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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/email_spec9_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:13:24,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:13:24,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:13:24,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:13:24,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:13:24,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:13:24,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:13:24,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:13:24,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:13:24,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:13:24,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:13:24,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:13:24,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:13:24,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:13:24,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:13:24,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:13:24,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:13:24,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:13:24,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:13:24,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:13:24,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:13:24,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:13:24,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:13:24,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:13:24,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:13:24,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:13:24,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:13:24,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:13:24,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:13:24,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:13:24,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:13:24,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:13:24,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:13:24,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:13:24,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:13:24,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:13:24,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:13:24,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:13:24,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:13:24,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:13:24,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:13:24,976 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 [2019-10-13 23:13:24,991 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:13:24,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:13:24,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:13:24,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:13:24,993 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:13:24,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:13:24,993 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:13:24,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:13:24,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:13:24,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:13:24,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:13:24,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:13:24,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:13:24,995 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:13:24,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:13:24,995 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:13:24,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:13:24,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:13:24,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:13:24,996 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:13:24,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:13:24,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:13:24,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:13:24,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:13:24,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:13:24,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:13:24,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:13:24,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:13:24,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:13:25,330 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:13:25,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:13:25,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:13:25,349 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:13:25,349 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:13:25,350 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product21.cil.c [2019-10-13 23:13:25,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/847a0f499/d1ca12d3509e425fb82db5c6f94b99dc/FLAG4154e1b48 [2019-10-13 23:13:26,091 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:13:26,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product21.cil.c [2019-10-13 23:13:26,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/847a0f499/d1ca12d3509e425fb82db5c6f94b99dc/FLAG4154e1b48 [2019-10-13 23:13:26,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/847a0f499/d1ca12d3509e425fb82db5c6f94b99dc [2019-10-13 23:13:26,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:13:26,293 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:13:26,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:13:26,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:13:26,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:13:26,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:13:26" (1/1) ... [2019-10-13 23:13:26,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174a7eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:26, skipping insertion in model container [2019-10-13 23:13:26,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:13:26" (1/1) ... [2019-10-13 23:13:26,309 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:13:26,382 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:13:27,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:13:27,267 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:13:27,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:13:27,568 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:13:27,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:27 WrapperNode [2019-10-13 23:13:27,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:13:27,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:13:27,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:13:27,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:13:27,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:27" (1/1) ... [2019-10-13 23:13:27,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:27" (1/1) ... [2019-10-13 23:13:27,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:27" (1/1) ... [2019-10-13 23:13:27,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:27" (1/1) ... [2019-10-13 23:13:27,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:27" (1/1) ... [2019-10-13 23:13:27,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:27" (1/1) ... [2019-10-13 23:13:27,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:27" (1/1) ... [2019-10-13 23:13:27,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:13:27,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:13:27,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:13:27,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:13:27,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:27" (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 [2019-10-13 23:13:27,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:13:27,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:13:27,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:13:27,879 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 23:13:27,879 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 23:13:27,880 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 23:13:27,881 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 23:13:27,881 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 23:13:27,881 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-13 23:13:27,881 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 23:13:27,882 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 23:13:27,883 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 23:13:27,883 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 23:13:27,883 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 23:13:27,883 