java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec9_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:19:08,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:19:08,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:19:08,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:19:08,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:19:08,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:19:08,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:19:08,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:19:08,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:19:08,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:19:08,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:19:08,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:19:08,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:19:08,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:19:08,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:19:08,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:19:08,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:19:08,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:19:08,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:19:08,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:19:08,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:19:08,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:19:08,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:19:08,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:19:08,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:19:08,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:19:08,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:19:08,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:19:08,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:19:08,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:19:08,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:19:08,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:19:08,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:19:08,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:19:08,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:19:08,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:19:08,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:19:08,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:19:08,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:19:08,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:19:08,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:19:08,683 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 21:19:08,704 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:19:08,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:19:08,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:19:08,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:19:08,707 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:19:08,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:19:08,708 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:19:08,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:19:08,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:19:08,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:19:08,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:19:08,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:19:08,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:19:08,710 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:19:08,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:19:08,711 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:19:08,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:19:08,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:19:08,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:19:08,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:19:08,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:19:08,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:19:08,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:19:08,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:19:08,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:19:08,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:19:08,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:19:08,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:19:08,714 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 21:19:09,008 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:19:09,027 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:19:09,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:19:09,030 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:19:09,031 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:19:09,031 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product31.cil.c [2019-10-13 21:19:09,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3974f2a9/bcb8508cd23541ad94b1fee30294a6c5/FLAG8f93efa12 [2019-10-13 21:19:09,685 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:19:09,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product31.cil.c [2019-10-13 21:19:09,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3974f2a9/bcb8508cd23541ad94b1fee30294a6c5/FLAG8f93efa12 [2019-10-13 21:19:09,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3974f2a9/bcb8508cd23541ad94b1fee30294a6c5 [2019-10-13 21:19:09,950 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:19:09,951 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:19:09,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:09,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:19:09,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:19:09,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:09" (1/1) ... [2019-10-13 21:19:09,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54330d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:09, skipping insertion in model container [2019-10-13 21:19:09,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:09" (1/1) ... [2019-10-13 21:19:09,962 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:19:10,037 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:19:10,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:10,845 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:19:10,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:11,066 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:19:11,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:11 WrapperNode [2019-10-13 21:19:11,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:11,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:19:11,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:19:11,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:19:11,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:11" (1/1) ... [2019-10-13 21:19:11,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:11" (1/1) ... [2019-10-13 21:19:11,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:11" (1/1) ... [2019-10-13 21:19:11,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:11" (1/1) ... [2019-10-13 21:19:11,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:11" (1/1) ... [2019-10-13 21:19:11,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:11" (1/1) ... [2019-10-13 21:19:11,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:11" (1/1) ... [2019-10-13 21:19:11,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:19:11,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:19:11,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:19:11,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:19:11,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:11" (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 21:19:11,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:19:11,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:19:11,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:11,307 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:19:11,307 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:19:11,307 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:19:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:19:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:19:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:19:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:19:11,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:19:11,309 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:19:11,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:19:11,309 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:19:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:19:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:19:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:19:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:19:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:19:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:19:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:19:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:19:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:19:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:19:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:19:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:19:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:19:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:19:11,313 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:19:11,313 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:19:11,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:11,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:11,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:11,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:19:11,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:19:11,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:19:11,314 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:19:11,314 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:19:11,314 