/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_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:48:04,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:48:04,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:48:04,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:48:04,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:48:04,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:48:04,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:48:04,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:48:04,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:48:04,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:48:04,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:48:04,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:48:04,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:48:04,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:48:04,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:48:04,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:48:04,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:48:04,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:48:04,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:48:04,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:48:04,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:48:04,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:48:04,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:48:04,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:48:04,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:48:04,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:48:04,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:48:04,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:48:04,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:48:04,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:48:04,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:48:04,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:48:04,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:48:04,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:48:04,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:48:04,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:48:04,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:48:04,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:48:04,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:48:04,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:48:04,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:48:04,795 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 00:48:04,810 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:48:04,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:48:04,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:48:04,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:48:04,812 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:48:04,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:48:04,812 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:48:04,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:48:04,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:48:04,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:48:04,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:48:04,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:48:04,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:48:04,813 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:48:04,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:48:04,814 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:48:04,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:48:04,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:48:04,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:48:04,814 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:48:04,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:48:04,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:48:04,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:48:04,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:48:04,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:48:04,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:48:04,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:48:04,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:48:04,816 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 00:48:05,117 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:48:05,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:48:05,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:48:05,136 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:48:05,136 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:48:05,137 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product22.cil.c [2019-11-07 00:48:05,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/553107118/d0552c99777e4ea9866581df7ad196fa/FLAG0152d6758 [2019-11-07 00:48:05,862 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:48:05,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product22.cil.c [2019-11-07 00:48:05,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/553107118/d0552c99777e4ea9866581df7ad196fa/FLAG0152d6758 [2019-11-07 00:48:06,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/553107118/d0552c99777e4ea9866581df7ad196fa [2019-11-07 00:48:06,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:48:06,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:48:06,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:48:06,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:48:06,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:48:06,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:48:06" (1/1) ... [2019-11-07 00:48:06,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c3c5c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:06, skipping insertion in model container [2019-11-07 00:48:06,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:48:06" (1/1) ... [2019-11-07 00:48:06,159 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:48:06,287 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:48:07,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:48:07,178 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:48:07,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:48:07,385 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:48:07,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:07 WrapperNode [2019-11-07 00:48:07,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:48:07,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:48:07,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:48:07,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:48:07,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:07" (1/1) ... [2019-11-07 00:48:07,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:07" (1/1) ... [2019-11-07 00:48:07,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:07" (1/1) ... [2019-11-07 00:48:07,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:07" (1/1) ... [2019-11-07 00:48:07,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:07" (1/1) ... [2019-11-07 00:48:07,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:07" (1/1) ... [2019-11-07 00:48:07,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:07" (1/1) ... [2019-11-07 00:48:07,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:48:07,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:48:07,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:48:07,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:48:07,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:07" (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 00:48:07,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:48:07,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:48:07,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:48:07,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:48:07,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:48:07,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:48:07,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:48:07,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:48:07,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:48:07,740 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:48:07,740 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:48:07,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:48:07,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:48:07,742 