java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrncat-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8168ed2-m [2018-04-11 20:13:22,056 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-11 20:13:22,058 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-11 20:13:22,071 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-11 20:13:22,071 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-11 20:13:22,072 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-11 20:13:22,073 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-11 20:13:22,074 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-11 20:13:22,076 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-11 20:13:22,077 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-11 20:13:22,078 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-11 20:13:22,079 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-11 20:13:22,079 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-11 20:13:22,081 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-11 20:13:22,082 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-11 20:13:22,084 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-11 20:13:22,086 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-11 20:13:22,088 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-11 20:13:22,089 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-11 20:13:22,090 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-11 20:13:22,093 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-11 20:13:22,093 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-11 20:13:22,093 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-11 20:13:22,094 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-11 20:13:22,095 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-11 20:13:22,096 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-11 20:13:22,097 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-11 20:13:22,097 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-11 20:13:22,098 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-11 20:13:22,098 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-11 20:13:22,099 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-11 20:13:22,099 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf [2018-04-11 20:13:22,123 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-11 20:13:22,124 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-11 20:13:22,124 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-11 20:13:22,124 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-11 20:13:22,124 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-11 20:13:22,125 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-11 20:13:22,125 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-11 20:13:22,125 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-11 20:13:22,125 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-04-11 20:13:22,125 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-11 20:13:22,126 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-11 20:13:22,126 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-11 20:13:22,126 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-11 20:13:22,126 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-11 20:13:22,126 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-11 20:13:22,126 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-11 20:13:22,127 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-11 20:13:22,127 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-11 20:13:22,127 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-11 20:13:22,127 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-11 20:13:22,127 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-11 20:13:22,127 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-11 20:13:22,128 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-11 20:13:22,128 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-11 20:13:22,128 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-11 20:13:22,128 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-11 20:13:22,129 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-11 20:13:22,129 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-11 20:13:22,129 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-11 20:13:22,129 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-11 20:13:22,129 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-11 20:13:22,129 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-11 20:13:22,129 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:13:22,130 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-11 20:13:22,130 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-11 20:13:22,130 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-11 20:13:22,131 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-11 20:13:22,131 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-11 20:13:22,164 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-11 20:13:22,174 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-11 20:13:22,177 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-11 20:13:22,178 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-11 20:13:22,179 INFO L276 PluginConnector]: CDTParser initialized [2018-04-11 20:13:22,180 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,461 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGa6561199a [2018-04-11 20:13:22,650 INFO L287 CDTParser]: IsIndexed: true [2018-04-11 20:13:22,650 INFO L288 CDTParser]: Found 1 translation units. [2018-04-11 20:13:22,650 INFO L168 CDTParser]: Scanning cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,661 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-11 20:13:22,662 INFO L215 ultiparseSymbolTable]: [2018-04-11 20:13:22,662 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-11 20:13:22,662 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____bswap_64 ('__bswap_64') in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,662 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,662 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____bswap_32 ('__bswap_32') in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,662 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__ ('') in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,662 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-11 20:13:22,663 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__u_quad_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,663 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____u_char in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,663 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____off64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,663 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__u_int32_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,663 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_key_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,663 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____id_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,663 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__sigset_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,663 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____syscall_ulong_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,663 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____rlim64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,663 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____blksize_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,663 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____uint32_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,664 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__blksize_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,664 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____u_long in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,664 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____qaddr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,664 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__fsblkcnt_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,664 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____int32_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,664 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__ulong in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,664 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__daddr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,664 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__clock_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,664 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____dev_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,664 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__key_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,664 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_rwlockattr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,664 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__mode_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,664 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__u_long in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,665 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____u_short in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,665 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____off_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,665 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____caddr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,665 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__fd_set in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,665 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__size_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,665 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_barrier_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,665 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____intptr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,665 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____u_quad_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,665 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____pid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,665 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____ino_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,665 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_mutexattr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,665 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____quad_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,665 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____fsid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,665 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__u_int in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,666 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_cond_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,666 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__caddr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,666 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____sigset_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,666 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____gid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,666 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_spinlock_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,666 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____mode_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,666 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____timer_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,666 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__off_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,666 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____int16_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,666 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__div_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,666 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__u_char in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,667 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____clockid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,667 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__u_int16_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,667 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__quad_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,667 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____suseconds_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,667 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__blkcnt_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,667 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__lldiv_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,667 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____pthread_list_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,667 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____socklen_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,668 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__uid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,668 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__int16_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,668 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__wchar_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,668 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____rlim_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,668 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____uid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,668 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_attr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,668 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____sig_atomic_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,668 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__ssize_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,668 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____fsblkcnt64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,669 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____fd_mask in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,669 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,669 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__id_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,669 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_condattr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,669 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_once_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,669 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__u_short in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,669 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__gid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,669 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____nlink_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,669 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____clock_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,670 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__u_int8_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,670 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__clockid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,670 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__uint in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,670 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____int8_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,670 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__int32_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,670 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__nlink_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,670 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,670 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__fsfilcnt_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,670 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__timer_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,671 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____ssize_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,671 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____uint64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,671 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____fsword_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,671 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____blkcnt64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,671 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__suseconds_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,671 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__fd_mask in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,671 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____syscall_slong_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,671 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__ushort in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,671 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____ino64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,671 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____loff_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,671 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____time_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,672 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__int8_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,672 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____uint16_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,672 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____blkcnt_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,672 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__fsid_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,672 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____fsfilcnt_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,672 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____daddr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,672 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____WAIT_STATUS in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,672 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__int64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,672 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____uint8_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,672 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____key_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,672 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__dev_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,672 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__ldiv_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,673 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__u_int64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,673 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__loff_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,673 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_rwlock_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,673 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____u_int in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,673 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__time_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,673 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__ino_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,673 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_barrierattr_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,673 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____fsblkcnt_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,673 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____int64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,674 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____useconds_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,674 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__register_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,674 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i__pthread_mutex_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,674 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____fsfilcnt64_t in cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:22,694 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGa6561199a [2018-04-11 20:13:22,699 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-11 20:13:22,701 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-11 20:13:22,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-11 20:13:22,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-11 20:13:22,709 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-11 20:13:22,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 08:13:22" (1/1) ... [2018-04-11 20:13:22,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337095de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:13:22, skipping insertion in model container [2018-04-11 20:13:22,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 08:13:22" (1/1) ... [2018-04-11 20:13:22,725 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 20:13:22,754 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 20:13:22,931 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 20:13:22,977 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 20:13:22,984 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 112 non ball SCCs. Number of states in SCCs 112. [2018-04-11 20:13:23,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:13:23 WrapperNode [2018-04-11 20:13:23,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-11 20:13:23,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-11 20:13:23,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-11 20:13:23,031 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-11 20:13:23,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:13:23" (1/1) ... [2018-04-11 20:13:23,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:13:23" (1/1) ... [2018-04-11 20:13:23,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:13:23" (1/1) ... [2018-04-11 20:13:23,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:13:23" (1/1) ... [2018-04-11 20:13:23,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:13:23" (1/1) ... [2018-04-11 20:13:23,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:13:23" (1/1) ... [2018-04-11 20:13:23,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:13:23" (1/1) ... [2018-04-11 20:13:23,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-11 20:13:23,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-11 20:13:23,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-11 20:13:23,092 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-11 20:13:23,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:13:23" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-11 20:13:23,218 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-11 20:13:23,218 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-11 20:13:23,218 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____bswap_32 [2018-04-11 20:13:23,218 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____bswap_64 [2018-04-11 20:13:23,219 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncat [2018-04-11 20:13:23,219 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-11 20:13:23,219 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____bswap_32 [2018-04-11 20:13:23,219 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fcstrncat_alloca_true_valid_memsafety_true_termination_i____bswap_64 [2018-04-11 20:13:23,219 INFO L128 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-04-11 20:13:23,219 INFO L128 BoogieDeclarations]: Found specification of procedure atof [2018-04-11 20:13:23,219 INFO L128 BoogieDeclarations]: Found specification of procedure atoi [2018-04-11 20:13:23,220 INFO L128 BoogieDeclarations]: Found specification of procedure atol [2018-04-11 20:13:23,220 INFO L128 BoogieDeclarations]: Found specification of procedure atoll [2018-04-11 20:13:23,220 INFO L128 BoogieDeclarations]: Found specification of procedure strtod [2018-04-11 20:13:23,220 INFO L128 BoogieDeclarations]: Found specification of procedure strtof [2018-04-11 20:13:23,220 INFO L128 BoogieDeclarations]: Found specification of procedure strtold [2018-04-11 20:13:23,220 INFO L128 BoogieDeclarations]: Found specification of procedure strtol [2018-04-11 20:13:23,221 INFO L128 BoogieDeclarations]: Found specification of procedure strtoul [2018-04-11 20:13:23,221 INFO L128 BoogieDeclarations]: Found specification of procedure strtoq [2018-04-11 20:13:23,221 INFO L128 BoogieDeclarations]: Found specification of procedure strtouq [2018-04-11 20:13:23,221 INFO L128 BoogieDeclarations]: Found specification of procedure strtoll [2018-04-11 20:13:23,221 INFO L128 BoogieDeclarations]: Found specification of procedure strtoull [2018-04-11 20:13:23,222 INFO L128 BoogieDeclarations]: Found specification of procedure l64a [2018-04-11 20:13:23,222 INFO L128 BoogieDeclarations]: Found specification of procedure a64l [2018-04-11 20:13:23,222 INFO L128 BoogieDeclarations]: Found specification of procedure select [2018-04-11 20:13:23,222 INFO L128 BoogieDeclarations]: Found specification of procedure pselect [2018-04-11 20:13:23,222 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-04-11 20:13:23,222 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-04-11 20:13:23,223 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-04-11 20:13:23,223 INFO L128 BoogieDeclarations]: Found specification of procedure random [2018-04-11 20:13:23,223 INFO L128 BoogieDeclarations]: Found specification of procedure srandom [2018-04-11 20:13:23,223 INFO L128 BoogieDeclarations]: Found specification of procedure initstate [2018-04-11 20:13:23,223 INFO L128 BoogieDeclarations]: Found specification of procedure setstate [2018-04-11 20:13:23,223 INFO L128 BoogieDeclarations]: Found specification of procedure random_r [2018-04-11 20:13:23,223 INFO L128 BoogieDeclarations]: Found specification of procedure srandom_r [2018-04-11 20:13:23,224 INFO L128 BoogieDeclarations]: Found specification of procedure initstate_r [2018-04-11 20:13:23,224 INFO L128 BoogieDeclarations]: Found specification of procedure setstate_r [2018-04-11 20:13:23,224 INFO L128 BoogieDeclarations]: Found specification of procedure rand [2018-04-11 20:13:23,224 INFO L128 BoogieDeclarations]: Found specification of procedure srand [2018-04-11 20:13:23,224 INFO L128 BoogieDeclarations]: Found specification of procedure rand_r [2018-04-11 20:13:23,224 INFO L128 BoogieDeclarations]: Found specification of procedure drand48 [2018-04-11 20:13:23,224 INFO L128 BoogieDeclarations]: Found specification of procedure erand48 [2018-04-11 20:13:23,225 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48 [2018-04-11 20:13:23,225 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48 [2018-04-11 20:13:23,225 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48 [2018-04-11 20:13:23,225 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48 [2018-04-11 20:13:23,225 INFO L128 BoogieDeclarations]: Found specification of procedure srand48 [2018-04-11 20:13:23,225 INFO L128 BoogieDeclarations]: Found specification of procedure seed48 [2018-04-11 20:13:23,225 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48 [2018-04-11 20:13:23,226 INFO L128 BoogieDeclarations]: Found specification of procedure drand48_r [2018-04-11 20:13:23,226 INFO L128 BoogieDeclarations]: Found specification of procedure erand48_r [2018-04-11 20:13:23,226 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-04-11 20:13:23,226 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-04-11 20:13:23,226 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-04-11 20:13:23,226 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-04-11 20:13:23,226 INFO L128 BoogieDeclarations]: Found specification of procedure srand48_r [2018-04-11 20:13:23,226 INFO L128 BoogieDeclarations]: Found specification of procedure seed48_r [2018-04-11 20:13:23,227 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-04-11 20:13:23,227 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-04-11 20:13:23,227 INFO L128 BoogieDeclarations]: Found specification of procedure calloc [2018-04-11 20:13:23,227 INFO L128 BoogieDeclarations]: Found specification of procedure realloc [2018-04-11 20:13:23,227 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-04-11 20:13:23,227 INFO L128 BoogieDeclarations]: Found specification of procedure cfree [2018-04-11 20:13:23,227 INFO L128 BoogieDeclarations]: Found specification of procedure alloca [2018-04-11 20:13:23,227 INFO L128 BoogieDeclarations]: Found specification of procedure valloc [2018-04-11 20:13:23,228 INFO L128 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-04-11 20:13:23,228 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-04-11 20:13:23,228 INFO L128 BoogieDeclarations]: Found specification of procedure atexit [2018-04-11 20:13:23,228 INFO L128 BoogieDeclarations]: Found specification of procedure on_exit [2018-04-11 20:13:23,228 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-04-11 20:13:23,228 INFO L128 BoogieDeclarations]: Found specification of procedure _Exit [2018-04-11 20:13:23,228 INFO L128 BoogieDeclarations]: Found specification of procedure getenv [2018-04-11 20:13:23,229 INFO L128 BoogieDeclarations]: Found specification of procedure putenv [2018-04-11 20:13:23,229 INFO L128 BoogieDeclarations]: Found specification of procedure setenv [2018-04-11 20:13:23,229 INFO L128 BoogieDeclarations]: Found specification of procedure unsetenv [2018-04-11 20:13:23,229 INFO L128 BoogieDeclarations]: Found specification of procedure clearenv [2018-04-11 20:13:23,229 INFO L128 BoogieDeclarations]: Found specification of procedure mktemp [2018-04-11 20:13:23,229 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemp [2018-04-11 20:13:23,229 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemps [2018-04-11 20:13:23,229 INFO L128 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-04-11 20:13:23,230 INFO L128 BoogieDeclarations]: Found specification of procedure system [2018-04-11 20:13:23,230 INFO L128 BoogieDeclarations]: Found specification of procedure realpath [2018-04-11 20:13:23,230 INFO L128 BoogieDeclarations]: Found specification of procedure bsearch [2018-04-11 20:13:23,230 INFO L128 BoogieDeclarations]: Found specification of procedure qsort [2018-04-11 20:13:23,230 INFO L128 BoogieDeclarations]: Found specification of procedure abs [2018-04-11 20:13:23,230 INFO L128 BoogieDeclarations]: Found specification of procedure labs [2018-04-11 20:13:23,230 INFO L128 BoogieDeclarations]: Found specification of procedure llabs [2018-04-11 20:13:23,231 INFO L128 BoogieDeclarations]: Found specification of procedure div [2018-04-11 20:13:23,231 INFO L128 BoogieDeclarations]: Found specification of procedure ldiv [2018-04-11 20:13:23,231 INFO L128 BoogieDeclarations]: Found specification of procedure lldiv [2018-04-11 20:13:23,231 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt [2018-04-11 20:13:23,231 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt [2018-04-11 20:13:23,231 INFO L128 BoogieDeclarations]: Found specification of procedure gcvt [2018-04-11 20:13:23,231 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt [2018-04-11 20:13:23,231 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt [2018-04-11 20:13:23,232 INFO L128 BoogieDeclarations]: Found specification of procedure qgcvt [2018-04-11 20:13:23,232 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-04-11 20:13:23,232 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-04-11 20:13:23,232 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-04-11 20:13:23,232 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-04-11 20:13:23,232 INFO L128 BoogieDeclarations]: Found specification of procedure mblen [2018-04-11 20:13:23,232 INFO L128 BoogieDeclarations]: Found specification of procedure mbtowc [2018-04-11 20:13:23,232 INFO L128 BoogieDeclarations]: Found specification of procedure wctomb [2018-04-11 20:13:23,233 INFO L128 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-04-11 20:13:23,233 INFO L128 BoogieDeclarations]: Found specification of procedure wcstombs [2018-04-11 20:13:23,233 INFO L128 BoogieDeclarations]: Found specification of procedure rpmatch [2018-04-11 20:13:23,233 INFO L128 BoogieDeclarations]: Found specification of procedure getsubopt [2018-04-11 20:13:23,233 INFO L128 BoogieDeclarations]: Found specification of procedure getloadavg [2018-04-11 20:13:23,233 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-04-11 20:13:23,233 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncat [2018-04-11 20:13:23,233 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-11 20:13:23,234 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-11 20:13:23,234 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-11 20:13:23,234 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-11 20:13:23,234 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-11 20:13:23,234 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-11 20:13:23,234 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-11 20:13:23,234 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-11 20:13:23,637 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-11 20:13:23,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 08:13:23 BoogieIcfgContainer [2018-04-11 20:13:23,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-11 20:13:23,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-11 20:13:23,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-11 20:13:23,642 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-11 20:13:23,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.04 08:13:22" (1/3) ... [2018-04-11 20:13:23,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a141e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 08:13:23, skipping insertion in model container [2018-04-11 20:13:23,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 08:13:23" (2/3) ... [2018-04-11 20:13:23,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a141e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 08:13:23, skipping insertion in model container [2018-04-11 20:13:23,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 08:13:23" (3/3) ... [2018-04-11 20:13:23,646 INFO L107 eAbstractionObserver]: Analyzing ICFG cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-04-11 20:13:23,655 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-11 20:13:23,663 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-04-11 20:13:23,707 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-11 20:13:23,708 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-11 20:13:23,708 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-11 20:13:23,708 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-11 20:13:23,708 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-11 20:13:23,708 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-11 20:13:23,708 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-11 20:13:23,709 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-11 20:13:23,709 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-11 20:13:23,709 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-11 20:13:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2018-04-11 20:13:23,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-04-11 20:13:23,730 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:13:23,730 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:13:23,730 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:13:23,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1326053013, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:13:23,746 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:13:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:13:23,783 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:13:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:23,813 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:13:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:23,854 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:13:23,854 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-04-11 20:13:23,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-11 20:13:23,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-11 20:13:23,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-11 20:13:23,867 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 3 states. [2018-04-11 20:13:23,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:13:23,958 INFO L93 Difference]: Finished difference Result 145 states and 158 transitions. [2018-04-11 20:13:23,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-11 20:13:23,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-04-11 20:13:23,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:13:23,971 INFO L225 Difference]: With dead ends: 145 [2018-04-11 20:13:23,972 INFO L226 Difference]: Without dead ends: 92 [2018-04-11 20:13:23,975 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-11 20:13:23,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-04-11 20:13:24,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-04-11 20:13:24,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-04-11 20:13:24,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2018-04-11 20:13:24,018 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 21 [2018-04-11 20:13:24,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:13:24,018 INFO L459 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2018-04-11 20:13:24,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-11 20:13:24,019 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2018-04-11 20:13:24,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-11 20:13:24,020 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:13:24,020 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:13:24,020 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:13:24,020 INFO L82 PathProgramCache]: Analyzing trace with hash 722601381, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:13:24,027 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:13:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:13:24,047 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:13:24,086 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:13:24,088 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:24,090 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:13:24,090 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-11 20:13:24,113 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-04-11 20:13:24,114 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:24,124 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-11 20:13:24,124 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2018-04-11 20:13:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:24,139 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:13:24,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:24,179 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:13:24,179 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-04-11 20:13:24,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-11 20:13:24,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-11 20:13:24,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-11 20:13:24,181 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand 4 states. [2018-04-11 20:13:24,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:13:24,275 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2018-04-11 20:13:24,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-11 20:13:24,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-04-11 20:13:24,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:13:24,277 INFO L225 Difference]: With dead ends: 92 [2018-04-11 20:13:24,277 INFO L226 Difference]: Without dead ends: 91 [2018-04-11 20:13:24,278 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-11 20:13:24,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-04-11 20:13:24,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-04-11 20:13:24,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-04-11 20:13:24,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2018-04-11 20:13:24,288 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 24 [2018-04-11 20:13:24,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:13:24,289 INFO L459 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2018-04-11 20:13:24,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-11 20:13:24,289 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2018-04-11 20:13:24,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-11 20:13:24,290 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:13:24,290 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:13:24,290 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:13:24,291 INFO L82 PathProgramCache]: Analyzing trace with hash 722601382, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:13:24,297 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:13:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:13:24,319 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:13:24,371 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:13:24,372 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:24,400 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:13:24,401 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:24,410 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:13:24,410 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:25 [2018-04-11 20:13:24,509 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:13:24,510 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:13:24,511 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 21 [2018-04-11 20:13:24,512 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:24,621 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:13:24,622 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:13:24,623 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-11 20:13:24,623 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:24,647 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-11 20:13:24,647 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:36, output treesize:24 [2018-04-11 20:13:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:24,669 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:13:24,758 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2018-04-11 20:13:24,758 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:24,767 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 20 [2018-04-11 20:13:24,789 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2018-04-11 20:13:24,789 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:24,793 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:13:24,809 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:13:24,810 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:29, output treesize:9 [2018-04-11 20:13:24,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:24,864 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:13:24,865 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2018-04-11 20:13:24,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-04-11 20:13:24,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-04-11 20:13:24,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-04-11 20:13:24,866 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand 13 states. [2018-04-11 20:13:25,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:13:25,059 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2018-04-11 20:13:25,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-11 20:13:25,059 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-04-11 20:13:25,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:13:25,061 INFO L225 Difference]: With dead ends: 91 [2018-04-11 20:13:25,061 INFO L226 Difference]: Without dead ends: 90 [2018-04-11 20:13:25,062 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-04-11 20:13:25,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-04-11 20:13:25,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-04-11 20:13:25,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-04-11 20:13:25,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2018-04-11 20:13:25,070 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 24 [2018-04-11 20:13:25,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:13:25,071 INFO L459 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2018-04-11 20:13:25,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-04-11 20:13:25,071 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2018-04-11 20:13:25,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-04-11 20:13:25,072 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:13:25,072 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:13:25,072 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:13:25,073 INFO L82 PathProgramCache]: Analyzing trace with hash 925806431, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:13:25,079 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:13:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:13:25,091 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:13:25,099 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:13:25,100 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:25,110 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:13:25,111 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-11 20:13:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:25,120 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:13:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:25,144 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:13:25,145 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-04-11 20:13:25,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-11 20:13:25,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-11 20:13:25,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-11 20:13:25,146 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand 4 states. [2018-04-11 20:13:25,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:13:25,185 INFO L93 Difference]: Finished difference Result 90 states and 96 transitions. [2018-04-11 20:13:25,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-11 20:13:25,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-04-11 20:13:25,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:13:25,186 INFO L225 Difference]: With dead ends: 90 [2018-04-11 20:13:25,186 INFO L226 Difference]: Without dead ends: 89 [2018-04-11 20:13:25,187 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-11 20:13:25,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-04-11 20:13:25,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-04-11 20:13:25,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-04-11 20:13:25,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2018-04-11 20:13:25,192 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 25 [2018-04-11 20:13:25,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:13:25,192 INFO L459 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2018-04-11 20:13:25,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-11 20:13:25,193 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2018-04-11 20:13:25,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-04-11 20:13:25,193 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:13:25,193 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:13:25,193 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:13:25,193 INFO L82 PathProgramCache]: Analyzing trace with hash 925806432, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:13:25,199 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:13:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:13:25,211 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:13:25,216 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:13:25,216 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:25,220 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:13:25,220 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-04-11 20:13:25,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:25,232 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:13:25,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:25,269 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:13:25,269 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2018-04-11 20:13:25,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-11 20:13:25,269 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-11 20:13:25,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-04-11 20:13:25,269 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand 7 states. [2018-04-11 20:13:25,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:13:25,340 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2018-04-11 20:13:25,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-11 20:13:25,340 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-04-11 20:13:25,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:13:25,341 INFO L225 Difference]: With dead ends: 89 [2018-04-11 20:13:25,341 INFO L226 Difference]: Without dead ends: 88 [2018-04-11 20:13:25,342 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-04-11 20:13:25,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-04-11 20:13:25,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-04-11 20:13:25,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-04-11 20:13:25,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2018-04-11 20:13:25,347 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 25 [2018-04-11 20:13:25,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:13:25,348 INFO L459 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2018-04-11 20:13:25,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-11 20:13:25,348 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2018-04-11 20:13:25,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-04-11 20:13:25,349 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:13:25,349 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:13:25,349 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:13:25,350 INFO L82 PathProgramCache]: Analyzing trace with hash -506179908, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:13:25,360 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:13:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:13:25,380 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:13:25,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:25,418 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:13:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:25,456 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:13:25,456 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2018-04-11 20:13:25,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-11 20:13:25,457 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-11 20:13:25,457 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-04-11 20:13:25,458 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand 6 states. [2018-04-11 20:13:25,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:13:25,549 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2018-04-11 20:13:25,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-11 20:13:25,550 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2018-04-11 20:13:25,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:13:25,551 INFO L225 Difference]: With dead ends: 118 [2018-04-11 20:13:25,551 INFO L226 Difference]: Without dead ends: 114 [2018-04-11 20:13:25,551 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-04-11 20:13:25,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-04-11 20:13:25,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 101. [2018-04-11 20:13:25,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-04-11 20:13:25,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 114 transitions. [2018-04-11 20:13:25,560 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 114 transitions. Word has length 32 [2018-04-11 20:13:25,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:13:25,560 INFO L459 AbstractCegarLoop]: Abstraction has 101 states and 114 transitions. [2018-04-11 20:13:25,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-11 20:13:25,561 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 114 transitions. [2018-04-11 20:13:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-04-11 20:13:25,562 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:13:25,562 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:13:25,562 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:13:25,562 INFO L82 PathProgramCache]: Analyzing trace with hash -506179907, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:13:25,582 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:13:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:13:25,601 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:13:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:25,675 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:13:25,688 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-04-11 20:13:25,688 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:25,694 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2018-04-11 20:13:25,695 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:25,697 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:13:25,697 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:7 [2018-04-11 20:13:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:25,731 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:13:25,732 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2018-04-11 20:13:25,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-04-11 20:13:25,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-04-11 20:13:25,732 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-04-11 20:13:25,732 INFO L87 Difference]: Start difference. First operand 101 states and 114 transitions. Second operand 10 states. [2018-04-11 20:13:25,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:13:25,874 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2018-04-11 20:13:25,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-11 20:13:25,875 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2018-04-11 20:13:25,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:13:25,876 INFO L225 Difference]: With dead ends: 114 [2018-04-11 20:13:25,876 INFO L226 Difference]: Without dead ends: 110 [2018-04-11 20:13:25,876 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-04-11 20:13:25,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-04-11 20:13:25,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 100. [2018-04-11 20:13:25,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-04-11 20:13:25,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2018-04-11 20:13:25,884 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 32 [2018-04-11 20:13:25,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:13:25,884 INFO L459 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2018-04-11 20:13:25,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-04-11 20:13:25,884 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2018-04-11 20:13:25,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-04-11 20:13:25,886 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:13:25,886 INFO L355 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:13:25,886 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:13:25,886 INFO L82 PathProgramCache]: Analyzing trace with hash -963804542, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:13:25,896 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:13:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:13:25,920 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:13:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-11 20:13:25,948 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:13:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-11 20:13:25,975 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:13:25,975 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2018-04-11 20:13:25,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-11 20:13:25,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-11 20:13:25,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-04-11 20:13:25,976 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 7 states. [2018-04-11 20:13:26,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:13:26,063 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2018-04-11 20:13:26,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-11 20:13:26,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-04-11 20:13:26,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:13:26,064 INFO L225 Difference]: With dead ends: 110 [2018-04-11 20:13:26,065 INFO L226 Difference]: Without dead ends: 109 [2018-04-11 20:13:26,065 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-04-11 20:13:26,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-04-11 20:13:26,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2018-04-11 20:13:26,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-04-11 20:13:26,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2018-04-11 20:13:26,070 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 39 [2018-04-11 20:13:26,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:13:26,071 INFO L459 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2018-04-11 20:13:26,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-11 20:13:26,071 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2018-04-11 20:13:26,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-04-11 20:13:26,072 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:13:26,072 INFO L355 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:13:26,072 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:13:26,072 INFO L82 PathProgramCache]: Analyzing trace with hash -963804541, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:13:26,080 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:13:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:13:26,100 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:13:26,118 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:13:26,118 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:26,125 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:13:26,126 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:26,131 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:13:26,132 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2018-04-11 20:13:26,159 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:13:26,169 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:13:26,170 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-11 20:13:26,170 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:26,197 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:13:26,198 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 23 [2018-04-11 20:13:26,198 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:26,205 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:13:26,206 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:18 [2018-04-11 20:13:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:26,357 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:13:26,547 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2018-04-11 20:13:26,547 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:26,551 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 15 [2018-04-11 20:13:26,565 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2018-04-11 20:13:26,565 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:26,566 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-04-11 20:13:26,566 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:26,569 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:13:26,572 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:13:26,572 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:21, output treesize:3 [2018-04-11 20:13:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:26,632 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:13:26,632 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2018-04-11 20:13:26,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-04-11 20:13:26,633 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-04-11 20:13:26,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2018-04-11 20:13:26,633 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand 24 states. [2018-04-11 20:13:27,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:13:27,393 INFO L93 Difference]: Finished difference Result 183 states and 199 transitions. [2018-04-11 20:13:27,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-11 20:13:27,393 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 39 [2018-04-11 20:13:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:13:27,396 INFO L225 Difference]: With dead ends: 183 [2018-04-11 20:13:27,396 INFO L226 Difference]: Without dead ends: 182 [2018-04-11 20:13:27,397 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=197, Invalid=1063, Unknown=0, NotChecked=0, Total=1260 [2018-04-11 20:13:27,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-04-11 20:13:27,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 106. [2018-04-11 20:13:27,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-04-11 20:13:27,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2018-04-11 20:13:27,405 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 39 [2018-04-11 20:13:27,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:13:27,406 INFO L459 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2018-04-11 20:13:27,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-04-11 20:13:27,406 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2018-04-11 20:13:27,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-04-11 20:13:27,407 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:13:27,407 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:13:27,407 INFO L408 AbstractCegarLoop]: === Iteration 10 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:13:27,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1123521185, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:13:27,418 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:13:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:13:27,437 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:13:27,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:27,503 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:13:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:27,526 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:13:27,527 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2018-04-11 20:13:27,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-11 20:13:27,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-11 20:13:27,527 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-04-11 20:13:27,527 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand 6 states. [2018-04-11 20:13:27,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:13:27,589 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2018-04-11 20:13:27,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-11 20:13:27,589 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2018-04-11 20:13:27,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:13:27,591 INFO L225 Difference]: With dead ends: 113 [2018-04-11 20:13:27,591 INFO L226 Difference]: Without dead ends: 112 [2018-04-11 20:13:27,591 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-04-11 20:13:27,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-04-11 20:13:27,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 105. [2018-04-11 20:13:27,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-04-11 20:13:27,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2018-04-11 20:13:27,600 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 40 [2018-04-11 20:13:27,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:13:27,600 INFO L459 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2018-04-11 20:13:27,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-11 20:13:27,608 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2018-04-11 20:13:27,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-04-11 20:13:27,609 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:13:27,610 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:13:27,610 INFO L408 AbstractCegarLoop]: === Iteration 11 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:13:27,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1123521186, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:13:27,624 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:13:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:13:27,642 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:13:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:27,724 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:13:27,730 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2018-04-11 20:13:27,730 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:27,736 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2018-04-11 20:13:27,737 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:27,740 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:13:27,740 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2018-04-11 20:13:27,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:27,770 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:13:27,770 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2018-04-11 20:13:27,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-11 20:13:27,770 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-11 20:13:27,770 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-04-11 20:13:27,771 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand 9 states. [2018-04-11 20:13:27,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:13:27,884 INFO L93 Difference]: Finished difference Result 143 states and 157 transitions. [2018-04-11 20:13:27,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-11 20:13:27,885 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2018-04-11 20:13:27,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:13:27,886 INFO L225 Difference]: With dead ends: 143 [2018-04-11 20:13:27,886 INFO L226 Difference]: Without dead ends: 142 [2018-04-11 20:13:27,886 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-04-11 20:13:27,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-04-11 20:13:27,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 122. [2018-04-11 20:13:27,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-04-11 20:13:27,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 134 transitions. [2018-04-11 20:13:27,892 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 134 transitions. Word has length 40 [2018-04-11 20:13:27,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:13:27,892 INFO L459 AbstractCegarLoop]: Abstraction has 122 states and 134 transitions. [2018-04-11 20:13:27,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-11 20:13:27,892 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 134 transitions. [2018-04-11 20:13:27,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-04-11 20:13:27,893 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:13:27,893 INFO L355 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:13:27,893 INFO L408 AbstractCegarLoop]: === Iteration 12 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:13:27,894 INFO L82 PathProgramCache]: Analyzing trace with hash 63808509, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:13:27,899 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:13:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:13:27,918 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:13:27,926 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:13:27,927 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:27,933 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:13:27,933 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2018-04-11 20:13:27,951 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:13:27,952 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:13:27,953 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-11 20:13:27,953 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:27,957 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:13:27,957 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:13 [2018-04-11 20:13:27,978 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 14 [2018-04-11 20:13:27,980 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2018-04-11 20:13:27,980 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:27,983 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:13:27,997 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-11 20:13:27,998 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:39, output treesize:35 [2018-04-11 20:13:28,025 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 29 [2018-04-11 20:13:28,027 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-04-11 20:13:28,028 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:28,032 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:13:28,040 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2018-04-11 20:13:28,040 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:49, output treesize:45 [2018-04-11 20:13:30,262 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2018-04-11 20:13:30,264 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2018-04-11 20:13:30,265 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:30,272 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:13:30,280 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 37 [2018-04-11 20:13:30,281 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-04-11 20:13:30,295 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:13:30,313 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:13:30,314 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:70, output treesize:43 [2018-04-11 20:13:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:30,426 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:13:30,928 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-04-11 20:13:30,928 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:30,937 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2018-04-11 20:13:30,955 INFO L682 Elim1Store]: detected equality via solver [2018-04-11 20:13:30,956 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-04-11 20:13:30,956 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-11 20:13:30,960 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:13:30,967 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:13:30,967 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:58, output treesize:14 [2018-04-11 20:13:31,030 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:13:31,050 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:13:31,050 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 34 [2018-04-11 20:13:31,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-04-11 20:13:31,050 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-04-11 20:13:31,051 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1064, Unknown=1, NotChecked=0, Total=1190 [2018-04-11 20:13:31,051 INFO L87 Difference]: Start difference. First operand 122 states and 134 transitions. Second operand 35 states. [2018-04-11 20:13:36,404 WARN L148 SmtUtils]: Spent 4030ms on a formula simplification that was a NOOP. DAG size: 87 [2018-04-11 20:13:37,344 WARN L151 SmtUtils]: Spent 874ms on a formula simplification. DAG size of input: 70 DAG size of output 66 [2018-04-11 20:13:37,668 WARN L151 SmtUtils]: Spent 271ms on a formula simplification. DAG size of input: 83 DAG size of output 69 [2018-04-11 20:13:41,861 WARN L151 SmtUtils]: Spent 4127ms on a formula simplification. DAG size of input: 79 DAG size of output 71 [2018-04-11 20:13:46,348 WARN L151 SmtUtils]: Spent 2340ms on a formula simplification. DAG size of input: 77 DAG size of output 70 [2018-04-11 20:13:49,860 WARN L151 SmtUtils]: Spent 3446ms on a formula simplification. DAG size of input: 97 DAG size of output 87 [2018-04-11 20:13:54,107 WARN L151 SmtUtils]: Spent 4191ms on a formula simplification. DAG size of input: 94 DAG size of output 84 [2018-04-11 20:14:00,302 WARN L151 SmtUtils]: Spent 4135ms on a formula simplification. DAG size of input: 74 DAG size of output 67 [2018-04-11 20:14:03,534 WARN L151 SmtUtils]: Spent 2334ms on a formula simplification. DAG size of input: 84 DAG size of output 71 [2018-04-11 20:14:05,799 WARN L151 SmtUtils]: Spent 144ms on a formula simplification. DAG size of input: 82 DAG size of output 72 [2018-04-11 20:14:06,516 WARN L151 SmtUtils]: Spent 485ms on a formula simplification. DAG size of input: 100 DAG size of output 87 [2018-04-11 20:14:10,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:14:10,076 INFO L93 Difference]: Finished difference Result 268 states and 289 transitions. [2018-04-11 20:14:10,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-04-11 20:14:10,076 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 46 [2018-04-11 20:14:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:14:10,078 INFO L225 Difference]: With dead ends: 268 [2018-04-11 20:14:10,079 INFO L226 Difference]: Without dead ends: 267 [2018-04-11 20:14:10,080 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 34.8s TimeCoverageRelationStatistics Valid=741, Invalid=3948, Unknown=3, NotChecked=0, Total=4692 [2018-04-11 20:14:10,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-04-11 20:14:10,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 112. [2018-04-11 20:14:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-04-11 20:14:10,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2018-04-11 20:14:10,086 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 46 [2018-04-11 20:14:10,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:14:10,086 INFO L459 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2018-04-11 20:14:10,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-04-11 20:14:10,086 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2018-04-11 20:14:10,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-04-11 20:14:10,087 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:14:10,087 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:14:10,087 INFO L408 AbstractCegarLoop]: === Iteration 13 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:14:10,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1465279656, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:14:10,093 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:14:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:14:10,113 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:14:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:10,151 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:14:10,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:10,265 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:14:10,265 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2018-04-11 20:14:10,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-11 20:14:10,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-11 20:14:10,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-04-11 20:14:10,266 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand 7 states. [2018-04-11 20:14:10,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:14:10,308 INFO L93 Difference]: Finished difference Result 193 states and 210 transitions. [2018-04-11 20:14:10,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-11 20:14:10,308 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2018-04-11 20:14:10,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:14:10,309 INFO L225 Difference]: With dead ends: 193 [2018-04-11 20:14:10,310 INFO L226 Difference]: Without dead ends: 163 [2018-04-11 20:14:10,310 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-04-11 20:14:10,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-04-11 20:14:10,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 135. [2018-04-11 20:14:10,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-04-11 20:14:10,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 151 transitions. [2018-04-11 20:14:10,318 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 151 transitions. Word has length 54 [2018-04-11 20:14:10,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:14:10,318 INFO L459 AbstractCegarLoop]: Abstraction has 135 states and 151 transitions. [2018-04-11 20:14:10,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-11 20:14:10,319 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 151 transitions. [2018-04-11 20:14:10,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-04-11 20:14:10,320 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:14:10,320 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:14:10,320 INFO L408 AbstractCegarLoop]: === Iteration 14 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:14:10,320 INFO L82 PathProgramCache]: Analyzing trace with hash 834800017, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:14:10,326 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:14:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:14:10,343 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:14:10,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:10,348 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:14:10,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:10,381 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:14:10,382 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-04-11 20:14:10,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-11 20:14:10,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-11 20:14:10,382 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-11 20:14:10,382 INFO L87 Difference]: Start difference. First operand 135 states and 151 transitions. Second operand 3 states. [2018-04-11 20:14:10,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:14:10,395 INFO L93 Difference]: Finished difference Result 182 states and 201 transitions. [2018-04-11 20:14:10,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-11 20:14:10,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2018-04-11 20:14:10,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:14:10,396 INFO L225 Difference]: With dead ends: 182 [2018-04-11 20:14:10,396 INFO L226 Difference]: Without dead ends: 95 [2018-04-11 20:14:10,397 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-11 20:14:10,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-04-11 20:14:10,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-04-11 20:14:10,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-04-11 20:14:10,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2018-04-11 20:14:10,404 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 54 [2018-04-11 20:14:10,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:14:10,404 INFO L459 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2018-04-11 20:14:10,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-11 20:14:10,404 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2018-04-11 20:14:10,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-04-11 20:14:10,405 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:14:10,405 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:14:10,405 INFO L408 AbstractCegarLoop]: === Iteration 15 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:14:10,406 INFO L82 PathProgramCache]: Analyzing trace with hash -269889426, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:14:10,420 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:14:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:14:10,441 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:14:10,454 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-04-11 20:14:10,456 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-04-11 20:14:10,456 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:10,458 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:10,463 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-11 20:14:10,463 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2018-04-11 20:14:10,536 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-04-11 20:14:10,542 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 13 [2018-04-11 20:14:10,543 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-11 20:14:10,546 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:14:10,554 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:14:10,555 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:29 [2018-04-11 20:14:10,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:10,637 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:14:10,841 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2018-04-11 20:14:10,841 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:10,847 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-04-11 20:14:10,855 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2018-04-11 20:14:10,856 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:10,857 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:10,861 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:10,862 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:35, output treesize:7 [2018-04-11 20:14:10,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:10,890 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:14:10,891 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-04-11 20:14:10,891 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-04-11 20:14:10,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-04-11 20:14:10,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2018-04-11 20:14:10,891 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand 21 states. [2018-04-11 20:14:11,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:14:11,605 INFO L93 Difference]: Finished difference Result 141 states and 151 transitions. [2018-04-11 20:14:11,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-11 20:14:11,605 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2018-04-11 20:14:11,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:14:11,606 INFO L225 Difference]: With dead ends: 141 [2018-04-11 20:14:11,606 INFO L226 Difference]: Without dead ends: 140 [2018-04-11 20:14:11,607 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2018-04-11 20:14:11,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-04-11 20:14:11,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 112. [2018-04-11 20:14:11,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-04-11 20:14:11,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 120 transitions. [2018-04-11 20:14:11,613 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 120 transitions. Word has length 58 [2018-04-11 20:14:11,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:14:11,614 INFO L459 AbstractCegarLoop]: Abstraction has 112 states and 120 transitions. [2018-04-11 20:14:11,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-04-11 20:14:11,614 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 120 transitions. [2018-04-11 20:14:11,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-04-11 20:14:11,615 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:14:11,615 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:14:11,615 INFO L408 AbstractCegarLoop]: === Iteration 16 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:14:11,615 INFO L82 PathProgramCache]: Analyzing trace with hash 853842009, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:14:11,621 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:14:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:14:11,639 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:14:11,662 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:11,663 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2018-04-11 20:14:11,665 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:11,665 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-04-11 20:14:11,665 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:11,672 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:11,676 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-11 20:14:11,676 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-04-11 20:14:11,726 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc13.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc13.base| 1))) (and (= (select .cse0 |c_main_#t~malloc14.base|) 0) (= 0 (select |c_old(#valid)| |main_#t~malloc13.base|)) (= |c_#valid| (store (store .cse0 |c_main_#t~malloc14.base| 1) |main_#t~malloc13.base| 0))))) is different from true [2018-04-11 20:14:11,731 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc13.base| Int) (|main_#t~malloc14.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc13.base| 1))) (and (= (select .cse0 |main_#t~malloc14.base|) 0) (= 0 (select |c_old(#valid)| |main_#t~malloc13.base|)) (= |c_#valid| (store (store (store .cse0 |main_#t~malloc14.base| 1) |main_#t~malloc13.base| 0) |main_#t~malloc14.base| 0))))) is different from true [2018-04-11 20:14:11,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:11,739 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:14:11,761 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc14.base_17| Int)) (or (not (= (select |c_#valid| |v_main_#t~malloc14.base_17|) 0)) (= |c_old(#valid)| (store (store (store |c_#valid| |v_main_#t~malloc14.base_17| 1) |c_main_#t~malloc13.base| 0) |v_main_#t~malloc14.base_17| 0)))) is different from false [2018-04-11 20:14:11,765 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc13.base_16| Int) (|v_main_#t~malloc14.base_17| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc13.base_16| 1))) (or (= |c_old(#valid)| (store (store (store .cse0 |v_main_#t~malloc14.base_17| 1) |v_main_#t~malloc13.base_16| 0) |v_main_#t~malloc14.base_17| 0)) (not (= 0 (select |c_#valid| |v_main_#t~malloc13.base_16|))) (not (= (select .cse0 |v_main_#t~malloc14.base_17|) 0))))) is different from false [2018-04-11 20:14:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:11,834 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:14:11,834 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-04-11 20:14:11,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-11 20:14:11,834 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-11 20:14:11,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-04-11 20:14:11,835 INFO L87 Difference]: Start difference. First operand 112 states and 120 transitions. Second operand 12 states. [2018-04-11 20:14:11,852 WARN L1011 $PredicateComparison]: unable to prove that (and (= |c_#valid| |c_old(#valid)|) (forall ((|v_main_#t~malloc13.base_16| Int) (|v_main_#t~malloc14.base_17| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc13.base_16| 1))) (or (= |c_old(#valid)| (store (store (store .cse0 |v_main_#t~malloc14.base_17| 1) |v_main_#t~malloc13.base_16| 0) |v_main_#t~malloc14.base_17| 0)) (not (= 0 (select |c_#valid| |v_main_#t~malloc13.base_16|))) (not (= (select .cse0 |v_main_#t~malloc14.base_17|) 0)))))) is different from false [2018-04-11 20:14:12,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:14:12,392 INFO L93 Difference]: Finished difference Result 205 states and 220 transitions. [2018-04-11 20:14:12,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-11 20:14:12,393 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2018-04-11 20:14:12,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:14:12,394 INFO L225 Difference]: With dead ends: 205 [2018-04-11 20:14:12,394 INFO L226 Difference]: Without dead ends: 186 [2018-04-11 20:14:12,395 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-04-11 20:14:12,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-04-11 20:14:12,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2018-04-11 20:14:12,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-04-11 20:14:12,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 198 transitions. [2018-04-11 20:14:12,408 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 198 transitions. Word has length 59 [2018-04-11 20:14:12,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:14:12,408 INFO L459 AbstractCegarLoop]: Abstraction has 181 states and 198 transitions. [2018-04-11 20:14:12,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-11 20:14:12,408 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 198 transitions. [2018-04-11 20:14:12,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-04-11 20:14:12,409 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:14:12,409 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:14:12,409 INFO L408 AbstractCegarLoop]: === Iteration 17 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:14:12,410 INFO L82 PathProgramCache]: Analyzing trace with hash 223362370, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:14:12,418 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:14:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:14:12,446 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:14:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-04-11 20:14:12,486 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:14:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-04-11 20:14:12,530 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:14:12,531 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2018-04-11 20:14:12,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-11 20:14:12,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-11 20:14:12,531 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-04-11 20:14:12,532 INFO L87 Difference]: Start difference. First operand 181 states and 198 transitions. Second operand 7 states. [2018-04-11 20:14:12,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:14:12,620 INFO L93 Difference]: Finished difference Result 185 states and 202 transitions. [2018-04-11 20:14:12,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-11 20:14:12,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2018-04-11 20:14:12,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:14:12,621 INFO L225 Difference]: With dead ends: 185 [2018-04-11 20:14:12,621 INFO L226 Difference]: Without dead ends: 183 [2018-04-11 20:14:12,622 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-04-11 20:14:12,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-04-11 20:14:12,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-04-11 20:14:12,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-04-11 20:14:12,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 194 transitions. [2018-04-11 20:14:12,631 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 194 transitions. Word has length 59 [2018-04-11 20:14:12,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:14:12,631 INFO L459 AbstractCegarLoop]: Abstraction has 179 states and 194 transitions. [2018-04-11 20:14:12,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-11 20:14:12,631 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 194 transitions. [2018-04-11 20:14:12,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-04-11 20:14:12,631 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:14:12,632 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:14:12,632 INFO L408 AbstractCegarLoop]: === Iteration 18 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:14:12,632 INFO L82 PathProgramCache]: Analyzing trace with hash 223362371, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:14:12,647 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:14:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:14:12,667 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:14:12,681 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:14:12,682 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:12,685 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:12,685 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:7 [2018-04-11 20:14:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:12,849 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:14:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:13,281 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:14:13,282 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2018-04-11 20:14:13,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-04-11 20:14:13,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-04-11 20:14:13,283 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2018-04-11 20:14:13,283 INFO L87 Difference]: Start difference. First operand 179 states and 194 transitions. Second operand 34 states. [2018-04-11 20:14:14,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:14:14,655 INFO L93 Difference]: Finished difference Result 335 states and 366 transitions. [2018-04-11 20:14:14,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-04-11 20:14:14,655 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 59 [2018-04-11 20:14:14,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:14:14,656 INFO L225 Difference]: With dead ends: 335 [2018-04-11 20:14:14,657 INFO L226 Difference]: Without dead ends: 334 [2018-04-11 20:14:14,657 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=523, Invalid=3259, Unknown=0, NotChecked=0, Total=3782 [2018-04-11 20:14:14,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-04-11 20:14:14,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 273. [2018-04-11 20:14:14,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-04-11 20:14:14,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 298 transitions. [2018-04-11 20:14:14,669 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 298 transitions. Word has length 59 [2018-04-11 20:14:14,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:14:14,669 INFO L459 AbstractCegarLoop]: Abstraction has 273 states and 298 transitions. [2018-04-11 20:14:14,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-04-11 20:14:14,669 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 298 transitions. [2018-04-11 20:14:14,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-04-11 20:14:14,670 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:14:14,670 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:14:14,670 INFO L408 AbstractCegarLoop]: === Iteration 19 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:14:14,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1771820582, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:14:14,682 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:14:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:14:14,698 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:14:14,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:14,710 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:14:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:14,747 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:14:14,748 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-04-11 20:14:14,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-11 20:14:14,748 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-11 20:14:14,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-04-11 20:14:14,749 INFO L87 Difference]: Start difference. First operand 273 states and 298 transitions. Second operand 7 states. [2018-04-11 20:14:14,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:14:14,814 INFO L93 Difference]: Finished difference Result 412 states and 449 transitions. [2018-04-11 20:14:14,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-11 20:14:14,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2018-04-11 20:14:14,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:14:14,816 INFO L225 Difference]: With dead ends: 412 [2018-04-11 20:14:14,816 INFO L226 Difference]: Without dead ends: 271 [2018-04-11 20:14:14,817 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-04-11 20:14:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-04-11 20:14:14,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-04-11 20:14:14,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-04-11 20:14:14,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 294 transitions. [2018-04-11 20:14:14,832 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 294 transitions. Word has length 60 [2018-04-11 20:14:14,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:14:14,833 INFO L459 AbstractCegarLoop]: Abstraction has 271 states and 294 transitions. [2018-04-11 20:14:14,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-11 20:14:14,833 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 294 transitions. [2018-04-11 20:14:14,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-04-11 20:14:14,834 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:14:14,834 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:14:14,834 INFO L408 AbstractCegarLoop]: === Iteration 20 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:14:14,834 INFO L82 PathProgramCache]: Analyzing trace with hash 8763489, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:14:14,843 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:14:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:14:14,872 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:14:14,907 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:14,908 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-04-11 20:14:14,916 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-04-11 20:14:14,916 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:14,926 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:14,930 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-11 20:14:14,930 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-04-11 20:14:14,963 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc13.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc13.base| 1))) (and (= (select .cse0 |c_main_#t~malloc14.base|) 0) (= 0 (select |c_old(#valid)| |main_#t~malloc13.base|)) (= |c_#valid| (store (store .cse0 |c_main_#t~malloc14.base| 1) |main_#t~malloc13.base| 0))))) is different from true [2018-04-11 20:14:14,966 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc13.base| Int) (|main_#t~malloc14.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc13.base| 1))) (and (= (select .cse0 |main_#t~malloc14.base|) 0) (= 0 (select |c_old(#valid)| |main_#t~malloc13.base|)) (= |c_#valid| (store (store (store .cse0 |main_#t~malloc14.base| 1) |main_#t~malloc13.base| 0) |main_#t~malloc14.base| 0))))) is different from true [2018-04-11 20:14:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:14,973 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:14:14,992 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc14.base_22| Int)) (or (= |c_old(#valid)| (store (store (store |c_#valid| |v_main_#t~malloc14.base_22| 1) |c_main_#t~malloc13.base| 0) |v_main_#t~malloc14.base_22| 0)) (not (= (select |c_#valid| |v_main_#t~malloc14.base_22|) 0)))) is different from false [2018-04-11 20:14:15,007 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc14.base_22| Int) (|v_main_#t~malloc13.base_21| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc13.base_21| 1))) (or (= (store (store (store .cse0 |v_main_#t~malloc14.base_22| 1) |v_main_#t~malloc13.base_21| 0) |v_main_#t~malloc14.base_22| 0) |c_old(#valid)|) (not (= (select |c_#valid| |v_main_#t~malloc13.base_21|) 0)) (not (= (select .cse0 |v_main_#t~malloc14.base_22|) 0))))) is different from false [2018-04-11 20:14:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:15,049 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:14:15,050 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-04-11 20:14:15,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-11 20:14:15,050 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-11 20:14:15,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-04-11 20:14:15,051 INFO L87 Difference]: Start difference. First operand 271 states and 294 transitions. Second operand 12 states. [2018-04-11 20:14:15,078 WARN L1011 $PredicateComparison]: unable to prove that (and (= |c_#valid| |c_old(#valid)|) (forall ((|v_main_#t~malloc14.base_22| Int) (|v_main_#t~malloc13.base_21| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc13.base_21| 1))) (or (= (store (store (store .cse0 |v_main_#t~malloc14.base_22| 1) |v_main_#t~malloc13.base_21| 0) |v_main_#t~malloc14.base_22| 0) |c_old(#valid)|) (not (= (select |c_#valid| |v_main_#t~malloc13.base_21|) 0)) (not (= (select .cse0 |v_main_#t~malloc14.base_22|) 0)))))) is different from false [2018-04-11 20:14:15,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:14:15,631 INFO L93 Difference]: Finished difference Result 407 states and 441 transitions. [2018-04-11 20:14:15,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-11 20:14:15,631 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2018-04-11 20:14:15,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:14:15,632 INFO L225 Difference]: With dead ends: 407 [2018-04-11 20:14:15,633 INFO L226 Difference]: Without dead ends: 388 [2018-04-11 20:14:15,633 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 109 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-04-11 20:14:15,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-04-11 20:14:15,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 270. [2018-04-11 20:14:15,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-04-11 20:14:15,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 292 transitions. [2018-04-11 20:14:15,643 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 292 transitions. Word has length 60 [2018-04-11 20:14:15,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:14:15,644 INFO L459 AbstractCegarLoop]: Abstraction has 270 states and 292 transitions. [2018-04-11 20:14:15,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-11 20:14:15,644 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 292 transitions. [2018-04-11 20:14:15,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-04-11 20:14:15,644 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:14:15,644 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:14:15,645 INFO L408 AbstractCegarLoop]: === Iteration 21 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:14:15,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1710677306, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:14:15,651 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:14:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:14:15,673 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:14:15,726 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:15,727 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-04-11 20:14:15,729 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-04-11 20:14:15,729 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:15,732 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:15,736 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-11 20:14:15,737 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-04-11 20:14:15,769 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc13.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc13.base| 1))) (and (= (select .cse0 |c_main_#t~malloc14.base|) 0) (= 0 (select |c_old(#valid)| |main_#t~malloc13.base|)) (= |c_#valid| (store (store .cse0 |c_main_#t~malloc14.base| 1) |main_#t~malloc13.base| 0))))) is different from true [2018-04-11 20:14:15,777 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc13.base| Int) (|main_#t~malloc14.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc13.base| 1))) (and (= (select .cse0 |main_#t~malloc14.base|) 0) (= 0 (select |c_old(#valid)| |main_#t~malloc13.base|)) (= |c_#valid| (store (store (store .cse0 |main_#t~malloc14.base| 1) |main_#t~malloc13.base| 0) |main_#t~malloc14.base| 0))))) is different from true [2018-04-11 20:14:15,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:15,784 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:14:15,826 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc14.base_24| Int)) (or (= (store (store (store |c_#valid| |v_main_#t~malloc14.base_24| 1) |c_main_#t~malloc13.base| 0) |v_main_#t~malloc14.base_24| 0) |c_old(#valid)|) (not (= (select |c_#valid| |v_main_#t~malloc14.base_24|) 0)))) is different from false [2018-04-11 20:14:15,830 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc14.base_24| Int) (|v_main_#t~malloc13.base_23| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc13.base_23| 1))) (or (not (= (select .cse0 |v_main_#t~malloc14.base_24|) 0)) (not (= (select |c_#valid| |v_main_#t~malloc13.base_23|) 0)) (= |c_old(#valid)| (store (store (store .cse0 |v_main_#t~malloc14.base_24| 1) |v_main_#t~malloc13.base_23| 0) |v_main_#t~malloc14.base_24| 0))))) is different from false [2018-04-11 20:14:15,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:15,869 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:14:15,869 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-04-11 20:14:15,870 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-11 20:14:15,870 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-11 20:14:15,870 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-04-11 20:14:15,870 INFO L87 Difference]: Start difference. First operand 270 states and 292 transitions. Second operand 12 states. [2018-04-11 20:14:15,882 WARN L1011 $PredicateComparison]: unable to prove that (and (forall ((|v_main_#t~malloc14.base_24| Int) (|v_main_#t~malloc13.base_23| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc13.base_23| 1))) (or (not (= (select .cse0 |v_main_#t~malloc14.base_24|) 0)) (not (= (select |c_#valid| |v_main_#t~malloc13.base_23|) 0)) (= |c_old(#valid)| (store (store (store .cse0 |v_main_#t~malloc14.base_24| 1) |v_main_#t~malloc13.base_23| 0) |v_main_#t~malloc14.base_24| 0))))) (= |c_#valid| |c_old(#valid)|)) is different from false [2018-04-11 20:14:16,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:14:16,323 INFO L93 Difference]: Finished difference Result 408 states and 442 transitions. [2018-04-11 20:14:16,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-11 20:14:16,324 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2018-04-11 20:14:16,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:14:16,325 INFO L225 Difference]: With dead ends: 408 [2018-04-11 20:14:16,326 INFO L226 Difference]: Without dead ends: 389 [2018-04-11 20:14:16,326 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 109 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-04-11 20:14:16,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-04-11 20:14:16,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 272. [2018-04-11 20:14:16,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2018-04-11 20:14:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 295 transitions. [2018-04-11 20:14:16,343 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 295 transitions. Word has length 60 [2018-04-11 20:14:16,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:14:16,343 INFO L459 AbstractCegarLoop]: Abstraction has 272 states and 295 transitions. [2018-04-11 20:14:16,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-11 20:14:16,344 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 295 transitions. [2018-04-11 20:14:16,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-04-11 20:14:16,344 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:14:16,345 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:14:16,345 INFO L408 AbstractCegarLoop]: === Iteration 22 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:14:16,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1337420224, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:14:16,356 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:14:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:14:16,388 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:14:16,437 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:14:16,438 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:16,448 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:14:16,449 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:16,457 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:16,457 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2018-04-11 20:14:16,499 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:16,500 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:16,501 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 23 [2018-04-11 20:14:16,501 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:16,526 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:16,527 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:16,528 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-11 20:14:16,528 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:16,534 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:16,534 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:18 [2018-04-11 20:14:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:16,687 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:14:16,886 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2018-04-11 20:14:16,886 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:16,890 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 15 [2018-04-11 20:14:16,898 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-04-11 20:14:16,898 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:16,900 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2018-04-11 20:14:16,900 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:16,903 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:16,906 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:16,906 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:21, output treesize:3 [2018-04-11 20:14:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:16,964 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:14:16,964 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2018-04-11 20:14:16,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-04-11 20:14:16,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-04-11 20:14:16,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2018-04-11 20:14:16,965 INFO L87 Difference]: Start difference. First operand 272 states and 295 transitions. Second operand 26 states. [2018-04-11 20:14:18,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:14:18,265 INFO L93 Difference]: Finished difference Result 311 states and 336 transitions. [2018-04-11 20:14:18,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-04-11 20:14:18,267 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 60 [2018-04-11 20:14:18,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:14:18,268 INFO L225 Difference]: With dead ends: 311 [2018-04-11 20:14:18,268 INFO L226 Difference]: Without dead ends: 305 [2018-04-11 20:14:18,269 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=220, Invalid=1262, Unknown=0, NotChecked=0, Total=1482 [2018-04-11 20:14:18,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-04-11 20:14:18,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 273. [2018-04-11 20:14:18,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-04-11 20:14:18,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 295 transitions. [2018-04-11 20:14:18,282 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 295 transitions. Word has length 60 [2018-04-11 20:14:18,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:14:18,282 INFO L459 AbstractCegarLoop]: Abstraction has 273 states and 295 transitions. [2018-04-11 20:14:18,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-04-11 20:14:18,282 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 295 transitions. [2018-04-11 20:14:18,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-04-11 20:14:18,283 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:14:18,283 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:14:18,283 INFO L408 AbstractCegarLoop]: === Iteration 23 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:14:18,283 INFO L82 PathProgramCache]: Analyzing trace with hash -2138307650, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:14:18,290 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:14:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:14:18,312 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:14:18,551 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:18,551 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-04-11 20:14:18,560 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-04-11 20:14:18,561 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:18,584 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:18,623 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-11 20:14:18,623 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-04-11 20:14:18,674 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc13.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc13.base| 1))) (and (= (select .cse0 |c_main_#t~malloc14.base|) 0) (= 0 (select |c_old(#valid)| |main_#t~malloc13.base|)) (= |c_#valid| (store (store .cse0 |c_main_#t~malloc14.base| 1) |main_#t~malloc13.base| 0))))) is different from true [2018-04-11 20:14:18,685 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc13.base| Int) (|main_#t~malloc14.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc13.base| 1))) (and (= (select .cse0 |main_#t~malloc14.base|) 0) (= 0 (select |c_old(#valid)| |main_#t~malloc13.base|)) (= |c_#valid| (store (store (store .cse0 |main_#t~malloc14.base| 1) |main_#t~malloc13.base| 0) |main_#t~malloc14.base| 0))))) is different from true [2018-04-11 20:14:18,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:18,693 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:14:18,781 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc14.base_27| Int)) (or (= (store (store (store |c_#valid| |v_main_#t~malloc14.base_27| 1) |c_main_#t~malloc13.base| 0) |v_main_#t~malloc14.base_27| 0) |c_old(#valid)|) (not (= 0 (select |c_#valid| |v_main_#t~malloc14.base_27|))))) is different from false [2018-04-11 20:14:18,784 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc13.base_26| Int) (|v_main_#t~malloc14.base_27| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc13.base_26| 1))) (or (not (= (select .cse0 |v_main_#t~malloc14.base_27|) 0)) (not (= 0 (select |c_#valid| |v_main_#t~malloc13.base_26|))) (= (store (store (store .cse0 |v_main_#t~malloc14.base_27| 1) |v_main_#t~malloc13.base_26| 0) |v_main_#t~malloc14.base_27| 0) |c_old(#valid)|)))) is different from false [2018-04-11 20:14:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:18,829 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 20:14:18,830 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-04-11 20:14:18,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-11 20:14:18,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-11 20:14:18,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-04-11 20:14:18,830 INFO L87 Difference]: Start difference. First operand 273 states and 295 transitions. Second operand 12 states. [2018-04-11 20:14:18,858 WARN L1011 $PredicateComparison]: unable to prove that (and (forall ((|v_main_#t~malloc13.base_26| Int) (|v_main_#t~malloc14.base_27| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc13.base_26| 1))) (or (not (= (select .cse0 |v_main_#t~malloc14.base_27|) 0)) (not (= 0 (select |c_#valid| |v_main_#t~malloc13.base_26|))) (= (store (store (store .cse0 |v_main_#t~malloc14.base_27| 1) |v_main_#t~malloc13.base_26| 0) |v_main_#t~malloc14.base_27| 0) |c_old(#valid)|)))) (= |c_#valid| |c_old(#valid)|)) is different from false [2018-04-11 20:14:19,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:14:19,450 INFO L93 Difference]: Finished difference Result 276 states and 295 transitions. [2018-04-11 20:14:19,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-11 20:14:19,450 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 61 [2018-04-11 20:14:19,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:14:19,451 INFO L225 Difference]: With dead ends: 276 [2018-04-11 20:14:19,452 INFO L226 Difference]: Without dead ends: 256 [2018-04-11 20:14:19,452 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-04-11 20:14:19,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-04-11 20:14:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 137. [2018-04-11 20:14:19,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-04-11 20:14:19,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 144 transitions. [2018-04-11 20:14:19,464 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 144 transitions. Word has length 61 [2018-04-11 20:14:19,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:14:19,464 INFO L459 AbstractCegarLoop]: Abstraction has 137 states and 144 transitions. [2018-04-11 20:14:19,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-11 20:14:19,465 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 144 transitions. [2018-04-11 20:14:19,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-04-11 20:14:19,465 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:14:19,466 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:14:19,466 INFO L408 AbstractCegarLoop]: === Iteration 24 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:14:19,466 INFO L82 PathProgramCache]: Analyzing trace with hash -484778563, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:14:19,476 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:14:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:14:19,509 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:14:19,533 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:14:19,534 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:19,549 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:14:19,549 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:19,557 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:19,558 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2018-04-11 20:14:19,597 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:19,598 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:19,599 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 23 [2018-04-11 20:14:19,599 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:19,614 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:19,615 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:19,616 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-11 20:14:19,616 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:19,634 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:19,634 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:16 [2018-04-11 20:14:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:20,319 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:14:20,935 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2018-04-11 20:14:20,935 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:20,940 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 15 [2018-04-11 20:14:20,951 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2018-04-11 20:14:20,951 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:20,954 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-04-11 20:14:20,954 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:20,961 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:20,965 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:20,965 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:24, output treesize:7 [2018-04-11 20:14:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:21,025 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:14:21,025 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21] total 43 [2018-04-11 20:14:21,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-04-11 20:14:21,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-04-11 20:14:21,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1757, Unknown=0, NotChecked=0, Total=1892 [2018-04-11 20:14:21,027 INFO L87 Difference]: Start difference. First operand 137 states and 144 transitions. Second operand 44 states. [2018-04-11 20:14:24,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:14:24,083 INFO L93 Difference]: Finished difference Result 210 states and 220 transitions. [2018-04-11 20:14:24,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-04-11 20:14:24,083 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 66 [2018-04-11 20:14:24,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:14:24,084 INFO L225 Difference]: With dead ends: 210 [2018-04-11 20:14:24,084 INFO L226 Difference]: Without dead ends: 209 [2018-04-11 20:14:24,085 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=861, Invalid=6795, Unknown=0, NotChecked=0, Total=7656 [2018-04-11 20:14:24,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-04-11 20:14:24,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 166. [2018-04-11 20:14:24,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-04-11 20:14:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 175 transitions. [2018-04-11 20:14:24,099 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 175 transitions. Word has length 66 [2018-04-11 20:14:24,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:14:24,099 INFO L459 AbstractCegarLoop]: Abstraction has 166 states and 175 transitions. [2018-04-11 20:14:24,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-04-11 20:14:24,099 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 175 transitions. [2018-04-11 20:14:24,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-04-11 20:14:24,100 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:14:24,100 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:14:24,100 INFO L408 AbstractCegarLoop]: === Iteration 25 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:14:24,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1814952698, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:14:24,109 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:14:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:14:24,139 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:14:24,153 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:14:24,153 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:24,186 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:14:24,186 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:24,195 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:24,195 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2018-04-11 20:14:24,223 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:24,224 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:24,225 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-11 20:14:24,225 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:24,241 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:24,241 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 23 [2018-04-11 20:14:24,242 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:24,249 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:24,249 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:19 [2018-04-11 20:14:24,275 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-04-11 20:14:24,277 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-04-11 20:14:24,277 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:24,279 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:24,284 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:24,285 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:34, output treesize:30 [2018-04-11 20:14:24,425 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-04-11 20:14:24,430 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 13 [2018-04-11 20:14:24,431 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-11 20:14:24,433 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:14:24,441 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2018-04-11 20:14:24,441 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:55 [2018-04-11 20:14:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:24,651 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:14:25,072 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-04-11 20:14:25,080 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2018-04-11 20:14:25,080 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:25,081 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:25,084 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:25,084 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:14 [2018-04-11 20:14:25,194 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2018-04-11 20:14:25,195 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:25,199 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 15 [2018-04-11 20:14:25,206 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-04-11 20:14:25,206 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:25,207 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2018-04-11 20:14:25,207 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:25,210 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:25,213 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:25,213 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:24, output treesize:7 [2018-04-11 20:14:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:25,297 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:14:25,297 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 41 [2018-04-11 20:14:25,297 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-04-11 20:14:25,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-04-11 20:14:25,298 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1590, Unknown=0, NotChecked=0, Total=1722 [2018-04-11 20:14:25,298 INFO L87 Difference]: Start difference. First operand 166 states and 175 transitions. Second operand 42 states. [2018-04-11 20:14:27,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:14:27,765 INFO L93 Difference]: Finished difference Result 194 states and 203 transitions. [2018-04-11 20:14:27,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-04-11 20:14:27,765 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 67 [2018-04-11 20:14:27,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:14:27,766 INFO L225 Difference]: With dead ends: 194 [2018-04-11 20:14:27,766 INFO L226 Difference]: Without dead ends: 188 [2018-04-11 20:14:27,768 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1165 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=625, Invalid=5227, Unknown=0, NotChecked=0, Total=5852 [2018-04-11 20:14:27,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-04-11 20:14:27,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 144. [2018-04-11 20:14:27,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-04-11 20:14:27,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2018-04-11 20:14:27,781 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 67 [2018-04-11 20:14:27,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:14:27,781 INFO L459 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2018-04-11 20:14:27,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-04-11 20:14:27,782 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2018-04-11 20:14:27,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-04-11 20:14:27,782 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:14:27,783 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:14:27,783 INFO L408 AbstractCegarLoop]: === Iteration 26 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:14:27,783 INFO L82 PathProgramCache]: Analyzing trace with hash 325820419, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:14:27,794 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:14:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:14:27,819 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:14:27,828 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:14:27,828 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:27,837 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:14:27,837 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:27,843 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:27,843 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:19 [2018-04-11 20:14:27,860 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:27,861 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:27,862 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 23 [2018-04-11 20:14:27,862 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:27,872 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:27,872 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:27,873 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-11 20:14:27,873 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:27,878 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:27,878 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:16 [2018-04-11 20:14:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:28,299 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:14:29,279 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2018-04-11 20:14:29,280 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:29,285 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 15 [2018-04-11 20:14:29,293 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2018-04-11 20:14:29,293 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:29,294 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-04-11 20:14:29,294 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:29,296 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:29,300 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:29,300 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:27, output treesize:10 [2018-04-11 20:14:29,353 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:29,372 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:14:29,372 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2018-04-11 20:14:29,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-04-11 20:14:29,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-04-11 20:14:29,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2797, Unknown=0, NotChecked=0, Total=2970 [2018-04-11 20:14:29,374 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand 55 states. [2018-04-11 20:14:33,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:14:33,927 INFO L93 Difference]: Finished difference Result 225 states and 236 transitions. [2018-04-11 20:14:33,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-04-11 20:14:33,927 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 73 [2018-04-11 20:14:33,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:14:33,928 INFO L225 Difference]: With dead ends: 225 [2018-04-11 20:14:33,928 INFO L226 Difference]: Without dead ends: 224 [2018-04-11 20:14:33,930 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1316, Invalid=11566, Unknown=0, NotChecked=0, Total=12882 [2018-04-11 20:14:33,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-04-11 20:14:33,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 173. [2018-04-11 20:14:33,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-04-11 20:14:33,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 183 transitions. [2018-04-11 20:14:33,941 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 183 transitions. Word has length 73 [2018-04-11 20:14:33,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:14:33,941 INFO L459 AbstractCegarLoop]: Abstraction has 173 states and 183 transitions. [2018-04-11 20:14:33,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-04-11 20:14:33,942 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 183 transitions. [2018-04-11 20:14:33,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-04-11 20:14:33,942 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:14:33,943 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:14:33,943 INFO L408 AbstractCegarLoop]: === Iteration 27 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:14:33,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1838779264, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:14:33,951 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:14:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:14:33,979 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:14:33,981 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:14:33,982 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:33,987 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:14:33,987 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:33,990 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:33,990 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-04-11 20:14:34,001 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:34,002 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 20:14:34,002 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:34,010 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:34,010 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:14:34,011 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-11 20:14:34,011 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:34,015 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:34,015 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-04-11 20:14:34,031 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2018-04-11 20:14:34,032 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2018-04-11 20:14:34,032 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:34,033 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:34,037 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:34,037 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2018-04-11 20:14:34,050 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 32 [2018-04-11 20:14:34,051 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-04-11 20:14:34,051 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:34,055 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:34,059 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-11 20:14:34,060 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:35, output treesize:31 [2018-04-11 20:14:34,212 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2018-04-11 20:14:34,218 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2018-04-11 20:14:34,218 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-11 20:14:34,225 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2018-04-11 20:14:34,225 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:34,229 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:14:34,234 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:14:34,235 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:41, output treesize:23 [2018-04-11 20:14:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:34,508 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:14:35,293 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-04-11 20:14:35,301 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2018-04-11 20:14:35,302 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:14:35,303 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:14:35,308 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:14:35,308 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:35 [2018-04-11 20:14:35,740 WARN L148 SmtUtils]: Spent 317ms on a formula simplification that was a NOOP. DAG size: 34 [2018-04-11 20:14:36,117 WARN L148 SmtUtils]: Spent 314ms on a formula simplification that was a NOOP. DAG size: 34 [2018-04-11 20:14:36,137 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:14:36,156 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:14:36,157 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 47 [2018-04-11 20:14:36,157 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-04-11 20:14:36,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-04-11 20:14:36,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2102, Unknown=0, NotChecked=0, Total=2256 [2018-04-11 20:14:36,158 INFO L87 Difference]: Start difference. First operand 173 states and 183 transitions. Second operand 48 states. [2018-04-11 20:14:37,062 WARN L151 SmtUtils]: Spent 465ms on a formula simplification. DAG size of input: 39 DAG size of output 35 [2018-04-11 20:14:46,257 WARN L151 SmtUtils]: Spent 9138ms on a formula simplification. DAG size of input: 49 DAG size of output 41 [2018-04-11 20:14:55,397 WARN L151 SmtUtils]: Spent 9084ms on a formula simplification. DAG size of input: 69 DAG size of output 58 [2018-04-11 20:15:05,393 WARN L151 SmtUtils]: Spent 9931ms on a formula simplification. DAG size of input: 67 DAG size of output 60 [2018-04-11 20:15:09,840 WARN L151 SmtUtils]: Spent 4340ms on a formula simplification. DAG size of input: 54 DAG size of output 46 [2018-04-11 20:15:15,257 WARN L151 SmtUtils]: Spent 5359ms on a formula simplification. DAG size of input: 88 DAG size of output 70 [2018-04-11 20:15:29,136 WARN L151 SmtUtils]: Spent 8253ms on a formula simplification. DAG size of input: 90 DAG size of output 80 [2018-04-11 20:15:37,248 WARN L151 SmtUtils]: Spent 8064ms on a formula simplification. DAG size of input: 69 DAG size of output 66 [2018-04-11 20:15:40,337 WARN L151 SmtUtils]: Spent 3001ms on a formula simplification. DAG size of input: 76 DAG size of output 69 [2018-04-11 20:15:41,813 WARN L151 SmtUtils]: Spent 1373ms on a formula simplification. DAG size of input: 75 DAG size of output 64 [2018-04-11 20:15:54,022 WARN L151 SmtUtils]: Spent 8062ms on a formula simplification. DAG size of input: 68 DAG size of output 65 [2018-04-11 20:16:02,841 WARN L151 SmtUtils]: Spent 8763ms on a formula simplification. DAG size of input: 91 DAG size of output 79 [2018-04-11 20:16:20,559 WARN L151 SmtUtils]: Spent 13921ms on a formula simplification. DAG size of input: 80 DAG size of output 70 [2018-04-11 20:16:30,676 WARN L151 SmtUtils]: Spent 8053ms on a formula simplification. DAG size of input: 64 DAG size of output 63 [2018-04-11 20:16:31,934 WARN L151 SmtUtils]: Spent 1187ms on a formula simplification. DAG size of input: 74 DAG size of output 67 [2018-04-11 20:16:40,145 WARN L151 SmtUtils]: Spent 8066ms on a formula simplification. DAG size of input: 69 DAG size of output 68 [2018-04-11 20:16:50,546 WARN L151 SmtUtils]: Spent 8053ms on a formula simplification. DAG size of input: 66 DAG size of output 65 [2018-04-11 20:17:02,534 WARN L151 SmtUtils]: Spent 11928ms on a formula simplification. DAG size of input: 85 DAG size of output 75 [2018-04-11 20:17:05,945 WARN L151 SmtUtils]: Spent 110ms on a formula simplification. DAG size of input: 69 DAG size of output 54 [2018-04-11 20:17:06,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:17:06,075 INFO L93 Difference]: Finished difference Result 247 states and 259 transitions. [2018-04-11 20:17:06,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-04-11 20:17:06,075 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 74 [2018-04-11 20:17:06,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:17:06,076 INFO L225 Difference]: With dead ends: 247 [2018-04-11 20:17:06,076 INFO L226 Difference]: Without dead ends: 241 [2018-04-11 20:17:06,078 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1554 ImplicationChecksByTransitivity, 139.1s TimeCoverageRelationStatistics Valid=904, Invalid=7464, Unknown=4, NotChecked=0, Total=8372 [2018-04-11 20:17:06,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-04-11 20:17:06,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 213. [2018-04-11 20:17:06,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-04-11 20:17:06,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 224 transitions. [2018-04-11 20:17:06,088 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 224 transitions. Word has length 74 [2018-04-11 20:17:06,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:17:06,088 INFO L459 AbstractCegarLoop]: Abstraction has 213 states and 224 transitions. [2018-04-11 20:17:06,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-04-11 20:17:06,088 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 224 transitions. [2018-04-11 20:17:06,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-04-11 20:17:06,089 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:17:06,089 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:17:06,089 INFO L408 AbstractCegarLoop]: === Iteration 28 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:17:06,089 INFO L82 PathProgramCache]: Analyzing trace with hash -2123582662, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:17:06,099 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:17:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:17:06,122 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:17:06,125 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:17:06,125 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:06,129 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:06,129 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-11 20:17:06,139 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:17:06,140 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:17:06,140 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-11 20:17:06,141 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:06,146 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:17:06,146 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:06,150 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:06,150 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2018-04-11 20:17:06,164 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-04-11 20:17:06,165 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-04-11 20:17:06,165 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:06,166 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:06,169 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:06,169 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2018-04-11 20:17:06,259 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 24 [2018-04-11 20:17:06,261 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-04-11 20:17:06,261 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:06,265 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:06,269 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:06,269 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:19 [2018-04-11 20:17:06,336 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-04-11 20:17:06,341 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 14 [2018-04-11 20:17:06,342 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-11 20:17:06,344 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:17:06,349 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:17:06,350 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:29, output treesize:32 [2018-04-11 20:17:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:17:06,463 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:17:08,196 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2018-04-11 20:17:08,210 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-04-11 20:17:08,210 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:08,223 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-04-11 20:17:08,225 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2018-04-11 20:17:08,226 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:08,227 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:08,229 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2018-04-11 20:17:08,232 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2018-04-11 20:17:08,232 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:08,235 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:08,245 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-04-11 20:17:08,262 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-04-11 20:17:08,262 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:55, output treesize:84 [2018-04-11 20:17:08,439 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:17:08,459 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:17:08,459 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 40 [2018-04-11 20:17:08,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-04-11 20:17:08,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-04-11 20:17:08,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1519, Unknown=0, NotChecked=0, Total=1640 [2018-04-11 20:17:08,460 INFO L87 Difference]: Start difference. First operand 213 states and 224 transitions. Second operand 41 states. [2018-04-11 20:17:09,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:17:09,914 INFO L93 Difference]: Finished difference Result 283 states and 296 transitions. [2018-04-11 20:17:09,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-04-11 20:17:09,914 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 76 [2018-04-11 20:17:09,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:17:09,915 INFO L225 Difference]: With dead ends: 283 [2018-04-11 20:17:09,915 INFO L226 Difference]: Without dead ends: 282 [2018-04-11 20:17:09,916 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=549, Invalid=3741, Unknown=0, NotChecked=0, Total=4290 [2018-04-11 20:17:09,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-04-11 20:17:09,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 275. [2018-04-11 20:17:09,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-04-11 20:17:09,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 289 transitions. [2018-04-11 20:17:09,927 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 289 transitions. Word has length 76 [2018-04-11 20:17:09,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:17:09,927 INFO L459 AbstractCegarLoop]: Abstraction has 275 states and 289 transitions. [2018-04-11 20:17:09,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-04-11 20:17:09,927 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 289 transitions. [2018-04-11 20:17:09,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-04-11 20:17:09,928 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:17:09,928 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:17:09,928 INFO L408 AbstractCegarLoop]: === Iteration 29 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:17:09,928 INFO L82 PathProgramCache]: Analyzing trace with hash -325192180, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:17:09,936 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:17:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:17:09,959 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:17:09,963 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:17:09,964 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:09,970 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:17:09,971 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:09,975 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:09,975 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:16 [2018-04-11 20:17:09,989 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:17:09,991 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 17 [2018-04-11 20:17:09,991 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:09,999 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:17:09,999 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:17:10,000 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-11 20:17:10,000 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:10,004 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:10,005 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:17 [2018-04-11 20:17:10,557 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:17:10,557 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:17:11,579 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2018-04-11 20:17:11,580 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:11,585 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 15 [2018-04-11 20:17:11,594 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2018-04-11 20:17:11,594 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:11,594 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-04-11 20:17:11,594 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:11,596 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:11,600 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:11,601 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:27, output treesize:10 [2018-04-11 20:17:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:17:11,674 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:17:11,674 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 53 [2018-04-11 20:17:11,674 INFO L442 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-04-11 20:17:11,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-04-11 20:17:11,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2655, Unknown=0, NotChecked=0, Total=2862 [2018-04-11 20:17:11,675 INFO L87 Difference]: Start difference. First operand 275 states and 289 transitions. Second operand 54 states. [2018-04-11 20:17:21,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 20:17:21,087 INFO L93 Difference]: Finished difference Result 335 states and 351 transitions. [2018-04-11 20:17:21,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-04-11 20:17:21,087 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 78 [2018-04-11 20:17:21,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 20:17:21,088 INFO L225 Difference]: With dead ends: 335 [2018-04-11 20:17:21,089 INFO L226 Difference]: Without dead ends: 319 [2018-04-11 20:17:21,089 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2714 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1658, Invalid=11682, Unknown=0, NotChecked=0, Total=13340 [2018-04-11 20:17:21,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-04-11 20:17:21,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 307. [2018-04-11 20:17:21,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-04-11 20:17:21,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 321 transitions. [2018-04-11 20:17:21,102 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 321 transitions. Word has length 78 [2018-04-11 20:17:21,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 20:17:21,102 INFO L459 AbstractCegarLoop]: Abstraction has 307 states and 321 transitions. [2018-04-11 20:17:21,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-04-11 20:17:21,102 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 321 transitions. [2018-04-11 20:17:21,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-04-11 20:17:21,103 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 20:17:21,103 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 20:17:21,103 INFO L408 AbstractCegarLoop]: === Iteration 30 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr9RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr8RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-04-11 20:17:21,104 INFO L82 PathProgramCache]: Analyzing trace with hash -189865219, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 20:17:21,112 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 20:17:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 20:17:21,145 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 20:17:21,154 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:17:21,154 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:21,162 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 20:17:21,162 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:21,169 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:21,169 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:22 [2018-04-11 20:17:21,192 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:17:21,193 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:17:21,193 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 21 [2018-04-11 20:17:21,194 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:21,206 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:17:21,207 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:17:21,207 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-11 20:17:21,207 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:21,215 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:21,215 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:22 [2018-04-11 20:17:21,252 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2018-04-11 20:17:21,254 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-04-11 20:17:21,255 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:21,256 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:21,263 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:21,263 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2018-04-11 20:17:21,279 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:17:21,283 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 33 [2018-04-11 20:17:21,284 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-04-11 20:17:21,285 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:21,290 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:21,298 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-11 20:17:21,298 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:47, output treesize:43 [2018-04-11 20:17:21,697 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 20:17:21,698 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2018-04-11 20:17:21,704 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2018-04-11 20:17:21,704 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-11 20:17:21,711 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2018-04-11 20:17:21,711 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:21,714 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:17:21,729 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:17:21,729 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:58, output treesize:63 [2018-04-11 20:17:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:17:22,584 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 20:17:24,357 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2018-04-11 20:17:24,366 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2018-04-11 20:17:24,366 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:24,368 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:24,375 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:24,375 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:40, output treesize:54 [2018-04-11 20:17:24,770 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2018-04-11 20:17:24,770 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:24,786 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2018-04-11 20:17:24,803 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2018-04-11 20:17:24,803 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:24,808 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:24,823 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2018-04-11 20:17:24,824 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:24,838 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2018-04-11 20:17:24,855 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2018-04-11 20:17:24,855 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-04-11 20:17:24,860 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 20:17:24,873 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 20:17:24,873 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:80, output treesize:31 [2018-04-11 20:17:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 20:17:24,988 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 20:17:24,988 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 65 [2018-04-11 20:17:24,988 INFO L442 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-04-11 20:17:24,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-04-11 20:17:24,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=4064, Unknown=0, NotChecked=0, Total=4290 [2018-04-11 20:17:24,989 INFO L87 Difference]: Start difference. First operand 307 states and 321 transitions. Second operand 66 states. [2018-04-11 20:17:25,690 WARN L151 SmtUtils]: Spent 245ms on a formula simplification. DAG size of input: 98 DAG size of output 96 [2018-04-11 20:17:26,156 WARN L151 SmtUtils]: Spent 161ms on a formula simplification. DAG size of input: 96 DAG size of output 81 [2018-04-11 20:17:29,328 WARN L148 SmtUtils]: Spent 1733ms on a formula simplification that was a NOOP. DAG size: 75 [2018-04-11 20:17:29,524 WARN L148 SmtUtils]: Spent 103ms on a formula simplification that was a NOOP. DAG size: 87 [2018-04-11 20:17:30,124 WARN L148 SmtUtils]: Spent 106ms on a formula simplification that was a NOOP. DAG size: 86 [2018-04-11 20:17:30,615 WARN L151 SmtUtils]: Spent 233ms on a formula simplification. DAG size of input: 94 DAG size of output 90 [2018-04-11 20:17:30,902 WARN L151 SmtUtils]: Spent 111ms on a formula simplification. DAG size of input: 73 DAG size of output 68 [2018-04-11 20:17:31,238 WARN L151 SmtUtils]: Spent 228ms on a formula simplification. DAG size of input: 91 DAG size of output 87 [2018-04-11 20:17:33,759 WARN L151 SmtUtils]: Spent 2215ms on a formula simplification. DAG size of input: 100 DAG size of output 84 [2018-04-11 20:17:34,154 WARN L151 SmtUtils]: Spent 194ms on a formula simplification. DAG size of input: 77 DAG size of output 76 [2018-04-11 20:17:34,542 WARN L151 SmtUtils]: Spent 285ms on a formula simplification. DAG size of input: 124 DAG size of output 107 [2018-04-11 20:17:35,161 WARN L151 SmtUtils]: Spent 320ms on a formula simplification. DAG size of input: 115 DAG size of output 106 [2018-04-11 20:17:35,499 WARN L151 SmtUtils]: Spent 250ms on a formula simplification. DAG size of input: 90 DAG size of output 85 [2018-04-11 20:17:35,842 WARN L151 SmtUtils]: Spent 229ms on a formula simplification. DAG size of input: 96 DAG size of output 91 [2018-04-11 20:17:36,432 WARN L151 SmtUtils]: Spent 297ms on a formula simplification. DAG size of input: 96 DAG size of output 95 [2018-04-11 20:17:36,877 WARN L151 SmtUtils]: Spent 223ms on a formula simplification. DAG size of input: 88 DAG size of output 83 [2018-04-11 20:17:37,280 WARN L151 SmtUtils]: Spent 238ms on a formula simplification. DAG size of input: 93 DAG size of output 87 [2018-04-11 20:17:37,777 WARN L151 SmtUtils]: Spent 332ms on a formula simplification. DAG size of input: 106 DAG size of output 98 [2018-04-11 20:17:38,442 WARN L151 SmtUtils]: Spent 269ms on a formula simplification. DAG size of input: 103 DAG size of output 97 [2018-04-11 20:17:38,827 WARN L151 SmtUtils]: Spent 215ms on a formula simplification. DAG size of input: 84 DAG size of output 81 [2018-04-11 20:17:41,161 WARN L151 SmtUtils]: Spent 2201ms on a formula simplification. DAG size of input: 101 DAG size of output 93 [2018-04-11 20:17:41,676 WARN L151 SmtUtils]: Spent 251ms on a formula simplification. DAG size of input: 87 DAG size of output 83 [2018-04-11 20:17:42,050 WARN L151 SmtUtils]: Spent 228ms on a formula simplification. DAG size of input: 97 DAG size of output 90 [2018-04-11 20:17:42,477 WARN L151 SmtUtils]: Spent 239ms on a formula simplification. DAG size of input: 96 DAG size of output 92 [2018-04-11 20:17:42,978 WARN L148 SmtUtils]: Spent 110ms on a formula simplification that was a NOOP. DAG size: 83 [2018-04-11 20:17:43,500 WARN L151 SmtUtils]: Spent 210ms on a formula simplification. DAG size of input: 94 DAG size of output 87 [2018-04-11 20:17:43,827 WARN L151 SmtUtils]: Spent 100ms on a formula simplification. DAG size of input: 75 DAG size of output 71 [2018-04-11 20:17:44,109 WARN L151 SmtUtils]: Spent 199ms on a formula simplification. DAG size of input: 75 DAG size of output 73 [2018-04-11 20:17:44,337 WARN L151 SmtUtils]: Spent 104ms on a formula simplification. DAG size of input: 76 DAG size of output 72 [2018-04-11 20:17:44,599 WARN L151 SmtUtils]: Spent 180ms on a formula simplification. DAG size of input: 87 DAG size of output 80 [2018-04-11 20:17:45,103 WARN L151 SmtUtils]: Spent 364ms on a formula simplification. DAG size of input: 72 DAG size of output 68 [2018-04-11 20:17:45,365 WARN L151 SmtUtils]: Spent 161ms on a formula simplification. DAG size of input: 80 DAG size of output 77 [2018-04-11 20:17:45,680 WARN L151 SmtUtils]: Spent 231ms on a formula simplification. DAG size of input: 62 DAG size of output 61 [2018-04-11 20:17:47,935 WARN L148 SmtUtils]: Spent 2076ms on a formula simplification that was a NOOP. DAG size: 67 Received shutdown request... [2018-04-11 20:17:48,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-04-11 20:17:48,170 WARN L519 AbstractCegarLoop]: Verification canceled [2018-04-11 20:17:48,174 WARN L197 ceAbstractionStarter]: Timeout [2018-04-11 20:17:48,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.04 08:17:48 BoogieIcfgContainer [2018-04-11 20:17:48,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-11 20:17:48,175 INFO L168 Benchmark]: Toolchain (without parser) took 265475.58 ms. Allocated memory was 308.8 MB in the beginning and 554.2 MB in the end (delta: 245.4 MB). Free memory was 246.2 MB in the beginning and 313.6 MB in the end (delta: -67.5 MB). Peak memory consumption was 177.9 MB. Max. memory is 5.3 GB. [2018-04-11 20:17:48,176 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 308.8 MB. Free memory is still 271.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-11 20:17:48,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.91 ms. Allocated memory is still 308.8 MB. Free memory was 246.2 MB in the beginning and 222.2 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 5.3 GB. [2018-04-11 20:17:48,177 INFO L168 Benchmark]: Boogie Preprocessor took 59.94 ms. Allocated memory is still 308.8 MB. Free memory was 222.2 MB in the beginning and 219.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 5.3 GB. [2018-04-11 20:17:48,177 INFO L168 Benchmark]: RCFGBuilder took 546.22 ms. Allocated memory was 308.8 MB in the beginning and 471.9 MB in the end (delta: 163.1 MB). Free memory was 219.2 MB in the beginning and 403.3 MB in the end (delta: -184.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 5.3 GB. [2018-04-11 20:17:48,178 INFO L168 Benchmark]: TraceAbstraction took 264535.23 ms. Allocated memory was 471.9 MB in the beginning and 554.2 MB in the end (delta: 82.3 MB). Free memory was 403.3 MB in the beginning and 313.6 MB in the end (delta: 89.7 MB). Peak memory consumption was 172.0 MB. Max. memory is 5.3 GB. [2018-04-11 20:17:48,179 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 308.8 MB. Free memory is still 271.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 328.91 ms. Allocated memory is still 308.8 MB. Free memory was 246.2 MB in the beginning and 222.2 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 59.94 ms. Allocated memory is still 308.8 MB. Free memory was 222.2 MB in the beginning and 219.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 546.22 ms. Allocated memory was 308.8 MB in the beginning and 471.9 MB in the end (delta: 163.1 MB). Free memory was 219.2 MB in the beginning and 403.3 MB in the end (delta: -184.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 264535.23 ms. Allocated memory was 471.9 MB in the beginning and 554.2 MB in the end (delta: 82.3 MB). Free memory was 403.3 MB in the beginning and 313.6 MB in the end (delta: 89.7 MB). Peak memory consumption was 172.0 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 570]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 570). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 68 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 73. - TimeoutResultAtElement [Line: 569]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 569). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 68 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 73. - TimeoutResultAtElement [Line: 570]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 570). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 68 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 73. - TimeoutResultAtElement [Line: 553]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 553). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 68 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 73. - TimeoutResultAtElement [Line: 569]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 569). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 68 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 73. - TimeoutResultAtElement [Line: 549]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 549). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 68 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 73. - TimeoutResultAtElement [Line: 545]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 545). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 68 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 73. - TimeoutResultAtElement [Line: 543]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 543). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 68 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 73. - TimeoutResultAtElement [Line: 545]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 545). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 68 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 73. - TimeoutResultAtElement [Line: 550]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 550). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 68 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 73. - TimeoutResultAtElement [Line: 543]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 543). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 68 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 73. - TimeoutResultAtElement [Line: 545]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 545). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 68 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 73. - TimeoutResultAtElement [Line: 550]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 550). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 68 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 73. - TimeoutResultAtElement [Line: 549]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 549). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 68 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 73. - TimeoutResultAtElement [Line: 545]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 545). Cancelled while BasicCegarLoop was constructing difference of abstraction (307states) and interpolant automaton (currently 68 states, 66 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 73. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 106 locations, 15 error locations. TIMEOUT Result, 264.4s OverallTime, 30 OverallIterations, 4 TraceHistogramMax, 240.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2528 SDtfs, 8377 SDslu, 23467 SDs, 0 SdLazy, 16329 SolverSat, 911 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 33.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3553 GetRequests, 2467 SyntacticMatches, 31 SemanticMatches, 1054 ConstructedPredicates, 20 IntricatePredicates, 0 DeprecatedPredicates, 16079 ImplicationChecksByTransitivity, 222.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=307occurred in iteration=29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 29 MinimizatonAttempts, 988 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 21.7s InterpolantComputationTime, 1545 NumberOfCodeBlocks, 1545 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 3030 ConstructedInterpolants, 433 QuantifiedInterpolants, 2285111 SizeOfPredicates, 458 NumberOfNonLiveVariables, 4458 ConjunctsInSsa, 820 ConjunctsInUnsatCore, 60 InterpolantComputations, 36 PerfectInterpolantSequences, 26/378 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncat-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-11_20-17-48-188.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncat-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-11_20-17-48-188.csv Completed graceful shutdown