/usr/bin/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_spec1_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:47:50,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:47:50,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:47:50,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:47:50,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:47:50,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:47:50,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:47:50,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:47:50,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:47:50,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:47:50,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:47:50,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:47:50,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:47:50,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:47:50,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:47:50,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:47:50,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:47:50,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:47:50,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:47:50,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:47:50,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:47:50,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:47:50,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:47:50,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:47:50,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:47:50,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:47:50,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:47:50,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:47:50,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:47:50,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:47:50,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:47:50,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:47:50,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:47:50,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:47:50,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:47:50,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:47:50,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:47:50,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:47:50,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:47:50,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:47:50,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:47:50,773 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 [2019-11-07 00:47:50,788 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:47:50,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:47:50,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:47:50,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:47:50,790 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:47:50,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:47:50,790 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:47:50,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:47:50,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:47:50,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:47:50,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:47:50,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:47:50,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:47:50,792 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:47:50,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:47:50,792 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:47:50,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:47:50,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:47:50,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:47:50,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:47:50,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:47:50,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:47:50,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:47:50,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:47:50,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:47:50,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:47:50,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:47:50,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:47:50,795 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 [2019-11-07 00:47:51,091 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:47:51,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:47:51,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:47:51,109 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:47:51,110 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:47:51,111 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product15.cil.c [2019-11-07 00:47:51,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b07d247b8/eec7747311254afba64d85a18940c8f4/FLAG9a04ed4a3 [2019-11-07 00:47:51,779 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:47:51,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product15.cil.c [2019-11-07 00:47:51,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b07d247b8/eec7747311254afba64d85a18940c8f4/FLAG9a04ed4a3 [2019-11-07 00:47:52,003 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b07d247b8/eec7747311254afba64d85a18940c8f4 [2019-11-07 00:47:52,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:47:52,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:47:52,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:47:52,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:47:52,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:47:52,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:47:52" (1/1) ... [2019-11-07 00:47:52,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b75b89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:52, skipping insertion in model container [2019-11-07 00:47:52,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:47:52" (1/1) ... [2019-11-07 00:47:52,031 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:47:52,101 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:47:52,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:47:52,846 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:47:52,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:47:53,065 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:47:53,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53 WrapperNode [2019-11-07 00:47:53,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:47:53,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:47:53,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:47:53,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:47:53,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53" (1/1) ... [2019-11-07 00:47:53,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53" (1/1) ... [2019-11-07 00:47:53,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53" (1/1) ... [2019-11-07 00:47:53,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53" (1/1) ... [2019-11-07 00:47:53,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53" (1/1) ... [2019-11-07 00:47:53,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53" (1/1) ... [2019-11-07 00:47:53,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53" (1/1) ... [2019-11-07 00:47:53,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:47:53,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:47:53,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:47:53,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:47:53,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53" (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 [2019-11-07 00:47:53,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:47:53,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:47:53,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:47:53,352 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:47:53,352 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:47:53,352 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:47:53,353 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:47:53,353 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:47:53,353 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:47:53,353 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:47:53,353 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:47:53,354 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:47:53,354 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:47:53,354 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:47:53,355 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:47:53,355 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:47:53,355 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:47:53,355 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:47:53,356 