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/count_down-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8168ed2-m [2018-04-11 20:07:31,235 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-11 20:07:31,237 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-11 20:07:31,253 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-04-11 20:07:31,289 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 [2018-04-11 20:07:31,347 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-11 20:07:31,348 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-11 20:07:31,348 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-11 20:07:31,348 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-11 20:07:31,349 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-11 20:07:31,349 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-11 20:07:31,349 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-11 20:07:31,349 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-11 20:07:31,350 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-04-11 20:07:31,350 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-11 20:07:31,350 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-11 20:07:31,350 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-11 20:07:31,351 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-11 20:07:31,351 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-11 20:07:31,351 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-11 20:07:31,351 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-11 20:07:31,351 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-11 20:07:31,351 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-11 20:07:31,352 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-11 20:07:31,352 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-11 20:07:31,352 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-11 20:07:31,352 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-11 20:07:31,352 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-11 20:07:31,352 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-11 20:07:31,353 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-11 20:07:31,353 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-11 20:07:31,353 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-11 20:07:31,353 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-11 20:07:31,353 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-11 20:07:31,354 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-11 20:07:31,354 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-11 20:07:31,354 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-11 20:07:31,354 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:07:31,354 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-11 20:07:31,355 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-11 20:07:31,355 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-11 20:07:31,355 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-11 20:07:31,356 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-11 20:07:31,388 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-11 20:07:31,416 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-11 20:07:31,421 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-11 20:07:31,422 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-11 20:07:31,423 INFO L276 PluginConnector]: CDTParser initialized [2018-04-11 20:07:31,424 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,744 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG42a5d777a [2018-04-11 20:07:31,922 INFO L287 CDTParser]: IsIndexed: true [2018-04-11 20:07:31,923 INFO L288 CDTParser]: Found 1 translation units. [2018-04-11 20:07:31,923 INFO L168 CDTParser]: Scanning count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,934 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-11 20:07:31,934 INFO L215 ultiparseSymbolTable]: [2018-04-11 20:07:31,934 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-11 20:07:31,934 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____bswap_64 ('__bswap_64') in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,934 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____bswap_32 ('__bswap_32') in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,935 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,935 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-11 20:07:31,935 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__time_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,935 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__fsblkcnt_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,935 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____suseconds_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,935 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____uint32_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,935 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____int32_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,935 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__div_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,935 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__pthread_rwlock_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,936 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__fd_set in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,936 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__lldiv_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,936 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__pthread_mutex_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,936 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____u_short in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,936 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____rlim_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,936 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____fsblkcnt_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,936 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__int16_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,936 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__mode_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,936 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__uid_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,936 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____dev_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,936 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__key_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,937 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____time_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,937 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____timer_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,937 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__u_quad_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,937 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____u_char in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,937 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____off64_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,937 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____syscall_ulong_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,937 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____id_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,937 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__u_int in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,937 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__u_int64_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,938 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____rlim64_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,938 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____blksize_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,938 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__int8_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,938 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____fsfilcnt_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,938 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____qaddr_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,938 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__pthread_mutexattr_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,938 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____nlink_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,938 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__pthread_rwlockattr_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,939 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____blkcnt64_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,939 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__ldiv_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,939 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__int32_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,939 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__u_int32_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,939 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__ino_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,939 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__fsfilcnt_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,939 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____fsfilcnt64_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,940 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__register_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,940 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____ssize_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,940 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__timer_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,940 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__pthread_barrierattr_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,940 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____uid_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,940 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__pthread_key_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,940 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____off_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,941 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__fd_mask in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,941 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____uint64_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,941 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__ssize_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,941 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____fsword_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,941 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__nlink_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,941 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__sigset_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,941 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__uint in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,941 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__id_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,941 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____ino64_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,941 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____uint8_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,942 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____key_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,942 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____u_int in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,942 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__u_int8_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,942 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__u_int16_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,942 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__pthread_condattr_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,942 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__dev_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,942 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____clock_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,942 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__wchar_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,942 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____blkcnt_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,943 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__pthread_cond_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,943 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____loff_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,943 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__fsid_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,943 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__quad_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,943 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____useconds_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,943 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____fd_mask in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,943 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__clockid_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,943 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____clockid_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,943 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__suseconds_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,943 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____syscall_slong_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,943 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____sig_atomic_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,943 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__pthread_attr_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,943 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__pthread_barrier_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,943 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____WAIT_STATUS in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,944 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____gid_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,944 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____int64_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,944 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__ushort in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,944 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__pthread_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,944 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____u_quad_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,944 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____quad_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,944 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____fsblkcnt64_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,944 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__int64_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,944 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____uint16_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,944 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__loff_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,944 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____daddr_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,944 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____pid_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,945 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____int16_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,945 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__u_short in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,945 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__u_char in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,945 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__off_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,945 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__ulong in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,945 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__gid_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,945 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____u_long in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,945 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____socklen_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,945 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__clock_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,945 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__pid_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,945 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__blkcnt_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,946 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__daddr_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,946 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____int8_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,946 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____pthread_list_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,946 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____caddr_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,946 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__size_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,946 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__pthread_once_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,946 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__u_long in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,946 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____intptr_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,947 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____fsid_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,947 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____mode_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,947 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__blksize_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,947 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__pthread_spinlock_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,947 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i__caddr_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,947 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____ino_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,947 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____sigset_t in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:31,979 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG42a5d777a [2018-04-11 20:07:31,984 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-11 20:07:31,985 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-11 20:07:31,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-11 20:07:31,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-11 20:07:31,991 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-11 20:07:31,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 08:07:31" (1/1) ... [2018-04-11 20:07:31,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b66258c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:07:31, skipping insertion in model container [2018-04-11 20:07:31,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 08:07:31" (1/1) ... [2018-04-11 20:07:32,008 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 20:07:32,037 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 20:07:32,199 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 20:07:32,247 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 20:07:32,254 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 111 non ball SCCs. Number of states in SCCs 111. [2018-04-11 20:07:32,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:07:32 WrapperNode [2018-04-11 20:07:32,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-11 20:07:32,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-11 20:07:32,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-11 20:07:32,292 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-11 20:07:32,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:07:32" (1/1) ... [2018-04-11 20:07:32,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:07:32" (1/1) ... [2018-04-11 20:07:32,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:07:32" (1/1) ... [2018-04-11 20:07:32,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:07:32" (1/1) ... [2018-04-11 20:07:32,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:07:32" (1/1) ... [2018-04-11 20:07:32,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:07:32" (1/1) ... [2018-04-11 20:07:32,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:07:32" (1/1) ... [2018-04-11 20:07:32,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-11 20:07:32,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-11 20:07:32,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-11 20:07:32,346 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-11 20:07:32,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:07:32" (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 [2018-04-11 20:07:32,478 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-11 20:07:32,478 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-11 20:07:32,479 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____bswap_32 [2018-04-11 20:07:32,479 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____bswap_64 [2018-04-11 20:07:32,479 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-11 20:07:32,479 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____bswap_32 [2018-04-11 20:07:32,479 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____bswap_64 [2018-04-11 20:07:32,479 INFO L128 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-04-11 20:07:32,479 INFO L128 BoogieDeclarations]: Found specification of procedure atof [2018-04-11 20:07:32,479 INFO L128 BoogieDeclarations]: Found specification of procedure atoi [2018-04-11 20:07:32,480 INFO L128 BoogieDeclarations]: Found specification of procedure atol [2018-04-11 20:07:32,480 INFO L128 BoogieDeclarations]: Found specification of procedure atoll [2018-04-11 20:07:32,480 INFO L128 BoogieDeclarations]: Found specification of procedure strtod [2018-04-11 20:07:32,480 INFO L128 BoogieDeclarations]: Found specification of procedure strtof [2018-04-11 20:07:32,480 INFO L128 BoogieDeclarations]: Found specification of procedure strtold [2018-04-11 20:07:32,480 INFO L128 BoogieDeclarations]: Found specification of procedure strtol [2018-04-11 20:07:32,480 INFO L128 BoogieDeclarations]: Found specification of procedure strtoul [2018-04-11 20:07:32,481 INFO L128 BoogieDeclarations]: Found specification of procedure strtoq [2018-04-11 20:07:32,481 INFO L128 BoogieDeclarations]: Found specification of procedure strtouq [2018-04-11 20:07:32,481 INFO L128 BoogieDeclarations]: Found specification of procedure strtoll [2018-04-11 20:07:32,481 INFO L128 BoogieDeclarations]: Found specification of procedure strtoull [2018-04-11 20:07:32,481 INFO L128 BoogieDeclarations]: Found specification of procedure l64a [2018-04-11 