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_spec8_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:18:12,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:18:12,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:18:12,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:18:12,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:18:12,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:18:12,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:18:12,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:18:12,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:18:12,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:18:12,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:18:12,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:18:12,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:18:12,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:18:12,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:18:12,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:18:12,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:18:12,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:18:12,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:18:12,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:18:12,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:18:12,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:18:12,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:18:12,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:18:12,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:18:12,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:18:12,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:18:12,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:18:12,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:18:12,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:18:12,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:18:12,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:18:12,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:18:12,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:18:12,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:18:12,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:18:12,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:18:12,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:18:12,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:18:12,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:18:12,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:18:12,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:18:12,608 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:18:12,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:18:12,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:18:12,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:18:12,612 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:18:12,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:18:12,613 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:18:12,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:18:12,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:18:12,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:18:12,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:18:12,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:18:12,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:18:12,616 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:18:12,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:18:12,616 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:18:12,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:18:12,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:18:12,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:18:12,617 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:18:12,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:18:12,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:12,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:18:12,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:18:12,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:18:12,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:18:12,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:18:12,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:18:12,620 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 [2019-10-13 21:18:12,915 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:18:12,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:18:12,930 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:18:12,932 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:18:12,932 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:18:12,933 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product20.cil.c [2019-10-13 21:18:13,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e7e8b770/de36f185d0694f05ae2fded6ba7e8741/FLAG2e14f6333 [2019-10-13 21:18:13,648 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:18:13,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product20.cil.c [2019-10-13 21:18:13,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e7e8b770/de36f185d0694f05ae2fded6ba7e8741/FLAG2e14f6333 [2019-10-13 21:18:13,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e7e8b770/de36f185d0694f05ae2fded6ba7e8741 [2019-10-13 21:18:13,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:18:13,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:18:13,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:13,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:18:13,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:18:13,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:13" (1/1) ... [2019-10-13 21:18:13,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ce804d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:13, skipping insertion in model container [2019-10-13 21:18:13,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:13" (1/1) ... [2019-10-13 21:18:13,842 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:18:13,919 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:18:14,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:14,783 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:18:14,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:15,013 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:18:15,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:15 WrapperNode [2019-10-13 21:18:15,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:15,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:18:15,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:18:15,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:18:15,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:15" (1/1) ... [2019-10-13 21:18:15,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:15" (1/1) ... [2019-10-13 21:18:15,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:15" (1/1) ... [2019-10-13 21:18:15,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:15" (1/1) ... [2019-10-13 21:18:15,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:15" (1/1) ... [2019-10-13 21:18:15,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:15" (1/1) ... [2019-10-13 21:18:15,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:15" (1/1) ... [2019-10-13 21:18:15,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:18:15,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:18:15,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:18:15,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:18:15,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:18:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:18:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:15,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:15,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:18:15,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:18:15,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:18:15,298 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:18:15,298 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:18:15,298 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:18:15,298 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:18:15,299 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:18:15,300 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:18:15,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:18:15,302 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:18:15,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:18:15,303 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:18:15,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:18:15,303 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:18:15,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:18:15,304 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:18:15,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:18:15,304 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:18:15,304 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:18:15,304 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:18:15,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:18:15,305 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:18:15,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:18:15,305 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:18:15,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:18:15,305 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:18:15,306 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:18:15,306 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:18:15,306 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:18:15,307 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:18:15,307 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:18:15,307 