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:19:11,314 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:19:11,315 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:19:11,315 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:19:11,315 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:19:11,315 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:19:11,315 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:19:11,315 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:19:11,315 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:19:11,316 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:19:11,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:19:11,316 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:19:11,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:19:11,316 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:19:11,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:19:11,317 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:19:11,317 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:19:11,317 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:19:11,317 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:19:11,317 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:19:11,317 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:19:11,318 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:19:11,318 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:19:11,318 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:19:11,318 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:19:11,318 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:19:11,319 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:19:11,319 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:19:11,319 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:19:11,319 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:19:11,319 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:19:11,320 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:19:11,320 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:19:11,320 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:19:11,320 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:19:11,320 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:19:11,321 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:19:11,321 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:19:11,321 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:19:11,321 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:19:11,321 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:19:11,322 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:19:11,322 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:19:11,322 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:19:11,322 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:19:11,322 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:19:11,322 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:19:11,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:19:11,323 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:19:11,323 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:19:11,323 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:11,323 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:19:11,323 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:11,323 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:19:11,324 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:19:11,324 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:19:11,324 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:19:11,324 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:19:11,324 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:19:11,324 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:19:11,325 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:19:11,325 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:19:11,325 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:19:11,325 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:19:11,325 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:19:11,325 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:19:11,325 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:19:11,326 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:19:11,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:11,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:11,326 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:19:11,326 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-10-13 21:19:11,326 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:19:11,326 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:19:11,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:19:11,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:19:11,327 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:19:11,327 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:19:11,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:19:11,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:19:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:19:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:19:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:19:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:19:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:19:11,329 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:19:11,329 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:19:11,329 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:19:11,329 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:19:11,329 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:19:11,329 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:19:11,330 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:19:11,330 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:19:11,330 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:19:11,330 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:19:11,330 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:19:11,330 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:19:11,331 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:19:11,331 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:19:11,331 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:19:11,331 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:19:11,331 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:19:11,332 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:19:11,332 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:19:11,332 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:19:11,332 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:19:11,332 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:19:11,332 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:19:11,332 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:19:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:19:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:19:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:19:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:19:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:19:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:19:11,334 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:19:11,334 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:19:11,334 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:19:11,334 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:19:11,334 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:19:11,335 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:19:11,335 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:11,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:19:11,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:19:11,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:19:11,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:19:11,335 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:11,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:19:11,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:11,336 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:11,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:19:11,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:19:11,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:19:11,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:19:11,337 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:19:11,337 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:19:11,337 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:19:11,337 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:19:11,337 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:19:11,337 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:19:11,337 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:19:11,338 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:19:11,338 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:19:11,338 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:19:11,338 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:19:11,338 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:19:11,338 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:19:11,339 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:19:11,339 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:19:11,339 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:19:11,339 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:19:11,339 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:19:11,339 