java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:14:14,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:14:14,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:14:14,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:14:14,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:14:14,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:14:14,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:14:14,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:14:14,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:14:14,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:14:14,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:14:14,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:14:14,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:14:14,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:14:14,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:14:14,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:14:14,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:14:14,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:14:14,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:14:14,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:14:14,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:14:14,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:14:14,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:14:14,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:14:14,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:14:14,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:14:14,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:14:14,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:14:14,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:14:14,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:14:14,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:14:14,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:14:14,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:14:14,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:14:14,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:14:14,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:14:14,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:14:14,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:14:14,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:14:14,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:14:14,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:14:14,169 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 01:14:14,189 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:14:14,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:14:14,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:14:14,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:14:14,193 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:14:14,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:14:14,193 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:14:14,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:14:14,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:14:14,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:14:14,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:14:14,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:14:14,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:14:14,196 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:14:14,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:14:14,196 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:14:14,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:14:14,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:14:14,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:14:14,197 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:14:14,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:14:14,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:14,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:14:14,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:14:14,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:14:14,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:14:14,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:14:14,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:14:14,199 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 01:14:14,489 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:14:14,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:14:14,506 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:14:14,508 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:14:14,508 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:14:14,509 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product30.cil.c [2019-10-15 01:14:14,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ecb21b38/072d2cd309224003a5ad16de5c72ef9b/FLAGbb62b583a [2019-10-15 01:14:15,193 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:14:15,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product30.cil.c [2019-10-15 01:14:15,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ecb21b38/072d2cd309224003a5ad16de5c72ef9b/FLAGbb62b583a [2019-10-15 01:14:15,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ecb21b38/072d2cd309224003a5ad16de5c72ef9b [2019-10-15 01:14:15,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:14:15,441 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:14:15,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:15,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:14:15,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:14:15,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:15" (1/1) ... [2019-10-15 01:14:15,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c6f9b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:15, skipping insertion in model container [2019-10-15 01:14:15,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:15" (1/1) ... [2019-10-15 01:14:15,458 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:14:15,546 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:14:16,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:16,339 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:14:16,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:16,583 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:14:16,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:16 WrapperNode [2019-10-15 01:14:16,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:16,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:14:16,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:14:16,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:14:16,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:16" (1/1) ... [2019-10-15 01:14:16,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:16" (1/1) ... [2019-10-15 01:14:16,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:16" (1/1) ... [2019-10-15 01:14:16,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:16" (1/1) ... [2019-10-15 01:14:16,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:16" (1/1) ... [2019-10-15 01:14:16,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:16" (1/1) ... [2019-10-15 01:14:16,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:16" (1/1) ... [2019-10-15 01:14:16,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:14:16,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:14:16,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:14:16,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:14:16,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:16" (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 01:14:16,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:14:16,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:14:16,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:16,881 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:14:16,881 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:14:16,881 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:14:16,882 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:14:16,882 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:14:16,882 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:14:16,882 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:14:16,883 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:14:16,883 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:14:16,883 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:14:16,883 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:14:16,883 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:14:16,884 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:14:16,884 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:14:16,884 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:14:16,884 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:14:16,885 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:14:16,885 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:14:16,886 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:14:16,886 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:14:16,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:14:16,886 