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:18:15,307 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:18:15,308 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:18:15,308 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:18:15,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:18:15,308 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:18:15,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:18:15,308 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:18:15,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:18:15,309 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:18:15,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:18:15,309 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:18:15,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:18:15,310 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:18:15,310 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:18:15,310 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:18:15,310 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:18:15,310 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:18:15,310 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:18:15,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:18:15,311 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:18:15,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:18:15,311 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:18:15,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:15,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:15,312 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:18:15,312 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:18:15,313 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:18:15,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:18:15,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:18:15,313 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:18:15,313 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:18:15,313 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:18:15,313 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:18:15,314 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:15,314 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:18:15,315 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:15,315 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:18:15,315 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:18:15,315 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:18:15,315 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:18:15,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:18:15,316 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:18:15,316 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:18:15,316 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:18:15,317 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:18:15,317 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:18:15,318 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:18:15,318 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:18:15,319 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:18:15,319 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:18:15,319 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:18:15,319 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:18:15,319 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:18:15,319 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:18:15,320 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:18:15,320 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:18:15,320 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:18:15,320 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:18:15,320 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-13 21:18:15,320 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:18:15,320 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:18:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:18:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:18:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:18:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:18:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:18:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:18:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:18:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:18:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:18:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:18:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:18:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:18:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:18:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:18:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:18:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:18:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:18:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:18:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:18:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:18:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:18:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:18:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:18:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:15,327 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:15,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:18:15,327 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:18:15,327 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:18:15,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:18:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:18:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:18:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:18:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:18:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:18:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:18:15,332 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:18:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:18:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:18:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:18:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:18:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:18:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:18:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:18:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:18:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:18:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:18:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:18:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:18:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:18:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:18:15,344 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:18:15,344 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:18:15,344 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:18:15,344 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:18:15,344 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:18:15,344 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:18:15,344 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:18:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:18:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:18:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:18:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:18:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:18:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:18:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:18:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:18:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:18:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:18:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:18:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:18:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:18:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:18:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:18:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:18:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:18:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:18:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:18:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:18:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:18:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:18:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:18:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:18:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:18:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:18:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:18:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:15,349 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:18:15,349 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:18:15,349 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:18:15,349 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:18:15,349 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:18:15,349 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:18:15,349 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:18:15,349 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:18:15,350 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:18:15,350 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:18:15,350 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:18:15,350 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:18:15,350 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:18:15,350 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:18:15,350 