20:07:32,481 INFO L128 BoogieDeclarations]: Found specification of procedure a64l [2018-04-11 20:07:32,481 INFO L128 BoogieDeclarations]: Found specification of procedure select [2018-04-11 20:07:32,482 INFO L128 BoogieDeclarations]: Found specification of procedure pselect [2018-04-11 20:07:32,482 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-04-11 20:07:32,482 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-04-11 20:07:32,482 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-04-11 20:07:32,482 INFO L128 BoogieDeclarations]: Found specification of procedure random [2018-04-11 20:07:32,482 INFO L128 BoogieDeclarations]: Found specification of procedure srandom [2018-04-11 20:07:32,482 INFO L128 BoogieDeclarations]: Found specification of procedure initstate [2018-04-11 20:07:32,483 INFO L128 BoogieDeclarations]: Found specification of procedure setstate [2018-04-11 20:07:32,483 INFO L128 BoogieDeclarations]: Found specification of procedure random_r [2018-04-11 20:07:32,483 INFO L128 BoogieDeclarations]: Found specification of procedure srandom_r [2018-04-11 20:07:32,483 INFO L128 BoogieDeclarations]: Found specification of procedure initstate_r [2018-04-11 20:07:32,483 INFO L128 BoogieDeclarations]: Found specification of procedure setstate_r [2018-04-11 20:07:32,483 INFO L128 BoogieDeclarations]: Found specification of procedure rand [2018-04-11 20:07:32,483 INFO L128 BoogieDeclarations]: Found specification of procedure srand [2018-04-11 20:07:32,483 INFO L128 BoogieDeclarations]: Found specification of procedure rand_r [2018-04-11 20:07:32,484 INFO L128 BoogieDeclarations]: Found specification of procedure drand48 [2018-04-11 20:07:32,484 INFO L128 BoogieDeclarations]: Found specification of procedure erand48 [2018-04-11 20:07:32,484 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48 [2018-04-11 20:07:32,484 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48 [2018-04-11 20:07:32,484 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48 [2018-04-11 20:07:32,484 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48 [2018-04-11 20:07:32,484 INFO L128 BoogieDeclarations]: Found specification of procedure srand48 [2018-04-11 20:07:32,484 INFO L128 BoogieDeclarations]: Found specification of procedure seed48 [2018-04-11 20:07:32,485 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48 [2018-04-11 20:07:32,485 INFO L128 BoogieDeclarations]: Found specification of procedure drand48_r [2018-04-11 20:07:32,485 INFO L128 BoogieDeclarations]: Found specification of procedure erand48_r [2018-04-11 20:07:32,485 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-04-11 20:07:32,485 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-04-11 20:07:32,485 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-04-11 20:07:32,485 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-04-11 20:07:32,486 INFO L128 BoogieDeclarations]: Found specification of procedure srand48_r [2018-04-11 20:07:32,486 INFO L128 BoogieDeclarations]: Found specification of procedure seed48_r [2018-04-11 20:07:32,486 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-04-11 20:07:32,486 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-04-11 20:07:32,486 INFO L128 BoogieDeclarations]: Found specification of procedure calloc [2018-04-11 20:07:32,486 INFO L128 BoogieDeclarations]: Found specification of procedure realloc [2018-04-11 20:07:32,486 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-04-11 20:07:32,486 INFO L128 BoogieDeclarations]: Found specification of procedure cfree [2018-04-11 20:07:32,487 INFO L128 BoogieDeclarations]: Found specification of procedure alloca [2018-04-11 20:07:32,487 INFO L128 BoogieDeclarations]: Found specification of procedure valloc [2018-04-11 20:07:32,487 INFO L128 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-04-11 20:07:32,487 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-04-11 20:07:32,487 INFO L128 BoogieDeclarations]: Found specification of procedure atexit [2018-04-11 20:07:32,487 INFO L128 BoogieDeclarations]: Found specification of procedure on_exit [2018-04-11 20:07:32,487 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-04-11 20:07:32,487 INFO L128 BoogieDeclarations]: Found specification of procedure _Exit [2018-04-11 20:07:32,488 INFO L128 BoogieDeclarations]: Found specification of procedure getenv [2018-04-11 20:07:32,488 INFO L128 BoogieDeclarations]: Found specification of procedure putenv [2018-04-11 20:07:32,488 INFO L128 BoogieDeclarations]: Found specification of procedure setenv [2018-04-11 20:07:32,488 INFO L128 BoogieDeclarations]: Found specification of procedure unsetenv [2018-04-11 20:07:32,488 INFO L128 BoogieDeclarations]: Found specification of procedure clearenv [2018-04-11 20:07:32,488 INFO L128 BoogieDeclarations]: Found specification of procedure mktemp [2018-04-11 20:07:32,488 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemp [2018-04-11 20:07:32,488 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemps [2018-04-11 20:07:32,489 INFO L128 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-04-11 20:07:32,489 INFO L128 BoogieDeclarations]: Found specification of procedure system [2018-04-11 20:07:32,489 INFO L128 BoogieDeclarations]: Found specification of procedure realpath [2018-04-11 20:07:32,489 INFO L128 BoogieDeclarations]: Found specification of procedure bsearch [2018-04-11 20:07:32,489 INFO L128 BoogieDeclarations]: Found specification of procedure qsort [2018-04-11 20:07:32,489 INFO L128 BoogieDeclarations]: Found specification of procedure abs [2018-04-11 20:07:32,489 INFO L128 BoogieDeclarations]: Found specification of procedure labs [2018-04-11 20:07:32,489 INFO L128 BoogieDeclarations]: Found specification of procedure llabs [2018-04-11 20:07:32,490 INFO L128 BoogieDeclarations]: Found specification of procedure div [2018-04-11 20:07:32,490 INFO L128 BoogieDeclarations]: Found specification of procedure ldiv [2018-04-11 20:07:32,490 INFO L128 BoogieDeclarations]: Found specification of procedure lldiv [2018-04-11 20:07:32,490 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt [2018-04-11 20:07:32,490 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt [2018-04-11 20:07:32,490 INFO L128 BoogieDeclarations]: Found specification of procedure gcvt [2018-04-11 20:07:32,490 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt [2018-04-11 20:07:32,491 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt [2018-04-11 20:07:32,491 INFO L128 BoogieDeclarations]: Found specification of procedure qgcvt [2018-04-11 20:07:32,491 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-04-11 20:07:32,491 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-04-11 20:07:32,491 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-04-11 20:07:32,491 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-04-11 20:07:32,491 INFO L128 BoogieDeclarations]: Found specification of procedure mblen [2018-04-11 20:07:32,491 INFO L128 BoogieDeclarations]: Found specification of procedure mbtowc [2018-04-11 20:07:32,491 INFO L128 BoogieDeclarations]: Found specification of procedure wctomb [2018-04-11 20:07:32,492 INFO L128 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-04-11 20:07:32,492 INFO L128 BoogieDeclarations]: Found specification of procedure wcstombs [2018-04-11 20:07:32,492 INFO L128 BoogieDeclarations]: Found specification of procedure rpmatch [2018-04-11 20:07:32,492 INFO L128 BoogieDeclarations]: Found specification of procedure getsubopt [2018-04-11 20:07:32,492 INFO L128 BoogieDeclarations]: Found specification of procedure getloadavg [2018-04-11 20:07:32,492 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-04-11 20:07:32,492 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-11 20:07:32,492 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-11 20:07:32,493 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-11 20:07:32,493 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-11 20:07:32,493 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-11 20:07:32,493 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-11 20:07:32,493 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-11 20:07:32,493 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-11 20:07:32,858 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-11 20:07:32,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 08:07:32 BoogieIcfgContainer [2018-04-11 20:07:32,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-11 20:07:32,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-11 20:07:32,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-11 20:07:32,862 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-11 20:07:32,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.04 08:07:31" (1/3) ... [2018-04-11 20:07:32,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9eeb4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 08:07:32, skipping insertion in model container [2018-04-11 20:07:32,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:07:32" (2/3) ... [2018-04-11 20:07:32,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9eeb4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 08:07:32, skipping insertion in model container [2018-04-11 20:07:32,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 08:07:32" (3/3) ... [2018-04-11 20:07:32,866 INFO L107 eAbstractionObserver]: Analyzing ICFG count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:07:32,875 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-11 20:07:32,882 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-04-11 20:07:32,924 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-11 20:07:32,924 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-11 20:07:32,924 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-11 20:07:32,925 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-11 20:07:32,925 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-11 20:07:32,925 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-11 20:07:32,925 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-11 20:07:32,925 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-11 20:07:32,925 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-11 20:07:32,926 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-11 20:07:32,940 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2018-04-11 20:07:32,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-04-11 20:07:32,944 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:32,945 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:07:32,945 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:32,949 INFO L82 PathProgramCache]: Analyzing trace with hash -894671567, 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 [2018-04-11 20:07:32,960 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:32,994 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:33,027 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:33,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:33,060 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:07:33,060 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2018-04-11 20:07:33,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-11 20:07:33,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-11 20:07:33,072 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-11 20:07:33,074 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 4 states. [2018-04-11 20:07:33,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:33,147 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2018-04-11 20:07:33,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-11 20:07:33,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-04-11 20:07:33,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:33,160 INFO L225 Difference]: With dead ends: 94 [2018-04-11 20:07:33,160 INFO L226 Difference]: Without dead ends: 58 [2018-04-11 20:07:33,164 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-11 20:07:33,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-04-11 20:07:33,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-04-11 20:07:33,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-04-11 20:07:33,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2018-04-11 20:07:33,200 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 20 [2018-04-11 20:07:33,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:33,201 INFO L459 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2018-04-11 20:07:33,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-11 20:07:33,201 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2018-04-11 20:07:33,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-11 20:07:33,202 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:33,202 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] [2018-04-11 20:07:33,202 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:33,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1771352951, 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 [2018-04-11 20:07:33,208 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:33,226 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:33,292 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:33,343 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:07:33,343 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-04-11 20:07:33,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-11 20:07:33,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-11 20:07:33,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-11 20:07:33,345 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 5 states. [2018-04-11 20:07:33,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:33,386 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2018-04-11 20:07:33,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-11 20:07:33,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-04-11 20:07:33,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:33,388 INFO L225 Difference]: With dead ends: 97 [2018-04-11 20:07:33,388 INFO L226 Difference]: Without dead ends: 70 [2018-04-11 20:07:33,389 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-04-11 20:07:33,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-04-11 20:07:33,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 60. [2018-04-11 20:07:33,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-04-11 20:07:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2018-04-11 20:07:33,394 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 24 [2018-04-11 20:07:33,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:33,395 INFO L459 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2018-04-11 20:07:33,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-11 20:07:33,395 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2018-04-11 20:07:33,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-11 20:07:33,395 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:33,396 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] [2018-04-11 20:07:33,396 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:33,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1733277010, 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 [2018-04-11 20:07:33,401 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:33,420 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:33,442 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:07:33,443 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:33,451 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:07:33,452 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-11 20:07:33,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:33,461 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:33,494 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:07:33,494 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-04-11 20:07:33,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-11 20:07:33,495 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-11 20:07:33,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-11 20:07:33,495 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 4 states. [2018-04-11 20:07:33,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:33,569 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2018-04-11 20:07:33,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-11 20:07:33,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-04-11 20:07:33,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:33,570 INFO L225 Difference]: With dead ends: 60 [2018-04-11 20:07:33,570 INFO L226 Difference]: Without dead ends: 56 [2018-04-11 20:07:33,571 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-11 20:07:33,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-04-11 20:07:33,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-04-11 20:07:33,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-04-11 20:07:33,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2018-04-11 20:07:33,578 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 24 [2018-04-11 20:07:33,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:33,579 INFO L459 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2018-04-11 20:07:33,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-11 20:07:33,579 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2018-04-11 20:07:33,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-11 20:07:33,580 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:33,580 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] [2018-04-11 20:07:33,580 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:33,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1733277009, 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 [2018-04-11 20:07:33,588 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:33,603 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:33,657 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-04-11 20:07:33,658 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:33,666 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-11 20:07:33,666 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2018-04-11 20:07:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:33,750 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:33,871 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:07:33,871 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-04-11 20:07:33,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-11 20:07:33,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-11 20:07:33,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-04-11 20:07:33,872 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 9 states. [2018-04-11 20:07:34,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:34,074 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2018-04-11 20:07:34,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-11 20:07:34,074 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-04-11 20:07:34,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:34,075 INFO L225 Difference]: With dead ends: 65 [2018-04-11 20:07:34,076 INFO L226 Difference]: Without dead ends: 64 [2018-04-11 20:07:34,076 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-04-11 20:07:34,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-04-11 20:07:34,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2018-04-11 20:07:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-04-11 20:07:34,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2018-04-11 20:07:34,087 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 24 [2018-04-11 20:07:34,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:34,088 INFO L459 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2018-04-11 20:07:34,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-11 20:07:34,089 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2018-04-11 20:07:34,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-04-11 20:07:34,090 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:34,090 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] [2018-04-11 20:07:34,090 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:34,090 INFO L82 PathProgramCache]: Analyzing trace with hash 281608856, 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 [2018-04-11 20:07:34,104 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:34,120 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:34,230 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:34,275 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 15 treesize of output 13 [2018-04-11 20:07:34,276 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:34,288 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 19 treesize of output 15 [2018-04-11 20:07:34,289 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:34,293 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:07:34,293 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:35, output treesize:11 [2018-04-11 20:07:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:34,332 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:07:34,332 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-04-11 20:07:34,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-11 20:07:34,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-11 20:07:34,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-04-11 20:07:34,333 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand 9 states. [2018-04-11 20:07:34,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:34,491 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2018-04-11 20:07:34,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-11 20:07:34,492 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2018-04-11 20:07:34,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:34,493 INFO L225 Difference]: With dead ends: 86 [2018-04-11 20:07:34,493 INFO L226 Difference]: Without dead ends: 83 [2018-04-11 20:07:34,494 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2018-04-11 20:07:34,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-04-11 20:07:34,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2018-04-11 20:07:34,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-04-11 20:07:34,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2018-04-11 20:07:34,504 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 34 [2018-04-11 20:07:34,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:34,504 INFO L459 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2018-04-11 20:07:34,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-11 20:07:34,505 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2018-04-11 20:07:34,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-04-11 20:07:34,506 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:34,506 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] [2018-04-11 20:07:34,506 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:34,506 INFO L82 PathProgramCache]: Analyzing trace with hash 319684798, 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 [2018-04-11 20:07:34,513 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:34,528 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:34,532 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-04-11 20:07:34,532 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:34,536 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:07:34,536 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-04-11 20:07:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:34,619 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:34,796 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:07:34,797 