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_spec0_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:12:59,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:12:59,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:12:59,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:12:59,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:12:59,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:12:59,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:12:59,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:12:59,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:12:59,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:12:59,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:12:59,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:12:59,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:12:59,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:12:59,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:12:59,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:12:59,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:12:59,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:12:59,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:12:59,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:12:59,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:12:59,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:12:59,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:12:59,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:12:59,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:12:59,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:12:59,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:12:59,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:12:59,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:12:59,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:12:59,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:12:59,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:12:59,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:12:59,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:12:59,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:12:59,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:12:59,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:12:59,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:12:59,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:12:59,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:12:59,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:12:59,110 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:12:59,124 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:12:59,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:12:59,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:12:59,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:12:59,126 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:12:59,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:12:59,127 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:12:59,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:12:59,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:12:59,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:12:59,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:12:59,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:12:59,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:12:59,128 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:12:59,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:12:59,129 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:12:59,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:12:59,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:12:59,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:12:59,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:12:59,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:12:59,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:12:59,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:12:59,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:12:59,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:12:59,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:12:59,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:12:59,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:12:59,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:12:59,448 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:12:59,462 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:12:59,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:12:59,467 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:12:59,468 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:12:59,468 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product33.cil.c [2019-10-13 21:12:59,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3ba47815/85b47ed666f34650a994165adbe2e901/FLAG2ad0c4572 [2019-10-13 21:13:00,130 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:13:00,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product33.cil.c [2019-10-13 21:13:00,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3ba47815/85b47ed666f34650a994165adbe2e901/FLAG2ad0c4572 [2019-10-13 21:13:00,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3ba47815/85b47ed666f34650a994165adbe2e901 [2019-10-13 21:13:00,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:13:00,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:13:00,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:13:00,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:13:00,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:13:00,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:13:00" (1/1) ... [2019-10-13 21:13:00,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ad58572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:00, skipping insertion in model container [2019-10-13 21:13:00,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:13:00" (1/1) ... [2019-10-13 21:13:00,416 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:13:00,507 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:13:01,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:13:01,360 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:13:01,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:13:01,591 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:13:01,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:01 WrapperNode [2019-10-13 21:13:01,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:13:01,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:13:01,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:13:01,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:13:01,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:01" (1/1) ... [2019-10-13 21:13:01,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:01" (1/1) ... [2019-10-13 21:13:01,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:01" (1/1) ... [2019-10-13 21:13:01,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:01" (1/1) ... [2019-10-13 21:13:01,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:01" (1/1) ... [2019-10-13 21:13:01,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:01" (1/1) ... [2019-10-13 21:13:01,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:01" (1/1) ... [2019-10-13 21:13:01,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:13:01,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:13:01,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:13:01,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:13:01,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:13:01,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:13:01,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:13:01,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:13:01,899 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:13:01,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:13:01,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:13:01,900 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:13:01,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:13:01,900 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:13:01,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:13:01,901 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:13:01,901 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:13:01,901 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:13:01,901 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:13:01,901 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:13:01,902 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:13:01,903 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:13:01,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:13:01,904 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:13:01,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:13:01,904 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:13:01,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:13:01,905 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:13:01,905 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:13:01,905 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:13:01,908 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:13:01,908 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:13:01,909 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:13:01,909 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:13:01,909 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:13:01,909 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:13:01,909 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:13:01,909 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:13:01,909 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-13 21:13:01,910 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:13:01,910 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:13:01,910 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:13:01,910 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:13:01,910 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:13:01,910 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:13:01,911 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:13:01,911 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:13:01,911 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:13:01,911 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:13:01,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:13:01,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptForward_spec__1 [2019-10-13 21:13:01,912 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:13:01,912 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:13:01,912 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:13:01,912 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:13:01,912 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:13:01,912 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:13:01,912 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:13:01,913 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:13:01,913 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:13:01,913 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:13:01,913 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:13:01,913 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:13:01,913 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:13:01,914 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:13:01,914 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:13:01,914 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:13:01,914 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:13:01,914 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:13:01,914 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:13:01,915 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:13:01,915 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:13:01,915 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:13:01,915 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:13:01,915 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:13:01,915 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:13:01,916 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:13:01,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:13:01,916 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:13:01,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:13:01,916 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:13:01,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:13:01,916 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:13:01,917 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:13:01,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:13:01,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:13:01,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:13:01,917 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:13:01,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:13:01,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:13:01,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:13:01,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:13:01,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:13:01,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:13:01,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:13:01,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:13:01,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:13:01,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:13:01,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:13:01,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:13:01,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:13:01,920 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:13:01,920 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:13:01,920 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:13:01,920 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:13:01,920 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:13:01,920 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:13:01,920 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:13:01,921 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:13:01,921 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:13:01,921 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:13:01,921 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:13:01,921 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:13:01,921 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:13:01,921 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:13:01,922 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:13:01,922 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:13:01,922 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:13:01,922 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:13:01,922 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:13:01,922 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:13:01,922 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:13:01,923 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:13:01,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:13:01,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:13:01,923 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:13:01,923 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:13:01,924 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:13:01,924 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:13:01,924 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:13:01,924 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:13:01,924 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:13:01,924 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:13:01,924 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:13:01,925 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:13:01,925 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:13:01,925 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:13:01,925 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:13:01,925 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:13:01,925 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:13:01,926 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:13:01,926 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:13:01,926 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:13:01,926 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:13:01,926 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:13:01,926 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:13:01,927 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:13:01,927 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:13:01,927 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:13:01,927 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:13:01,927 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:13:01,927 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:13:01,928 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:13:01,928 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:13:01,928 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:13:01,928 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:13:01,928 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:13:01,928 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:13:01,928 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:13:01,929 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:13:01,929 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:13:01,929 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:13:01,929 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:13:01,929 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:13:01,929 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:13:01,930 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:13:01,930 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:13:01,930 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:13:01,930 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:13:01,930 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:13:01,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:13:01,931 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-13 21:13:01,931 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:13:01,931 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:13:01,931 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:13:01,931 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:13:01,932 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:13:01,932 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:13:01,932 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:13:01,932 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:13:01,932 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptForward_spec__1 [2019-10-13 21:13:01,932 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:13:01,933 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:13:01,933 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:13:01,933 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:13:01,933 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:13:01,933 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:13:01,934 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:13:01,934 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:13:01,934 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:13:01,934 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:13:01,934 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:13:01,934 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:13:01,934 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:13:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:13:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:13:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:13:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:13:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:13:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:13:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:13:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:13:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:13:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:13:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:13:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:13:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:13:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:13:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:13:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:13:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:13:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:13:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:13:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:13:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:13:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:13:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:13:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:13:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:13:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:13:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:13:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:13:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:13:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:13:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:13:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:13:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:13:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:13:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:13:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:13:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:13:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:13:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:13:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:13:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:13:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:13:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:13:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:13:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:13:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:13:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:13:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:13:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:13:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:13:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:13:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:13:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:13:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:13:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:13:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:13:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:13:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:13:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:13:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:13:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:13:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:13:04,100 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:13:04,100 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:13:04,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:13:04 BoogieIcfgContainer [2019-10-13 21:13:04,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:13:04,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:13:04,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:13:04,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:13:04,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:13:00" (1/3) ... [2019-10-13 21:13:04,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c94857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:13:04, skipping insertion in model container [2019-10-13 21:13:04,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:01" (2/3) ... [2019-10-13 21:13:04,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c94857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:13:04, skipping insertion in model container [2019-10-13 21:13:04,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:13:04" (3/3) ... [2019-10-13 21:13:04,115 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec0_product33.cil.c [2019-10-13 21:13:04,127 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:13:04,142 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:13:04,156 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:13:04,205 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:13:04,205 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:13:04,205 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:13:04,205 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:13:04,205 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:13:04,211 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:13:04,212 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:13:04,212 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:13:04,245 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states. [2019-10-13 21:13:04,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-13 21:13:04,274 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:04,276 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, 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] [2019-10-13 21:13:04,278 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:04,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:04,287 INFO L82 PathProgramCache]: Analyzing trace with hash -225515264, now seen corresponding path program 1 times [2019-10-13 21:13:04,298 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:04,298 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545447014] [2019-10-13 21:13:04,299 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:04,299 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:04,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:05,053 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 21:13:05,054 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545447014] [2019-10-13 21:13:05,055 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:05,055 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:13:05,056 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916354550] [2019-10-13 21:13:05,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:13:05,065 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:05,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:13:05,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:13:05,084 INFO L87 Difference]: Start difference. First operand 587 states. Second operand 2 states. [2019-10-13 21:13:05,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:05,200 INFO L93 Difference]: Finished difference Result 905 states and 1190 transitions. [2019-10-13 21:13:05,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:13:05,201 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 232 [2019-10-13 21:13:05,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:05,226 INFO L225 Difference]: With dead ends: 905 [2019-10-13 21:13:05,227 INFO L226 Difference]: Without dead ends: 564 [2019-10-13 21:13:05,235 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:13:05,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-10-13 21:13:05,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2019-10-13 21:13:05,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2019-10-13 21:13:05,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 744 transitions. [2019-10-13 21:13:05,366 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 744 transitions. Word has length 232 [2019-10-13 21:13:05,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:05,369 INFO L462 AbstractCegarLoop]: Abstraction has 564 states and 744 transitions. [2019-10-13 21:13:05,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:13:05,369 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 744 transitions. [2019-10-13 21:13:05,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-13 21:13:05,376 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:05,377 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, 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] [2019-10-13 21:13:05,377 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:05,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:05,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1451432834, now seen corresponding path program 1 times [2019-10-13 21:13:05,378 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:05,378 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110770951] [2019-10-13 21:13:05,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:05,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:05,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 21:13:05,734 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110770951] [2019-10-13 21:13:05,734 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:05,734 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:05,734 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328475435] [2019-10-13 21:13:05,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:05,744 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:05,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:05,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:05,745 INFO L87 Difference]: Start difference. First operand 564 states and 744 transitions. Second operand 3 states. [2019-10-13 21:13:05,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:05,839 INFO L93 Difference]: Finished difference Result 888 states and 1154 transitions. [2019-10-13 21:13:05,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:05,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2019-10-13 21:13:05,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:05,853 INFO L225 Difference]: With dead ends: 888 [2019-10-13 21:13:05,853 INFO L226 Difference]: Without dead ends: 567 [2019-10-13 21:13:05,859 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:05,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-10-13 21:13:05,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 566. [2019-10-13 21:13:05,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2019-10-13 21:13:05,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 746 transitions. [2019-10-13 21:13:05,917 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 746 transitions. Word has length 233 [2019-10-13 21:13:05,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:05,918 INFO L462 AbstractCegarLoop]: Abstraction has 566 states and 746 transitions. [2019-10-13 21:13:05,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:05,919 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 746 transitions. [2019-10-13 21:13:05,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-13 21:13:05,928 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:05,928 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:05,929 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:05,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:05,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1811771772, now seen corresponding path program 1 times [2019-10-13 21:13:05,929 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:05,930 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039205090] [2019-10-13 21:13:05,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:05,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:05,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:06,202 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 21:13:06,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039205090] [2019-10-13 21:13:06,202 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:06,203 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:06,203 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545629528] [2019-10-13 21:13:06,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:06,207 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:06,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:06,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:06,208 INFO L87 Difference]: Start difference. First operand 566 states and 746 transitions. Second operand 3 states. [2019-10-13 21:13:06,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:06,260 INFO L93 Difference]: Finished difference Result 1110 states and 1493 transitions. [2019-10-13 21:13:06,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:06,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 245 [2019-10-13 21:13:06,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:06,268 INFO L225 Difference]: With dead ends: 1110 [2019-10-13 21:13:06,269 INFO L226 Difference]: Without dead ends: 609 [2019-10-13 21:13:06,271 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:06,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2019-10-13 21:13:06,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 608. [2019-10-13 21:13:06,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-10-13 21:13:06,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 818 transitions. [2019-10-13 21:13:06,317 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 818 transitions. Word has length 245 [2019-10-13 21:13:06,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:06,318 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 818 transitions. [2019-10-13 21:13:06,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:06,318 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 818 transitions. [2019-10-13 21:13:06,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-10-13 21:13:06,324 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:06,325 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:06,325 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:06,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:06,326 INFO L82 PathProgramCache]: Analyzing trace with hash 2089199776, now seen corresponding path program 1 times [2019-10-13 21:13:06,327 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:06,327 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146470877] [2019-10-13 21:13:06,327 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:06,327 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:06,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 21:13:06,707 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146470877] [2019-10-13 21:13:06,707 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:06,708 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:06,708 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717443175] [2019-10-13 21:13:06,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:06,709 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:06,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:06,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:06,710 INFO L87 Difference]: Start difference. First operand 608 states and 818 transitions. Second operand 3 states. [2019-10-13 21:13:06,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:06,761 INFO L93 Difference]: Finished difference Result 1233 states and 1704 transitions. [2019-10-13 21:13:06,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:06,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2019-10-13 21:13:06,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:06,768 INFO L225 Difference]: With dead ends: 1233 [2019-10-13 21:13:06,769 INFO L226 Difference]: Without dead ends: 690 [2019-10-13 21:13:06,772 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:06,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-10-13 21:13:06,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 689. [2019-10-13 21:13:06,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2019-10-13 21:13:06,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 956 transitions. [2019-10-13 21:13:06,806 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 956 transitions. Word has length 246 [2019-10-13 21:13:06,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:06,807 INFO L462 AbstractCegarLoop]: Abstraction has 689 states and 956 transitions. [2019-10-13 21:13:06,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:06,807 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 956 transitions. [2019-10-13 21:13:06,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2019-10-13 21:13:06,814 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:06,814 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, 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] [2019-10-13 21:13:06,814 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:06,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:06,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1330390200, now seen corresponding path program 1 times [2019-10-13 21:13:06,815 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:06,815 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686068562] [2019-10-13 21:13:06,815 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:06,816 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:06,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:07,488 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-13 21:13:07,489 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686068562] [2019-10-13 21:13:07,490 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:07,490 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-13 21:13:07,490 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262091372] [2019-10-13 21:13:07,491 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 21:13:07,491 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:07,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 21:13:07,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:13:07,493 INFO L87 Difference]: Start difference. First operand 689 states and 956 transitions. Second operand 19 states. [2019-10-13 21:13:12,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:12,926 INFO L93 Difference]: Finished difference Result 2335 states and 3224 transitions. [2019-10-13 21:13:12,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-13 21:13:12,926 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 249 [2019-10-13 21:13:12,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:12,948 INFO L225 Difference]: With dead ends: 2335 [2019-10-13 21:13:12,949 INFO L226 Difference]: Without dead ends: 2027 [2019-10-13 21:13:12,953 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-10-13 21:13:12,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2019-10-13 21:13:13,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1990. [2019-10-13 21:13:13,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1990 states. [2019-10-13 21:13:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2766 transitions. [2019-10-13 21:13:13,099 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2766 transitions. Word has length 249 [2019-10-13 21:13:13,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:13,101 INFO L462 AbstractCegarLoop]: Abstraction has 1990 states and 2766 transitions. [2019-10-13 21:13:13,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-13 21:13:13,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2766 transitions. [2019-10-13 21:13:13,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-13 21:13:13,110 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:13,110 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, 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] [2019-10-13 21:13:13,111 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:13,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:13,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1816922894, now seen corresponding path program 1 times [2019-10-13 21:13:13,111 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:13,112 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30136608] [2019-10-13 21:13:13,112 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:13,112 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:13,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-13 21:13:13,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30136608] [2019-10-13 21:13:13,433 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:13,433 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:13:13,433 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505090475] [2019-10-13 21:13:13,435 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:13:13,435 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:13,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:13:13,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:13:13,437 INFO L87 Difference]: Start difference. First operand 1990 states and 2766 transitions. Second operand 11 states. [2019-10-13 21:13:14,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:14,047 INFO L93 Difference]: Finished difference Result 3347 states and 4565 transitions. [2019-10-13 21:13:14,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:13:14,048 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 250 [2019-10-13 21:13:14,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:14,068 INFO L225 Difference]: With dead ends: 3347 [2019-10-13 21:13:14,069 INFO L226 Difference]: Without dead ends: 2048 [2019-10-13 21:13:14,076 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:13:14,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2019-10-13 21:13:14,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 2048. [2019-10-13 21:13:14,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2048 states. [2019-10-13 21:13:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 2859 transitions. [2019-10-13 21:13:14,220 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 2859 transitions. Word has length 250 [2019-10-13 21:13:14,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:14,220 INFO L462 AbstractCegarLoop]: Abstraction has 2048 states and 2859 transitions. [2019-10-13 21:13:14,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:13:14,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 2859 transitions. [2019-10-13 21:13:14,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-13 21:13:14,234 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:14,234 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, 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] [2019-10-13 21:13:14,235 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:14,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:14,235 INFO L82 PathProgramCache]: Analyzing trace with hash 254235924, now seen corresponding path program 1 times [2019-10-13 21:13:14,236 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:14,236 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359937261] [2019-10-13 21:13:14,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:14,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:14,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:14,642 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-13 21:13:14,642 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359937261] [2019-10-13 21:13:14,643 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:14,643 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-13 21:13:14,643 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156877720] [2019-10-13 21:13:14,644 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:13:14,645 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:14,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:13:14,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:13:14,645 INFO L87 Difference]: Start difference. First operand 2048 states and 2859 transitions. Second operand 15 states. [2019-10-13 21:13:19,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:19,410 INFO L93 Difference]: Finished difference Result 3460 states and 4756 transitions. [2019-10-13 21:13:19,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-10-13 21:13:19,410 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 250 [2019-10-13 21:13:19,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:19,426 INFO L225 Difference]: With dead ends: 3460 [2019-10-13 21:13:19,426 INFO L226 Difference]: Without dead ends: 2164 [2019-10-13 21:13:19,432 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-10-13 21:13:19,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2019-10-13 21:13:19,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 2122. [2019-10-13 21:13:19,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2122 states. [2019-10-13 21:13:19,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 2981 transitions. [2019-10-13 21:13:19,555 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 2981 transitions. Word has length 250 [2019-10-13 21:13:19,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:19,556 INFO L462 AbstractCegarLoop]: Abstraction has 2122 states and 2981 transitions. [2019-10-13 21:13:19,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:13:19,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 2981 transitions. [2019-10-13 21:13:19,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-13 21:13:19,567 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:19,567 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, 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] [2019-10-13 21:13:19,568 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:19,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:19,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1990629027, now seen corresponding path program 1 times [2019-10-13 21:13:19,569 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:19,569 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859509135] [2019-10-13 21:13:19,569 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:19,569 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:19,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-13 21:13:20,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859509135] [2019-10-13 21:13:20,066 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:20,066 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-13 21:13:20,067 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902088230] [2019-10-13 21:13:20,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:13:20,068 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:20,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:13:20,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:13:20,069 INFO L87 Difference]: Start difference. First operand 2122 states and 2981 transitions. Second operand 16 states. [2019-10-13 21:13:20,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:20,505 INFO L93 Difference]: Finished difference Result 3562 states and 4909 transitions. [2019-10-13 21:13:20,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:13:20,506 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 250 [2019-10-13 21:13:20,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:20,521 INFO L225 Difference]: With dead ends: 3562 [2019-10-13 21:13:20,521 INFO L226 Difference]: Without dead ends: 2137 [2019-10-13 21:13:20,529 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:13:20,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2019-10-13 21:13:20,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2109. [2019-10-13 21:13:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2109 states. [2019-10-13 21:13:20,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 2939 transitions. [2019-10-13 21:13:20,655 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 2939 transitions. Word has length 250 [2019-10-13 21:13:20,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:20,656 INFO L462 AbstractCegarLoop]: Abstraction has 2109 states and 2939 transitions. [2019-10-13 21:13:20,656 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:13:20,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 2939 transitions. [2019-10-13 21:13:20,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-13 21:13:20,672 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:20,672 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, 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] [2019-10-13 21:13:20,673 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:20,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:20,673 INFO L82 PathProgramCache]: Analyzing trace with hash 281898935, now seen corresponding path program 1 times [2019-10-13 21:13:20,673 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:20,674 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584682431] [2019-10-13 21:13:20,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:20,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:20,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-13 21:13:20,921 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584682431] [2019-10-13 21:13:20,922 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:20,922 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:13:20,923 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643658624] [2019-10-13 21:13:20,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:13:20,923 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:20,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:13:20,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:13:20,924 INFO L87 Difference]: Start difference. First operand 2109 states and 2939 transitions. Second operand 5 states. [2019-10-13 21:13:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:22,270 INFO L93 Difference]: Finished difference Result 5198 states and 7180 transitions. [2019-10-13 21:13:22,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:13:22,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2019-10-13 21:13:22,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:22,296 INFO L225 Difference]: With dead ends: 5198 [2019-10-13 21:13:22,296 INFO L226 Difference]: Without dead ends: 4515 [2019-10-13 21:13:22,300 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:13:22,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4515 states. [2019-10-13 21:13:22,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4515 to 4484. [2019-10-13 21:13:22,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4484 states. [2019-10-13 21:13:22,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 6217 transitions. [2019-10-13 21:13:22,541 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 6217 transitions. Word has length 250 [2019-10-13 21:13:22,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:22,542 INFO L462 AbstractCegarLoop]: Abstraction has 4484 states and 6217 transitions. [2019-10-13 21:13:22,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:13:22,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 6217 transitions. [2019-10-13 21:13:22,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-13 21:13:22,556 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:22,556 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, 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] [2019-10-13 21:13:22,556 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:22,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:22,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2117741782, now seen corresponding path program 1 times [2019-10-13 21:13:22,557 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:22,557 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375455779] [2019-10-13 21:13:22,558 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:22,558 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:22,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:22,799 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:22,799 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375455779] [2019-10-13 21:13:22,800 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533354645] [2019-10-13 21:13:22,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:13:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:23,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:13:23,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:13:23,800 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:13:23,801 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:13:24,277 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:13:24,418 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:13:24,487 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:13:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:24,639 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:13:24,639 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-13 21:13:24,639 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395169262] [2019-10-13 21:13:24,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:13:24,640 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:24,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:13:24,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:13:24,641 INFO L87 Difference]: Start difference. First operand 4484 states and 6217 transitions. Second operand 9 states. [2019-10-13 21:13:26,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:26,998 INFO L93 Difference]: Finished difference Result 8946 states and 12414 transitions. [2019-10-13 21:13:26,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:13:26,999 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 250 [2019-10-13 21:13:27,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:27,033 INFO L225 Difference]: With dead ends: 8946 [2019-10-13 21:13:27,033 INFO L226 Difference]: Without dead ends: 4498 [2019-10-13 21:13:27,052 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 493 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:13:27,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4498 states. [2019-10-13 21:13:27,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4498 to 4498. [2019-10-13 21:13:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4498 states. [2019-10-13 21:13:27,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 6235 transitions. [2019-10-13 21:13:27,374 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 6235 transitions. Word has length 250 [2019-10-13 21:13:27,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:27,377 INFO L462 AbstractCegarLoop]: Abstraction has 4498 states and 6235 transitions. [2019-10-13 21:13:27,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:13:27,377 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 6235 transitions. [2019-10-13 21:13:27,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2019-10-13 21:13:27,400 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:27,401 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, 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] [2019-10-13 21:13:27,612 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:13:27,612 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:27,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:27,613 INFO L82 PathProgramCache]: Analyzing trace with hash -835855440, now seen corresponding path program 1 times [2019-10-13 21:13:27,613 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:27,614 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075535290] [2019-10-13 21:13:27,614 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:27,614 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:27,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:28,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075535290] [2019-10-13 21:13:28,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127020080] [2019-10-13 21:13:28,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:13:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:28,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:13:28,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:13:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:13:29,017 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:13:29,371 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:13:29,419 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:13:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:29,488 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:13:29,488 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:13:29,489 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465838695] [2019-10-13 21:13:29,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:13:29,490 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:29,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:13:29,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:13:29,490 INFO L87 Difference]: Start difference. First operand 4498 states and 6235 transitions. Second operand 7 states. [2019-10-13 21:13:30,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:30,829 INFO L93 Difference]: Finished difference Result 8951 states and 12434 transitions. [2019-10-13 21:13:30,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:13:30,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2019-10-13 21:13:30,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:30,855 INFO L225 Difference]: With dead ends: 8951 [2019-10-13 21:13:30,856 INFO L226 Difference]: Without dead ends: 4504 [2019-10-13 21:13:30,871 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 500 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:13:30,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4504 states. [2019-10-13 21:13:31,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4504 to 4504. [2019-10-13 21:13:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4504 states. [2019-10-13 21:13:31,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4504 states to 4504 states and 6242 transitions. [2019-10-13 21:13:31,097 INFO L78 Accepts]: Start accepts. Automaton has 4504 states and 6242 transitions. Word has length 251 [2019-10-13 21:13:31,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:31,098 INFO L462 AbstractCegarLoop]: Abstraction has 4504 states and 6242 transitions. [2019-10-13 21:13:31,098 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:13:31,098 INFO L276 IsEmpty]: Start isEmpty. Operand 4504 states and 6242 transitions. [2019-10-13 21:13:31,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2019-10-13 21:13:31,112 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:31,113 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:31,323 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:13:31,324 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:31,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:31,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1389520233, now seen corresponding path program 1 times [2019-10-13 21:13:31,324 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:31,325 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082709538] [2019-10-13 21:13:31,325 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:31,325 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:31,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:31,561 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082709538] [2019-10-13 21:13:31,562 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450872659] [2019-10-13 21:13:31,562 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