java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:14:41,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:14:41,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:14:41,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:14:41,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:14:41,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:14:41,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:14:41,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:14:41,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:14:41,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:14:41,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:14:41,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:14:41,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:14:41,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:14:41,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:14:41,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:14:41,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:14:41,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:14:41,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:14:41,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:14:41,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:14:41,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:14:41,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:14:41,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:14:41,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:14:41,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:14:41,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:14:41,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:14:41,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:14:41,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:14:41,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:14:41,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:14:41,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:14:41,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:14:41,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:14:41,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:14:41,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:14:41,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:14:41,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:14:41,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:14:41,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:14:41,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:14:41,435 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:14:41,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:14:41,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:14:41,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:14:41,442 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:14:41,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:14:41,443 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:14:41,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:14:41,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:14:41,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:14:41,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:14:41,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:14:41,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:14:41,444 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:14:41,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:14:41,445 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:14:41,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:14:41,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:14:41,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:14:41,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:14:41,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:14:41,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:41,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:14:41,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:14:41,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:14:41,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:14:41,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:14:41,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:14:41,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:14:41,713 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:14:41,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:14:41,738 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:14:41,740 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:14:41,740 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:14:41,741 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c [2019-10-13 21:14:41,830 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c45d9e884/082e71a356ab43fd905800187009b397/FLAG9fbdf6485 [2019-10-13 21:14:42,509 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:14:42,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c [2019-10-13 21:14:42,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c45d9e884/082e71a356ab43fd905800187009b397/FLAG9fbdf6485 [2019-10-13 21:14:42,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c45d9e884/082e71a356ab43fd905800187009b397 [2019-10-13 21:14:42,757 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:14:42,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:14:42,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:42,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:14:42,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:14:42,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:42" (1/1) ... [2019-10-13 21:14:42,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21180631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:42, skipping insertion in model container [2019-10-13 21:14:42,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:42" (1/1) ... [2019-10-13 21:14:42,779 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:14:42,866 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:14:43,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:43,641 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:14:43,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:43,882 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:14:43,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43 WrapperNode [2019-10-13 21:14:43,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:43,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:14:43,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:14:43,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:14:43,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:44,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:44,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:44,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:14:44,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:14:44,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:14:44,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:14:44,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:44,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:14:44,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:14:44,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:44,149 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:14:44,149 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:14:44,150 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:14:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:14:44,152 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:14:44,152 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:14:44,152 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:14:44,153 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:14:44,153 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:14:44,154 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:14:44,154 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:14:44,156 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:14:44,156 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:14:44,157 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:14:44,157 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:14:44,157 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:14:44,158 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:14:44,158 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:14:44,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:44,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:44,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:44,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:14:44,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:14:44,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:14:44,159 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:14:44,159 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:14:44,160 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:14:44,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:14:44,160 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:14:44,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:14:44,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:14:44,161 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:14:44,161 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:14:44,161 