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:19:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:19:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:19:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:19:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:19:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:19:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:19:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:19:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:19:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:19:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:19:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:19:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:19:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:19:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:19:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:19:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:19:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:19:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:19:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:19:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:19:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:19:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:19:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:19:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:19:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:19:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:19:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:19:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:19:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:19:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:19:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:19:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:19:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:19:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:19:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:19:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:19:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:19:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:19:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:19:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:19:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:19:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:19:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:19:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:19:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:19:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:19:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-10-13 21:19:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:19:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:19:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:19:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:19:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:19:13,334 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:19:13,334 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:19:13,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:13 BoogieIcfgContainer [2019-10-13 21:19:13,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:19:13,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:19:13,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:19:13,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:19:13,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:19:09" (1/3) ... [2019-10-13 21:19:13,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7a59d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:13, skipping insertion in model container [2019-10-13 21:19:13,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:11" (2/3) ... [2019-10-13 21:19:13,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7a59d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:13, skipping insertion in model container [2019-10-13 21:19:13,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:13" (3/3) ... [2019-10-13 21:19:13,345 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product31.cil.c [2019-10-13 21:19:13,354 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:19:13,364 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:19:13,376 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:19:13,414 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:19:13,414 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:19:13,417 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:19:13,417 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:19:13,418 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:19:13,418 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:19:13,418 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:19:13,418 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:19:13,452 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states. [2019-10-13 21:19:13,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:19:13,475 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:13,476 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 21:19:13,478 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:13,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:13,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1078729568, now seen corresponding path program 1 times [2019-10-13 21:19:13,491 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:13,491 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860097237] [2019-10-13 21:19:13,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:13,492 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:13,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:14,143 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:14,144 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860097237] [2019-10-13 21:19:14,144 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:14,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:19:14,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099721499] [2019-10-13 21:19:14,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:19:14,151 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:14,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:19:14,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:19:14,168 INFO L87 Difference]: Start difference. First operand 562 states. Second operand 2 states. [2019-10-13 21:19:14,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:14,294 INFO L93 Difference]: Finished difference Result 866 states and 1134 transitions. [2019-10-13 21:19:14,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:19:14,296 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 158 [2019-10-13 21:19:14,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:14,335 INFO L225 Difference]: With dead ends: 866 [2019-10-13 21:19:14,336 INFO L226 Difference]: Without dead ends: 539 [2019-10-13 21:19:14,346 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:19:14,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2019-10-13 21:19:14,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2019-10-13 21:19:14,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2019-10-13 21:19:14,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 711 transitions. [2019-10-13 21:19:14,448 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 711 transitions. Word has length 158 [2019-10-13 21:19:14,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:14,450 INFO L462 AbstractCegarLoop]: Abstraction has 539 states and 711 transitions. [2019-10-13 21:19:14,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:19:14,451 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 711 transitions. [2019-10-13 21:19:14,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 21:19:14,458 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:14,458 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 21:19:14,458 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:14,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:14,459 INFO L82 PathProgramCache]: Analyzing trace with hash -240007938, now seen corresponding path program 1 times [2019-10-13 21:19:14,459 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:14,459 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904307207] [2019-10-13 21:19:14,460 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:14,460 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:14,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:14,708 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904307207] [2019-10-13 21:19:14,709 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:14,709 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:14,709 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838105595] [2019-10-13 21:19:14,711 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:14,712 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:14,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:14,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:14,712 INFO L87 Difference]: Start difference. First operand 539 states and 711 transitions. Second operand 3 states. [2019-10-13 21:19:14,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:14,762 INFO L93 Difference]: Finished difference Result 849 states and 1102 transitions. [2019-10-13 21:19:14,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:14,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-13 21:19:14,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:14,768 INFO L225 Difference]: With dead ends: 849 [2019-10-13 21:19:14,768 INFO L226 Difference]: Without dead ends: 542 [2019-10-13 21:19:14,770 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:14,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2019-10-13 21:19:14,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 541. [2019-10-13 21:19:14,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2019-10-13 21:19:14,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 713 transitions. [2019-10-13 21:19:14,803 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 713 transitions. Word has length 159 [2019-10-13 21:19:14,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:14,804 INFO L462 AbstractCegarLoop]: Abstraction has 541 states and 713 transitions. [2019-10-13 21:19:14,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:14,804 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 713 transitions. [2019-10-13 21:19:14,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 21:19:14,808 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:14,808 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 21:19:14,808 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:14,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:14,809 INFO L82 PathProgramCache]: Analyzing trace with hash 349353138, now seen corresponding path program 1 times [2019-10-13 21:19:14,809 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:14,809 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117788266] [2019-10-13 21:19:14,809 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:14,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:14,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:14,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117788266] [2019-10-13 21:19:14,990 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:14,990 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:14,991 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378633492] [2019-10-13 21:19:14,991 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:14,992 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:14,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:14,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:14,992 INFO L87 Difference]: Start difference. First operand 541 states and 713 transitions. Second operand 3 states. [2019-10-13 21:19:15,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:15,032 INFO L93 Difference]: Finished difference Result 1058 states and 1424 transitions. [2019-10-13 21:19:15,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:15,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-10-13 21:19:15,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:15,037 INFO L225 Difference]: With dead ends: 1058 [2019-10-13 21:19:15,037 INFO L226 Difference]: Without dead ends: 582 [2019-10-13 21:19:15,039 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:15,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2019-10-13 21:19:15,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 581. [2019-10-13 21:19:15,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2019-10-13 21:19:15,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 782 transitions. [2019-10-13 21:19:15,065 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 782 transitions. Word has length 165 [2019-10-13 21:19:15,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:15,066 INFO L462 AbstractCegarLoop]: Abstraction has 581 states and 782 transitions. [2019-10-13 21:19:15,066 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:15,066 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 782 transitions. [2019-10-13 21:19:15,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:19:15,070 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:15,070 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 21:19:15,070 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:15,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:15,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1329497994, now seen corresponding path program 1 times [2019-10-13 21:19:15,071 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:15,071 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325129788] [2019-10-13 21:19:15,072 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:15,072 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:15,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:15,252 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:19:15,252 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325129788] [2019-10-13 21:19:15,253 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:15,253 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:15,253 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193486627] [2019-10-13 21:19:15,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:15,254 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:15,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:15,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:15,255 INFO L87 Difference]: Start difference. First operand 581 states and 782 transitions. Second operand 3 states. [2019-10-13 21:19:15,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:15,292 INFO L93 Difference]: Finished difference Result 979 states and 1302 transitions. [2019-10-13 21:19:15,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:15,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2019-10-13 21:19:15,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:15,298 INFO L225 Difference]: With dead ends: 979 [2019-10-13 21:19:15,298 INFO L226 Difference]: Without dead ends: 674 [2019-10-13 21:19:15,300 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 21:19:15,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2019-10-13 21:19:15,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2019-10-13 21:19:15,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2019-10-13 21:19:15,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 905 transitions. [2019-10-13 21:19:15,339 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 905 transitions. Word has length 166 [2019-10-13 21:19:15,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:15,341 INFO L462 AbstractCegarLoop]: Abstraction has 674 states and 905 transitions. [2019-10-13 21:19:15,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:15,341 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 905 transitions. [2019-10-13 21:19:15,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2019-10-13 21:19:15,348 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:15,348 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 21:19:15,348 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:15,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:15,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1124748207, now seen corresponding path program 1 times [2019-10-13 21:19:15,349 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:15,350 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186185838] [2019-10-13 21:19:15,350 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:15,350 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:15,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:16,057 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 21:19:16,058 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186185838] [2019-10-13 21:19:16,058 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729737796] [2019-10-13 21:19:16,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:16,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 3484 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:16,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:17,550 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 21:19:17,550 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:18,337 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:18,432 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:18,562 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:18,740 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 21:19:18,741 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:18,741 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-13 21:19:18,741 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297144844] [2019-10-13 21:19:18,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:19:18,743 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:18,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:19:18,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:18,745 INFO L87 Difference]: Start difference. First operand 674 states and 905 transitions. Second operand 9 states. [2019-10-13 21:19:20,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:20,278 INFO L93 Difference]: Finished difference Result 1326 states and 1790 transitions. [2019-10-13 21:19:20,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:19:20,279 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 309 [2019-10-13 21:19:20,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:20,284 INFO L225 Difference]: With dead ends: 1326 [2019-10-13 21:19:20,284 INFO L226 Difference]: Without dead ends: 688 [2019-10-13 21:19:20,288 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 607 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:19:20,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2019-10-13 21:19:20,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2019-10-13 21:19:20,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2019-10-13 21:19:20,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 923 transitions. [2019-10-13 21:19:20,332 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 923 transitions. Word has length 309 [2019-10-13 21:19:20,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:20,335 INFO L462 AbstractCegarLoop]: Abstraction has 688 states and 923 transitions. [2019-10-13 21:19:20,335 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:19:20,335 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 923 transitions. [2019-10-13 21:19:20,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2019-10-13 21:19:20,342 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:20,343 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 21:19:20,553 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:20,554 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:20,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:20,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1162258709, now seen corresponding path program 1 times [2019-10-13 21:19:20,554 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:20,554 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255137698] [2019-10-13 21:19:20,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:20,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:20,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:21,077 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 21:19:21,078 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255137698] [2019-10-13 21:19:21,078 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033662480] [2019-10-13 21:19:21,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:21,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 3485 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:21,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:22,194 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 21:19:22,195 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:22,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:22,925 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:22,996 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 21:19:22,997 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:22,997 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-13 21:19:22,998 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759545051] [2019-10-13 21:19:22,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:19:22,999 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:22,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:19:22,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:23,000 INFO L87 Difference]: Start difference. First operand 688 states and 923 transitions. Second operand 7 states. [2019-10-13 21:19:23,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:23,925 INFO L93 Difference]: Finished difference Result 1327 states and 1794 transitions. [2019-10-13 21:19:23,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:19:23,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2019-10-13 21:19:23,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:23,931 INFO L225 Difference]: With dead ends: 1327 [2019-10-13 21:19:23,931 INFO L226 Difference]: Without dead ends: 690 [2019-10-13 21:19:23,934 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 21:19:23,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-10-13 21:19:23,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2019-10-13 21:19:23,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2019-10-13 21:19:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 926 transitions. [2019-10-13 21:19:23,964 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 926 transitions. Word has length 310 [2019-10-13 21:19:23,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:23,965 INFO L462 AbstractCegarLoop]: Abstraction has 690 states and 926 transitions. [2019-10-13 21:19:23,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:19:23,965 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 926 transitions. [2019-10-13 21:19:23,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2019-10-13 21:19:23,973 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:23,974 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 21:19:24,187 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:24,188 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:24,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:24,189 INFO L82 PathProgramCache]: Analyzing trace with hash -199147695, now seen corresponding path program 1 times [2019-10-13 21:19:24,189 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:24,189 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578292604] [2019-10-13 21:19:24,190 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:24,193 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:24,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:24,897 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 21:19:24,899 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578292604] [2019-10-13 21:19:24,899 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936200113] [2019-10-13 21:19:24,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:25,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 3486 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:25,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:25,971 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 21:19:25,971 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:26,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:26,778 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:26,854 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:27,022 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 21:19:27,023 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:27,023 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-13 21:19:27,023 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109666096] [2019-10-13 21:19:27,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:19:27,024 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:27,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:19:27,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:19:27,025 INFO L87 Difference]: Start difference. First operand 690 states and 926 transitions. Second operand 16 states. [2019-10-13 21:19:28,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:28,908 INFO L93 Difference]: Finished difference Result 1331 states and 1794 transitions. [2019-10-13 21:19:28,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:28,908 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 311 [2019-10-13 21:19:28,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:28,912 INFO L225 Difference]: With dead ends: 1331 [2019-10-13 21:19:28,912 INFO L226 Difference]: Without dead ends: 702 [2019-10-13 21:19:28,915 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 21:19:28,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-13 21:19:28,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 700. [2019-10-13 21:19:28,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-10-13 21:19:28,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 937 transitions. [2019-10-13 21:19:28,942 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 937 transitions. Word has length 311 [2019-10-13 21:19:28,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:28,943 INFO L462 AbstractCegarLoop]: Abstraction has 700 states and 937 transitions. [2019-10-13 21:19:28,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:19:28,943 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 937 transitions. [2019-10-13 21:19:28,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2019-10-13 21:19:28,949 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:28,949 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 21:19:29,156 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:29,157 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:29,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:29,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1116432789, now seen corresponding path program 2 times [2019-10-13 21:19:29,157 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:29,158 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715707097] [2019-10-13 21:19:29,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:29,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:29,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:29,615 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 21:19:29,615 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715707097] [2019-10-13 21:19:29,615 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683452700] [2019-10-13 21:19:29,616 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:30,349 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:19:30,349 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:30,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 2440 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:30,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:30,682 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 21:19:30,683 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:31,249 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:31,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:31,452 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 21:19:31,453 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:31,453 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-13 21:19:31,453 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828206380] [2019-10-13 21:19:31,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:19:31,456 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:31,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:19:31,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:19:31,457 INFO L87 Difference]: Start difference. First operand 700 states and 937 transitions. Second operand 12 states. [2019-10-13 21:19:32,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:32,741 INFO L93 Difference]: Finished difference Result 1322 states and 1782 transitions. [2019-10-13 21:19:32,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:19:32,742 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 312 [2019-10-13 21:19:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:32,746 INFO L225 Difference]: With dead ends: 1322 [2019-10-13 21:19:32,746 INFO L226 Difference]: Without dead ends: 702 [2019-10-13 21:19:32,749 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 618 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:32,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-13 21:19:32,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 700. [2019-10-13 21:19:32,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-10-13 21:19:32,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 936 transitions. [2019-10-13 21:19:32,774 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 936 transitions. Word has length 312 [2019-10-13 21:19:32,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:32,774 INFO L462 AbstractCegarLoop]: Abstraction has 700 states and 936 transitions. [2019-10-13 21:19:32,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:19:32,774 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 936 transitions. [2019-10-13 21:19:32,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2019-10-13 21:19:32,781 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:32,781 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 21:19:32,989 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:32,990 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:32,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:32,990 INFO L82 PathProgramCache]: Analyzing trace with hash 971281821, now seen corresponding path program 3 times [2019-10-13 21:19:32,991 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:32,991 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747944267] [2019-10-13 21:19:32,992 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:32,992 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:32,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:33,424 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 21:19:33,425 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747944267] [2019-10-13 21:19:33,425 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106867514] [2019-10-13 21:19:33,425 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:34,098 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:19:34,098 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:34,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:34,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:34,323 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 21:19:34,323 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:34,915 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:35,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:35,128 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:35,266 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 21:19:35,266 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:35,266 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-13 21:19:35,267 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284741230] [2019-10-13 21:19:35,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:19:35,268 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:35,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:19:35,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:35,269 INFO L87 Difference]: Start difference. First operand 700 states and 936 transitions. Second operand 15 states. [2019-10-13 21:19:37,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:37,077 INFO L93 Difference]: Finished difference Result 1329 states and 1789 transitions. [2019-10-13 21:19:37,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:37,078 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 313 [2019-10-13 21:19:37,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:37,082 INFO L225 Difference]: With dead ends: 1329 [2019-10-13 21:19:37,082 INFO L226 Difference]: Without dead ends: 704 [2019-10-13 21:19:37,085 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 615 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:19:37,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2019-10-13 21:19:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 700. [2019-10-13 21:19:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-10-13 21:19:37,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 935 transitions. [2019-10-13 21:19:37,112 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 935 transitions. Word has length 313 [2019-10-13 21:19:37,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:37,113 INFO L462 AbstractCegarLoop]: Abstraction has 700 states and 935 transitions. [2019-10-13 21:19:37,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:19:37,113 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 935 transitions. [2019-10-13 21:19:37,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2019-10-13 21:19:37,117 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:37,117 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 21:19:37,329 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:37,329 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:37,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:37,330 INFO L82 PathProgramCache]: Analyzing trace with hash -616235182, now seen corresponding path program 1 times [2019-10-13 21:19:37,330 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:37,330 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038706875] [2019-10-13 21:19:37,331 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:37,331 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:37,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:37,714 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 21:19:37,714 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038706875] [2019-10-13 21:19:37,714 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195680345] [2019-10-13 21:19:37,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:38,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 3489 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:38,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:38,735 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 21:19:38,735 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:39,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:39,401 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:39,490 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 21:19:39,490 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:39,490 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 31 [2019-10-13 21:19:39,491 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393795212] [2019-10-13 21:19:39,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:19:39,492 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:39,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:19:39,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:39,493 INFO L87 Difference]: Start difference. First operand 700 states and 935 transitions. Second operand 11 states. [2019-10-13 21:19:41,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:41,309 INFO L93 Difference]: Finished difference Result 1326 states and 1786 transitions. [2019-10-13 21:19:41,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:19:41,315 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 314 [2019-10-13 21:19:41,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:41,319 INFO L225 Difference]: With dead ends: 1326 [2019-10-13 21:19:41,319 INFO L226 Difference]: Without dead ends: 706 [2019-10-13 21:19:41,322 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 622 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:19:41,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2019-10-13 21:19:41,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 702. [2019-10-13 21:19:41,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2019-10-13 21:19:41,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 938 transitions. [2019-10-13 21:19:41,345 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 938 transitions. Word has length 314 [2019-10-13 21:19:41,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:41,345 INFO L462 AbstractCegarLoop]: Abstraction has 702 states and 938 transitions. [2019-10-13 21:19:41,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:19:41,345 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 938 transitions. [2019-10-13 21:19:41,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2019-10-13 21:19:41,349 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:41,349 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, 1, 1, 1, 1] [2019-10-13 21:19:41,565 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:41,565 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:41,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:41,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1771024145, now seen corresponding path program 1 times [2019-10-13 21:19:41,565 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:41,566 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345269687] [2019-10-13 21:19:41,566 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:41,566 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:41,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:41,925 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 21:19:41,925 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345269687] [2019-10-13 21:19:41,925 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554164612] [2019-10-13 21:19:41,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:42,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 3487 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:19:42,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:42,854 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-10-13 21:19:42,854 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2019-10-13 21:19:43,383 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1457054211] [2019-10-13 21:19:43,388 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 316 [2019-10-13 21:19:43,430 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 21:19:43,430 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 21:19:43,552 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 21:19:43,554 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 196 root evaluator evaluations with a maximum evaluation depth of 0. Performed 196 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 386 variables. [2019-10-13 21:19:43,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:43,560 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates