/usr/bin/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:50:16,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:50:16,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:50:16,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:50:16,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:50:16,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:50:16,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:50:16,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:50:16,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:50:16,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:50:16,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:50:16,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:50:16,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:50:16,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:50:16,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:50:16,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:50:16,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:50:16,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:50:16,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:50:16,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:50:16,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:50:16,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:50:16,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:50:16,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:50:16,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:50:16,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:50:16,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:50:16,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:50:16,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:50:16,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:50:16,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:50:16,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:50:16,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:50:16,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:50:16,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:50:16,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:50:16,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:50:16,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:50:16,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:50:16,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:50:16,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:50:16,920 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 [2019-11-07 00:50:16,952 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:50:16,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:50:16,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:50:16,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:50:16,956 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:50:16,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:50:16,960 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:50:16,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:50:16,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:50:16,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:50:16,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:50:16,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:50:16,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:50:16,961 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:50:16,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:50:16,961 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:50:16,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:50:16,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:50:16,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:50:16,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:50:16,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:50:16,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:50:16,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:50:16,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:50:16,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:50:16,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:50:16,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:50:16,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:50:16,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:50:17,265 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:50:17,278 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:50:17,282 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:50:17,284 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:50:17,284 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:50:17,285 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product35.cil.c [2019-11-07 00:50:17,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f613747e/165865eac104469c9f6f835e33b1083b/FLAGf72bd400d [2019-11-07 00:50:18,013 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:50:18,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product35.cil.c [2019-11-07 00:50:18,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f613747e/165865eac104469c9f6f835e33b1083b/FLAGf72bd400d [2019-11-07 00:50:18,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f613747e/165865eac104469c9f6f835e33b1083b [2019-11-07 00:50:18,257 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:50:18,259 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:50:18,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:50:18,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:50:18,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:50:18,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:50:18" (1/1) ... [2019-11-07 00:50:18,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d58a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:18, skipping insertion in model container [2019-11-07 00:50:18,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:50:18" (1/1) ... [2019-11-07 00:50:18,280 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:50:18,364 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:50:19,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:50:19,122 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:50:19,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:50:19,443 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:50:19,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:19 WrapperNode [2019-11-07 00:50:19,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:50:19,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:50:19,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:50:19,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:50:19,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:19" (1/1) ... [2019-11-07 00:50:19,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:19" (1/1) ... [2019-11-07 00:50:19,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:19" (1/1) ... [2019-11-07 00:50:19,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:19" (1/1) ... [2019-11-07 00:50:19,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:19" (1/1) ... [2019-11-07 00:50:19,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:19" (1/1) ... [2019-11-07 00:50:19,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:19" (1/1) ... [2019-11-07 00:50:19,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:50:19,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:50:19,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:50:19,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:50:19,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:19" (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 [2019-11-07 00:50:19,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:50:19,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:50:19,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:50:19,744 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:50:19,744 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 00:50:19,745 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:50:19,745 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:50:19,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:50:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:50:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:50:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:50:19,747 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:50:19,747 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:50:19,748 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:50:19,748 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:50:19,748 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:50:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:50:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:50:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:50:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:50:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:50:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:50:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:50:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:50:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:50:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:50:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:50:19,754 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:50:19,754 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:50:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:50:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:50:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:50:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:50:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:50:19,756 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:50:19,756 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:50:19,756 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:50:19,756 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:50:19,756 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:50:19,756 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:50:19,757 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:50:19,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:50:19,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:50:19,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:50:19,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:50:19,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:50:19,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:50:19,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:50:19,758 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:50:19,758 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:50:19,758 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:50:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:50:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:50:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:50:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:50:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:50:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:50:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:50:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:50:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:50:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:50:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:50:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:50:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:50:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:50:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:50:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:50:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:50:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:50:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:50:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:50:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:50:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:50:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:50:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:50:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:50:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 00:50:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:50:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:50:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:50:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:50:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:50:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:50:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:50:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:50:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:50:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:50:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:50:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:50:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:50:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:50:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:50:19,769 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:50:19,769 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:50:19,769 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:50:19,769 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:50:19,769 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:50:19,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-11-07 00:50:19,770 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:50:19,770 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:50:19,770 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:50:19,770 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:50:19,770 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:50:19,770 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:50:19,771 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:50:19,771 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:50:19,771 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:50:19,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:50:19,771 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:50:19,771 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:50:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:50:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:50:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:50:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:50:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:50:19,773 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:50:19,773 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:50:19,774 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:50:19,774 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:50:19,774 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:50:19,775 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:50:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:50:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:50:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:50:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:50:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:50:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:50:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:50:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:50:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:50:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:50:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:50:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:50:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:50:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:50:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:50:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:50:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:50:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:50:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:50:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 00:50:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:50:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:50:19,789 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:50:19,795 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:50:19,795 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:50:19,795 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:50:19,796 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:50:19,796 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:50:19,796 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:50:19,796 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:50:19,796 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:50:19,796 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:50:19,797 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:50:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:50:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:50:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:50:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:50:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:50:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:50:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:50:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:50:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:50:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:50:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:50:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:50:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:50:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:50:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:50:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:50:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:50:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:50:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:50:19,801 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:50:19,801 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:50:19,801 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:50:19,801 