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:14:44,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:14:44,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:14:44,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:14:44,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:14:44,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:14:44,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:14:44,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:14:44,163 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:14:44,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:14:44,163 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:14:44,163 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:14:44,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:14:44,164 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:14:44,164 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:14:44,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:14:44,164 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:14:44,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:14:44,165 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:14:44,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:14:44,165 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-13 21:14:44,165 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:14:44,165 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:14:44,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:14:44,166 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:14:44,167 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:14:44,167 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:14:44,167 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:14:44,167 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:14:44,167 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:14:44,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:14:44,168 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:14:44,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:14:44,168 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:14:44,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:14:44,169 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:14:44,170 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:14:44,170 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:14:44,170 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:14:44,170 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:14:44,170 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:14:44,171 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:14:44,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:14:44,171 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:14:44,172 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:14:44,172 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:14:44,173 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:14:44,173 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:14:44,174 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:14:44,174 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:14:44,174 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:14:44,175 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:14:44,175 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:14:44,175 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-13 21:14:44,175 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:14:44,175 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:14:44,175 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:14:44,176 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:14:44,176 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:14:44,176 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:14:44,176 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:14:44,176 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:14:44,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:14:44,177 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:14:44,177 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:14:44,177 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:14:44,177 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:14:44,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:14:44,178 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:14:44,178 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:14:44,178 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:14:44,178 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:14:44,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:14:44,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:14:44,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:14:44,179 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:14:44,179 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:14:44,180 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:14:44,180 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:14:44,180 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:14:44,180 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:14:44,181 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:14:44,181 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:14:44,181 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:14:44,181 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:14:44,182 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:14:44,183 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:14:44,183 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:14:44,183 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:14:44,183 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:14:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:14:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:14:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:14:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:14:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:14:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:14:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:14:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:14:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:14:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:14:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:14:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:14:44,190 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:14:44,190 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:14:44,190 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:14:44,191 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:14:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:14:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:14:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:14:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:14:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:14:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:14:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:14:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:14:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:14:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:14:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:14:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:14:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:14:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:14:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:14:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:14:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:14:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:14:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:14:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:14:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:14:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:14:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:14:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:14:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:14:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:14:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:14:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:14:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:14:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:14:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:14:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:14:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:14:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:14:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:14:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:14:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:14:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:14:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:14:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:14:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:14:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:14:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:14:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:14:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:14:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:14:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:14:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:14:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:14:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:14:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:14:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:14:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:14:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-13 