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_spec11_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:13:39,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:13:39,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:13:39,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:13:39,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:13:39,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:13:39,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:13:39,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:13:39,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:13:39,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:13:39,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:13:39,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:13:39,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:13:39,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:13:39,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:13:39,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:13:39,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:13:39,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:13:39,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:13:39,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:13:39,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:13:39,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:13:39,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:13:39,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:13:39,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:13:39,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:13:39,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:13:39,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:13:39,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:13:39,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:13:39,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:13:39,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:13:39,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:13:39,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:13:39,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:13:39,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:13:39,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:13:39,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:13:39,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:13:39,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:13:39,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:13:39,116 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 21:13:39,149 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:13:39,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:13:39,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:13:39,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:13:39,154 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:13:39,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:13:39,157 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:13:39,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:13:39,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:13:39,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:13:39,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:13:39,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:13:39,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:13:39,159 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:13:39,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:13:39,159 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:13:39,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:13:39,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:13:39,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:13:39,160 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:13:39,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:13:39,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:13:39,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:13:39,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:13:39,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:13:39,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:13:39,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:13:39,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:13:39,162 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 21:13:39,450 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:13:39,465 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:13:39,469 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:13:39,471 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:13:39,471 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:13:39,472 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product33.cil.c [2019-10-13 21:13:39,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c77c253bf/168b466fe24d4d95a7b6d5af43d7282c/FLAG1bbc3acc7 [2019-10-13 21:13:40,196 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:13:40,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product33.cil.c [2019-10-13 21:13:40,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c77c253bf/168b466fe24d4d95a7b6d5af43d7282c/FLAG1bbc3acc7 [2019-10-13 21:13:40,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c77c253bf/168b466fe24d4d95a7b6d5af43d7282c [2019-10-13 21:13:40,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:13:40,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:13:40,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:13:40,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:13:40,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:13:40,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:13:40" (1/1) ... [2019-10-13 21:13:40,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7492c7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:40, skipping insertion in model container [2019-10-13 21:13:40,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:13:40" (1/1) ... [2019-10-13 21:13:40,415 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:13:40,482 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:13:41,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:13:41,277 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:13:41,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:13:41,497 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:13:41,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:41 WrapperNode [2019-10-13 21:13:41,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:13:41,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:13:41,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:13:41,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:13:41,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:41" (1/1) ... [2019-10-13 21:13:41,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:41" (1/1) ... [2019-10-13 21:13:41,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:41" (1/1) ... [2019-10-13 21:13:41,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:41" (1/1) ... [2019-10-13 21:13:41,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:41" (1/1) ... [2019-10-13 21:13:41,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:41" (1/1) ... [2019-10-13 21:13:41,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:41" (1/1) ... [2019-10-13 21:13:41,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:13:41,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:13:41,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:13:41,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:13:41,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:41" (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 21:13:41,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:13:41,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:13:41,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:13:41,784 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:13:41,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:13:41,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:13:41,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:13:41,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:13:41,785 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:13:41,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:13:41,785 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:13:41,785 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:13:41,786 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:13:41,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:13:41,786 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:13:41,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:13:41,786 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:13:41,787 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:13:41,787 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:13:41,788 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:13:41,788 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:13:41,788 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:13:41,788 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:13:41,789 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:13:41,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:13:41,789 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:13:41,789 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:13:41,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:13:41,789 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:13:41,790 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:13:41,790 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:13:41,790 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:13:41,790 