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_spec9_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:18:57,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:18:57,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:18:57,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:18:57,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:18:57,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:18:57,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:18:57,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:18:57,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:18:57,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:18:57,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:18:57,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:18:57,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:18:57,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:18:57,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:18:57,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:18:57,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:18:57,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:18:57,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:18:57,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:18:57,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:18:57,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:18:57,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:18:57,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:18:57,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:18:57,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:18:57,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:18:57,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:18:57,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:18:57,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:18:57,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:18:57,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:18:57,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:18:57,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:18:57,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:18:57,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:18:57,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:18:57,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:18:57,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:18:57,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:18:57,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:18:57,210 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:18:57,226 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:18:57,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:18:57,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:18:57,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:18:57,228 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:18:57,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:18:57,228 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:18:57,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:18:57,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:18:57,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:18:57,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:18:57,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:18:57,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:18:57,230 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:18:57,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:18:57,230 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:18:57,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:18:57,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:18:57,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:18:57,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:18:57,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:18:57,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:57,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:18:57,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:18:57,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:18:57,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:18:57,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:18:57,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:18:57,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:18:57,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:18:57,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:18:57,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:18:57,592 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:18:57,593 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:18:57,593 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product15.cil.c [2019-10-13 21:18:57,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/402ea6913/dfc8a734f82640008140c032f7c1f239/FLAG01bcddc5c [2019-10-13 21:18:58,250 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:18:58,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product15.cil.c [2019-10-13 21:18:58,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/402ea6913/dfc8a734f82640008140c032f7c1f239/FLAG01bcddc5c [2019-10-13 21:18:58,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/402ea6913/dfc8a734f82640008140c032f7c1f239 [2019-10-13 21:18:58,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:18:58,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:18:58,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:58,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:18:58,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:18:58,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:58" (1/1) ... [2019-10-13 21:18:58,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174a7eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:58, skipping insertion in model container [2019-10-13 21:18:58,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:58" (1/1) ... [2019-10-13 21:18:58,555 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:18:58,641 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:18:59,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:59,399 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:18:59,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:59,638 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:18:59,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:59 WrapperNode [2019-10-13 21:18:59,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:59,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:18:59,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:18:59,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:18:59,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:59" (1/1) ... [2019-10-13 21:18:59,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:59" (1/1) ... [2019-10-13 21:18:59,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:59" (1/1) ... [2019-10-13 21:18:59,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:59" (1/1) ... [2019-10-13 21:18:59,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:59" (1/1) ... [2019-10-13 21:18:59,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:59" (1/1) ... [2019-10-13 21:18:59,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:59" (1/1) ... [2019-10-13 21:18:59,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:18:59,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:18:59,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:18:59,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:18:59,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:59,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:18:59,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:18:59,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:59,889 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:18:59,889 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:18:59,889 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:18:59,889 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:18:59,890 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:18:59,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:18:59,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:18:59,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:18:59,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:18:59,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:18:59,891 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:18:59,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:18:59,891 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:18:59,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:18:59,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:18:59,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:18:59,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:18:59,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:18:59,893 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:18:59,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:18:59,893 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:18:59,893 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:18:59,894 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:18:59,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:18:59,894 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:18:59,894 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:18:59,894 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:18:59,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:59,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:59,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:59,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:18:59,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:18:59,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:18:59,896 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:18:59,896 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:18:59,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:18:59,896 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:18:59,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:18:59,897 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:18:59,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:18:59,897 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:18:59,897 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:18:59,897 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:18:59,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:18:59,897 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:18:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:18:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:18:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:18:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:18:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:18:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:18:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:18:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:18:59,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:18:59,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:18:59,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:18:59,899 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:18:59,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:18:59,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:18:59,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:18:59,900 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:18:59,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:18:59,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:18:59,900 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:18:59,900 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:18:59,901 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:18:59,901 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:18:59,901 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:18:59,901 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-10-13 21:18:59,901 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:18:59,901 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:18:59,901 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:18:59,902 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:18:59,902 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:18:59,902 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:18:59,902 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:18:59,902 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:18:59,903 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:18:59,903 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:18:59,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:18:59,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:18:59,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:18:59,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:18:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:18:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:18:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:18:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:18:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:18:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:18:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:18:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:18:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:18:59,906 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:18:59,906 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:18:59,906 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:18:59,906 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:18:59,906 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:18:59,906 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:18:59,906 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:18:59,906 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:18:59,907 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:18:59,907 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:18:59,907 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:18:59,907 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:18:59,907 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:18:59,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:18:59,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:18:59,908 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:18:59,908 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:18:59,908 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:18:59,908 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:18:59,908 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:18:59,909 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:18:59,909 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:18:59,909 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:18:59,909 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:18:59,909 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:18:59,910 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:18:59,910 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:18:59,910 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:18:59,910 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:18:59,910 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:18:59,910 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:18:59,911 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:18:59,911 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:18:59,911 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:18:59,911 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:18:59,911 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:18:59,911 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:18:59,911 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:18:59,912 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:18:59,912 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:18:59,912 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:18:59,912 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:18:59,912 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:18:59,912 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:18:59,912 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:18:59,913 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:18:59,913 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:18:59,913 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:18:59,913 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:18:59,913 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:18:59,913 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:18:59,913 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:18:59,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:18:59,914 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:18:59,914 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:18:59,914 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:18:59,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:59,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:18:59,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:18:59,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:18:59,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:18:59,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:59,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:18:59,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:59,915 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:59,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:18:59,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:18:59,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:18:59,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:18:59,916 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:18:59,916 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:18:59,916 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:18:59,916 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:18:59,917 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:18:59,917 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:18:59,917 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:18:59,917 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:18:59,917 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:18:59,917 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:18:59,917 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:18:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:18:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:18:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:18:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:18:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:18:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:18:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:18:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:18:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:18:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:18:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:18:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:18:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:18:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:18:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:18:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:18:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:18:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:18:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:18:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:18:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:18:59,921 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:18:59,921 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:18:59,921 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:18:59,921 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:18:59,921 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:18:59,921 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:18:59,921 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:18:59,922 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:18:59,922 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:18:59,922 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:18:59,922 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:18:59,922 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:18:59,922 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:18:59,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:18:59,923 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:18:59,923 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:18:59,923 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-10-13 21:18:59,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:18:59,923 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:18:59,923 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:18:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:18:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:18:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:18:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:18:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:18:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:18:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:18:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:18:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:18:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:18:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:18:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:18:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:18:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:18:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:19:01,976 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:19:01,977 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:19:01,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:01 BoogieIcfgContainer [2019-10-13 21:19:01,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:19:01,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:19:01,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:19:01,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:19:01,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:18:58" (1/3) ... [2019-10-13 21:19:01,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abd980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:01, skipping insertion in model container [2019-10-13 21:19:01,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:59" (2/3) ... [2019-10-13 21:19:01,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abd980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:01, skipping insertion in model container [2019-10-13 21:19:01,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:01" (3/3) ... [2019-10-13 21:19:01,988 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product15.cil.c [2019-10-13 21:19:01,998 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:19:02,010 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:19:02,023 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:19:02,065 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:19:02,066 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:19:02,066 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:19:02,067 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:19:02,067 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:19:02,067 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:19:02,067 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:19:02,067 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:19:02,105 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states. [2019-10-13 21:19:02,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 21:19:02,139 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:02,141 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] [2019-10-13 21:19:02,144 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:02,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:02,154 INFO L82 PathProgramCache]: Analyzing trace with hash -334786029, now seen corresponding path program 1 times [2019-10-13 21:19:02,165 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:02,165 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730086741] [2019-10-13 21:19:02,166 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:02,167 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:02,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:02,799 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 21:19:02,800 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730086741] [2019-10-13 21:19:02,802 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:02,802 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:19:02,802 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46463192] [2019-10-13 21:19:02,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:19:02,811 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:02,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:19:02,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:19:02,829 INFO L87 Difference]: Start difference. First operand 470 states. Second operand 2 states. [2019-10-13 21:19:02,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:02,935 INFO L93 Difference]: Finished difference Result 634 states and 839 transitions. [2019-10-13 21:19:02,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:19:02,936 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 145 [2019-10-13 21:19:02,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:02,980 INFO L225 Difference]: With dead ends: 634 [2019-10-13 21:19:02,980 INFO L226 Difference]: Without dead ends: 423 [2019-10-13 21:19:02,987 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 21:19:03,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2019-10-13 21:19:03,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2019-10-13 21:19:03,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2019-10-13 21:19:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 564 transitions. [2019-10-13 21:19:03,128 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 564 transitions. Word has length 145 [2019-10-13 21:19:03,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:03,132 INFO L462 AbstractCegarLoop]: Abstraction has 423 states and 564 transitions. [2019-10-13 21:19:03,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:19:03,132 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 564 transitions. [2019-10-13 21:19:03,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-13 21:19:03,144 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:03,145 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] [2019-10-13 21:19:03,145 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:03,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:03,146 INFO L82 PathProgramCache]: Analyzing trace with hash 307688883, now seen corresponding path program 1 times [2019-10-13 21:19:03,146 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:03,147 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495224447] [2019-10-13 21:19:03,147 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:03,147 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:03,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:03,469 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 21:19:03,469 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495224447] [2019-10-13 21:19:03,469 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:03,470 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:03,470 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163506780] [2019-10-13 21:19:03,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:03,476 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:03,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:03,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:03,477 INFO L87 Difference]: Start difference. First operand 423 states and 564 transitions. Second operand 3 states. [2019-10-13 21:19:03,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:03,554 INFO L93 Difference]: Finished difference Result 617 states and 808 transitions. [2019-10-13 21:19:03,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:03,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2019-10-13 21:19:03,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:03,561 INFO L225 Difference]: With dead ends: 617 [2019-10-13 21:19:03,561 INFO L226 Difference]: Without dead ends: 426 [2019-10-13 21:19:03,565 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 21:19:03,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2019-10-13 21:19:03,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 425. [2019-10-13 21:19:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2019-10-13 21:19:03,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 566 transitions. [2019-10-13 21:19:03,614 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 566 transitions. Word has length 146 [2019-10-13 21:19:03,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:03,616 INFO L462 AbstractCegarLoop]: Abstraction has 425 states and 566 transitions. [2019-10-13 21:19:03,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:03,616 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 566 transitions. [2019-10-13 21:19:03,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-13 21:19:03,621 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:03,622 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] [2019-10-13 21:19:03,622 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:03,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:03,623 INFO L82 PathProgramCache]: Analyzing trace with hash -179459229, now seen corresponding path program 1 times [2019-10-13 21:19:03,623 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:03,623 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518472666] [2019-10-13 21:19:03,625 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:03,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:03,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:04,048 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:04,049 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518472666] [2019-10-13 21:19:04,049 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:04,050 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:04,050 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598390011] [2019-10-13 21:19:04,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:04,056 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:04,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:04,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:04,057 INFO L87 Difference]: Start difference. First operand 425 states and 566 transitions. Second operand 3 states. [2019-10-13 21:19:04,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:04,118 INFO L93 Difference]: Finished difference Result 826 states and 1130 transitions. [2019-10-13 21:19:04,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:04,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2019-10-13 21:19:04,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:04,126 INFO L225 Difference]: With dead ends: 826 [2019-10-13 21:19:04,127 INFO L226 Difference]: Without dead ends: 466 [2019-10-13 21:19:04,129 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 21:19:04,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2019-10-13 21:19:04,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 465. [2019-10-13 21:19:04,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2019-10-13 21:19:04,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 635 transitions. [2019-10-13 21:19:04,163 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 635 transitions. Word has length 156 [2019-10-13 21:19:04,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:04,165 INFO L462 AbstractCegarLoop]: Abstraction has 465 states and 635 transitions. [2019-10-13 21:19:04,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:04,165 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 635 transitions. [2019-10-13 21:19:04,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 21:19:04,171 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:04,171 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] [2019-10-13 21:19:04,171 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:04,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:04,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1835832225, now seen corresponding path program 1 times [2019-10-13 21:19:04,172 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:04,172 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764845794] [2019-10-13 21:19:04,172 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:04,173 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:04,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:04,337 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764845794] [2019-10-13 21:19:04,338 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:04,342 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:04,342 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251020826] [2019-10-13 21:19:04,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:04,343 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:04,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:04,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:04,344 INFO L87 Difference]: Start difference. First operand 465 states and 635 transitions. Second operand 3 states. [2019-10-13 21:19:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:04,386 INFO L93 Difference]: Finished difference Result 943 states and 1332 transitions. [2019-10-13 21:19:04,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:04,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2019-10-13 21:19:04,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:04,393 INFO L225 Difference]: With dead ends: 943 [2019-10-13 21:19:04,393 INFO L226 Difference]: Without dead ends: 543 [2019-10-13 21:19:04,394 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 21:19:04,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2019-10-13 21:19:04,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 542. [2019-10-13 21:19:04,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2019-10-13 21:19:04,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 767 transitions. [2019-10-13 21:19:04,423 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 767 transitions. Word has length 157 [2019-10-13 21:19:04,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:04,423 INFO L462 AbstractCegarLoop]: Abstraction has 542 states and 767 transitions. [2019-10-13 21:19:04,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:04,424 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 767 transitions. [2019-10-13 21:19:04,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:19:04,429 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:04,430 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] [2019-10-13 21:19:04,430 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:04,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:04,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1507225213, now seen corresponding path program 1 times [2019-10-13 21:19:04,431 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:04,431 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534454276] [2019-10-13 21:19:04,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:04,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:04,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:04,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534454276] [2019-10-13 21:19:04,585 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:04,585 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:04,585 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797101388] [2019-10-13 21:19:04,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:04,586 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:04,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:04,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:04,587 INFO L87 Difference]: Start difference. First operand 542 states and 767 transitions. Second operand 3 states. [2019-10-13 21:19:04,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:04,629 INFO L93 Difference]: Finished difference Result 1168 states and 1718 transitions. [2019-10-13 21:19:04,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:04,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-10-13 21:19:04,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:04,636 INFO L225 Difference]: With dead ends: 1168 [2019-10-13 21:19:04,637 INFO L226 Difference]: Without dead ends: 691 [2019-10-13 21:19:04,639 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 21:19:04,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2019-10-13 21:19:04,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 690. [2019-10-13 21:19:04,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2019-10-13 21:19:04,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1019 transitions. [2019-10-13 21:19:04,682 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1019 transitions. Word has length 158 [2019-10-13 21:19:04,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:04,683 INFO L462 AbstractCegarLoop]: Abstraction has 690 states and 1019 transitions. [2019-10-13 21:19:04,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:04,683 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1019 transitions. [2019-10-13 21:19:04,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 21:19:04,687 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:04,688 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] [2019-10-13 21:19:04,688 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:04,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:04,689 INFO L82 PathProgramCache]: Analyzing trace with hash 663233921, now seen corresponding path program 1 times [2019-10-13 21:19:04,689 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:04,689 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723168759] [2019-10-13 21:19:04,689 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:04,690 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:04,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:04,889 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:04,889 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723168759] [2019-10-13 21:19:04,890 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:04,890 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:04,890 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888342023] [2019-10-13 21:19:04,891 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:04,891 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:04,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:04,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:04,892 INFO L87 Difference]: Start difference. First operand 690 states and 1019 transitions. Second operand 3 states. [2019-10-13 21:19:04,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:04,937 INFO L93 Difference]: Finished difference Result 1600 states and 2454 transitions. [2019-10-13 21:19:04,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:04,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-13 21:19:04,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:04,945 INFO L225 Difference]: With dead ends: 1600 [2019-10-13 21:19:04,945 INFO L226 Difference]: Without dead ends: 975 [2019-10-13 21:19:04,948 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 21:19:04,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2019-10-13 21:19:04,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 974. [2019-10-13 21:19:04,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 974 states. [2019-10-13 21:19:04,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1499 transitions. [2019-10-13 21:19:04,995 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1499 transitions. Word has length 159 [2019-10-13 21:19:04,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:04,996 INFO L462 AbstractCegarLoop]: Abstraction has 974 states and 1499 transitions. [2019-10-13 21:19:04,996 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:04,996 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1499 transitions. [2019-10-13 21:19:05,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 21:19:05,004 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:05,005 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] [2019-10-13 21:19:05,005 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:05,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:05,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1809778595, now seen corresponding path program 1 times [2019-10-13 21:19:05,006 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:05,006 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834379337] [2019-10-13 21:19:05,007 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:05,007 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:05,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:05,169 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834379337] [2019-10-13 21:19:05,170 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:05,170 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:05,170 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961323628] [2019-10-13 21:19:05,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:05,171 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:05,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:05,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:05,172 INFO L87 Difference]: Start difference. First operand 974 states and 1499 transitions. Second operand 3 states. [2019-10-13 21:19:05,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:05,250 INFO L93 Difference]: Finished difference Result 2428 states and 3854 transitions. [2019-10-13 21:19:05,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:05,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2019-10-13 21:19:05,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:05,265 INFO L225 Difference]: With dead ends: 2428 [2019-10-13 21:19:05,266 INFO L226 Difference]: Without dead ends: 1519 [2019-10-13 21:19:05,271 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 21:19:05,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2019-10-13 21:19:05,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1518. [2019-10-13 21:19:05,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1518 states. [2019-10-13 21:19:05,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 2411 transitions. [2019-10-13 21:19:05,347 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 2411 transitions. Word has length 160 [2019-10-13 21:19:05,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:05,348 INFO L462 AbstractCegarLoop]: Abstraction has 1518 states and 2411 transitions. [2019-10-13 21:19:05,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:05,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 2411 transitions. [2019-10-13 21:19:05,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 21:19:05,355 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:05,355 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] [2019-10-13 21:19:05,355 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:05,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:05,356 INFO L82 PathProgramCache]: Analyzing trace with hash 2049207905, now seen corresponding path program 1 times [2019-10-13 21:19:05,356 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:05,356 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516470023] [2019-10-13 21:19:05,357 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:05,357 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:05,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:05,646 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 21:19:05,646 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516470023] [2019-10-13 21:19:05,646 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:05,647 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:05,647 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575612462] [2019-10-13 21:19:05,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:05,648 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:05,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:05,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:05,648 INFO L87 Difference]: Start difference. First operand 1518 states and 2411 transitions. Second operand 3 states. [2019-10-13 21:19:05,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:05,729 INFO L93 Difference]: Finished difference Result 1773 states and 2747 transitions. [2019-10-13 21:19:05,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:05,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-13 21:19:05,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:05,741 INFO L225 Difference]: With dead ends: 1773 [2019-10-13 21:19:05,741 INFO L226 Difference]: Without dead ends: 1584 [2019-10-13 21:19:05,744 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 21:19:05,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2019-10-13 21:19:05,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1584. [2019-10-13 21:19:05,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2019-10-13 21:19:05,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2499 transitions. [2019-10-13 21:19:05,850 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2499 transitions. Word has length 162 [2019-10-13 21:19:05,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:05,852 INFO L462 AbstractCegarLoop]: Abstraction has 1584 states and 2499 transitions. [2019-10-13 21:19:05,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:05,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2499 transitions. [2019-10-13 21:19:05,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2019-10-13 21:19:05,865 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:05,866 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:05,866 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:05,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:05,867 INFO L82 PathProgramCache]: Analyzing trace with hash 613431326, now seen corresponding path program 1 times [2019-10-13 21:19:05,867 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:05,867 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505636753] [2019-10-13 21:19:05,867 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:05,867 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:05,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:19:06,516 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505636753] [2019-10-13 21:19:06,517 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489487842] [2019-10-13 21:19:06,518 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 21:19:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:07,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 2974 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:07,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:19:07,637 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:08,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:08,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:08,492 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 21:19:08,692 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:08,692 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-13 21:19:08,693 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867851206] [2019-10-13 21:19:08,694 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:19:08,695 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:08,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:19:08,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:08,696 INFO L87 Difference]: Start difference. First operand 1584 states and 2499 transitions. Second operand 9 states. [2019-10-13 21:19:10,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:10,079 INFO L93 Difference]: Finished difference Result 3146 states and 4978 transitions. [2019-10-13 21:19:10,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:19:10,080 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 269 [2019-10-13 21:19:10,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:10,091 INFO L225 Difference]: With dead ends: 3146 [2019-10-13 21:19:10,092 INFO L226 Difference]: Without dead ends: 1598 [2019-10-13 21:19:10,099 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 527 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:19:10,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2019-10-13 21:19:10,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1598. [2019-10-13 21:19:10,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1598 states. [2019-10-13 21:19:10,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2517 transitions. [2019-10-13 21:19:10,201 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2517 transitions. Word has length 269 [2019-10-13 21:19:10,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:10,202 INFO L462 AbstractCegarLoop]: Abstraction has 1598 states and 2517 transitions. [2019-10-13 21:19:10,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:19:10,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2517 transitions. [2019-10-13 21:19:10,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2019-10-13 21:19:10,212 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:10,213 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:10,421 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:10,422 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:10,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:10,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1913459810, now seen corresponding path program 1 times [2019-10-13 21:19:10,423 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:10,423 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347859680] [2019-10-13 21:19:10,423 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,423 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:19:10,963 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347859680] [2019-10-13 21:19:10,964 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734518131] [2019-10-13 21:19:10,964 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 21:19:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:11,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 2975 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:11,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:11,796 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:19:11,796 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:12,330 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:12,409 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 21:19:12,556 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:12,557 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-13 21:19:12,557 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426930926] [2019-10-13 21:19:12,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:19:12,558 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:12,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:19:12,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:12,559 INFO L87 Difference]: Start difference. First operand 1598 states and 2517 transitions. Second operand 7 states. [2019-10-13 21:19:13,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:13,390 INFO L93 Difference]: Finished difference Result 3147 states and 4996 transitions. [2019-10-13 21:19:13,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:19:13,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2019-10-13 21:19:13,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:13,404 INFO L225 Difference]: With dead ends: 3147 [2019-10-13 21:19:13,404 INFO L226 Difference]: Without dead ends: 1600 [2019-10-13 21:19:13,414 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 534 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:19:13,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2019-10-13 21:19:13,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1600. [2019-10-13 21:19:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1600 states. [2019-10-13 21:19:13,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2520 transitions. [2019-10-13 21:19:13,512 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2520 transitions. Word has length 270 [2019-10-13 21:19:13,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:13,512 INFO L462 AbstractCegarLoop]: Abstraction has 1600 states and 2520 transitions. [2019-10-13 21:19:13,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:19:13,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2520 transitions. [2019-10-13 21:19:13,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2019-10-13 21:19:13,529 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:13,529 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:13,737 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:13,737 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:13,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:13,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1814414906, now seen corresponding path program 1 times [2019-10-13 21:19:13,738 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:13,738 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517792075] [2019-10-13 21:19:13,738 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:13,739 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:13,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:14,331 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:19:14,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517792075] [2019-10-13 21:19:14,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363261055] [2019-10-13 21:19:14,333 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 21:19:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:15,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:15,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:15,393 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 21:19:15,393 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:15,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:16,048 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:16,152 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 21:19:16,321 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:16,322 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-13 21:19:16,322 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063648502] [2019-10-13 21:19:16,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:19:16,324 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:16,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:19:16,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:19:16,325 INFO L87 Difference]: Start difference. First operand 1600 states and 2520 transitions. Second operand 16 states. [2019-10-13 21:19:17,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:17,999 INFO L93 Difference]: Finished difference Result 3151 states and 4982 transitions. [2019-10-13 21:19:17,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:17,999 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 271 [2019-10-13 21:19:18,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:18,010 INFO L225 Difference]: With dead ends: 3151 [2019-10-13 21:19:18,011 INFO L226 Difference]: Without dead ends: 1612 [2019-10-13 21:19:18,016 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 531 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:19:18,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2019-10-13 21:19:18,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1610. [2019-10-13 21:19:18,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1610 states. [2019-10-13 21:19:18,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2531 transitions. [2019-10-13 21:19:18,092 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2531 transitions. Word has length 271 [2019-10-13 21:19:18,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:18,092 INFO L462 AbstractCegarLoop]: Abstraction has 1610 states and 2531 transitions. [2019-10-13 21:19:18,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:19:18,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2531 transitions. [2019-10-13 21:19:18,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2019-10-13 21:19:18,102 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:18,103 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:18,305 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:18,306 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:18,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:18,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1777626426, now seen corresponding path program 2 times [2019-10-13 21:19:18,306 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:18,307 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845014108] [2019-10-13 21:19:18,307 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:18,307 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:18,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-10-13 21:19:18,855 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845014108] [2019-10-13 21:19:18,855 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916132146] [2019-10-13 21:19:18,855 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 21:19:19,670 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:19:19,671 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:19,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 2319 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:19,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:19,960 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 21:19:19,960 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:20,412 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:20,482 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-13 21:19:20,585 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:20,585 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-13 21:19:20,585 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213088097] [2019-10-13 21:19:20,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:19:20,586 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:20,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:19:20,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:19:20,589 INFO L87 Difference]: Start difference. First operand 1610 states and 2531 transitions. Second operand 12 states. [2019-10-13 21:19:21,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:21,791 INFO L93 Difference]: Finished difference Result 3142 states and 4970 transitions. [2019-10-13 21:19:21,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:19:21,791 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 272 [2019-10-13 21:19:21,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:21,802 INFO L225 Difference]: With dead ends: 3142 [2019-10-13 21:19:21,803 INFO L226 Difference]: Without dead ends: 1612 [2019-10-13 21:19:21,809 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 538 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:21,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2019-10-13 21:19:21,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1610. [2019-10-13 21:19:21,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1610 states. [2019-10-13 21:19:21,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2530 transitions. [2019-10-13 21:19:21,879 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2530 transitions. Word has length 272 [2019-10-13 21:19:21,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:21,879 INFO L462 AbstractCegarLoop]: Abstraction has 1610 states and 2530 transitions. [2019-10-13 21:19:21,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:19:21,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2530 transitions. [2019-10-13 21:19:21,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2019-10-13 21:19:21,889 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:21,890 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:22,100 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:22,100 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:22,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:22,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1111128036, now seen corresponding path program 3 times [2019-10-13 21:19:22,101 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:22,101 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242920689] [2019-10-13 21:19:22,101 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:22,102 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:22,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:22,564 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 21:19:22,565 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242920689] [2019-10-13 21:19:22,565 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507533999] [2019-10-13 21:19:22,566 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 21:19:23,250 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:19:23,250 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:23,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 2346 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:23,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:23,549 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 21:19:23,549 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:24,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:24,121 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:24,228 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-13 21:19:24,385 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:24,386 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-13 21:19:24,386 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57739983] [2019-10-13 21:19:24,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:19:24,387 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:24,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:19:24,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:24,388 INFO L87 Difference]: Start difference. First operand 1610 states and 2530 transitions. Second operand 15 states. [2019-10-13 21:19:25,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:25,875 INFO L93 Difference]: Finished difference Result 3149 states and 4977 transitions. [2019-10-13 21:19:25,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:25,876 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2019-10-13 21:19:25,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:25,886 INFO L225 Difference]: With dead ends: 3149 [2019-10-13 21:19:25,886 INFO L226 Difference]: Without dead ends: 1614 [2019-10-13 21:19:25,892 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 535 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:19:25,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2019-10-13 21:19:25,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1610. [2019-10-13 21:19:25,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1610 states. [2019-10-13 21:19:25,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2529 transitions. [2019-10-13 21:19:25,971 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2529 transitions. Word has length 273 [2019-10-13 21:19:25,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:25,972 INFO L462 AbstractCegarLoop]: Abstraction has 1610 states and 2529 transitions. [2019-10-13 21:19:25,972 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:19:25,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2529 transitions. [2019-10-13 21:19:25,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2019-10-13 21:19:25,982 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:25,983 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:26,191 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:26,192 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:26,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:26,192 INFO L82 PathProgramCache]: Analyzing trace with hash 53499703, now seen corresponding path program 1 times [2019-10-13 21:19:26,193 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:26,193 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072979973] [2019-10-13 21:19:26,193 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:26,193 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:26,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 21:19:26,549 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072979973] [2019-10-13 21:19:26,550 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739535269] [2019-10-13 21:19:26,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:27,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 2979 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:27,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:27,450 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 21:19:27,451 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:28,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:28,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-13 21:19:28,375 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:28,375 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 31 [2019-10-13 21:19:28,376 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662420041] [2019-10-13 21:19:28,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:19:28,377 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:28,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:19:28,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:28,378 INFO L87 Difference]: Start difference. First operand 1610 states and 2529 transitions. Second operand 11 states.