21:14:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:14:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:14:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:14:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:14:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:14:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:14:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:14:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:14:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:14:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:14:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:14:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:14:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:14:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:14:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:14:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:14:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:14:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:14:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:14:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:14:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:14:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:14:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:14:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:14:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:14:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:14:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-13 21:14:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:14:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:14:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:14:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:14:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:14:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:14:46,227 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:14:46,228 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:14:46,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:46 BoogieIcfgContainer [2019-10-13 21:14:46,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:14:46,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:14:46,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:14:46,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:14:46,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:14:42" (1/3) ... [2019-10-13 21:14:46,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a93950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:46, skipping insertion in model container [2019-10-13 21:14:46,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (2/3) ... [2019-10-13 21:14:46,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a93950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:46, skipping insertion in model container [2019-10-13 21:14:46,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:46" (3/3) ... [2019-10-13 21:14:46,242 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product18.cil.c [2019-10-13 21:14:46,253 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:14:46,266 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:14:46,279 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:14:46,325 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:14:46,325 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:14:46,326 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:14:46,326 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:14:46,326 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:14:46,326 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:14:46,326 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:14:46,326 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:14:46,370 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states. [2019-10-13 21:14:46,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 21:14:46,407 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:46,412 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:46,415 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:46,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:46,423 INFO L82 PathProgramCache]: Analyzing trace with hash 4882894, now seen corresponding path program 1 times [2019-10-13 21:14:46,434 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:46,434 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045020178] [2019-10-13 21:14:46,435 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:46,435 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:46,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:47,126 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:47,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045020178] [2019-10-13 21:14:47,128 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:47,128 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:14:47,129 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063955062] [2019-10-13 21:14:47,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:14:47,138 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:47,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:14:47,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:14:47,155 INFO L87 Difference]: Start difference. First operand 484 states. Second operand 2 states. [2019-10-13 21:14:47,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:47,229 INFO L93 Difference]: Finished difference Result 676 states and 891 transitions. [2019-10-13 21:14:47,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:14:47,230 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 179 [2019-10-13 21:14:47,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:47,272 INFO L225 Difference]: With dead ends: 676 [2019-10-13 21:14:47,272 INFO L226 Difference]: Without dead ends: 444 [2019-10-13 21:14:47,282 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:14:47,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2019-10-13 21:14:47,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2019-10-13 21:14:47,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2019-10-13 21:14:47,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 588 transitions. [2019-10-13 21:14:47,376 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 588 transitions. Word has length 179 [2019-10-13 21:14:47,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:47,379 INFO L462 AbstractCegarLoop]: Abstraction has 444 states and 588 transitions. [2019-10-13 21:14:47,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:14:47,379 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 588 transitions. [2019-10-13 21:14:47,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-13 21:14:47,384 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:47,384 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:47,384 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:47,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:47,385 INFO L82 PathProgramCache]: Analyzing trace with hash -372709569, now seen corresponding path program 1 times [2019-10-13 21:14:47,385 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:47,385 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708413069] [2019-10-13 21:14:47,386 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:47,386 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:47,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:47,579 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708413069] [2019-10-13 21:14:47,580 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:47,580 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:47,580 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152412924] [2019-10-13 21:14:47,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:47,589 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:47,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:47,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:47,590 INFO L87 Difference]: Start difference. First operand 444 states and 588 transitions. Second operand 3 states. [2019-10-13 21:14:47,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:47,650 INFO L93 Difference]: Finished difference Result 659 states and 856 transitions. [2019-10-13 21:14:47,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:47,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2019-10-13 21:14:47,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:47,655 INFO L225 Difference]: With dead ends: 659 [2019-10-13 21:14:47,655 INFO L226 Difference]: Without dead ends: 447 [2019-10-13 21:14:47,657 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:47,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2019-10-13 21:14:47,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 446. [2019-10-13 21:14:47,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2019-10-13 21:14:47,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 590 transitions. [2019-10-13 21:14:47,686 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 590 transitions. Word has length 180 [2019-10-13 21:14:47,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:47,687 INFO L462 AbstractCegarLoop]: Abstraction has 446 states and 590 transitions. [2019-10-13 21:14:47,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:47,687 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 590 transitions. [2019-10-13 21:14:47,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-13 