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-04-11 20:07:34,797 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-04-11 20:07:34,797 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-04-11 20:07:34,798 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-04-11 20:07:34,798 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand 14 states. [2018-04-11 20:07:35,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:35,207 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2018-04-11 20:07:35,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-04-11 20:07:35,207 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2018-04-11 20:07:35,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:35,208 INFO L225 Difference]: With dead ends: 67 [2018-04-11 20:07:35,209 INFO L226 Difference]: Without dead ends: 66 [2018-04-11 20:07:35,209 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2018-04-11 20:07:35,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-04-11 20:07:35,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2018-04-11 20:07:35,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-04-11 20:07:35,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2018-04-11 20:07:35,218 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 34 [2018-04-11 20:07:35,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:35,218 INFO L459 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2018-04-11 20:07:35,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-04-11 20:07:35,219 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2018-04-11 20:07:35,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-04-11 20:07:35,220 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:35,220 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] [2018-04-11 20:07:35,220 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:35,220 INFO L82 PathProgramCache]: Analyzing trace with hash 42247061, 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 [2018-04-11 20:07:35,236 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:35,248 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-11 20:07:35,257 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-11 20:07:35,286 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:07:35,286 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-04-11 20:07:35,286 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-11 20:07:35,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-11 20:07:35,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-11 20:07:35,287 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 5 states. [2018-04-11 20:07:35,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:35,316 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2018-04-11 20:07:35,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-11 20:07:35,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2018-04-11 20:07:35,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:35,317 INFO L225 Difference]: With dead ends: 74 [2018-04-11 20:07:35,317 INFO L226 Difference]: Without dead ends: 69 [2018-04-11 20:07:35,318 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-04-11 20:07:35,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-04-11 20:07:35,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 57. [2018-04-11 20:07:35,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-04-11 20:07:35,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2018-04-11 20:07:35,326 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 36 [2018-04-11 20:07:35,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:35,327 INFO L459 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2018-04-11 20:07:35,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-11 20:07:35,327 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2018-04-11 20:07:35,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-04-11 20:07:35,328 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:35,328 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] [2018-04-11 20:07:35,329 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:35,329 INFO L82 PathProgramCache]: Analyzing trace with hash -78003497, 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 [2018-04-11 20:07:35,342 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:35,359 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:35,399 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:35,431 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:35,452 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:07:35,452 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2018-04-11 20:07:35,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-11 20:07:35,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-11 20:07:35,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-04-11 20:07:35,453 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 12 states. [2018-04-11 20:07:35,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:35,649 INFO L93 Difference]: Finished difference Result 139 states and 150 transitions. [2018-04-11 20:07:35,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-04-11 20:07:35,650 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2018-04-11 20:07:35,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:35,651 INFO L225 Difference]: With dead ends: 139 [2018-04-11 20:07:35,651 INFO L226 Difference]: Without dead ends: 116 [2018-04-11 20:07:35,652 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2018-04-11 20:07:35,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-04-11 20:07:35,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2018-04-11 20:07:35,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-04-11 20:07:35,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2018-04-11 20:07:35,670 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 43 [2018-04-11 20:07:35,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:35,671 INFO L459 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2018-04-11 20:07:35,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-11 20:07:35,671 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2018-04-11 20:07:35,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-04-11 20:07:35,672 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:35,672 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] [2018-04-11 20:07:35,672 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:35,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1947840492, 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 [2018-04-11 20:07:35,680 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:35,696 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:35,715 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc3.base| Int)) (and (= 0 (select |c_old(#valid)| |main_#t~malloc3.base|)) (= |c_#valid| (store |c_old(#valid)| |main_#t~malloc3.base| 0)))) is different from true [2018-04-11 20:07:35,719 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-04-11 20:07:35,720 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:35,729 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc3.base_17| Int)) (or (= (store |c_#valid| |v_main_#t~malloc3.base_17| 0) |c_old(#valid)|) (not (= 0 (select |c_#valid| |v_main_#t~malloc3.base_17|))))) is different from false [2018-04-11 20:07:35,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-04-11 20:07:35,766 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:07:35,767 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2018-04-11 20:07:35,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-11 20:07:35,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-11 20:07:35,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=14, Unknown=2, NotChecked=14, Total=42 [2018-04-11 20:07:35,767 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 7 states. [2018-04-11 20:07:35,774 WARN L1011 $PredicateComparison]: unable to prove that (and (= |c_#valid| |c_old(#valid)|) (forall ((|v_main_#t~malloc3.base_17| Int)) (or (= (store |c_#valid| |v_main_#t~malloc3.base_17| 0) |c_old(#valid)|) (not (= 0 (select |c_#valid| |v_main_#t~malloc3.base_17|)))))) is different from false [2018-04-11 20:07:35,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:35,827 INFO L93 Difference]: Finished difference Result 126 states and 135 transitions. [2018-04-11 20:07:35,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-11 20:07:35,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2018-04-11 20:07:35,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:35,829 INFO L225 Difference]: With dead ends: 126 [2018-04-11 20:07:35,829 INFO L226 Difference]: Without dead ends: 103 [2018-04-11 20:07:35,830 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=28, Unknown=4, NotChecked=36, Total=90 [2018-04-11 20:07:35,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-04-11 20:07:35,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-04-11 20:07:35,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-04-11 20:07:35,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2018-04-11 20:07:35,843 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 45 [2018-04-11 20:07:35,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:35,843 INFO L459 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2018-04-11 20:07:35,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-11 20:07:35,843 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2018-04-11 20:07:35,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-04-11 20:07:35,844 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:35,845 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] [2018-04-11 20:07:35,845 INFO L408 AbstractCegarLoop]: === Iteration 10 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:35,845 INFO L82 PathProgramCache]: Analyzing trace with hash 794928471, 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 [2018-04-11 20:07:35,854 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:35,875 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:35,897 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc3.base| Int)) (and (= 0 (select |c_old(#valid)| |main_#t~malloc3.base|)) (= |c_#valid| (store |c_old(#valid)| |main_#t~malloc3.base| 0)))) is different from true [2018-04-11 20:07:35,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-04-11 20:07:35,903 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:35,911 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc3.base_19| Int)) (or (= (store |c_#valid| |v_main_#t~malloc3.base_19| 0) |c_old(#valid)|) (not (= 0 (select |c_#valid| |v_main_#t~malloc3.base_19|))))) is different from false [2018-04-11 20:07:35,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-04-11 20:07:35,947 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:07:35,947 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2018-04-11 20:07:35,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-11 20:07:35,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-11 20:07:35,948 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=14, Unknown=2, NotChecked=14, Total=42 [2018-04-11 20:07:35,948 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand 7 states. [2018-04-11 20:07:35,954 WARN L1011 $PredicateComparison]: unable to prove that (and (= |c_#valid| |c_old(#valid)|) (forall ((|v_main_#t~malloc3.base_19| Int)) (or (= (store |c_#valid| |v_main_#t~malloc3.base_19| 0) |c_old(#valid)|) (not (= 0 (select |c_#valid| |v_main_#t~malloc3.base_19|)))))) is different from false [2018-04-11 20:07:36,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:36,015 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2018-04-11 20:07:36,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-11 20:07:36,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2018-04-11 20:07:36,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:36,015 INFO L225 Difference]: With dead ends: 103 [2018-04-11 20:07:36,016 INFO L226 Difference]: Without dead ends: 62 [2018-04-11 20:07:36,016 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=28, Unknown=4, NotChecked=36, Total=90 [2018-04-11 20:07:36,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-04-11 20:07:36,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-04-11 20:07:36,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-04-11 20:07:36,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2018-04-11 20:07:36,023 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 46 [2018-04-11 20:07:36,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:36,024 INFO L459 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2018-04-11 20:07:36,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-11 20:07:36,024 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2018-04-11 20:07:36,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-04-11 20:07:36,025 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:36,025 INFO L355 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:07:36,025 INFO L408 AbstractCegarLoop]: === Iteration 11 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:36,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1027613592, now seen corresponding path program 2 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 [2018-04-11 20:07:36,038 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:36,060 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:36,198 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:36,252 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 17 treesize of output 15 [2018-04-11 20:07:36,253 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:36,258 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 19 treesize of output 15 [2018-04-11 20:07:36,259 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:36,261 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:07:36,262 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:07:36,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:36,365 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:07:36,366 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-04-11 20:07:36,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-04-11 20:07:36,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-04-11 20:07:36,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2018-04-11 20:07:36,366 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 20 states. [2018-04-11 20:07:36,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:36,670 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2018-04-11 20:07:36,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-04-11 20:07:36,670 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 53 [2018-04-11 20:07:36,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:36,670 INFO L225 Difference]: With dead ends: 98 [2018-04-11 20:07:36,671 INFO L226 Difference]: Without dead ends: 97 [2018-04-11 20:07:36,671 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=265, Invalid=727, Unknown=0, NotChecked=0, Total=992 [2018-04-11 20:07:36,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-04-11 20:07:36,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 77. [2018-04-11 20:07:36,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-04-11 20:07:36,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2018-04-11 20:07:36,682 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 53 [2018-04-11 20:07:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:36,682 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2018-04-11 20:07:36,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-04-11 20:07:36,682 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2018-04-11 20:07:36,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-04-11 20:07:36,684 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:36,684 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:07:36,684 INFO L408 AbstractCegarLoop]: === Iteration 12 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:36,684 INFO L82 PathProgramCache]: Analyzing trace with hash -625806585, now seen corresponding path program 3 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 [2018-04-11 20:07:36,692 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:36,709 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:36,771 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:36,771 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:36,842 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:36,868 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:07:36,869 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2018-04-11 20:07:36,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-04-11 20:07:36,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-04-11 20:07:36,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2018-04-11 20:07:36,870 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 18 states. [2018-04-11 20:07:37,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:37,084 INFO L93 Difference]: Finished difference Result 147 states and 158 transitions. [2018-04-11 20:07:37,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-11 20:07:37,084 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 62 [2018-04-11 20:07:37,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:37,085 INFO L225 Difference]: With dead ends: 147 [2018-04-11 20:07:37,085 INFO L226 Difference]: Without dead ends: 96 [2018-04-11 20:07:37,086 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 101 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=687, Unknown=0, NotChecked=0, Total=870 [2018-04-11 20:07:37,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-04-11 20:07:37,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2018-04-11 20:07:37,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-04-11 20:07:37,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2018-04-11 20:07:37,093 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 62 [2018-04-11 20:07:37,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:37,094 INFO L459 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2018-04-11 20:07:37,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-04-11 20:07:37,094 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2018-04-11 20:07:37,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-04-11 20:07:37,095 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:37,095 INFO L355 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:07:37,095 INFO L408 AbstractCegarLoop]: === Iteration 13 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:37,095 INFO L82 PathProgramCache]: Analyzing trace with hash 505849302, now seen corresponding path program 4 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 [2018-04-11 20:07:37,103 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:37,122 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:37,281 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:37,355 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 17 treesize of output 15 [2018-04-11 20:07:37,356 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:37,361 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 19 treesize of output 15 [2018-04-11 20:07:37,362 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:37,364 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:07:37,364 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:07:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:37,533 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:07:37,533 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2018-04-11 20:07:37,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-04-11 20:07:37,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-04-11 20:07:37,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2018-04-11 20:07:37,535 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand 28 states. [2018-04-11 20:07:38,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:38,073 INFO L93 Difference]: Finished difference Result 124 states and 133 transitions. [2018-04-11 20:07:38,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-11 20:07:38,074 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 72 [2018-04-11 20:07:38,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:38,074 INFO L225 Difference]: With dead ends: 124 [2018-04-11 20:07:38,074 INFO L226 Difference]: Without dead ends: 123 [2018-04-11 20:07:38,075 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=472, Invalid=1598, Unknown=0, NotChecked=0, Total=2070 [2018-04-11 20:07:38,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-04-11 20:07:38,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 103. [2018-04-11 20:07:38,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-04-11 20:07:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2018-04-11 20:07:38,088 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 72 [2018-04-11 20:07:38,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:38,088 INFO L459 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2018-04-11 20:07:38,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-04-11 20:07:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2018-04-11 20:07:38,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-04-11 20:07:38,090 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:38,090 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:07:38,090 INFO L408 AbstractCegarLoop]: === Iteration 14 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:38,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1821579943, now seen corresponding path program 5 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 [2018-04-11 20:07:38,099 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:38,126 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 39 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:38,244 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:38,344 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 39 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:38,364 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:07:38,364 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 24 [2018-04-11 20:07:38,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-04-11 20:07:38,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-04-11 20:07:38,365 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2018-04-11 20:07:38,365 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand 24 states. [2018-04-11 20:07:38,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:38,646 INFO L93 Difference]: Finished difference Result 188 states and 202 transitions. [2018-04-11 20:07:38,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-04-11 20:07:38,646 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 81 [2018-04-11 20:07:38,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:38,647 INFO L225 Difference]: With dead ends: 188 [2018-04-11 20:07:38,647 INFO L226 Difference]: Without dead ends: 122 [2018-04-11 20:07:38,648 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 131 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=313, Invalid=1327, Unknown=0, NotChecked=0, Total=1640 [2018-04-11 20:07:38,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-04-11 20:07:38,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 114. [2018-04-11 20:07:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-04-11 20:07:38,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2018-04-11 20:07:38,657 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 81 [2018-04-11 20:07:38,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:38,658 INFO L459 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2018-04-11 