java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/email_spec9_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 15:10:44,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 15:10:44,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 15:10:44,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 15:10:44,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 15:10:44,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 15:10:44,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 15:10:44,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 15:10:44,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 15:10:44,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 15:10:44,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 15:10:44,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 15:10:44,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 15:10:44,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 15:10:44,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 15:10:44,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 15:10:44,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 15:10:44,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 15:10:44,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 15:10:44,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 15:10:44,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 15:10:44,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 15:10:44,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 15:10:44,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 15:10:44,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 15:10:44,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 15:10:44,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 15:10:44,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 15:10:44,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 15:10:44,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 15:10:44,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 15:10:44,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 15:10:44,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 15:10:44,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 15:10:44,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 15:10:44,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 15:10:44,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 15:10:44,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 15:10:44,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 15:10:44,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 15:10:44,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 15:10:44,643 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 [2019-10-07 15:10:44,675 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 15:10:44,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 15:10:44,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 15:10:44,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 15:10:44,681 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 15:10:44,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 15:10:44,682 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 15:10:44,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 15:10:44,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 15:10:44,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 15:10:44,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 15:10:44,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 15:10:44,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 15:10:44,683 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 15:10:44,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 15:10:44,684 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 15:10:44,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 15:10:44,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 15:10:44,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 15:10:44,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 15:10:44,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 15:10:44,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 15:10:44,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 15:10:44,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 15:10:44,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 15:10:44,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 15:10:44,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 15:10:44,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 15:10:44,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 15:10:44,972 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 15:10:44,986 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 15:10:44,990 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 15:10:44,991 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 15:10:44,992 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 15:10:44,992 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product21.cil.c [2019-10-07 15:10:45,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce5a054b0/de39e6ead91b4e4893ee8f0f2f97f213/FLAG4fd615e8e [2019-10-07 15:10:45,755 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 15:10:45,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product21.cil.c [2019-10-07 15:10:45,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce5a054b0/de39e6ead91b4e4893ee8f0f2f97f213/FLAG4fd615e8e [2019-10-07 15:10:45,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce5a054b0/de39e6ead91b4e4893ee8f0f2f97f213 [2019-10-07 15:10:45,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 15:10:45,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 15:10:45,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 15:10:45,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 15:10:45,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 15:10:45,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:10:45" (1/1) ... [2019-10-07 15:10:45,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a87286f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:45, skipping insertion in model container [2019-10-07 15:10:45,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:10:45" (1/1) ... [2019-10-07 15:10:45,978 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 15:10:46,049 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 15:10:46,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:10:46,933 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 15:10:47,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:10:47,183 INFO L192 MainTranslator]: Completed translation [2019-10-07 15:10:47,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:47 WrapperNode [2019-10-07 15:10:47,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 15:10:47,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 15:10:47,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 15:10:47,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 15:10:47,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:47" (1/1) ... [2019-10-07 15:10:47,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:47" (1/1) ... [2019-10-07 15:10:47,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:47" (1/1) ... [2019-10-07 15:10:47,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:47" (1/1) ... [2019-10-07 15:10:47,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:47" (1/1) ... [2019-10-07 15:10:47,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:47" (1/1) ... [2019-10-07 15:10:47,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:47" (1/1) ... [2019-10-07 15:10:47,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 15:10:47,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 15:10:47,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 15:10:47,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 15:10:47,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:47" (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 [2019-10-07 15:10:47,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 15:10:47,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 15:10:47,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 15:10:47,503 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-07 15:10:47,503 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-07 15:10:47,504 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-07 15:10:47,505 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-07 15:10:47,505 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-07 15:10:47,505 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-07 15:10:47,505 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-07 15:10:47,505 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-07 15:10:47,506 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-07 15:10:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-07 15:10:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-07 15:10:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-07 15:10:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-07 15:10:47,509 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-07 15:10:47,510 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-07 15:10:47,510 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-07 15:10:47,510 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-07 15:10:47,510 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-07 15:10:47,511 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-07 15:10:47,511 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-07 15:10:47,511 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-07 