21:14:47,694 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:47,694 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:47,694 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:47,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:47,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1430696527, now seen corresponding path program 1 times [2019-10-13 21:14:47,695 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:47,695 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735771833] [2019-10-13 21:14:47,695 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:47,695 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:47,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:47,935 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 21:14:47,935 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735771833] [2019-10-13 21:14:47,935 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:47,935 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:47,936 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108626666] [2019-10-13 21:14:47,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:47,943 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:47,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:47,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:47,943 INFO L87 Difference]: Start difference. First operand 446 states and 590 transitions. Second operand 3 states. [2019-10-13 21:14:47,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:47,991 INFO L93 Difference]: Finished difference Result 868 states and 1178 transitions. [2019-10-13 21:14:47,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:47,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2019-10-13 21:14:47,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:48,001 INFO L225 Difference]: With dead ends: 868 [2019-10-13 21:14:48,001 INFO L226 Difference]: Without dead ends: 487 [2019-10-13 21:14:48,004 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:48,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2019-10-13 21:14:48,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 486. [2019-10-13 21:14:48,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2019-10-13 21:14:48,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 659 transitions. [2019-10-13 21:14:48,044 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 659 transitions. Word has length 190 [2019-10-13 21:14:48,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:48,045 INFO L462 AbstractCegarLoop]: Abstraction has 486 states and 659 transitions. [2019-10-13 21:14:48,045 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:48,045 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 659 transitions. [2019-10-13 21:14:48,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-13 21:14:48,049 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:48,050 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:48,050 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:48,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:48,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1249737572, now seen corresponding path program 1 times [2019-10-13 21:14:48,051 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:48,051 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117781393] [2019-10-13 21:14:48,051 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:48,051 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:48,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:48,203 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 21:14:48,204 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117781393] [2019-10-13 21:14:48,204 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:48,205 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:48,205 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841786449] [2019-10-13 21:14:48,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:48,206 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:48,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:48,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:48,207 INFO L87 Difference]: Start difference. First operand 486 states and 659 transitions. Second operand 3 states. [2019-10-13 21:14:48,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:48,256 INFO L93 Difference]: Finished difference Result 985 states and 1380 transitions. [2019-10-13 21:14:48,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:48,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2019-10-13 21:14:48,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:48,265 INFO L225 Difference]: With dead ends: 985 [2019-10-13 21:14:48,265 INFO L226 Difference]: Without dead ends: 564 [2019-10-13 21:14:48,267 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:48,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-10-13 21:14:48,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 563. [2019-10-13 21:14:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2019-10-13 21:14:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 791 transitions. [2019-10-13 21:14:48,309 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 791 transitions. Word has length 191 [2019-10-13 21:14:48,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:48,310 INFO L462 AbstractCegarLoop]: Abstraction has 563 states and 791 transitions. [2019-10-13 21:14:48,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:48,311 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 791 transitions. [2019-10-13 21:14:48,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-10-13 21:14:48,318 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:48,319 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:48,319 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:48,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:48,320 INFO L82 PathProgramCache]: Analyzing trace with hash -774880689, now seen corresponding path program 1 times [2019-10-13 21:14:48,321 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:48,321 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735846020] [2019-10-13 21:14:48,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:48,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:48,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:48,722 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 21:14:48,722 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735846020] [2019-10-13 21:14:48,723 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:48,723 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:48,724 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770842006] [2019-10-13 21:14:48,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:48,725 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:48,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:48,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:48,726 INFO L87 Difference]: Start difference. First operand 563 states and 791 transitions. Second operand 3 states. [2019-10-13 21:14:48,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:48,780 INFO L93 Difference]: Finished difference Result 1210 states and 1766 transitions. [2019-10-13 21:14:48,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:48,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2019-10-13 21:14:48,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:48,788 INFO L225 Difference]: With dead ends: 1210 [2019-10-13 21:14:48,789 INFO L226 Difference]: Without dead ends: 712 [2019-10-13 21:14:48,792 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:48,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2019-10-13 21:14:48,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 711. [2019-10-13 21:14:48,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 711 states. [2019-10-13 21:14:48,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1043 transitions. [2019-10-13 21:14:48,864 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1043 transitions. Word has length 192 [2019-10-13 21:14:48,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:48,865 INFO L462 AbstractCegarLoop]: Abstraction has 711 states and 1043 transitions. [2019-10-13 21:14:48,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1043 transitions. [2019-10-13 21:14:48,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-13 21:14:48,875 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:48,876 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:48,876 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:48,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:48,877 INFO L82 PathProgramCache]: Analyzing trace with hash 569944220, now seen corresponding path program 1 times [2019-10-13 21:14:48,878 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:48,878 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704945879] [2019-10-13 21:14:48,878 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:48,879 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:48,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:49,067 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 21:14:49,068 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704945879] [2019-10-13 21:14:49,069 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:49,069 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:49,069 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149246213] [2019-10-13 