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_spec4_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:15:08,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:15:08,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:15:08,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:15:08,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:15:08,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:15:08,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:15:08,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:15:08,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:15:08,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:15:08,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:15:08,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:15:08,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:15:08,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:15:08,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:15:08,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:15:08,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:15:08,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:15:08,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:15:08,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:15:08,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:15:08,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:15:08,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:15:08,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:15:08,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:15:08,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:15:08,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:15:08,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:15:08,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:15:08,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:15:08,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:15:08,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:15:08,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:15:08,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:15:08,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:15:08,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:15:08,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:15:08,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:15:08,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:15:08,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:15:08,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:15:08,858 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 [2019-10-15 01:15:08,877 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:15:08,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:15:08,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:15:08,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:15:08,881 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:15:08,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:15:08,881 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:15:08,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:15:08,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:15:08,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:15:08,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:15:08,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:15:08,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:15:08,884 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:15:08,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:15:08,885 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:15:08,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:15:08,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:15:08,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:15:08,885 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:15:08,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:15:08,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:08,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:15:08,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:15:08,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:15:08,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:15:08,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:15:08,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:15:08,887 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 [2019-10-15 01:15:09,173 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:15:09,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:15:09,191 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:15:09,193 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:15:09,193 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:15:09,194 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product18.cil.c [2019-10-15 01:15:09,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a06f13fd/7b080f1d63d840229c4d51afef740b02/FLAG9c5394a63 [2019-10-15 01:15:09,908 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:15:09,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product18.cil.c [2019-10-15 01:15:09,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a06f13fd/7b080f1d63d840229c4d51afef740b02/FLAG9c5394a63 [2019-10-15 01:15:10,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a06f13fd/7b080f1d63d840229c4d51afef740b02 [2019-10-15 01:15:10,117 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:15:10,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:15:10,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:10,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:15:10,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:15:10,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:10" (1/1) ... [2019-10-15 01:15:10,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6608a0f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:10, skipping insertion in model container [2019-10-15 01:15:10,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:10" (1/1) ... [2019-10-15 01:15:10,139 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:15:10,238 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:15:10,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:10,965 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:15:11,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:11,196 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:15:11,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:11 WrapperNode [2019-10-15 01:15:11,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:11,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:15:11,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:15:11,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:15:11,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:11" (1/1) ... [2019-10-15 01:15:11,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:11" (1/1) ... [2019-10-15 01:15:11,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:11" (1/1) ... [2019-10-15 01:15:11,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:11" (1/1) ... [2019-10-15 01:15:11,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:11" (1/1) ... [2019-10-15 01:15:11,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:11" (1/1) ... [2019-10-15 01:15:11,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:11" (1/1) ... [2019-10-15 01:15:11,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:15:11,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:15:11,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:15:11,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:15:11,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:15:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:15:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:15:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:15:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:15:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:15:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:15:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:15:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:15:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:15:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:15:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:15:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:15:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:15:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:15:11,443 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:15:11,443 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:15:11,443 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:15:11,443 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:15:11,443 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:15:11,444 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:15:11,444 