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 23:13:27,884 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 23:13:27,886 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 23:13:27,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 23:13:27,886 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 23:13:27,887 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 23:13:27,888 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 23:13:27,888 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 23:13:27,888 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 23:13:27,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 23:13:27,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 23:13:27,889 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 23:13:27,889 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 23:13:27,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:13:27,889 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:13:27,889 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:13:27,889 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:13:27,890 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:13:27,891 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 23:13:27,891 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 23:13:27,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 23:13:27,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 23:13:27,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 23:13:27,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 23:13:27,893 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 23:13:27,893 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 23:13:27,893 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 23:13:27,893 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 23:13:27,893 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 23:13:27,893 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 23:13:27,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 23:13:27,894 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 23:13:27,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 23:13:27,894 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 23:13:27,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 23:13:27,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 23:13:27,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 23:13:27,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 23:13:27,895 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 23:13:27,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 23:13:27,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 23:13:27,896 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 23:13:27,896 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 23:13:27,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 23:13:27,897 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 23:13:27,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 23:13:27,897 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 23:13:27,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 23:13:27,898 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 23:13:27,898 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 23:13:27,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 23:13:27,898 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 23:13:27,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 23:13:27,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 23:13:27,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 23:13:27,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 23:13:27,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 23:13:27,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 23:13:27,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 23:13:27,900 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 23:13:27,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 23:13:27,901 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 23:13:27,901 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 23:13:27,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 23:13:27,902 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 23:13:27,902 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 23:13:27,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 23:13:27,903 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 23:13:27,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 23:13:27,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 23:13:27,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 23:13:27,903 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:13:27,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 23:13:27,905 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 23:13:27,905 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 23:13:27,905 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 23:13:27,905 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 23:13:27,905 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 23:13:27,905 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 23:13:27,906 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 23:13:27,906 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:13:27,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:13:27,906 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 23:13:27,906 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 23:13:27,906 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 23:13:27,907 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 23:13:27,907 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 23:13:27,907 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 23:13:27,907 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 23:13:27,907 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 23:13:27,907 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 23:13:27,907 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 23:13:27,908 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 23:13:27,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:13:27,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:13:27,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:13:27,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:13:27,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:13:27,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:13:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:13:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:13:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:13:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 23:13:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 23:13:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 23:13:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 23:13:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 23:13:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 23:13:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 23:13:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 23:13:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 23:13:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 23:13:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 23:13:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 23:13:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 23:13:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 23:13:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 23:13:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 23:13:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 23:13:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 23:13:27,918 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 23:13:27,918 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 23:13:27,919 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 23:13:27,919 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 23:13:27,919 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 23:13:27,920 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 23:13:27,920 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 23:13:27,920 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 23:13:27,920 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 23:13:27,921 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 23:13:27,928 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 23:13:27,928 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 23:13:27,928 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 23:13:27,928 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 23:13:27,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 23:13:27,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:13:27,928 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 23:13:27,929 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 23:13:27,929 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-13 23:13:27,929 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 23:13:27,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 23:13:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 23:13:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 23:13:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 23:13:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 23:13:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 23:13:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 23:13:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:13:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:13:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:13:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:13:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:13:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 23:13:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 23:13:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 23:13:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 23:13:27,931 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 23:13:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 23:13:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 23:13:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 23:13:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 23:13:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 23:13:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 23:13:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 23:13:27,932 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 23:13:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 23:13:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 23:13:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 23:13:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 23:13:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 23:13:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 23:13:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 23:13:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 23:13:27,934 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 23:13:27,934 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 23:13:27,934 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 23:13:27,934 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 23:13:27,934 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 23:13:27,934 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 23:13:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 23:13:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 23:13:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 23:13:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 23:13:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 23:13:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 23:13:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 23:13:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 23:13:27,936 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 23:13:27,936 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 23:13:27,936 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 23:13:27,936 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 23:13:27,936 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 23:13:27,936 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 23:13:27,936 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 23:13:27,936 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 23:13:27,936 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 23:13:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:13:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 23:13:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 23:13:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 23:13:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 23:13:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:13:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:13:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 23:13:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 23:13:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 23:13:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 23:13:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 23:13:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:13:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:13:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:13:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:13:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:13:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:13:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:13:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:13:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:13:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:13:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:13:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:13:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:13:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:13:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:13:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:13:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:13:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:13:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:13:32,476 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:13:32,476 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 23:13:32,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:13:32 BoogieIcfgContainer [2019-10-13 23:13:32,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:13:32,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:13:32,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:13:32,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:13:32,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:13:26" (1/3) ... [2019-10-13 23:13:32,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbc1869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:13:32, skipping insertion in model container [2019-10-13 23:13:32,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:27" (2/3) ... [2019-10-13 23:13:32,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbc1869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:13:32, skipping insertion in model container [2019-10-13 23:13:32,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:13:32" (3/3) ... [2019-10-13 23:13:32,487 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product21.cil.c [2019-10-13 23:13:32,497 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:13:32,506 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:13:32,518 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:13:32,546 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:13:32,546 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:13:32,546 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:13:32,547 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:13:32,547 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:13:32,547 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:13:32,547 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:13:32,547 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:13:32,576 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states. [2019-10-13 23:13:32,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:13:32,592 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:32,594 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:32,596 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:32,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:32,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1695513081, now seen corresponding path program 1 times [2019-10-13 23:13:32,611 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:32,612 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819607976] [2019-10-13 23:13:32,612 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:32,612 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:32,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:13:33,275 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819607976] [2019-10-13 23:13:33,276 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:33,276 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:13:33,276 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138935627] [2019-10-13 