21:14:49,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:49,070 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:49,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:49,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:49,071 INFO L87 Difference]: Start difference. First operand 711 states and 1043 transitions. Second operand 3 states. [2019-10-13 21:14:49,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:49,125 INFO L93 Difference]: Finished difference Result 1642 states and 2502 transitions. [2019-10-13 21:14:49,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:49,125 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-10-13 21:14:49,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:49,132 INFO L225 Difference]: With dead ends: 1642 [2019-10-13 21:14:49,133 INFO L226 Difference]: Without dead ends: 996 [2019-10-13 21:14:49,135 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:49,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2019-10-13 21:14:49,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 995. [2019-10-13 21:14:49,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2019-10-13 21:14:49,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1523 transitions. [2019-10-13 21:14:49,222 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1523 transitions. Word has length 193 [2019-10-13 21:14:49,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:49,224 INFO L462 AbstractCegarLoop]: Abstraction has 995 states and 1523 transitions. [2019-10-13 21:14:49,224 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:49,224 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1523 transitions. [2019-10-13 21:14:49,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-13 21:14:49,230 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:49,230 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:49,231 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:49,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:49,232 INFO L82 PathProgramCache]: Analyzing trace with hash 2027889146, now seen corresponding path program 1 times [2019-10-13 21:14:49,232 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:49,232 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082792059] [2019-10-13 21:14:49,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:49,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:49,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:14:49,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082792059] [2019-10-13 21:14:49,460 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:49,465 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:14:49,465 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124587571] [2019-10-13 21:14:49,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:14:49,467 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:49,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:14:49,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:14:49,468 INFO L87 Difference]: Start difference. First operand 995 states and 1523 transitions. Second operand 8 states. [2019-10-13 21:14:49,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:49,571 INFO L93 Difference]: Finished difference Result 1194 states and 1776 transitions. [2019-10-13 21:14:49,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:14:49,572 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2019-10-13 21:14:49,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:49,581 INFO L225 Difference]: With dead ends: 1194 [2019-10-13 21:14:49,582 INFO L226 Difference]: Without dead ends: 995 [2019-10-13 21:14:49,583 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:14:49,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2019-10-13 21:14:49,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 995. [2019-10-13 21:14:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2019-10-13 21:14:49,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1522 transitions. [2019-10-13 21:14:49,640 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1522 transitions. Word has length 196 [2019-10-13 21:14:49,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:49,643 INFO L462 AbstractCegarLoop]: Abstraction has 995 states and 1522 transitions. [2019-10-13 21:14:49,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:14:49,643 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1522 transitions. [2019-10-13 21:14:49,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-13 21:14:49,653 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:49,654 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:49,654 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:49,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:49,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1861004252, now seen corresponding path program 1 times [2019-10-13 21:14:49,655 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:49,656 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367794304] [2019-10-13 21:14:49,656 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:49,656 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:49,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:14:49,970 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367794304] [2019-10-13 21:14:49,971 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:49,971 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:14:49,971 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17934770] [2019-10-13 21:14:49,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:14:49,972 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:49,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:14:49,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:14:49,973 INFO L87 Difference]: Start difference. First operand 995 states and 1522 transitions. Second operand 7 states. [2019-10-13 21:14:52,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:52,159 INFO L93 Difference]: Finished difference Result 1416 states and 2054 transitions. [2019-10-13 21:14:52,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:14:52,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2019-10-13 21:14:52,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:52,168 INFO L225 Difference]: With dead ends: 1416 [2019-10-13 21:14:52,169 INFO L226 Difference]: Without dead ends: 1209 [2019-10-13 21:14:52,173 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:14:52,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2019-10-13 21:14:52,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1200. [2019-10-13 21:14:52,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2019-10-13 21:14:52,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1779 transitions. [2019-10-13 21:14:52,250 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1779 transitions. Word has length 203 [2019-10-13 21:14:52,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:52,251 INFO L462 AbstractCegarLoop]: Abstraction has 1200 states and 1779 transitions. [2019-10-13 21:14:52,251 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:14:52,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1779 transitions. [2019-10-13 21:14:52,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:14:52,263 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:52,263 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:52,264 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:52,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:52,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1188466073, now seen corresponding path program 1 times [2019-10-13 21:14:52,265 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:52,265 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818860828] [2019-10-13 21:14:52,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:52,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:52,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:52,743 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:14:52,744 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818860828] [2019-10-13 21:14:52,745 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:52,745 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2019-10-13 21:14:52,745 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016739463] [2019-10-13 21:14:52,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-13 21:14:52,746 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:52,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-13 21:14:52,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:14:52,747 INFO L87 Difference]: Start difference. First operand 1200 states and 1779 transitions. Second operand 24 states. [2019-10-13 21:14:53,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:53,449 INFO L93 Difference]: Finished difference Result 1692 states and 2405 transitions. [2019-10-13 21:14:53,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-13 21:14:53,450 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 204 [2019-10-13 21:14:53,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:53,458 INFO L225 Difference]: With dead ends: 1692 [2019-10-13 21:14:53,458 INFO L226 Difference]: Without dead ends: 1242 [2019-10-13 21:14:53,460 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=1037, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:14:53,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2019-10-13 21:14:53,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1238. [2019-10-13 