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:14:16,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:14:16,887 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:14:16,887 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:14:16,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:14:16,887 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:14:16,889 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:14:16,889 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:14:16,889 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:14:16,889 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:14:16,889 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:14:16,890 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:14:16,890 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:14:16,890 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:14:16,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:14:16,891 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:14:16,891 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:14:16,891 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:14:16,891 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:14:16,891 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:14:16,892 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:14:16,892 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:14:16,892 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:14:16,892 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:14:16,892 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:14:16,892 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:14:16,893 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:14:16,893 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:14:16,893 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:14:16,893 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:14:16,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:14:16,893 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:14:16,893 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:14:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:14:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:14:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:14:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:14:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:14:16,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:14:16,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:14:16,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:14:16,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:14:16,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:14:16,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:14:16,896 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:14:16,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:14:16,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:14:16,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:14:16,896 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:14:16,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:14:16,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:14:16,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:14:16,898 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:14:16,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:14:16,898 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:14:16,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:14:16,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:14:16,899 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:14:16,899 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-15 01:14:16,900 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:14:16,900 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:14:16,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:14:16,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:14:16,902 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:14:16,902 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:14:16,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:16,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:16,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:16,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:14:16,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:14:16,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:14:16,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:14:16,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:14:16,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:16,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:14:16,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:16,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:14:16,904 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:14:16,904 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:14:16,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:14:16,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:14:16,904 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:14:16,904 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:14:16,905 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:14:16,905 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:14:16,905 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:14:16,905 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:14:16,905 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:14:16,905 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:14:16,906 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:14:16,906 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:14:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:14:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:14:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:14:16,907 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:14:16,907 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:14:16,907 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:14:16,907 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:14:16,908 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:14:16,908 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:14:16,909 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:14:16,909 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:14:16,909 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:14:16,910 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:14:16,910 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:14:16,910 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:14:16,910 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:14:16,910 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:14:16,911 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:14:16,911 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:14:16,911 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:14:16,911 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:14:16,912 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:14:16,915 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:14:16,915 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:14:16,916 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:14:16,916 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:14:16,916 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:14:16,917 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:14:16,917 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:14:16,924 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:14:16,924 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:14:16,924 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:14:16,924 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:14:16,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:14:16,925 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:14:16,925 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:14:16,925 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:14:16,925 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:14:16,925 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:14:16,925 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:14:16,925 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:14:16,925 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:14:16,926 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:14:16,926 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:14:16,926 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:14:16,926 