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:15:11,444 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:15:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:15:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:15:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:15:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:15:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:15:11,446 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:15:11,446 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:15:11,446 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:15:11,446 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:15:11,446 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:15:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:15:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:15:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:15:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:15:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:15:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:15:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:15:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:15:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:15:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:15:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:15:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:15:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:15:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:15:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:15:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:15:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:15:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:15:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:15:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:15:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:15:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:15:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:15:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:15:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:15:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:15:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:15:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:15:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:15:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:15:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:15:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:15:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:15:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:15:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:15:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:15:11,454 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:15:11,454 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-15 01:15:11,454 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:15:11,454 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:15:11,454 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:15:11,454 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:15:11,455 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:15:11,455 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:15:11,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:11,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:11,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:11,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:15:11,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:15:11,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:15:11,456 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:15:11,456 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:15:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:15:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:15:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:15:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:15:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:15:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:15:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-15 01:15:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:15:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:15:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:15:11,459 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:15:11,459 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:15:11,459 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:15:11,459 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:15:11,459 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:15:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:15:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:15:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:15:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:15:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:15:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:15:11,461 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:15:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:15:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:15:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:15:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:15:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:15:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:15:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:15:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:15:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:15:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:15:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:15:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:15:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:15:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:15:11,463 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:15:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:15:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:15:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:15:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:15:11,464 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:15:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:15:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:15:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:15:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:15:11,465 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:15:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:15:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:15:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:15:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:15:11,466 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:15:11,467 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:15:11,467 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:15:11,467 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:15:11,467 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:15:11,467 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:15:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:15:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:15:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:15:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:15:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:15:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:15:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:15:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:15:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:15:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:15:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:15:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:15:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:15:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:15:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:15:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:15:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:15:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:15:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:15:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:15:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:15:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:15:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:15:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:15:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:15:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:15:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:15:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:15:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