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:47:53,356 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:47:53,356 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:47:53,356 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:47:53,359 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:47:53,359 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:47:53,360 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:47:53,360 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:47:53,360 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:47:53,360 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:47:53,361 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:47:53,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:47:53,361 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:47:53,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:47:53,361 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:47:53,362 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:47:53,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:47:53,362 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:47:53,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:47:53,363 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:47:53,363 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:47:53,363 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:47:53,364 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:47:53,364 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:47:53,364 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:47:53,364 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:47:53,364 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:47:53,364 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:47:53,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:47:53,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:47:53,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:47:53,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:47:53,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:47:53,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:47:53,366 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:47:53,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:47:53,366 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:47:53,366 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:47:53,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:47:53,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:47:53,367 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:47:53,367 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:47:53,368 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:47:53,368 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:47:53,368 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:47:53,369 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:47:53,369 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:47:53,369 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:47:53,369 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:47:53,369 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:47:53,369 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:47:53,370 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:47:53,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:47:53,370 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:47:53,370 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:47:53,371 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:47:53,371 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:47:53,372 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:47:53,372 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:47:53,372 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:47:53,372 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:47:53,373 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:47:53,373 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:47:53,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:47:53,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:47:53,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:47:53,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:47:53,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:47:53,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:47:53,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__AddressBookEncrypt_spec__1 [2019-11-07 00:47:53,377 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:47:53,377 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:47:53,377 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:47:53,377 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:47:53,377 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:47:53,377 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-11-07 00:47:53,378 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:47:53,378 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:47:53,378 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:47:53,378 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:47:53,379 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:47:53,379 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:47:53,379 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:47:53,379 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:47:53,380 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:47:53,380 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:47:53,380 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:47:53,380 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:47:53,380 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:47:53,381 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:47:53,381 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:47:53,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:47:53,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:47:53,382 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:47:53,382 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:47:53,382 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:47:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:47:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:47:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:47:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:47:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:47:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:47:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:47:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:47:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:47:53,386 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:47:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:47:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:47:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:47:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:47:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:47:53,388 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:47:53,388 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:47:53,388 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:47:53,389 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:47:53,389 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:47:53,389 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:47:53,389 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:47:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:47:53,398 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:47:53,399 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:47:53,399 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:47:53,399 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:47:53,400 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:47:53,401 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:47:53,401 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:47:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:47:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:47:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:47:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:47:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:47:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:47:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:47:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:47:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:47:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:47:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:47:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:47:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:47:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:47:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:47:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:47:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:47:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:47:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:47:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:47:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:47:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:47:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:47:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:47:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:47:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:47:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:47:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:47:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:47:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:47:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:47:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:47:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:47:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:47:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:47:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:47:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:47:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:47:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:47:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:47:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:47:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:47:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:47:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:47:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:47:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:47:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:47:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:47:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:47:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:47:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:47:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:47:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:47:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:47:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:47:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:47:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:47:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:47:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:47:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:47:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:47:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:47:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:47:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:47:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:47:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:47:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:47:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:47:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:47:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:47:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:47:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:47:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:47:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__AddressBookEncrypt_spec__1 [2019-11-07 00:47:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:47:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:47:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:47:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:47:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:47:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:47:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:47:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:47:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:47:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-11-07 00:47:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:47:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:47:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:47:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:47:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:47:55,553 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:47:55,554 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:47:55,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:47:55 BoogieIcfgContainer [2019-11-07 00:47:55,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:47:55,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:47:55,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:47:55,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:47:55,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:47:52" (1/3) ... [2019-11-07 00:47:55,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f71239b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:47:55, skipping insertion in model container [2019-11-07 00:47:55,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53" (2/3) ... [2019-11-07 00:47:55,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f71239b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:47:55, skipping insertion in model container [2019-11-07 00:47:55,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:47:55" (3/3) ... [2019-11-07 00:47:55,565 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec1_product15.cil.c [2019-11-07 00:47:55,574 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:47:55,585 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:47:55,597 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:47:55,639 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:47:55,639 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:47:55,639 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:47:55,639 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:47:55,639 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:47:55,640 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:47:55,640 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:47:55,640 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:47:55,677 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states. [2019-11-07 00:47:55,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-07 00:47:55,704 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:55,705 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:55,707 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:55,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:55,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1912918606, now seen corresponding path program 1 times [2019-11-07 00:47:55,721 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:55,721 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674185251] [2019-11-07 00:47:55,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:56,281 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:47:56,281 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674185251] [2019-11-07 00:47:56,282 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:56,283 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:47:56,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406068021] [2019-11-07 00:47:56,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:47:56,296 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:56,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:47:56,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:47:56,314 INFO L87 Difference]: Start difference. First operand 466 states. Second operand 2 states. [2019-11-07 00:47:56,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:56,383 INFO L93 Difference]: Finished difference Result 626 states and 831 transitions. [2019-11-07 00:47:56,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:47:56,384 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 145 [2019-11-07 00:47:56,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:56,407 INFO L225 Difference]: With dead ends: 626 [2019-11-07 00:47:56,407 INFO L226 Difference]: Without dead ends: 419 [2019-11-07 00:47:56,413 INFO L630 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 [2019-11-07 00:47:56,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2019-11-07 00:47:56,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2019-11-07 00:47:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2019-11-07 00:47:56,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 560 transitions. [2019-11-07 00:47:56,545 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 560 transitions. Word has length 145 [2019-11-07 00:47:56,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:56,548 INFO L462 AbstractCegarLoop]: Abstraction has 419 states and 560 transitions. [2019-11-07 00:47:56,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:47:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 560 transitions. [2019-11-07 00:47:56,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-07 00:47:56,553 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:56,554 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:56,554 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:56,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:56,554 INFO L82 PathProgramCache]: Analyzing trace with hash 446933030, now seen corresponding path program 1 times [2019-11-07 00:47:56,555 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:56,555 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546150550] [2019-11-07 00:47:56,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:47:56,737 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546150550] [2019-11-07 00:47:56,737 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:56,737 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:56,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899218137] [2019-11-07 00:47:56,742 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:56,742 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:56,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:56,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:56,744 INFO L87 Difference]: Start difference. First operand 419 states and 560 transitions. Second operand 3 states. [2019-11-07 00:47:56,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:56,804 INFO L93 Difference]: Finished difference Result 609 states and 800 transitions. [2019-11-07 00:47:56,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:56,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2019-11-07 00:47:56,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:56,813 INFO L225 Difference]: With dead ends: 609 [2019-11-07 00:47:56,813 INFO L226 Difference]: Without dead ends: 422 [2019-11-07 00:47:56,817 INFO L630 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 [2019-11-07 00:47:56,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2019-11-07 00:47:56,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 421. [2019-11-07 00:47:56,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2019-11-07 00:47:56,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 562 transitions. [2019-11-07 00:47:56,874 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 562 transitions. Word has length 146 [2019-11-07 00:47:56,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:56,875 INFO L462 AbstractCegarLoop]: Abstraction has 421 states and 562 transitions. [2019-11-07 00:47:56,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:56,875 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 562 transitions. [2019-11-07 00:47:56,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-11-07 00:47:56,881 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:56,881 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:56,882 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:56,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:56,882 INFO L82 PathProgramCache]: Analyzing trace with hash -874845866, now seen corresponding path program 1 times [2019-11-07 00:47:56,882 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:56,883 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325711888] [2019-11-07 00:47:56,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:47:57,064 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325711888] [2019-11-07 00:47:57,064 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:57,064 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:57,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196944126] [2019-11-07 00:47:57,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:57,068 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:57,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:57,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:57,069 INFO L87 Difference]: Start difference. First operand 421 states and 562 transitions. Second operand 3 states. [2019-11-07 00:47:57,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:57,136 INFO L93 Difference]: Finished difference Result 818 states and 1122 transitions. [2019-11-07 00:47:57,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:57,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2019-11-07 00:47:57,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:57,146 INFO L225 Difference]: With dead ends: 818 [2019-11-07 00:47:57,146 INFO L226 Difference]: Without dead ends: 462 [2019-11-07 00:47:57,149 INFO L630 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 [2019-11-07 00:47:57,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2019-11-07 00:47:57,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 461. [2019-11-07 00:47:57,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2019-11-07 00:47:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 631 transitions. [2019-11-07 00:47:57,250 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 631 transitions. Word has length 156 [2019-11-07 00:47:57,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:57,251 INFO L462 AbstractCegarLoop]: Abstraction has 461 states and 631 transitions. [2019-11-07 00:47:57,251 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:57,252 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 631 transitions. [2019-11-07 00:47:57,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-11-07 00:47:57,259 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:57,260 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:57,260 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:57,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:57,261 INFO L82 PathProgramCache]: Analyzing trace with hash -724570560, now seen corresponding path program 1 times [2019-11-07 00:47:57,261 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:57,262 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694515206] [2019-11-07 00:47:57,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:57,558 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:47:57,558 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694515206] [2019-11-07 00:47:57,558 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:57,559 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:57,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636731535] [2019-11-07 00:47:57,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:57,561 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:57,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:57,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:57,562 INFO L87 Difference]: Start difference. First operand 461 states and 631 transitions. Second operand 3 states. [2019-11-07 00:47:57,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:57,603 INFO L93 Difference]: Finished difference Result 935 states and 1324 transitions. [2019-11-07 00:47:57,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:57,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2019-11-07 00:47:57,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:57,613 INFO L225 Difference]: With dead ends: 935 [2019-11-07 00:47:57,613 INFO L226 Difference]: Without dead ends: 539 [2019-11-07 00:47:57,615 INFO L630 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 [2019-11-07 00:47:57,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2019-11-07 00:47:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 538. [2019-11-07 00:47:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2019-11-07 00:47:57,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 763 transitions. [2019-11-07 00:47:57,647 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 763 transitions. Word has length 157 [2019-11-07 00:47:57,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:57,648 INFO L462 AbstractCegarLoop]: Abstraction has 538 states and 763 transitions. [2019-11-07 00:47:57,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:57,648 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 763 transitions. [2019-11-07 00:47:57,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-11-07 00:47:57,653 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:57,654 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:57,654 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:57,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:57,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1753586442, now seen corresponding path program 1 times [2019-11-07 00:47:57,655 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:57,656 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930037028] [2019-11-07 00:47:57,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:57,836 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:47:57,837 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930037028] [2019-11-07 00:47:57,837 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:57,837 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:57,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388407286] [2019-11-07 00:47:57,838 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:57,838 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:57,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:57,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:57,839 INFO L87 Difference]: Start difference. First operand 538 states and 763 transitions. Second operand 3 states. [2019-11-07 00:47:57,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:57,875 INFO L93 Difference]: Finished difference Result 1160 states and 1710 transitions. [2019-11-07 00:47:57,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:57,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-11-07 00:47:57,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:57,881 INFO L225 Difference]: With dead ends: 1160 [2019-11-07 00:47:57,882 INFO L226 Difference]: Without dead ends: 687 [2019-11-07 00:47:57,884 INFO L630 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 [2019-11-07 00:47:57,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2019-11-07 00:47:57,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 686. [2019-11-07 00:47:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2019-11-07 00:47:57,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1015 transitions. [2019-11-07 00:47:57,921 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1015 transitions. Word has length 158 [2019-11-07 00:47:57,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:57,921 INFO L462 AbstractCegarLoop]: Abstraction has 686 states and 1015 transitions. [2019-11-07 00:47:57,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:57,922 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1015 transitions. [2019-11-07 00:47:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-11-07 00:47:57,927 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:57,928 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:57,928 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:57,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:57,928 INFO L82 PathProgramCache]: Analyzing trace with hash -862283104, now seen corresponding path program 1 times [2019-11-07 00:47:57,929 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:57,929 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558586884] [2019-11-07 00:47:57,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:58,131 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:47:58,131 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558586884] [2019-11-07 00:47:58,132 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:58,132 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:58,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329015571] [2019-11-07 00:47:58,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:58,134 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:58,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:58,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:58,134 INFO L87 Difference]: Start difference. First operand 686 states and 1015 transitions. Second operand 3 states. [2019-11-07 00:47:58,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:58,188 INFO L93 Difference]: Finished difference Result 1592 states and 2446 transitions. [2019-11-07 00:47:58,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:58,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-11-07 00:47:58,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:58,197 INFO L225 Difference]: With dead ends: 1592 [2019-11-07 00:47:58,197 INFO L226 Difference]: Without dead ends: 971 [2019-11-07 00:47:58,200 INFO L630 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 [2019-11-07 00:47:58,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2019-11-07 00:47:58,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 970. [2019-11-07 00:47:58,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2019-11-07 00:47:58,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1495 transitions. [2019-11-07 00:47:58,250 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1495 transitions. Word has length 159 [2019-11-07 00:47:58,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:58,252 INFO L462 AbstractCegarLoop]: Abstraction has 970 states and 1495 transitions. [2019-11-07 00:47:58,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:58,252 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1495 transitions. [2019-11-07 00:47:58,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-07 00:47:58,257 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:58,258 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:58,258 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:58,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:58,258 INFO L82 PathProgramCache]: Analyzing trace with hash -152708534, now seen corresponding path program 1 times [2019-11-07 00:47:58,258 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:58,259 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329311403] [2019-11-07 00:47:58,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 00:47:59,423 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329311403] [2019-11-07 00:47:59,424 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:59,424 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2019-11-07 00:47:59,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962153906] [2019-11-07 00:47:59,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-07 00:47:59,425 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:59,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-07 00:47:59,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:47:59,427 INFO L87 Difference]: Start difference. First operand 970 states and 1495 transitions. Second operand 35 states. [2019-11-07 00:48:04,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:04,316 INFO L93 Difference]: Finished difference Result 2852 states and 4510 transitions. [2019-11-07 00:48:04,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-11-07 00:48:04,316 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 162 [2019-11-07 00:48:04,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:04,334 INFO L225 Difference]: With dead ends: 2852 [2019-11-07 00:48:04,334 INFO L226 Difference]: Without dead ends: 1914 [2019-11-07 00:48:04,342 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=298, Invalid=4124, Unknown=0, NotChecked=0, Total=4422 [2019-11-07 00:48:04,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2019-11-07 00:48:04,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1702. [2019-11-07 00:48:04,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1702 states. [2019-11-07 00:48:04,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2765 transitions. [2019-11-07 00:48:04,476 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2765 transitions. Word has length 162 [2019-11-07 00:48:04,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:04,477 INFO L462 AbstractCegarLoop]: Abstraction has 1702 states and 2765 transitions. [2019-11-07 00:48:04,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-11-07 00:48:04,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2765 transitions. [2019-11-07 00:48:04,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-11-07 00:48:04,486 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:04,486 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-11-07 00:48:04,487 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:04,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:04,487 INFO L82 PathProgramCache]: Analyzing trace with hash 2122713605, now seen corresponding path program 1 times [2019-11-07 00:48:04,487 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:04,488 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157956098] [2019-11-07 00:48:04,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:48:04,618 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157956098] [2019-11-07 00:48:04,619 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:04,619 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:48:04,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926440960] [2019-11-07 00:48:04,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:48:04,620 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:04,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:48:04,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:48:04,621 INFO L87 Difference]: Start difference. First operand 1702 states and 2765 transitions. Second operand 3 states. [2019-11-07 00:48:04,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:04,741 INFO L93 Difference]: Finished difference Result 4414 states and 7344 transitions. [2019-11-07 00:48:04,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:48:04,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-11-07 00:48:04,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:04,762 INFO L225 Difference]: With dead ends: 4414 [2019-11-07 00:48:04,763 INFO L226 Difference]: Without dead ends: 2791 [2019-11-07 00:48:04,770 INFO L630 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 [2019-11-07 00:48:04,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2019-11-07 00:48:04,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2790. [2019-11-07 00:48:04,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2790 states. [2019-11-07 00:48:04,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 4637 transitions. [2019-11-07 00:48:04,979 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 4637 transitions. Word has length 161 [2019-11-07 00:48:04,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:04,980 INFO L462 AbstractCegarLoop]: Abstraction has 2790 states and 4637 transitions. [2019-11-07 00:48:04,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:48:04,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 4637 transitions. [2019-11-07 00:48:04,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-11-07 00:48:04,992 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:04,992 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-11-07 00:48:04,992 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:04,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:04,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1617484209, now seen corresponding path program 1 times [2019-11-07 00:48:04,993 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:04,993 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421500854] [2019-11-07 00:48:04,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:05,751 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 00:48:05,751 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421500854] [2019-11-07 00:48:05,752 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456970014] [2019-11-07 00:48:05,752 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 [2019-11-07 00:48:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:06,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:48:06,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:48:06,547 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:48:06,547 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:48:06,891 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:48:06,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:48:07,059 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:48:07,059 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:48:07,060 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [31, 7] total 39 [2019-11-07 00:48:07,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614103810] [2019-11-07 00:48:07,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:48:07,061 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:07,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:48:07,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1372, Unknown=0, NotChecked=0, Total=1482 [2019-11-07 00:48:07,062 INFO L87 Difference]: Start difference. First operand 2790 states and 4637 transitions. Second operand 7 states. [2019-11-07 00:48:08,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:08,018 INFO L93 Difference]: Finished difference Result 5533 states and 9255 transitions. [2019-11-07 00:48:08,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:48:08,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2019-11-07 00:48:08,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:08,043 INFO L225 Difference]: With dead ends: 5533 [2019-11-07 00:48:08,043 INFO L226 Difference]: Without dead ends: 2794 [2019-11-07 00:48:08,063 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 320 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=128, Invalid=1512, Unknown=0, NotChecked=0, Total=1640 [2019-11-07 00:48:08,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2019-11-07 00:48:08,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2794. [2019-11-07 00:48:08,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2794 states. [2019-11-07 00:48:08,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2794 states to 2794 states and 4642 transitions. [2019-11-07 00:48:08,335 INFO L78 Accepts]: Start accepts. Automaton has 2794 states and 4642 transitions. Word has length 164 [2019-11-07 00:48:08,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:08,335 INFO L462 AbstractCegarLoop]: Abstraction has 2794 states and 4642 transitions. [2019-11-07 00:48:08,335 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:48:08,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2794 states and 4642 transitions. [2019-11-07 00:48:08,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-11-07 00:48:08,348 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:08,348 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:48:08,555 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:48:08,557 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:08,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:08,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1071886407, now seen corresponding path program 1 times [2019-11-07 00:48:08,558 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:08,558 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968506035] [2019-11-07 00:48:08,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:09,151 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:48:09,152 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968506035] [2019-11-07 00:48:09,152 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:09,152 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-11-07 00:48:09,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285490293] [2019-11-07 00:48:09,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-07 00:48:09,153 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:09,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-07 00:48:09,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2019-11-07 00:48:09,154 INFO L87 Difference]: Start difference. First operand 2794 states and 4642 transitions. Second operand 26 states. [2019-11-07 00:48:16,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:16,270 INFO L93 Difference]: Finished difference Result 6314 states and 10216 transitions. [2019-11-07 00:48:16,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-11-07 00:48:16,270 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 165 [2019-11-07 00:48:16,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:16,310 INFO L225 Difference]: With dead ends: 6314 [2019-11-07 00:48:16,310 INFO L226 Difference]: Without dead ends: 6136 [2019-11-07 00:48:16,316 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1518 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=724, Invalid=5596, Unknown=0, NotChecked=0, Total=6320 [2019-11-07 00:48:16,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2019-11-07 00:48:16,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 5721. [2019-11-07 00:48:16,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5721 states. [2019-11-07 00:48:16,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5721 states to 5721 states and 9472 transitions. [2019-11-07 00:48:16,640 INFO L78 Accepts]: Start accepts. Automaton has 5721 states and 9472 transitions. Word has length 165 [2019-11-07 00:48:16,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:16,641 INFO L462 AbstractCegarLoop]: Abstraction has 5721 states and 9472 transitions. [2019-11-07 00:48:16,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-07 00:48:16,641 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 9472 transitions. [2019-11-07 00:48:16,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-07 00:48:16,670 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:16,670 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:48:16,671 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:16,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:16,672 INFO L82 PathProgramCache]: Analyzing trace with hash -667680481, now seen corresponding path program 1 times [2019-11-07 00:48:16,672 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:16,672 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118057560] [2019-11-07 00:48:16,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:16,918 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:48:16,919 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118057560] [2019-11-07 00:48:16,919 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:16,919 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:48:16,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777369839] [2019-11-07 00:48:16,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:48:16,920 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:16,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:48:16,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:48:16,921 INFO L87 Difference]: Start difference. First operand 5721 states and 9472 transitions. Second operand 5 states. [2019-11-07 00:48:17,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:17,881 INFO L93 Difference]: Finished difference Result 9891 states and 16263 transitions. [2019-11-07 00:48:17,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:48:17,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2019-11-07 00:48:17,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:17,969 INFO L225 Difference]: With dead ends: 9891 [2019-11-07 00:48:17,970 INFO L226 Difference]: Without dead ends: 9360 [2019-11-07 00:48:17,978 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:48:17,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9360 states. [2019-11-07 00:48:18,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9360 to 8078. [2019-11-07 00:48:18,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8078 states. [2019-11-07 00:48:18,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8078 states to 8078 states and 13219 transitions. [2019-11-07 00:48:18,507 INFO L78 Accepts]: Start accepts. Automaton has 8078 states and 13219 transitions. Word has length 166 [2019-11-07 00:48:18,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:18,508 INFO L462 AbstractCegarLoop]: Abstraction has 8078 states and 13219 transitions. [2019-11-07 00:48:18,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:48:18,508 INFO L276 IsEmpty]: Start isEmpty. Operand 8078 states and 13219 transitions. [2019-11-07 00:48:18,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-07 00:48:18,544 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:18,545 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:48:18,545 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:18,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:18,546 INFO L82 PathProgramCache]: Analyzing trace with hash 954220666, now seen corresponding path program 1 times [2019-11-07 00:48:18,546 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:18,546 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460622564] [2019-11-07 00:48:18,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:48:18,791 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460622564] [2019-11-07 00:48:18,792 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:18,792 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 00:48:18,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537971198] [2019-11-07 00:48:18,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:48:18,793 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:18,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:48:18,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:48:18,794 INFO L87 Difference]: Start difference. First operand 8078 states and 13219 transitions. Second operand 10 states. [2019-11-07 00:48:19,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:19,200 INFO L93 Difference]: Finished difference Result 9776 states and 15440 transitions. [2019-11-07 00:48:19,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:48:19,201 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2019-11-07 00:48:19,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:19,247 INFO L225 Difference]: With dead ends: 9776 [2019-11-07 00:48:19,247 INFO L226 Difference]: Without dead ends: 8159 [2019-11-07 00:48:19,256 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:48:19,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8159 states. [2019-11-07 00:48:19,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8159 to 8140. [2019-11-07 00:48:19,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8140 states. [2019-11-07 00:48:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8140 states to 8140 states and 13309 transitions. [2019-11-07 00:48:19,705 INFO L78 Accepts]: Start accepts. Automaton has 8140 states and 13309 transitions. Word has length 166 [2019-11-07 00:48:19,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:19,706 INFO L462 AbstractCegarLoop]: Abstraction has 8140 states and 13309 transitions. [2019-11-07 00:48:19,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:48:19,706 INFO L276 IsEmpty]: Start isEmpty. Operand 8140 states and 13309 transitions. [2019-11-07 00:48:19,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-07 00:48:19,739 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:19,739 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:48:19,739 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:19,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:19,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1617182974, now seen corresponding path program 1 times [2019-11-07 00:48:19,740 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:19,740 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439737421] [2019-11-07 00:48:19,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:48:19,932 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439737421] [2019-11-07 00:48:19,932 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:19,933 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:48:19,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795923249] [2019-11-07 00:48:19,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:48:19,934 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:19,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:48:19,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:48:19,935 INFO L87 Difference]: Start difference. First operand 8140 states and 13309 transitions. Second operand 9 states. [2019-11-07 00:48:20,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:20,476 INFO L93 Difference]: Finished difference Result 8518 states and 13795 transitions. [2019-11-07 00:48:20,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 00:48:20,477 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2019-11-07 00:48:20,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:20,491 INFO L225 Difference]: With dead ends: 8518 [2019-11-07 00:48:20,492 INFO L226 Difference]: Without dead ends: 3190 [2019-11-07 00:48:20,510 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:48:20,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2019-11-07 00:48:20,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3188. [2019-11-07 00:48:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3188 states. [2019-11-07 00:48:20,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3188 states to 3188 states and 5151 transitions. [2019-11-07 00:48:20,664 INFO L78 Accepts]: Start accepts. Automaton has 3188 states and 5151 transitions. Word has length 166 [2019-11-07 00:48:20,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:20,665 INFO L462 AbstractCegarLoop]: Abstraction has 3188 states and 5151 transitions. [2019-11-07 00:48:20,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:48:20,665 INFO L276 IsEmpty]: Start isEmpty. Operand 3188 states and 5151 transitions. [2019-11-07 00:48:20,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-07 00:48:20,678 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:20,679 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:48:20,679 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:20,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:20,679 INFO L82 PathProgramCache]: Analyzing trace with hash 952842230, now seen corresponding path program 2 times [2019-11-07 00:48:20,680 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:20,680 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378522457] [2019-11-07 00:48:20,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:21,169 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-07 00:48:21,170 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378522457] [2019-11-07 00:48:21,170 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:21,170 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2019-11-07 00:48:21,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845617374] [2019-11-07 00:48:21,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-07 00:48:21,173 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:21,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-07 00:48:21,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2019-11-07 00:48:21,174 INFO L87 Difference]: Start difference. First operand 3188 states and 5151 transitions. Second operand 24 states.