23:13:33,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:13:33,282 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:33,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:13:33,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:13:33,299 INFO L87 Difference]: Start difference. First operand 396 states. Second operand 2 states. [2019-10-13 23:13:33,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:33,386 INFO L93 Difference]: Finished difference Result 574 states and 683 transitions. [2019-10-13 23:13:33,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:13:33,389 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 121 [2019-10-13 23:13:33,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:33,425 INFO L225 Difference]: With dead ends: 574 [2019-10-13 23:13:33,426 INFO L226 Difference]: Without dead ends: 369 [2019-10-13 23:13:33,438 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:13:33,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2019-10-13 23:13:33,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2019-10-13 23:13:33,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2019-10-13 23:13:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 436 transitions. [2019-10-13 23:13:33,563 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 436 transitions. Word has length 121 [2019-10-13 23:13:33,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:33,565 INFO L462 AbstractCegarLoop]: Abstraction has 369 states and 436 transitions. [2019-10-13 23:13:33,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:13:33,565 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 436 transitions. [2019-10-13 23:13:33,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 23:13:33,570 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:33,571 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:33,571 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:33,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:33,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1314460509, now seen corresponding path program 1 times [2019-10-13 23:13:33,572 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:33,572 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613439366] [2019-10-13 23:13:33,572 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:33,572 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:33,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:13:33,857 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613439366] [2019-10-13 23:13:33,857 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:33,857 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:33,858 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348875610] [2019-10-13 23:13:33,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:33,861 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:33,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:33,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:33,862 INFO L87 Difference]: Start difference. First operand 369 states and 436 transitions. Second operand 3 states. [2019-10-13 23:13:33,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:33,906 INFO L93 Difference]: Finished difference Result 559 states and 652 transitions. [2019-10-13 23:13:33,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:33,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2019-10-13 23:13:33,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:33,911 INFO L225 Difference]: With dead ends: 559 [2019-10-13 23:13:33,911 INFO L226 Difference]: Without dead ends: 371 [2019-10-13 23:13:33,913 INFO L600 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 [2019-10-13 23:13:33,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2019-10-13 23:13:33,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2019-10-13 23:13:33,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2019-10-13 23:13:33,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 438 transitions. [2019-10-13 23:13:33,957 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 438 transitions. Word has length 122 [2019-10-13 23:13:33,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:33,958 INFO L462 AbstractCegarLoop]: Abstraction has 371 states and 438 transitions. [2019-10-13 23:13:33,958 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:33,958 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 438 transitions. [2019-10-13 23:13:33,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-13 23:13:33,963 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:33,963 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:33,964 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:33,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:33,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1445351550, now seen corresponding path program 1 times [2019-10-13 23:13:33,965 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:33,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561696173] [2019-10-13 23:13:33,965 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:33,965 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:33,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:13:34,173 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561696173] [2019-10-13 23:13:34,173 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:34,173 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:34,174 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85433672] [2019-10-13 23:13:34,176 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:34,176 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:34,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:34,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:34,177 INFO L87 Difference]: Start difference. First operand 371 states and 438 transitions. Second operand 3 states. [2019-10-13 23:13:34,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:34,239 INFO L93 Difference]: Finished difference Result 726 states and 886 transitions. [2019-10-13 23:13:34,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:34,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2019-10-13 23:13:34,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:34,248 INFO L225 Difference]: With dead ends: 726 [2019-10-13 23:13:34,248 INFO L226 Difference]: Without dead ends: 413 [2019-10-13 23:13:34,250 INFO L600 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 [2019-10-13 23:13:34,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2019-10-13 23:13:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 412. [2019-10-13 23:13:34,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2019-10-13 23:13:34,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 509 transitions. [2019-10-13 23:13:34,298 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 509 transitions. Word has length 127 [2019-10-13 23:13:34,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:34,300 INFO L462 AbstractCegarLoop]: Abstraction has 412 states and 509 transitions. [2019-10-13 23:13:34,301 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:34,301 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 509 transitions. [2019-10-13 23:13:34,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-13 23:13:34,310 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:34,311 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:34,312 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:34,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:34,312 INFO L82 PathProgramCache]: Analyzing trace with hash -305888953, now seen corresponding path program 1 times [2019-10-13 23:13:34,312 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:34,313 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295004611] [2019-10-13 23:13:34,313 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:34,313 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:34,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:34,701 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:13:34,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295004611] [2019-10-13 23:13:34,702 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:34,702 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:34,703 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617307476] [2019-10-13 23:13:34,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:34,704 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:34,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:34,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:34,704 INFO L87 Difference]: Start difference. First operand 412 states and 509 transitions. Second operand 3 states. [2019-10-13 