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:13:41,790 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-13 21:13:41,790 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:13:41,791 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:13:41,791 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:13:41,791 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:13:41,791 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:13:41,791 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:13:41,791 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:13:41,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:13:41,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:13:41,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:13:41,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:13:41,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:13:41,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:13:41,792 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:13:41,792 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:13:41,792 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:13:41,792 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:13:41,793 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:13:41,793 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:13:41,793 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:13:41,793 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:13:41,793 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:13:41,793 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:13:41,793 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:13:41,793 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:13:41,794 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:13:41,794 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:13:41,794 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:13:41,794 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:13:41,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:13:41,794 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:13:41,794 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:13:41,795 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:13:41,795 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:13:41,795 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:13:41,795 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:13:41,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:13:41,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:13:41,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:13:41,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:13:41,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:13:41,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:13:41,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:13:41,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:13:41,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:13:41,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:13:41,797 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:13:41,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:13:41,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:13:41,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:13:41,797 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:13:41,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:13:41,798 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:13:41,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:13:41,798 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:13:41,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:13:41,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-10-13 21:13:41,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:13:41,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:13:41,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:13:41,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:13:41,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:13:41,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:13:41,799 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:13:41,799 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:13:41,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:13:41,799 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:13:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:13:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:13:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:13:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:13:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:13:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:13:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:13:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:13:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:13:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:13:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:13:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:13:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:13:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:13:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:13:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:13:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:13:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:13:41,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:13:41,802 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:13:41,802 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:13:41,802 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:13:41,802 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:13:41,802 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:13:41,803 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:13:41,803 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:13:41,803 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:13:41,803 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:13:41,803 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:13:41,803 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:13:41,803 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:13:41,804 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:13:41,804 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:13:41,804 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:13:41,804 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:13:41,804 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:13:41,804 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:13:41,804 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:13:41,805 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:13:41,805 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:13:41,805 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:13:41,805 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:13:41,805 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:13:41,805 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:13:41,806 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:13:41,806 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:13:41,806 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:13:41,806 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:13:41,806 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:13:41,806 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:13:41,806 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:13:41,807 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:13:41,807 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:13:41,807 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:13:41,807 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:13:41,807 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:13:41,807 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:13:41,807 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:13:41,808 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:13:41,808 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:13:41,808 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:13:41,808 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:13:41,808 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:13:41,808 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:13:41,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:13:41,809 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-13 21:13:41,809 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:13:41,809 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:13:41,809 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:13:41,809 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:13:41,809 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:13:41,809 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:13:41,810 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:13:41,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:13:41,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:13:41,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:13:41,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:13:41,810 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:13:41,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:13:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:13:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:13:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:13:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:13:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:13:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:13:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:13:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:13:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:13:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:13:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:13:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:13:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:13:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:13:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:13:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:13:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:13:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:13:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:13:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:13:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:13:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:13:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:13:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:13:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:13:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:13:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:13:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:13:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:13:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:13:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:13:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:13:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:13:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:13:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-10-13 21:13:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:13:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:13:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:13:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:13:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:13:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:13:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:13:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:13:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:13:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:13:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:13:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:13:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:13:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:13:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:13:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:13:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:13:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:13:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:13:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:13:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:13:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:13:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:13:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:13:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:13:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:13:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:13:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:13:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:13:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:13:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:13:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:13:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:13:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:13:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:13:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:13:44,111 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:13:44,112 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:13:44,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:13:44 BoogieIcfgContainer [2019-10-13 21:13:44,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:13:44,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:13:44,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:13:44,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:13:44,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:13:40" (1/3) ... [2019-10-13 21:13:44,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e38af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:13:44, skipping insertion in model container [2019-10-13 21:13:44,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:41" (2/3) ... [2019-10-13 21:13:44,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e38af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:13:44, skipping insertion in model container [2019-10-13 21:13:44,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:13:44" (3/3) ... [2019-10-13 21:13:44,126 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec11_product33.cil.c [2019-10-13 21:13:44,138 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:13:44,158 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:13:44,170 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:13:44,216 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:13:44,216 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:13:44,217 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:13:44,218 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:13:44,218 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:13:44,226 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:13:44,226 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:13:44,226 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:13:44,270 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states. [2019-10-13 21:13:44,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-13 21:13:44,293 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:44,295 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:13:44,298 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:44,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:44,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1359243450, now seen corresponding path program 1 times [2019-10-13 21:13:44,316 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:44,316 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330304629] [2019-10-13 21:13:44,317 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:44,317 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:44,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:45,057 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330304629] [2019-10-13 21:13:45,058 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:45,058 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:13:45,059 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941552378] [2019-10-13 21:13:45,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:13:45,068 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:45,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:13:45,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:13:45,088 INFO L87 Difference]: Start difference. First operand 587 states. Second operand 2 states. [2019-10-13 21:13:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:45,181 INFO L93 Difference]: Finished difference Result 905 states and 1191 transitions. [2019-10-13 21:13:45,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:13:45,182 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 218 [2019-10-13 21:13:45,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:45,220 INFO L225 Difference]: With dead ends: 905 [2019-10-13 21:13:45,220 INFO L226 Difference]: Without dead ends: 564 [2019-10-13 21:13:45,231 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 21:13:45,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-10-13 21:13:45,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2019-10-13 21:13:45,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2019-10-13 21:13:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 744 transitions. [2019-10-13 21:13:45,353 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 744 transitions. Word has length 218 [2019-10-13 21:13:45,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:45,355 INFO L462 AbstractCegarLoop]: Abstraction has 564 states and 744 transitions. [2019-10-13 21:13:45,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:13:45,356 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 744 transitions. [2019-10-13 21:13:45,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-10-13 21:13:45,363 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:45,364 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:13:45,364 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:45,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:45,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1875979092, now seen corresponding path program 1 times [2019-10-13 21:13:45,365 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:45,365 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648484308] [2019-10-13 21:13:45,365 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:45,365 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:45,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:45,674 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648484308] [2019-10-13 21:13:45,675 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:45,675 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:45,675 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492545650] [2019-10-13 21:13:45,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:45,678 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:45,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:45,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:45,679 INFO L87 Difference]: Start difference. First operand 564 states and 744 transitions. Second operand 3 states. [2019-10-13 21:13:45,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:45,740 INFO L93 Difference]: Finished difference Result 888 states and 1154 transitions. [2019-10-13 21:13:45,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:45,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2019-10-13 21:13:45,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:45,745 INFO L225 Difference]: With dead ends: 888 [2019-10-13 21:13:45,745 INFO L226 Difference]: Without dead ends: 567 [2019-10-13 21:13:45,748 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 21:13:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-10-13 21:13:45,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 566. [2019-10-13 21:13:45,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2019-10-13 21:13:45,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 746 transitions. [2019-10-13 21:13:45,782 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 746 transitions. Word has length 219 [2019-10-13 21:13:45,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:45,783 INFO L462 AbstractCegarLoop]: Abstraction has 566 states and 746 transitions. [2019-10-13 21:13:45,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:45,783 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 746 transitions. [2019-10-13 21:13:45,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-13 21:13:45,788 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:45,788 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:45,789 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:45,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:45,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1298446294, now seen corresponding path program 1 times [2019-10-13 21:13:45,789 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:45,789 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499842082] [2019-10-13 21:13:45,790 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:45,790 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:45,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:46,019 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:46,019 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499842082] [2019-10-13 21:13:46,019 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:46,020 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:46,020 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034611861] [2019-10-13 21:13:46,021 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:46,021 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:46,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:46,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:46,022 INFO L87 Difference]: Start difference. First operand 566 states and 746 transitions. Second operand 3 states. [2019-10-13 21:13:46,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:46,062 INFO L93 Difference]: Finished difference Result 1110 states and 1493 transitions. [2019-10-13 21:13:46,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:46,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 231 [2019-10-13 21:13:46,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:46,067 INFO L225 Difference]: With dead ends: 1110 [2019-10-13 21:13:46,067 INFO L226 Difference]: Without dead ends: 609 [2019-10-13 21:13:46,069 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 21:13:46,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2019-10-13 21:13:46,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 608. [2019-10-13 21:13:46,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-10-13 21:13:46,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 818 transitions. [2019-10-13 21:13:46,096 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 818 transitions. Word has length 231 [2019-10-13 21:13:46,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:46,097 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 818 transitions. [2019-10-13 21:13:46,097 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:46,097 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 818 transitions. [2019-10-13 21:13:46,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-13 21:13:46,102 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:46,102 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:46,103 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:46,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:46,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1265412582, now seen corresponding path program 1 times [2019-10-13 21:13:46,103 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:46,104 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540004574] [2019-10-13 21:13:46,104 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:46,104 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:46,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:46,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540004574] [2019-10-13 21:13:46,391 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:46,391 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:46,391 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629144433] [2019-10-13 21:13:46,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:46,392 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:46,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:46,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:46,393 INFO L87 Difference]: Start difference. First operand 608 states and 818 transitions. Second operand 3 states. [2019-10-13 21:13:46,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:46,440 INFO L93 Difference]: Finished difference Result 1233 states and 1704 transitions. [2019-10-13 21:13:46,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:46,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2019-10-13 21:13:46,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:46,449 INFO L225 Difference]: With dead ends: 1233 [2019-10-13 21:13:46,449 INFO L226 Difference]: Without dead ends: 690 [2019-10-13 21:13:46,452 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 21:13:46,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-10-13 21:13:46,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 689. [2019-10-13 21:13:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2019-10-13 21:13:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 956 transitions. [2019-10-13 21:13:46,502 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 956 transitions. Word has length 232 [2019-10-13 21:13:46,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:46,503 INFO L462 AbstractCegarLoop]: Abstraction has 689 states and 956 transitions. [2019-10-13 21:13:46,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:46,504 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 956 transitions. [2019-10-13 21:13:46,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-13 21:13:46,514 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:46,515 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:46,515 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:46,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:46,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1880948969, now seen corresponding path program 1 times [2019-10-13 21:13:46,516 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:46,517 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795120213] [2019-10-13 21:13:46,518 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:46,518 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:46,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-13 21:13:47,155 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795120213] [2019-10-13 21:13:47,155 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:47,156 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-13 21:13:47,156 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112768479] [2019-10-13 21:13:47,157 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 21:13:47,157 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:47,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 21:13:47,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:13:47,158 INFO L87 Difference]: Start difference. First operand 689 states and 956 transitions. Second operand 19 states. [2019-10-13 21:13:52,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:52,600 INFO L93 Difference]: Finished difference Result 2335 states and 3224 transitions. [2019-10-13 21:13:52,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-13 21:13:52,601 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 235 [2019-10-13 21:13:52,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:52,617 INFO L225 Difference]: With dead ends: 2335 [2019-10-13 21:13:52,617 INFO L226 Difference]: Without dead ends: 2027 [2019-10-13 21:13:52,621 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-10-13 21:13:52,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2019-10-13 21:13:52,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1990. [2019-10-13 21:13:52,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1990 states. [2019-10-13 21:13:52,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2766 transitions. [2019-10-13 21:13:52,770 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2766 transitions. Word has length 235 [2019-10-13 21:13:52,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:52,774 INFO L462 AbstractCegarLoop]: Abstraction has 1990 states and 2766 transitions. [2019-10-13 21:13:52,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-13 21:13:52,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2766 