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:14:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:14:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:14:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:14:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:14:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:14:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:14:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:14:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:14:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:14:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:14:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:14:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:14:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:14:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:14:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:14:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:14:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:14:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:14:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:14:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:14:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:14:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:14:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:14:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:14:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:14:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:14:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:14:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:14:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:14:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:14:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:14:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:14:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:14:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:14:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:14:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:14:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:14:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:14:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:14:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:14:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:14:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:14:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:14:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:14:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:14:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:14:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:14:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:14:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:14:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:14:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:14:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-15 01:14:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:14:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:14:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:14:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:14:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:14:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:14:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:14:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:14:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:14:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:14:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:14:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:14:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:14:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:14:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:14:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:14:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:14:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:14:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:14:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:14:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:14:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:14:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:14:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:14:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:14:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:14:18,957 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:14:18,958 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:14:18,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:18 BoogieIcfgContainer [2019-10-15 01:14:18,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:14:18,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:14:18,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:14:18,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:14:18,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:14:15" (1/3) ... [2019-10-15 01:14:18,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3714e723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:18, skipping insertion in model container [2019-10-15 01:14:18,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:16" (2/3) ... [2019-10-15 01:14:18,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3714e723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:18, skipping insertion in model container [2019-10-15 01:14:18,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:18" (3/3) ... [2019-10-15 01:14:18,968 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product30.cil.c [2019-10-15 01:14:18,979 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:14:18,989 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:14:19,001 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:14:19,033 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:14:19,033 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:14:19,033 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:14:19,034 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:14:19,034 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:14:19,034 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:14:19,034 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:14:19,034 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:14:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states. [2019-10-15 01:14:19,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-10-15 01:14:19,092 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:19,093 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:19,095 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:19,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:19,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1742226729, now seen corresponding path program 1 times [2019-10-15 01:14:19,113 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:19,113 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340553239] [2019-10-15 01:14:19,113 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:19,114 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:19,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:19,754 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:19,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340553239] [2019-10-15 01:14:19,756 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:19,757 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:14:19,757 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605289634] [2019-10-15 01:14:19,764 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:14:19,766 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:19,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:14:19,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:14:19,784 INFO L87 Difference]: Start difference. First operand 546 states. Second operand 2 states. [2019-10-15 01:14:19,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:19,856 INFO L93 Difference]: Finished difference Result 788 states and 1045 transitions. [2019-10-15 01:14:19,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:14:19,857 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 211 [2019-10-15 01:14:19,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:19,892 INFO L225 Difference]: With dead ends: 788 [2019-10-15 01:14:19,892 INFO L226 Difference]: Without dead ends: 500 [2019-10-15 01:14:19,905 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 01:14:19,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-10-15 01:14:20,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2019-10-15 01:14:20,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2019-10-15 01:14:20,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 664 transitions. [2019-10-15 01:14:20,049 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 664 transitions. Word has length 211 [2019-10-15 01:14:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:20,052 INFO L462 AbstractCegarLoop]: Abstraction has 500 states and 664 transitions. [2019-10-15 01:14:20,052 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:14:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 664 transitions. [2019-10-15 01:14:20,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-15 01:14:20,058 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:20,058 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:20,058 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:20,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:20,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1814113968, now seen corresponding path program 1 times [2019-10-15 01:14:20,059 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:20,059 