21:14:53,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1238 states. [2019-10-13 21:14:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1823 transitions. [2019-10-13 21:14:53,543 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1823 transitions. Word has length 204 [2019-10-13 21:14:53,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:53,544 INFO L462 AbstractCegarLoop]: Abstraction has 1238 states and 1823 transitions. [2019-10-13 21:14:53,544 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-13 21:14:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1823 transitions. [2019-10-13 21:14:53,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-13 21:14:53,553 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:53,553 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:53,553 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:53,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:53,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1681156270, now seen corresponding path program 1 times [2019-10-13 21:14:53,554 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:53,554 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994421739] [2019-10-13 21:14:53,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:53,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:53,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:14:53,819 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994421739] [2019-10-13 21:14:53,820 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:53,820 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:14:53,821 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006153957] [2019-10-13 21:14:53,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:14:53,822 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:53,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:14:53,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:14:53,823 INFO L87 Difference]: Start difference. First operand 1238 states and 1823 transitions. Second operand 8 states. [2019-10-13 21:14:58,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:58,111 INFO L93 Difference]: Finished difference Result 2604 states and 3552 transitions. [2019-10-13 21:14:58,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:14:58,111 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 235 [2019-10-13 21:14:58,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:58,136 INFO L225 Difference]: With dead ends: 2604 [2019-10-13 21:14:58,137 INFO L226 Difference]: Without dead ends: 2176 [2019-10-13 21:14:58,144 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:14:58,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2019-10-13 21:14:58,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2162. [2019-10-13 21:14:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2162 states. [2019-10-13 21:14:58,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 2999 transitions. [2019-10-13 21:14:58,278 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 2999 transitions. Word has length 235 [2019-10-13 21:14:58,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:58,281 INFO L462 AbstractCegarLoop]: Abstraction has 2162 states and 2999 transitions. [2019-10-13 21:14:58,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:14:58,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 2999 transitions. [2019-10-13 21:14:58,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-13 21:14:58,295 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:58,295 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:58,296 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:58,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:58,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1634971345, now seen corresponding path program 1 times [2019-10-13 21:14:58,297 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:58,297 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639609537] [2019-10-13 21:14:58,297 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:58,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:58,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:14:58,728 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639609537] [2019-10-13 21:14:58,728 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:58,729 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-13 21:14:58,729 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204034076] [2019-10-13 21:14:58,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 21:14:58,730 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:58,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 21:14:58,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:14:58,731 INFO L87 Difference]: Start difference. First operand 2162 states and 2999 transitions. Second operand 18 states. [2019-10-13 21:14:59,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:59,116 INFO L93 Difference]: Finished difference Result 2816 states and 3830 transitions. [2019-10-13 21:14:59,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 21:14:59,117 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 236 [2019-10-13 21:14:59,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:59,130 INFO L225 Difference]: With dead ends: 2816 [2019-10-13 21:14:59,130 INFO L226 Difference]: Without dead ends: 1797 [2019-10-13 21:14:59,134 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:14:59,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2019-10-13 21:14:59,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1791. [2019-10-13 21:14:59,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1791 states. [2019-10-13 21:14:59,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2541 transitions. [2019-10-13 21:14:59,230 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2541 transitions. Word has length 236 [2019-10-13 21:14:59,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:59,232 INFO L462 AbstractCegarLoop]: Abstraction has 1791 states and 2541 transitions. [2019-10-13 21:14:59,232 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 21:14:59,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2541 transitions. [2019-10-13 21:14:59,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-13 21:14:59,243 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:59,243 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:59,244 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:59,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:59,244 INFO L82 PathProgramCache]: Analyzing trace with hash 210736296, now seen corresponding path program 1 times [2019-10-13 21:14:59,244 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:59,245 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573359592] [2019-10-13 21:14:59,245 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:59,245 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:59,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:14:59,510 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573359592] [2019-10-13 21:14:59,511 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102048355] [2019-10-13 21:14:59,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:00,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 2774 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:00,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:00,405 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:15:00,405 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:00,861 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:00,934 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:00,992 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:01,166 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:01,166 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-13 21:15:01,166 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310438833] [2019-10-13 21:15:01,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:15:01,167 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:01,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:15:01,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:15:01,168 INFO L87 Difference]: Start difference. First operand 1791 states and 2541 transitions. Second operand 9 states. [2019-10-13 21:15:02,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:02,520 INFO L93 Difference]: Finished difference Result 3560 states and 5062 transitions. [2019-10-13 21:15:02,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:15:02,521 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 245 [2019-10-13 21:15:02,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:02,534 INFO L225 Difference]: With dead ends: 3560 [2019-10-13 21:15:02,534 INFO L226 Difference]: Without dead ends: 1805 [2019-10-13 21:15:02,548 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 476 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:15:02,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2019-10-13 21:15:02,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1805. [2019-10-13 21:15:02,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1805 states. [2019-10-13 21:15:02,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2559 transitions. [2019-10-13 21:15:02,705 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2559 transitions. Word has length 245 [2019-10-13 21:15:02,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:02,705 INFO L462 AbstractCegarLoop]: Abstraction has 1805 states and 2559 transitions. [2019-10-13 21:15:02,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:15:02,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2559 transitions. [2019-10-13 21:15:02,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-10-13 21:15:02,715 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:02,715 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:02,927 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:02,928 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:02,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:02,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1010897091, now seen corresponding path program 1 times [2019-10-13 21:15:02,928 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:02,929 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702464139] [2019-10-13 21:15:02,929 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:03,211 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:03,212 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702464139] [2019-10-13 21:15:03,212 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499975799] [2019-10-13 21:15:03,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:04,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 2775 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:04,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:04,352 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:15:04,353 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:04,681 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:04,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:04,800 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:04,801 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:04,801 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:15:04,802 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077488713] [2019-10-13 21:15:04,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:04,802 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:04,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:04,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:15:04,804 INFO L87 Difference]: Start difference. First operand 1805 states and 2559 transitions. Second operand 7 states. [2019-10-13 21:15:06,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:06,046 INFO L93 Difference]: Finished difference Result 3561 states and 5072 transitions. [2019-10-13 21:15:06,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:06,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2019-10-13 21:15:06,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:06,059 INFO L225 Difference]: With dead ends: 3561 [2019-10-13 21:15:06,059 INFO L226 Difference]: Without dead ends: 1807 [2019-10-13 21:15:06,066 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 483 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:15:06,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2019-10-13 21:15:06,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1807. [2019-10-13 21:15:06,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1807 states. [2019-10-13 21:15:06,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2562 transitions. [2019-10-13 21:15:06,157 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2562 transitions. Word has length 246 [2019-10-13 21:15:06,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:06,157 INFO L462 AbstractCegarLoop]: Abstraction has 1807 states and 2562 transitions. [2019-10-13 21:15:06,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:06,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2562 transitions. [2019-10-13 21:15:06,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-10-13 21:15:06,165 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:06,166 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:06,374 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:06,374 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:06,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:06,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1659960313, now seen corresponding path program 1 times [2019-10-13 21:15:06,376 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:06,377 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597962368] [2019-10-13 21:15:06,377 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:06,377 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:06,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:06,676 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:06,676 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597962368] [2019-10-13 21:15:06,676 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479677871] [2019-10-13 21:15:06,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:07,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 2776 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:07,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:07,645 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:08,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:08,075 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:08,138 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:08,283 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:08,284 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:08,284 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-13 21:15:08,284 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844295718] [2019-10-13 21:15:08,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:08,289 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:08,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:08,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:15:08,290 INFO L87 Difference]: Start difference. First operand 1807 states and 2562 transitions. Second operand 16 states. [2019-10-13 21:15:10,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:10,250 INFO L93 Difference]: Finished difference Result 3565 states and 5066 transitions. [2019-10-13 21:15:10,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:10,250 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 247 [2019-10-13 21:15:10,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:10,264 INFO L225 Difference]: With dead ends: 3565 [2019-10-13 21:15:10,264 INFO L226 Difference]: Without dead ends: 1819 [2019-10-13 21:15:10,271 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 480 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:15:10,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2019-10-13 21:15:10,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1817. [2019-10-13 21:15:10,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1817 states. [2019-10-13 21:15:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2573 transitions. [2019-10-13 21:15:10,366 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2573 transitions. Word has length 247 [2019-10-13 21:15:10,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:10,367 INFO L462 AbstractCegarLoop]: Abstraction has 1817 states and 2573 transitions. [2019-10-13 21:15:10,367 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:15:10,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2573 transitions. [2019-10-13 21:15:10,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2019-10-13 21:15:10,375 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:10,375 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:10,583 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:10,584 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:10,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:10,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1908875604, now seen corresponding path program 2 times [2019-10-13 21:15:10,585 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:10,593 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925303949] [2019-10-13 21:15:10,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:10,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:10,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:11,180 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925303949] [2019-10-13 21:15:11,181 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013324387] [2019-10-13 21:15:11,181 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:11,798 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:15:11,798 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:11,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:11,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:12,129 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:12,129 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:12,457 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:12,534 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:15:12,618 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:12,618 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [29] total 39 [2019-10-13 21:15:12,618 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093695954] [2019-10-13 21:15:12,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:15:12,620 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:12,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:15:12,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1385, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:15:12,621 INFO L87 Difference]: Start difference. First operand 1817 states and 2573 transitions. Second operand 12 states.