20:07:38,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-04-11 20:07:38,658 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2018-04-11 20:07:38,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-04-11 20:07:38,659 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:38,659 INFO L355 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:07:38,659 INFO L408 AbstractCegarLoop]: === Iteration 15 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:38,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1878767062, now seen corresponding path program 6 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 [2018-04-11 20:07:38,666 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:38,686 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:38,890 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 51 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:38,890 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:39,033 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 19 treesize of output 15 [2018-04-11 20:07:39,034 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:39,039 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 17 treesize of output 15 [2018-04-11 20:07:39,039 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:39,041 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:07:39,042 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:07:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 51 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:39,367 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:07:39,367 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2018-04-11 20:07:39,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-04-11 20:07:39,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-04-11 20:07:39,368 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2018-04-11 20:07:39,368 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand 36 states. [2018-04-11 20:07:40,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:40,103 INFO L93 Difference]: Finished difference Result 150 states and 161 transitions. [2018-04-11 20:07:40,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-04-11 20:07:40,103 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 91 [2018-04-11 20:07:40,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:40,104 INFO L225 Difference]: With dead ends: 150 [2018-04-11 20:07:40,104 INFO L226 Difference]: Without dead ends: 149 [2018-04-11 20:07:40,105 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=727, Invalid=2813, Unknown=0, NotChecked=0, Total=3540 [2018-04-11 20:07:40,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-04-11 20:07:40,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 129. [2018-04-11 20:07:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-04-11 20:07:40,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 138 transitions. [2018-04-11 20:07:40,118 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 138 transitions. Word has length 91 [2018-04-11 20:07:40,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:40,119 INFO L459 AbstractCegarLoop]: Abstraction has 129 states and 138 transitions. [2018-04-11 20:07:40,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-04-11 20:07:40,119 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 138 transitions. [2018-04-11 20:07:40,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-04-11 20:07:40,120 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:40,120 INFO L355 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:07:40,120 INFO L408 AbstractCegarLoop]: === Iteration 16 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:40,120 INFO L82 PathProgramCache]: Analyzing trace with hash 515956613, now seen corresponding path program 7 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 [2018-04-11 20:07:40,126 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:40,151 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 70 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:40,268 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:40,401 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 70 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:40,420 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:07:40,421 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2018-04-11 20:07:40,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-04-11 20:07:40,421 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-04-11 20:07:40,421 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2018-04-11 20:07:40,422 INFO L87 Difference]: Start difference. First operand 129 states and 138 transitions. Second operand 30 states. [2018-04-11 20:07:40,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:40,831 INFO L93 Difference]: Finished difference Result 229 states and 246 transitions. [2018-04-11 20:07:40,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-04-11 20:07:40,831 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 100 [2018-04-11 20:07:40,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:40,833 INFO L225 Difference]: With dead ends: 229 [2018-04-11 20:07:40,833 INFO L226 Difference]: Without dead ends: 148 [2018-04-11 20:07:40,834 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 161 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=476, Invalid=2176, Unknown=0, NotChecked=0, Total=2652 [2018-04-11 20:07:40,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-04-11 20:07:40,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 140. [2018-04-11 20:07:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-04-11 20:07:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 150 transitions. [2018-04-11 20:07:40,851 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 150 transitions. Word has length 100 [2018-04-11 20:07:40,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:40,851 INFO L459 AbstractCegarLoop]: Abstraction has 140 states and 150 transitions. [2018-04-11 20:07:40,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-04-11 20:07:40,851 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 150 transitions. [2018-04-11 20:07:40,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-04-11 20:07:40,852 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:40,853 INFO L355 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:07:40,853 INFO L408 AbstractCegarLoop]: === Iteration 17 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:40,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1738997524, now seen corresponding path program 8 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 [2018-04-11 20:07:40,862 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:40,894 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 88 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:41,231 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:41,422 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 19 treesize of output 15 [2018-04-11 20:07:41,423 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:41,429 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 17 treesize of output 15 [2018-04-11 20:07:41,429 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:41,434 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:07:41,434 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:07:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 88 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:41,843 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:07:41,843 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2018-04-11 20:07:41,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-04-11 20:07:41,844 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-04-11 20:07:41,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1656, Unknown=0, NotChecked=0, Total=1892 [2018-04-11 20:07:41,844 INFO L87 Difference]: Start difference. First operand 140 states and 150 transitions. Second operand 44 states. [2018-04-11 20:07:42,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:42,893 INFO L93 Difference]: Finished difference Result 176 states and 189 transitions. [2018-04-11 20:07:42,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-04-11 20:07:42,894 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 110 [2018-04-11 20:07:42,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:42,894 INFO L225 Difference]: With dead ends: 176 [2018-04-11 20:07:42,895 INFO L226 Difference]: Without dead ends: 175 [2018-04-11 20:07:42,896 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1030, Invalid=4372, Unknown=0, NotChecked=0, Total=5402 [2018-04-11 20:07:42,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-04-11 20:07:42,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 155. [2018-04-11 20:07:42,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-04-11 20:07:42,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2018-04-11 20:07:42,908 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 110 [2018-04-11 20:07:42,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:42,908 INFO L459 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2018-04-11 20:07:42,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-04-11 20:07:42,909 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2018-04-11 20:07:42,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-04-11 20:07:42,909 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:42,910 INFO L355 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:07:42,910 INFO L408 AbstractCegarLoop]: === Iteration 18 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:42,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1408626213, now seen corresponding path program 9 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 [2018-04-11 20:07:42,919 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:42,943 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:43,108 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 110 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:43,108 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 110 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:43,335 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:07:43,335 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 36 [2018-04-11 20:07:43,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-04-11 20:07:43,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-04-11 20:07:43,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1069, Unknown=0, NotChecked=0, Total=1260 [2018-04-11 20:07:43,336 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand 36 states. [2018-04-11 20:07:43,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:43,868 INFO L93 Difference]: Finished difference Result 270 states and 290 transitions. [2018-04-11 20:07:43,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-04-11 20:07:43,868 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 119 [2018-04-11 20:07:43,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:43,869 INFO L225 Difference]: With dead ends: 270 [2018-04-11 20:07:43,869 INFO L226 Difference]: Without dead ends: 174 [2018-04-11 20:07:43,871 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 191 SyntacticMatches, 12 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=672, Invalid=3234, Unknown=0, NotChecked=0, Total=3906 [2018-04-11 20:07:43,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-04-11 20:07:43,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 166. [2018-04-11 20:07:43,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-04-11 20:07:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 178 transitions. [2018-04-11 20:07:43,925 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 178 transitions. Word has length 119 [2018-04-11 20:07:43,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:43,925 INFO L459 AbstractCegarLoop]: Abstraction has 166 states and 178 transitions. [2018-04-11 20:07:43,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-04-11 20:07:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 178 transitions. [2018-04-11 20:07:43,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-04-11 20:07:43,926 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:43,927 INFO L355 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:07:43,927 INFO L408 AbstractCegarLoop]: === Iteration 19 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:43,927 INFO L82 PathProgramCache]: Analyzing trace with hash -104836628, now seen corresponding path program 10 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 [2018-04-11 20:07:43,935 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:43,965 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 135 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:44,399 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:44,614 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 19 treesize of output 15 [2018-04-11 20:07:44,615 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:44,620 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 17 treesize of output 15 [2018-04-11 20:07:44,620 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:44,622 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:07:44,622 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:07:45,129 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 135 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:45,150 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:07:45,150 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2018-04-11 20:07:45,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-04-11 20:07:45,150 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-04-11 20:07:45,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=2346, Unknown=0, NotChecked=0, Total=2652 [2018-04-11 20:07:45,151 INFO L87 Difference]: Start difference. First operand 166 states and 178 transitions. Second operand 52 states. [2018-04-11 20:07:46,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:46,510 INFO L93 Difference]: Finished difference Result 202 states and 217 transitions. [2018-04-11 20:07:46,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-04-11 20:07:46,510 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 129 [2018-04-11 20:07:46,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:46,512 INFO L225 Difference]: With dead ends: 202 [2018-04-11 20:07:46,512 INFO L226 Difference]: Without dead ends: 201 [2018-04-11 20:07:46,514 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1381, Invalid=6275, Unknown=0, NotChecked=0, Total=7656 [2018-04-11 20:07:46,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-04-11 20:07:46,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 181. [2018-04-11 20:07:46,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-04-11 20:07:46,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 194 transitions. [2018-04-11 20:07:46,536 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 194 transitions. Word has length 129 [2018-04-11 20:07:46,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:46,537 INFO L459 AbstractCegarLoop]: Abstraction has 181 states and 194 transitions. [2018-04-11 20:07:46,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-04-11 20:07:46,537 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 194 transitions. [2018-04-11 20:07:46,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-04-11 20:07:46,538 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:46,538 INFO L355 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:07:46,538 INFO L408 AbstractCegarLoop]: === Iteration 20 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:46,538 INFO L82 PathProgramCache]: Analyzing trace with hash 172257795, now seen corresponding path program 11 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 [2018-04-11 20:07:46,544 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:46,571 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:46,766 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 159 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:46,766 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 159 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:47,015 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:07:47,016 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 42 [2018-04-11 20:07:47,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-04-11 20:07:47,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-04-11 20:07:47,017 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1471, Unknown=0, NotChecked=0, Total=1722 [2018-04-11 20:07:47,017 INFO L87 Difference]: Start difference. First operand 181 states and 194 transitions. Second operand 42 states. [2018-04-11 20:07:47,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:47,979 INFO L93 Difference]: Finished difference Result 311 states and 334 transitions. [2018-04-11 20:07:47,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-04-11 20:07:47,979 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 138 [2018-04-11 20:07:47,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:47,980 INFO L225 Difference]: With dead ends: 311 [2018-04-11 20:07:47,980 INFO L226 Difference]: Without dead ends: 200 [2018-04-11 20:07:47,982 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 221 SyntacticMatches, 14 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1370 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=901, Invalid=4501, Unknown=0, NotChecked=0, Total=5402 [2018-04-11 20:07:47,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-04-11 20:07:47,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 192. [2018-04-11 20:07:47,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-04-11 20:07:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 206 transitions. [2018-04-11 20:07:47,996 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 206 transitions. Word has length 138 [2018-04-11 20:07:47,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:47,996 INFO L459 AbstractCegarLoop]: Abstraction has 192 states and 206 transitions. [2018-04-11 20:07:47,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-04-11 20:07:47,997 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 206 transitions. [2018-04-11 20:07:47,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-04-11 20:07:47,997 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:47,997 INFO L355 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:07:47,997 INFO L408 AbstractCegarLoop]: === Iteration 21 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:47,997 INFO L82 PathProgramCache]: Analyzing trace with hash -601526702, now seen corresponding path program 12 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 [2018-04-11 20:07:48,003 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:48,032 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 192 proven. 191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:48,494 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:48,803 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 17 treesize of output 15 [2018-04-11 20:07:48,804 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:48,809 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 19 treesize of output 15 [2018-04-11 20:07:48,809 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:48,812 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:07:48,812 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:07:49,437 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 192 proven. 191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:49,457 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:07:49,457 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2018-04-11 20:07:49,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-04-11 20:07:49,458 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-04-11 20:07:49,459 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=3156, Unknown=0, NotChecked=0, Total=3540 [2018-04-11 20:07:49,459 INFO L87 Difference]: Start difference. First operand 192 states and 206 transitions. Second operand 60 states. [2018-04-11 20:07:51,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:51,280 INFO L93 Difference]: Finished difference Result 228 states and 245 transitions. [2018-04-11 20:07:51,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-11 20:07:51,280 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 148 [2018-04-11 20:07:51,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:51,282 INFO L225 Difference]: With dead ends: 228 [2018-04-11 20:07:51,282 INFO L226 Difference]: Without dead ends: 227 [2018-04-11 20:07:51,285 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2384 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1780, Invalid=8522, Unknown=0, NotChecked=0, Total=10302 [2018-04-11 20:07:51,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-04-11 20:07:51,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 207. [2018-04-11 20:07:51,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-04-11 20:07:51,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 222 transitions. [2018-04-11 20:07:51,302 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 222 transitions. Word has length 148 [2018-04-11 20:07:51,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:51,303 INFO L459 AbstractCegarLoop]: Abstraction has 207 states and 222 transitions. [2018-04-11 20:07:51,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-04-11 20:07:51,303 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 222 transitions. [2018-04-11 20:07:51,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-04-11 20:07:51,304 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:51,304 INFO L355 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:07:51,304 INFO L408 AbstractCegarLoop]: === Iteration 22 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:51,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1730275421, now seen corresponding path program 13 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 [2018-04-11 20:07:51,310 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:51,338 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 217 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:51,610 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:51,915 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 217 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:51,935 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:07:51,935 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 48 [2018-04-11 20:07:51,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-04-11 20:07:51,936 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-04-11 20:07:51,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=1937, Unknown=0, NotChecked=0, Total=2256 [2018-04-11 20:07:51,937 INFO L87 Difference]: Start difference. First operand 207 states and 222 transitions. Second operand 48 states. [2018-04-11 20:07:52,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:52,793 INFO L93 Difference]: Finished difference Result 352 states and 378 transitions. [2018-04-11 20:07:52,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-04-11 20:07:52,794 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 157 [2018-04-11 20:07:52,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:52,795 INFO L225 Difference]: With dead ends: 352 [2018-04-11 20:07:52,795 INFO L226 Difference]: Without dead ends: 226 [2018-04-11 20:07:52,796 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 251 SyntacticMatches, 16 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1854 