15:10:47,511 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-07 15:10:47,512 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-07 15:10:47,512 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-07 15:10:47,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 15:10:47,512 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 15:10:47,512 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 15:10:47,513 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 15:10:47,513 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 15:10:47,513 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-07 15:10:47,513 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-07 15:10:47,514 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-07 15:10:47,514 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-07 15:10:47,514 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-07 15:10:47,514 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-07 15:10:47,515 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-07 15:10:47,515 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-07 15:10:47,515 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-07 15:10:47,515 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-07 15:10:47,515 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-07 15:10:47,515 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-07 15:10:47,516 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-07 15:10:47,516 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-07 15:10:47,516 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-07 15:10:47,516 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-07 15:10:47,516 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-07 15:10:47,517 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-07 15:10:47,517 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-07 15:10:47,517 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-07 15:10:47,517 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-07 15:10:47,517 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-07 15:10:47,517 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-07 15:10:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-07 15:10:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-07 15:10:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-07 15:10:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-07 15:10:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-07 15:10:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-07 15:10:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-07 15:10:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-07 15:10:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-07 15:10:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-07 15:10:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-07 15:10:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-07 15:10:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-07 15:10:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-07 15:10:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-07 15:10:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-07 15:10:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-07 15:10:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-07 15:10:47,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-07 15:10:47,522 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-07 15:10:47,523 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-07 15:10:47,523 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-07 15:10:47,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-07 15:10:47,524 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-07 15:10:47,524 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-07 15:10:47,524 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-07 15:10:47,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-07 15:10:47,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-07 15:10:47,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-07 15:10:47,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-07 15:10:47,525 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 15:10:47,526 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-07 15:10:47,527 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-07 15:10:47,527 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-07 15:10:47,527 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-07 15:10:47,527 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-07 15:10:47,527 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-07 15:10:47,528 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-07 15:10:47,528 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-07 15:10:47,528 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 15:10:47,528 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 15:10:47,528 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-07 15:10:47,529 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-07 15:10:47,529 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-07 15:10:47,529 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-07 15:10:47,529 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-07 15:10:47,529 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-07 15:10:47,529 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-07 15:10:47,529 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-07 15:10:47,530 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-07 15:10:47,530 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-07 15:10:47,530 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-07 15:10:47,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 15:10:47,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 15:10:47,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 15:10:47,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 15:10:47,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 15:10:47,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 15:10:47,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 15:10:47,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 15:10:47,532 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 15:10:47,532 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-07 15:10:47,532 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-07 15:10:47,533 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-07 15:10:47,533 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-07 15:10:47,533 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-07 15:10:47,533 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-07 15:10:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-07 15:10:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-07 15:10:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-07 15:10:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-07 15:10:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-07 15:10:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-07 15:10:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-07 15:10:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-07 15:10:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-07 15:10:47,537 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-07 15:10:47,537 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-07 15:10:47,538 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-07 15:10:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-07 15:10:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-07 15:10:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-07 15:10:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-07 15:10:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-07 15:10:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-07 15:10:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-07 15:10:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-07 15:10:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-07 15:10:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-07 15:10:47,550 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-07 15:10:47,551 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-07 15:10:47,551 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-07 15:10:47,551 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-07 15:10:47,551 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-07 15:10:47,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 15:10:47,551 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-07 15:10:47,551 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-07 15:10:47,552 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-07 15:10:47,552 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-07 15:10:47,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-07 15:10:47,552 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-07 15:10:47,553 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-07 15:10:47,553 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-07 15:10:47,553 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-07 15:10:47,553 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-07 15:10:47,553 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-07 15:10:47,553 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 15:10:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 15:10:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 15:10:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 15:10:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 15:10:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-07 