java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/dll2n_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 10:53:48,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 10:53:48,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 10:53:48,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 10:53:48,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 10:53:48,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 10:53:48,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 10:53:48,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 10:53:48,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 10:53:48,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 10:53:48,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 10:53:48,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 10:53:48,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 10:53:48,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 10:53:48,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 10:53:48,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 10:53:48,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 10:53:48,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 10:53:48,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 10:53:48,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 10:53:48,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 10:53:48,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 10:53:48,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 10:53:48,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 10:53:48,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 10:53:48,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 10:53:48,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 10:53:48,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 10:53:48,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 10:53:48,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 10:53:48,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 10:53:48,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 10:53:48,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 10:53:48,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 10:53:48,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 10:53:48,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 10:53:48,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 10:53:48,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 10:53:48,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 10:53:48,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 10:53:48,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 10:53:48,987 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-02 10:53:49,007 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 10:53:49,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 10:53:49,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 10:53:49,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 10:53:49,011 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 10:53:49,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 10:53:49,012 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 10:53:49,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 10:53:49,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 10:53:49,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 10:53:49,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 10:53:49,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 10:53:49,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 10:53:49,014 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 10:53:49,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 10:53:49,015 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 10:53:49,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 10:53:49,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 10:53:49,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 10:53:49,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 10:53:49,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 10:53:49,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 10:53:49,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 10:53:49,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 10:53:49,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 10:53:49,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 10:53:49,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 10:53:49,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 10:53:49,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 10:53:49,054 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 10:53:49,067 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 10:53:49,070 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 10:53:49,072 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 10:53:49,072 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 10:53:49,073 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_append_equal.i [2019-10-02 10:53:49,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d85952ddd/8542a66e0c2f41e2a8aaa64f1857b6cd/FLAG61e435cf9 [2019-10-02 10:53:49,675 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 10:53:49,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_append_equal.i [2019-10-02 10:53:49,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d85952ddd/8542a66e0c2f41e2a8aaa64f1857b6cd/FLAG61e435cf9 [2019-10-02 10:53:49,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d85952ddd/8542a66e0c2f41e2a8aaa64f1857b6cd [2019-10-02 10:53:49,928 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 10:53:49,930 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 10:53:49,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 10:53:49,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 10:53:49,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 10:53:49,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:53:49" (1/1) ... [2019-10-02 10:53:49,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec6a472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:53:49, skipping insertion in model container [2019-10-02 10:53:49,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:53:49" (1/1) ... [2019-10-02 10:53:49,947 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 10:53:49,992 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 10:53:50,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 10:53:50,426 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 10:53:50,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 10:53:50,544 INFO L192 MainTranslator]: Completed translation [2019-10-02 10:53:50,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:53:50 WrapperNode [2019-10-02 10:53:50,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 10:53:50,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 10:53:50,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 10:53:50,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 10:53:50,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:53:50" (1/1) ... [2019-10-02 10:53:50,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:53:50" (1/1) ... [2019-10-02 10:53:50,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:53:50" (1/1) ... [2019-10-02 10:53:50,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:53:50" (1/1) ... [2019-10-02 10:53:50,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:53:50" (1/1) ... [2019-10-02 10:53:50,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:53:50" (1/1) ... [2019-10-02 10:53:50,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:53:50" (1/1) ... [2019-10-02 10:53:50,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 10:53:50,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 10:53:50,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 10:53:50,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 10:53:50,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:53:50" (1/1) ... No working directory specified, using /storage/repos/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 [2019-10-02 10:53:50,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 10:53:50,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 10:53:50,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-02 10:53:50,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-02 10:53:50,697 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-02 10:53:50,697 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-02 10:53:50,697 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-10-02 10:53:50,698 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2019-10-02 10:53:50,698 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_append [2019-10-02 10:53:50,698 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 10:53:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 10:53:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-02 10:53:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-02 10:53:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-02 10:53:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-02 10:53:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-02 10:53:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-02 10:53:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-02 10:53:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-02 10:53:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-02 10:53:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-02 10:53:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-02 10:53:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-02 10:53:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-02 10:53:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-02 10:53:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-02 10:53:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-02 10:53:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-02 10:53:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-02 10:53:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-02 10:53:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-02 10:53:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-02 10:53:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-02 10:53:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-02 10:53:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-02 10:53:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-02 10:53:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-02 10:53:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-02 10:53:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-02 10:53:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-02 10:53:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-02 10:53:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-02 10:53:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-02 10:53:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-02 10:53:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-02 10:53:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-02 10:53:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-02 10:53:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-02 10:53:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-02 10:53:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-02 10:53:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-02 10:53:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-02 10:53:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-02 10:53:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-02 10:53:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-02 10:53:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-02 10:53:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-02 10:53:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-02 10:53:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-02 10:53:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-02 10:53:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-02 10:53:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-02 10:53:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-02 10:53:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 10:53:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-02 10:53:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-02 10:53:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-02 10:53:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-02 10:53:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-02 10:53:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-02 10:53:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-02 10:53:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-02 10:53:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-02 10:53:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-02 10:53:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-02 10:53:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-02 10:53:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 10:53:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-02 10:53:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-02 10:53:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-02 10:53:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-02 10:53:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-02 10:53:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-02 10:53:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-02 10:53:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-02 10:53:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-02 10:53:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-02 10:53:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-02 10:53:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-02 10:53:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-02 10:53:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-02 10:53:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-02 10:53:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-02 10:53:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-02 10:53:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-02 10:53:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-02 10:53:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-02 10:53:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-02 10:53:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-02 10:53:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-02 10:53:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-02 10:53:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-02 10:53:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-02 10:53:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-02 10:53:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-02 10:53:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-02 10:53:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-02 10:53:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-02 10:53:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-02 10:53:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-02 10:53:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-02 10:53:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-02 10:53:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-02 10:53:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-02 10:53:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-02 10:53:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-02 10:53:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-02 10:53:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-02 10:53:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 10:53:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-02 10:53:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 10:53:50,716 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-10-02 10:53:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2019-10-02 10:53:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-02 10:53:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 10:53:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure dll_append [2019-10-02 10:53:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 10:53:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 10:53:50,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-02 10:53:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 10:53:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 10:53:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 10:53:51,128 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-02 10:53:51,318 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 10:53:51,319 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-02 10:53:51,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:53:51 BoogieIcfgContainer [2019-10-02 10:53:51,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 10:53:51,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 10:53:51,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 10:53:51,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 10:53:51,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 10:53:49" (1/3) ... [2019-10-02 10:53:51,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104f00e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:53:51, skipping insertion in model container [2019-10-02 10:53:51,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:53:50" (2/3) ... [2019-10-02 10:53:51,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104f00e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:53:51, skipping insertion in model container [2019-10-02 10:53:51,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:53:51" (3/3) ... [2019-10-02 10:53:51,329 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_append_equal.i [2019-10-02 10:53:51,340 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 10:53:51,351 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 10:53:51,392 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 10:53:51,442 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 10:53:51,443 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 10:53:51,444 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 10:53:51,444 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 10:53:51,459 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 10:53:51,460 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 10:53:51,460 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 10:53:51,460 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 10:53:51,460 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 10:53:51,500 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2019-10-02 10:53:51,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-02 10:53:51,508 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:53:51,509 INFO L411 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] [2019-10-02 10:53:51,511 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:53:51,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:53:51,517 INFO L82 PathProgramCache]: Analyzing trace with hash -683309345, now seen corresponding path program 1 times [2019-10-02 10:53:51,519 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:53:51,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:53:51,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:53:51,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:53:51,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:53:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:53:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 10:53:51,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 10:53:51,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-02 10:53:51,977 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 10:53:51,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 10:53:51,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-02 10:53:51,995 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 10 states. [2019-10-02 10:53:52,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:53:52,276 INFO L93 Difference]: Finished difference Result 100 states and 133 transitions. [2019-10-02 10:53:52,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-02 10:53:52,278 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2019-10-02 10:53:52,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:53:52,288 INFO L225 Difference]: With dead ends: 100 [2019-10-02 10:53:52,288 INFO L226 Difference]: Without dead ends: 50 [2019-10-02 10:53:52,292 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-10-02 10:53:52,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-02 10:53:52,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2019-10-02 10:53:52,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-02 10:53:52,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2019-10-02 10:53:52,337 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 29 [2019-10-02 10:53:52,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:53:52,340 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2019-10-02 10:53:52,340 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-02 10:53:52,340 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2019-10-02 10:53:52,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-02 10:53:52,342 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:53:52,342 INFO L411 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] [2019-10-02 10:53:52,343 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:53:52,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:53:52,343 INFO L82 PathProgramCache]: Analyzing trace with hash -683307671, now seen corresponding path program 1 times [2019-10-02 10:53:52,344 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:53:52,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:53:52,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:53:52,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:53:52,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:53:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:53:52,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 10:53:52,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 10:53:52,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 10:53:52,479 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 10:53:52,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 10:53:52,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 10:53:52,482 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 5 states. [2019-10-02 10:53:52,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:53:52,527 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2019-10-02 10:53:52,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 10:53:52,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-10-02 10:53:52,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:53:52,529 INFO L225 Difference]: With dead ends: 76 [2019-10-02 10:53:52,529 INFO L226 Difference]: Without dead ends: 47 [2019-10-02 10:53:52,530 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 10:53:52,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-02 10:53:52,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2019-10-02 10:53:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-02 10:53:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2019-10-02 10:53:52,540 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 29 [2019-10-02 10:53:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:53:52,540 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2019-10-02 10:53:52,540 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 10:53:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2019-10-02 10:53:52,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-02 10:53:52,542 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:53:52,542 INFO L411 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] [2019-10-02 10:53:52,543 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:53:52,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:53:52,543 INFO L82 PathProgramCache]: Analyzing trace with hash 197721565, now seen corresponding path program 1 times [2019-10-02 10:53:52,543 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:53:52,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:53:52,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:53:52,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:53:52,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:53:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:53:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-02 10:53:52,610 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 10:53:52,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 10:53:52,611 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 10:53:52,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 10:53:52,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 10:53:52,612 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 3 states. [2019-10-02 10:53:52,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:53:52,637 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2019-10-02 10:53:52,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 10:53:52,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-10-02 10:53:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:53:52,639 INFO L225 Difference]: With dead ends: 81 [2019-10-02 10:53:52,639 INFO L226 Difference]: Without dead ends: 47 [2019-10-02 10:53:52,640 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 10:53:52,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-02 10:53:52,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2019-10-02 10:53:52,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-02 10:53:52,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2019-10-02 10:53:52,657 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 39 [2019-10-02 10:53:52,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:53:52,657 INFO L475 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2019-10-02 10:53:52,657 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 10:53:52,658 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2019-10-02 10:53:52,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-02 10:53:52,660 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:53:52,660 INFO L411 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] [2019-10-02 10:53:52,660 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:53:52,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:53:52,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1607716769, now seen corresponding path program 1 times [2019-10-02 10:53:52,661 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:53:52,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:53:52,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:53:52,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:53:52,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:53:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:53:52,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-02 10:53:52,810 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 10:53:52,810 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 10:53:52,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:53:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:53:52,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-02 10:53:52,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 10:53:52,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 10:53:53,003 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 10:53:53,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-10-02 10:53:53,004 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 10:53:53,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 10:53:53,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-02 10:53:53,005 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 6 states. [2019-10-02 10:53:53,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:53:53,069 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2019-10-02 10:53:53,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 10:53:53,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-10-02 10:53:53,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:53:53,072 INFO L225 Difference]: With dead ends: 81 [2019-10-02 10:53:53,072 INFO L226 Difference]: Without dead ends: 52 [2019-10-02 10:53:53,073 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-02 10:53:53,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-10-02 10:53:53,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2019-10-02 10:53:53,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-02 10:53:53,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2019-10-02 10:53:53,082 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 39 [2019-10-02 10:53:53,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:53:53,083 INFO L475 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2019-10-02 10:53:53,083 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 10:53:53,083 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2019-10-02 10:53:53,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-02 10:53:53,091 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:53:53,091 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-02 10:53:53,094 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:53:53,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:53:53,095 INFO L82 PathProgramCache]: Analyzing trace with hash 974185811, now seen corresponding path program 1 times [2019-10-02 10:53:53,095 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:53:53,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:53:53,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:53:53,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:53:53,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:53:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:53:53,436 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-02 10:53:53,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 10:53:53,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-02 10:53:53,438 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-02 10:53:53,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-02 10:53:53,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-02 10:53:53,439 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 12 states. [2019-10-02 10:53:53,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:53:53,983 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2019-10-02 10:53:53,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-02 10:53:53,984 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2019-10-02 10:53:53,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:53:53,986 INFO L225 Difference]: With dead ends: 56 [2019-10-02 10:53:53,988 INFO L226 Difference]: Without dead ends: 54 [2019-10-02 10:53:53,989 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2019-10-02 10:53:53,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-02 10:53:54,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2019-10-02 10:53:54,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-10-02 10:53:54,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2019-10-02 10:53:54,007 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 49 [2019-10-02 10:53:54,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:53:54,008 INFO L475 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2019-10-02 10:53:54,008 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-02 10:53:54,008 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2019-10-02 10:53:54,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-02 10:53:54,011 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:53:54,011 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-02 10:53:54,011 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:53:54,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:53:54,012 INFO L82 PathProgramCache]: Analyzing trace with hash -110261276, now seen corresponding path program 1 times [2019-10-02 10:53:54,012 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:53:54,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:53:54,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:53:54,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:53:54,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:53:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:53:54,454 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-02 10:53:54,455 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 10:53:54,455 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 10:53:54,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:53:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:53:54,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 39 conjunts are in the unsatisfiable core [2019-10-02 10:53:54,625 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 10:53:54,768 INFO L375 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 8 treesize of output 4 [2019-10-02 10:53:54,769 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 10:53:54,779 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-02 10:53:54,780 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 10:53:54,781 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-10-02 10:53:56,832 WARN L860 $PredicateComparison]: unable to prove that (exists ((node_create_~temp~0.offset Int) (node_create_~temp~0.base Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base (store (store (store (select |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base) (+ node_create_~temp~0.offset 4) 0) (+ node_create_~temp~0.offset 8) 0) node_create_~temp~0.offset (select (select |c_#memory_$Pointer$.base| node_create_~temp~0.base) node_create_~temp~0.offset)))) (<= (+ |c_#StackHeapBarrier| 1) node_create_~temp~0.base))) is different from true