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:50:19,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:50:19,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:50:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:50:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:50:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:50:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:50:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:50:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:50:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:50:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:50:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:50:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:50:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:50:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:50:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:50:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:50:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:50:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:50:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:50:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:50:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:50:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:50:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:50:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:50:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:50:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:50:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:50:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:50:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:50:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:50:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:50:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:50:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:50:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:50:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:50:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:50:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:50:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:50:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:50:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:50:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:50:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:50:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:50:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:50:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:50:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:50:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:50:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:50:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 00:50:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-11-07 00:50:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:50:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:50:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:50:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:50:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:50:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:50:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:50:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:50:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:50:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:50:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:50:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:50:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:50:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:50:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:50:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:50:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:50:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:50:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:50:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:50:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:50:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:50:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:50:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:50:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:50:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:50:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:50:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:50:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:50:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:50:22,016 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:50:22,016 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:50:22,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:50:22 BoogieIcfgContainer [2019-11-07 00:50:22,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:50:22,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:50:22,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:50:22,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:50:22,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:50:18" (1/3) ... [2019-11-07 00:50:22,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbe62f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:50:22, skipping insertion in model container [2019-11-07 00:50:22,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:19" (2/3) ... [2019-11-07 00:50:22,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbe62f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:50:22, skipping insertion in model container [2019-11-07 00:50:22,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:50:22" (3/3) ... [2019-11-07 00:50:22,030 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product35.cil.c [2019-11-07 00:50:22,040 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:50:22,051 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:50:22,065 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:50:22,107 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:50:22,107 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:50:22,107 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:50:22,107 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:50:22,108 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:50:22,108 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:50:22,108 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:50:22,109 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:50:22,149 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states. [2019-11-07 00:50:22,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-11-07 00:50:22,175 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:22,176 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:22,178 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:22,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:22,184 INFO L82 PathProgramCache]: Analyzing trace with hash 6494718, now seen corresponding path program 1 times [2019-11-07 00:50:22,192 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:22,193 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391504462] [2019-11-07 00:50:22,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:50:22,924 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391504462] [2019-11-07 00:50:22,925 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:50:22,925 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:50:22,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225109497] [2019-11-07 00:50:22,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:50:22,933 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:22,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:50:22,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:50:22,949 INFO L87 Difference]: Start difference. First operand 685 states. Second operand 2 states. [2019-11-07 00:50:23,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:23,073 INFO L93 Difference]: Finished difference Result 1045 states and 1413 transitions. [2019-11-07 00:50:23,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:50:23,075 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 222 [2019-11-07 00:50:23,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:23,114 INFO L225 Difference]: With dead ends: 1045 [2019-11-07 00:50:23,114 INFO L226 Difference]: Without dead ends: 656 [2019-11-07 00:50:23,123 INFO L630 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 [2019-11-07 00:50:23,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2019-11-07 00:50:23,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 656. [2019-11-07 00:50:23,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2019-11-07 00:50:23,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 889 transitions. [2019-11-07 00:50:23,224 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 889 transitions. Word has length 222 [2019-11-07 00:50:23,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:23,226 INFO L462 AbstractCegarLoop]: Abstraction has 656 states and 889 transitions. [2019-11-07 00:50:23,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:50:23,227 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 889 transitions. [2019-11-07 00:50:23,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2019-11-07 00:50:23,234 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:23,235 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:23,235 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:23,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:23,236 INFO L82 PathProgramCache]: Analyzing trace with hash -599466214, now seen corresponding path program 1 times [2019-11-07 00:50:23,236 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:23,236 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989309525] [2019-11-07 00:50:23,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:23,524 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:50:23,524 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989309525] [2019-11-07 00:50:23,525 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:50:23,525 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:50:23,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931950594] [2019-11-07 00:50:23,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:50:23,528 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:23,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:50:23,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:50:23,529 