23:13:34,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:34,745 INFO L93 Difference]: Finished difference Result 652 states and 789 transitions. [2019-10-13 23:13:34,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:34,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2019-10-13 23:13:34,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:34,751 INFO L225 Difference]: With dead ends: 652 [2019-10-13 23:13:34,751 INFO L226 Difference]: Without dead ends: 476 [2019-10-13 23:13:34,752 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:34,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2019-10-13 23:13:34,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 475. [2019-10-13 23:13:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2019-10-13 23:13:34,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 582 transitions. [2019-10-13 23:13:34,787 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 582 transitions. Word has length 128 [2019-10-13 23:13:34,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:34,787 INFO L462 AbstractCegarLoop]: Abstraction has 475 states and 582 transitions. [2019-10-13 23:13:34,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:34,788 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 582 transitions. [2019-10-13 23:13:34,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-10-13 23:13:34,794 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:34,795 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:34,795 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:34,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:34,796 INFO L82 PathProgramCache]: Analyzing trace with hash 989295606, now seen corresponding path program 1 times [2019-10-13 23:13:34,796 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:34,796 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946450747] [2019-10-13 23:13:34,797 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:34,797 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:34,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:35,132 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946450747] [2019-10-13 23:13:35,132 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:35,132 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:13:35,132 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098178935] [2019-10-13 23:13:35,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:13:35,133 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:35,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:13:35,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:13:35,134 INFO L87 Difference]: Start difference. First operand 475 states and 582 transitions. Second operand 12 states. [2019-10-13 23:13:37,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:37,619 INFO L93 Difference]: Finished difference Result 1104 states and 1341 transitions. [2019-10-13 23:13:37,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:13:37,620 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 220 [2019-10-13 23:13:37,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:37,626 INFO L225 Difference]: With dead ends: 1104 [2019-10-13 23:13:37,626 INFO L226 Difference]: Without dead ends: 870 [2019-10-13 23:13:37,628 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2019-10-13 23:13:37,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2019-10-13 23:13:37,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 861. [2019-10-13 23:13:37,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2019-10-13 23:13:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1064 transitions. [2019-10-13 23:13:37,684 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1064 transitions. Word has length 220 [2019-10-13 23:13:37,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:37,684 INFO L462 AbstractCegarLoop]: Abstraction has 861 states and 1064 transitions. [2019-10-13 23:13:37,685 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:13:37,685 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1064 transitions. [2019-10-13 23:13:37,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-10-13 23:13:37,690 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:37,691 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:37,691 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:37,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:37,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1830361522, now seen corresponding path program 1 times [2019-10-13 23:13:37,692 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:37,692 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965221788] [2019-10-13 23:13:37,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:37,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:37,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:38,098 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2019-10-13 23:13:38,168 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 23:13:38,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965221788] [2019-10-13 23:13:38,169 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:38,170 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 23:13:38,170 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160928135] [2019-10-13 23:13:38,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 23:13:38,172 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:38,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 23:13:38,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:13:38,172 INFO L87 Difference]: Start difference. First operand 861 states and 1064 transitions. Second operand 11 states. [2019-10-13 23:13:41,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:41,771 INFO L93 Difference]: Finished difference Result 1528 states and 1828 transitions. [2019-10-13 23:13:41,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:13:41,772 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 222 [2019-10-13 23:13:41,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:41,779 INFO L225 Difference]: With dead ends: 1528 [2019-10-13 23:13:41,779 INFO L226 Difference]: Without dead ends: 1137 [2019-10-13 23:13:41,782 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:13:41,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2019-10-13 23:13:41,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1126. [2019-10-13 23:13:41,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1126 states. [2019-10-13 23:13:41,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1369 transitions. [2019-10-13 23:13:41,853 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1369 transitions. Word has length 222 [2019-10-13 23:13:41,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:41,854 INFO L462 AbstractCegarLoop]: Abstraction has 1126 states and 1369 transitions. [2019-10-13 23:13:41,854 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 23:13:41,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1369 transitions. [2019-10-13 23:13:41,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-10-13 23:13:41,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:41,861 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:41,861 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:41,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:41,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1144993830, now seen corresponding path program 1 times [2019-10-13 23:13:41,862 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:41,862 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879191414] [2019-10-13 23:13:41,862 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:41,863 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:41,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:42,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879191414] [2019-10-13 23:13:42,067 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:42,067 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:42,068 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586078054] [2019-10-13 23:13:42,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:42,069 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:42,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:42,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:42,070 INFO L87 Difference]: Start difference. First operand 1126 states and 1369 transitions. Second operand 3 states. [2019-10-13 23:13:42,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:42,188 INFO L93 Difference]: Finished difference Result 2358 states and 2959 transitions. [2019-10-13 23:13:42,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:42,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2019-10-13 23:13:42,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:42,198 INFO L225 Difference]: With dead ends: 2358 [2019-10-13 23:13:42,198 INFO L226 Difference]: Without dead ends: 1290 [2019-10-13 23:13:42,202 INFO L600 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 [2019-10-13 23:13:42,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2019-10-13 23:13:42,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1288. [2019-10-13 23:13:42,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2019-10-13 23:13:42,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1647 transitions. [2019-10-13 23:13:42,287 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1647 transitions. Word has length 242 [2019-10-13 23:13:42,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:42,288 INFO L462 AbstractCegarLoop]: Abstraction has 1288 states and 1647 transitions. [2019-10-13 23:13:42,288 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:42,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1647 transitions. [2019-10-13 23:13:42,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2019-10-13 23:13:42,294 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:42,295 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:42,295 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:42,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:42,295 INFO L82 PathProgramCache]: Analyzing trace with hash -2145677296, now seen corresponding path program 1 times [2019-10-13 23:13:42,296 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:42,296 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145878667] [2019-10-13 23:13:42,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:42,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:42,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:42,479 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-13 23:13:42,479 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145878667] [2019-10-13 23:13:42,479 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:42,479 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:42,480 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622753780] [2019-10-13 23:13:42,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:42,481 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:42,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:42,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:42,482 INFO L87 Difference]: Start difference. First operand 1288 states and 1647 transitions. Second operand 3 states. [2019-10-13 23:13:42,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:42,562 INFO L93 Difference]: Finished difference Result 2824 states and 3761 transitions. [2019-10-13 23:13:42,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:42,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 248 [2019-10-13 23:13:42,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:42,572 INFO L225 Difference]: With dead ends: 2824 [2019-10-13 23:13:42,572 INFO L226 Difference]: Without dead ends: 1594 [2019-10-13 23:13:42,577 INFO L600 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 [2019-10-13 23:13:42,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2019-10-13 23:13:42,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1592. [2019-10-13 23:13:42,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1592 states. [2019-10-13 23:13:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2167 transitions. [2019-10-13 23:13:42,667 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2167 transitions. Word has length 248 [2019-10-13 23:13:42,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:42,670 INFO L462 AbstractCegarLoop]: Abstraction has 1592 states and 2167 transitions. [2019-10-13 23:13:42,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:42,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2167 transitions. [2019-10-13 23:13:42,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-10-13 23:13:42,679 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:42,680 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:42,680 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:42,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:42,681 INFO L82 PathProgramCache]: Analyzing trace with hash 578287844, now seen corresponding path program 1 times [2019-10-13 23:13:42,681 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:42,681 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084996004] [2019-10-13 23:13:42,681 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:42,681 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:42,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:42,932 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084996004] [2019-10-13 23:13:42,933 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:42,933 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:42,933 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071542088] [2019-10-13 23:13:42,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:42,935 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:42,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:42,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:42,936 INFO L87 Difference]: Start difference. First operand 1592 states and 2167 transitions. Second operand 3 states. [2019-10-13 23:13:43,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:43,177 INFO L93 Difference]: Finished difference Result 3712 states and 5281 transitions. [2019-10-13 23:13:43,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:43,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 244 [2019-10-13 23:13:43,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:43,194 INFO L225 Difference]: With dead ends: 3712 [2019-10-13 23:13:43,195 INFO L226 Difference]: Without dead ends: 2178 [2019-10-13 23:13:43,200 INFO L600 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 [2019-10-13 23:13:43,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2178 states. [2019-10-13 23:13:43,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2178 to 2176. [2019-10-13 23:13:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2176 states. [2019-10-13 23:13:43,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 3159 transitions. [2019-10-13 23:13:43,330 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 3159 transitions. Word has length 244 [2019-10-13 23:13:43,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:43,331 INFO L462 AbstractCegarLoop]: Abstraction has 2176 states and 3159 transitions. [2019-10-13 23:13:43,331 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:43,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 3159 transitions. [2019-10-13 23:13:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-13 23:13:43,342 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:43,342 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:43,343 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:43,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:43,343 INFO L82 PathProgramCache]: Analyzing trace with hash -218137119, now seen corresponding path program 1 times [2019-10-13 23:13:43,343 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:43,344 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701631304] [2019-10-13 23:13:43,344 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:43,344 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:43,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:43,521 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701631304] [2019-10-13 23:13:43,521 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:43,522 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:43,522 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263187756] [2019-10-13 23:13:43,523 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:43,523 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:43,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:43,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:43,523 INFO L87 Difference]: Start difference. First operand 2176 states and 3159 transitions. Second operand 3 states. [2019-10-13 23:13:43,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:43,687 INFO L93 Difference]: Finished difference Result 5416 states and 8177 transitions. [2019-10-13 23:13:43,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:43,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 245 [2019-10-13 23:13:43,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:43,711 INFO L225 Difference]: With dead ends: 5416 [2019-10-13 23:13:43,711 INFO L226 Difference]: Without dead ends: 3298 [2019-10-13 23:13:43,721 INFO L600 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 [2019-10-13 23:13:43,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2019-10-13 23:13:43,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 3296. [2019-10-13 23:13:43,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3296 states. [2019-10-13 23:13:43,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3296 states to 3296 states and 5047 transitions. [2019-10-13 23:13:43,896 INFO L78 Accepts]: Start accepts. Automaton has 3296 states and 5047 transitions. Word has length 245 [2019-10-13 23:13:43,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:43,897 INFO L462 AbstractCegarLoop]: Abstraction has 3296 states and 5047 transitions. [2019-10-13 23:13:43,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:43,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3296 states and 5047 transitions. [2019-10-13 23:13:43,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2019-10-13 23:13:43,915 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:43,916 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:43,916 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:43,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:43,917 INFO L82 PathProgramCache]: Analyzing trace with hash -281901995, now seen corresponding path program 1 times [2019-10-13 23:13:43,917 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:43,917 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798638548] [2019-10-13 23:13:43,918 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:43,918 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:43,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-13 23:13:44,173 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798638548] [2019-10-13 23:13:44,173 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:44,174 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:44,174 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448312862] [2019-10-13 23:13:44,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:44,175 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:44,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:44,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:44,175 INFO L87 Difference]: Start difference. First operand 3296 states and 5047 transitions. Second operand 3 states. [2019-10-13 23:13:44,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:44,443 INFO L93 Difference]: Finished difference Result 8680 states and 13681 transitions. [2019-10-13 23:13:44,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:44,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2019-10-13 23:13:44,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:44,490 INFO L225 Difference]: With dead ends: 8680 [2019-10-13 23:13:44,490 INFO L226 Difference]: Without dead ends: 5442 [2019-10-13 23:13:44,506 INFO L600 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 [2019-10-13 23:13:44,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5442 states. [2019-10-13 23:13:44,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5442 to 5440. [2019-10-13 23:13:44,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5440 states. [2019-10-13 23:13:44,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5440 states to 5440 states and 8631 transitions. [2019-10-13 23:13:44,816 INFO L78 Accepts]: Start accepts. Automaton has 5440 states and 8631 transitions. Word has length 251 [2019-10-13 23:13:44,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:44,817 INFO L462 AbstractCegarLoop]: Abstraction has 5440 states and 8631 transitions. [2019-10-13 23:13:44,817 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:44,817 INFO L276 IsEmpty]: Start isEmpty. Operand 5440 states and 8631 transitions. [2019-10-13 23:13:44,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-10-13 23:13:44,851 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:44,851 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:44,852 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:44,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:44,852 INFO L82 PathProgramCache]: Analyzing trace with hash 103615457, now seen corresponding path program 1 times [2019-10-13 23:13:44,853 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:44,853 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819571839] [2019-10-13 23:13:44,853 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:44,854 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:44,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:45,043 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:45,044 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819571839] [2019-10-13 23:13:45,044 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:45,045 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:45,045 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473811270] [2019-10-13 23:13:45,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:45,046 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:45,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:45,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:45,047 INFO L87 Difference]: Start difference. First operand 5440 states and 8631 transitions. Second operand 3 states. [2019-10-13 23:13:45,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:45,598 INFO L93 Difference]: Finished difference Result 14920 states and 24113 transitions. [2019-10-13 23:13:45,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:45,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 247 [2019-10-13 23:13:45,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:45,686 INFO L225 Difference]: With dead ends: 14920 [2019-10-13 23:13:45,686 INFO L226 Difference]: Without dead ends: 9538 [2019-10-13 23:13:45,709 INFO L600 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 [2019-10-13 23:13:45,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9538 states. [2019-10-13 23:13:46,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9538 to 9536. [2019-10-13 23:13:46,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9536 states. [2019-10-13 23:13:46,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9536 states to 9536 states and 15415 transitions. [2019-10-13 23:13:46,221 INFO L78 Accepts]: Start accepts. Automaton has 9536 states and 15415 transitions. Word has length 247 [2019-10-13 23:13:46,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:46,223 INFO L462 AbstractCegarLoop]: Abstraction has 9536 states and 15415 transitions. [2019-10-13 23:13:46,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:46,223 INFO L276 IsEmpty]: Start isEmpty. Operand 9536 states and 15415 transitions. [2019-10-13 23:13:46,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2019-10-13 23:13:46,281 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:46,281 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:46,281 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:46,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:46,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1629168412, now seen corresponding path program 1 times [2019-10-13 23:13:46,282 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:46,282 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967653778] [2019-10-13 23:13:46,283 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:46,283 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:46,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-13 23:13:47,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967653778] [2019-10-13 23:13:47,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571917195] [2019-10-13 23:13:47,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:13:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:47,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 3450 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:13:47,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:13:47,880 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 23:13:47,880 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:13:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:48,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1992790047] [2019-10-13 23:13:48,363 INFO L162 IcfgInterpreter]: Started Sifa with 199 locations of interest [2019-10-13 23:13:48,363 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:13:48,379 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:13:48,389 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:13:48,389 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs