java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec8_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:18:28,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:18:28,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:18:28,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:18:28,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:18:28,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:18:28,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:18:28,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:18:28,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:18:28,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:18:28,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:18:28,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:18:28,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:18:28,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:18:28,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:18:28,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:18:28,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:18:28,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:18:28,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:18:28,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:18:28,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:18:28,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:18:28,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:18:28,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:18:28,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:18:28,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:18:28,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:18:28,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:18:28,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:18:28,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:18:28,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:18:28,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:18:28,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:18:28,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:18:28,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:18:28,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:18:28,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:18:28,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:18:28,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:18:28,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:18:28,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:18:28,620 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 21:18:28,634 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:18:28,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:18:28,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:18:28,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:18:28,636 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:18:28,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:18:28,637 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:18:28,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:18:28,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:18:28,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:18:28,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:18:28,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:18:28,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:18:28,638 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:18:28,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:18:28,639 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:18:28,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:18:28,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:18:28,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:18:28,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:18:28,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:18:28,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:28,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:18:28,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:18:28,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:18:28,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:18:28,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:18:28,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:18:28,641 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 21:18:28,958 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:18:28,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:18:28,984 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:18:28,986 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:18:28,987 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:18:28,987 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product31.cil.c [2019-10-13 21:18:29,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afe2d47a4/559c37873707467b94e9a5654b138eb1/FLAGdaf15200e [2019-10-13 21:18:29,696 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:18:29,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product31.cil.c [2019-10-13 21:18:29,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afe2d47a4/559c37873707467b94e9a5654b138eb1/FLAGdaf15200e [2019-10-13 21:18:29,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afe2d47a4/559c37873707467b94e9a5654b138eb1 [2019-10-13 21:18:29,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:18:29,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:18:29,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:29,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:18:29,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:18:29,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:29" (1/1) ... [2019-10-13 21:18:29,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4563917c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:29, skipping insertion in model container [2019-10-13 21:18:29,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:29" (1/1) ... [2019-10-13 21:18:29,895 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:18:29,975 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:18:30,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:30,774 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:18:30,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:31,036 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:18:31,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:31 WrapperNode [2019-10-13 21:18:31,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:31,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:18:31,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:18:31,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:18:31,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:31" (1/1) ... [2019-10-13 21:18:31,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:31" (1/1) ... [2019-10-13 21:18:31,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:31" (1/1) ... [2019-10-13 21:18:31,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:31" (1/1) ... [2019-10-13 21:18:31,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:31" (1/1) ... [2019-10-13 21:18:31,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:31" (1/1) ... [2019-10-13 21:18:31,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:31" (1/1) ... [2019-10-13 21:18:31,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:18:31,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:18:31,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:18:31,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:18:31,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:31" (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 21:18:31,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:18:31,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:18:31,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:31,307 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:18:31,307 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:18:31,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:18:31,309 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:18:31,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:18:31,310 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:18:31,310 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:18:31,310 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:18:31,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:18:31,311 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:18:31,312 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:18:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:18:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:18:31,315 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:18:31,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:18:31,316 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:18:31,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:18:31,317 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:18:31,317 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:18:31,317 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:18:31,317 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:18:31,318 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:18:31,318 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:18:31,318 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:18:31,318 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:18:31,318 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:18:31,318 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:18:31,319 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:18:31,319 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:18:31,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:31,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:31,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:31,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:18:31,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:18:31,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:18:31,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:18:31,320 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:18:31,320 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:18:31,320 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-10-13 21:18:31,321 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:18:31,321 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:18:31,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:18:31,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:18:31,321 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:18:31,321 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:18:31,321 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:18:31,322 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:18:31,322 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:18:31,322 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:18:31,322 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:18:31,322 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:18:31,322 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:18:31,322 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:18:31,323 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:18:31,323 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:18:31,323 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:18:31,323 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:18:31,323 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:18:31,323 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:18:31,324 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:18:31,324 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:18:31,324 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:18:31,325 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:18:31,325 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:18:31,325 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:18:31,325 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:18:31,325 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:18:31,325 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:18:31,325 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:18:31,326 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:18:31,326 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:18:31,326 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:18:31,327 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:18:31,327 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:18:31,327 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:18:31,327 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:18:31,328 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:18:31,328 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:18:31,328 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:18:31,328 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:18:31,328 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:18:31,328 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:18:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:18:31,330 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:18:31,330 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:18:31,330 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:18:31,330 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:18:31,331 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:18:31,331 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:18:31,331 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:18:31,331 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:18:31,331 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:18:31,331 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:31,331 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:18:31,332 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:31,332 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:18:31,332 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:18:31,332 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:18:31,332 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:18:31,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:18:31,332 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:18:31,333 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:18:31,333 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:18:31,333 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:18:31,333 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:18:31,333 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:18:31,333 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:18:31,333 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:18:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:18:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:18:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:18:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:18:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:18:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:18:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:18:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:18:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:18:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:18:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:18:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:18:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:18:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:18:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:18:31,338 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:18:31,338 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:18:31,338 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:18:31,338 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:18:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:18:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:18:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:18:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:18:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:18:31,347 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:18:31,347 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:18:31,348 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:18:31,348 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:18:31,348 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:18:31,349 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:18:31,349 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:18:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:18:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:18:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:18:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:18:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:18:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:18:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:18:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:18:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:18:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:18:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:18:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:18:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:18:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:18:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:18:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:18:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:18:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:18:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:18:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:18:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:18:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:18:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:18:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:18:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:18:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:18:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:18:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:18:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:18:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:18:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:18:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:18:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:18:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:18:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-10-13 21:18:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:18:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:18:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:18:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:18:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:18:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:18:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:18:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:18:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:18:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:18:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:18:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:18:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:18:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:18:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:18:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:18:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:18:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:18:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:18:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:18:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:18:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:18:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:18:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:18:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:18:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:18:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:18:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:18:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:18:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:18:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:18:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:18:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:18:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:18:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:18:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:18:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:18:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:18:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:18:31,367 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:18:31,367 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:18:31,367 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:18:31,367 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:18:31,367 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:18:31,368 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:18:31,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:18:31,368 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:18:31,368 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:18:31,368 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:18:31,368 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:18:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:18:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:18:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:18:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:18:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:18:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:18:31,370 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:18:31,370 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:31,370 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:31,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:18:31,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:18:31,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:18:33,767 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:18:33,767 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:18:33,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:33 BoogieIcfgContainer [2019-10-13 21:18:33,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:18:33,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:18:33,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:18:33,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:18:33,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:18:29" (1/3) ... [2019-10-13 21:18:33,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53fef09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:33, skipping insertion in model container [2019-10-13 21:18:33,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:31" (2/3) ... [2019-10-13 21:18:33,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53fef09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:33, skipping insertion in model container [2019-10-13 21:18:33,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:33" (3/3) ... [2019-10-13 21:18:33,781 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product31.cil.c [2019-10-13 21:18:33,792 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:18:33,801 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:18:33,813 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:18:33,851 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:18:33,855 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:18:33,855 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:18:33,855 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:18:33,856 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:18:33,856 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:18:33,856 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:18:33,856 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:18:33,895 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states. [2019-10-13 21:18:33,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:18:33,925 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:33,926 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:33,928 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:33,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:33,935 INFO L82 PathProgramCache]: Analyzing trace with hash 718074113, now seen corresponding path program 1 times [2019-10-13 21:18:33,945 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:33,946 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438802873] [2019-10-13 21:18:33,946 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:33,946 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:33,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:34,646 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:34,647 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438802873] [2019-10-13 21:18:34,648 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:34,649 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:18:34,649 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074822604] [2019-10-13 21:18:34,655 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:18:34,657 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:34,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:18:34,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:34,674 INFO L87 Difference]: Start difference. First operand 562 states. Second operand 2 states. [2019-10-13 21:18:34,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:34,767 INFO L93 Difference]: Finished difference Result 866 states and 1134 transitions. [2019-10-13 21:18:34,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:18:34,772 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 158 [2019-10-13 21:18:34,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:34,817 INFO L225 Difference]: With dead ends: 866 [2019-10-13 21:18:34,818 INFO L226 Difference]: Without dead ends: 539 [2019-10-13 21:18:34,830 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:34,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2019-10-13 21:18:34,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2019-10-13 21:18:34,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2019-10-13 21:18:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 711 transitions. [2019-10-13 21:18:34,958 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 711 transitions. Word has length 158 [2019-10-13 21:18:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:34,960 INFO L462 AbstractCegarLoop]: Abstraction has 539 states and 711 transitions. [2019-10-13 21:18:34,960 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:18:34,960 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 711 transitions. [2019-10-13 21:18:34,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 21:18:34,971 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:34,971 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:34,972 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:34,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:34,972 INFO L82 PathProgramCache]: Analyzing trace with hash 95900195, now seen corresponding path program 1 times [2019-10-13 21:18:34,972 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:34,972 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635179914] [2019-10-13 21:18:34,973 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:34,973 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:34,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:35,318 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:35,319 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635179914] [2019-10-13 21:18:35,319 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:35,319 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:35,319 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592350987] [2019-10-13 21:18:35,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:35,328 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:35,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:35,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:35,329 INFO L87 Difference]: Start difference. First operand 539 states and 711 transitions. Second operand 3 states. [2019-10-13 21:18:35,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:35,424 INFO L93 Difference]: Finished difference Result 849 states and 1102 transitions. [2019-10-13 21:18:35,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:35,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-13 21:18:35,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:35,431 INFO L225 Difference]: With dead ends: 849 [2019-10-13 21:18:35,431 INFO L226 Difference]: Without dead ends: 542 [2019-10-13 21:18:35,435 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:35,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2019-10-13 21:18:35,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 541. [2019-10-13 21:18:35,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2019-10-13 21:18:35,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 713 transitions. [2019-10-13 21:18:35,485 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 713 transitions. Word has length 159 [2019-10-13 21:18:35,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:35,486 INFO L462 AbstractCegarLoop]: Abstraction has 541 states and 713 transitions. [2019-10-13 21:18:35,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:35,486 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 713 transitions. [2019-10-13 21:18:35,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 21:18:35,492 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:35,492 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:35,492 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:35,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:35,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1408661417, now seen corresponding path program 1 times [2019-10-13 21:18:35,493 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:35,493 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304092204] [2019-10-13 21:18:35,493 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:35,494 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:35,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:35,785 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304092204] [2019-10-13 21:18:35,785 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:35,785 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:35,785 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402426657] [2019-10-13 21:18:35,788 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:35,791 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:35,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:35,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:35,792 INFO L87 Difference]: Start difference. First operand 541 states and 713 transitions. Second operand 3 states. [2019-10-13 21:18:35,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:35,854 INFO L93 Difference]: Finished difference Result 1058 states and 1424 transitions. [2019-10-13 21:18:35,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:35,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-10-13 21:18:35,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:35,863 INFO L225 Difference]: With dead ends: 1058 [2019-10-13 21:18:35,863 INFO L226 Difference]: Without dead ends: 582 [2019-10-13 21:18:35,865 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:35,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2019-10-13 21:18:35,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 581. [2019-10-13 21:18:35,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2019-10-13 21:18:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 782 transitions. [2019-10-13 21:18:35,899 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 782 transitions. Word has length 165 [2019-10-13 21:18:35,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:35,903 INFO L462 AbstractCegarLoop]: Abstraction has 581 states and 782 transitions. [2019-10-13 21:18:35,903 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 782 transitions. [2019-10-13 21:18:35,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:18:35,912 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:35,912 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:35,913 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:35,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:35,913 INFO L82 PathProgramCache]: Analyzing trace with hash 476194519, now seen corresponding path program 1 times [2019-10-13 21:18:35,913 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:35,913 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684503872] [2019-10-13 21:18:35,914 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:35,914 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:35,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:36,132 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:18:36,132 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684503872] [2019-10-13 21:18:36,133 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:36,133 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:36,133 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296438414] [2019-10-13 21:18:36,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:36,134 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:36,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:36,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:36,135 INFO L87 Difference]: Start difference. First operand 581 states and 782 transitions. Second operand 3 states. [2019-10-13 21:18:36,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:36,179 INFO L93 Difference]: Finished difference Result 979 states and 1302 transitions. [2019-10-13 21:18:36,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:36,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2019-10-13 21:18:36,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:36,185 INFO L225 Difference]: With dead ends: 979 [2019-10-13 21:18:36,185 INFO L226 Difference]: Without dead ends: 674 [2019-10-13 21:18:36,187 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:36,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2019-10-13 21:18:36,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2019-10-13 21:18:36,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2019-10-13 21:18:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 905 transitions. [2019-10-13 21:18:36,218 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 905 transitions. Word has length 166 [2019-10-13 21:18:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:36,218 INFO L462 AbstractCegarLoop]: Abstraction has 674 states and 905 transitions. [2019-10-13 21:18:36,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 905 transitions. [2019-10-13 21:18:36,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2019-10-13 21:18:36,225 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:36,226 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:36,226 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:36,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:36,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1063434513, now seen corresponding path program 1 times [2019-10-13 21:18:36,227 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:36,227 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414278200] [2019-10-13 21:18:36,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:36,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:36,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:37,074 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 21:18:37,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414278200] [2019-10-13 21:18:37,076 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334148326] [2019-10-13 21:18:37,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:37,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 3484 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:37,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 21:18:38,385 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:39,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:39,361 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:39,486 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 21:18:39,665 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:18:39,666 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-13 21:18:39,666 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441150054] [2019-10-13 21:18:39,667 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:18:39,667 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:39,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:18:39,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:39,669 INFO L87 Difference]: Start difference. First operand 674 states and 905 transitions. Second operand 9 states. [2019-10-13 21:18:41,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:41,233 INFO L93 Difference]: Finished difference Result 1326 states and 1790 transitions. [2019-10-13 21:18:41,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:18:41,234 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 309 [2019-10-13 21:18:41,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:41,245 INFO L225 Difference]: With dead ends: 1326 [2019-10-13 21:18:41,245 INFO L226 Difference]: Without dead ends: 688 [2019-10-13 21:18:41,249 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 607 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:18:41,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2019-10-13 21:18:41,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2019-10-13 21:18:41,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2019-10-13 21:18:41,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 923 transitions. [2019-10-13 21:18:41,300 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 923 transitions. Word has length 309 [2019-10-13 21:18:41,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:41,301 INFO L462 AbstractCegarLoop]: Abstraction has 688 states and 923 transitions. [2019-10-13 21:18:41,301 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:18:41,301 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 923 transitions. [2019-10-13 21:18:41,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2019-10-13 21:18:41,307 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:41,308 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:41,516 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:41,516 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:41,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:41,517 INFO L82 PathProgramCache]: Analyzing trace with hash -343580685, now seen corresponding path program 1 times [2019-10-13 21:18:41,518 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:41,518 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622959979] [2019-10-13 21:18:41,518 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:41,519 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:41,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:42,095 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 21:18:42,095 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622959979] [2019-10-13 21:18:42,096 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731548565] [2019-10-13 21:18:42,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:42,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 3485 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:43,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:43,261 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 21:18:43,261 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:43,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:43,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:44,106 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 21:18:44,106 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:18:44,106 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-13 21:18:44,106 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231293346] [2019-10-13 21:18:44,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:18:44,107 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:44,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:18:44,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:18:44,109 INFO L87 Difference]: Start difference. First operand 688 states and 923 transitions. Second operand 7 states. [2019-10-13 21:18:45,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:45,203 INFO L93 Difference]: Finished difference Result 1327 states and 1794 transitions. [2019-10-13 21:18:45,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:18:45,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2019-10-13 21:18:45,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:45,209 INFO L225 Difference]: With dead ends: 1327 [2019-10-13 21:18:45,209 INFO L226 Difference]: Without dead ends: 690 [2019-10-13 21:18:45,213 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 614 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:18:45,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-10-13 21:18:45,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2019-10-13 21:18:45,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2019-10-13 21:18:45,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 926 transitions. [2019-10-13 21:18:45,244 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 926 transitions. Word has length 310 [2019-10-13 21:18:45,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:45,244 INFO L462 AbstractCegarLoop]: Abstraction has 690 states and 926 transitions. [2019-10-13 21:18:45,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:18:45,244 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 926 transitions. [2019-10-13 21:18:45,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2019-10-13 21:18:45,251 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:45,252 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:45,460 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:45,461 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:45,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:45,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1252874735, now seen corresponding path program 1 times [2019-10-13 21:18:45,462 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:45,462 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127020816] [2019-10-13 21:18:45,462 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:45,462 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:45,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:46,025 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 21:18:46,026 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127020816] [2019-10-13 21:18:46,026 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670166843] [2019-10-13 21:18:46,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:46,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 3486 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:46,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:47,000 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:18:47,000 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:47,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:47,808 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:47,897 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:48,061 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 21:18:48,062 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:48,062 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-13 21:18:48,062 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949290282] [2019-10-13 21:18:48,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:18:48,064 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:48,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:18:48,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:18:48,065 INFO L87 Difference]: Start difference. First operand 690 states and 926 transitions. Second operand 16 states. [2019-10-13 21:18:50,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:50,009 INFO L93 Difference]: Finished difference Result 1331 states and 1794 transitions. [2019-10-13 21:18:50,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:18:50,009 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 311 [2019-10-13 21:18:50,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:50,014 INFO L225 Difference]: With dead ends: 1331 [2019-10-13 21:18:50,014 INFO L226 Difference]: Without dead ends: 702 [2019-10-13 21:18:50,019 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 611 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:18:50,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-13 21:18:50,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 700. [2019-10-13 21:18:50,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-10-13 21:18:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 937 transitions. [2019-10-13 21:18:50,055 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 937 transitions. Word has length 311 [2019-10-13 21:18:50,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:50,056 INFO L462 AbstractCegarLoop]: Abstraction has 700 states and 937 transitions. [2019-10-13 21:18:50,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:18:50,056 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 937 transitions. [2019-10-13 21:18:50,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2019-10-13 21:18:50,061 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:50,061 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:50,271 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:50,271 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:50,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:50,272 INFO L82 PathProgramCache]: Analyzing trace with hash -2090674233, now seen corresponding path program 2 times [2019-10-13 21:18:50,272 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:50,272 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190018631] [2019-10-13 21:18:50,272 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:50,272 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:50,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:50,829 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-10-13 21:18:50,829 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190018631] [2019-10-13 21:18:50,829 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124650154] [2019-10-13 21:18:50,830 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:51,547 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:18:51,547 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:18:51,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 2440 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:51,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:18:51,817 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:52,431 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:52,511 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 21:18:52,598 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:52,598 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-13 21:18:52,598 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159869309] [2019-10-13 21:18:52,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:18:52,605 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:52,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:18:52,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:18:52,607 INFO L87 Difference]: Start difference. First operand 700 states and 937 transitions. Second operand 12 states. [2019-10-13 21:18:53,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:53,945 INFO L93 Difference]: Finished difference Result 1322 states and 1782 transitions. [2019-10-13 21:18:53,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:18:53,946 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 312 [2019-10-13 21:18:53,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:53,950 INFO L225 Difference]: With dead ends: 1322 [2019-10-13 21:18:53,950 INFO L226 Difference]: Without dead ends: 702 [2019-10-13 21:18:53,953 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 618 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:53,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-13 21:18:53,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 700. [2019-10-13 21:18:53,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-10-13 21:18:53,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 936 transitions. [2019-10-13 21:18:53,979 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 936 transitions. Word has length 312 [2019-10-13 21:18:53,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:53,980 INFO L462 AbstractCegarLoop]: Abstraction has 700 states and 936 transitions. [2019-10-13 21:18:53,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:18:53,980 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 936 transitions. [2019-10-13 21:18:53,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2019-10-13 21:18:53,984 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:53,984 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:54,200 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:54,201 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:54,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:54,202 INFO L82 PathProgramCache]: Analyzing trace with hash 443053049, now seen corresponding path program 3 times [2019-10-13 21:18:54,202 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:54,203 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332076032] [2019-10-13 21:18:54,203 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:54,203 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:54,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-13 21:18:54,635 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332076032] [2019-10-13 21:18:54,636 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153854002] [2019-10-13 21:18:54,636 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:55,294 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:18:55,294 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:18:55,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:55,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:18:55,548 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:56,161 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:56,245 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:56,320 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 21:18:56,531 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:56,531 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-13 21:18:56,531 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147600451] [2019-10-13 21:18:56,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:18:56,533 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:56,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:18:56,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:56,534 INFO L87 Difference]: Start difference. First operand 700 states and 936 transitions. Second operand 15 states. [2019-10-13 21:18:58,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:58,466 INFO L93 Difference]: Finished difference Result 1329 states and 1789 transitions. [2019-10-13 21:18:58,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:18:58,467 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 313 [2019-10-13 21:18:58,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:58,472 INFO L225 Difference]: With dead ends: 1329 [2019-10-13 21:18:58,472 INFO L226 Difference]: Without dead ends: 704 [2019-10-13 21:18:58,475 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 615 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:18:58,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2019-10-13 21:18:58,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 700. [2019-10-13 21:18:58,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-10-13 21:18:58,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 935 transitions. [2019-10-13 21:18:58,504 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 935 transitions. Word has length 313 [2019-10-13 21:18:58,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:58,505 INFO L462 AbstractCegarLoop]: Abstraction has 700 states and 935 transitions. [2019-10-13 21:18:58,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:18:58,505 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 935 transitions. [2019-10-13 21:18:58,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2019-10-13 21:18:58,509 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:58,509 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:58,716 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:58,717 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:58,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:58,718 INFO L82 PathProgramCache]: Analyzing trace with hash -616805140, now seen corresponding path program 1 times [2019-10-13 21:18:58,718 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:58,718 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237079023] [2019-10-13 21:18:58,719 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:58,719 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:58,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:59,096 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-13 21:18:59,096 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237079023] [2019-10-13 21:18:59,097 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210628915] [2019-10-13 21:18:59,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:59,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 3489 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:59,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:00,134 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:19:00,135 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:00,742 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:00,826 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 21:19:00,918 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:00,918 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 31 [2019-10-13 21:19:00,919 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189509358] [2019-10-13 21:19:00,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:19:00,921 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:00,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:19:00,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:00,928 INFO L87 Difference]: Start difference. First operand 700 states and 935 transitions. Second operand 11 states.