INFO L87 Difference]: Start difference. First operand 656 states and 889 transitions. Second operand 3 states. [2019-11-07 00:50:23,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:23,583 INFO L93 Difference]: Finished difference Result 1028 states and 1372 transitions. [2019-11-07 00:50:23,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:50:23,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2019-11-07 00:50:23,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:23,590 INFO L225 Difference]: With dead ends: 1028 [2019-11-07 00:50:23,590 INFO L226 Difference]: Without dead ends: 659 [2019-11-07 00:50:23,593 INFO L630 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 [2019-11-07 00:50:23,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-11-07 00:50:23,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 658. [2019-11-07 00:50:23,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2019-11-07 00:50:23,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 891 transitions. [2019-11-07 00:50:23,630 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 891 transitions. Word has length 223 [2019-11-07 00:50:23,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:23,631 INFO L462 AbstractCegarLoop]: Abstraction has 658 states and 891 transitions. [2019-11-07 00:50:23,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:50:23,631 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 891 transitions. [2019-11-07 00:50:23,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-11-07 00:50:23,637 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:23,637 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:23,637 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:23,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:23,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1876117259, now seen corresponding path program 1 times [2019-11-07 00:50:23,638 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:23,638 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551638904] [2019-11-07 00:50:23,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:23,912 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:50:23,913 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551638904] [2019-11-07 00:50:23,913 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:50:23,913 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:50:23,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874086565] [2019-11-07 00:50:23,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:50:23,918 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:23,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:50:23,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:50:23,919 INFO L87 Difference]: Start difference. First operand 658 states and 891 transitions. Second operand 3 states. [2019-11-07 00:50:24,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:24,003 INFO L93 Difference]: Finished difference Result 1296 states and 1786 transitions. [2019-11-07 00:50:24,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:50:24,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2019-11-07 00:50:24,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:24,015 INFO L225 Difference]: With dead ends: 1296 [2019-11-07 00:50:24,015 INFO L226 Difference]: Without dead ends: 703 [2019-11-07 00:50:24,019 INFO L630 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 [2019-11-07 00:50:24,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2019-11-07 00:50:24,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 702. [2019-11-07 00:50:24,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2019-11-07 00:50:24,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 966 transitions. [2019-11-07 00:50:24,082 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 966 transitions. Word has length 235 [2019-11-07 00:50:24,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:24,083 INFO L462 AbstractCegarLoop]: Abstraction has 702 states and 966 transitions. [2019-11-07 00:50:24,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:50:24,089 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 966 transitions. [2019-11-07 00:50:24,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-11-07 00:50:24,100 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:24,101 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:24,101 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:24,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:24,102 INFO L82 PathProgramCache]: Analyzing trace with hash 55549419, now seen corresponding path program 1 times [2019-11-07 00:50:24,103 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:24,103 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636812076] [2019-11-07 00:50:24,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:50:24,508 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636812076] [2019-11-07 00:50:24,508 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:50:24,508 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:50:24,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452859521] [2019-11-07 00:50:24,509 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:50:24,509 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:24,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:50:24,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:50:24,510 INFO L87 Difference]: Start difference. First operand 702 states and 966 transitions. Second operand 3 states. [2019-11-07 00:50:24,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:24,574 INFO L93 Difference]: Finished difference Result 1425 states and 2006 transitions. [2019-11-07 00:50:24,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:50:24,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2019-11-07 00:50:24,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:24,585 INFO L225 Difference]: With dead ends: 1425 [2019-11-07 00:50:24,585 INFO L226 Difference]: Without dead ends: 788 [2019-11-07 00:50:24,589 INFO L630 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 [2019-11-07 00:50:24,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2019-11-07 00:50:24,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 787. [2019-11-07 00:50:24,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 787 states. [2019-11-07 00:50:24,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1110 transitions. [2019-11-07 00:50:24,632 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1110 transitions. Word has length 236 [2019-11-07 00:50:24,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:24,633 INFO L462 AbstractCegarLoop]: Abstraction has 787 states and 1110 transitions. [2019-11-07 00:50:24,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:50:24,633 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1110 transitions. [2019-11-07 00:50:24,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-11-07 00:50:24,639 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:24,640 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:24,640 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:24,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:24,641 INFO L82 PathProgramCache]: Analyzing trace with hash 339589291, now seen corresponding path program 1 times [2019-11-07 00:50:24,641 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:24,641 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547479774] [2019-11-07 00:50:24,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:50:24,956 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547479774] [2019-11-07 00:50:24,957 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:50:24,957 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:50:24,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755838268] [2019-11-07 00:50:24,959 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:50:24,959 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:24,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:50:24,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:50:24,960 INFO L87 Difference]: Start difference. First operand 787 states and 1110 transitions. Second operand 3 states. [2019-11-07 00:50:25,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:25,006 INFO L93 Difference]: Finished difference Result 1674 states and 2428 transitions. [2019-11-07 00:50:25,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:50:25,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2019-11-07 00:50:25,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:25,017 INFO L225 Difference]: With dead ends: 1674 [2019-11-07 00:50:25,017 INFO L226 Difference]: Without dead ends: 952 [2019-11-07 00:50:25,020 INFO L630 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 [2019-11-07 00:50:25,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2019-11-07 00:50:25,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 951. [2019-11-07 00:50:25,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2019-11-07 00:50:25,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1386 transitions. [2019-11-07 00:50:25,068 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1386 transitions. Word has length 237 [2019-11-07 00:50:25,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:25,068 INFO L462 AbstractCegarLoop]: Abstraction has 951 states and 1386 transitions. [2019-11-07 00:50:25,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:50:25,069 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1386 transitions. [2019-11-07 00:50:25,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-11-07 00:50:25,075 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:25,076 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:25,076 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:25,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:25,076 INFO L82 PathProgramCache]: Analyzing trace with hash -2008576442, now seen corresponding path program 1 times [2019-11-07 00:50:25,077 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:25,077 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749513871] [2019-11-07 00:50:25,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:25,683 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:50:25,683 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749513871] [2019-11-07 00:50:25,684 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678190484] [2019-11-07 00:50:25,684 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 [2019-11-07 00:50:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:26,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 3286 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:50:26,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:26,842 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:50:26,843 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:27,263 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:50:27,435 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-11-07 00:50:27,483 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:27,600 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:27,781 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:50:27,781 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-11-07 00:50:27,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943311783] [2019-11-07 00:50:27,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:50:27,783 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:27,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:50:27,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:50:27,785 INFO L87 Difference]: Start difference. First operand 951 states and 1386 transitions. Second operand 9 states. [2019-11-07 00:50:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:30,012 INFO L93 Difference]: Finished difference Result 1880 states and 2752 transitions. [2019-11-07 00:50:30,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:50:30,012 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 239 [2019-11-07 00:50:30,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:30,020 INFO L225 Difference]: With dead ends: 1880 [2019-11-07 00:50:30,021 INFO L226 Difference]: Without dead ends: 965 [2019-11-07 00:50:30,026 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 467 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:50:30,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2019-11-07 00:50:30,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 965. [2019-11-07 00:50:30,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2019-11-07 00:50:30,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1404 transitions. [2019-11-07 00:50:30,087 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1404 transitions. Word has length 239 [2019-11-07 00:50:30,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:30,088 INFO L462 AbstractCegarLoop]: Abstraction has 965 states and 1404 transitions. [2019-11-07 00:50:30,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:50:30,088 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1404 transitions. [2019-11-07 00:50:30,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2019-11-07 00:50:30,098 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:30,098 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:30,309 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:30,309 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:30,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:30,310 INFO L82 PathProgramCache]: Analyzing trace with hash 525978830, now seen corresponding path program 1 times [2019-11-07 00:50:30,310 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:30,310 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385511855] [2019-11-07 00:50:30,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:30,715 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:50:30,715 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385511855] [2019-11-07 00:50:30,716 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118676254] [2019-11-07 00:50:30,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:31,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 3287 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:50:31,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:31,569 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:50:31,569 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:31,944 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:32,016 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:32,137 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:50:32,138 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-11-07 00:50:32,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342283550] [2019-11-07 00:50:32,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:50:32,140 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:32,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:50:32,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:50:32,141 INFO L87 Difference]: Start difference. First operand 965 states and 1404 transitions. Second operand 7 states. [2019-11-07 00:50:33,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:33,405 INFO L93 Difference]: Finished difference Result 1881 states and 2758 transitions. [2019-11-07 00:50:33,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:50:33,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2019-11-07 00:50:33,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:33,412 INFO L225 Difference]: With dead ends: 1881 [2019-11-07 00:50:33,412 INFO L226 Difference]: Without dead ends: 967 [2019-11-07 00:50:33,416 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 474 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-11-07 00:50:33,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2019-11-07 00:50:33,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 967. [2019-11-07 00:50:33,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2019-11-07 00:50:33,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1407 transitions. [2019-11-07 00:50:33,456 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1407 transitions. Word has length 240 [2019-11-07 00:50:33,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:33,457 INFO L462 AbstractCegarLoop]: Abstraction has 967 states and 1407 transitions. [2019-11-07 00:50:33,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:50:33,457 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1407 transitions. [2019-11-07 00:50:33,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-11-07 00:50:33,463 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:33,463 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:33,679 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:33,679 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:33,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:33,679 INFO L82 PathProgramCache]: Analyzing trace with hash 274750856, now seen corresponding path program 1 times [2019-11-07 00:50:33,680 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:33,680 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489607893] [2019-11-07 00:50:33,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:50:34,146 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489607893] [2019-11-07 00:50:34,147 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295373285] [2019-11-07 00:50:34,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:34,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 3288 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:50:34,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:35,054 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:50:35,054 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:35,378 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:50:35,460 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:35,549 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:35,725 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:35,726 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-11-07 00:50:35,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729745667] [2019-11-07 00:50:35,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:50:35,727 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:35,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:50:35,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 00:50:35,728 INFO L87 Difference]: Start difference. First operand 967 states and 1407 transitions. Second operand 16 states. [2019-11-07 00:50:38,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:38,028 INFO L93 Difference]: Finished difference Result 1885 states and 2756 transitions. [2019-11-07 00:50:38,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:50:38,029 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 241 [2019-11-07 00:50:38,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:38,036 INFO L225 Difference]: With dead ends: 1885 [2019-11-07 00:50:38,036 INFO L226 Difference]: Without dead ends: 979 [2019-11-07 00:50:38,040 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 471 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 00:50:38,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2019-11-07 00:50:38,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 977. [2019-11-07 00:50:38,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2019-11-07 00:50:38,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1418 transitions. [2019-11-07 00:50:38,078 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1418 transitions. Word has length 241 [2019-11-07 00:50:38,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:38,079 INFO L462 AbstractCegarLoop]: Abstraction has 977 states and 1418 transitions. [2019-11-07 00:50:38,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:50:38,079 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1418 transitions. [2019-11-07 00:50:38,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-11-07 00:50:38,085 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:38,085 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:38,292 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:38,293 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:38,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:38,294 INFO L82 PathProgramCache]: Analyzing trace with hash -632261288, now seen corresponding path program 2 times [2019-11-07 00:50:38,295 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:38,295 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576354935] [2019-11-07 00:50:38,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:38,675 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576354935] [2019-11-07 00:50:38,675 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8111101] [2019-11-07 00:50:38,675 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:39,484 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:50:39,485 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:50:39,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 2559 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:50:39,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:50:39,782 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:50:40,283 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:40,283 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-11-07 00:50:40,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435770550] [2019-11-07 00:50:40,285 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:50:40,285 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:40,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:50:40,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:50:40,286 INFO L87 Difference]: Start difference. First operand 977 states and 1418 transitions. Second operand 14 states. [2019-11-07 00:50:43,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:43,722 INFO L93 Difference]: Finished difference Result 3219 states and 4712 transitions. [2019-11-07 00:50:43,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:50:43,723 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 242 [2019-11-07 00:50:43,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:43,745 INFO L225 Difference]: With dead ends: 3219 [2019-11-07 00:50:43,745 INFO L226 Difference]: Without dead ends: 2863 [2019-11-07 00:50:43,749 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 482 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-11-07 00:50:43,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2019-11-07 00:50:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2459. [2019-11-07 00:50:43,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2459 states. [2019-11-07 00:50:43,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 3699 transitions. [2019-11-07 00:50:43,901 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 3699 transitions. Word has length 242 [2019-11-07 00:50:43,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:43,904 INFO L462 AbstractCegarLoop]: Abstraction has 2459 states and 3699 transitions. [2019-11-07 00:50:43,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:50:43,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 3699 transitions. [2019-11-07 00:50:43,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2019-11-07 00:50:43,917 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:43,918 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:44,125 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:44,125 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:44,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:44,126 INFO L82 PathProgramCache]: Analyzing trace with hash -484956370, now seen corresponding path program 1 times [2019-11-07 00:50:44,126 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:44,126 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008835613] [2019-11-07 00:50:44,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:44,454 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008835613] [2019-11-07 00:50:44,454 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050565757] [2019-11-07 00:50:44,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:45,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 3290 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:50:45,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:50:45,421 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:45,748 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:50:45,824 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:45,909 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:46,120 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:46,121 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-11-07 00:50:46,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023609217] [2019-11-07 00:50:46,122 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:50:46,122 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:46,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:50:46,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:50:46,122 INFO L87 Difference]: Start difference. First operand 2459 states and 3699 transitions. Second operand 15 states. [2019-11-07 00:50:49,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:49,099 INFO L93 Difference]: Finished difference Result 4812 states and 7274 transitions. [2019-11-07 00:50:49,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:50:49,100 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 243 [2019-11-07 00:50:49,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:49,115 INFO L225 Difference]: With dead ends: 4812 [2019-11-07 00:50:49,115 INFO L226 Difference]: Without dead ends: 2465 [2019-11-07 00:50:49,125 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 475 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:50:49,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2019-11-07 00:50:49,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2459. [2019-11-07 00:50:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2459 states. [2019-11-07 00:50:49,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 3697 transitions. [2019-11-07 00:50:49,241 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 3697 transitions. Word has length 243 [2019-11-07 00:50:49,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:49,242 INFO L462 AbstractCegarLoop]: Abstraction has 2459 states and 3697 transitions. [2019-11-07 00:50:49,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:50:49,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 3697 transitions. [2019-11-07 00:50:49,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-11-07 00:50:49,256 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:49,256 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:49,457 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:49,457 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:49,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:49,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1269171289, now seen corresponding path program 1 times [2019-11-07 00:50:49,458 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:49,458 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586711192] [2019-11-07 00:50:49,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:49,907 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586711192] [2019-11-07 00:50:49,907 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943899450] [2019-11-07 00:50:49,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:50,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:50:50,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:50:50,706 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:50,978 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:51,027 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:51,094 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:50:51,094 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:51,094 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-11-07 00:50:51,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314279418] [2019-11-07 00:50:51,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:50:51,095 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:51,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:50:51,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:50:51,096 INFO L87 Difference]: Start difference. First operand 2459 states and 3697 transitions. Second operand 12 states.