java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:14:49,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:14:49,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:14:49,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:14:49,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:14:49,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:14:49,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:14:49,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:14:49,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:14:49,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:14:49,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:14:49,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:14:49,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:14:49,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:14:50,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:14:50,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:14:50,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:14:50,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:14:50,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:14:50,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:14:50,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:14:50,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:14:50,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:14:50,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:14:50,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:14:50,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:14:50,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:14:50,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:14:50,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:14:50,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:14:50,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:14:50,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:14:50,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:14:50,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:14:50,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:14:50,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:14:50,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:14:50,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:14:50,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:14:50,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:14:50,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:14:50,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:14:50,053 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:14:50,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:14:50,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:14:50,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:14:50,055 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:14:50,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:14:50,057 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:14:50,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:14:50,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:14:50,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:14:50,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:14:50,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:14:50,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:14:50,060 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:14:50,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:14:50,060 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:14:50,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:14:50,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:14:50,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:14:50,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:14:50,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:14:50,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:50,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:14:50,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:14:50,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:14:50,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:14:50,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:14:50,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:14:50,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:14:50,321 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:14:50,334 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:14:50,338 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:14:50,339 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:14:50,340 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:14:50,340 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product24.cil.c [2019-10-13 21:14:50,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ede87185/725bf15d44ae4968bf0785ee09382a28/FLAG040889b3e [2019-10-13 21:14:51,014 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:14:51,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product24.cil.c [2019-10-13 21:14:51,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ede87185/725bf15d44ae4968bf0785ee09382a28/FLAG040889b3e [2019-10-13 21:14:51,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ede87185/725bf15d44ae4968bf0785ee09382a28 [2019-10-13 21:14:51,226 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:14:51,228 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:14:51,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:51,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:14:51,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:14:51,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:51" (1/1) ... [2019-10-13 21:14:51,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1260a1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:51, skipping insertion in model container [2019-10-13 21:14:51,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:51" (1/1) ... [2019-10-13 21:14:51,244 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:14:51,329 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:14:52,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:52,196 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:14:52,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:52,451 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:14:52,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:52 WrapperNode [2019-10-13 21:14:52,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:52,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:14:52,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:14:52,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:14:52,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:52" (1/1) ... [2019-10-13 21:14:52,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:52" (1/1) ... [2019-10-13 21:14:52,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:52" (1/1) ... [2019-10-13 21:14:52,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:52" (1/1) ... [2019-10-13 21:14:52,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:52" (1/1) ... [2019-10-13 21:14:52,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:52" (1/1) ... [2019-10-13 21:14:52,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:52" (1/1) ... [2019-10-13 21:14:52,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:14:52,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:14:52,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:14:52,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:14:52,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:14:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:14:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-13 21:14:52,672 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:14:52,672 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:14:52,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:14:52,672 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:14:52,672 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:14:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:14:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:14:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:14:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:14:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:14:52,674 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:14:52,674 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:14:52,674 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:14:52,674 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:14:52,675 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:14:52,675 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:14:52,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:14:52,675 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:14:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:14:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:14:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:14:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:14:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:14:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:14:52,677 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:14:52,677 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:14:52,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:14:52,677 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:14:52,677 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:14:52,677 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:14:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:14:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:14:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:14:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:14:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:14:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:14:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:14:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:14:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:14:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:14:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:14:52,680 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:14:52,680 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:14:52,680 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:14:52,680 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:14:52,680 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:14:52,680 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:14:52,681 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:14:52,681 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:14:52,681 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:14:52,681 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:14:52,681 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:14:52,682 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:14:52,682 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:14:52,682 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:14:52,682 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:14:52,682 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:14:52,682 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:14:52,683 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:14:52,683 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:14:52,683 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:14:52,683 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-13 21:14:52,683 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:14:52,684 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:14:52,684 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:14:52,684 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:14:52,684 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:14:52,684 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:14:52,684 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:14:52,685 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:14:52,685 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:14:52,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:14:52,685 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:14:52,685 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:14:52,685 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:14:52,686 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:14:52,686 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:14:52,686 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:14:52,686 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:14:52,686 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:14:52,686 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:52,687 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:14:52,687 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:52,687 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:14:52,687 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:14:52,687 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:14:52,687 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:14:52,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:14:52,688 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:14:52,688 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:14:52,688 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:14:52,688 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:14:52,688 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:14:52,689 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:14:52,689 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:14:52,689 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:14:52,689 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:14:52,689 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:14:52,689 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:14:52,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:52,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:52,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:52,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:14:52,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:14:52,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:14:52,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:14:52,691 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:14:52,691 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:14:52,691 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:14:52,691 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:14:52,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:14:52,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:14:52,691 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:14:52,692 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:14:52,692 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:14:52,692 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:14:52,692 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:14:52,692 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:14:52,692 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:14:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:14:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:14:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:14:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:14:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:14:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:14:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-13 21:14:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:14:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:14:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:14:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:14:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:14:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:14:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:14:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:14:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:14:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:14:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:14:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:14:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:14:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:14:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:14:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:14:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:14:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:14:52,697 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:14:52,697 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:14:52,697 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:14:52,697 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:14:52,697 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:14:52,697 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:14:52,697 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:14:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:14:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:14:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:14:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:14:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:14:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:14:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:14:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:14:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:14:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:14:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:14:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:14:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:14:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:14:52,700 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:14:52,700 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:14:52,700 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:14:52,700 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:14:52,700 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:14:52,700 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:14:52,700 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:14:52,700 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:14:52,701 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:14:52,701 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:14:52,701 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:14:52,701 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:14:52,701 