,279 WARN L151 SmtUtils]: Spent 389ms on a formula simplification. DAG size of input: 56 DAG size of output 49 [2018-04-05 15:38:16,780 WARN L151 SmtUtils]: Spent 320ms on a formula simplification. DAG size of input: 57 DAG size of output 50 [2018-04-05 15:38:17,508 WARN L151 SmtUtils]: Spent 430ms on a formula simplification. DAG size of input: 71 DAG size of output 62 [2018-04-05 15:38:17,842 WARN L151 SmtUtils]: Spent 186ms on a formula simplification. DAG size of input: 41 DAG size of output 38 [2018-04-05 15:38:18,145 WARN L148 SmtUtils]: Spent 126ms on a formula simplification that was a NOOP. DAG size: 50 [2018-04-05 15:38:19,490 WARN L148 SmtUtils]: Spent 114ms on a formula simplification that was a NOOP. DAG size: 47 [2018-04-05 15:38:19,820 WARN L148 SmtUtils]: Spent 104ms on a formula simplification that was a NOOP. DAG size: 47 [2018-04-05 15:38:20,405 WARN L151 SmtUtils]: Spent 243ms on a formula simplification. DAG size of input: 47 DAG size of output 44 [2018-04-05 15:38:21,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:38:21,242 INFO L93 Difference]: Finished difference Result 194 states and 203 transitions. [2018-04-05 15:38:21,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-04-05 15:38:21,244 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 67 [2018-04-05 15:38:21,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:38:21,245 INFO L225 Difference]: With dead ends: 194 [2018-04-05 15:38:21,245 INFO L226 Difference]: Without dead ends: 188 [2018-04-05 15:38:21,253 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1165 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=625, Invalid=5227, Unknown=0, NotChecked=0, Total=5852 [2018-04-05 15:38:21,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-04-05 15:38:21,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 144. [2018-04-05 15:38:21,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-04-05 15:38:21,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2018-04-05 15:38:21,292 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 67 [2018-04-05 15:38:21,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:38:21,292 INFO L459 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2018-04-05 15:38:21,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-04-05 15:38:21,292 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2018-04-05 15:38:21,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-04-05 15:38:21,293 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:38:21,293 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] [2018-04-05 15:38:21,293 INFO L408 AbstractCegarLoop]: === Iteration 26 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:38:21,294 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 [2018-04-05 15:38:21,330 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:38:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:38:21,383 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:38:21,451 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:38:21,452 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:38:21,505 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:38:21,506 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:38:21,546 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:38:21,547 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2018-04-05 15:38:21,670 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:38:21,676 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:38:21,677 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 [2018-04-05 15:38:21,677 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:38:21,750 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:38:21,754 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:38:21,755 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-05 15:38:21,755 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:38:21,797 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:38:21,798 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:16 [2018-04-05 15:38:24,418 WARN L151 SmtUtils]: Spent 148ms on a formula simplification. DAG size of input: 23 DAG size of output 22 [2018-04-05 15:38:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:38:24,973 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:38:29,411 WARN L151 SmtUtils]: Spent 151ms on a formula simplification. DAG size of input: 23 DAG size of output 18 [2018-04-05 15:38:31,455 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 [2018-04-05 15:38:31,456 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:38:31,496 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 [2018-04-05 15:38:31,556 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 [2018-04-05 15:38:31,557 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-05 15:38:31,558 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-04-05 15:38:31,558 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-05 15:38:31,573 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:38:31,603 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:38:31,603 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:27, output treesize:10 [2018-04-05 15:38:31,899 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:38:31,947 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:38:31,947 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2018-04-05 15:38:31,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-04-05 15:38:31,948 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-04-05 15:38:31,948 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2797, Unknown=0, NotChecked=0, Total=2970 [2018-04-05 15:38:31,949 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand 55 states. [2018-04-05 15:38:32,293 WARN L148 SmtUtils]: Spent 120ms on a formula simplification that was a NOOP. DAG size: 37 [2018-04-05 15:38:32,931 WARN L148 SmtUtils]: Spent 123ms on a formula simplification that was a NOOP. DAG size: 38 [2018-04-05 15:38:33,434 WARN L148 SmtUtils]: Spent 217ms on a formula simplification that was a NOOP. DAG size: 48 [2018-04-05 15:38:34,366 WARN L148 SmtUtils]: Spent 178ms on a formula simplification that was a NOOP. DAG size: 48 [2018-04-05 15:38:38,855 WARN L148 SmtUtils]: Spent 132ms on a formula simplification that was a NOOP. DAG size: 41 [2018-04-05 15:38:39,604 WARN L148 SmtUtils]: Spent 207ms on a formula simplification that was a NOOP. DAG size: 39 [2018-04-05 15:38:40,667 WARN L151 SmtUtils]: Spent 537ms on a formula simplification. DAG size of input: 54 DAG size of output 50 [2018-04-05 15:38:41,638 WARN L151 SmtUtils]: Spent 509ms on a formula simplification. DAG size of input: 50 DAG size of output 45 [2018-04-05 15:38:42,139 WARN L151 SmtUtils]: Spent 228ms on a formula simplification. DAG size of input: 36 DAG size of output 35 [2018-04-05 15:38:42,931 WARN L151 SmtUtils]: Spent 516ms on a formula simplification. DAG size of input: 46 DAG size of output 42 [2018-04-05 15:38:43,543 WARN L151 SmtUtils]: Spent 253ms on a formula simplification. DAG size of input: 42 DAG size of output 41 [2018-04-05 15:38:44,162 WARN L148 SmtUtils]: Spent 161ms on a formula simplification that was a NOOP. DAG size: 40 [2018-04-05 15:38:44,482 WARN L148 SmtUtils]: Spent 104ms on a formula simplification that was a NOOP. DAG size: 34 [2018-04-05 15:38:45,230 WARN L151 SmtUtils]: Spent 505ms on a formula simplification. DAG size of input: 41 DAG size of output 38 [2018-04-05 15:38:46,002 WARN L151 SmtUtils]: Spent 551ms on a formula simplification. DAG size of input: 55 DAG size of output 50 [2018-04-05 15:38:46,573 WARN L151 SmtUtils]: Spent 208ms on a formula simplification. DAG size of input: 37 DAG size of output 36 [2018-04-05 15:38:47,288 WARN L151 SmtUtils]: Spent 391ms on a formula simplification. DAG size of input: 45 DAG size of output 41 [2018-04-05 15:38:48,009 WARN L151 SmtUtils]: Spent 350ms on a formula simplification. DAG size of input: 42 DAG size of output 39 [2018-04-05 15:38:48,469 WARN L151 SmtUtils]: Spent 253ms on a formula simplification. DAG size of input: 38 DAG size of output 36 [2018-04-05 15:38:49,365 WARN L151 SmtUtils]: Spent 370ms on a formula simplification. DAG size of input: 47 DAG size of output 45 [2018-04-05 15:38:50,196 WARN L148 SmtUtils]: Spent 336ms on a formula simplification that was a NOOP. DAG size: 44 [2018-04-05 15:38:50,661 WARN L148 SmtUtils]: Spent 112ms on a formula simplification that was a NOOP. DAG size: 34 [2018-04-05 15:38:51,082 WARN L151 SmtUtils]: Spent 209ms on a formula simplification. DAG size of input: 41 DAG size of output 40 [2018-04-05 15:38:51,546 WARN L151 SmtUtils]: Spent 206ms on a formula simplification. DAG size of input: 42 DAG size of output 41 [2018-04-05 15:38:52,202 WARN L148 SmtUtils]: Spent 221ms on a formula simplification that was a NOOP. DAG size: 38 [2018-04-05 15:38:52,638 WARN L151 SmtUtils]: Spent 223ms on a formula simplification. DAG size of input: 43 DAG size of output 42 [2018-04-05 15:38:53,115 WARN L148 SmtUtils]: Spent 263ms on a formula simplification that was a NOOP. DAG size: 32 [2018-04-05 15:38:53,588 WARN L148 SmtUtils]: Spent 106ms on a formula simplification that was a NOOP. DAG size: 38 [2018-04-05 15:38:54,256 WARN L151 SmtUtils]: Spent 194ms on a formula simplification. DAG size of input: 36 DAG size of output 35 [2018-04-05 15:38:54,704 WARN L151 SmtUtils]: Spent 205ms on a formula simplification. DAG size of input: 40 DAG size of output 39 [2018-04-05 15:38:55,458 WARN L151 SmtUtils]: Spent 211ms on a formula simplification. DAG size of input: 40 DAG size of output 39 [2018-04-05 15:38:56,390 WARN L151 SmtUtils]: Spent 452ms on a formula simplification. DAG size of input: 36 DAG size of output 35 [2018-04-05 15:38:56,858 WARN L151 SmtUtils]: Spent 230ms on a formula simplification. DAG size of input: 42 DAG size of output 41 [2018-04-05 15:38:57,318 WARN L148 SmtUtils]: Spent 113ms on a formula simplification that was a NOOP. DAG size: 40 [2018-04-05 15:38:58,076 WARN L151 SmtUtils]: Spent 220ms on a formula simplification. DAG size of input: 42 DAG size of output 39 [2018-04-05 15:38:59,238 WARN L148 SmtUtils]: Spent 353ms on a formula simplification that was a NOOP. DAG size: 36 [2018-04-05 15:38:59,854 WARN L148 SmtUtils]: Spent 120ms on a formula simplification that was a NOOP. DAG size: 42 [2018-04-05 15:39:00,454 WARN L151 SmtUtils]: Spent 317ms on a formula simplification. DAG size of input: 55 DAG size of output 43 [2018-04-05 15:39:01,019 WARN L151 SmtUtils]: Spent 336ms on a formula simplification. DAG size of input: 58 DAG size of output 46 [2018-04-05 15:39:02,126 WARN L151 SmtUtils]: Spent 407ms on a formula simplification. DAG size of input: 52 DAG size of output 49 [2018-04-05 15:39:02,808 WARN L151 SmtUtils]: Spent 327ms on a formula simplification. DAG size of input: 56 DAG size of output 44 [2018-04-05 15:39:03,792 WARN L151 SmtUtils]: Spent 455ms on a formula simplification. DAG size of input: 65 DAG size of output 55 [2018-04-05 15:39:04,625 WARN L151 SmtUtils]: Spent 371ms on a formula simplification. DAG size of input: 49 DAG size of output 44 [2018-04-05 15:39:04,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:39:04,626 INFO L93 Difference]: Finished difference Result 225 states and 236 transitions. [2018-04-05 15:39:04,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-04-05 15:39:04,626 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 73 [2018-04-05 15:39:04,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:39:04,628 INFO L225 Difference]: With dead ends: 225 [2018-04-05 15:39:04,628 INFO L226 Difference]: Without dead ends: 224 [2018-04-05 15:39:04,631 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=1316, Invalid=11566, Unknown=0, NotChecked=0, Total=12882 [2018-04-05 15:39:04,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-04-05 15:39:04,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 173. [2018-04-05 15:39:04,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-04-05 15:39:04,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 183 transitions. [2018-04-05 15:39:04,662 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 183 transitions. Word has length 73 [2018-04-05 15:39:04,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:39:04,676 INFO L459 AbstractCegarLoop]: Abstraction has 173 states and 183 transitions. [2018-04-05 15:39:04,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-04-05 15:39:04,676 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 183 transitions. [2018-04-05 15:39:04,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-04-05 15:39:04,677 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:39:04,677 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] [2018-04-05 15:39:04,677 INFO L408 AbstractCegarLoop]: === Iteration 27 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-05 15:39:04,678 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 [2018-04-05 15:39:04,706 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:39:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:39:04,744 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:39:04,748 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:39:04,749 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:39:04,787 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:39:04,788 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:39:04,819 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:39:04,819 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-04-05 15:39:04,917 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:39:04,927 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-05 15:39:04,927 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:39:04,993 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:39:04,998 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 15:39:04,999 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-05 15:39:04,999 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:39:05,037 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:39:05,038 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-04-05 15:39:05,176 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 [2018-04-05 15:39:05,183 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 [2018-04-05 15:39:05,184 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:39:05,193 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:39:05,220 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:39:05,220 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2018-04-05 15:39:05,314 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 [2018-04-05 15:39:05,317 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-04-05 15:39:05,318 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:39:05,351 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:39:05,383 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-05 15:39:05,384 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:35, output treesize:31 [2018-04-05 15:39:06,262 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2018-04-05 15:39:06,309 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2018-04-05 15:39:06,310 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-05 15:39:06,360 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2018-04-05 15:39:06,362 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-05 15:39:06,382 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:39:06,420 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:39:06,421 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:41, output treesize:23 [2018-04-05 15:39:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:39:07,976 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:39:08,937 WARN L148 SmtUtils]: Spent 102ms on a formula simplification that was a NOOP. DAG size: 15 [2018-04-05 15:39:11,374 WARN L148 SmtUtils]: Spent 129ms on a formula simplification that was a NOOP. DAG size: 36 [2018-04-05 15:39:11,834 WARN L148 SmtUtils]: Spent 147ms on a formula simplification that was a NOOP. DAG size: 36 [2018-04-05 15:39:12,330 WARN L151 SmtUtils]: Spent 151ms on a formula simplification. DAG size of input: 34 DAG size of output 23 [2018-04-05 15:39:14,366 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 [2018-04-05 15:39:14,459 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 [2018-04-05 15:39:14,464 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:39:14,475 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:39:14,506 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:39:14,506 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:35 [2018-04-05 15:39:14,814 WARN L151 SmtUtils]: Spent 103ms on a formula simplification. DAG size of input: 18 DAG size of output 16 [2018-04-05 15:39:17,297 WARN L148 SmtUtils]: Spent 2032ms on a formula simplification that was a NOOP. DAG size: 34 [2018-04-05 15:39:19,728 WARN L148 SmtUtils]: Spent 2062ms on a formula simplification that was a NOOP. DAG size: 34 [2018-04-05 15:39:19,827 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:39:19,863 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:39:19,863 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 47 [2018-04-05 15:39:19,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-04-05 15:39:19,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-04-05 15:39:19,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2102, Unknown=0, NotChecked=0, Total=2256 [2018-04-05 15:39:19,865 INFO L87 Difference]: Start difference. First operand 173 states and 183 transitions. Second operand 48 states. [2018-04-05 15:39:21,625 WARN L148 SmtUtils]: Spent 101ms on a formula simplification that was a NOOP. DAG size: 46 [2018-04-05 15:39:25,983 WARN L148 SmtUtils]: Spent 4037ms on a formula simplification that was a NOOP. DAG size: 34 [2018-04-05 15:39:30,251 WARN L148 SmtUtils]: Spent 4044ms on a formula simplification that was a NOOP. DAG size: 39 [2018-04-05 15:39:36,588 WARN L148 SmtUtils]: Spent 6119ms on a formula simplification that was a NOOP. DAG size: 49 [2018-04-05 15:39:42,602 WARN L151 SmtUtils]: Spent 5778ms on a formula simplification. DAG size of input: 69 DAG size of output 58 [2018-04-05 15:39:55,135 WARN L151 SmtUtils]: Spent 12252ms on a formula simplification. DAG size of input: 67 DAG size of output 64 [2018-04-05 15:40:06,675 WARN L151 SmtUtils]: Spent 9321ms on a formula simplification. DAG size of input: 54 DAG size of output 50 [2018-04-05 15:40:29,100 WARN L151 SmtUtils]: Spent 22185ms on a formula simplification. DAG size of input: 88 DAG size of output 78 [2018-04-05 15:40:47,049 WARN L151 SmtUtils]: Spent 16398ms on a formula simplification. DAG size of input: 86 DAG size of output 80