15:10:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-07 15:10:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-07 15:10:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-07 15:10:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-07 15:10:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-07 15:10:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-07 15:10:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-07 15:10:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-07 15:10:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-07 15:10:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-07 15:10:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-07 15:10:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-07 15:10:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-07 15:10:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-07 15:10:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-07 15:10:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-07 15:10:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-07 15:10:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-07 15:10:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-07 15:10:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-07 15:10:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-07 15:10:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-07 15:10:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-07 15:10:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-07 15:10:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-07 15:10:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-07 15:10:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-07 15:10:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-07 15:10:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-07 15:10:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-07 15:10:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-07 15:10:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-07 15:10:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-07 15:10:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-07 15:10:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-07 15:10:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-07 15:10:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-07 15:10:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-07 15:10:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-07 15:10:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-07 15:10:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-07 15:10:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-07 15:10:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-07 15:10:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 15:10:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-07 15:10:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-07 15:10:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-07 15:10:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-07 15:10:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 15:10:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 15:10:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-07 15:10:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-07 15:10:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-07 15:10:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-07 15:10:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-07 15:10:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 15:10:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 15:10:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 15:10:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 15:10:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 15:10:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 15:10:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 15:10:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 15:10:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 15:10:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 15:10:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 15:10:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 15:10:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 15:10:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 15:10:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 15:10:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 15:10:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 15:10:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 15:10:47,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 15:10:52,620 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 15:10:52,620 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-07 15:10:52,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:10:52 BoogieIcfgContainer [2019-10-07 15:10:52,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 15:10:52,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 15:10:52,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 15:10:52,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 15:10:52,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:10:45" (1/3) ... [2019-10-07 15:10:52,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7418c44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:10:52, skipping insertion in model container [2019-10-07 15:10:52,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:10:47" (2/3) ... [2019-10-07 15:10:52,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7418c44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:10:52, skipping insertion in model container [2019-10-07 15:10:52,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:10:52" (3/3) ... [2019-10-07 15:10:52,632 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product21.cil.c [2019-10-07 15:10:52,697 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 15:10:52,707 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 15:10:52,719 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 15:10:52,749 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 15:10:52,750 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 15:10:52,750 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 15:10:52,750 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 15:10:52,750 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 15:10:52,750 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 15:10:52,750 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 15:10:52,750 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 15:10:52,796 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states. [2019-10-07 15:10:52,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-07 15:10:52,820 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:10:52,822 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:10:52,824 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:10:52,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:10:52,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1695513081, now seen corresponding path program 1 times [2019-10-07 15:10:52,840 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:10:52,840 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:10:52,840 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:10:52,840 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:10:52,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:10:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:10:53,410 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 15:10:53,411 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:10:53,411 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:10:53,411 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 15:10:53,416 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 15:10:53,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 15:10:53,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 15:10:53,434 INFO L87 Difference]: Start difference. First operand 396 states. Second operand 2 states. [2019-10-07 15:10:53,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:10:53,511 INFO L93 Difference]: Finished difference Result 574 states and 683 transitions. [2019-10-07 15:10:53,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 15:10:53,513 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 121 [2019-10-07 15:10:53,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:10:53,552 INFO L225 Difference]: With dead ends: 574 [2019-10-07 15:10:53,552 INFO L226 Difference]: Without dead ends: 369 [2019-10-07 15:10:53,563 INFO L606 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 [2019-10-07 15:10:53,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2019-10-07 15:10:53,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2019-10-07 15:10:53,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2019-10-07 15:10:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 436 transitions. [2019-10-07 15:10:53,690 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 436 transitions. Word has length 121 [2019-10-07 15:10:53,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:10:53,692 INFO L462 AbstractCegarLoop]: Abstraction has 369 states and 436 transitions. [2019-10-07 15:10:53,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 15:10:53,692 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 436 transitions. [2019-10-07 15:10:53,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-07 15:10:53,697 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:10:53,698 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:10:53,698 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:10:53,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:10:53,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1314460509, now seen corresponding path program 1 times [2019-10-07 15:10:53,699 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:10:53,699 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:10:53,699 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:10:53,700 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:10:53,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:10:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:10:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 15:10:53,918 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:10:53,919 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:10:53,919 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:10:53,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:10:53,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:10:53,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:10:53,927 INFO L87 Difference]: Start difference. First operand 369 states and 436 transitions. Second operand 3 states. [2019-10-07 15:10:54,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:10:54,010 INFO L93 Difference]: Finished difference Result 559 states and 652 transitions. [2019-10-07 15:10:54,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:10:54,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2019-10-07 15:10:54,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:10:54,021 INFO L225 Difference]: With dead ends: 559 [2019-10-07 15:10:54,021 INFO L226 Difference]: Without dead ends: 371 [2019-10-07 15:10:54,026 INFO L606 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 [2019-10-07 15:10:54,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2019-10-07 15:10:54,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2019-10-07 15:10:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2019-10-07 15:10:54,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 438 transitions. [2019-10-07 15:10:54,075 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 438 transitions. Word has length 122 [2019-10-07 15:10:54,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:10:54,077 INFO L462 AbstractCegarLoop]: Abstraction has 371 states and 438 transitions. [2019-10-07 15:10:54,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:10:54,077 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 438 transitions. [2019-10-07 15:10:54,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-07 15:10:54,083 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:10:54,083 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:10:54,083 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:10:54,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:10:54,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1445351550, now seen corresponding path program 1 times [2019-10-07 15:10:54,084 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:10:54,084 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:10:54,084 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:10:54,085 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:10:54,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:10:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:10:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 15:10:54,383 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:10:54,384 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:10:54,384 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:10:54,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:10:54,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:10:54,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:10:54,387 INFO L87 Difference]: Start difference. First operand 371 states and 438 transitions. Second operand 3 states. [2019-10-07 15:10:54,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:10:54,454 INFO L93 Difference]: Finished difference Result 726 states and 886 transitions. [2019-10-07 15:10:54,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:10:54,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2019-10-07 15:10:54,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:10:54,458 INFO L225 Difference]: With dead ends: 726 [2019-10-07 15:10:54,458 INFO L226 Difference]: Without dead ends: 413 [2019-10-07 15:10:54,460 INFO L606 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 [2019-10-07 15:10:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2019-10-07 15:10:54,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 412. [2019-10-07 15:10:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2019-10-07 15:10:54,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 509 transitions. [2019-10-07 15:10:54,487 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 509 transitions. Word has length 127 [2019-10-07 15:10:54,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:10:54,488 INFO L462 AbstractCegarLoop]: Abstraction has 412 states and 509 transitions. [2019-10-07 15:10:54,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:10:54,488 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 509 transitions. [2019-10-07 15:10:54,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-07 15:10:54,492 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:10:54,493 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:10:54,493 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:10:54,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:10:54,494 INFO L82 PathProgramCache]: Analyzing trace with hash -305888953, now seen corresponding path program 1 times [2019-10-07 15:10:54,494 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:10:54,494 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:10:54,495 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:10:54,495 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:10:54,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:10:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:10:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 15:10:54,777 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:10:54,777 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:10:54,778 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:10:54,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:10:54,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:10:54,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:10:54,780 INFO L87 Difference]: Start difference. First operand 412 states and 509 transitions. Second operand 3 states. [2019-10-07 15:10:54,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:10:54,853 INFO L93 Difference]: Finished difference Result 652 states and 789 transitions. [2019-10-07 15:10:54,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:10:54,854 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2019-10-07 15:10:54,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:10:54,862 INFO L225 Difference]: With dead ends: 652 [2019-10-07 15:10:54,863 INFO L226 Difference]: Without dead ends: 476 [2019-10-07 15:10:54,864 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:10:54,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2019-10-07 15:10:54,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 475. [2019-10-07 15:10:54,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2019-10-07 15:10:54,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 582 transitions. [2019-10-07 15:10:54,910 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 582 transitions. Word has length 128 [2019-10-07 15:10:54,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:10:54,911 INFO L462 AbstractCegarLoop]: Abstraction has 475 states and 582 transitions. [2019-10-07 15:10:54,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:10:54,911 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 582 transitions. [2019-10-07 15:10:54,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-10-07 15:10:54,918 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:10:54,919 INFO L385 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:10:54,919 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:10:54,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:10:54,920 INFO L82 PathProgramCache]: Analyzing trace with hash 989295606, now seen corresponding path program 1 times [2019-10-07 15:10:54,920 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:10:54,920 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:10:54,920 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:10:54,920 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:10:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:10:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:10:55,380 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-07 15:10:55,381 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:10:55,381 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:10:55,381 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-07 15:10:55,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-07 15:10:55,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-07 15:10:55,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-07 15:10:55,383 INFO L87 Difference]: Start difference. First operand 475 states and 582 transitions. Second operand 12 states. [2019-10-07 15:10:57,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:10:57,777 INFO L93 Difference]: Finished difference Result 1104 states