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:14:52,701 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:14:52,702 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:14:52,702 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:14:52,702 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:14:52,702 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:14:52,702 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:14:52,702 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:14:52,702 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:14:52,702 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:14:52,703 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:14:52,703 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:14:52,703 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:14:52,703 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:14:52,703 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-13 21:14:52,703 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:14:52,703 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:14:52,704 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:14:52,704 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:14:52,704 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:14:52,704 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:14:52,704 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:14:52,704 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:14:52,704 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:14:52,705 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:14:52,705 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:14:52,705 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:14:52,705 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:14:52,705 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:14:52,705 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:14:52,705 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:14:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:14:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:14:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:14:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:14:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:14:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:14:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:14:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:14:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:14:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:14:52,707 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:14:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:14:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:14:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:14:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:14:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:14:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:14:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:14:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:14:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:14:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:14:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:14:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:14:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:14:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:14:54,895 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:14:54,896 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:14:54,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:54 BoogieIcfgContainer [2019-10-13 21:14:54,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:14:54,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:14:54,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:14:54,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:14:54,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:14:51" (1/3) ... [2019-10-13 21:14:54,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fb5207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:54, skipping insertion in model container [2019-10-13 21:14:54,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:52" (2/3) ... [2019-10-13 21:14:54,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fb5207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:54, skipping insertion in model container [2019-10-13 21:14:54,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:54" (3/3) ... [2019-10-13 21:14:54,907 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product24.cil.c [2019-10-13 21:14:54,918 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:14:54,932 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:14:54,945 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:14:54,993 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:14:54,993 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:14:54,993 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:14:54,994 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:14:54,994 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:14:54,994 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:14:54,996 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:14:54,996 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:14:55,037 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states. [2019-10-13 21:14:55,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-13 21:14:55,072 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:55,074 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:55,077 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:55,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:55,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1375870592, now seen corresponding path program 1 times [2019-10-13 21:14:55,100 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:55,100 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853987802] [2019-10-13 21:14:55,101 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:55,101 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:55,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:55,839 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:55,840 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853987802] [2019-10-13 21:14:55,841 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:55,841 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:14:55,841 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396269740] [2019-10-13 21:14:55,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:14:55,850 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:55,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:14:55,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:14:55,868 INFO L87 Difference]: Start difference. First operand 528 states. Second operand 2 states. [2019-10-13 21:14:55,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:55,971 INFO L93 Difference]: Finished difference Result 787 states and 1034 transitions. [2019-10-13 21:14:55,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:14:55,974 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 181 [2019-10-13 21:14:55,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:56,024 INFO L225 Difference]: With dead ends: 787 [2019-10-13 21:14:56,024 INFO L226 Difference]: Without dead ends: 505 [2019-10-13 21:14:56,035 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:14:56,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2019-10-13 21:14:56,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2019-10-13 21:14:56,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2019-10-13 21:14:56,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 666 transitions. [2019-10-13 21:14:56,175 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 666 transitions. Word has length 181 [2019-10-13 21:14:56,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:56,179 INFO L462 AbstractCegarLoop]: Abstraction has 505 states and 666 transitions. [2019-10-13 21:14:56,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:14:56,179 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 666 transitions. [2019-10-13 21:14:56,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-13 21:14:56,192 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:56,192 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:56,192 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:56,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:56,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1672836718, now seen corresponding path program 1 times [2019-10-13 21:14:56,194 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:56,194 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714617341] [2019-10-13 21:14:56,194 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:56,195 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:56,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:56,491 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714617341] [2019-10-13 21:14:56,492 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:56,492 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:56,492 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642958747] [2019-10-13 21:14:56,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:56,499 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:56,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:56,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:56,500 INFO L87 Difference]: Start difference. First operand 505 states and 666 transitions. Second operand 3 states. [2019-10-13 21:14:56,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:56,650 INFO L93 Difference]: Finished difference Result 770 states and 998 transitions. [2019-10-13 21:14:56,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:56,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2019-10-13 21:14:56,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:56,657 INFO L225 Difference]: With dead ends: 770 [2019-10-13 21:14:56,657 INFO L226 Difference]: Without dead ends: 508 [2019-10-13 21:14:56,662 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:56,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2019-10-13 21:14:56,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2019-10-13 21:14:56,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2019-10-13 21:14:56,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 668 transitions. [2019-10-13 21:14:56,716 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 668 transitions. Word has length 182 [2019-10-13 21:14:56,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:56,719 INFO L462 AbstractCegarLoop]: Abstraction has 507 states and 668 transitions. [2019-10-13 21:14:56,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:56,719 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 668 transitions. [2019-10-13 21:14:56,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-13 21:14:56,724 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:56,724 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:56,724 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:56,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:56,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1352158941, now seen corresponding path program 1 times [2019-10-13 21:14:56,725 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:56,725 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818404436] [2019-10-13 21:14:56,725 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:56,726 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:56,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:56,941 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:56,942 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818404436] [2019-10-13 21:14:56,942 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:56,943 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:56,943 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636013341] [2019-10-13 21:14:56,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:56,948 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:56,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:56,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:56,949 INFO L87 Difference]: Start difference. First operand 507 states and 668 transitions. Second operand 3 states. [2019-10-13 21:14:57,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:57,005 INFO L93 Difference]: Finished difference Result 992 states and 1337 transitions. [2019-10-13 21:14:57,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:57,006 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2019-10-13 21:14:57,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:57,017 INFO L225 Difference]: With dead ends: 992 [2019-10-13 21:14:57,017 INFO L226 Difference]: Without dead ends: 550 [2019-10-13 21:14:57,020 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:57,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2019-10-13 21:14:57,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 549. [2019-10-13 21:14:57,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2019-10-13 21:14:57,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 740 transitions. [2019-10-13 21:14:57,064 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 740 transitions. Word has length 194 [2019-10-13 21:14:57,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:57,065 INFO L462 AbstractCegarLoop]: Abstraction has 549 states and 740 transitions. [2019-10-13 21:14:57,065 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:57,065 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 740 transitions. [2019-10-13 21:14:57,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-13 21:14:57,077 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:57,078 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:57,078 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:57,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:57,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1151159217, now seen corresponding path program 1 times [2019-10-13 21:14:57,079 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:57,079 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449223225] [2019-10-13 21:14:57,081 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:57,081 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:57,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:57,343 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:57,344 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449223225] [2019-10-13 21:14:57,345 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:57,347 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:57,348 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005490524] [2019-10-13 21:14:57,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:57,349 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:57,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:57,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:57,349 INFO L87 Difference]: Start difference. First operand 549 states and 740 transitions. Second operand 3 states. [2019-10-13 21:14:57,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:57,390 INFO L93 Difference]: Finished difference Result 1115 states and 1548 transitions. [2019-10-13 21:14:57,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:57,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2019-10-13 21:14:57,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:57,398 INFO L225 Difference]: With dead ends: 1115 [2019-10-13 21:14:57,398 INFO L226 Difference]: Without dead ends: 631 [2019-10-13 21:14:57,400 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:57,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-10-13 21:14:57,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 630. [2019-10-13 21:14:57,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-10-13 21:14:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 878 transitions. [2019-10-13 21:14:57,434 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 878 transitions. Word has length 195 [2019-10-13 21:14:57,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:57,436 INFO L462 AbstractCegarLoop]: Abstraction has 630 states and 878 transitions. [2019-10-13 21:14:57,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:57,436 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 878 transitions. [2019-10-13 21:14:57,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-10-13 21:14:57,440 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:57,441 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:57,441 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:57,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:57,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1181294748, now seen corresponding path program 1 times [2019-10-13 21:14:57,442 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:57,442 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048144065] [2019-10-13 21:14:57,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:57,443 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:57,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:57,668 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:14:57,668 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048144065] [2019-10-13 21:14:57,669 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:57,669 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:14:57,669 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800267434] [2019-10-13 21:14:57,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:14:57,670 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:57,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:14:57,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:14:57,671 INFO L87 Difference]: Start difference. First operand 630 states and 878 transitions. Second operand 8 states. [2019-10-13 21:14:57,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:57,736 INFO L93 Difference]: Finished difference Result 879 states and 1195 transitions. [2019-10-13 21:14:57,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:14:57,737 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 198 [2019-10-13 21:14:57,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:57,745 INFO L225 Difference]: With dead ends: 879 [2019-10-13 21:14:57,746 INFO L226 Difference]: Without dead ends: 630 [2019-10-13 21:14:57,747 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:14:57,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2019-10-13 21:14:57,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2019-10-13 21:14:57,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-10-13 21:14:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 877 transitions. [2019-10-13 21:14:57,791 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 877 transitions. Word has length 198 [2019-10-13 21:14:57,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:57,793 INFO L462 AbstractCegarLoop]: Abstraction has 630 states and 877 transitions. [2019-10-13 21:14:57,793 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:14:57,793 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 877 transitions. [2019-10-13 21:14:57,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-13 21:14:57,797 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:57,797 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:57,798 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:57,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:57,798 INFO L82 PathProgramCache]: Analyzing trace with hash -183350682, now seen corresponding path program 1 times [2019-10-13 21:14:57,798 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:57,799 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105266606] [2019-10-13 21:14:57,799 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:57,799 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:57,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:14:58,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105266606] [2019-10-13 21:14:58,177 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:58,177 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:14:58,177 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139200607] [2019-10-13 21:14:58,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:14:58,178 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:58,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:14:58,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:14:58,179 INFO L87 Difference]: Start difference. First operand 630 states and 877 transitions. Second operand 7 states. [2019-10-13 21:15:00,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:00,816 INFO L93 Difference]: Finished difference Result 1151 states and 1540 transitions. [2019-10-13 21:15:00,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:15:00,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2019-10-13 21:15:00,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:00,822 INFO L225 Difference]: With dead ends: 1151 [2019-10-13 21:15:00,822 INFO L226 Difference]: Without dead ends: 894 [2019-10-13 21:15:00,824 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:15:00,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2019-10-13 21:15:00,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 885. [2019-10-13 21:15:00,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2019-10-13 21:15:00,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1199 transitions. [2019-10-13 21:15:00,867 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1199 transitions. Word has length 205 [2019-10-13 21:15:00,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:00,868 INFO L462 AbstractCegarLoop]: Abstraction has 885 states and 1199 transitions. [2019-10-13 21:15:00,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:00,868 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1199 transitions. [2019-10-13 21:15:00,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-10-13 21:15:00,872 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:00,872 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:00,873 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:00,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:00,873 INFO L82 PathProgramCache]: Analyzing trace with hash -603889462, now seen corresponding path program 1 times [2019-10-13 21:15:00,873 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:00,874 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984246743] [2019-10-13 21:15:00,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:00,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:00,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:15:01,358 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984246743] [2019-10-13 21:15:01,359 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:01,359 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-13 21:15:01,359 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106626304] [2019-10-13 21:15:01,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 21:15:01,360 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:01,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 21:15:01,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2019-10-13 21:15:01,361 INFO L87 Difference]: Start difference. First operand 885 states and 1199 transitions. Second operand 26 states. [2019-10-13 21:15:02,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:02,278 INFO L93 Difference]: Finished difference Result 1495 states and 1984 transitions. [2019-10-13 21:15:02,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-13 21:15:02,279 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 206 [2019-10-13 21:15:02,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:02,285 INFO L225 Difference]: With dead ends: 1495 [2019-10-13 21:15:02,285 INFO L226 Difference]: Without dead ends: 933 [2019-10-13 21:15:02,288 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:15:02,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2019-10-13 21:15:02,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 929. [2019-10-13 21:15:02,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2019-10-13 21:15:02,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1251 transitions. [2019-10-13 21:15:02,337 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1251 transitions. Word has length 206 [2019-10-13 21:15:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:02,341 INFO L462 AbstractCegarLoop]: Abstraction has 929 states and 1251 transitions. [2019-10-13 21:15:02,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 21:15:02,342 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1251 transitions. [2019-10-13 21:15:02,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-13 21:15:02,348 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:02,349 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:02,349 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:02,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:02,350 INFO L82 PathProgramCache]: Analyzing trace with hash 525734107, now seen corresponding path program 1 times [2019-10-13 21:15:02,350 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:02,350 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208955367] [2019-10-13 21:15:02,350 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,350 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:02,616 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:15:02,617 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208955367] [2019-10-13 21:15:02,617 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:02,617 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:15:02,617 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775716497] [2019-10-13 21:15:02,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:15:02,618 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:02,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:15:02,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:15:02,619 INFO L87 Difference]: Start difference. First operand 929 states and 1251 transitions. Second operand 8 states. [2019-10-13 21:15:07,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:07,380 INFO L93 Difference]: Finished difference Result 2613 states and 3397 transitions. [2019-10-13 21:15:07,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:15:07,382 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 237 [2019-10-13 21:15:07,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:07,395 INFO L225 Difference]: With dead ends: 2613 [2019-10-13 21:15:07,395 INFO L226 Difference]: Without dead ends: 2079 [2019-10-13 21:15:07,399 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:15:07,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2019-10-13 21:15:07,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 2065. [2019-10-13 21:15:07,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2065 states. [2019-10-13 21:15:07,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2707 transitions. [2019-10-13 21:15:07,502 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2707 transitions. Word has length 237 [2019-10-13 21:15:07,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:07,503 INFO L462 AbstractCegarLoop]: Abstraction has 2065 states and 2707 transitions. [2019-10-13 21:15:07,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:15:07,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2707 transitions. [2019-10-13 21:15:07,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-10-13 21:15:07,509 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:07,509 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:07,509 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:07,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:07,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1095480358, now seen corresponding path program 1 times [2019-10-13 21:15:07,510 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:07,510 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161426719] [2019-10-13 21:15:07,510 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:07,511 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:07,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:07,884 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:15:07,884 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161426719] [2019-10-13 21:15:07,886 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:07,886 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-13 21:15:07,887 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983691108] [2019-10-13 21:15:07,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 21:15:07,888 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:07,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 21:15:07,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:15:07,889 INFO L87 Difference]: Start difference. First operand 2065 states and 2707 transitions. Second operand 18 states. [2019-10-13 21:15:08,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:08,259 INFO L93 Difference]: Finished difference Result 2787 states and 3624 transitions. [2019-10-13 21:15:08,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 21:15:08,260 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 238 [2019-10-13 21:15:08,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:08,269 INFO L225 Difference]: With dead ends: 2787 [2019-10-13 21:15:08,269 INFO L226 Difference]: Without dead ends: 1548 [2019-10-13 21:15:08,273 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:15:08,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2019-10-13 21:15:08,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1542. [2019-10-13 21:15:08,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-10-13 21:15:08,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2049 transitions. [2019-10-13 21:15:08,342 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2049 transitions. Word has length 238 [2019-10-13 21:15:08,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:08,343 INFO L462 AbstractCegarLoop]: Abstraction has 1542 states and 2049 transitions. [2019-10-13 21:15:08,343 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 21:15:08,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2049 transitions. [2019-10-13 21:15:08,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-10-13 21:15:08,349 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:08,349 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:08,350 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:08,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:08,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1647463807, now seen corresponding path program 1 times [2019-10-13 21:15:08,350 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:08,351 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990054680] [2019-10-13 21:15:08,351 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:08,351 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:08,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:08,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990054680] [2019-10-13 21:15:08,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841764694] [2019-10-13 21:15:08,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:09,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 2840 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:09,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:09,457 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:15:09,457 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:09,889 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:09,963 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:10,027 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:10,145 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:10,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-13 21:15:10,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963408043] [2019-10-13 21:15:10,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:15:10,146 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:10,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:15:10,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:15:10,147 INFO L87 Difference]: Start difference. First operand 1542 states and 2049 transitions. Second operand 9 states. [2019-10-13 21:15:11,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:11,633 INFO L93 Difference]: Finished difference Result 3062 states and 4078 transitions. [2019-10-13 21:15:11,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:15:11,634 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 247 [2019-10-13 21:15:11,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:11,644 INFO L225 Difference]: With dead ends: 3062 [2019-10-13 21:15:11,645 INFO L226 Difference]: Without dead ends: 1556 [2019-10-13 21:15:11,649 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 480 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:15:11,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2019-10-13 21:15:11,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1556. [2019-10-13 21:15:11,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2019-10-13 21:15:11,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2067 transitions. [2019-10-13 21:15:11,725 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2067 transitions. Word has length 247 [2019-10-13 21:15:11,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:11,725 INFO L462 AbstractCegarLoop]: Abstraction has 1556 states and 2067 transitions. [2019-10-13 21:15:11,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:15:11,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2067 transitions. [2019-10-13 21:15:11,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2019-10-13 21:15:11,731 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:11,732 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:11,949 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:11,949 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:11,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:11,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1526768802, now seen corresponding path program 1 times [2019-10-13 21:15:11,950 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:11,951 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499641285] [2019-10-13 21:15:11,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:11,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:11,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:12,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499641285] [2019-10-13 21:15:12,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971507489] [2019-10-13 21:15:12,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:12,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 2841 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:12,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:13,015 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:15:13,016 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:13,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:13,431 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:13,488 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:13,489 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:13,489 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:15:13,489 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050024057] [2019-10-13 21:15:13,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:13,490 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:13,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:13,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:15:13,491 INFO L87 Difference]: Start difference. First operand 1556 states and 2067 transitions. Second operand 7 states. [2019-10-13 21:15:14,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:14,704 INFO L93 Difference]: Finished difference Result 3063 states and 4084 transitions. [2019-10-13 21:15:14,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:14,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2019-10-13 21:15:14,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:14,714 INFO L225 Difference]: With dead ends: 3063 [2019-10-13 21:15:14,714 INFO L226 Difference]: Without dead ends: 1558 [2019-10-13 21:15:14,720 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 487 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:15:14,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2019-10-13 21:15:14,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1558. [2019-10-13 21:15:14,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2019-10-13 21:15:14,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2070 transitions. [2019-10-13 21:15:14,789 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2070 transitions. Word has length 248 [2019-10-13 21:15:14,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:14,790 INFO L462 AbstractCegarLoop]: Abstraction has 1558 states and 2070 transitions. [2019-10-13 21:15:14,790 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:14,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2070 transitions. [2019-10-13 21:15:14,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2019-10-13 21:15:14,798 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:14,798 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:15,013 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:15,014 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:15,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:15,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1220095109, now seen corresponding path program 1 times [2019-10-13 21:15:15,014 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:15,015 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952013931] [2019-10-13 21:15:15,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:15,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:15,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:15,214 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:15,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952013931] [2019-10-13 21:15:15,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281445692] [2019-10-13 21:15:15,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:15,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:15,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:15,965 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:16,323 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:16,401 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:16,479 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:16,608 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:16,609 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:16,609 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-13 21:15:16,609 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306782553] [2019-10-13 21:15:16,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:16,611 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:16,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:16,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:15:16,612 INFO L87 Difference]: Start difference. First operand 1558 states and 2070 transitions. Second operand 16 states. [2019-10-13 21:15:18,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:18,815 INFO L93 Difference]: Finished difference Result 3067 states and 4082 transitions. [2019-10-13 21:15:18,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:18,816 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 249 [2019-10-13 21:15:18,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:18,825 INFO L225 Difference]: With dead ends: 3067 [2019-10-13 21:15:18,825 INFO L226 Difference]: Without dead ends: 1570 [2019-10-13 21:15:18,831 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 484 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:15:18,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2019-10-13 21:15:18,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1568. [2019-10-13 21:15:18,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2019-10-13 21:15:18,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2081 transitions. [2019-10-13 21:15:18,964 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2081 transitions. Word has length 249 [2019-10-13 21:15:18,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:18,965 INFO L462 AbstractCegarLoop]: Abstraction has 1568 states and 2081 transitions. [2019-10-13 21:15:18,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:15:18,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2081 transitions. [2019-10-13 21:15:18,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-13 21:15:18,973 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:18,974 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:19,181 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:19,182 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:19,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:19,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1265960894, now seen corresponding path program 2 times [2019-10-13 21:15:19,183 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:19,183 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83095017] [2019-10-13 21:15:19,183 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:19,183 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:19,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:19,679 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83095017] [2019-10-13 21:15:19,679 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169196299] [2019-10-13 21:15:19,679 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:20,305 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:15:20,305 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:20,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 2737 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:20,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:20,547 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:20,547 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:20,946 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:21,028 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:15:21,123 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:21,123 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [29] total 39 [2019-10-13 21:15:21,123 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384228966] [2019-10-13 21:15:21,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:15:21,125 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:21,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:15:21,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1385, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:15:21,126 INFO L87 Difference]: Start difference. First operand 1568 states and 2081 transitions. Second operand 12 states. [2019-10-13 21:15:22,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:22,491 INFO L93 Difference]: Finished difference Result 3058 states and 4070 transitions. [2019-10-13 21:15:22,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:15:22,492 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 250 [2019-10-13 21:15:22,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:22,500 INFO L225 Difference]: With dead ends: 3058 [2019-10-13 21:15:22,500 INFO L226 Difference]: Without dead ends: 1570 [2019-10-13 21:15:22,506 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 502 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2019-10-13 21:15:22,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2019-10-13 21:15:22,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1568. [2019-10-13 21:15:22,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2019-10-13 21:15:22,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2080 transitions. [2019-10-13 21:15:22,574 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2080 transitions. Word has length 250 [2019-10-13 21:15:22,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:22,575 INFO L462 AbstractCegarLoop]: Abstraction has 1568 states and 2080 transitions. [2019-10-13 21:15:22,575 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:15:22,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2080 transitions. [2019-10-13 21:15:22,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2019-10-13 21:15:22,582 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:22,582 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:22,793 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:22,793 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:22,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:22,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1472341811, now seen corresponding path program 3 times [2019-10-13 21:15:22,794 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:22,794 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654870452] [2019-10-13 21:15:22,794 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,794 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:15:23,347 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654870452] [2019-10-13 21:15:23,347 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751013847] [2019-10-13 21:15:23,347 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:23,942 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:15:23,942 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:23,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 2252 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:23,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:24,363 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:24,364 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:24,863 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms