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 0.1.23-835382a-m [2018-04-05 15:23:37,686 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-05 15:23:37,688 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-05 15:23:37,727 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-04-05 15:23:37,826 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf [2018-04-05 15:23:37,920 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-05 15:23:37,933 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-05 15:23:37,933 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-05 15:23:37,933 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-05 15:23:37,934 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-05 15:23:37,934 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-05 15:23:37,935 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-05 15:23:37,935 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-05 15:23:37,935 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-05 15:23:37,941 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-05 15:23:37,941 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-05 15:23:37,942 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-05 15:23:37,946 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-05 15:23:37,946 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-05 15:23:37,946 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-05 15:23:37,947 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-05 15:23:37,947 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-05 15:23:37,947 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-05 15:23:37,947 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-05 15:23:37,947 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-05 15:23:37,948 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-05 15:23:37,948 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-05 15:23:37,948 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-05 15:23:37,948 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-05 15:23:37,948 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-05 15:23:37,949 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-05 15:23:37,949 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-05 15:23:37,949 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-05 15:23:37,949 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-05 15:23:37,949 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-05 15:23:37,950 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-05 15:23:37,959 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 15:23:37,959 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-05 15:23:37,960 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-05 15:23:37,960 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-05 15:23:37,961 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-05 15:23:37,961 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-05 15:23:38,086 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-05 15:23:38,138 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-05 15:23:38,160 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-05 15:23:38,162 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-05 15:23:38,163 INFO L276 PluginConnector]: CDTParser initialized [2018-04-05 15:23:38,164 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 [2018-04-05 15:23:38,955 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG0988e83c3 [2018-04-05 15:23:39,572 INFO L287 CDTParser]: IsIndexed: true [2018-04-05 15:23:39,573 INFO L288 CDTParser]: Found 1 translation units. [2018-04-05 15:23:39,573 INFO L168 CDTParser]: Scanning count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-05 15:23:39,620 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-05 15:23:39,620 INFO L215 ultiparseSymbolTable]: [2018-04-05 15:23:39,620 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-05 15:23:39,620 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 [2018-04-05 15:23:39,620 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 [2018-04-05 15:23:39,621 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-05 15:23:39,621 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-05 15:23:39,621 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 [2018-04-05 15:23:39,621 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 [2018-04-05 15:23:39,621 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 [2018-04-05 15:23:39,621 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 [2018-04-05 15:23:39,622 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 [2018-04-05 15:23:39,637 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 [2018-04-05 15:23:39,637 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 [2018-04-05 15:23:39,637 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 [2018-04-05 15:23:39,637 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 [2018-04-05 15:23:39,637 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 [2018-04-05 15:23:39,637 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 [2018-04-05 15:23:39,637 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 [2018-04-05 15:23:39,638 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 [2018-04-05 15:23:39,638 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 [2018-04-05 15:23:39,638 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 [2018-04-05 15:23:39,638 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 [2018-04-05 15:23:39,638 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 [2018-04-05 15:23:39,638 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 [2018-04-05 15:23:39,639 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 [2018-04-05 15:23:39,639 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 [2018-04-05 15:23:39,639 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 [2018-04-05 15:23:39,639 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 [2018-04-05 15:23:39,639 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 [2018-04-05 15:23:39,639 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 [2018-04-05 15:23:39,639 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 [2018-04-05 15:23:39,639 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 [2018-04-05 15:23:39,640 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 [2018-04-05 15:23:39,648 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 [2018-04-05 15:23:39,648 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 [2018-04-05 15:23:39,650 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 [2018-04-05 15:23:39,651 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 [2018-04-05 15:23:39,651 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 [2018-04-05 15:23:39,651 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 [2018-04-05 15:23:39,651 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 [2018-04-05 15:23:39,651 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 [2018-04-05 15:23:39,651 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 [2018-04-05 15:23:39,651 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 [2018-04-05 15:23:39,652 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 [2018-04-05 15:23:39,652 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 [2018-04-05 15:23:39,652 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 [2018-04-05 15:23:39,652 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 [2018-04-05 15:23:39,652 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 [2018-04-05 15:23:39,652 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 [2018-04-05 15:23:39,652 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 [2018-04-05 15:23:39,653 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 [2018-04-05 15:23:39,653 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 [2018-04-05 15:23:39,653 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 [2018-04-05 15:23:39,653 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 [2018-04-05 15:23:39,653 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 [2018-04-05 15:23:39,653 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 [2018-04-05 15:23:39,653 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 [2018-04-05 15:23:39,653 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 [2018-04-05 15:23:39,654 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 [2018-04-05 15:23:39,661 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 [2018-04-05 15:23:39,661 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 [2018-04-05 15:23:39,661 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 [2018-04-05 15:23:39,661 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 [2018-04-05 15:23:39,662 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 [2018-04-05 15:23:39,662 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 [2018-04-05 15:23:39,662 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 [2018-04-05 15:23:39,662 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 [2018-04-05 15:23:39,662 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 [2018-04-05 15:23:39,662 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 [2018-04-05 15:23:39,662 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 [2018-04-05 15:23:39,662 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 [2018-04-05 15:23:39,663 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 [2018-04-05 15:23:39,663 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 [2018-04-05 15:23:39,663 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 [2018-04-05 15:23:39,663 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 [2018-04-05 15:23:39,663 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 [2018-04-05 15:23:39,663 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 [2018-04-05 15:23:39,663 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 [2018-04-05 15:23:39,663 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 [2018-04-05 15:23:39,664 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 [2018-04-05 15:23:39,664 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 [2018-04-05 15:23:39,664 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 [2018-04-05 15:23:39,664 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 [2018-04-05 15:23:39,664 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 [2018-04-05 15:23:39,664 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 [2018-04-05 15:23:39,664 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 [2018-04-05 15:23:39,664 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 [2018-04-05 15:23:39,664 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 [2018-04-05 15:23:39,665 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 [2018-04-05 15:23:39,677 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 [2018-04-05 15:23:39,678 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 [2018-04-05 15:23:39,678 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 [2018-04-05 15:23:39,678 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 [2018-04-05 15:23:39,678 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 [2018-04-05 15:23:39,678 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 [2018-04-05 15:23:39,678 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 [2018-04-05 15:23:39,678 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 [2018-04-05 15:23:39,678 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 [2018-04-05 15:23:39,679 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 [2018-04-05 15:23:39,679 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 [2018-04-05 15:23:39,679 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 [2018-04-05 15:23:39,679 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 [2018-04-05 15:23:39,679 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 [2018-04-05 15:23:39,679 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 [2018-04-05 15:23:39,679 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 [2018-04-05 15:23:39,679 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 [2018-04-05 15:23:39,680 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 [2018-04-05 15:23:39,680 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 [2018-04-05 15:23:39,680 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 [2018-04-05 15:23:39,680 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 [2018-04-05 15:23:39,680 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 [2018-04-05 15:23:39,680 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 [2018-04-05 15:23:39,680 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 [2018-04-05 15:23:39,680 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 [2018-04-05 15:23:39,681 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 [2018-04-05 15:23:39,685 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 [2018-04-05 15:23:39,685 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 [2018-04-05 15:23:39,685 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 [2018-04-05 15:23:39,685 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 [2018-04-05 15:23:39,685 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 [2018-04-05 15:23:39,685 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 [2018-04-05 15:23:39,685 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 [2018-04-05 15:23:39,685 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 [2018-04-05 15:23:39,685 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 [2018-04-05 15:23:39,686 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 [2018-04-05 15:23:39,686 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 [2018-04-05 15:23:39,781 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG0988e83c3 [2018-04-05 15:23:39,801 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-05 15:23:39,805 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-05 15:23:39,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-05 15:23:39,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-05 15:23:39,837 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-05 15:23:39,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 03:23:39" (1/1) ... [2018-04-05 15:23:39,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17888989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:23:39, skipping insertion in model container [2018-04-05 15:23:39,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 03:23:39" (1/1) ... [2018-04-05 15:23:39,894 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-05 15:23:40,065 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-05 15:23:40,552 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-05 15:23:40,646 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-05 15:23:40,657 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 111 non ball SCCs. Number of states in SCCs 111. [2018-04-05 15:23:40,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:23:40 WrapperNode [2018-04-05 15:23:40,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-05 15:23:40,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-05 15:23:40,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-05 15:23:40,822 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-05 15:23:40,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:23:40" (1/1) ... [2018-04-05 15:23:40,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:23:40" (1/1) ... [2018-04-05 15:23:40,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:23:40" (1/1) ... [2018-04-05 15:23:40,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:23:40" (1/1) ... [2018-04-05 15:23:40,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:23:40" (1/1) ... [2018-04-05 15:23:40,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:23:40" (1/1) ... [2018-04-05 15:23:40,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:23:40" (1/1) ... [2018-04-05 15:23:41,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-05 15:23:41,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-05 15:23:41,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-05 15:23:41,018 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-05 15:23:41,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:23:40" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-05 15:23:41,376 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-05 15:23:41,377 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-05 15:23:41,377 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____bswap_32 [2018-04-05 15:23:41,377 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____bswap_64 [2018-04-05 15:23:41,377 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-05 15:23:41,377 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____bswap_32 [2018-04-05 15:23:41,378 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fcount_down_alloca_true_valid_memsafety_true_termination_i____bswap_64 [2018-04-05 15:23:41,378 INFO L128 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-04-05 15:23:41,378 INFO L128 BoogieDeclarations]: Found specification of procedure atof [2018-04-05 15:23:41,378 INFO L128 BoogieDeclarations]: Found specification of procedure atoi [2018-04-05 15:23:41,378 INFO L128 BoogieDeclarations]: Found specification of procedure atol [2018-04-05 15:23:41,378 INFO L128 BoogieDeclarations]: Found specification of procedure atoll [2018-04-05 15:23:41,378 INFO L128 BoogieDeclarations]: Found specification of procedure strtod [2018-04-05 15:23:41,378 INFO L128 BoogieDeclarations]: Found specification of procedure strtof [2018-04-05 15:23:41,379 INFO L128 BoogieDeclarations]: Found specification of procedure strtold [2018-04-05 15:23:41,389 INFO L128 BoogieDeclarations]: Found specification of procedure strtol [2018-04-05 15:23:41,389 INFO L128 BoogieDeclarations]: Found specification of procedure strtoul [2018-04-05 15:23:41,389 INFO L128 BoogieDeclarations]: Found specification of procedure strtoq [2018-04-05 15:23:41,389 INFO L128 BoogieDeclarations]: Found specification of procedure strtouq [2018-04-05 15:23:41,390 INFO L128 BoogieDeclarations]: Found specification of procedure strtoll [2018-04-05 15:23:41,390 INFO L128 BoogieDeclarations]: Found specification of procedure strtoull [2018-04-05 15:23:41,390 INFO L128 BoogieDeclarations]: Found specification of procedure l64a [2018-04-05 15:23:41,390 INFO L128 BoogieDeclarations]: Found specification of procedure a64l [2018-04-05 15:23:41,390 INFO L128 BoogieDeclarations]: Found specification of procedure select [2018-04-05 15:23:41,390 INFO L128 BoogieDeclarations]: Found specification of procedure pselect [2018-04-05 15:23:41,391 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-04-05 15:23:41,391 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-04-05 15:23:41,391 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-04-05 15:23:41,391 INFO L128 BoogieDeclarations]: Found specification of procedure random [2018-04-05 15:23:41,391 INFO L128 BoogieDeclarations]: Found specification of procedure srandom [2018-04-05 15:23:41,391 INFO L128 BoogieDeclarations]: Found specification of procedure initstate [2018-04-05 15:23:41,392 INFO L128 BoogieDeclarations]: Found specification of procedure setstate [2018-04-05 15:23:41,392 INFO L128 BoogieDeclarations]: Found specification of procedure random_r [2018-04-05 15:23:41,392 INFO L128 BoogieDeclarations]: Found specification of procedure srandom_r [2018-04-05 15:23:41,392 INFO L128 BoogieDeclarations]: Found specification of procedure initstate_r [2018-04-05 15:23:41,392 INFO L128 BoogieDeclarations]: Found specification of procedure setstate_r [2018-04-05 15:23:41,392 INFO L128 BoogieDeclarations]: Found specification of procedure rand [2018-04-05 15:23:41,392 INFO L128 BoogieDeclarations]: Found specification of procedure srand [2018-04-05 15:23:41,393 INFO L128 BoogieDeclarations]: Found specification of procedure rand_r [2018-04-05 15:23:41,397 INFO L128 BoogieDeclarations]: Found specification of procedure drand48 [2018-04-05 15:23:41,398 INFO L128 BoogieDeclarations]: Found specification of procedure erand48 [2018-04-05 15:23:41,398 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48 [2018-04-05 15:23:41,398 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48 [2018-04-05 15:23:41,398 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48 [2018-04-05 15:23:41,398 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48 [2018-04-05 15:23:41,398 INFO L128 BoogieDeclarations]: Found specification of procedure srand48 [2018-04-05 15:23:41,399 INFO L128 BoogieDeclarations]: Found specification of procedure seed48 [2018-04-05 15:23:41,399 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48 [2018-04-05 15:23:41,399 INFO L128 BoogieDeclarations]: Found specification of procedure drand48_r [2018-04-05 15:23:41,399 INFO L128 BoogieDeclarations]: Found specification of procedure erand48_r [2018-04-05 15:23:41,399 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-04-05 15:23:41,399 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-04-05 15:23:41,399 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-04-05 15:23:41,400 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-04-05 15:23:41,400 INFO L128 BoogieDeclarations]: Found specification of procedure srand48_r [2018-04-05 15:23:41,400 INFO L128 BoogieDeclarations]: Found specification of procedure seed48_r [2018-04-05 15:23:41,400 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-04-05 15:23:41,400 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-04-05 15:23:41,400 INFO L128 BoogieDeclarations]: Found specification of procedure calloc [2018-04-05 15:23:41,400 INFO L128 BoogieDeclarations]: Found specification of procedure realloc [2018-04-05 15:23:41,400 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-04-05 15:23:41,401 INFO L128 BoogieDeclarations]: Found specification of procedure cfree [2018-04-05 15:23:41,403 INFO L128 BoogieDeclarations]: Found specification of procedure alloca [2018-04-05 15:23:41,403 INFO L128 BoogieDeclarations]: Found specification of procedure valloc [2018-04-05 15:23:41,403 INFO L128 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-04-05 15:23:41,403 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-04-05 15:23:41,404 INFO L128 BoogieDeclarations]: Found specification of procedure atexit [2018-04-05 15:23:41,404 INFO L128 BoogieDeclarations]: Found specification of procedure on_exit [2018-04-05 15:23:41,404 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-04-05 15:23:41,404 INFO L128 BoogieDeclarations]: Found specification of procedure _Exit [2018-04-05 15:23:41,404 INFO L128 BoogieDeclarations]: Found specification of procedure getenv [2018-04-05 15:23:41,404 INFO L128 BoogieDeclarations]: Found specification of procedure putenv [2018-04-05 15:23:41,404 INFO L128 BoogieDeclarations]: Found specification of procedure setenv [2018-04-05 15:23:41,405 INFO L128 BoogieDeclarations]: Found specification of procedure unsetenv [2018-04-05 15:23:41,405 INFO L128 BoogieDeclarations]: Found specification of procedure clearenv [2018-04-05 15:23:41,405 INFO L128 BoogieDeclarations]: Found specification of procedure mktemp [2018-04-05 15:23:41,405 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemp [2018-04-05 15:23:41,405 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemps [2018-04-05 15:23:41,405 INFO L128 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-04-05 15:23:41,405 INFO L128 BoogieDeclarations]: Found specification of procedure system [2018-04-05 15:23:41,405 INFO L128 BoogieDeclarations]: Found specification of procedure realpath [2018-04-05 15:23:41,406 INFO L128 BoogieDeclarations]: Found specification of procedure bsearch [2018-04-05 15:23:41,406 INFO L128 BoogieDeclarations]: Found specification of procedure qsort [2018-04-05 15:23:41,406 INFO L128 BoogieDeclarations]: Found specification of procedure abs [2018-04-05 15:23:41,406 INFO L128 BoogieDeclarations]: Found specification of procedure labs [2018-04-05 15:23:41,406 INFO L128 BoogieDeclarations]: Found specification of procedure llabs [2018-04-05 15:23:41,406 INFO L128 BoogieDeclarations]: Found specification of procedure div [2018-04-05 15:23:41,407 INFO L128 BoogieDeclarations]: Found specification of procedure ldiv [2018-04-05 15:23:41,409 INFO L128 BoogieDeclarations]: Found specification of procedure lldiv [2018-04-05 15:23:41,409 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt [2018-04-05 15:23:41,409 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt [2018-04-05 15:23:41,410 INFO L128 BoogieDeclarations]: Found specification of procedure gcvt [2018-04-05 15:23:41,410 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt [2018-04-05 15:23:41,410 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt [2018-04-05 15:23:41,410 INFO L128 BoogieDeclarations]: Found specification of procedure qgcvt [2018-04-05 15:23:41,410 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-04-05 15:23:41,410 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-04-05 15:23:41,410 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-04-05 15:23:41,411 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-04-05 15:23:41,411 INFO L128 BoogieDeclarations]: Found specification of procedure mblen [2018-04-05 15:23:41,411 INFO L128 BoogieDeclarations]: Found specification of procedure mbtowc [2018-04-05 15:23:41,411 INFO L128 BoogieDeclarations]: Found specification of procedure wctomb [2018-04-05 15:23:41,411 INFO L128 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-04-05 15:23:41,411 INFO L128 BoogieDeclarations]: Found specification of procedure wcstombs [2018-04-05 15:23:41,411 INFO L128 BoogieDeclarations]: Found specification of procedure rpmatch [2018-04-05 15:23:41,412 INFO L128 BoogieDeclarations]: Found specification of procedure getsubopt [2018-04-05 15:23:41,412 INFO L128 BoogieDeclarations]: Found specification of procedure getloadavg [2018-04-05 15:23:41,412 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-04-05 15:23:41,412 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-05 15:23:41,412 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-05 15:23:41,412 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-05 15:23:41,412 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-05 15:23:41,412 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-05 15:23:41,413 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-05 15:23:41,414 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-05 15:23:41,414 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-05 15:23:42,426 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-05 15:23:42,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 03:23:42 BoogieIcfgContainer [2018-04-05 15:23:42,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-05 15:23:42,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-05 15:23:42,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-05 15:23:42,432 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-05 15:23:42,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 03:23:39" (1/3) ... [2018-04-05 15:23:42,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382d44a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 03:23:42, skipping insertion in model container [2018-04-05 15:23:42,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:23:40" (2/3) ... [2018-04-05 15:23:42,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382d44a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 03:23:42, skipping insertion in model container [2018-04-05 15:23:42,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 03:23:42" (3/3) ... [2018-04-05 15:23:42,454 INFO L107 eAbstractionObserver]: Analyzing ICFG count_down-alloca_true-valid-memsafety_true-termination.i [2018-04-05 15:23:42,473 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-05 15:23:42,486 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-04-05 15:23:42,611 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-05 15:23:42,612 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-05 15:23:42,612 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-05 15:23:42,612 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-05 15:23:42,612 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-05 15:23:42,613 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-05 15:23:42,613 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-05 15:23:42,613 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-05 15:23:42,613 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-05 15:23:42,618 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-05 15:23:42,647 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2018-04-05 15:23:42,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-04-05 15:23:42,656 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:23:42,658 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] [2018-04-05 15:23:42,658 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:23:42,671 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 [2018-04-05 15:23:42,718 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:23:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:23:42,844 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:23:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:23:42,976 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:23:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:23:43,116 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:23:43,116 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2018-04-05 15:23:43,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-05 15:23:43,139 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-05 15:23:43,144 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-05 15:23:43,147 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 4 states. [2018-04-05 15:23:43,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:23:43,363 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2018-04-05 15:23:43,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-05 15:23:43,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-04-05 15:23:43,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:23:43,403 INFO L225 Difference]: With dead ends: 94 [2018-04-05 15:23:43,403 INFO L226 Difference]: Without dead ends: 58 [2018-04-05 15:23:43,416 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 [2018-04-05 15:23:43,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-04-05 15:23:43,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-04-05 15:23:43,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-04-05 15:23:43,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2018-04-05 15:23:43,512 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 20 [2018-04-05 15:23:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:23:43,514 INFO L459 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2018-04-05 15:23:43,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-05 15:23:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2018-04-05 15:23:43,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-05 15:23:43,515 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:23:43,516 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 15:23:43,516 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:23:43,516 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 [2018-04-05 15:23:43,527 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:23:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:23:43,548 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:23:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:23:43,693 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:23:43,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:23:43,862 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:23:43,862 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-04-05 15:23:43,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-05 15:23:43,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-05 15:23:43,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-05 15:23:43,875 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 5 states. [2018-04-05 15:23:44,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:23:44,103 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2018-04-05 15:23:44,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-05 15:23:44,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-04-05 15:23:44,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:23:44,109 INFO L225 Difference]: With dead ends: 97 [2018-04-05 15:23:44,109 INFO L226 Difference]: Without dead ends: 70 [2018-04-05 15:23:44,113 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-04-05 15:23:44,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-04-05 15:23:44,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 60. [2018-04-05 15:23:44,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-04-05 15:23:44,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2018-04-05 15:23:44,138 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 24 [2018-04-05 15:23:44,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:23:44,138 INFO L459 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2018-04-05 15:23:44,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-05 15:23:44,139 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2018-04-05 15:23:44,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-05 15:23:44,146 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:23:44,146 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 15:23:44,146 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:23:44,147 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 [2018-04-05 15:23:44,166 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:23:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:23:44,188 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:23:44,230 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 15:23:44,233 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:23:44,259 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:23:44,259 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-05 15:23:44,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:23:44,327 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:23:44,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:23:44,432 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:23:44,433 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-04-05 15:23:44,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-05 15:23:44,434 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-05 15:23:44,434 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-05 15:23:44,434 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 4 states. [2018-04-05 15:23:44,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:23:44,654 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2018-04-05 15:23:44,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-05 15:23:44,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-04-05 15:23:44,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:23:44,656 INFO L225 Difference]: With dead ends: 60 [2018-04-05 15:23:44,656 INFO L226 Difference]: Without dead ends: 56 [2018-04-05 15:23:44,657 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-05 15:23:44,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-04-05 15:23:44,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-04-05 15:23:44,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-04-05 15:23:44,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2018-04-05 15:23:44,680 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 24 [2018-04-05 15:23:44,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:23:44,680 INFO L459 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2018-04-05 15:23:44,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-05 15:23:44,681 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2018-04-05 15:23:44,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-05 15:23:44,683 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:23:44,683 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 15:23:44,683 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:23:44,684 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 [2018-04-05 15:23:44,718 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:23:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:23:44,795 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:23:44,959 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-04-05 15:23:44,959 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:23:45,023 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-05 15:23:45,024 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2018-04-05 15:23:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:23:45,280 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:23:45,638 WARN L148 SmtUtils]: Spent 153ms on a formula simplification that was a NOOP. DAG size: 10 [2018-04-05 15:23:46,046 WARN L148 SmtUtils]: Spent 148ms on a formula simplification that was a NOOP. DAG size: 10 [2018-04-05 15:23:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:23:46,389 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:23:46,389 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-04-05 15:23:46,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-05 15:23:46,390 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-05 15:23:46,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-04-05 15:23:46,390 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 9 states. [2018-04-05 15:23:47,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:23:47,122 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2018-04-05 15:23:47,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-05 15:23:47,123 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-04-05 15:23:47,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:23:47,124 INFO L225 Difference]: With dead ends: 65 [2018-04-05 15:23:47,124 INFO L226 Difference]: Without dead ends: 64 [2018-04-05 15:23:47,125 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-04-05 15:23:47,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-04-05 15:23:47,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2018-04-05 15:23:47,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-04-05 15:23:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2018-04-05 15:23:47,146 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 24 [2018-04-05 15:23:47,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:23:47,147 INFO L459 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2018-04-05 15:23:47,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-05 15:23:47,147 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2018-04-05 15:23:47,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-04-05 15:23:47,148 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:23:47,149 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] [2018-04-05 15:23:47,159 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:23:47,159 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 [2018-04-05 15:23:47,185 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:23:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:23:47,246 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:23:47,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:23:47,612 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:23:47,777 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 [2018-04-05 15:23:47,778 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:23:47,834 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 [2018-04-05 15:23:47,835 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:23:47,857 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:23:47,858 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:35, output treesize:11 [2018-04-05 15:23:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:23:48,021 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:23:48,021 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-04-05 15:23:48,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-05 15:23:48,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-05 15:23:48,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-04-05 15:23:48,023 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand 9 states. [2018-04-05 15:23:48,448 WARN L151 SmtUtils]: Spent 137ms on a formula simplification. DAG size of input: 19 DAG size of output 14 [2018-04-05 15:23:48,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:23:49,076 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2018-04-05 15:23:49,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-05 15:23:49,077 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2018-04-05 15:23:49,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:23:49,078 INFO L225 Difference]: With dead ends: 86 [2018-04-05 15:23:49,078 INFO L226 Difference]: Without dead ends: 83 [2018-04-05 15:23:49,079 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2018-04-05 15:23:49,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-04-05 15:23:49,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2018-04-05 15:23:49,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-04-05 15:23:49,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2018-04-05 15:23:49,111 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 34 [2018-04-05 15:23:49,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:23:49,111 INFO L459 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2018-04-05 15:23:49,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-05 15:23:49,111 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2018-04-05 15:23:49,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-04-05 15:23:49,112 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:23:49,113 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] [2018-04-05 15:23:49,113 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:23:49,113 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 [2018-04-05 15:23:49,152 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:23:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:23:49,194 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:23:49,205 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-04-05 15:23:49,206 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:23:49,230 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 15:23:49,231 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-04-05 15:23:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:23:49,581 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:23:50,256 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:23:50,332 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:23:50,332 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-04-05 15:23:50,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-04-05 15:23:50,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-04-05 15:23:50,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-04-05 15:23:50,339 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand 14 states. [2018-04-05 15:23:51,221 WARN L151 SmtUtils]: Spent 200ms on a formula simplification. DAG size of input: 23 DAG size of output 22 [2018-04-05 15:23:51,584 WARN L151 SmtUtils]: Spent 128ms on a formula simplification. DAG size of input: 25 DAG size of output 24 [2018-04-05 15:23:52,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:23:52,114 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2018-04-05 15:23:52,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-04-05 15:23:52,115 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2018-04-05 15:23:52,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:23:52,121 INFO L225 Difference]: With dead ends: 67 [2018-04-05 15:23:52,121 INFO L226 Difference]: Without dead ends: 66 [2018-04-05 15:23:52,122 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2018-04-05 15:23:52,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-04-05 15:23:52,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2018-04-05 15:23:52,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-04-05 15:23:52,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2018-04-05 15:23:52,169 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 34 [2018-04-05 15:23:52,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:23:52,178 INFO L459 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2018-04-05 15:23:52,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-04-05 15:23:52,178 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2018-04-05 15:23:52,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-04-05 15:23:52,179 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:23:52,179 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] [2018-04-05 15:23:52,179 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:23:52,179 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 [2018-04-05 15:23:52,203 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:23:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:23:52,269 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:23:52,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-05 15:23:52,318 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:23:52,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-05 15:23:52,438 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:23:52,438 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-04-05 15:23:52,439 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-05 15:23:52,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-05 15:23:52,439 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-05 15:23:52,439 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 5 states. [2018-04-05 15:23:52,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:23:52,617 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2018-04-05 15:23:52,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-05 15:23:52,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2018-04-05 15:23:52,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:23:52,619 INFO L225 Difference]: With dead ends: 74 [2018-04-05 15:23:52,619 INFO L226 Difference]: Without dead ends: 69 [2018-04-05 15:23:52,620 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-04-05 15:23:52,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-04-05 15:23:52,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 57. [2018-04-05 15:23:52,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-04-05 15:23:52,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2018-04-05 15:23:52,660 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 36 [2018-04-05 15:23:52,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:23:52,661 INFO L459 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2018-04-05 15:23:52,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-05 15:23:52,661 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2018-04-05 15:23:52,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-04-05 15:23:52,668 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:23:52,668 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] [2018-04-05 15:23:52,668 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:23:52,668 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 [2018-04-05 15:23:52,702 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:23:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:23:52,757 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:23:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:23:53,010 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:23:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:23:53,300 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:23:53,300 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2018-04-05 15:23:53,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-05 15:23:53,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-05 15:23:53,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-04-05 15:23:53,307 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 12 states. [2018-04-05 15:23:54,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:23:54,604 INFO L93 Difference]: Finished difference Result 139 states and 150 transitions. [2018-04-05 15:23:54,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-04-05 15:23:54,604 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2018-04-05 15:23:54,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:23:54,606 INFO L225 Difference]: With dead ends: 139 [2018-04-05 15:23:54,606 INFO L226 Difference]: Without dead ends: 116 [2018-04-05 15:23:54,607 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2018-04-05 15:23:54,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-04-05 15:23:54,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2018-04-05 15:23:54,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-04-05 15:23:54,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2018-04-05 15:23:54,650 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 43 [2018-04-05 15:23:54,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:23:54,651 INFO L459 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2018-04-05 15:23:54,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-05 15:23:54,651 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2018-04-05 15:23:54,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-04-05 15:23:54,658 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:23:54,658 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] [2018-04-05 15:23:54,658 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:23:54,658 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 [2018-04-05 15:23:54,683 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:23:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:23:54,726 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:23:54,817 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 [2018-04-05 15:23:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-04-05 15:23:54,833 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:23:54,880 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 [2018-04-05 15:23:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-04-05 15:23:54,950 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:23:54,950 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2018-04-05 15:23:54,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-05 15:23:54,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-05 15:23:54,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=14, Unknown=2, NotChecked=14, Total=42 [2018-04-05 15:23:54,952 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 7 states. [2018-04-05 15:23:54,981 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 [2018-04-05 15:23:55,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:23:55,226 INFO L93 Difference]: Finished difference Result 126 states and 135 transitions. [2018-04-05 15:23:55,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-05 15:23:55,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2018-04-05 15:23:55,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:23:55,228 INFO L225 Difference]: With dead ends: 126 [2018-04-05 15:23:55,228 INFO L226 Difference]: Without dead ends: 103 [2018-04-05 15:23:55,229 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=28, Unknown=4, NotChecked=36, Total=90 [2018-04-05 15:23:55,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-04-05 15:23:55,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-04-05 15:23:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-04-05 15:23:55,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2018-04-05 15:23:55,269 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 45 [2018-04-05 15:23:55,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:23:55,269 INFO L459 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2018-04-05 15:23:55,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-05 15:23:55,269 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2018-04-05 15:23:55,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-04-05 15:23:55,276 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:23:55,276 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] [2018-04-05 15:23:55,276 INFO L408 AbstractCegarLoop]: === Iteration 10 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:23:55,276 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 [2018-04-05 15:23:55,305 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:23:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:23:55,393 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:23:55,478 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 [2018-04-05 15:23:55,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-04-05 15:23:55,486 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:23:55,536 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 [2018-04-05 15:23:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-04-05 15:23:55,657 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 15:23:55,657 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2018-04-05 15:23:55,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-05 15:23:55,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-05 15:23:55,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=14, Unknown=2, NotChecked=14, Total=42 [2018-04-05 15:23:55,659 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand 7 states. [2018-04-05 15:23:55,697 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 [2018-04-05 15:23:56,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:23:56,012 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2018-04-05 15:23:56,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-05 15:23:56,013 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2018-04-05 15:23:56,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:23:56,014 INFO L225 Difference]: With dead ends: 103 [2018-04-05 15:23:56,014 INFO L226 Difference]: Without dead ends: 62 [2018-04-05 15:23:56,014 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=28, Unknown=4, NotChecked=36, Total=90 [2018-04-05 15:23:56,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-04-05 15:23:56,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-04-05 15:23:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-04-05 15:23:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2018-04-05 15:23:56,045 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 46 [2018-04-05 15:23:56,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:23:56,045 INFO L459 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2018-04-05 15:23:56,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-05 15:23:56,045 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2018-04-05 15:23:56,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-04-05 15:23:56,047 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:23:56,047 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] [2018-04-05 15:23:56,047 INFO L408 AbstractCegarLoop]: === Iteration 11 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:23:56,048 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 [2018-04-05 15:23:56,079 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:23:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:23:56,139 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:23:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:23:56,874 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:23:57,411 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 [2018-04-05 15:23:57,412 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:23:57,455 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 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 [2018-04-05 15:23:57,456 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:23:57,478 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:23:57,479 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-05 15:23:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:23:57,982 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:23:57,982 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-04-05 15:23:57,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-04-05 15:23:57,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-04-05 15:23:57,983 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2018-04-05 15:23:57,983 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 20 states. [2018-04-05 15:23:59,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:23:59,721 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2018-04-05 15:23:59,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-04-05 15:23:59,721 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 53 [2018-04-05 15:23:59,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:23:59,722 INFO L225 Difference]: With dead ends: 98 [2018-04-05 15:23:59,722 INFO L226 Difference]: Without dead ends: 97 [2018-04-05 15:23:59,723 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=265, Invalid=727, Unknown=0, NotChecked=0, Total=992 [2018-04-05 15:23:59,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-04-05 15:23:59,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 77. [2018-04-05 15:23:59,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-04-05 15:23:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2018-04-05 15:23:59,765 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 53 [2018-04-05 15:23:59,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:23:59,766 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2018-04-05 15:23:59,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-04-05 15:23:59,772 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2018-04-05 15:23:59,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-04-05 15:23:59,773 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:23:59,773 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] [2018-04-05 15:23:59,774 INFO L408 AbstractCegarLoop]: === Iteration 12 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:23:59,774 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 [2018-04-05 15:23:59,797 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:23:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:23:59,850 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:24:00,464 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:24:00,465 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:24:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:24:01,063 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:24:01,063 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2018-04-05 15:24:01,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-04-05 15:24:01,064 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-04-05 15:24:01,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2018-04-05 15:24:01,064 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 18 states. [2018-04-05 15:24:02,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:24:02,671 INFO L93 Difference]: Finished difference Result 147 states and 158 transitions. [2018-04-05 15:24:02,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-05 15:24:02,672 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 62 [2018-04-05 15:24:02,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:24:02,673 INFO L225 Difference]: With dead ends: 147 [2018-04-05 15:24:02,673 INFO L226 Difference]: Without dead ends: 96 [2018-04-05 15:24:02,674 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 101 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=183, Invalid=687, Unknown=0, NotChecked=0, Total=870 [2018-04-05 15:24:02,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-04-05 15:24:02,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2018-04-05 15:24:02,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-04-05 15:24:02,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2018-04-05 15:24:02,748 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 62 [2018-04-05 15:24:02,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:24:02,749 INFO L459 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2018-04-05 15:24:02,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-04-05 15:24:02,749 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2018-04-05 15:24:02,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-04-05 15:24:02,758 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:24:02,758 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] [2018-04-05 15:24:02,758 INFO L408 AbstractCegarLoop]: === Iteration 13 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:24:02,758 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 [2018-04-05 15:24:02,787 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:24:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:24:02,885 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:24:03,749 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:24:03,750 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:24:04,244 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 [2018-04-05 15:24:04,245 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:24:04,279 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 [2018-04-05 15:24:04,280 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:24:04,308 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:24:04,309 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-05 15:24:05,171 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:24:05,254 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:24:05,254 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2018-04-05 15:24:05,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-04-05 15:24:05,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-04-05 15:24:05,255 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2018-04-05 15:24:05,256 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand 28 states. [2018-04-05 15:24:05,973 WARN L148 SmtUtils]: Spent 106ms on a formula simplification that was a NOOP. DAG size: 11 [2018-04-05 15:24:08,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:24:08,939 INFO L93 Difference]: Finished difference Result 124 states and 133 transitions. [2018-04-05 15:24:08,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-05 15:24:08,946 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 72 [2018-04-05 15:24:08,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:24:08,948 INFO L225 Difference]: With dead ends: 124 [2018-04-05 15:24:08,948 INFO L226 Difference]: Without dead ends: 123 [2018-04-05 15:24:08,956 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=472, Invalid=1598, Unknown=0, NotChecked=0, Total=2070 [2018-04-05 15:24:08,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-04-05 15:24:08,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 103. [2018-04-05 15:24:08,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-04-05 15:24:08,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2018-04-05 15:24:08,986 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 72 [2018-04-05 15:24:08,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:24:08,986 INFO L459 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2018-04-05 15:24:08,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-04-05 15:24:08,987 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2018-04-05 15:24:08,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-04-05 15:24:08,988 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:24:08,988 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] [2018-04-05 15:24:08,988 INFO L408 AbstractCegarLoop]: === Iteration 14 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:24:08,988 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 [2018-04-05 15:24:09,047 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:24:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:24:09,082 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:24:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 39 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:24:09,912 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:24:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 39 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:24:10,801 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:24:10,802 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 24 [2018-04-05 15:24:10,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-04-05 15:24:10,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-04-05 15:24:10,803 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2018-04-05 15:24:10,803 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand 24 states. [2018-04-05 15:24:13,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:24:13,447 INFO L93 Difference]: Finished difference Result 188 states and 202 transitions. [2018-04-05 15:24:13,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-04-05 15:24:13,448 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 81 [2018-04-05 15:24:13,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:24:13,449 INFO L225 Difference]: With dead ends: 188 [2018-04-05 15:24:13,449 INFO L226 Difference]: Without dead ends: 122 [2018-04-05 15:24:13,450 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 131 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=313, Invalid=1327, Unknown=0, NotChecked=0, Total=1640 [2018-04-05 15:24:13,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-04-05 15:24:13,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 114. [2018-04-05 15:24:13,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-04-05 15:24:13,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2018-04-05 15:24:13,500 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 81 [2018-04-05 15:24:13,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:24:13,500 INFO L459 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2018-04-05 15:24:13,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-04-05 15:24:13,500 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2018-04-05 15:24:13,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-04-05 15:24:13,502 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:24:13,506 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] [2018-04-05 15:24:13,506 INFO L408 AbstractCegarLoop]: === Iteration 15 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:24:13,506 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 [2018-04-05 15:24:13,529 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:24:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:24:13,599 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:24:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 51 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:24:14,944 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:24:16,035 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 [2018-04-05 15:24:16,078 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:24:16,121 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 [2018-04-05 15:24:16,122 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:24:16,144 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:24:16,145 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-05 15:24:18,213 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 51 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:24:18,255 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:24:18,256 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2018-04-05 15:24:18,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-04-05 15:24:18,257 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-04-05 15:24:18,257 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2018-04-05 15:24:18,257 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand 36 states. [2018-04-05 15:24:23,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:24:23,795 INFO L93 Difference]: Finished difference Result 150 states and 161 transitions. [2018-04-05 15:24:23,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-04-05 15:24:23,795 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 91 [2018-04-05 15:24:23,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:24:23,798 INFO L225 Difference]: With dead ends: 150 [2018-04-05 15:24:23,798 INFO L226 Difference]: Without dead ends: 149 [2018-04-05 15:24:23,800 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=727, Invalid=2813, Unknown=0, NotChecked=0, Total=3540 [2018-04-05 15:24:23,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-04-05 15:24:23,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 129. [2018-04-05 15:24:23,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-04-05 15:24:23,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 138 transitions. [2018-04-05 15:24:23,840 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 138 transitions. Word has length 91 [2018-04-05 15:24:23,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:24:23,840 INFO L459 AbstractCegarLoop]: Abstraction has 129 states and 138 transitions. [2018-04-05 15:24:23,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-04-05 15:24:23,840 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 138 transitions. [2018-04-05 15:24:23,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-04-05 15:24:23,842 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:24:23,842 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] [2018-04-05 15:24:23,842 INFO L408 AbstractCegarLoop]: === Iteration 16 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:24:23,842 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 [2018-04-05 15:24:23,878 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:24:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:24:23,932 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:24:25,249 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 70 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:24:25,249 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:24:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 70 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:24:26,571 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:24:26,571 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2018-04-05 15:24:26,572 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-04-05 15:24:26,572 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-04-05 15:24:26,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2018-04-05 15:24:26,573 INFO L87 Difference]: Start difference. First operand 129 states and 138 transitions. Second operand 30 states. [2018-04-05 15:24:31,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:24:31,073 INFO L93 Difference]: Finished difference Result 229 states and 246 transitions. [2018-04-05 15:24:31,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-04-05 15:24:31,074 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 100 [2018-04-05 15:24:31,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:24:31,075 INFO L225 Difference]: With dead ends: 229 [2018-04-05 15:24:31,075 INFO L226 Difference]: Without dead ends: 148 [2018-04-05 15:24:31,078 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 161 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=476, Invalid=2176, Unknown=0, NotChecked=0, Total=2652 [2018-04-05 15:24:31,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-04-05 15:24:31,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 140. [2018-04-05 15:24:31,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-04-05 15:24:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 150 transitions. [2018-04-05 15:24:31,117 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 150 transitions. Word has length 100 [2018-04-05 15:24:31,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:24:31,117 INFO L459 AbstractCegarLoop]: Abstraction has 140 states and 150 transitions. [2018-04-05 15:24:31,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-04-05 15:24:31,118 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 150 transitions. [2018-04-05 15:24:31,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-04-05 15:24:31,119 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:24:31,119 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] [2018-04-05 15:24:31,119 INFO L408 AbstractCegarLoop]: === Iteration 17 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:24:31,120 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 [2018-04-05 15:24:31,151 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:24:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:24:31,205 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:24:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 88 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:24:33,586 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:24:35,082 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 [2018-04-05 15:24:35,083 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:24:35,126 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2018-04-05 15:24:35,127 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:24:35,151 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:24:35,152 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-05 15:24:35,745 WARN L148 SmtUtils]: Spent 101ms on a formula simplification that was a NOOP. DAG size: 17 [2018-04-05 15:24:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 88 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:24:38,161 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:24:38,162 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2018-04-05 15:24:38,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-04-05 15:24:38,162 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-04-05 15:24:38,163 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1656, Unknown=0, NotChecked=0, Total=1892 [2018-04-05 15:24:38,163 INFO L87 Difference]: Start difference. First operand 140 states and 150 transitions. Second operand 44 states. [2018-04-05 15:24:42,547 WARN L148 SmtUtils]: Spent 144ms on a formula simplification that was a NOOP. DAG size: 17 [2018-04-05 15:24:43,203 WARN L148 SmtUtils]: Spent 244ms on a formula simplification that was a NOOP. DAG size: 20 [2018-04-05 15:24:45,741 WARN L148 SmtUtils]: Spent 132ms on a formula simplification that was a NOOP. DAG size: 22 [2018-04-05 15:24:47,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:24:47,676 INFO L93 Difference]: Finished difference Result 176 states and 189 transitions. [2018-04-05 15:24:47,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-04-05 15:24:47,676 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 110 [2018-04-05 15:24:47,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:24:47,677 INFO L225 Difference]: With dead ends: 176 [2018-04-05 15:24:47,677 INFO L226 Difference]: Without dead ends: 175 [2018-04-05 15:24:47,693 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=1030, Invalid=4372, Unknown=0, NotChecked=0, Total=5402 [2018-04-05 15:24:47,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-04-05 15:24:47,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 155. [2018-04-05 15:24:47,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-04-05 15:24:47,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2018-04-05 15:24:47,730 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 110 [2018-04-05 15:24:47,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:24:47,731 INFO L459 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2018-04-05 15:24:47,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-04-05 15:24:47,731 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2018-04-05 15:24:47,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-04-05 15:24:47,732 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:24:47,733 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] [2018-04-05 15:24:47,747 INFO L408 AbstractCegarLoop]: === Iteration 18 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:24:47,747 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 [2018-04-05 15:24:47,792 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:24:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:24:47,868 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:24:49,880 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 110 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:24:49,881 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:24:52,517 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 110 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:24:52,588 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:24:52,588 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 36 [2018-04-05 15:24:52,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-04-05 15:24:52,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-04-05 15:24:52,589 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1069, Unknown=0, NotChecked=0, Total=1260 [2018-04-05 15:24:52,589 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand 36 states. [2018-04-05 15:24:58,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:24:58,623 INFO L93 Difference]: Finished difference Result 270 states and 290 transitions. [2018-04-05 15:24:58,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-04-05 15:24:58,624 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 119 [2018-04-05 15:24:58,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:24:58,626 INFO L225 Difference]: With dead ends: 270 [2018-04-05 15:24:58,626 INFO L226 Difference]: Without dead ends: 174 [2018-04-05 15:24:58,628 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 191 SyntacticMatches, 12 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=672, Invalid=3234, Unknown=0, NotChecked=0, Total=3906 [2018-04-05 15:24:58,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-04-05 15:24:58,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 166. [2018-04-05 15:24:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-04-05 15:24:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 178 transitions. [2018-04-05 15:24:58,667 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 178 transitions. Word has length 119 [2018-04-05 15:24:58,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:24:58,668 INFO L459 AbstractCegarLoop]: Abstraction has 166 states and 178 transitions. [2018-04-05 15:24:58,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-04-05 15:24:58,668 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 178 transitions. [2018-04-05 15:24:58,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-04-05 15:24:58,669 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:24:58,669 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] [2018-04-05 15:24:58,669 INFO L408 AbstractCegarLoop]: === Iteration 19 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:24:58,669 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 [2018-04-05 15:24:58,701 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:24:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:24:58,755 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:25:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 135 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:25:02,193 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:25:04,038 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 [2018-04-05 15:25:04,039 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:25:04,100 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 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 [2018-04-05 15:25:04,101 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:25:04,126 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:25:04,126 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-05 15:25:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 135 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:25:07,639 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:25:07,639 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2018-04-05 15:25:07,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-04-05 15:25:07,640 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-04-05 15:25:07,641 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=2346, Unknown=0, NotChecked=0, Total=2652 [2018-04-05 15:25:07,642 INFO L87 Difference]: Start difference. First operand 166 states and 178 transitions. Second operand 52 states. [2018-04-05 15:25:20,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:25:20,264 INFO L93 Difference]: Finished difference Result 202 states and 217 transitions. [2018-04-05 15:25:20,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-04-05 15:25:20,265 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 129 [2018-04-05 15:25:20,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:25:20,276 INFO L225 Difference]: With dead ends: 202 [2018-04-05 15:25:20,276 INFO L226 Difference]: Without dead ends: 201 [2018-04-05 15:25:20,287 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=1381, Invalid=6275, Unknown=0, NotChecked=0, Total=7656 [2018-04-05 15:25:20,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-04-05 15:25:20,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 181. [2018-04-05 15:25:20,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-04-05 15:25:20,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 194 transitions. [2018-04-05 15:25:20,333 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 194 transitions. Word has length 129 [2018-04-05 15:25:20,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:25:20,333 INFO L459 AbstractCegarLoop]: Abstraction has 181 states and 194 transitions. [2018-04-05 15:25:20,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-04-05 15:25:20,333 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 194 transitions. [2018-04-05 15:25:20,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-04-05 15:25:20,335 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:25:20,335 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] [2018-04-05 15:25:20,335 INFO L408 AbstractCegarLoop]: === Iteration 20 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:25:20,335 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 [2018-04-05 15:25:20,361 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:25:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:25:20,454 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:25:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 159 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:25:22,501 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:25:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 159 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:25:24,776 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:25:24,776 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 42 [2018-04-05 15:25:24,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-04-05 15:25:24,777 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-04-05 15:25:24,778 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1471, Unknown=0, NotChecked=0, Total=1722 [2018-04-05 15:25:24,778 INFO L87 Difference]: Start difference. First operand 181 states and 194 transitions. Second operand 42 states. [2018-04-05 15:25:31,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:25:31,793 INFO L93 Difference]: Finished difference Result 311 states and 334 transitions. [2018-04-05 15:25:31,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-04-05 15:25:31,794 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 138 [2018-04-05 15:25:31,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:25:31,807 INFO L225 Difference]: With dead ends: 311 [2018-04-05 15:25:31,807 INFO L226 Difference]: Without dead ends: 200 [2018-04-05 15:25:31,809 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 221 SyntacticMatches, 14 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1370 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=901, Invalid=4501, Unknown=0, NotChecked=0, Total=5402 [2018-04-05 15:25:31,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-04-05 15:25:31,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 192. [2018-04-05 15:25:31,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-04-05 15:25:31,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 206 transitions. [2018-04-05 15:25:31,879 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 206 transitions. Word has length 138 [2018-04-05 15:25:31,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:25:31,880 INFO L459 AbstractCegarLoop]: Abstraction has 192 states and 206 transitions. [2018-04-05 15:25:31,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-04-05 15:25:31,880 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 206 transitions. [2018-04-05 15:25:31,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-04-05 15:25:31,881 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:25:31,881 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] [2018-04-05 15:25:31,881 INFO L408 AbstractCegarLoop]: === Iteration 21 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:25:31,882 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 [2018-04-05 15:25:31,911 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:25:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:25:31,988 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:25:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 192 proven. 191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:25:35,896 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:25:38,678 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 [2018-04-05 15:25:38,679 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:25:38,718 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 [2018-04-05 15:25:38,719 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:25:38,734 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:25:38,735 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-05 15:25:42,280 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 192 proven. 191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:25:42,316 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:25:42,316 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2018-04-05 15:25:42,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-04-05 15:25:42,317 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-04-05 15:25:42,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=3156, Unknown=0, NotChecked=0, Total=3540 [2018-04-05 15:25:42,318 INFO L87 Difference]: Start difference. First operand 192 states and 206 transitions. Second operand 60 states. [2018-04-05 15:25:54,379 WARN L148 SmtUtils]: Spent 113ms on a formula simplification that was a NOOP. DAG size: 24 [2018-04-05 15:25:58,747 WARN L148 SmtUtils]: Spent 112ms on a formula simplification that was a NOOP. DAG size: 23 [2018-04-05 15:26:00,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:26:00,029 INFO L93 Difference]: Finished difference Result 228 states and 245 transitions. [2018-04-05 15:26:00,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-05 15:26:00,029 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 148 [2018-04-05 15:26:00,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:26:00,031 INFO L225 Difference]: With dead ends: 228 [2018-04-05 15:26:00,031 INFO L226 Difference]: Without dead ends: 227 [2018-04-05 15:26:00,040 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2384 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=1780, Invalid=8522, Unknown=0, NotChecked=0, Total=10302 [2018-04-05 15:26:00,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-04-05 15:26:00,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 207. [2018-04-05 15:26:00,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-04-05 15:26:00,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 222 transitions. [2018-04-05 15:26:00,091 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 222 transitions. Word has length 148 [2018-04-05 15:26:00,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:26:00,091 INFO L459 AbstractCegarLoop]: Abstraction has 207 states and 222 transitions. [2018-04-05 15:26:00,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-04-05 15:26:00,091 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 222 transitions. [2018-04-05 15:26:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-04-05 15:26:00,092 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:26:00,093 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] [2018-04-05 15:26:00,093 INFO L408 AbstractCegarLoop]: === Iteration 22 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:26:00,093 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 [2018-04-05 15:26:00,116 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:26:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:26:00,187 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:26:03,114 WARN L148 SmtUtils]: Spent 127ms on a formula simplification that was a NOOP. DAG size: 7 [2018-04-05 15:26:04,020 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 217 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:26:04,020 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:26:07,780 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 217 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:26:07,842 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:26:07,842 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 48 [2018-04-05 15:26:07,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-04-05 15:26:07,843 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-04-05 15:26:07,843 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=1937, Unknown=0, NotChecked=0, Total=2256 [2018-04-05 15:26:07,843 INFO L87 Difference]: Start difference. First operand 207 states and 222 transitions. Second operand 48 states. [2018-04-05 15:26:15,157 WARN L148 SmtUtils]: Spent 160ms on a formula simplification that was a NOOP. DAG size: 12 [2018-04-05 15:26:17,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:26:17,135 INFO L93 Difference]: Finished difference Result 352 states and 378 transitions. [2018-04-05 15:26:17,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-04-05 15:26:17,138 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 157 [2018-04-05 15:26:17,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:26:17,140 INFO L225 Difference]: With dead ends: 352 [2018-04-05 15:26:17,140 INFO L226 Difference]: Without dead ends: 226 [2018-04-05 15:26:17,141 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 251 SyntacticMatches, 16 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1854 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=1163, Invalid=5977, Unknown=0, NotChecked=0, Total=7140 [2018-04-05 15:26:17,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-04-05 15:26:17,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 218. [2018-04-05 15:26:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-04-05 15:26:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 234 transitions. [2018-04-05 15:26:17,210 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 234 transitions. Word has length 157 [2018-04-05 15:26:17,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:26:17,218 INFO L459 AbstractCegarLoop]: Abstraction has 218 states and 234 transitions. [2018-04-05 15:26:17,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-04-05 15:26:17,218 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 234 transitions. [2018-04-05 15:26:17,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-04-05 15:26:17,223 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:26:17,223 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] [2018-04-05 15:26:17,223 INFO L408 AbstractCegarLoop]: === Iteration 23 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:26:17,223 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 [2018-04-05 15:26:17,257 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:26:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:26:17,361 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:26:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 259 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:26:22,190 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:26:25,545 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 [2018-04-05 15:26:25,546 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:26:25,604 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 [2018-04-05 15:26:25,605 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:26:25,630 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:26:25,630 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-05 15:26:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 259 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:26:30,640 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:26:30,641 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 67 [2018-04-05 15:26:30,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-04-05 15:26:30,642 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-04-05 15:26:30,642 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=4086, Unknown=0, NotChecked=0, Total=4556 [2018-04-05 15:26:30,642 INFO L87 Difference]: Start difference. First operand 218 states and 234 transitions. Second operand 68 states. [2018-04-05 15:26:40,383 WARN L148 SmtUtils]: Spent 110ms on a formula simplification that was a NOOP. DAG size: 24 [2018-04-05 15:26:42,269 WARN L148 SmtUtils]: Spent 120ms on a formula simplification that was a NOOP. DAG size: 24 [2018-04-05 15:26:48,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:26:48,172 INFO L93 Difference]: Finished difference Result 254 states and 273 transitions. [2018-04-05 15:26:48,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-04-05 15:26:48,172 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 167 [2018-04-05 15:26:48,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:26:48,174 INFO L225 Difference]: With dead ends: 254 [2018-04-05 15:26:48,175 INFO L226 Difference]: Without dead ends: 253 [2018-04-05 15:26:48,178 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3155 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=2227, Invalid=11113, Unknown=0, NotChecked=0, Total=13340 [2018-04-05 15:26:48,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-04-05 15:26:48,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 233. [2018-04-05 15:26:48,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-04-05 15:26:48,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 250 transitions. [2018-04-05 15:26:48,245 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 250 transitions. Word has length 167 [2018-04-05 15:26:48,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:26:48,248 INFO L459 AbstractCegarLoop]: Abstraction has 233 states and 250 transitions. [2018-04-05 15:26:48,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-04-05 15:26:48,248 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 250 transitions. [2018-04-05 15:26:48,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-04-05 15:26:48,250 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:26:48,250 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] [2018-04-05 15:26:48,250 INFO L408 AbstractCegarLoop]: === Iteration 24 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:26:48,250 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 [2018-04-05 15:26:48,304 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:26:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:26:48,396 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:26:51,975 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 284 proven. 296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:26:51,975 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:26:55,906 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 284 proven. 296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:26:55,958 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:26:55,958 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 54 [2018-04-05 15:26:55,959 INFO L442 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-04-05 15:26:55,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-04-05 15:26:55,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=2467, Unknown=0, NotChecked=0, Total=2862 [2018-04-05 15:26:55,960 INFO L87 Difference]: Start difference. First operand 233 states and 250 transitions. Second operand 54 states. [2018-04-05 15:27:06,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:27:06,848 INFO L93 Difference]: Finished difference Result 393 states and 422 transitions. [2018-04-05 15:27:06,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-04-05 15:27:06,848 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 176 [2018-04-05 15:27:06,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:27:06,850 INFO L225 Difference]: With dead ends: 393 [2018-04-05 15:27:06,850 INFO L226 Difference]: Without dead ends: 252 [2018-04-05 15:27:06,853 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 281 SyntacticMatches, 18 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2411 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=1458, Invalid=7662, Unknown=0, NotChecked=0, Total=9120 [2018-04-05 15:27:06,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-04-05 15:27:06,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 244. [2018-04-05 15:27:06,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-04-05 15:27:06,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 262 transitions. [2018-04-05 15:27:06,896 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 262 transitions. Word has length 176 [2018-04-05 15:27:06,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:27:06,896 INFO L459 AbstractCegarLoop]: Abstraction has 244 states and 262 transitions. [2018-04-05 15:27:06,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-04-05 15:27:06,896 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 262 transitions. [2018-04-05 15:27:06,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-04-05 15:27:06,898 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:27:06,898 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] [2018-04-05 15:27:06,898 INFO L408 AbstractCegarLoop]: === Iteration 25 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:27:06,898 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 [2018-04-05 15:27:06,945 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:27:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:27:07,049 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:27:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 336 proven. 326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:27:11,864 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:27:16,042 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 [2018-04-05 15:27:16,042 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:27:16,086 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 [2018-04-05 15:27:16,086 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:27:16,110 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:27:16,110 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-05 15:27:21,461 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 336 proven. 326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:27:21,530 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:27:21,530 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2018-04-05 15:27:21,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-04-05 15:27:21,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-04-05 15:27:21,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=564, Invalid=5136, Unknown=0, NotChecked=0, Total=5700 [2018-04-05 15:27:21,532 INFO L87 Difference]: Start difference. First operand 244 states and 262 transitions. Second operand 76 states. [2018-04-05 15:27:35,679 WARN L148 SmtUtils]: Spent 266ms on a formula simplification that was a NOOP. DAG size: 22 [2018-04-05 15:27:40,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:27:40,996 INFO L93 Difference]: Finished difference Result 280 states and 301 transitions. [2018-04-05 15:27:40,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-04-05 15:27:40,996 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 186 [2018-04-05 15:27:40,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:27:41,008 INFO L225 Difference]: With dead ends: 280 [2018-04-05 15:27:41,008 INFO L226 Difference]: Without dead ends: 279 [2018-04-05 15:27:41,009 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4034 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=2722, Invalid=14048, Unknown=0, NotChecked=0, Total=16770 [2018-04-05 15:27:41,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-04-05 15:27:41,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 259. [2018-04-05 15:27:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-04-05 15:27:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 278 transitions. [2018-04-05 15:27:41,105 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 278 transitions. Word has length 186 [2018-04-05 15:27:41,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:27:41,106 INFO L459 AbstractCegarLoop]: Abstraction has 259 states and 278 transitions. [2018-04-05 15:27:41,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-04-05 15:27:41,106 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 278 transitions. [2018-04-05 15:27:41,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-04-05 15:27:41,107 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:27:41,107 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] [2018-04-05 15:27:41,107 INFO L408 AbstractCegarLoop]: === Iteration 26 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:27:41,107 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 [2018-04-05 15:27:41,138 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:27:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:27:41,201 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:27:45,528 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 360 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:27:45,528 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:27:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 360 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:27:51,635 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:27:51,636 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 60 [2018-04-05 15:27:51,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-04-05 15:27:51,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-04-05 15:27:51,637 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=3061, Unknown=0, NotChecked=0, Total=3540 [2018-04-05 15:27:51,638 INFO L87 Difference]: Start difference. First operand 259 states and 278 transitions. Second operand 60 states. [2018-04-05 15:28:05,551 WARN L148 SmtUtils]: Spent 106ms on a formula simplification that was a NOOP. DAG size: 11 [2018-04-05 15:28:05,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:28:05,911 INFO L93 Difference]: Finished difference Result 434 states and 466 transitions. [2018-04-05 15:28:05,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-04-05 15:28:05,912 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 195 [2018-04-05 15:28:05,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:28:05,913 INFO L225 Difference]: With dead ends: 434 [2018-04-05 15:28:05,914 INFO L226 Difference]: Without dead ends: 278 [2018-04-05 15:28:05,915 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 311 SyntacticMatches, 20 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3041 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=1786, Invalid=9556, Unknown=0, NotChecked=0, Total=11342 [2018-04-05 15:28:05,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-04-05 15:28:05,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 270. [2018-04-05 15:28:05,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-04-05 15:28:05,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 290 transitions. [2018-04-05 15:28:05,982 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 290 transitions. Word has length 195 [2018-04-05 15:28:05,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:28:05,983 INFO L459 AbstractCegarLoop]: Abstraction has 270 states and 290 transitions. [2018-04-05 15:28:05,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-04-05 15:28:05,983 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 290 transitions. [2018-04-05 15:28:05,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-04-05 15:28:05,985 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:28:05,985 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] [2018-04-05 15:28:05,985 INFO L408 AbstractCegarLoop]: === Iteration 27 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:28:05,985 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 [2018-04-05 15:28:06,008 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:28:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:28:06,087 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:28:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 423 proven. 407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:28:12,477 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:28:16,544 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 [2018-04-05 15:28:16,545 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 15:28:16,579 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 [2018-04-05 15:28:16,580 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 15:28:16,597 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 15:28:16,597 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:11 [2018-04-05 15:28:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 423 proven. 407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:28:22,917 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:28:22,917 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 83 [2018-04-05 15:28:22,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-04-05 15:28:22,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-04-05 15:28:22,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=6306, Unknown=0, NotChecked=0, Total=6972 [2018-04-05 15:28:22,928 INFO L87 Difference]: Start difference. First operand 270 states and 290 transitions. Second operand 84 states. [2018-04-05 15:28:51,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:28:51,497 INFO L93 Difference]: Finished difference Result 306 states and 329 transitions. [2018-04-05 15:28:51,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-04-05 15:28:51,497 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 205 [2018-04-05 15:28:51,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:28:51,499 INFO L225 Difference]: With dead ends: 306 [2018-04-05 15:28:51,499 INFO L226 Difference]: Without dead ends: 305 [2018-04-05 15:28:51,500 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5021 ImplicationChecksByTransitivity, 32.2s TimeCoverageRelationStatistics Valid=3265, Invalid=17327, Unknown=0, NotChecked=0, Total=20592 [2018-04-05 15:28:51,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-04-05 15:28:51,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 285. [2018-04-05 15:28:51,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-04-05 15:28:51,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 306 transitions. [2018-04-05 15:28:51,596 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 306 transitions. Word has length 205 [2018-04-05 15:28:51,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:28:51,596 INFO L459 AbstractCegarLoop]: Abstraction has 285 states and 306 transitions. [2018-04-05 15:28:51,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-04-05 15:28:51,597 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 306 transitions. [2018-04-05 15:28:51,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-04-05 15:28:51,598 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:28:51,598 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] [2018-04-05 15:28:51,598 INFO L408 AbstractCegarLoop]: === Iteration 28 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:28:51,598 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 [2018-04-05 15:28:51,643 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:28:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:28:51,757 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 15:28:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 445 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:28:58,222 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 15:29:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 445 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 15:29:05,033 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 15:29:05,033 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 66 [2018-04-05 15:29:05,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-04-05 15:29:05,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-04-05 15:29:05,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=3719, Unknown=0, NotChecked=0, Total=4290 [2018-04-05 15:29:05,035 INFO L87 Difference]: Start difference. First operand 285 states and 306 transitions. Second operand 66 states. [2018-04-05 15:29:22,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 15:29:22,572 INFO L93 Difference]: Finished difference Result 475 states and 510 transitions. [2018-04-05 15:29:22,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-04-05 15:29:22,573 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 214 [2018-04-05 15:29:22,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 15:29:22,575 INFO L225 Difference]: With dead ends: 475 [2018-04-05 15:29:22,575 INFO L226 Difference]: Without dead ends: 304 [2018-04-05 15:29:22,577 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 341 SyntacticMatches, 22 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3744 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=2147, Invalid=11659, Unknown=0, NotChecked=0, Total=13806 [2018-04-05 15:29:22,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-04-05 15:29:22,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 296. [2018-04-05 15:29:22,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-04-05 15:29:22,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 318 transitions. [2018-04-05 15:29:22,665 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 318 transitions. Word has length 214 [2018-04-05 15:29:22,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 15:29:22,666 INFO L459 AbstractCegarLoop]: Abstraction has 296 states and 318 transitions. [2018-04-05 15:29:22,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-04-05 15:29:22,666 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 318 transitions. [2018-04-05 15:29:22,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-04-05 15:29:22,675 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 15:29:22,675 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] [2018-04-05 15:29:22,675 INFO L408 AbstractCegarLoop]: === Iteration 29 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr8EnsuresViolationMEMORY_LEAK, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation]=== [2018-04-05 15:29:22,676 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 [2018-04-05 15:29:22,732 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 15:29:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 15:29:22,827 INFO L270 TraceCheckSpWp]: Computing forward predicates...