:15:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:15:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:15:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:15:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:15:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:15:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:15:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:15:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:15:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:15:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:15:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:15:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:15:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:15:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:15:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:15:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:15:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:15:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:15:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:15:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:15:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:15:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:15:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:15:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-15 01:15:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:15:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:15:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:15:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:15:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:15:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:15:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:15:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:15:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:15:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:15:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:15:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:15:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:15:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:15:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:15:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:15:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:15:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:15:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:15:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:15:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:15:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:15:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:15:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:15:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:15:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-15 01:15:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:15:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:15:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:15:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:15:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:15:13,852 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:15:13,852 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:15:13,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:13 BoogieIcfgContainer [2019-10-15 01:15:13,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:15:13,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:15:13,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:15:13,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:15:13,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:15:10" (1/3) ... [2019-10-15 01:15:13,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e072849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:13, skipping insertion in model container [2019-10-15 01:15:13,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:11" (2/3) ... [2019-10-15 01:15:13,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e072849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:13, skipping insertion in model container [2019-10-15 01:15:13,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:13" (3/3) ... [2019-10-15 01:15:13,865 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product18.cil.c [2019-10-15 01:15:13,876 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:15:13,887 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:15:13,899 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:15:13,939 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:15:13,939 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:15:13,939 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:15:13,940 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:15:13,940 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:15:13,940 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:15:13,940 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:15:13,940 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:15:13,978 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states. [2019-10-15 01:15:14,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-15 01:15:14,012 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:14,014 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:14,019 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:14,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:14,026 INFO L82 PathProgramCache]: Analyzing trace with hash -463084793, now seen corresponding path program 1 times [2019-10-15 01:15:14,038 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:14,039 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378649736] [2019-10-15 01:15:14,039 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:14,039 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:14,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:14,682 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:14,683 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378649736] [2019-10-15 01:15:14,684 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:14,684 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:15:14,685 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720770554] [2019-10-15 01:15:14,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:15:14,694 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:14,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:15:14,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:14,712 INFO L87 Difference]: Start difference. First operand 482 states. Second operand 2 states. [2019-10-15 01:15:14,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:14,813 INFO L93 Difference]: Finished difference Result 662 states and 869 transitions. [2019-10-15 01:15:14,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:15:14,815 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 148 [2019-10-15 01:15:14,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:14,842 INFO L225 Difference]: With dead ends: 662 [2019-10-15 01:15:14,842 INFO L226 Difference]: Without dead ends: 437 [2019-10-15 01:15:14,854 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 [2019-10-15 01:15:14,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2019-10-15 01:15:14,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2019-10-15 01:15:14,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2019-10-15 01:15:14,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 579 transitions. [2019-10-15 01:15:14,988 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 579 transitions. Word has length 148 [2019-10-15 01:15:14,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:14,990 INFO L462 AbstractCegarLoop]: Abstraction has 437 states and 579 transitions. [2019-10-15 01:15:14,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:15:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 579 transitions. [2019-10-15 01:15:14,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:15:14,994 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:14,995 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:14,995 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:14,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:14,995 INFO L82 PathProgramCache]: Analyzing trace with hash -348931153, now seen corresponding path program 1 times [2019-10-15 01:15:14,996 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:14,996 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344459923] [2019-10-15 01:15:14,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:14,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:14,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:15,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344459923] [2019-10-15 01:15:15,238 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:15,238 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:15,238 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568102832] [2019-10-15 01:15:15,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:15,248 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:15,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:15,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:15,249 INFO L87 Difference]: Start difference. First operand 437 states and 579 transitions. Second operand 3 states. [2019-10-15 01:15:15,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:15,297 INFO L93 Difference]: Finished difference Result 645 states and 838 transitions. [2019-10-15 01:15:15,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:15,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-15 01:15:15,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:15,303 INFO L225 Difference]: With dead ends: 645 [2019-10-15 01:15:15,303 INFO L226 Difference]: Without dead ends: 440 [2019-10-15 01:15:15,306 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 [2019-10-15 01:15:15,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2019-10-15 01:15:15,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 439. [2019-10-15 01:15:15,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2019-10-15 01:15:15,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 581 transitions. [2019-10-15 01:15:15,325 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 581 transitions. Word has length 149 [2019-10-15 01:15:15,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:15,327 INFO L462 AbstractCegarLoop]: Abstraction has 439 states and 581 transitions. [2019-10-15 01:15:15,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:15,327 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 581 transitions. [2019-10-15 01:15:15,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-15 01:15:15,332 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:15,332 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:15,332 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:15,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:15,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1648155391, now seen corresponding path program 1 times [2019-10-15 01:15:15,333 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:15,333 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329242464] [2019-10-15 01:15:15,334 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:15,334 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:15,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:15,546 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329242464] [2019-10-15 01:15:15,546 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:15,546 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:15,546 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500317756] [2019-10-15 01:15:15,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:15,550 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:15,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:15,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:15,550 INFO L87 Difference]: Start difference. First operand 439 states and 581 transitions. Second operand 3 states. [2019-10-15 01:15:15,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:15,592 INFO L93 Difference]: Finished difference Result 854 states and 1160 transitions. [2019-10-15 01:15:15,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:15,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-15 01:15:15,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:15,601 INFO L225 Difference]: With dead ends: 854 [2019-10-15 01:15:15,602 INFO L226 Difference]: Without dead ends: 480 [2019-10-15 01:15:15,608 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 [2019-10-15 01:15:15,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2019-10-15 01:15:15,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2019-10-15 01:15:15,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2019-10-15 01:15:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 650 transitions. [2019-10-15 01:15:15,646 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 650 transitions. Word has length 159 [2019-10-15 01:15:15,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:15,647 INFO L462 AbstractCegarLoop]: Abstraction has 479 states and 650 transitions. [2019-10-15 01:15:15,647 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:15,648 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 650 transitions. [2019-10-15 01:15:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-15 01:15:15,651 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:15,651 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:15,651 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:15,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:15,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1008974663, now seen corresponding path program 1 times [2019-10-15 01:15:15,652 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:15,653 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281636381] [2019-10-15 01:15:15,653 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:15,653 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:15,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:15,820 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:15,821 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281636381] [2019-10-15 01:15:15,821 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:15,821 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:15,822 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650520771] [2019-10-15 01:15:15,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:15,823 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:15,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:15,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:15,824 INFO L87 Difference]: Start difference. First operand 479 states and 650 transitions. Second operand 3 states. [2019-10-15 01:15:15,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:15,864 INFO L93 Difference]: Finished difference Result 971 states and 1362 transitions. [2019-10-15 01:15:15,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:15,865 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2019-10-15 01:15:15,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:15,869 INFO L225 Difference]: With dead ends: 971 [2019-10-15 01:15:15,869 INFO L226 Difference]: Without dead ends: 557 [2019-10-15 01:15:15,872 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 [2019-10-15 01:15:15,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2019-10-15 01:15:15,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 556. [2019-10-15 01:15:15,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2019-10-15 01:15:15,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 782 transitions. [2019-10-15 01:15:15,899 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 782 transitions. Word has length 160 [2019-10-15 01:15:15,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:15,899 INFO L462 AbstractCegarLoop]: Abstraction has 556 states and 782 transitions. [2019-10-15 01:15:15,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:15,900 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 782 transitions. [2019-10-15 01:15:15,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:15:15,904 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:15,905 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:15,905 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:15,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:15,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1166153695, now seen corresponding path program 1 times [2019-10-15 01:15:15,906 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:15,906 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666092417] [2019-10-15 01:15:15,906 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:15,907 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:15,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:16,129 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666092417] [2019-10-15 01:15:16,130 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:16,130 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:16,130 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161592206] [2019-10-15 01:15:16,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:16,132 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:16,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:16,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:16,133 INFO L87 Difference]: Start difference. First operand 556 states and 782 transitions. Second operand 3 states. [2019-10-15 01:15:16,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:16,189 INFO L93 Difference]: Finished difference Result 1196 states and 1748 transitions. [2019-10-15 01:15:16,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:16,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-15 01:15:16,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:16,199 INFO L225 Difference]: With dead ends: 1196 [2019-10-15 01:15:16,199 INFO L226 Difference]: Without dead ends: 705 [2019-10-15 01:15:16,202 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 [2019-10-15 01:15:16,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2019-10-15 01:15:16,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 704. [2019-10-15 01:15:16,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2019-10-15 01:15:16,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1034 transitions. [2019-10-15 01:15:16,267 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1034 transitions. Word has length 161 [2019-10-15 01:15:16,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:16,268 INFO L462 AbstractCegarLoop]: Abstraction has 704 states and 1034 transitions. [2019-10-15 01:15:16,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:16,269 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1034 transitions. [2019-10-15 01:15:16,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-15 01:15:16,377 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:16,377 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:16,378 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:16,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:16,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1633120217, now seen corresponding path program 1 times [2019-10-15 01:15:16,378 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:16,379 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512809017] [2019-10-15 01:15:16,379 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:16,379 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:16,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:16,530 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512809017] [2019-10-15 01:15:16,531 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:16,531 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:16,531 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448897110] [2019-10-15 01:15:16,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:16,532 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:16,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:16,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:16,533 INFO L87 Difference]: Start difference. First operand 704 states and 1034 transitions. Second operand 3 states. [2019-10-15 01:15:16,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:16,583 INFO L93 Difference]: Finished difference Result 1628 states and 2484 transitions. [2019-10-15 01:15:16,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:16,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-15 01:15:16,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:16,590 INFO L225 Difference]: With dead ends: 1628 [2019-10-15 01:15:16,591 INFO L226 Difference]: Without dead ends: 989 [2019-10-15 01:15:16,594 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 [2019-10-15 01:15:16,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2019-10-15 01:15:16,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 988. [2019-10-15 01:15:16,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2019-10-15 01:15:16,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1514 transitions. [2019-10-15 01:15:16,639 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1514 transitions. Word has length 162 [2019-10-15 01:15:16,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:16,641 INFO L462 AbstractCegarLoop]: Abstraction has 988 states and 1514 transitions. [2019-10-15 01:15:16,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:16,641 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1514 transitions. [2019-10-15 01:15:16,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-15 01:15:16,647 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:16,647 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:16,648 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:16,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:16,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1343280992, now seen corresponding path program 1 times [2019-10-15 01:15:16,648 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:16,649 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369195551] [2019-10-15 01:15:16,649 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:16,649 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:16,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:16,862 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:16,863 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369195551] [2019-10-15 01:15:16,863 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:16,863 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:15:16,863 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248029707] [2019-10-15 01:15:16,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:16,864 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:16,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:16,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:15:16,868 INFO L87 Difference]: Start difference. First operand 988 states and 1514 transitions. Second operand 7 states. [2019-10-15 01:15:19,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:19,608 INFO L93 Difference]: Finished difference Result 1390 states and 2021 transitions. [2019-10-15 01:15:19,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:15:19,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2019-10-15 01:15:19,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:19,616 INFO L225 Difference]: With dead ends: 1390 [2019-10-15 01:15:19,617 INFO L226 Difference]: Without dead ends: 1196 [2019-10-15 01:15:19,618 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:15:19,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2019-10-15 01:15:19,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1187. [2019-10-15 01:15:19,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1187 states. [2019-10-15 01:15:19,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1766 transitions. [2019-10-15 01:15:19,672 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1766 transitions. Word has length 165 [2019-10-15 01:15:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:19,673 INFO L462 AbstractCegarLoop]: Abstraction has 1187 states and 1766 transitions. [2019-10-15 01:15:19,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1766 transitions. [2019-10-15 01:15:19,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-15 01:15:19,678 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:19,678 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:19,679 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:19,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:19,679 INFO L82 PathProgramCache]: Analyzing trace with hash 217268504, now seen corresponding path program 1 times [2019-10-15 01:15:19,679 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:19,679 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642192033] [2019-10-15 01:15:19,680 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:19,680 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:19,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:19,946 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642192033] [2019-10-15 01:15:19,946 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:19,947 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-15 01:15:19,947 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259730331] [2019-10-15 01:15:19,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:15:19,948 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:19,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:15:19,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:15:19,948 INFO L87 Difference]: Start difference. First operand 1187 states and 1766 transitions. Second operand 16 states. [2019-10-15 01:15:20,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:20,371 INFO L93 Difference]: Finished difference Result 1636 states and 2340 transitions. [2019-10-15 01:15:20,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 01:15:20,371 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 166 [2019-10-15 01:15:20,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:20,380 INFO L225 Difference]: With dead ends: 1636 [2019-10-15 01:15:20,380 INFO L226 Difference]: Without dead ends: 1219 [2019-10-15 01:15:20,382 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-15 01:15:20,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2019-10-15 01:15:20,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1215. [2019-10-15 01:15:20,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2019-10-15 01:15:20,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1801 transitions. [2019-10-15 01:15:20,441 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1801 transitions. Word has length 166 [2019-10-15 01:15:20,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:20,442 INFO L462 AbstractCegarLoop]: Abstraction has 1215 states and 1801 transitions. [2019-10-15 01:15:20,442 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:15:20,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1801 transitions. [2019-10-15 01:15:20,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-15 01:15:20,448 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:20,448 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:20,448 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:20,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:20,449 INFO L82 PathProgramCache]: Analyzing trace with hash 138441481, now seen corresponding path program 1 times [2019-10-15 01:15:20,449 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:20,449 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709357416] [2019-10-15 01:15:20,449 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:20,449 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:20,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:20,626 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709357416] [2019-10-15 01:15:20,627 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:20,627 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:15:20,628 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201400740] [2019-10-15 01:15:20,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:15:20,629 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:20,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:15:20,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:15:20,630 INFO L87 Difference]: Start difference. First operand 1215 states and 1801 transitions. Second operand 8 states. [2019-10-15 01:15:21,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:21,706 INFO L93 Difference]: Finished difference Result 1756 states and 2491 transitions. [2019-10-15 01:15:21,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:21,707 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2019-10-15 01:15:21,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:21,718 INFO L225 Difference]: With dead ends: 1756 [2019-10-15 01:15:21,718 INFO L226 Difference]: Without dead ends: 1669 [2019-10-15 01:15:21,720 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:15:21,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2019-10-15 01:15:21,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1656. [2019-10-15 01:15:21,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1656 states. [2019-10-15 01:15:21,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2369 transitions. [2019-10-15 01:15:21,800 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2369 transitions. Word has length 175 [2019-10-15 01:15:21,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:21,801 INFO L462 AbstractCegarLoop]: Abstraction has 1656 states and 2369 transitions. [2019-10-15 01:15:21,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:15:21,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2369 transitions. [2019-10-15 01:15:21,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-15 01:15:21,808 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:21,808 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:21,809 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:21,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:21,809 INFO L82 PathProgramCache]: Analyzing trace with hash -868594112, now seen corresponding path program 1 times [2019-10-15 01:15:21,809 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:21,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182605329] [2019-10-15 01:15:21,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:21,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:21,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:22,105 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182605329] [2019-10-15 01:15:22,105 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:22,106 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-15 01:15:22,106 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317763790] [2019-10-15 01:15:22,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:15:22,107 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:22,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:15:22,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:15:22,108 INFO L87 Difference]: Start difference. First operand 1656 states and 2369 transitions. Second operand 15 states. [2019-10-15 01:15:22,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:22,640 INFO L93 Difference]: Finished difference Result 2067 states and 2886 transitions. [2019-10-15 01:15:22,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 01:15:22,641 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 176 [2019-10-15 01:15:22,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:22,653 INFO L225 Difference]: With dead ends: 2067 [2019-10-15 01:15:22,653 INFO L226 Difference]: Without dead ends: 1655 [2019-10-15 01:15:22,656 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2019-10-15 01:15:22,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2019-10-15 01:15:22,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1654. [2019-10-15 01:15:22,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1654 states. [2019-10-15 01:15:22,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2364 transitions. [2019-10-15 01:15:22,746 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2364 transitions. Word has length 176 [2019-10-15 01:15:22,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:22,747 INFO L462 AbstractCegarLoop]: Abstraction has 1654 states and 2364 transitions. [2019-10-15 01:15:22,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:15:22,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2364 transitions. [2019-10-15 01:15:22,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-15 01:15:22,753 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:22,753 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:22,754 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:22,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:22,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1230241458, now seen corresponding path program 2 times [2019-10-15 01:15:22,755 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:22,755 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122911052] [2019-10-15 01:15:22,755 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:22,755 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:22,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:22,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122911052] [2019-10-15 01:15:22,942 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969994750] [2019-10-15 01:15:22,942 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 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 [2019-10-15 01:15:23,419 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:15:23,419 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:23,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 01:15:23,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:23,683 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:24,201 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:24,201 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-15 01:15:24,201 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426572772] [2019-10-15 01:15:24,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:15:24,203 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:24,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:15:24,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:15:24,204 INFO L87 Difference]: Start difference. First operand 1654 states and 2364 transitions. Second operand 14 states. [2019-10-15 01:15:26,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:26,289 INFO L93 Difference]: Finished difference Result 4914 states and 7135 transitions. [2019-10-15 01:15:26,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:15:26,289 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 176 [2019-10-15 01:15:26,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:26,318 INFO L225 Difference]: With dead ends: 4914 [2019-10-15 01:15:26,318 INFO L226 Difference]: Without dead ends: 4907 [2019-10-15 01:15:26,322 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 346 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:15:26,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2019-10-15 01:15:26,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 4022. [2019-10-15 01:15:26,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4022 states. [2019-10-15 01:15:26,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4022 states to 4022 states and 6008 transitions. [2019-10-15 01:15:26,550 INFO L78 Accepts]: Start accepts. Automaton has 4022 states and 6008 transitions. Word has length 176 [2019-10-15 01:15:26,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:26,551 INFO L462 AbstractCegarLoop]: Abstraction has 4022 states and 6008 transitions. [2019-10-15 01:15:26,551 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:15:26,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4022 states and 6008 transitions. [2019-10-15 01:15:26,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-15 01:15:26,570 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:26,571 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2019-10-15 01:15:26,782 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:26,782 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:26,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:26,783 INFO L82 PathProgramCache]: Analyzing trace with hash -211310254, now seen corresponding path program 1 times [2019-10-15 01:15:26,783 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:26,783 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659875082] [2019-10-15 01:15:26,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:26,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:26,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:26,983 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-15 01:15:26,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659875082] [2019-10-15 01:15:26,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765863767] [2019-10-15 01:15:26,984 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 [2019-10-15 01:15:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:27,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 2479 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:27,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:15:28,050 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:28,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:28,469 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:28,545 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:28,658 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 01:15:28,658 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:28,658 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 9] total 24 [2019-10-15 01:15:28,659 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532873217] [2019-10-15 01:15:28,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:15:28,660 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:28,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:15:28,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2019-10-15 01:15:28,662 INFO L87 Difference]: Start difference. First operand 4022 states and 6008 transitions. Second operand 9 states. [2019-10-15 01:15:30,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:30,416 INFO L93 Difference]: Finished difference Result 8018 states and 11990 transitions. [2019-10-15 01:15:30,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:15:30,417 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 178 [2019-10-15 01:15:30,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:30,448 INFO L225 Difference]: With dead ends: 8018 [2019-10-15 01:15:30,448 INFO L226 Difference]: Without dead ends: 4040 [2019-10-15 01:15:30,464 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 340 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2019-10-15 01:15:30,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2019-10-15 01:15:30,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 4040. [2019-10-15 01:15:30,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4040 states. [2019-10-15 01:15:30,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 6029 transitions. [2019-10-15 01:15:30,685 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 6029 transitions. Word has length 178 [2019-10-15 01:15:30,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:30,685 INFO L462 AbstractCegarLoop]: Abstraction has 4040 states and 6029 transitions. [2019-10-15 01:15:30,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:15:30,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 6029 transitions. [2019-10-15 01:15:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 01:15:30,707 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:30,708 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2019-10-15 01:15:30,924 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:30,925 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:30,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:30,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1554347738, now seen corresponding path program 1 times [2019-10-15 01:15:30,926 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:30,926 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188882921] [2019-10-15 01:15:30,926 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:30,926 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:30,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-15 01:15:31,146 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188882921] [2019-10-15 01:15:31,147 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406690800] [2019-10-15 01:15:31,147 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 [2019-10-15 01:15:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:31,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 2480 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:31,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:31,827 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:15:31,827 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:32,172 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:32,221 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:32,273 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:32,273 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 7] total 20 [2019-10-15 01:15:32,273 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533299488] [2019-10-15 01:15:32,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:32,274 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:32,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:32,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:15:32,275 INFO L87 Difference]: Start difference. First operand 4040 states and 6029 transitions. Second operand 7 states. [2019-10-15 01:15:33,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:33,461 INFO L93 Difference]: Finished difference Result 7988 states and 11955 transitions. [2019-10-15 01:15:33,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:15:33,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2019-10-15 01:15:33,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:33,486 INFO L225 Difference]: With dead ends: 7988 [2019-10-15 01:15:33,487 INFO L226 Difference]: Without dead ends: 4040 [2019-10-15 01:15:33,503 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 347 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2019-10-15 01:15:33,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2019-10-15 01:15:33,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 4040. [2019-10-15 01:15:33,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4040 states. [2019-10-15 01:15:33,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 6007 transitions. [2019-10-15 01:15:33,694 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 6007 transitions. Word has length 179 [2019-10-15 01:15:33,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:33,694 INFO L462 AbstractCegarLoop]: Abstraction has 4040 states and 6007 transitions. [2019-10-15 01:15:33,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:33,694 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 6007 transitions. [2019-10-15 01:15:33,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-15 01:15:33,712 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:33,712 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:33,927 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:33,928 