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1163, Invalid=5977, Unknown=0, NotChecked=0, Total=7140 [2018-04-11 20:07:52,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-04-11 20:07:52,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 218. [2018-04-11 20:07:52,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-04-11 20:07:52,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 234 transitions. [2018-04-11 20:07:52,817 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 234 transitions. Word has length 157 [2018-04-11 20:07:52,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:52,818 INFO L459 AbstractCegarLoop]: Abstraction has 218 states and 234 transitions. [2018-04-11 20:07:52,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-04-11 20:07:52,818 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 234 transitions. [2018-04-11 20:07:52,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-04-11 20:07:52,819 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:52,819 INFO L355 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:07:52,819 INFO L408 AbstractCegarLoop]: === Iteration 23 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:52,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1396216750, now seen corresponding path program 14 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:07:52,829 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:52,877 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 259 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:53,633 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:54,056 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 17 treesize of output 15 [2018-04-11 20:07:54,056 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:54,063 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 19 treesize of output 15 [2018-04-11 20:07:54,063 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:07:54,076 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:07:54,076 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:07:54,929 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 259 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:54,949 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:07:54,949 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 67 [2018-04-11 20:07:54,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-04-11 20:07:54,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-04-11 20:07:54,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=4086, Unknown=0, NotChecked=0, Total=4556 [2018-04-11 20:07:54,950 INFO L87 Difference]: Start difference. First operand 218 states and 234 transitions. Second operand 68 states. [2018-04-11 20:07:57,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:57,254 INFO L93 Difference]: Finished difference Result 254 states and 273 transitions. [2018-04-11 20:07:57,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-04-11 20:07:57,254 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 167 [2018-04-11 20:07:57,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:57,256 INFO L225 Difference]: With dead ends: 254 [2018-04-11 20:07:57,256 INFO L226 Difference]: Without dead ends: 253 [2018-04-11 20:07:57,257 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3155 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2227, Invalid=11113, Unknown=0, NotChecked=0, Total=13340 [2018-04-11 20:07:57,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-04-11 20:07:57,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 233. [2018-04-11 20:07:57,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-04-11 20:07:57,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 250 transitions. [2018-04-11 20:07:57,291 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 250 transitions. Word has length 167 [2018-04-11 20:07:57,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:57,292 INFO L459 AbstractCegarLoop]: Abstraction has 233 states and 250 transitions. [2018-04-11 20:07:57,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-04-11 20:07:57,292 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 250 transitions. [2018-04-11 20:07:57,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-04-11 20:07:57,293 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:57,293 INFO L355 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:07:57,294 INFO L408 AbstractCegarLoop]: === Iteration 24 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:57,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1657992575, now seen corresponding path program 15 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 [2018-04-11 20:07:57,300 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:57,338 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:07:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 284 proven. 296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:58,125 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:07:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 284 proven. 296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:07:58,522 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:07:58,522 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 54 [2018-04-11 20:07:58,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-04-11 20:07:58,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-04-11 20:07:58,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=2467, Unknown=0, NotChecked=0, Total=2862 [2018-04-11 20:07:58,523 INFO L87 Difference]: Start difference. First operand 233 states and 250 transitions. Second operand 54 states. [2018-04-11 20:07:59,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:07:59,614 INFO L93 Difference]: Finished difference Result 393 states and 422 transitions. [2018-04-11 20:07:59,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-04-11 20:07:59,614 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 176 [2018-04-11 20:07:59,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:07:59,616 INFO L225 Difference]: With dead ends: 393 [2018-04-11 20:07:59,616 INFO L226 Difference]: Without dead ends: 252 [2018-04-11 20:07:59,617 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 281 SyntacticMatches, 18 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2411 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1458, Invalid=7662, Unknown=0, NotChecked=0, Total=9120 [2018-04-11 20:07:59,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-04-11 20:07:59,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 244. [2018-04-11 20:07:59,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-04-11 20:07:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 262 transitions. [2018-04-11 20:07:59,651 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 262 transitions. Word has length 176 [2018-04-11 20:07:59,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:07:59,652 INFO L459 AbstractCegarLoop]: Abstraction has 244 states and 262 transitions. [2018-04-11 20:07:59,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-04-11 20:07:59,652 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 262 transitions. [2018-04-11 20:07:59,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-04-11 20:07:59,653 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:07:59,653 INFO L355 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:07:59,653 INFO L408 AbstractCegarLoop]: === Iteration 25 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:07:59,654 INFO L82 PathProgramCache]: Analyzing trace with hash 29184912, now seen corresponding path program 16 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 [2018-04-11 20:07:59,662 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:07:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:07:59,705 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:08:00,453 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 336 proven. 326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:00,454 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:08:00,890 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 17 treesize of output 15 [2018-04-11 20:08:00,891 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:08:00,896 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 19 treesize of output 15 [2018-04-11 20:08:00,897 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:08:00,899 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:08:00,899 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:08:01,907 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 336 proven. 326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:01,927 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:08:01,927 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2018-04-11 20:08:01,928 INFO L442 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-04-11 20:08:01,928 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-04-11 20:08:01,929 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=564, Invalid=5136, Unknown=0, NotChecked=0, Total=5700 [2018-04-11 20:08:01,929 INFO L87 Difference]: Start difference. First operand 244 states and 262 transitions. Second operand 76 states. [2018-04-11 20:08:04,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:08:04,353 INFO L93 Difference]: Finished difference Result 280 states and 301 transitions. [2018-04-11 20:08:04,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-04-11 20:08:04,353 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 186 [2018-04-11 20:08:04,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:08:04,354 INFO L225 Difference]: With dead ends: 280 [2018-04-11 20:08:04,354 INFO L226 Difference]: Without dead ends: 279 [2018-04-11 20:08:04,355 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4034 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2722, Invalid=14048, Unknown=0, NotChecked=0, Total=16770 [2018-04-11 20:08:04,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-04-11 20:08:04,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 259. [2018-04-11 20:08:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-04-11 20:08:04,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 278 transitions. [2018-04-11 20:08:04,378 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 278 transitions. Word has length 186 [2018-04-11 20:08:04,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:08:04,378 INFO L459 AbstractCegarLoop]: Abstraction has 259 states and 278 transitions. [2018-04-11 20:08:04,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-04-11 20:08:04,378 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 278 transitions. [2018-04-11 20:08:04,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-04-11 20:08:04,379 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:08:04,379 INFO L355 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:08:04,379 INFO L408 AbstractCegarLoop]: === Iteration 26 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:08:04,379 INFO L82 PathProgramCache]: Analyzing trace with hash 2003110111, now seen corresponding path program 17 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 [2018-04-11 20:08:04,396 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:08:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:08:04,438 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:08:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 360 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:04,901 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:08:05,370 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 360 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:05,390 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:08:05,390 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 60 [2018-04-11 20:08:05,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-04-11 20:08:05,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-04-11 20:08:05,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=3061, Unknown=0, NotChecked=0, Total=3540 [2018-04-11 20:08:05,391 INFO L87 Difference]: Start difference. First operand 259 states and 278 transitions. Second operand 60 states. [2018-04-11 20:08:06,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:08:06,554 INFO L93 Difference]: Finished difference Result 434 states and 466 transitions. [2018-04-11 20:08:06,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-04-11 20:08:06,554 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 195 [2018-04-11 20:08:06,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:08:06,555 INFO L225 Difference]: With dead ends: 434 [2018-04-11 20:08:06,555 INFO L226 Difference]: Without dead ends: 278 [2018-04-11 20:08:06,556 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 311 SyntacticMatches, 20 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3041 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1786, Invalid=9556, Unknown=0, NotChecked=0, Total=11342 [2018-04-11 20:08:06,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-04-11 20:08:06,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 270. [2018-04-11 20:08:06,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-04-11 20:08:06,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 290 transitions. [2018-04-11 20:08:06,578 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 290 transitions. Word has length 195 [2018-04-11 20:08:06,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:08:06,578 INFO L459 AbstractCegarLoop]: Abstraction has 270 states and 290 transitions. [2018-04-11 20:08:06,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-04-11 20:08:06,578 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 290 transitions. [2018-04-11 20:08:06,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-04-11 20:08:06,579 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:08:06,579 INFO L355 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:08:06,579 INFO L408 AbstractCegarLoop]: === Iteration 27 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:08:06,580 INFO L82 PathProgramCache]: Analyzing trace with hash -512643216, now seen corresponding path program 18 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 [2018-04-11 20:08:06,587 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:08:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:08:06,624 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:08:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 423 proven. 407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:07,435 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:08:08,043 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 17 treesize of output 15 [2018-04-11 20:08:08,043 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:08:08,048 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 19 treesize of output 15 [2018-04-11 20:08:08,049 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:08:08,051 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:08:08,051 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:08:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 423 proven. 407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:09,255 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:08:09,256 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 83 [2018-04-11 20:08:09,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-04-11 20:08:09,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-04-11 20:08:09,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=6306, Unknown=0, NotChecked=0, Total=6972 [2018-04-11 20:08:09,258 INFO L87 Difference]: Start difference. First operand 270 states and 290 transitions. Second operand 84 states. [2018-04-11 20:08:12,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:08:12,254 INFO L93 Difference]: Finished difference Result 306 states and 329 transitions. [2018-04-11 20:08:12,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-04-11 20:08:12,254 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 205 [2018-04-11 20:08:12,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:08:12,256 INFO L225 Difference]: With dead ends: 306 [2018-04-11 20:08:12,256 INFO L226 Difference]: Without dead ends: 305 [2018-04-11 20:08:12,256 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5021 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3265, Invalid=17327, Unknown=0, NotChecked=0, Total=20592 [2018-04-11 20:08:12,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-04-11 20:08:12,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 285. [2018-04-11 20:08:12,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-04-11 20:08:12,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 306 transitions. [2018-04-11 20:08:12,299 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 306 transitions. Word has length 205 [2018-04-11 20:08:12,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:08:12,299 INFO L459 AbstractCegarLoop]: Abstraction has 285 states and 306 transitions. [2018-04-11 20:08:12,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-04-11 20:08:12,300 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 306 transitions. [2018-04-11 20:08:12,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-04-11 20:08:12,301 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:08:12,301 INFO L355 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:08:12,301 INFO L408 AbstractCegarLoop]: === Iteration 28 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:08:12,301 INFO L82 PathProgramCache]: Analyzing trace with hash -576059137, now seen corresponding path program 19 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:08:12,309 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:08:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:08:12,356 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:08:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 445 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:12,862 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:08:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 445 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:13,405 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:08:13,405 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 66 [2018-04-11 20:08:13,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-04-11 20:08:13,405 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-04-11 20:08:13,406 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=3719, Unknown=0, NotChecked=0, Total=4290 [2018-04-11 20:08:13,406 INFO L87 Difference]: Start difference. First operand 285 states and 306 transitions. Second operand 66 states. [2018-04-11 20:08:14,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:08:14,740 INFO L93 Difference]: Finished difference Result 475 states and 510 transitions. [2018-04-11 20:08:14,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-04-11 20:08:14,740 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 214 [2018-04-11 20:08:14,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:08:14,741 INFO L225 Difference]: With dead ends: 475 [2018-04-11 20:08:14,742 INFO L226 Difference]: Without dead ends: 304 [2018-04-11 20:08:14,742 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 341 SyntacticMatches, 22 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3744 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2147, Invalid=11659, Unknown=0, NotChecked=0, Total=13806 [2018-04-11 20:08:14,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-04-11 20:08:14,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 296. [2018-04-11 20:08:14,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-04-11 20:08:14,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 318 transitions. [2018-04-11 20:08:14,775 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 318 transitions. Word has length 214 [2018-04-11 20:08:14,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:08:14,775 INFO L459 AbstractCegarLoop]: Abstraction has 296 states and 318 transitions. [2018-04-11 20:08:14,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-04-11 20:08:14,775 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 318 transitions. [2018-04-11 20:08:14,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-04-11 20:08:14,776 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:08:14,776 INFO L355 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:08:14,776 INFO L408 AbstractCegarLoop]: === Iteration 29 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:08:14,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1674186446, now seen corresponding path program 20 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:08:14,783 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:08:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:08:14,836 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:08:16,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 520 proven. 497 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:16,267 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:08:16,917 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 19 treesize of output 15 [2018-04-11 20:08:16,918 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:08:16,923 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 17 treesize of output 15 [2018-04-11 20:08:16,924 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:08:16,926 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:08:16,926 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:08:18,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 520 proven. 497 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:18,381 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:08:18,381 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 91 [2018-04-11 20:08:18,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-04-11 20:08:18,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-04-11 20:08:18,383 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=776, Invalid=7596, Unknown=0, NotChecked=0, Total=8372 [2018-04-11 20:08:18,383 INFO L87 Difference]: Start difference. First operand 296 states and 318 transitions. Second operand 92 states. [2018-04-11 20:08:21,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:08:21,970 INFO L93 Difference]: Finished difference Result 332 states and 357 transitions. [2018-04-11 20:08:22,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-04-11 20:08:22,003 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 224 [2018-04-11 20:08:22,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:08:22,005 INFO L225 Difference]: With dead ends: 332 [2018-04-11 20:08:22,005 INFO L226 Difference]: Without dead ends: 331 [2018-04-11 20:08:22,006 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6116 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3856, Invalid=20950, Unknown=0, NotChecked=0, Total=24806 [2018-04-11 20:08:22,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-04-11 20:08:22,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 311. [2018-04-11 20:08:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-04-11 20:08:22,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 334 transitions. [2018-04-11 20:08:22,033 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 334 transitions. Word has length 224 [2018-04-11 20:08:22,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:08:22,034 INFO L459 AbstractCegarLoop]: Abstraction has 311 states and 334 transitions. [2018-04-11 20:08:22,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-04-11 20:08:22,034 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 334 transitions. [2018-04-11 20:08:22,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-04-11 20:08:22,035 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:08:22,035 INFO L355 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:08:22,035 INFO L408 AbstractCegarLoop]: === Iteration 30 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:08:22,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1917064033, now seen corresponding path program 21 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:08:22,040 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:08:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:08:22,082 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:08:22,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 539 proven. 572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:22,617 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:08:23,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 539 proven. 572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:23,276 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:08:23,276 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 72 [2018-04-11 20:08:23,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-04-11 20:08:23,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-04-11 20:08:23,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=671, Invalid=4441, Unknown=0, NotChecked=0, Total=5112 [2018-04-11 20:08:23,277 INFO L87 Difference]: Start difference. First operand 311 states and 334 transitions. Second operand 72 states. [2018-04-11 20:08:25,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:08:25,005 INFO L93 Difference]: Finished difference Result 516 states and 554 transitions. [2018-04-11 20:08:25,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-04-11 20:08:25,005 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 233 [2018-04-11 20:08:25,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:08:25,007 INFO L225 Difference]: With dead ends: 516 [2018-04-11 20:08:25,007 INFO L226 Difference]: Without dead ends: 330 [2018-04-11 20:08:25,009 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 371 SyntacticMatches, 24 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4520 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2541, Invalid=13971, Unknown=0, NotChecked=0, Total=16512 [2018-04-11 20:08:25,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-04-11 20:08:25,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 322. [2018-04-11 20:08:25,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-04-11 20:08:25,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 346 transitions. [2018-04-11 20:08:25,046 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 346 transitions. Word has length 233 [2018-04-11 20:08:25,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:08:25,046 INFO L459 AbstractCegarLoop]: Abstraction has 322 states and 346 transitions. [2018-04-11 20:08:25,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-04-11 20:08:25,047 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 346 transitions. [2018-04-11 20:08:25,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-04-11 20:08:25,048 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:08:25,049 INFO L355 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:08:25,049 INFO L408 AbstractCegarLoop]: === Iteration 31 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:08:25,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1831879986, now seen corresponding path program 22 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:08:25,057 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:08:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:08:25,101 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:08:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 627 proven. 596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:26,259 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:08:27,028 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 17 treesize of output 15 [2018-04-11 20:08:27,028 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:08:27,065 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 19 treesize of output 15 [2018-04-11 20:08:27,065 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:08:27,067 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:08:27,067 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:08:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 627 proven. 596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:28,741 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:08:28,741 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2018-04-11 20:08:28,742 INFO L442 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-04-11 20:08:28,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-04-11 20:08:28,742 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=894, Invalid=9006, Unknown=0, NotChecked=0, Total=9900 [2018-04-11 20:08:28,743 INFO L87 Difference]: Start difference. First operand 322 states and 346 transitions. Second operand 100 states. [2018-04-11 20:08:33,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:08:33,025 INFO L93 Difference]: Finished difference Result 358 states and 385 transitions. [2018-04-11 20:08:33,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-04-11 20:08:33,025 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 243 [2018-04-11 20:08:33,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:08:33,027 INFO L225 Difference]: With dead ends: 358 [2018-04-11 20:08:33,027 INFO L226 Difference]: Without dead ends: 357 [2018-04-11 20:08:33,028 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7319 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4495, Invalid=24917, Unknown=0, NotChecked=0, Total=29412 [2018-04-11 20:08:33,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-04-11 20:08:33,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 337. [2018-04-11 20:08:33,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-04-11 20:08:33,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 362 transitions. [2018-04-11 20:08:33,070 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 362 transitions. Word has length 243 [2018-04-11 20:08:33,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:08:33,070 INFO L459 AbstractCegarLoop]: Abstraction has 337 states and 362 transitions. [2018-04-11 20:08:33,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-04-11 20:08:33,070 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 362 transitions. [2018-04-11 20:08:33,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-04-11 20:08:33,071 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:08:33,071 INFO L355 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:08:33,072 INFO L408 AbstractCegarLoop]: === Iteration 32 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:08:33,072 INFO L82 PathProgramCache]: Analyzing trace with hash -2044015235, now seen corresponding path program 23 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:08:33,077 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:08:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:08:33,119 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:08:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 642 proven. 684 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:33,759 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:08:34,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 642 proven. 684 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:34,510 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:08:34,511 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 78 [2018-04-11 20:08:34,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-04-11 20:08:34,511 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-04-11 20:08:34,512 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=779, Invalid=5227, Unknown=0, NotChecked=0, Total=6006 [2018-04-11 20:08:34,512 INFO L87 Difference]: Start difference. First operand 337 states and 362 transitions. Second operand 78 states. [2018-04-11 20:08:36,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:08:36,281 INFO L93 Difference]: Finished difference Result 557 states and 598 transitions. [2018-04-11 20:08:36,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-04-11 20:08:36,281 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 252 [2018-04-11 20:08:36,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:08:36,282 INFO L225 Difference]: With dead ends: 557 [2018-04-11 20:08:36,283 INFO L226 Difference]: Without dead ends: 356 [2018-04-11 20:08:36,284 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 401 SyntacticMatches, 26 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5369 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2968, Invalid=16492, Unknown=0, NotChecked=0, Total=19460 [2018-04-11 20:08:36,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-04-11 20:08:36,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 348. [2018-04-11 20:08:36,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-04-11 20:08:36,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 374 transitions. [2018-04-11 20:08:36,318 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 374 transitions. Word has length 252 [2018-04-11 20:08:36,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:08:36,318 INFO L459 AbstractCegarLoop]: Abstraction has 348 states and 374 transitions. [2018-04-11 20:08:36,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-04-11 20:08:36,318 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 374 transitions. [2018-04-11 20:08:36,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-04-11 20:08:36,319 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:08:36,319 INFO L355 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:08:36,319 INFO L408 AbstractCegarLoop]: === Iteration 33 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:08:36,320 INFO L82 PathProgramCache]: Analyzing trace with hash 15138828, now seen corresponding path program 24 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:08:36,325 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:08:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:08:36,380 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:08:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1448 backedges. 744 proven. 704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:38,018 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:08:38,915 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 17 treesize of output 15 [2018-04-11 20:08:38,915 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:08:38,920 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 19 treesize of output 15 [2018-04-11 20:08:38,921 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:08:38,923 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:08:38,923 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:08:40,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1448 backedges. 744 proven. 704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:40,930 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:08:40,931 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 107 [2018-04-11 20:08:40,931 INFO L442 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-04-11 20:08:40,931 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-04-11 20:08:40,932 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1020, Invalid=10536, Unknown=0, NotChecked=0, Total=11556 [2018-04-11 20:08:40,932 INFO L87 Difference]: Start difference. First operand 348 states and 374 transitions. Second operand 108 states. [2018-04-11 20:08:45,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:08:45,902 INFO L93 Difference]: Finished difference Result 384 states and 413 transitions. [2018-04-11 20:08:45,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-04-11 20:08:45,902 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 262 [2018-04-11 20:08:45,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:08:45,903 INFO L225 Difference]: With dead ends: 384 [2018-04-11 20:08:45,903 INFO L226 Difference]: Without dead ends: 383 [2018-04-11 20:08:45,904 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8630 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=5182, Invalid=29228, Unknown=0, NotChecked=0, Total=34410 [2018-04-11 20:08:45,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-04-11 20:08:45,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 363. [2018-04-11 20:08:45,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-04-11 20:08:45,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 390 transitions. [2018-04-11 20:08:45,963 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 390 transitions. Word has length 262 [2018-04-11 20:08:45,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:08:45,963 INFO L459 AbstractCegarLoop]: Abstraction has 363 states and 390 transitions. [2018-04-11 20:08:45,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-04-11 20:08:45,963 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 390 transitions. [2018-04-11 20:08:45,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-04-11 20:08:45,965 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:08:45,965 INFO L355 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:08:45,965 INFO L408 AbstractCegarLoop]: === Iteration 34 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:08:45,965 INFO L82 PathProgramCache]: Analyzing trace with hash 569354211, now seen corresponding path program 25 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:08:45,978 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:08:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:08:46,031 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:08:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 754 proven. 806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:46,744 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:08:47,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 754 proven. 806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:47,620 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:08:47,621 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 84 [2018-04-11 20:08:47,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-04-11 20:08:47,621 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-04-11 20:08:47,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=895, Invalid=6077, Unknown=0, NotChecked=0, Total=6972 [2018-04-11 20:08:47,622 INFO L87 Difference]: Start difference. First operand 363 states and 390 transitions. Second operand 84 states. [2018-04-11 20:08:49,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:08:49,633 INFO L93 Difference]: Finished difference Result 598 states and 642 transitions. [2018-04-11 20:08:49,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-04-11 20:08:49,649 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 271 [2018-04-11 20:08:49,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:08:49,650 INFO L225 Difference]: With dead ends: 598 [2018-04-11 20:08:49,650 INFO L226 Difference]: Without dead ends: 382 [2018-04-11 20:08:49,651 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 431 SyntacticMatches, 28 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6291 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3428, Invalid=19222, Unknown=0, NotChecked=0, Total=22650 [2018-04-11 20:08:49,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-04-11 20:08:49,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 374. [2018-04-11 20:08:49,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2018-04-11 20:08:49,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 402 transitions. [2018-04-11 20:08:49,697 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 402 transitions. Word has length 271 [2018-04-11 20:08:49,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:08:49,697 INFO L459 AbstractCegarLoop]: Abstraction has 374 states and 402 transitions. [2018-04-11 20:08:49,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-04-11 20:08:49,697 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 402 transitions. [2018-04-11 20:08:49,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-04-11 20:08:49,699 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:08:49,699 INFO L355 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:08:49,699 INFO L408 AbstractCegarLoop]: === Iteration 35 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:08:49,699 INFO L82 PathProgramCache]: Analyzing trace with hash -721881868, now seen corresponding path program 26 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:08:49,709 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:08:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:08:49,765 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:08:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1692 backedges. 871 proven. 821 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:51,351 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:08:52,344 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 19 treesize of output 15 [2018-04-11 20:08:52,344 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:08:52,349 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 17 treesize of output 15 [2018-04-11 20:08:52,349 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:08:52,351 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:08:52,351 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:08:54,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1692 backedges. 871 proven. 821 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:08:54,739 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:08:54,749 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 115 [2018-04-11 20:08:54,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-04-11 20:08:54,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-04-11 20:08:54,750 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1154, Invalid=12186, Unknown=0, NotChecked=0, Total=13340 [2018-04-11 20:08:54,750 INFO L87 Difference]: Start difference. First operand 374 states and 402 transitions. Second operand 116 states. [2018-04-11 20:09:00,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:09:00,610 INFO L93 Difference]: Finished difference Result 410 states and 441 transitions. [2018-04-11 20:09:00,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-04-11 20:09:00,611 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 281 [2018-04-11 20:09:00,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:09:00,612 INFO L225 Difference]: With dead ends: 410 [2018-04-11 20:09:00,612 INFO L226 Difference]: Without dead ends: 409 [2018-04-11 20:09:00,613 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10049 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=5917, Invalid=33883, Unknown=0, NotChecked=0, Total=39800 [2018-04-11 20:09:00,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-04-11 20:09:00,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 389. [2018-04-11 20:09:00,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-04-11 20:09:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 418 transitions. [2018-04-11 20:09:00,652 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 418 transitions. Word has length 281 [2018-04-11 20:09:00,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:09:00,652 INFO L459 AbstractCegarLoop]: Abstraction has 389 states and 418 transitions. [2018-04-11 20:09:00,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-04-11 20:09:00,652 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 418 transitions. [2018-04-11 20:09:00,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-04-11 20:09:00,654 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:09:00,654 INFO L355 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:09:00,654 INFO L408 AbstractCegarLoop]: === Iteration 36 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:09:00,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1285638149, now seen corresponding path program 27 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:09:00,660 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:09:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:09:00,713 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:09:01,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 875 proven. 938 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:09:01,515 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:09:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 875 proven. 938 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:09:02,507 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:09:02,507 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 90 [2018-04-11 20:09:02,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-04-11 20:09:02,508 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-04-11 20:09:02,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1019, Invalid=6991, Unknown=0, NotChecked=0, Total=8010 [2018-04-11 20:09:02,508 INFO L87 Difference]: Start difference. First operand 389 states and 418 transitions. Second operand 90 states. [2018-04-11 20:09:04,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:09:04,759 INFO L93 Difference]: Finished difference Result 639 states and 686 transitions. [2018-04-11 20:09:04,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-04-11 20:09:04,760 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 290 [2018-04-11 20:09:04,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:09:04,761 INFO L225 Difference]: With dead ends: 639 [2018-04-11 20:09:04,761 INFO L226 Difference]: Without dead ends: 408 [2018-04-11 20:09:04,762 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 461 SyntacticMatches, 30 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7286 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3921, Invalid=22161, Unknown=0, NotChecked=0, Total=26082 [2018-04-11 20:09:04,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2018-04-11 20:09:04,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 400. [2018-04-11 20:09:04,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2018-04-11 20:09:04,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 430 transitions. [2018-04-11 20:09:04,801 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 430 transitions. Word has length 290 [2018-04-11 20:09:04,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:09:04,801 INFO L459 AbstractCegarLoop]: Abstraction has 400 states and 430 transitions. [2018-04-11 20:09:04,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-04-11 20:09:04,801 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 430 transitions. [2018-04-11 20:09:04,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-04-11 20:09:04,802 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:09:04,803 INFO L355 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:09:04,803 INFO L408 AbstractCegarLoop]: === Iteration 37 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:09:04,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1192261814, now seen corresponding path program 28 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:09:04,812 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:09:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:09:04,875 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:09:06,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1955 backedges. 1008 proven. 947 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:09:06,472 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:09:07,641 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 19 treesize of output 15 [2018-04-11 20:09:07,641 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:09:07,646 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 17 treesize of output 15 [2018-04-11 20:09:07,647 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:09:07,649 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:09:07,649 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:09:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1955 backedges. 1008 proven. 947 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:09:10,238 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:09:10,238 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 123 [2018-04-11 20:09:10,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-04-11 20:09:10,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-04-11 20:09:10,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1296, Invalid=13956, Unknown=0, NotChecked=0, Total=15252 [2018-04-11 20:09:10,239 INFO L87 Difference]: Start difference. First operand 400 states and 430 transitions. Second operand 124 states. [2018-04-11 20:09:16,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:09:16,800 INFO L93 Difference]: Finished difference Result 436 states and 469 transitions. [2018-04-11 20:09:16,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-04-11 20:09:16,800 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 300 [2018-04-11 20:09:16,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:09:16,801 INFO L225 Difference]: With dead ends: 436 [2018-04-11 20:09:16,801 INFO L226 Difference]: Without dead ends: 435 [2018-04-11 20:09:16,802 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11576 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=6700, Invalid=38882, Unknown=0, NotChecked=0, Total=45582 [2018-04-11 20:09:16,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-04-11 20:09:16,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 415. [2018-04-11 20:09:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-04-11 20:09:16,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 446 transitions. [2018-04-11 20:09:16,859 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 446 transitions. Word has length 300 [2018-04-11 20:09:16,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:09:16,859 INFO L459 AbstractCegarLoop]: Abstraction has 415 states and 446 transitions. [2018-04-11 20:09:16,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-04-11 20:09:16,860 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 446 transitions. [2018-04-11 20:09:16,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-04-11 20:09:16,861 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:09:16,861 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:09:16,861 INFO L408 AbstractCegarLoop]: === Iteration 38 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:09:16,861 INFO L82 PathProgramCache]: Analyzing trace with hash -682072475, now seen corresponding path program 29 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:09:16,867 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:09:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:09:16,947 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:09:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2085 backedges. 1005 proven. 1080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:09:17,964 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:09:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2085 backedges. 1005 proven. 1080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:09:19,088 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:09:19,088 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 96 [2018-04-11 20:09:19,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-04-11 20:09:19,089 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-04-11 20:09:19,089 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1151, Invalid=7969, Unknown=0, NotChecked=0, Total=9120 [2018-04-11 20:09:19,089 INFO L87 Difference]: Start difference. First operand 415 states and 446 transitions. Second operand 96 states. [2018-04-11 20:09:21,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:09:21,653 INFO L93 Difference]: Finished difference Result 680 states and 730 transitions. [2018-04-11 20:09:21,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-04-11 20:09:21,653 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 309 [2018-04-11 20:09:21,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:09:21,655 INFO L225 Difference]: With dead ends: 680 [2018-04-11 20:09:21,655 INFO L226 Difference]: Without dead ends: 434 [2018-04-11 20:09:21,656 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 491 SyntacticMatches, 32 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8354 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4447, Invalid=25309, Unknown=0, NotChecked=0, Total=29756 [2018-04-11 20:09:21,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-04-11 20:09:21,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 426. [2018-04-11 20:09:21,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2018-04-11 20:09:21,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 458 transitions. [2018-04-11 20:09:21,727 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 458 transitions. Word has length 309 [2018-04-11 20:09:21,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:09:21,727 INFO L459 AbstractCegarLoop]: Abstraction has 426 states and 458 transitions. [2018-04-11 20:09:21,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-04-11 20:09:21,727 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 458 transitions. [2018-04-11 20:09:21,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-04-11 20:09:21,728 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:09:21,729 INFO L355 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:09:21,729 INFO L408 AbstractCegarLoop]: === Iteration 39 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:09:21,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1626317130, now seen corresponding path program 30 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:09:21,737 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:09:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:09:21,791 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:09:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2237 backedges. 1155 proven. 1082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:09:23,537 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:09:24,832 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 19 treesize of output 15 [2018-04-11 20:09:24,832 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:09:24,837 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2018-04-11 20:09:24,838 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:09:24,840 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:09:24,840 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:09:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2237 backedges. 1155 proven. 1082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:09:27,751 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:09:27,751 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 131 [2018-04-11 20:09:27,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-04-11 20:09:27,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-04-11 20:09:27,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1446, Invalid=15846, Unknown=0, NotChecked=0, Total=17292 [2018-04-11 20:09:27,752 INFO L87 Difference]: Start difference. First operand 426 states and 458 transitions. Second operand 132 states. [2018-04-11 20:09:34,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:09:34,724 INFO L93 Difference]: Finished difference Result 462 states and 497 transitions. [2018-04-11 20:09:34,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-04-11 20:09:34,724 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 319 [2018-04-11 20:09:34,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:09:34,727 INFO L225 Difference]: With dead ends: 462 [2018-04-11 20:09:34,727 INFO L226 Difference]: Without dead ends: 461 [2018-04-11 20:09:34,729 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13211 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=7531, Invalid=44225, Unknown=0, NotChecked=0, Total=51756 [2018-04-11 20:09:34,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-04-11 20:09:34,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 441. [2018-04-11 20:09:34,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2018-04-11 20:09:34,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 474 transitions. [2018-04-11 20:09:34,791 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 474 transitions. Word has length 319 [2018-04-11 20:09:34,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:09:34,791 INFO L459 AbstractCegarLoop]: Abstraction has 441 states and 474 transitions. [2018-04-11 20:09:34,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-04-11 20:09:34,791 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 474 transitions. [2018-04-11 20:09:34,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-04-11 20:09:34,793 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:09:34,793 INFO L355 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:09:34,793 INFO L408 AbstractCegarLoop]: === Iteration 40 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:09:34,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1842009991, now seen corresponding path program 31 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:09:34,802 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:09:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:09:34,858 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:09:35,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2376 backedges. 1144 proven. 1232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:09:35,858 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:09:37,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2376 backedges. 1144 proven. 1232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:09:37,115 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:09:37,115 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 102 [2018-04-11 20:09:37,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-04-11 20:09:37,116 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-04-11 20:09:37,116 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1291, Invalid=9011, Unknown=0, NotChecked=0, Total=10302 [2018-04-11 20:09:37,117 INFO L87 Difference]: Start difference. First operand 441 states and 474 transitions. Second operand 102 states. [2018-04-11 20:09:40,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:09:40,115 INFO L93 Difference]: Finished difference Result 721 states and 774 transitions. [2018-04-11 20:09:40,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-04-11 20:09:40,115 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 328 [2018-04-11 20:09:40,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:09:40,117 INFO L225 Difference]: With dead ends: 721 [2018-04-11 20:09:40,117 INFO L226 Difference]: Without dead ends: 460 [2018-04-11 20:09:40,118 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 521 SyntacticMatches, 34 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9495 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5006, Invalid=28666, Unknown=0, NotChecked=0, Total=33672 [2018-04-11 20:09:40,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2018-04-11 20:09:40,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 452. [2018-04-11 20:09:40,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2018-04-11 20:09:40,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 486 transitions. [2018-04-11 20:09:40,166 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 486 transitions. Word has length 328 [2018-04-11 20:09:40,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:09:40,166 INFO L459 AbstractCegarLoop]: Abstraction has 452 states and 486 transitions. [2018-04-11 20:09:40,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-04-11 20:09:40,167 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 486 transitions. [2018-04-11 20:09:40,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-04-11 20:09:40,168 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:09:40,168 INFO L355 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:09:40,168 INFO L408 AbstractCegarLoop]: === Iteration 41 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:09:40,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1157692280, now seen corresponding path program 32 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:09:40,174 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:09:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:09:40,232 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:09:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2538 backedges. 1312 proven. 1226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:09:42,163 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:09:43,589 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 17 treesize of output 15 [2018-04-11 20:09:43,589 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:09:43,595 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 19 treesize of output 15 [2018-04-11 20:09:43,595 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:09:43,597 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:09:43,597 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:09:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2538 backedges. 1312 proven. 1226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:09:46,812 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:09:46,813 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 139 [2018-04-11 20:09:46,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-04-11 20:09:46,814 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-04-11 20:09:46,814 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1604, Invalid=17856, Unknown=0, NotChecked=0, Total=19460 [2018-04-11 20:09:46,814 INFO L87 Difference]: Start difference. First operand 452 states and 486 transitions. Second operand 140 states. [2018-04-11 20:09:54,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:09:54,977 INFO L93 Difference]: Finished difference Result 488 states and 525 transitions. [2018-04-11 20:09:54,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-04-11 20:09:54,977 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 338 [2018-04-11 20:09:54,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:09:54,979 INFO L225 Difference]: With dead ends: 488 [2018-04-11 20:09:54,979 INFO L226 Difference]: Without dead ends: 487 [2018-04-11 20:09:54,980 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14954 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=8410, Invalid=49912, Unknown=0, NotChecked=0, Total=58322 [2018-04-11 20:09:54,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-04-11 20:09:55,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 467. [2018-04-11 20:09:55,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2018-04-11 20:09:55,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 502 transitions. [2018-04-11 20:09:55,030 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 502 transitions. Word has length 338 [2018-04-11 20:09:55,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:09:55,030 INFO L459 AbstractCegarLoop]: Abstraction has 467 states and 502 transitions. [2018-04-11 20:09:55,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-04-11 20:09:55,030 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 502 transitions. [2018-04-11 20:09:55,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-04-11 20:09:55,031 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:09:55,031 INFO L355 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:09:55,031 INFO L408 AbstractCegarLoop]: === Iteration 42 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:09:55,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1137774873, now seen corresponding path program 33 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:09:55,037 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:09:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:09:55,101 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:09:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2686 backedges. 1292 proven. 1394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:09:56,273 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:09:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2686 backedges. 1292 proven. 1394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:09:57,691 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:09:57,692 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 108 [2018-04-11 20:09:57,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-04-11 20:09:57,693 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-04-11 20:09:57,693 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1439, Invalid=10117, Unknown=0, NotChecked=0, Total=11556 [2018-04-11 20:09:57,693 INFO L87 Difference]: Start difference. First operand 467 states and 502 transitions. Second operand 108 states. [2018-04-11 20:10:01,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:10:01,119 INFO L93 Difference]: Finished difference Result 762 states and 818 transitions. [2018-04-11 20:10:01,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-04-11 20:10:01,120 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 347 [2018-04-11 20:10:01,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:10:01,121 INFO L225 Difference]: With dead ends: 762 [2018-04-11 20:10:01,121 INFO L226 Difference]: Without dead ends: 486 [2018-04-11 20:10:01,123 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 551 SyntacticMatches, 36 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10709 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=5598, Invalid=32232, Unknown=0, NotChecked=0, Total=37830 [2018-04-11 20:10:01,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2018-04-11 20:10:01,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 478. [2018-04-11 20:10:01,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2018-04-11 20:10:01,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 514 transitions. [2018-04-11 20:10:01,173 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 514 transitions. Word has length 347 [2018-04-11 20:10:01,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:10:01,174 INFO L459 AbstractCegarLoop]: Abstraction has 478 states and 514 transitions. [2018-04-11 20:10:01,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-04-11 20:10:01,174 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 514 transitions. [2018-04-11 20:10:01,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-04-11 20:10:01,175 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:10:01,175 INFO L355 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:10:01,175 INFO L408 AbstractCegarLoop]: === Iteration 43 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:10:01,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1954864520, now seen corresponding path program 34 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:10:01,181 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:10:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:10:01,236 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:10:03,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2858 backedges. 1479 proven. 1379 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:10:03,378 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:10:04,978 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 17 treesize of output 15 [2018-04-11 20:10:04,979 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:10:04,984 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 19 treesize of output 15 [2018-04-11 20:10:04,985 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:10:04,987 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:10:04,987 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:10:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2858 backedges. 1479 proven. 1379 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:10:08,824 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:10:08,840 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 147 [2018-04-11 20:10:08,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-04-11 20:10:08,841 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-04-11 20:10:08,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=19986, Unknown=0, NotChecked=0, Total=21756 [2018-04-11 20:10:08,841 INFO L87 Difference]: Start difference. First operand 478 states and 514 transitions. Second operand 148 states. [2018-04-11 20:10:17,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:10:17,422 INFO L93 Difference]: Finished difference Result 514 states and 553 transitions. [2018-04-11 20:10:17,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-04-11 20:10:17,422 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 357 [2018-04-11 20:10:17,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:10:17,424 INFO L225 Difference]: With dead ends: 514 [2018-04-11 20:10:17,424 INFO L226 Difference]: Without dead ends: 513 [2018-04-11 20:10:17,425 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 821 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16805 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=9337, Invalid=55943, Unknown=0, NotChecked=0, Total=65280 [2018-04-11 20:10:17,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2018-04-11 20:10:17,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 493. [2018-04-11 20:10:17,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2018-04-11 20:10:17,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 530 transitions. [2018-04-11 20:10:17,480 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 530 transitions. Word has length 357 [2018-04-11 20:10:17,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:10:17,480 INFO L459 AbstractCegarLoop]: Abstraction has 493 states and 530 transitions. [2018-04-11 20:10:17,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-04-11 20:10:17,480 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 530 transitions. [2018-04-11 20:10:17,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-04-11 20:10:17,481 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:10:17,481 INFO L355 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:10:17,481 INFO L408 AbstractCegarLoop]: === Iteration 44 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:10:17,482 INFO L82 PathProgramCache]: Analyzing trace with hash 232619767, now seen corresponding path program 35 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:10:17,487 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:10:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:10:17,545 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:10:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 1449 proven. 1566 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:10:18,770 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:10:20,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 1449 proven. 1566 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:10:20,305 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:10:20,306 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 114 [2018-04-11 20:10:20,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-04-11 20:10:20,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-04-11 20:10:20,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1595, Invalid=11287, Unknown=0, NotChecked=0, Total=12882 [2018-04-11 20:10:20,307 INFO L87 Difference]: Start difference. First operand 493 states and 530 transitions. Second operand 114 states. [2018-04-11 20:10:23,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:10:23,812 INFO L93 Difference]: Finished difference Result 803 states and 862 transitions. [2018-04-11 20:10:23,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-04-11 20:10:23,812 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 366 [2018-04-11 20:10:23,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:10:23,814 INFO L225 Difference]: With dead ends: 803 [2018-04-11 20:10:23,814 INFO L226 Difference]: Without dead ends: 512 [2018-04-11 20:10:23,815 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 823 GetRequests, 581 SyntacticMatches, 38 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11996 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=6223, Invalid=36007, Unknown=0, NotChecked=0, Total=42230 [2018-04-11 20:10:23,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2018-04-11 20:10:23,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 504. [2018-04-11 20:10:23,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2018-04-11 20:10:23,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 542 transitions. [2018-04-11 20:10:23,872 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 542 transitions. Word has length 366 [2018-04-11 20:10:23,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:10:23,872 INFO L459 AbstractCegarLoop]: Abstraction has 504 states and 542 transitions. [2018-04-11 20:10:23,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-04-11 20:10:23,872 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 542 transitions. [2018-04-11 20:10:23,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-04-11 20:10:23,873 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:10:23,874 INFO L355 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:10:23,874 INFO L408 AbstractCegarLoop]: === Iteration 45 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:10:23,874 INFO L82 PathProgramCache]: Analyzing trace with hash -210708538, now seen corresponding path program 36 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:10:23,879 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:10:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:10:23,941 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:10:26,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 1656 proven. 1541 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:10:26,247 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:10:28,014 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 19 treesize of output 15 [2018-04-11 20:10:28,015 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:10:28,019 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 17 treesize of output 15 [2018-04-11 20:10:28,020 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:10:28,022 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:10:28,022 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:10:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 1656 proven. 1541 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:10:32,017 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:10:32,019 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 155 [2018-04-11 20:10:32,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-04-11 20:10:32,019 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-04-11 20:10:32,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1944, Invalid=22236, Unknown=0, NotChecked=0, Total=24180 [2018-04-11 20:10:32,020 INFO L87 Difference]: Start difference. First operand 504 states and 542 transitions. Second operand 156 states. [2018-04-11 20:10:41,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:10:41,246 INFO L93 Difference]: Finished difference Result 540 states and 581 transitions. [2018-04-11 20:10:41,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-04-11 20:10:41,247 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 376 [2018-04-11 20:10:41,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:10:41,248 INFO L225 Difference]: With dead ends: 540 [2018-04-11 20:10:41,248 INFO L226 Difference]: Without dead ends: 539 [2018-04-11 20:10:41,250 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 865 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18764 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=10312, Invalid=62318, Unknown=0, NotChecked=0, Total=72630 [2018-04-11 20:10:41,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2018-04-11 20:10:41,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 519. [2018-04-11 20:10:41,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2018-04-11 20:10:41,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 558 transitions. [2018-04-11 20:10:41,322 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 558 transitions. Word has length 376 [2018-04-11 20:10:41,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:10:41,322 INFO L459 AbstractCegarLoop]: Abstraction has 519 states and 558 transitions. [2018-04-11 20:10:41,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-04-11 20:10:41,322 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 558 transitions. [2018-04-11 20:10:41,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-04-11 20:10:41,323 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:10:41,324 INFO L355 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:10:41,324 INFO L408 AbstractCegarLoop]: === Iteration 46 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:10:41,324 INFO L82 PathProgramCache]: Analyzing trace with hash 618914153, now seen corresponding path program 37 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:10:41,329 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:10:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:10:41,390 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:10:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3363 backedges. 1615 proven. 1748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:10:42,736 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:10:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3363 backedges. 1615 proven. 1748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:10:44,433 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:10:44,433 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 120 [2018-04-11 20:10:44,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-04-11 20:10:44,434 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-04-11 20:10:44,435 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1759, Invalid=12521, Unknown=0, NotChecked=0, Total=14280 [2018-04-11 20:10:44,435 INFO L87 Difference]: Start difference. First operand 519 states and 558 transitions. Second operand 120 states. [2018-04-11 20:10:48,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:10:48,602 INFO L93 Difference]: Finished difference Result 844 states and 906 transitions. [2018-04-11 20:10:48,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-04-11 20:10:48,602 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 385 [2018-04-11 20:10:48,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:10:48,604 INFO L225 Difference]: With dead ends: 844 [2018-04-11 20:10:48,604 INFO L226 Difference]: Without dead ends: 538 [2018-04-11 20:10:48,606 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 611 SyntacticMatches, 40 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13356 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=6881, Invalid=39991, Unknown=0, NotChecked=0, Total=46872 [2018-04-11 20:10:48,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2018-04-11 20:10:48,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 530. [2018-04-11 20:10:48,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-04-11 20:10:48,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 570 transitions. [2018-04-11 20:10:48,678 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 570 transitions. Word has length 385 [2018-04-11 20:10:48,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:10:48,678 INFO L459 AbstractCegarLoop]: Abstraction has 530 states and 570 transitions. [2018-04-11 20:10:48,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-04-11 20:10:48,678 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 570 transitions. [2018-04-11 20:10:48,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-04-11 20:10:48,679 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:10:48,679 INFO L355 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:10:48,679 INFO L408 AbstractCegarLoop]: === Iteration 47 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:10:48,680 INFO L82 PathProgramCache]: Analyzing trace with hash 637395002, now seen corresponding path program 38 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:10:48,685 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:10:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:10:48,746 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:10:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3555 backedges. 1843 proven. 1712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:10:51,314 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:10:53,249 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 17 treesize of output 15 [2018-04-11 20:10:53,249 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:10:53,254 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 19 treesize of output 15 [2018-04-11 20:10:53,254 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:10:53,257 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:10:53,257 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-11 20:10:57,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3555 backedges. 1843 proven. 1712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:10:57,657 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:10:57,657 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 163 [2018-04-11 20:10:57,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-04-11 20:10:57,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-04-11 20:10:57,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2126, Invalid=24606, Unknown=0, NotChecked=0, Total=26732 [2018-04-11 20:10:57,658 INFO L87 Difference]: Start difference. First operand 530 states and 570 transitions. Second operand 164 states. [2018-04-11 20:11:08,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:11:08,451 INFO L93 Difference]: Finished difference Result 566 states and 609 transitions. [2018-04-11 20:11:08,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-04-11 20:11:08,451 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 395 [2018-04-11 20:11:08,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:11:08,452 INFO L225 Difference]: With dead ends: 566 [2018-04-11 20:11:08,453 INFO L226 Difference]: Without dead ends: 565 [2018-04-11 20:11:08,454 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 909 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20831 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=11335, Invalid=69037, Unknown=0, NotChecked=0, Total=80372 [2018-04-11 20:11:08,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2018-04-11 20:11:08,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 545. [2018-04-11 20:11:08,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2018-04-11 20:11:08,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 586 transitions. [2018-04-11 20:11:08,520 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 586 transitions. Word has length 395 [2018-04-11 20:11:08,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:11:08,520 INFO L459 AbstractCegarLoop]: Abstraction has 545 states and 586 transitions. [2018-04-11 20:11:08,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-04-11 20:11:08,520 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 586 transitions. [2018-04-11 20:11:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-04-11 20:11:08,521 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:11:08,521 INFO L355 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:11:08,522 INFO L408 AbstractCegarLoop]: === Iteration 48 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:11:08,522 INFO L82 PathProgramCache]: Analyzing trace with hash 2110200693, now seen corresponding path program 39 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:11:08,527 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:11:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:11:08,586 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:11:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3730 backedges. 1790 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:11:10,063 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:11:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3730 backedges. 1790 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:11:11,928 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:11:11,928 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 126 [2018-04-11 20:11:11,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-04-11 20:11:11,929 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-04-11 20:11:11,930 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1931, Invalid=13819, Unknown=0, NotChecked=0, Total=15750 [2018-04-11 20:11:11,930 INFO L87 Difference]: Start difference. First operand 545 states and 586 transitions. Second operand 126 states. [2018-04-11 20:11:16,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:11:16,202 INFO L93 Difference]: Finished difference Result 885 states and 950 transitions. [2018-04-11 20:11:16,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-04-11 20:11:16,202 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 404 [2018-04-11 20:11:16,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:11:16,204 INFO L225 Difference]: With dead ends: 885 [2018-04-11 20:11:16,204 INFO L226 Difference]: Without dead ends: 564 [2018-04-11 20:11:16,206 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 909 GetRequests, 641 SyntacticMatches, 42 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14789 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=7572, Invalid=44184, Unknown=0, NotChecked=0, Total=51756 [2018-04-11 20:11:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2018-04-11 20:11:16,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 556. [2018-04-11 20:11:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2018-04-11 20:11:16,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 598 transitions. [2018-04-11 20:11:16,272 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 598 transitions. Word has length 404 [2018-04-11 20:11:16,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:11:16,273 INFO L459 AbstractCegarLoop]: Abstraction has 556 states and 598 transitions. [2018-04-11 20:11:16,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-04-11 20:11:16,273 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 598 transitions. [2018-04-11 20:11:16,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-04-11 20:11:16,274 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:11:16,274 INFO L355 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:11:16,274 INFO L408 AbstractCegarLoop]: === Iteration 49 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-11 20:11:16,275 INFO L82 PathProgramCache]: Analyzing trace with hash 2044748036, now seen corresponding path program 40 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:11:16,280 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:11:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:11:16,347 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:11:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3932 backedges. 2040 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:11:19,122 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:11:21,219 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2018-04-11 20:11:21,219 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:11:21,259 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 19 treesize of output 15 [2018-04-11 20:11:21,259 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:11:21,261 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:11:21,261 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 Received shutdown request... [2018-04-11 20:11:22,491 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-04-11 20:11:22,492 WARN L519 AbstractCegarLoop]: Verification canceled [2018-04-11 20:11:22,495 WARN L197 ceAbstractionStarter]: Timeout [2018-04-11 20:11:22,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.04 08:11:22 BoogieIcfgContainer [2018-04-11 20:11:22,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-11 20:11:22,496 INFO L168 Benchmark]: Toolchain (without parser) took 230512.19 ms. Allocated memory was 305.7 MB in the beginning and 1.0 GB in the end (delta: 736.1 MB). Free memory was 243.4 MB in the beginning and 754.0 MB in the end (delta: -510.5 MB). Peak memory consumption was 225.6 MB. Max. memory is 5.3 GB. [2018-04-11 20:11:22,497 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 305.7 MB. Free memory is still 267.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-11 20:11:22,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.79 ms. Allocated memory is still 305.7 MB. Free memory was 243.4 MB in the beginning and 219.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 5.3 GB. [2018-04-11 20:11:22,498 INFO L168 Benchmark]: Boogie Preprocessor took 53.06 ms. Allocated memory is still 305.7 MB. Free memory was 219.3 MB in the beginning and 217.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-04-11 20:11:22,498 INFO L168 Benchmark]: RCFGBuilder took 513.69 ms. Allocated memory was 305.7 MB in the beginning and 469.8 MB in the end (delta: 164.1 MB). Free memory was 217.4 MB in the beginning and 407.3 MB in the end (delta: -189.9 MB). Peak memory consumption was 22.1 MB. Max. memory is 5.3 GB. [2018-04-11 20:11:22,498 INFO L168 Benchmark]: TraceAbstraction took 229635.76 ms. Allocated memory was 469.8 MB in the beginning and 1.0 GB in the end (delta: 572.0 MB). Free memory was 407.3 MB in the beginning and 754.0 MB in the end (delta: -346.7 MB). Peak memory consumption was 225.3 MB. Max. memory is 5.3 GB. [2018-04-11 20:11:22,500 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 305.7 MB. Free memory is still 267.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 305.79 ms. Allocated memory is still 305.7 MB. Free memory was 243.4 MB in the beginning and 219.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 53.06 ms. Allocated memory is still 305.7 MB. Free memory was 219.3 MB in the beginning and 217.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 513.69 ms. Allocated memory was 305.7 MB in the beginning and 469.8 MB in the end (delta: 164.1 MB). Free memory was 217.4 MB in the beginning and 407.3 MB in the end (delta: -189.9 MB). Peak memory consumption was 22.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 229635.76 ms. Allocated memory was 469.8 MB in the beginning and 1.0 GB in the end (delta: 572.0 MB). Free memory was 407.3 MB in the beginning and 754.0 MB in the end (delta: -346.7 MB). Peak memory consumption was 225.3 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 556]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 556). Cancelled while BasicCegarLoop was analyzing trace of length 415 with TraceHistMax 22, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 142 known predicates. - TimeoutResultAtElement [Line: 555]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 555). Cancelled while BasicCegarLoop was analyzing trace of length 415 with TraceHistMax 22, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 142 known predicates. - TimeoutResultAtElement [Line: 540]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 540). Cancelled while BasicCegarLoop was analyzing trace of length 415 with TraceHistMax 22, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 142 known predicates. - TimeoutResultAtElement [Line: 552]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 552). Cancelled while BasicCegarLoop was analyzing trace of length 415 with TraceHistMax 22, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 142 known predicates. - TimeoutResultAtElement [Line: 556]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 556). Cancelled while BasicCegarLoop was analyzing trace of length 415 with TraceHistMax 22, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 142 known predicates. - TimeoutResultAtElement [Line: 555]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 555). Cancelled while BasicCegarLoop was analyzing trace of length 415 with TraceHistMax 22, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 142 known predicates. - TimeoutResultAtElement [Line: 556]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 556). Cancelled while BasicCegarLoop was analyzing trace of length 415 with TraceHistMax 22, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 142 known predicates. - TimeoutResultAtElement [Line: 556]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 556). Cancelled while BasicCegarLoop was analyzing trace of length 415 with TraceHistMax 22, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 142 known predicates. - TimeoutResultAtElement [Line: 552]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 552). Cancelled while BasicCegarLoop was analyzing trace of length 415 with TraceHistMax 22, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 142 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 74 locations, 9 error locations. TIMEOUT Result, 229.5s OverallTime, 49 OverallIterations, 22 TraceHistogramMax, 119.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7305 SDtfs, 49420 SDslu, 196173 SDs, 0 SdLazy, 115564 SolverSat, 3903 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 39.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20356 GetRequests, 14417 SyntacticMatches, 466 SemanticMatches, 5473 ConstructedPredicates, 6 IntricatePredicates, 1 DeprecatedPredicates, 253837 ImplicationChecksByTransitivity, 154.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=556occurred in iteration=48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 48 MinimizatonAttempts, 597 StatesRemovedByMinimization, 44 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 98.9s InterpolantComputationTime, 9013 NumberOfCodeBlocks, 9013 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 17930 ConstructedInterpolants, 3839 QuantifiedInterpolants, 45555859 SizeOfPredicates, 1784 NumberOfNonLiveVariables, 16907 ConjunctsInSsa, 2254 ConjunctsInUnsatCore, 96 InterpolantComputations, 14 PerfectInterpolantSequences, 51102/102574 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/count_down-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-11_20-11-22-508.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/count_down-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-11_20-11-22-508.csv Completed graceful shutdown