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:48:07,742 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:48:07,742 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:48:07,745 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:48:07,745 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:48:07,745 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:48:07,745 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:48:07,746 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:48:07,746 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:48:07,747 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:48:07,747 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:48:07,747 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:48:07,747 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:48:07,747 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:48:07,748 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:48:07,748 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:48:07,748 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:48:07,749 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:48:07,749 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:48:07,749 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:48:07,750 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:48:07,750 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:48:07,750 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:48:07,751 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:48:07,751 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:48:07,751 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:48:07,751 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:48:07,752 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:48:07,752 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:48:07,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__AddressBookEncrypt_spec__1 [2019-11-07 00:48:07,752 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:48:07,753 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:48:07,753 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:48:07,753 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:48:07,753 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:48:07,753 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:48:07,754 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:48:07,754 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:48:07,754 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:48:07,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:48:07,754 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:48:07,754 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:48:07,755 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:48:07,755 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:48:07,755 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:48:07,755 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:48:07,755 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:48:07,756 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:48:07,756 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:48:07,756 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:48:07,757 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:48:07,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:48:07,757 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:48:07,757 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:48:07,757 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:48:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:48:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:48:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:48:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:48:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:48:07,759 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:48:07,759 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:48:07,759 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:48:07,759 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:48:07,760 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:48:07,760 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:48:07,760 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:48:07,761 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:48:07,761 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:48:07,761 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:48:07,761 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:48:07,762 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:48:07,763 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:48:07,763 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:48:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:48:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:48:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:48:07,765 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:48:07,765 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:48:07,765 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:48:07,765 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:48:07,765 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:48:07,765 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:48:07,766 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:48:07,766 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:48:07,766 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:48:07,766 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-11-07 00:48:07,766 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:48:07,767 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:48:07,767 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:48:07,767 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:48:07,767 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:48:07,767 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:48:07,767 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:48:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:48:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:48:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:48:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:48:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:48:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:48:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:48:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:48:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:48:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:48:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:48:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:48:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:48:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:48:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:48:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:48:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:48:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:48:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:48:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:48:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:48:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:48:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:48:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:48:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:48:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:48:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:48:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:48:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:48:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:48:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:48:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:48:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:48:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:48:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:48:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:48:07,782 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:48:07,788 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:48:07,788 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:48:07,789 