and 1341 transitions. [2019-10-07 15:10:57,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-07 15:10:57,778 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 220 [2019-10-07 15:10:57,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:10:57,784 INFO L225 Difference]: With dead ends: 1104 [2019-10-07 15:10:57,785 INFO L226 Difference]: Without dead ends: 870 [2019-10-07 15:10:57,787 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2019-10-07 15:10:57,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2019-10-07 15:10:57,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 861. [2019-10-07 15:10:57,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2019-10-07 15:10:57,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1064 transitions. [2019-10-07 15:10:57,841 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1064 transitions. Word has length 220 [2019-10-07 15:10:57,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:10:57,842 INFO L462 AbstractCegarLoop]: Abstraction has 861 states and 1064 transitions. [2019-10-07 15:10:57,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-07 15:10:57,842 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1064 transitions. [2019-10-07 15:10:57,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-10-07 15:10:57,848 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:10:57,848 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:10:57,849 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:10:57,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:10:57,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1830361522, now seen corresponding path program 1 times [2019-10-07 15:10:57,849 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:10:57,849 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:10:57,850 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:10:57,850 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:10:57,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:10:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:10:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-07 15:10:58,154 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:10:58,154 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:10:58,154 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-07 15:10:58,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-07 15:10:58,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-07 15:10:58,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-07 15:10:58,156 INFO L87 Difference]: Start difference. First operand 861 states and 1064 transitions. Second operand 11 states. [2019-10-07 15:11:01,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:11:01,423 INFO L93 Difference]: Finished difference Result 1528 states and 1828 transitions. [2019-10-07 15:11:01,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-07 15:11:01,423 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 222 [2019-10-07 15:11:01,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:11:01,432 INFO L225 Difference]: With dead ends: 1528 [2019-10-07 15:11:01,432 INFO L226 Difference]: Without dead ends: 1137 [2019-10-07 15:11:01,434 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2019-10-07 15:11:01,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2019-10-07 15:11:01,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1126. [2019-10-07 15:11:01,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1126 states. [2019-10-07 15:11:01,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1369 transitions. [2019-10-07 15:11:01,506 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1369 transitions. Word has length 222 [2019-10-07 15:11:01,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:11:01,509 INFO L462 AbstractCegarLoop]: Abstraction has 1126 states and 1369 transitions. [2019-10-07 15:11:01,510 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-07 15:11:01,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1369 transitions. [2019-10-07 15:11:01,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-10-07 15:11:01,516 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:11:01,516 INFO L385 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:11:01,517 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:11:01,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:11:01,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1144993830, now seen corresponding path program 1 times [2019-10-07 15:11:01,518 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:11:01,518 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:01,518 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:01,518 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:01,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:11:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:11:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-07 15:11:01,736 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:01,737 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:11:01,737 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:11:01,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:11:01,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:11:01,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:11:01,740 INFO L87 Difference]: Start difference. First operand 1126 states and 1369 transitions. Second operand 3 states. [2019-10-07 15:11:01,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:11:01,803 INFO L93 Difference]: Finished difference Result 2358 states and 2959 transitions. [2019-10-07 15:11:01,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:11:01,804 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2019-10-07 15:11:01,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:11:01,815 INFO L225 Difference]: With dead ends: 2358 [2019-10-07 15:11:01,816 INFO L226 Difference]: Without dead ends: 1290 [2019-10-07 15:11:01,819 INFO L606 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 [2019-10-07 15:11:01,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2019-10-07 15:11:01,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1288. [2019-10-07 15:11:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2019-10-07 15:11:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1647 transitions. [2019-10-07 15:11:01,908 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1647 transitions. Word has length 242 [2019-10-07 15:11:01,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:11:01,909 INFO L462 AbstractCegarLoop]: Abstraction has 1288 states and 1647 transitions. [2019-10-07 15:11:01,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:11:01,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1647 transitions. [2019-10-07 15:11:01,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2019-10-07 15:11:01,916 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:11:01,916 INFO L385 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:11:01,916 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:11:01,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:11:01,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1845417953, now seen corresponding path program 1 times [2019-10-07 15:11:01,917 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:11:01,917 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:01,918 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:01,918 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:01,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:11:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:11:02,199 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-07 15:11:02,200 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:02,200 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:11:02,201 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:11:02,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:11:02,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:11:02,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:11:02,203 INFO L87 Difference]: Start difference. First operand 1288 states and 1647 transitions. Second operand 3 states. [2019-10-07 15:11:02,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:11:02,373 INFO L93 Difference]: Finished difference Result 2824 states and 3761 transitions. [2019-10-07 15:11:02,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:11:02,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 243 [2019-10-07 15:11:02,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:11:02,383 INFO L225 Difference]: With dead ends: 2824 [2019-10-07 15:11:02,383 INFO L226 Difference]: Without dead ends: 1594 [2019-10-07 15:11:02,388 INFO L606 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 [2019-10-07 15:11:02,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2019-10-07 15:11:02,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1592. [2019-10-07 15:11:02,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1592 states. [2019-10-07 15:11:02,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2167 transitions. [2019-10-07 15:11:02,477 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2167 transitions. Word has length 243 [2019-10-07 15:11:02,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:11:02,477 INFO L462 AbstractCegarLoop]: Abstraction has 1592 states and 2167 transitions. [2019-10-07 15:11:02,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:11:02,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2167 transitions. [2019-10-07 15:11:02,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2019-10-07 15:11:02,486 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:11:02,487 INFO L385 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:11:02,487 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:11:02,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:11:02,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1408386709, now seen corresponding path program 1 times [2019-10-07 15:11:02,488 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:11:02,488 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:02,488 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:02,488 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:02,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:11:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:11:02,688 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-07 15:11:02,689 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:02,689 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:11:02,690 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:11:02,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:11:02,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:11:02,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:11:02,691 INFO L87 Difference]: Start difference. First operand 1592 states and 2167 transitions. Second operand 3 states. [2019-10-07 15:11:02,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:11:02,795 INFO L93 Difference]: Finished difference Result 3712 states and 5281 transitions. [2019-10-07 15:11:02,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:11:02,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 249 [2019-10-07 15:11:02,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:11:02,809 INFO L225 Difference]: With dead ends: 3712 [2019-10-07 15:11:02,809 INFO L226 Difference]: Without dead ends: 2178 [2019-10-07 15:11:02,815 INFO L606 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 [2019-10-07 15:11:02,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2178 states. [2019-10-07 15:11:02,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2178 to 2176. [2019-10-07 15:11:02,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2176 states. [2019-10-07 15:11:02,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 3159 transitions. [2019-10-07 15:11:02,935 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 3159 transitions. Word has length 249 [2019-10-07 15:11:02,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:11:02,935 INFO L462 AbstractCegarLoop]: Abstraction has 2176 states and 3159 transitions. [2019-10-07 15:11:02,935 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:11:02,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 3159 transitions. [2019-10-07 15:11:02,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-07 15:11:02,947 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:11:02,947 INFO L385 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:11:02,948 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:11:02,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:11:02,948 INFO L82 PathProgramCache]: Analyzing trace with hash -254876080, now seen corresponding path program 1 times [2019-10-07 15:11:02,948 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:11:02,948 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:02,949 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:02,949 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:02,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:11:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:11:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-07 15:11:03,201 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:03,201 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:11:03,202 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:11:03,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:11:03,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:11:03,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:11:03,204 INFO L87 Difference]: Start difference. First operand 2176 states and 3159 transitions. Second operand 3 states. [2019-10-07 15:11:03,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:11:03,359 INFO L93 Difference]: Finished difference Result 5416 states and 8177 transitions. [2019-10-07 15:11:03,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:11:03,360 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 250 [2019-10-07 15:11:03,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:11:03,382 INFO L225 Difference]: With dead ends: 5416 [2019-10-07 15:11:03,382 INFO L226 Difference]: Without dead ends: 3298 [2019-10-07 15:11:03,394 INFO L606 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 [2019-10-07 15:11:03,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2019-10-07 15:11:03,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 3296. [2019-10-07 15:11:03,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3296 states. [2019-10-07 15:11:03,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3296 states to 3296 states and 5047 transitions. [2019-10-07 15:11:03,643 INFO L78 Accepts]: Start accepts. Automaton has 3296 states and 5047 transitions. Word has length 250 [2019-10-07 15:11:03,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:11:03,644 INFO L462 AbstractCegarLoop]: Abstraction has 3296 states and 5047 transitions. [2019-10-07 15:11:03,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:11:03,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3296 states and 5047 transitions. [2019-10-07 15:11:03,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2019-10-07 15:11:03,664 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:11:03,665 INFO L385 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:11:03,665 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:11:03,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:11:03,666 INFO L82 PathProgramCache]: Analyzing trace with hash -281901995, now seen corresponding path program 1 times [2019-10-07 15:11:03,666 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:11:03,666 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:03,666 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:03,666 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:11:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:11:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-07 15:11:03,858 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:03,858 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:11:03,858 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:11:03,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:11:03,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:11:03,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:11:03,860 INFO L87 Difference]: Start difference. First operand 3296 states and 5047 transitions. Second operand 3 states. [2019-10-07 15:11:04,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:11:04,083 INFO L93 Difference]: Finished difference Result 8680 states and 13681 transitions. [2019-10-07 15:11:04,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:11:04,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2019-10-07 15:11:04,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:11:04,120 INFO L225 Difference]: With dead ends: 8680 [2019-10-07 15:11:04,121 INFO L226 Difference]: Without dead ends: 5442 [2019-10-07 15:11:04,136 INFO L606 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 [2019-10-07 15:11:04,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5442 states. [2019-10-07 15:11:04,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5442 to 5440. [2019-10-07 15:11:04,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5440 states. [2019-10-07 15:11:04,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5440 states to 5440 states and 8631 transitions. [2019-10-07 15:11:04,522 INFO L78 Accepts]: Start accepts. Automaton has 5440 states and 8631 transitions. Word has length 251 [2019-10-07 15:11:04,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:11:04,523 INFO L462 AbstractCegarLoop]: Abstraction has 5440 states and 8631 transitions. [2019-10-07 15:11:04,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:11:04,523 INFO L276 IsEmpty]: Start isEmpty. Operand 5440 states and 8631 transitions. [2019-10-07 15:11:04,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-10-07 15:11:04,561 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:11:04,562 INFO L385 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:11:04,562 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:11:04,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:11:04,562 INFO L82 PathProgramCache]: Analyzing trace with hash 103615457, now seen corresponding path program 1 times [2019-10-07 15:11:04,563 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:11:04,563 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:04,563 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:04,563 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:04,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:11:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:11:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-07 15:11:04,742 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:04,742 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:11:04,743 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:11:04,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:11:04,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:11:04,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:11:04,744 INFO L87 Difference]: Start difference. First operand 5440 states and 8631 transitions. Second operand 3 states. [2019-10-07 15:11:05,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:11:05,273 INFO L93 Difference]: Finished difference Result 14920 states and 24113 transitions. [2019-10-07 15:11:05,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:11:05,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 247 [2019-10-07 15:11:05,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:11:05,342 INFO L225 Difference]: With dead ends: 14920 [2019-10-07 15:11:05,343 INFO L226 Difference]: Without dead ends: 9538 [2019-10-07 15:11:05,366 INFO L606 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 [2019-10-07 15:11:05,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9538 states. [2019-10-07 15:11:05,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9538 to 9536. [2019-10-07 15:11:05,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9536 states. [2019-10-07 15:11:05,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9536 states to 9536 states and 15415 transitions. [2019-10-07 15:11:05,879 INFO L78 Accepts]: Start accepts. Automaton has 9536 states and 15415 transitions. Word has length 247 [2019-10-07 15:11:05,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:11:05,880 INFO L462 AbstractCegarLoop]: Abstraction has 9536 states and 15415 transitions. [2019-10-07 15:11:05,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:11:05,880 INFO L276 IsEmpty]: Start isEmpty. Operand 9536 states and 15415 transitions. [2019-10-07 15:11:05,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2019-10-07 15:11:05,937 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:11:05,937 INFO L385 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:11:05,937 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:11:05,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:11:05,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1629168412, now seen corresponding path program 1 times [2019-10-07 15:11:05,938 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:11:05,938 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:05,938 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:05,939 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:05,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:11:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:11:06,516 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-07 15:11:06,516 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:06,517 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:11:06,517 INFO L95 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 [2019-10-07 15:11:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:11:07,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 3450 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 15:11:07,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:11:07,465 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-07 15:11:07,466 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:11:07,874 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-07 15:11:07,875 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 15:11:07,934 INFO L162 IcfgInterpreter]: Started Sifa with 199 locations of interest [2019-10-07 15:11:07,934 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 15:11:07,945 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 15:11:07,954 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 15:11:07,955 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 15:12:16,427 WARN L191 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 700 [2019-10-07 15:12:21,472 WARN L191 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 326 DAG size of output: 265 [2019-10-07 15:12:21,859 WARN L191 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 744 [2019-10-07 15:12:22,300 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 744 [2019-10-07 15:12:22,636 WARN L191 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 744 [2019-10-07 15:12:22,822 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 453 [2019-10-07 15:12:23,475 WARN L191 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 15:12:24,158 WARN L191 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 15:12:24,803 WARN L191 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 15:12:24,940 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 453 [2019-10-07 15:12:25,554 WARN L191 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 15:12:26,872 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1046 DAG size of output: 1044 [2019-10-07 15:12:27,482 WARN L191 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 15:12:27,631 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 453 [2019-10-07 15:12:28,267 WARN L191 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 15:12:28,906 WARN L191 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 15:12:29,531 WARN L191 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 15:12:29,655 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 453 [2019-10-07 15:12:30,267 WARN L191 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 15:12:30,292 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 568 for LOIs [2019-10-07 15:12:30,680 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 665 [2019-10-07 15:12:30,788 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 665 [2019-10-07 15:12:30,913 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 453 [2019-10-07 15:12:31,377 WARN L191 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 965 [2019-10-07 15:12:31,379 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1100 for LOIs [2019-10-07 15:12:32,044 WARN L191 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:32,658 WARN L191 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:32,896 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:12:33,886 WARN L191 SmtUtils]: Spent 987.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:12:34,523 WARN L191 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:35,166 WARN L191 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:35,402 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:12:36,407 WARN L191 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:12:37,181 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:37,789 WARN L191 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:38,039 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:12:39,006 WARN L191 SmtUtils]: Spent 966.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:12:40,098 WARN L191 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 1286 DAG size of output: 1100 [2019-10-07 15:12:40,719 WARN L191 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:41,129 WARN L191 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:12:42,114 WARN L191 SmtUtils]: Spent 983.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:12:42,744 WARN L191 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:43,354 WARN L191 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:43,586 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:12:44,594 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:12:45,219 WARN L191 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:45,820 WARN L191 SmtUtils]: Spent 598.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:46,058 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:12:47,031 WARN L191 SmtUtils]: Spent 970.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:12:47,645 WARN L191 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:48,258 WARN L191 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:48,533 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:12:49,500 WARN L191 SmtUtils]: Spent 965.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:12:50,113 WARN L191 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:50,721 WARN L191 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:50,956 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:12:51,952 WARN L191 SmtUtils]: Spent 993.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:12:52,560 WARN L191 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:53,180 WARN L191 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:53,419 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:12:54,417 WARN L191 SmtUtils]: Spent 996.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:12:55,020 WARN L191 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:55,644 WARN L191 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:55,884 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:12:56,851 WARN L191 SmtUtils]: Spent 964.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:12:57,469 WARN L191 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:58,075 WARN L191 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:12:58,315 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:12:59,287 WARN L191 SmtUtils]: Spent 970.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:12:59,909 WARN L191 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:13:00,537 WARN L191 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:13:00,775 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:13:01,751 WARN L191 SmtUtils]: Spent 974.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:02,369 WARN L191 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:13:02,979 WARN L191 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 15:13:03,220 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:13:04,193 WARN L191 SmtUtils]: Spent 971.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:05,235 WARN L191 SmtUtils]: Spent 999.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:06,259 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:06,502 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:13:07,501 WARN L191 SmtUtils]: Spent 997.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:09,398 WARN L191 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 1286 DAG size of output: 1284 [2019-10-07 15:13:10,410 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:10,675 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:13:11,654 WARN L191 SmtUtils]: Spent 976.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:12,655 WARN L191 SmtUtils]: Spent 997.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:13,628 WARN L191 SmtUtils]: Spent 969.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:13,874 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:13:14,883 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:15,969 WARN L191 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 1288 [2019-10-07 15:13:16,951 WARN L191 SmtUtils]: Spent 977.00 ms on a formula simplification that was a NOOP. DAG size: 1288 [2019-10-07 15:13:17,197 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 636 [2019-10-07 15:13:18,210 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 1288 [2019-10-07 15:13:20,258 WARN L191 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 1290 DAG size of output: 1286 [2019-10-07 15:13:21,255 WARN L191 SmtUtils]: Spent 992.00 ms on a formula simplification that was a NOOP. DAG size: 1286 [2019-10-07 15:13:21,504 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 636 [2019-10-07 15:13:22,530 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 1288 [2019-10-07 15:13:24,334 WARN L191 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 1290 DAG size of output: 1286 [2019-10-07 15:13:25,352 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 1286 [2019-10-07 15:13:25,598 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 636 [2019-10-07 15:13:26,612 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 1288 [2019-10-07 15:13:27,658 WARN L191 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 1293 [2019-10-07 15:13:28,678 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 1293 [2019-10-07 15:13:28,934 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 636 [2019-10-07 15:13:29,929 WARN L191 SmtUtils]: Spent 993.00 ms on a formula simplification that was a NOOP. DAG size: 1293 [2019-10-07 15:13:30,955 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 1295 [2019-10-07 15:13:31,959 WARN L191 SmtUtils]: Spent 999.00 ms on a formula simplification that was a NOOP. DAG size: 1295 [2019-10-07 15:13:32,207 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 636 [2019-10-07 15:13:33,215 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 1295 [2019-10-07 15:13:35,256 WARN L191 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 1286 DAG size of output: 1284 [2019-10-07 15:13:36,277 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:36,549 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:13:37,564 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:39,425 WARN L191 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 1286 DAG size of output: 1284 [2019-10-07 15:13:40,426 WARN L191 SmtUtils]: Spent 996.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:40,670 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:13:41,674 WARN L191 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:42,661 WARN L191 SmtUtils]: Spent 983.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:43,649 WARN L191 SmtUtils]: Spent 984.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:43,894 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:13:44,870 WARN L191 SmtUtils]: Spent 974.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:46,965 WARN L191 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 1286 DAG size of output: 1284 [2019-10-07 15:13:47,980 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:48,222 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:13:49,230 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:51,017 WARN L191 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 1286 DAG size of output: 1284 [2019-10-07 15:13:52,025 WARN L191 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:52,276 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:13:53,280 WARN L191 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:54,269 WARN L191 SmtUtils]: Spent 986.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:55,247 WARN L191 SmtUtils]: Spent 973.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:55,488 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 633 [2019-10-07 15:13:56,465 WARN L191 SmtUtils]: Spent 974.00 ms on a formula simplification that was a NOOP. DAG size: 1284 [2019-10-07 15:13:57,484 WARN L191 SmtUtils]: Spent 981.00 ms on a formula simplification that was a NOOP. DAG size: 1288 [2019-10-07 15:13:58,488 WARN L191 SmtUtils]: Spent 1000.00 ms on a formula simplification that was a NOOP. DAG size: 1288 [2019-10-07 15:13:58,730 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 636 [2019-10-07 15:13:59,737 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 1288 [2019-10-07 15:14:00,724 WARN L191 SmtUtils]: Spent 971.00 ms on a formula simplification that was a NOOP. DAG size: 1288 [2019-10-07 15:14:01,740 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 1288 [2019-10-07 15:14:01,991 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 636 [2019-10-07 15:14:02,993 WARN L191 SmtUtils]: Spent 1000.00 ms on a formula simplification that was a NOOP. DAG size: 1288 [2019-10-07 15:14:03,989 WARN L191 SmtUtils]: Spent 993.00 ms on a formula simplification that was a NOOP. DAG size: 1288 [2019-10-07 15:14:04,973 WARN L191 SmtUtils]: Spent 979.00 ms on a formula simplification that was a NOOP. DAG size: 1288 [2019-10-07 15:14:05,216 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 636 [2019-10-07 15:14:06,223 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 1288 [2019-10-07 15:14:08,075 WARN L191 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 1295 DAG size of output: 1293 [2019-10-07 15:14:09,095 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 1293 [2019-10-07 15:14:09,502 WARN L191 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 636 [2019-10-07 15:14:10,488 WARN L191 SmtUtils]: Spent 985.00 ms on a formula simplification that was a NOOP. DAG size: 1293 [2019-10-07 15:14:12,278 WARN L191 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 1297 DAG size of output: 1295 [2019-10-07 15:14:13,272 WARN L191 SmtUtils]: Spent 990.00 ms on a formula simplification that was a NOOP. DAG size: 1295 [2019-10-07 15:14:13,522 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 636 [2019-10-07 15:14:14,507 WARN L191 SmtUtils]: Spent 982.00 ms on a formula simplification that was a NOOP. DAG size: 1295 [2019-10-07 15:14:14,774 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:14:14,775 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 15:14:14,783 INFO L168 Benchmark]: Toolchain (without parser) took 208820.97 ms. Allocated memory was 145.8 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 99.8 MB in the beginning and 273.6 MB in the end (delta: -173.8 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2019-10-07 15:14:14,783 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-07 15:14:14,784 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1222.46 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 99.6 MB in the beginning and 137.2 MB in the end (delta: -37.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2019-10-07 15:14:14,784 INFO L168 Benchmark]: Boogie Preprocessor took 228.53 ms. Allocated memory is still 203.4 MB. Free memory was 137.2 MB in the beginning and 128.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2019-10-07 15:14:14,785 INFO L168 Benchmark]: RCFGBuilder took 5208.27 ms. Allocated memory was 203.4 MB in the beginning and 290.5 MB in the end (delta: 87.0 MB). Free memory was 128.2 MB in the beginning and 81.4 MB in the end (delta: 46.8 MB). Peak memory consumption was 133.8 MB. Max. memory is 7.1 GB. [2019-10-07 15:14:14,786 INFO L168 Benchmark]: TraceAbstraction took 202157.08 ms. Allocated memory was 290.5 MB in the beginning and 2.1 GB in the end (delta: 1.8 GB). Free memory was 81.4 MB in the beginning and 273.6 MB in the end (delta: -192.2 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2019-10-07 15:14:14,789 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1222.46 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 99.6 MB in the beginning and 137.2 MB in the end (delta: -37.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 228.53 ms. Allocated memory is still 203.4 MB. Free memory was 137.2 MB in the beginning and 128.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5208.27 ms. Allocated memory was 203.4 MB in the beginning and 290.5 MB in the end (delta: 87.0 MB). Free memory was 128.2 MB in the beginning and 81.4 MB in the end (delta: 46.8 MB). Peak memory consumption was 133.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202157.08 ms. Allocated memory was 290.5 MB in the beginning and 2.1 GB in the end (delta: 1.8 GB). Free memory was 81.4 MB in the beginning and 273.6 MB in the end (delta: -192.2 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...