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:18:15,350 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:18:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:18:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:18:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:18:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:18:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:18:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:18:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:18:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:18:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:18:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:18:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:18:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:18:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:18:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:18:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:18:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:18:15,353 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:18:15,353 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:18:15,353 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:18:15,353 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:15,353 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:15,353 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:18:15,353 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:18:15,354 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:18:15,354 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:18:15,354 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:18:15,354 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:18:15,354 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:18:15,354 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:18:15,354 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:18:15,354 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:18:15,355 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:18:15,355 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-13 21:18:15,355 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:18:15,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:18:15,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:18:15,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:18:17,425 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:18:17,425 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:18:17,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:17 BoogieIcfgContainer [2019-10-13 21:18:17,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:18:17,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:18:17,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:18:17,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:18:17,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:18:13" (1/3) ... [2019-10-13 21:18:17,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3125867a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:17, skipping insertion in model container [2019-10-13 21:18:17,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:15" (2/3) ... [2019-10-13 21:18:17,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3125867a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:17, skipping insertion in model container [2019-10-13 21:18:17,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:17" (3/3) ... [2019-10-13 21:18:17,436 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product20.cil.c [2019-10-13 21:18:17,446 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:18:17,456 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:18:17,469 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:18:17,520 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:18:17,520 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:18:17,521 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:18:17,521 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:18:17,521 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:18:17,521 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:18:17,522 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:18:17,527 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:18:17,574 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states. [2019-10-13 21:18:17,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 21:18:17,614 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:17,616 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:18:17,620 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:17,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:17,628 INFO L82 PathProgramCache]: Analyzing trace with hash -26401555, now seen corresponding path program 1 times [2019-10-13 21:18:17,643 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:17,643 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173763224] [2019-10-13 21:18:17,644 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:17,644 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:17,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:18,311 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173763224] [2019-10-13 21:18:18,313 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:18,313 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:18:18,313 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580526503] [2019-10-13 21:18:18,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:18:18,322 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:18,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:18:18,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:18,340 INFO L87 Difference]: Start difference. First operand 563 states. Second operand 2 states. [2019-10-13 21:18:18,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:18,425 INFO L93 Difference]: Finished difference Result 764 states and 1044 transitions. [2019-10-13 21:18:18,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:18:18,427 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 154 [2019-10-13 21:18:18,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:18,462 INFO L225 Difference]: With dead ends: 764 [2019-10-13 21:18:18,462 INFO L226 Difference]: Without dead ends: 510 [2019-10-13 21:18:18,473 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:18,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2019-10-13 21:18:18,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2019-10-13 21:18:18,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2019-10-13 21:18:18,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 701 transitions. [2019-10-13 21:18:18,603 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 701 transitions. Word has length 154 [2019-10-13 21:18:18,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:18,606 INFO L462 AbstractCegarLoop]: Abstraction has 510 states and 701 transitions. [2019-10-13 21:18:18,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:18:18,606 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 701 transitions. [2019-10-13 21:18:18,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 21:18:18,612 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:18,613 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:18:18,613 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:18,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:18,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1452305840, now seen corresponding path program 1 times [2019-10-13 21:18:18,614 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:18,614 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811528407] [2019-10-13 21:18:18,617 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:18,618 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:18,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:18,872 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:18,872 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811528407] [2019-10-13 21:18:18,873 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:18,873 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:18,873 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720264752] [2019-10-13 21:18:18,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:18,879 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:18,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:18,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:18,879 INFO L87 Difference]: Start difference. First operand 510 states and 701 transitions. Second operand 3 states. [2019-10-13 21:18:18,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:18,973 INFO L93 Difference]: Finished difference Result 747 states and 1010 transitions. [2019-10-13 21:18:18,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:18,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-10-13 21:18:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:18,982 INFO L225 Difference]: With dead ends: 747 [2019-10-13 21:18:18,983 INFO L226 Difference]: Without dead ends: 513 [2019-10-13 21:18:18,986 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:18,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2019-10-13 21:18:19,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 512. [2019-10-13 21:18:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2019-10-13 21:18:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 703 transitions. [2019-10-13 21:18:19,041 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 703 transitions. Word has length 155 [2019-10-13 21:18:19,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:19,042 INFO L462 AbstractCegarLoop]: Abstraction has 512 states and 703 transitions. [2019-10-13 21:18:19,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:19,042 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 703 transitions. [2019-10-13 21:18:19,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 21:18:19,049 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:19,050 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:18:19,050 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:19,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:19,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1395553248, now seen corresponding path program 1 times [2019-10-13 21:18:19,051 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:19,051 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070407197] [2019-10-13 21:18:19,051 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:19,051 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:19,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:19,318 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070407197] [2019-10-13 21:18:19,318 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:19,318 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:19,318 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403816664] [2019-10-13 21:18:19,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:19,319 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:19,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:19,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:19,320 INFO L87 Difference]: Start difference. First operand 512 states and 703 transitions. Second operand 3 states. [2019-10-13 21:18:19,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:19,355 INFO L93 Difference]: Finished difference Result 1002 states and 1407 transitions. [2019-10-13 21:18:19,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:19,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-10-13 21:18:19,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:19,360 INFO L225 Difference]: With dead ends: 1002 [2019-10-13 21:18:19,360 INFO L226 Difference]: Without dead ends: 555 [2019-10-13 21:18:19,362 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:19,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2019-10-13 21:18:19,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 554. [2019-10-13 21:18:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-10-13 21:18:19,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 775 transitions. [2019-10-13 21:18:19,386 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 775 transitions. Word has length 165 [2019-10-13 21:18:19,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:19,386 INFO L462 AbstractCegarLoop]: Abstraction has 554 states and 775 transitions. [2019-10-13 21:18:19,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:19,386 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 775 transitions. [2019-10-13 21:18:19,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:18:19,390 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:19,391 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:18:19,391 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:19,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:19,391 INFO L82 PathProgramCache]: Analyzing trace with hash 742155615, now seen corresponding path program 1 times [2019-10-13 21:18:19,391 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:19,392 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016485911] [2019-10-13 21:18:19,392 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:19,392 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:19,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:19,554 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016485911] [2019-10-13 21:18:19,554 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:19,554 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:19,555 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559711321] [2019-10-13 21:18:19,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:19,555 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:19,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:19,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:19,556 INFO L87 Difference]: Start difference. First operand 554 states and 775 transitions. Second operand 3 states. [2019-10-13 21:18:19,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:19,598 INFO L93 Difference]: Finished difference Result 1125 states and 1618 transitions. [2019-10-13 21:18:19,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:19,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2019-10-13 21:18:19,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:19,605 INFO L225 Difference]: With dead ends: 1125 [2019-10-13 21:18:19,605 INFO L226 Difference]: Without dead ends: 636 [2019-10-13 21:18:19,608 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:19,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2019-10-13 21:18:19,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 635. [2019-10-13 21:18:19,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-10-13 21:18:19,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 913 transitions. [2019-10-13 21:18:19,642 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 913 transitions. Word has length 166 [2019-10-13 21:18:19,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:19,642 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 913 transitions. [2019-10-13 21:18:19,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:19,643 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 913 transitions. [2019-10-13 21:18:19,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-13 21:18:19,649 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:19,649 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:18:19,650 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:19,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:19,650 INFO L82 PathProgramCache]: Analyzing trace with hash -158203488, now seen corresponding path program 1 times [2019-10-13 21:18:19,651 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:19,651 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658047787] [2019-10-13 21:18:19,651 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:19,652 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:19,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:19,983 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:19,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658047787] [2019-10-13 21:18:19,984 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:19,984 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:19,985 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731352206] [2019-10-13 21:18:19,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:19,985 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:19,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:19,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:19,986 INFO L87 Difference]: Start difference. First operand 635 states and 913 transitions. Second operand 3 states. [2019-10-13 21:18:20,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:20,027 INFO L93 Difference]: Finished difference Result 1362 states and 2022 transitions. [2019-10-13 21:18:20,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:20,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2019-10-13 21:18:20,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:20,035 INFO L225 Difference]: With dead ends: 1362 [2019-10-13 21:18:20,035 INFO L226 Difference]: Without dead ends: 792 [2019-10-13 21:18:20,037 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:20,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2019-10-13 21:18:20,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 791. [2019-10-13 21:18:20,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2019-10-13 21:18:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1177 transitions. [2019-10-13 21:18:20,083 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1177 transitions. Word has length 167 [2019-10-13 21:18:20,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:20,084 INFO L462 AbstractCegarLoop]: Abstraction has 791 states and 1177 transitions. [2019-10-13 21:18:20,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:20,084 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1177 transitions. [2019-10-13 21:18:20,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-13 21:18:20,089 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:20,089 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:18:20,089 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:20,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:20,090 INFO L82 PathProgramCache]: Analyzing trace with hash 937061343, now seen corresponding path program 1 times [2019-10-13 21:18:20,090 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:20,090 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004442738] [2019-10-13 21:18:20,090 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:20,091 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:20,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:20,242 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004442738] [2019-10-13 21:18:20,243 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:20,243 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:20,243 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265840455] [2019-10-13 21:18:20,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:20,244 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:20,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:20,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:20,244 INFO L87 Difference]: Start difference. First operand 791 states and 1177 transitions. Second operand 3 states. [2019-10-13 21:18:20,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:20,298 INFO L93 Difference]: Finished difference Result 1818 states and 2794 transitions. [2019-10-13 21:18:20,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:20,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-10-13 21:18:20,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:20,308 INFO L225 Difference]: With dead ends: 1818 [2019-10-13 21:18:20,308 INFO L226 Difference]: Without dead ends: 1092 [2019-10-13 21:18:20,312 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:20,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2019-10-13 21:18:20,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1091. [2019-10-13 21:18:20,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2019-10-13 21:18:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1681 transitions. [2019-10-13 21:18:20,370 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1681 transitions. Word has length 168 [2019-10-13 21:18:20,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:20,370 INFO L462 AbstractCegarLoop]: Abstraction has 1091 states and 1681 transitions. [2019-10-13 21:18:20,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:20,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1681 transitions. [2019-10-13 21:18:20,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 21:18:20,379 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:20,379 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:18:20,380 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:20,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:20,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1598706118, now seen corresponding path program 1 times [2019-10-13 21:18:20,380 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:20,381 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486830673] [2019-10-13 21:18:20,381 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:20,381 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:20,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:18:20,677 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486830673] [2019-10-13 21:18:20,678 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:20,678 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:20,678 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455915754] [2019-10-13 21:18:20,679 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:20,679 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:20,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:20,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:20,680 INFO L87 Difference]: Start difference. First operand 1091 states and 1681 transitions. Second operand 3 states. [2019-10-13 21:18:20,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:20,740 INFO L93 Difference]: Finished difference Result 1426 states and 2141 transitions. [2019-10-13 21:18:20,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:20,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-13 21:18:20,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:20,750 INFO L225 Difference]: With dead ends: 1426 [2019-10-13 21:18:20,751 INFO L226 Difference]: Without dead ends: 1205 [2019-10-13 21:18:20,755 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:20,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2019-10-13 21:18:20,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1204. [2019-10-13 21:18:20,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2019-10-13 21:18:20,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1843 transitions. [2019-10-13 21:18:20,827 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1843 transitions. Word has length 171 [2019-10-13 21:18:20,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:20,828 INFO L462 AbstractCegarLoop]: Abstraction has 1204 states and 1843 transitions. [2019-10-13 21:18:20,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:20,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1843 transitions. [2019-10-13 21:18:20,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2019-10-13 21:18:20,838 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:20,839 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:20,839 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:20,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:20,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1464715799, now seen corresponding path program 1 times [2019-10-13 21:18:20,840 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:20,840 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739014064] [2019-10-13 21:18:20,840 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:20,840 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:20,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:21,136 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:18:21,137 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739014064] [2019-10-13 21:18:21,137 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:21,137 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:18:21,137 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472235996] [2019-10-13 21:18:21,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:18:21,138 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:21,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:18:21,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:18:21,139 INFO L87 Difference]: Start difference. First operand 1204 states and 1843 transitions. Second operand 6 states. [2019-10-13 21:18:21,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:21,754 INFO L93 Difference]: Finished difference Result 2682 states and 4084 transitions. [2019-10-13 21:18:21,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:18:21,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 295 [2019-10-13 21:18:21,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:21,769 INFO L225 Difference]: With dead ends: 2682 [2019-10-13 21:18:21,769 INFO L226 Difference]: Without dead ends: 2359 [2019-10-13 21:18:21,772 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:18:21,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2019-10-13 21:18:21,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2348. [2019-10-13 21:18:21,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2348 states. [2019-10-13 21:18:21,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 3636 transitions. [2019-10-13 21:18:21,894 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 3636 transitions. Word has length 295 [2019-10-13 21:18:21,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:21,895 INFO L462 AbstractCegarLoop]: Abstraction has 2348 states and 3636 transitions. [2019-10-13 21:18:21,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:18:21,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 3636 transitions. [2019-10-13 21:18:21,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2019-10-13 21:18:21,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:21,909 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 21:18:21,909 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:21,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:21,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1738724539, now seen corresponding path program 1 times [2019-10-13 21:18:21,910 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:21,910 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628168639] [2019-10-13 21:18:21,911 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:21,911 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:21,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:18:22,213 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628168639] [2019-10-13 21:18:22,213 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:22,214 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:18:22,214 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704821527] [2019-10-13 21:18:22,215 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:18:22,215 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:22,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:18:22,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:18:22,216 INFO L87 Difference]: Start difference. First operand 2348 states and 3636 transitions. Second operand 9 states. [2019-10-13 21:18:22,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:22,589 INFO L93 Difference]: Finished difference Result 2991 states and 4495 transitions. [2019-10-13 21:18:22,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:18:22,589 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 296 [2019-10-13 21:18:22,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:22,603 INFO L225 Difference]: With dead ends: 2991 [2019-10-13 21:18:22,603 INFO L226 Difference]: Without dead ends: 2322 [2019-10-13 21:18:22,607 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:18:22,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2019-10-13 21:18:22,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 2318. [2019-10-13 21:18:22,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2318 states. [2019-10-13 21:18:22,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 3585 transitions. [2019-10-13 21:18:22,725 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 3585 transitions. Word has length 296 [2019-10-13 21:18:22,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:22,726 INFO L462 AbstractCegarLoop]: Abstraction has 2318 states and 3585 transitions. [2019-10-13 21:18:22,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:18:22,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 3585 transitions. [2019-10-13 21:18:22,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2019-10-13 21:18:22,740 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:22,741 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:22,741 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:22,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:22,741 INFO L82 PathProgramCache]: Analyzing trace with hash -2024929825, now seen corresponding path program 1 times [2019-10-13 21:18:22,742 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:22,742 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558755262] [2019-10-13 21:18:22,742 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:22,742 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:22,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:23,341 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:18:23,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558755262] [2019-10-13 21:18:23,343 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270886138] [2019-10-13 21:18:23,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:24,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 3330 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:24,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:24,512 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-13 21:18:24,513 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:25,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:25,235 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:25,333 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:25,540 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:18:25,541 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:18:25,541 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-13 21:18:25,541 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969032454] [2019-10-13 21:18:25,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:18:25,542 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:25,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:18:25,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:25,543 INFO L87 Difference]: Start difference. First operand 2318 states and 3585 transitions. Second operand 9 states. [2019-10-13 21:18:27,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:27,028 INFO L93 Difference]: Finished difference Result 4614 states and 7150 transitions. [2019-10-13 21:18:27,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:18:27,029 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 289 [2019-10-13 21:18:27,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:27,043 INFO L225 Difference]: With dead ends: 4614 [2019-10-13 21:18:27,044 INFO L226 Difference]: Without dead ends: 2332 [2019-10-13 21:18:27,052 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 567 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:18:27,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2019-10-13 21:18:27,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 2332. [2019-10-13 21:18:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2019-10-13 21:18:27,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3603 transitions. [2019-10-13 21:18:27,172 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3603 transitions. Word has length 289 [2019-10-13 21:18:27,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:27,172 INFO L462 AbstractCegarLoop]: Abstraction has 2332 states and 3603 transitions. [2019-10-13 21:18:27,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:18:27,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3603 transitions. [2019-10-13 21:18:27,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2019-10-13 21:18:27,185 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:27,186 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 21:18:27,402 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:27,403 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:27,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:27,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1114691624, now seen corresponding path program 1 times [2019-10-13 21:18:27,404 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:27,405 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110093962] [2019-10-13 21:18:27,405 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:27,405 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:27,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:28,096 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:18:28,097 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110093962] [2019-10-13 21:18:28,097 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099001379] [2019-10-13 21:18:28,098 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 [2019-10-13 21:18:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:28,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 3331 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:28,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:29,078 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-13 21:18:29,078 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:29,564 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:29,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:18:29,738 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:18:29,738 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-13 21:18:29,738 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139825801] [2019-10-13 21:18:29,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:18:29,739 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:29,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:18:29,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:18:29,740 INFO L87 Difference]: Start difference. First operand 2332 states and 3603 transitions. Second operand 7 states. [2019-10-13 21:18:30,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:30,943 INFO L93 Difference]: Finished difference Result 4617 states and 7171 transitions. [2019-10-13 21:18:30,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:18:30,944 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2019-10-13 21:18:30,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:30,967 INFO L225 Difference]: With dead ends: 4617 [2019-10-13 21:18:30,967 INFO L226 Difference]: Without dead ends: 2336 [2019-10-13 21:18:30,981 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 574 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:18:30,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2019-10-13 21:18:31,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 2336. [2019-10-13 21:18:31,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2336 states. [2019-10-13 21:18:31,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3608 transitions. [2019-10-13 21:18:31,127 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3608 transitions. Word has length 290 [2019-10-13 21:18:31,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:31,128 INFO L462 AbstractCegarLoop]: Abstraction has 2336 states and 3608 transitions. [2019-10-13 21:18:31,128 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:18:31,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3608 transitions. [2019-10-13 21:18:31,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2019-10-13 21:18:31,152 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:31,153 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:31,362 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:31,363 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:31,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:31,363 INFO L82 PathProgramCache]: Analyzing trace with hash 140529265, now seen corresponding path program 1 times [2019-10-13 21:18:31,364 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:31,364 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750201036] [2019-10-13 21:18:31,364 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:31,364 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:31,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:18:31,961 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750201036] [2019-10-13 21:18:31,961 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167551799] [2019-10-13 21:18:31,962 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 [2019-10-13 21:18:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:32,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 3332 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:32,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:33,146 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:18:33,146 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:33,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:33,831 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:33,919 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:18:34,089 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:34,089 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-13 21:18:34,089 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819963967] [2019-10-13 21:18:34,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:18:34,091 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:34,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:18:34,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:18:34,092 INFO L87 Difference]: Start difference. First operand 2336 states and 3608 transitions. Second operand 16 states. [2019-10-13 21:18:35,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:35,918 INFO L93 Difference]: Finished difference Result 4623 states and 7158 transitions. [2019-10-13 21:18:35,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:18:35,918 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 291 [2019-10-13 