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:33,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:33,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1383490202, now seen corresponding path program 1 times [2019-10-15 01:15:33,929 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:33,930 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043331636] [2019-10-15 01:15:33,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:33,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:33,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:34,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043331636] [2019-10-15 01:15:34,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351117677] [2019-10-15 01:15:34,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-15 01:15:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:34,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:34,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:34,824 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:35,102 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:35,146 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:35,184 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:35,185 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:15:35,185 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538088883] [2019-10-15 01:15:35,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:35,186 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:35,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:35,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:15:35,186 INFO L87 Difference]: Start difference. First operand 4040 states and 6007 transitions. Second operand 7 states. [2019-10-15 01:15:36,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:36,347 INFO L93 Difference]: Finished difference Result 7289 states and 10708 transitions. [2019-10-15 01:15:36,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:15:36,348 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2019-10-15 01:15:36,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:36,371 INFO L225 Difference]: With dead ends: 7289 [2019-10-15 01:15:36,371 INFO L226 Difference]: Without dead ends: 4052 [2019-10-15 01:15:36,383 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 349 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:15:36,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2019-10-15 01:15:36,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 4040. [2019-10-15 01:15:36,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4040 states. [2019-10-15 01:15:36,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 6005 transitions. [2019-10-15 01:15:36,558 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 6005 transitions. Word has length 180 [2019-10-15 01:15:36,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:36,558 INFO L462 AbstractCegarLoop]: Abstraction has 4040 states and 6005 transitions. [2019-10-15 01:15:36,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:36,558 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 6005 transitions. [2019-10-15 01:15:36,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-15 01:15:36,580 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:36,580 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-15 01:15:36,787 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:36,787 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:36,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:36,788 INFO L82 PathProgramCache]: Analyzing trace with hash -585713515, now seen corresponding path program 1 times [2019-10-15 01:15:36,788 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:36,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101724873] [2019-10-15 01:15:36,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:36,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:36,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:36,896 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:36,897 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101724873] [2019-10-15 01:15:36,897 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647227675] [2019-10-15 01:15:36,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:37,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:37,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:37,649 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:38,058 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:38,151 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:38,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:38,318 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:38,318 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-15 01:15:38,318 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527435143] [2019-10-15 01:15:38,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:15:38,320 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:38,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:15:38,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:15:38,321 INFO L87 Difference]: Start difference. First operand 4040 states and 6005 transitions. Second operand 16 states. [2019-10-15 01:15:39,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:39,658 INFO L93 Difference]: Finished difference Result 8016 states and 11937 transitions. [2019-10-15 01:15:39,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:39,659 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 181 [2019-10-15 01:15:39,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:39,699 INFO L225 Difference]: With dead ends: 8016 [2019-10-15 01:15:39,699 INFO L226 Difference]: Without dead ends: 4062 [2019-10-15 01:15:39,712 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 346 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:15:39,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2019-10-15 01:15:39,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 4060. [2019-10-15 01:15:39,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4060 states. [2019-10-15 01:15:39,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4060 states to 4060 states and 6027 transitions. [2019-10-15 01:15:39,975 INFO L78 Accepts]: Start accepts. Automaton has 4060 states and 6027 transitions. Word has length 181 [2019-10-15 01:15:39,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:39,976 INFO L462 AbstractCegarLoop]: Abstraction has 4060 states and 6027 transitions. [2019-10-15 01:15:39,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:15:39,976 INFO L276 IsEmpty]: Start isEmpty. Operand 4060 states and 6027 transitions. [2019-10-15 01:15:39,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-15 01:15:39,992 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:39,992 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-15 01:15:40,193 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:40,194 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:40,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:40,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1598550041, now seen corresponding path program 2 times [2019-10-15 01:15:40,195 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:40,195 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759485100] [2019-10-15 01:15:40,195 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:40,196 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:40,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:15:40,312 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759485100] [2019-10-15 01:15:40,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67823854] [2019-10-15 01:15:40,313 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:40,886 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:15:40,886 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:40,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 2369 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:40,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:40,991 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:40,992 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:41,226 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:41,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:15:41,332 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:41,332 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-10-15 01:15:41,333 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128426420] [2019-10-15 01:15:41,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:15:41,334 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:41,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:15:41,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:15:41,334 INFO L87 Difference]: Start difference. First operand 4060 states and 6027 transitions. Second operand 11 states.