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925230416] [2019-10-15 01:14:20,059 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:20,060 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:20,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:20,404 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925230416] [2019-10-15 01:14:20,405 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:20,405 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:20,405 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977905707] [2019-10-15 01:14:20,416 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:20,417 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:20,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:20,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:20,417 INFO L87 Difference]: Start difference. First operand 500 states and 664 transitions. Second operand 3 states. [2019-10-15 01:14:20,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:20,508 INFO L93 Difference]: Finished difference Result 771 states and 1008 transitions. [2019-10-15 01:14:20,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:20,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 212 [2019-10-15 01:14:20,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:20,519 INFO L225 Difference]: With dead ends: 771 [2019-10-15 01:14:20,519 INFO L226 Difference]: Without dead ends: 503 [2019-10-15 01:14:20,521 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 01:14:20,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2019-10-15 01:14:20,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 502. [2019-10-15 01:14:20,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2019-10-15 01:14:20,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 666 transitions. [2019-10-15 01:14:20,563 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 666 transitions. Word has length 212 [2019-10-15 01:14:20,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:20,566 INFO L462 AbstractCegarLoop]: Abstraction has 502 states and 666 transitions. [2019-10-15 01:14:20,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:20,566 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 666 transitions. [2019-10-15 01:14:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-10-15 01:14:20,573 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:20,574 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:20,574 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:20,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:20,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1188714336, now seen corresponding path program 1 times [2019-10-15 01:14:20,575 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:20,575 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074943507] [2019-10-15 01:14:20,575 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:20,575 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:20,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:20,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074943507] [2019-10-15 01:14:20,767 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:20,768 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:20,768 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508749964] [2019-10-15 01:14:20,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:20,772 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:20,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:20,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:20,772 INFO L87 Difference]: Start difference. First operand 502 states and 666 transitions. Second operand 3 states. [2019-10-15 01:14:20,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:20,814 INFO L93 Difference]: Finished difference Result 980 states and 1330 transitions. [2019-10-15 01:14:20,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:20,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2019-10-15 01:14:20,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:20,822 INFO L225 Difference]: With dead ends: 980 [2019-10-15 01:14:20,822 INFO L226 Difference]: Without dead ends: 543 [2019-10-15 01:14:20,825 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 01:14:20,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2019-10-15 01:14:20,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 542. [2019-10-15 01:14:20,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2019-10-15 01:14:20,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 735 transitions. [2019-10-15 01:14:20,866 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 735 transitions. Word has length 222 [2019-10-15 01:14:20,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:20,868 INFO L462 AbstractCegarLoop]: Abstraction has 542 states and 735 transitions. [2019-10-15 01:14:20,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 735 transitions. [2019-10-15 01:14:20,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2019-10-15 01:14:20,882 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:20,882 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:20,883 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:20,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:20,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1821969317, now seen corresponding path program 1 times [2019-10-15 01:14:20,883 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:20,884 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204459380] [2019-10-15 01:14:20,884 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:20,884 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:20,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:21,271 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204459380] [2019-10-15 01:14:21,271 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:21,272 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:21,272 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166846396] [2019-10-15 01:14:21,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:21,273 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:21,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:21,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:21,273 INFO L87 Difference]: Start difference. First operand 542 states and 735 transitions. Second operand 3 states. [2019-10-15 01:14:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:21,317 INFO L93 Difference]: Finished difference Result 1097 states and 1532 transitions. [2019-10-15 01:14:21,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:21,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2019-10-15 01:14:21,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:21,324 INFO L225 Difference]: With dead ends: 1097 [2019-10-15 01:14:21,324 INFO L226 Difference]: Without dead ends: 620 [2019-10-15 01:14:21,326 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 01:14:21,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-15 01:14:21,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 619. [2019-10-15 01:14:21,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-15 01:14:21,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 867 transitions. [2019-10-15 01:14:21,358 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 867 transitions. Word has length 223 [2019-10-15 01:14:21,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:21,359 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 867 transitions. [2019-10-15 01:14:21,359 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:21,359 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 867 transitions. [2019-10-15 01:14:21,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-10-15 01:14:21,364 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:21,365 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:21,365 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:21,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:21,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1508989344, now seen corresponding path program 1 times [2019-10-15 01:14:21,366 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:21,366 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258137587] [2019-10-15 01:14:21,367 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:21,367 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:21,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:21,555 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258137587] [2019-10-15 01:14:21,556 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:21,556 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:21,556 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566596567] [2019-10-15 01:14:21,557 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:21,557 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:21,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:21,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:21,558 INFO L87 Difference]: Start difference. First operand 619 states and 867 transitions. Second operand 3 states. [2019-10-15 01:14:21,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:21,643 INFO L93 Difference]: Finished difference Result 1322 states and 1918 transitions. [2019-10-15 01:14:21,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:21,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2019-10-15 01:14:21,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:21,649 INFO L225 Difference]: With dead ends: 1322 [2019-10-15 01:14:21,649 INFO L226 Difference]: Without dead ends: 768 [2019-10-15 01:14:21,652 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 01:14:21,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2019-10-15 01:14:21,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 767. [2019-10-15 01:14:21,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2019-10-15 01:14:21,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1119 transitions. [2019-10-15 01:14:21,682 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1119 transitions. Word has length 224 [2019-10-15 01:14:21,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:21,683 INFO L462 AbstractCegarLoop]: Abstraction has 767 states and 1119 transitions. [2019-10-15 01:14:21,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:21,683 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1119 transitions. [2019-10-15 01:14:21,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-10-15 01:14:21,688 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:21,689 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:21,689 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:21,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:21,690 INFO L82 PathProgramCache]: Analyzing trace with hash -2014555995, now seen corresponding path program 1 times [2019-10-15 01:14:21,690 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:21,690 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735958320] [2019-10-15 01:14:21,690 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:21,690 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:21,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:21,841 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735958320] [2019-10-15 01:14:21,841 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:21,841 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:21,842 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769541034] [2019-10-15 01:14:21,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:21,843 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:21,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:21,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:21,843 INFO L87 Difference]: Start difference. First operand 767 states and 1119 transitions. Second operand 3 states. [2019-10-15 01:14:21,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:21,889 INFO L93 Difference]: Finished difference Result 1754 states and 2654 transitions. [2019-10-15 01:14:21,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:21,890 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2019-10-15 01:14:21,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:21,897 INFO L225 Difference]: With dead ends: 1754 [2019-10-15 01:14:21,898 INFO L226 Difference]: Without dead ends: 1052 [2019-10-15 01:14:21,901 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 01:14:21,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2019-10-15 01:14:21,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1051. [2019-10-15 01:14:21,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2019-10-15 01:14:21,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1599 transitions. [2019-10-15 01:14:21,949 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1599 transitions. Word has length 225 [2019-10-15 01:14:21,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:21,950 INFO L462 AbstractCegarLoop]: Abstraction has 1051 states and 1599 transitions. [2019-10-15 01:14:21,950 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:21,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1599 transitions. [2019-10-15 01:14:21,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-10-15 01:14:21,957 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:21,957 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:21,958 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:21,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:21,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1949808246, now seen corresponding path program 1 times [2019-10-15 01:14:21,958 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:21,959 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424186584] [2019-10-15 01:14:21,959 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:21,959 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:21,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:22,447 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424186584] [2019-10-15 01:14:22,447 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647150979] [2019-10-15 01:14:22,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:23,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 2941 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:23,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:23,483 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:14:23,483 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:23,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:24,009 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:24,097 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:24,281 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:24,282 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:24,282 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-15 01:14:24,282 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818990407] [2019-10-15 01:14:24,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:14:24,283 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:24,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:14:24,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:14:24,285 INFO L87 Difference]: Start difference. First operand 1051 states and 1599 transitions. Second operand 9 states. [2019-10-15 01:14:25,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:25,914 INFO L93 Difference]: Finished difference Result 2080 states and 3178 transitions. [2019-10-15 01:14:25,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:14:25,915 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 228 [2019-10-15 01:14:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:25,921 INFO L225 Difference]: With dead ends: 2080 [2019-10-15 01:14:25,921 INFO L226 Difference]: Without dead ends: 1065 [2019-10-15 01:14:25,925 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 445 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:14:25,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2019-10-15 01:14:25,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2019-10-15 01:14:25,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2019-10-15 01:14:25,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1617 transitions. [2019-10-15 01:14:25,977 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1617 transitions. Word has length 228 [2019-10-15 01:14:25,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:25,978 INFO L462 AbstractCegarLoop]: Abstraction has 1065 states and 1617 transitions. [2019-10-15 01:14:25,978 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:14:25,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1617 transitions. [2019-10-15 01:14:25,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-10-15 01:14:25,984 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:25,985 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:26,195 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:26,195 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:26,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:26,196 INFO L82 PathProgramCache]: Analyzing trace with hash -298171984, now seen corresponding path program 1 times [2019-10-15 01:14:26,197 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:26,197 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842727617] [2019-10-15 01:14:26,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:26,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:26,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:26,591 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:26,591 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842727617] [2019-10-15 01:14:26,591 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19483472] [2019-10-15 01:14:26,592 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 01:14:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:27,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:27,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:27,407 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:14:27,407 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:27,728 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:27,827 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:27,889 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:27,890 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-15 01:14:27,890 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547312569] [2019-10-15 01:14:27,891 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:27,891 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:27,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:27,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:27,892 INFO L87 Difference]: Start difference. First operand 1065 states and 1617 transitions. Second operand 7 states. [2019-10-15 01:14:28,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:28,899 INFO L93 Difference]: Finished difference Result 2081 states and 3188 transitions. [2019-10-15 01:14:28,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:14:28,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2019-10-15 01:14:28,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:28,908 INFO L225 Difference]: With dead ends: 2081 [2019-10-15 01:14:28,908 INFO L226 Difference]: Without dead ends: 1067 [2019-10-15 01:14:28,914 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 452 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-15 01:14:28,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2019-10-15 01:14:29,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1067. [2019-10-15 01:14:29,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1067 states. [2019-10-15 01:14:29,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1620 transitions. [2019-10-15 01:14:29,016 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1620 transitions. Word has length 229 [2019-10-15 01:14:29,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:29,017 INFO L462 AbstractCegarLoop]: Abstraction has 1067 states and 1620 transitions. [2019-10-15 01:14:29,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:29,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1620 transitions. [2019-10-15 01:14:29,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-10-15 01:14:29,023 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:29,024 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:29,238 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:29,239 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:29,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:29,240 INFO L82 PathProgramCache]: Analyzing trace with hash 541650636, now seen corresponding path program 1 times [2019-10-15 01:14:29,241 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:29,241 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062373773] [2019-10-15 01:14:29,241 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:29,242 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:29,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:29,673 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062373773] [2019-10-15 01:14:29,674 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963924123] [2019-10-15 01:14:29,674 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 01:14:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:30,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:30,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:30,427 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:30,427 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:30,809 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:30,890 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:30,972 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:31,121 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:31,121 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:31,121 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-15 01:14:31,122 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598436162] [2019-10-15 01:14:31,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:14:31,123 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:31,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:14:31,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:14:31,124 INFO L87 Difference]: Start difference. First operand 1067 states and 1620 transitions. Second operand 16 states. [2019-10-15 01:14:33,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:33,401 INFO L93 Difference]: Finished difference Result 2085 states and 3182 transitions. [2019-10-15 01:14:33,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:33,401 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 230 [2019-10-15 01:14:33,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:33,409 INFO L225 Difference]: With dead ends: 2085 [2019-10-15 01:14:33,410 INFO L226 Difference]: Without dead ends: 1079 [2019-10-15 01:14:33,414 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 449 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-15 01:14:33,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2019-10-15 01:14:33,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1077. [2019-10-15 01:14:33,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2019-10-15 01:14:33,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1631 transitions. [2019-10-15 01:14:33,460 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1631 transitions. Word has length 230 [2019-10-15 01:14:33,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:33,461 INFO L462 AbstractCegarLoop]: Abstraction has 1077 states and 1631 transitions. [2019-10-15 01:14:33,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:14:33,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1631 transitions. [2019-10-15 01:14:33,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-15 01:14:33,466 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:33,466 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:33,673 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:33,674 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:33,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:33,674 INFO L82 PathProgramCache]: Analyzing trace with hash 718252898, now seen corresponding path program 2 times [2019-10-15 01:14:33,674 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:33,675 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644191933] [2019-10-15 01:14:33,675 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:33,675 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:33,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:34,175 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:34,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644191933] [2019-10-15 01:14:34,178 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272763977] [2019-10-15 01:14:34,178 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:34,680 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:14:34,680 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:34,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 2297 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:14:34,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:14:34,886 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:35,369 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:35,369 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-15 01:14:35,370 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175335471] [2019-10-15 01:14:35,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:14:35,370 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:35,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:14:35,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:14:35,371 INFO L87 Difference]: Start difference. First operand 1077 states and 1631 transitions. Second operand 14 states. [2019-10-15 01:14:37,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:37,669 INFO L93 Difference]: Finished difference Result 3418 states and 5238 transitions. [2019-10-15 01:14:37,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:14:37,669 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 231 [2019-10-15 01:14:37,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:37,694 INFO L225 Difference]: With dead ends: 3418 [2019-10-15 01:14:37,694 INFO L226 Difference]: Without dead ends: 3163 [2019-10-15 01:14:37,697 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 460 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-15 01:14:37,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2019-10-15 01:14:37,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 2860. [2019-10-15 01:14:37,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2860 states. [2019-10-15 01:14:37,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 4509 transitions. [2019-10-15 01:14:37,873 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 4509 transitions. Word has length 231 [2019-10-15 01:14:37,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:37,876 INFO L462 AbstractCegarLoop]: Abstraction has 2860 states and 4509 transitions. [2019-10-15 01:14:37,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:14:37,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 4509 transitions. [2019-10-15 01:14:37,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-15 01:14:37,896 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:37,896 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:38,105 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:38,105 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:38,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:38,106 INFO L82 PathProgramCache]: Analyzing trace with hash -585457696, now seen corresponding path program 1 times [2019-10-15 01:14:38,106 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:38,106 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932304213] [2019-10-15 01:14:38,106 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:38,107 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:38,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:38,520 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:38,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932304213] [2019-10-15 01:14:38,521 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272454167] [2019-10-15 01:14:38,521 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 01:14:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:39,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 2945 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:39,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:39,393 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:39,393 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:39,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:40,032 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:40,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:40,304 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:40,304 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-15 01:14:40,304 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596983550] [2019-10-15 01:14:40,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:14:40,308 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:40,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:14:40,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:40,309 INFO L87 Difference]: Start difference. First operand 2860 states and 4509 transitions. Second operand 15 states. [2019-10-15 01:14:41,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:41,616 INFO L93 Difference]: Finished difference Result 5614 states and 8894 transitions. [2019-10-15 01:14:41,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:41,617 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 232 [2019-10-15 01:14:41,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:41,637 INFO L225 Difference]: With dead ends: 5614 [2019-10-15 01:14:41,638 INFO L226 Difference]: Without dead ends: 2866 [2019-10-15 01:14:41,649 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 453 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:14:41,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2019-10-15 01:14:41,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2860. [2019-10-15 01:14:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2860 states. [2019-10-15 01:14:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 4507 transitions. [2019-10-15 01:14:41,783 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 4507 transitions. Word has length 232 [2019-10-15 01:14:41,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:41,783 INFO L462 AbstractCegarLoop]: Abstraction has 2860 states and 4507 transitions. [2019-10-15 01:14:41,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:14:41,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 4507 transitions. [2019-10-15 01:14:41,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-15 01:14:41,800 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:41,801 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:42,010 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:42,011 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:42,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:42,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1112432763, now seen corresponding path program 1 times [2019-10-15 01:14:42,012 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:42,012 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634854518] [2019-10-15 01:14:42,012 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:42,012 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:42,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:42,284 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634854518] [2019-10-15 01:14:42,284 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155222155] [2019-10-15 01:14:42,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:43,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:43,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:43,241 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:43,241 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:43,491 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:43,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:43,628 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:14:43,628 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:43,628 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-15 01:14:43,629 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663961208] [2019-10-15 01:14:43,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:14:43,630 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:43,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:14:43,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:14:43,631 INFO L87 Difference]: Start difference. First operand 2860 states and 4507 transitions. Second operand 12 states. [2019-10-15 01:14:44,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:44,994 INFO L93 Difference]: Finished difference Result 4123 states and 6386 transitions. [2019-10-15 01:14:44,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:14:44,995 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 233 [2019-10-15 01:14:44,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:45,005 INFO L225 Difference]: With dead ends: 4123 [2019-10-15 01:14:45,005 INFO L226 Difference]: Without dead ends: 2127 [2019-10-15 01:14:45,012 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 460 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:45,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2019-10-15 01:14:45,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 2127. [2019-10-15 01:14:45,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2127 states. [2019-10-15 01:14:45,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 3266 transitions. [2019-10-15 01:14:45,101 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 3266 transitions. Word has length 233 [2019-10-15 01:14:45,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:45,101 INFO L462 AbstractCegarLoop]: Abstraction has 2127 states and 3266 transitions. [2019-10-15 01:14:45,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:14:45,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 3266 transitions. [2019-10-15 01:14:45,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-15 01:14:45,113 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:45,114 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:45,330 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:45,331 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:45,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:45,332 INFO L82 PathProgramCache]: Analyzing trace with hash -2121934613, now seen corresponding path program 2 times [2019-10-15 01:14:45,332 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:45,332 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997054941] [2019-10-15 01:14:45,333 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:45,333 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:45,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:45,601 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:14:45,601 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997054941] [2019-10-15 01:14:45,602 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502131689] [2019-10-15 01:14:45,602 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:46,262 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:14:46,262 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:46,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 2300 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:14:46,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:14:46,426 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:46,863 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:46,863 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15] total 27 [2019-10-15 01:14:46,864 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396031833] [2019-10-15 01:14:46,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:14:46,865 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:46,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:14:46,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2019-10-15 01:14:46,866 INFO L87 Difference]: Start difference. First operand 2127 states and 3266 transitions. Second operand 14 states.