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:48:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:48:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:48:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:48:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:48:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:48:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:48:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:48:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:48:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:48:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:48:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:48:07,792 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:48:07,792 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:48:07,792 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:48:07,792 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:48:07,793 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:48:07,793 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:48:07,793 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:48:07,793 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:48:07,793 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:48:07,793 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:48:07,793 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:48:07,794 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:48:07,794 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:48:07,794 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:48:07,794 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:48:07,794 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:48:07,794 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:48:07,794 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:48:07,794 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:48:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__AddressBookEncrypt_spec__1 [2019-11-07 00:48:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:48:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:48:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:48:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:48:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:48:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:48:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:48:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:48:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:48:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:48:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:48:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:48:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:48:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:48:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:48:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:48:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:48:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:48:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:48:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:48:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:48:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:48:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:48:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:48:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:48:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:48:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:48:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:48:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:48:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:48:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:48:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:48:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:48:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:48:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:48:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:48:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:48:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:48:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:48:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:48:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:48:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:48:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:48:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:48:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:48:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:48:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:48:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:48:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:48:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:48:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:48:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:48:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:48:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:48:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:48:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:48:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-11-07 00:48:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:48:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:48:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:48:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:48:10,301 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:48:10,301 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:48:10,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:48:10 BoogieIcfgContainer [2019-11-07 00:48:10,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:48:10,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:48:10,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:48:10,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:48:10,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:48:06" (1/3) ... [2019-11-07 00:48:10,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6733cd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:48:10, skipping insertion in model container [2019-11-07 00:48:10,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:07" (2/3) ... [2019-11-07 00:48:10,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6733cd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:48:10, skipping insertion in model container [2019-11-07 00:48:10,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:48:10" (3/3) ... [2019-11-07 00:48:10,314 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec1_product22.cil.c [2019-11-07 00:48:10,324 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:48:10,334 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:48:10,346 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:48:10,385 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:48:10,385 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:48:10,385 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:48:10,386 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:48:10,386 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:48:10,386 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:48:10,386 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:48:10,386 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:48:10,429 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states. [2019-11-07 00:48:10,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-07 00:48:10,467 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:10,469 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 00:48:10,471 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:10,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:10,480 INFO L82 PathProgramCache]: Analyzing trace with hash -262488185, now seen corresponding path program 1 times [2019-11-07 00:48:10,492 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:10,492 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465012983] [2019-11-07 00:48:10,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:11,208 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 00:48:11,209 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465012983] [2019-11-07 00:48:11,210 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:11,210 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:48:11,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746574733] [2019-11-07 00:48:11,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:48:11,218 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:11,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:48:11,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:48:11,237 INFO L87 Difference]: Start difference. First operand 508 states. Second operand 2 states. [2019-11-07 00:48:11,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:11,322 INFO L93 Difference]: Finished difference Result 747 states and 983 transitions. [2019-11-07 00:48:11,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:48:11,324 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 145 [2019-11-07 00:48:11,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:11,347 INFO L225 Difference]: With dead ends: 747 [2019-11-07 00:48:11,348 INFO L226 Difference]: Without dead ends: 485 [2019-11-07 00:48:11,357 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 00:48:11,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2019-11-07 00:48:11,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2019-11-07 00:48:11,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-11-07 00:48:11,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 643 transitions. [2019-11-07 00:48:11,477 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 643 transitions. Word has length 145 [2019-11-07 00:48:11,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:11,479 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 643 transitions. [2019-11-07 00:48:11,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:48:11,479 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 643 transitions. [2019-11-07 00:48:11,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-07 00:48:11,483 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:11,484 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 00:48:11,484 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:11,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:11,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1163189320, now seen corresponding path program 1 times [2019-11-07 00:48:11,485 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:11,485 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225020069] [2019-11-07 00:48:11,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:11,750 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 00:48:11,751 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225020069] [2019-11-07 00:48:11,751 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:11,751 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:48:11,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917062661] [2019-11-07 00:48:11,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:48:11,753 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:11,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:48:11,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:48:11,754 INFO L87 Difference]: Start difference. First operand 485 states and 643 transitions. Second operand 3 states. [2019-11-07 00:48:11,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:11,798 INFO L93 Difference]: Finished difference Result 730 states and 952 transitions. [2019-11-07 00:48:11,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:48:11,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2019-11-07 00:48:11,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:11,804 INFO L225 Difference]: With dead ends: 730 [2019-11-07 00:48:11,804 INFO L226 Difference]: Without dead ends: 488 [2019-11-07 00:48:11,807 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 00:48:11,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2019-11-07 00:48:11,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2019-11-07 00:48:11,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2019-11-07 00:48:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 645 transitions. [2019-11-07 00:48:11,833 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 645 transitions. Word has length 146 [2019-11-07 00:48:11,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:11,834 INFO L462 AbstractCegarLoop]: Abstraction has 487 states and 645 transitions. [2019-11-07 00:48:11,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:48:11,834 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 645 transitions. [2019-11-07 00:48:11,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-11-07 00:48:11,836 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:11,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:48:11,837 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:11,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:11,837 INFO L82 PathProgramCache]: Analyzing trace with hash -180533913, now seen corresponding path program 1 times [2019-11-07 00:48:11,838 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:11,838 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837722235] [2019-11-07 00:48:11,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:12,088 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 00:48:12,089 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837722235] [2019-11-07 00:48:12,089 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:12,089 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:48:12,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98903002] [2019-11-07 00:48:12,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:48:12,090 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:12,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:48:12,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:48:12,091 INFO L87 Difference]: Start difference. First operand 487 states and 645 transitions. Second operand 3 states. [2019-11-07 00:48:12,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:12,141 INFO L93 Difference]: Finished difference Result 952 states and 1291 transitions. [2019-11-07 00:48:12,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:48:12,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-11-07 00:48:12,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:12,151 INFO L225 Difference]: With dead ends: 952 [2019-11-07 00:48:12,151 INFO L226 Difference]: Without dead ends: 530 [2019-11-07 00:48:12,154 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 00:48:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2019-11-07 00:48:12,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 529. [2019-11-07 00:48:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2019-11-07 00:48:12,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 717 transitions. [2019-11-07 00:48:12,214 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 717 transitions. Word has length 158 [2019-11-07 00:48:12,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:12,218 INFO L462 AbstractCegarLoop]: Abstraction has 529 states and 717 transitions. [2019-11-07 00:48:12,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:48:12,218 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 717 transitions. [2019-11-07 00:48:12,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-11-07 00:48:12,231 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:12,231 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:48:12,232 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:12,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:12,232 INFO L82 PathProgramCache]: Analyzing trace with hash 541479896, now seen corresponding path program 1 times [2019-11-07 00:48:12,233 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:12,233 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219479233] [2019-11-07 00:48:12,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:12,468 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 00:48:12,469 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219479233] [2019-11-07 00:48:12,469 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:12,471 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:48:12,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482564646] [2019-11-07 00:48:12,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:48:12,474 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:12,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:48:12,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:48:12,475 INFO L87 Difference]: Start difference. First operand 529 states and 717 transitions. Second operand 3 states. [2019-11-07 00:48:12,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:12,530 INFO L93 Difference]: Finished difference Result 1075 states and 1502 transitions. [2019-11-07 00:48:12,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:48:12,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-11-07 00:48:12,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:12,540 INFO L225 Difference]: With dead ends: 1075 [2019-11-07 00:48:12,540 INFO L226 Difference]: Without dead ends: 611 [2019-11-07 00:48:12,543 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 00:48:12,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2019-11-07 00:48:12,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 610. [2019-11-07 00:48:12,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2019-11-07 00:48:12,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 855 transitions. [2019-11-07 00:48:12,591 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 855 transitions. Word has length 159 [2019-11-07 00:48:12,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:12,592 INFO L462 AbstractCegarLoop]: Abstraction has 610 states and 855 transitions. [2019-11-07 00:48:12,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:48:12,593 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 855 transitions. [2019-11-07 00:48:12,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-11-07 00:48:12,602 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:12,603 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:48:12,603 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:12,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:12,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1088431641, now seen corresponding path program 1 times [2019-11-07 00:48:12,604 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:12,605 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359665017] [2019-11-07 00:48:12,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:12,847 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 00:48:12,848 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359665017] [2019-11-07 00:48:12,848 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:12,848 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:48:12,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069134028] [2019-11-07 00:48:12,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:48:12,850 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:12,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:48:12,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:48:12,851 INFO L87 Difference]: Start difference. First operand 610 states and 855 transitions. Second operand 3 states. [2019-11-07 00:48:12,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:12,899 INFO L93 Difference]: Finished difference Result 1312 states and 1906 transitions. [2019-11-07 00:48:12,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:48:12,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2019-11-07 00:48:12,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:12,981 INFO L225 Difference]: With dead ends: 1312 [2019-11-07 00:48:12,982 INFO L226 Difference]: Without dead ends: 767 [2019-11-07 00:48:12,983 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 00:48:12,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2019-11-07 00:48:13,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 766. [2019-11-07 00:48:13,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2019-11-07 00:48:13,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1119 transitions. [2019-11-07 00:48:13,020 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1119 transitions. Word has length 160 [2019-11-07 00:48:13,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:13,021 INFO L462 AbstractCegarLoop]: Abstraction has 766 states and 1119 transitions. [2019-11-07 00:48:13,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:48:13,021 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1119 transitions. [2019-11-07 00:48:13,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-07 00:48:13,025 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:13,025 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 00:48:13,026 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:13,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:13,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1690260276, now seen corresponding path program 1 times [2019-11-07 00:48:13,026 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:13,026 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184081327] [2019-11-07 00:48:13,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:14,066 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 00:48:14,066 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184081327] [2019-11-07 00:48:14,067 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:14,067 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2019-11-07 00:48:14,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202318996] [2019-11-07 00:48:14,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-07 00:48:14,069 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:14,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-07 00:48:14,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:48:14,070 INFO L87 Difference]: Start difference. First operand 766 states and 1119 transitions. Second operand 35 states. [2019-11-07 00:48:19,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:19,335 INFO L93 Difference]: Finished difference Result 2240 states and 3350 transitions. [2019-11-07 00:48:19,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-11-07 00:48:19,335 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 162 [2019-11-07 00:48:19,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:19,348 INFO L225 Difference]: With dead ends: 2240 [2019-11-07 00:48:19,349 INFO L226 Difference]: Without dead ends: 1506 [2019-11-07 00:48:19,356 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=298, Invalid=4124, Unknown=0, NotChecked=0, Total=4422 [2019-11-07 00:48:19,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2019-11-07 00:48:19,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1239. [2019-11-07 00:48:19,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2019-11-07 00:48:19,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1916 transitions. [2019-11-07 00:48:19,452 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1916 transitions. Word has length 162 [2019-11-07 00:48:19,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:19,454 INFO L462 AbstractCegarLoop]: Abstraction has 1239 states and 1916 transitions. [2019-11-07 00:48:19,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-11-07 00:48:19,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1916 transitions. [2019-11-07 00:48:19,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-07 00:48:19,463 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:19,464 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:48:19,464 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:19,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:19,465 INFO L82 PathProgramCache]: Analyzing trace with hash 490161090, now seen corresponding path program 1 times [2019-11-07 00:48:19,465 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:19,465 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158852990] [2019-11-07 00:48:19,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:19,631 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 00:48:19,631 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158852990] [2019-11-07 00:48:19,631 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:19,632 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:48:19,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343919969] [2019-11-07 00:48:19,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:48:19,633 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:19,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:48:19,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:48:19,634 INFO L87 Difference]: Start difference. First operand 1239 states and 1916 transitions. Second operand 3 states. [2019-11-07 00:48:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:19,724 INFO L93 Difference]: Finished difference Result 3000 states and 4794 transitions. [2019-11-07 00:48:19,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:48:19,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-11-07 00:48:19,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:19,737 INFO L225 Difference]: With dead ends: 3000 [2019-11-07 00:48:19,737 INFO L226 Difference]: Without dead ends: 1840 [2019-11-07 00:48:19,743 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 00:48:19,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2019-11-07 00:48:19,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1839. [2019-11-07 00:48:19,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1839 states. [2019-11-07 00:48:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2952 transitions. [2019-11-07 00:48:19,930 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2952 transitions. Word has length 162 [2019-11-07 00:48:19,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:19,931 INFO L462 AbstractCegarLoop]: Abstraction has 1839 states and 2952 transitions. [2019-11-07 00:48:19,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:48:19,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2952 transitions. [2019-11-07 00:48:19,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-11-07 00:48:19,944 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:19,944 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 00:48:19,944 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:19,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:19,945 INFO L82 PathProgramCache]: Analyzing trace with hash -449351993, now seen corresponding path program 1 times [2019-11-07 00:48:19,945 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:19,946 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397569857] [2019-11-07 00:48:19,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:20,744 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 00:48:20,745 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397569857] [2019-11-07 00:48:20,745 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171532153] [2019-11-07 00:48:20,745 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 00:48:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:21,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:48:21,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:48:21,679 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 00:48:21,679 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:48:22,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:48:22,115 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:48:22,181 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 00:48:22,181 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:48:22,182 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [31, 7] total 39 [2019-11-07 00:48:22,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572380104] [2019-11-07 00:48:22,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:48:22,183 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:22,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:48:22,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1372, Unknown=0, NotChecked=0, Total=1482 [2019-11-07 00:48:22,184 INFO L87 Difference]: Start difference. First operand 1839 states and 2952 transitions. Second operand 7 states. [2019-11-07 00:48:23,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:23,342 INFO L93 Difference]: Finished difference Result 3631 states and 5869 transitions. [2019-11-07 00:48:23,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:48:23,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2019-11-07 00:48:23,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:23,357 INFO L225 Difference]: With dead ends: 3631 [2019-11-07 00:48:23,358 INFO L226 Difference]: Without dead ends: 1843 [2019-11-07 00:48:23,370 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 00:48:23,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2019-11-07 00:48:23,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1843. [2019-11-07 00:48:23,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2019-11-07 00:48:23,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2957 transitions. [2019-11-07 00:48:23,525 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2957 transitions. Word has length 164 [2019-11-07 00:48:23,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:23,526 INFO L462 AbstractCegarLoop]: Abstraction has 1843 states and 2957 transitions. [2019-11-07 00:48:23,526 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:48:23,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2957 transitions. [2019-11-07 00:48:23,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-11-07 00:48:23,537 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:23,538 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 00:48:23,746 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:48:23,746 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:23,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:23,747 INFO L82 PathProgramCache]: Analyzing trace with hash 925448506, now seen corresponding path program 1 times [2019-11-07 00:48:23,747 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:23,747 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062563480] [2019-11-07 00:48:23,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:24,273 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 00:48:24,273 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062563480] [2019-11-07 00:48:24,273 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:24,274 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-11-07 00:48:24,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609531433] [2019-11-07 00:48:24,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-07 00:48:24,275 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:24,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-07 00:48:24,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2019-11-07 00:48:24,275 INFO L87 Difference]: Start difference. First operand 1843 states and 2957 transitions. Second operand 26 states. [2019-11-07 00:48:32,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:32,859 INFO L93 Difference]: Finished difference Result 4632 states and 7133 transitions. [2019-11-07 00:48:32,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-11-07 00:48:32,861 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 165 [2019-11-07 00:48:32,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:32,890 INFO L225 Difference]: With dead ends: 4632 [2019-11-07 00:48:32,891 INFO L226 Difference]: Without dead ends: 4399 [2019-11-07 00:48:32,897 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=724, Invalid=5596, Unknown=0, NotChecked=0, Total=6320 [2019-11-07 00:48:32,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2019-11-07 00:48:33,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 3874. [2019-11-07 00:48:33,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3874 states. [2019-11-07 00:48:33,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 6175 transitions. [2019-11-07 00:48:33,175 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 6175 transitions. Word has length 165 [2019-11-07 00:48:33,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:33,178 INFO L462 AbstractCegarLoop]: Abstraction has 3874 states and 6175 transitions. [2019-11-07 00:48:33,178 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-07 00:48:33,178 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 6175 transitions. [2019-11-07 00:48:33,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-07 00:48:33,207 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:33,208 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 00:48:33,208 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:33,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:33,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1756664070, now seen corresponding path program 1 times [2019-11-07 00:48:33,209 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:33,210 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327583843] [2019-11-07 00:48:33,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:33,435 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 00:48:33,435 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327583843] [2019-11-07 00:48:33,436 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:33,436 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:48:33,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80530146] [2019-11-07 00:48:33,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:48:33,438 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:33,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:48:33,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:48:33,438 INFO L87 Difference]: Start difference. First operand 3874 states and 6175 transitions. Second operand 9 states. [2019-11-07 00:48:33,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:33,754 INFO L93 Difference]: Finished difference Result 4618 states and 7150 transitions. [2019-11-07 00:48:33,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:48:33,755 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2019-11-07 00:48:33,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:33,788 INFO L225 Difference]: With dead ends: 4618 [2019-11-07 00:48:33,789 INFO L226 Difference]: Without dead ends: 3914 [2019-11-07 00:48:33,794 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:48:33,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2019-11-07 00:48:34,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3909. [2019-11-07 00:48:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3909 states. [2019-11-07 00:48:34,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 6229 transitions. [2019-11-07 00:48:34,086 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 6229 transitions. Word has length 166 [2019-11-07 00:48:34,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:34,087 INFO L462 AbstractCegarLoop]: Abstraction has 3909 states and 6229 transitions. [2019-11-07 00:48:34,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:48:34,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 6229 transitions. [2019-11-07 00:48:34,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-07 00:48:34,108 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:34,109 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 00:48:34,109 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:34,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:34,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1089317603, now seen corresponding path program 1 times [2019-11-07 00:48:34,110 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:34,110 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642985477] [2019-11-07 00:48:34,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:34,262 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 00:48:34,262 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642985477] [2019-11-07 00:48:34,263 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:34,263 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:48:34,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914610718] [2019-11-07 00:48:34,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:48:34,264 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:34,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:48:34,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:48:34,265 INFO L87 Difference]: Start difference. First operand 3909 states and 6229 transitions. Second operand 5 states. [2019-11-07 00:48:35,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:35,773 INFO L93 Difference]: Finished difference Result 7639 states and 11874 transitions. [2019-11-07 00:48:35,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:48:35,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2019-11-07 00:48:35,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:35,821 INFO L225 Difference]: With dead ends: 7639 [2019-11-07 00:48:35,822 INFO L226 Difference]: Without dead ends: 6922 [2019-11-07 00:48:35,827 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:48:35,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6922 states. [2019-11-07 00:48:36,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6922 to 6143. [2019-11-07 00:48:36,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6143 states. [2019-11-07 00:48:36,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6143 states to 6143 states and 9531 transitions. [2019-11-07 00:48:36,214 INFO L78 Accepts]: Start accepts. Automaton has 6143 states and 9531 transitions. Word has length 166 [2019-11-07 00:48:36,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:36,215 INFO L462 AbstractCegarLoop]: Abstraction has 6143 states and 9531 transitions. [2019-11-07 00:48:36,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:48:36,215 INFO L276 IsEmpty]: Start isEmpty. Operand 6143 states and 9531 transitions. [2019-11-07 00:48:36,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-07 00:48:36,237 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:36,237 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 00:48:36,237 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:36,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:36,238 INFO L82 PathProgramCache]: Analyzing trace with hash -920786238, now seen corresponding path program 1 times [2019-11-07 00:48:36,238 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:36,238 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125768038] [2019-11-07 00:48:36,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:36,422 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 00:48:36,422 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125768038] [2019-11-07 00:48:36,423 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:36,423 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:48:36,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822010611] [2019-11-07 00:48:36,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:48:36,425 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:36,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:48:36,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:48:36,426 INFO L87 Difference]: Start difference. First operand 6143 states and 9531 transitions. Second operand 9 states. [2019-11-07 00:48:36,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:36,922 INFO L93 Difference]: Finished difference Result 6631 states and 10154 transitions. [2019-11-07 00:48:36,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 00:48:36,923 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2019-11-07 00:48:36,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:36,957 INFO L225 Difference]: With dead ends: 6631 [2019-11-07 00:48:36,957 INFO L226 Difference]: Without dead ends: 2349 [2019-11-07 00:48:36,972 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 00:48:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2019-11-07 00:48:37,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2347. [2019-11-07 00:48:37,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2347 states. [2019-11-07 00:48:37,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 3602 transitions. [2019-11-07 00:48:37,155 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 3602 transitions. Word has length 166 [2019-11-07 00:48:37,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:37,156 INFO L462 AbstractCegarLoop]: Abstraction has 2347 states and 3602 transitions. [2019-11-07 00:48:37,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:48:37,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 3602 transitions. [2019-11-07 00:48:37,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-07 00:48:37,175 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:37,175 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 00:48:37,176 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:37,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:37,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1797759892, now seen corresponding path program 2 times [2019-11-07 00:48:37,177 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:37,177 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150621971] [2019-11-07 00:48:37,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:37,801 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 00:48:37,801 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150621971] [2019-11-07 00:48:37,802 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:37,802 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2019-11-07 00:48:37,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547134190] [2019-11-07 00:48:37,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-07 00:48:37,803 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:37,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-07 00:48:37,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2019-11-07 00:48:37,804 INFO L87 Difference]: Start difference. First operand 2347 states and 3602 transitions. Second operand 24 states.