21:18:35,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:35,933 INFO L225 Difference]: With dead ends: 4623 [2019-10-13 21:18:35,933 INFO L226 Difference]: Without dead ends: 2348 [2019-10-13 21:18:35,942 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 571 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:18:35,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2019-10-13 21:18:36,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2346. [2019-10-13 21:18:36,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2346 states. [2019-10-13 21:18:36,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3619 transitions. [2019-10-13 21:18:36,512 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3619 transitions. Word has length 291 [2019-10-13 21:18:36,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:36,512 INFO L462 AbstractCegarLoop]: Abstraction has 2346 states and 3619 transitions. [2019-10-13 21:18:36,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:18:36,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3619 transitions. [2019-10-13 21:18:36,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2019-10-13 21:18:36,533 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:36,534 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:36,743 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:36,743 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:36,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:36,744 INFO L82 PathProgramCache]: Analyzing trace with hash -724288818, now seen corresponding path program 2 times [2019-10-13 21:18:36,745 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:36,745 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287768017] [2019-10-13 21:18:36,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:36,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:36,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:37,238 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-13 21:18:37,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287768017] [2019-10-13 21:18:37,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58771461] [2019-10-13 21:18:37,239 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 [2019-10-13 21:18:38,053 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:18:38,053 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:18:38,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:38,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:18:38,301 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:38,818 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:38,885 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 21:18:38,989 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:38,989 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-13 21:18:38,989 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674010373] [2019-10-13 21:18:38,993 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:18:38,993 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:38,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:18:38,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:18:38,994 INFO L87 Difference]: Start difference. First operand 2346 states and 3619 transitions. Second operand 12 states. [2019-10-13 21:18:40,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:40,923 INFO L93 Difference]: Finished difference Result 4614 states and 7146 transitions. [2019-10-13 21:18:40,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:18:40,923 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 292 [2019-10-13 21:18:40,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:40,938 INFO L225 Difference]: With dead ends: 4614 [2019-10-13 21:18:40,938 INFO L226 Difference]: Without dead ends: 2348 [2019-10-13 21:18:40,947 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 578 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:40,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2019-10-13 21:18:41,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2346. [2019-10-13 21:18:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2346 states. [2019-10-13 21:18:41,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3618 transitions. [2019-10-13 21:18:41,055 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3618 transitions. Word has length 292 [2019-10-13 21:18:41,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:41,057 INFO L462 AbstractCegarLoop]: Abstraction has 2346 states and 3618 transitions. [2019-10-13 21:18:41,057 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:18:41,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3618 transitions. [2019-10-13 21:18:41,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2019-10-13 21:18:41,070 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:41,071 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 21:18:41,281 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:41,281 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:41,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:41,282 INFO L82 PathProgramCache]: Analyzing trace with hash 883056807, now seen corresponding path program 3 times [2019-10-13 21:18:41,283 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:41,283 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402374930] [2019-10-13 21:18:41,283 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:41,284 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:41,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:18:41,728 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402374930] [2019-10-13 21:18:41,729 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443167933] [2019-10-13 21:18:41,729 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2019-10-13 21:18:42,429 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:18:42,429 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:18:42,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 2678 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:42,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:42,657 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:18:42,658 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:43,197 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:43,283 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:43,374 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 21:18:43,518 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:43,518 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-13 21:18:43,518 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863019171] [2019-10-13 21:18:43,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:18:43,520 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:43,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:18:43,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:43,521 INFO L87 Difference]: Start difference. First operand 2346 states and 3618 transitions. Second operand 15 states. [2019-10-13 21:18:44,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:44,969 INFO L93 Difference]: Finished difference Result 4621 states and 7153 transitions. [2019-10-13 21:18:44,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:18:44,969 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 293 [2019-10-13 21:18:44,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:44,985 INFO L225 Difference]: With dead ends: 4621 [2019-10-13 21:18:44,985 INFO L226 Difference]: Without dead ends: 2350 [2019-10-13 21:18:44,994 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 575 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:18:44,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2019-10-13 21:18:45,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2346. [2019-10-13 21:18:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2346 states. [2019-10-13 21:18:45,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3617 transitions. [2019-10-13 21:18:45,080 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3617 transitions. Word has length 293 [2019-10-13 21:18:45,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:45,081 INFO L462 AbstractCegarLoop]: Abstraction has 2346 states and 3617 transitions. [2019-10-13 21:18:45,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:18:45,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3617 transitions. [2019-10-13 21:18:45,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2019-10-13 21:18:45,091 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:45,092 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 21:18:45,302 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:45,303 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:45,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:45,303 INFO L82 PathProgramCache]: Analyzing trace with hash 949253727, now seen corresponding path program 1 times [2019-10-13 21:18:45,303 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:45,303 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647935274] [2019-10-13 21:18:45,304 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:45,304 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:45,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:45,755 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:18:45,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647935274] [2019-10-13 21:18:45,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697108264] [2019-10-13 21:18:45,756 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 [2019-10-13 21:18:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:46,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 3335 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:46,529 INFO L279 TraceCheckSpWp]: Computing forward predicates...