transitions. [2019-10-13 21:13:52,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-13 21:13:52,786 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:52,787 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:52,787 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:52,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:52,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1271254735, now seen corresponding path program 1 times [2019-10-13 21:13:52,788 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:52,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557887054] [2019-10-13 21:13:52,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:52,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:52,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-13 21:13:53,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557887054] [2019-10-13 21:13:53,042 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:53,042 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:13:53,042 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206136330] [2019-10-13 21:13:53,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:13:53,043 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:53,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:13:53,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:13:53,044 INFO L87 Difference]: Start difference. First operand 1990 states and 2766 transitions. Second operand 11 states. [2019-10-13 21:13:53,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:53,658 INFO L93 Difference]: Finished difference Result 3347 states and 4565 transitions. [2019-10-13 21:13:53,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:13:53,659 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 236 [2019-10-13 21:13:53,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:53,675 INFO L225 Difference]: With dead ends: 3347 [2019-10-13 21:13:53,675 INFO L226 Difference]: Without dead ends: 2048 [2019-10-13 21:13:53,682 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:13:53,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2019-10-13 21:13:53,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 2048. [2019-10-13 21:13:53,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2048 states. [2019-10-13 21:13:53,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 2859 transitions. [2019-10-13 21:13:53,822 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 2859 transitions. Word has length 236 [2019-10-13 21:13:53,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:53,823 INFO L462 AbstractCegarLoop]: Abstraction has 2048 states and 2859 transitions. [2019-10-13 21:13:53,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:13:53,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 2859 transitions. [2019-10-13 21:13:53,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-13 21:13:53,836 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:53,837 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:53,837 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:53,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:53,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1576503556, now seen corresponding path program 1 times [2019-10-13 21:13:53,838 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:53,838 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049200243] [2019-10-13 21:13:53,839 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:53,839 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:53,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-13 21:13:54,190 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049200243] [2019-10-13 21:13:54,190 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:54,191 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-13 21:13:54,191 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687540880] [2019-10-13 21:13:54,192 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:13:54,192 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:54,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:13:54,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:13:54,193 INFO L87 Difference]: Start difference. First operand 2048 states and 2859 transitions. Second operand 16 states. [2019-10-13 21:13:54,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:54,620 INFO L93 Difference]: Finished difference Result 3423 states and 4679 transitions. [2019-10-13 21:13:54,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:13:54,621 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 236 [2019-10-13 21:13:54,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:54,638 INFO L225 Difference]: With dead ends: 3423 [2019-10-13 21:13:54,638 INFO L226 Difference]: Without dead ends: 2080 [2019-10-13 21:13:54,644 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:13:54,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2019-10-13 21:13:54,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2080. [2019-10-13 21:13:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2080 states. [2019-10-13 21:13:54,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 2892 transitions. [2019-10-13 21:13:54,814 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 2892 transitions. Word has length 236 [2019-10-13 21:13:54,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:54,815 INFO L462 AbstractCegarLoop]: Abstraction has 2080 states and 2892 transitions. [2019-10-13 21:13:54,815 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:13:54,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 2892 transitions. [2019-10-13 21:13:54,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-13 21:13:54,824 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:54,824 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:54,824 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:54,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:54,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1218781435, now seen corresponding path program 1 times [2019-10-13 21:13:54,825 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:54,826 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17518643] [2019-10-13 21:13:54,826 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:54,826 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:54,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-13 21:13:55,223 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17518643] [2019-10-13 21:13:55,223 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:55,224 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-13 21:13:55,224 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93270082] [2019-10-13 21:13:55,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:13:55,225 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:55,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:13:55,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:13:55,226 INFO L87 Difference]: Start difference. First operand 2080 states and 2892 transitions. Second operand 15 states. [2019-10-13 21:13:59,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:59,422 INFO L93 Difference]: Finished difference Result 3463 states and 4723 transitions. [2019-10-13 21:13:59,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-10-13 21:13:59,423 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 236 [2019-10-13 21:13:59,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:59,440 INFO L225 Difference]: With dead ends: 3463 [2019-10-13 21:13:59,440 INFO L226 Difference]: Without dead ends: 2164 [2019-10-13 21:13:59,449 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-10-13 21:13:59,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2019-10-13 21:13:59,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 2109. [2019-10-13 21:13:59,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2109 states. [2019-10-13 21:13:59,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 2939 transitions. [2019-10-13 21:13:59,582 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 2939 transitions. Word has length 236 [2019-10-13 21:13:59,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:59,583 INFO L462 AbstractCegarLoop]: Abstraction has 2109 states and 2939 transitions. [2019-10-13 21:13:59,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:13:59,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 2939 transitions. [2019-10-13 21:13:59,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-13 21:13:59,592 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:59,592 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:59,593 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:59,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:59,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1072234906, now seen corresponding path program 1 times [2019-10-13 21:13:59,593 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:59,594 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627741315] [2019-10-13 21:13:59,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:59,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:59,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-13 21:13:59,969 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627741315] [2019-10-13 21:13:59,970 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:59,970 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:13:59,971 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097459754] [2019-10-13 21:13:59,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:13:59,974 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:59,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:13:59,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:13:59,975 INFO L87 Difference]: Start difference. First operand 2109 states and 2939 transitions. Second operand 5 states. [2019-10-13 21:14:01,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:01,489 INFO L93 Difference]: Finished difference Result 5198 states and 7180 transitions. [2019-10-13 21:14:01,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:14:01,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 236 [2019-10-13 21:14:01,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:01,519 INFO L225 Difference]: With dead ends: 5198 [2019-10-13 21:14:01,519 INFO L226 Difference]: Without dead ends: 4515 [2019-10-13 21:14:01,525 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:14:01,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4515 states. [2019-10-13 21:14:01,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4515 to 4484. [2019-10-13 21:14:01,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4484 states. [2019-10-13 21:14:01,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 6217 transitions. [2019-10-13 21:14:01,789 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 6217 transitions. Word has length 236 [2019-10-13 21:14:01,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:01,790 INFO L462 AbstractCegarLoop]: Abstraction has 4484 states and 6217 transitions. [2019-10-13 21:14:01,790 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:14:01,790 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 6217 transitions. [2019-10-13 21:14:01,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-13 21:14:01,804 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:01,805 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:01,805 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:01,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:01,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1057984761, now seen corresponding path program 1 times [2019-10-13 21:14:01,806 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:01,806 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024042198] [2019-10-13 21:14:01,806 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:01,806 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:01,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:14:02,112 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024042198] [2019-10-13 21:14:02,115 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360214160] [2019-10-13 21:14:02,116 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 21:14:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:02,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 3032 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:14:02,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:14:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:03,048 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:14:03,427 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:14:03,517 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:03,583 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:14:03,708 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:14:03,709 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-13 21:14:03,709 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798603104] [2019-10-13 21:14:03,710 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:14:03,710 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:03,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:14:03,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:14:03,711 INFO L87 Difference]: Start difference. First operand 4484 states and 6217 transitions. Second operand 9 states. [2019-10-13 21:14:06,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:06,533 INFO L93 Difference]: Finished difference Result 8946 states and 12414 transitions. [2019-10-13 21:14:06,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:14:06,533 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 236 [2019-10-13 21:14:06,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:06,562 INFO L225 Difference]: With dead ends: 8946 [2019-10-13 21:14:06,563 INFO L226 Difference]: Without dead ends: 4498 [2019-10-13 21:14:06,578 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 465 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:14:06,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4498 states. [2019-10-13 21:14:06,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4498 to 4498. [2019-10-13 21:14:06,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4498 states. [2019-10-13 21:14:06,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 6235 transitions. [2019-10-13 21:14:06,890 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 6235 transitions. Word has length 236 [2019-10-13 21:14:06,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:06,892 INFO L462 AbstractCegarLoop]: Abstraction has 4498 states and 6235 transitions. [2019-10-13 21:14:06,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:14:06,892 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 6235 transitions. [2019-10-13 21:14:06,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-13 21:14:06,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:06,910 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:07,122 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:14:07,123 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:07,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:07,123 INFO L82 PathProgramCache]: Analyzing trace with hash -2058967403, now seen corresponding path program 1 times [2019-10-13 21:14:07,124 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:07,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13063288] [2019-10-13 21:14:07,125 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:07,125 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:07,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:07,568 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:14:07,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13063288] [2019-10-13 21:14:07,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121633643] [2019-10-13 21:14:07,570 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 21:14:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:08,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 3033 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:14:08,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:14:08,629 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:08,630 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:14:08,912 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:08,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:14:09,043 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:14:09,044 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:14:09,044 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279587564] [2019-10-13 21:14:09,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:14:09,045 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:09,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:14:09,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:14:09,046 INFO L87 Difference]: Start difference. First operand 4498 states and 6235 transitions. Second operand 7 states. [2019-10-13 21:14:10,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:10,528 INFO L93 Difference]: Finished difference Result 8951 states and 12434 transitions. [2019-10-13 21:14:10,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:14:10,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2019-10-13 21:14:10,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:10,559 INFO L225 Difference]: With dead ends: 8951 [2019-10-13 21:14:10,559 INFO L226 Difference]: Without dead ends: 4504 [2019-10-13 21:14:10,578 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 472 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:14:10,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4504 states. [2019-10-13 21:14:10,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4504 to 4504. [2019-10-13 21:14:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4504 states. [2019-10-13 21:14:10,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4504 states to 4504 states and 6242 transitions. [2019-10-13 21:14:10,839 INFO L78 Accepts]: Start accepts. Automaton has 4504 states and 6242 transitions. Word has length 237 [2019-10-13 21:14:10,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:10,840 INFO L462 AbstractCegarLoop]: Abstraction has 4504 states and 6242 transitions. [2019-10-13 21:14:10,840 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:14:10,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4504 states and 6242 transitions. [2019-10-13 21:14:10,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-10-13 21:14:10,854 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:10,855 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:11,065 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:14:11,066 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:11,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:11,066 INFO L82 PathProgramCache]: Analyzing trace with hash 654423498, now seen corresponding path program 1 times [2019-10-13 21:14:11,066 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:11,067 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185393518] [2019-10-13 21:14:11,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:11,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:11,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat