/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_spec0_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:45:42,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:45:42,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:45:42,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:45:42,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:45:42,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:45:42,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:45:42,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:45:42,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:45:42,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:45:42,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:45:42,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:45:42,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:45:42,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:45:42,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:45:42,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:45:42,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:45:42,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:45:42,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:45:42,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:45:42,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:45:42,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:45:42,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:45:42,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:45:42,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:45:42,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:45:42,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:45:42,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:45:42,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:45:42,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:45:42,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:45:42,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:45:42,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:45:42,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:45:42,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:45:42,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:45:42,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:45:42,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:45:42,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:45:42,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:45:42,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:45:42,178 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 00:45:42,213 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:45:42,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:45:42,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:45:42,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:45:42,219 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:45:42,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:45:42,219 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:45:42,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:45:42,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:45:42,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:45:42,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:45:42,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:45:42,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:45:42,220 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:45:42,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:45:42,223 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:45:42,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:45:42,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:45:42,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:45:42,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:45:42,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:45:42,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:45:42,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:45:42,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:45:42,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:45:42,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:45:42,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:45:42,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:45:42,226 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 00:45:42,520 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:45:42,533 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:45:42,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:45:42,538 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:45:42,539 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:45:42,540 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product16.cil.c [2019-11-07 00:45:42,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ab8d4b81/42446f1d10a340d0aad2addc1f4eac20/FLAG318395126 [2019-11-07 00:45:43,217 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:45:43,217 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product16.cil.c [2019-11-07 00:45:43,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ab8d4b81/42446f1d10a340d0aad2addc1f4eac20/FLAG318395126 [2019-11-07 00:45:43,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ab8d4b81/42446f1d10a340d0aad2addc1f4eac20 [2019-11-07 00:45:43,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:45:43,441 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:45:43,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:45:43,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:45:43,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:45:43,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:45:43" (1/1) ... [2019-11-07 00:45:43,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f5ef925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:43, skipping insertion in model container [2019-11-07 00:45:43,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:45:43" (1/1) ... [2019-11-07 00:45:43,460 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:45:43,536 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:45:44,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:45:44,332 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:45:44,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:45:44,637 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:45:44,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:44 WrapperNode [2019-11-07 00:45:44,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:45:44,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:45:44,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:45:44,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:45:44,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:44" (1/1) ... [2019-11-07 00:45:44,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:44" (1/1) ... [2019-11-07 00:45:44,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:44" (1/1) ... [2019-11-07 00:45:44,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:44" (1/1) ... [2019-11-07 00:45:44,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:44" (1/1) ... [2019-11-07 00:45:44,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:44" (1/1) ... [2019-11-07 00:45:44,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:44" (1/1) ... [2019-11-07 00:45:44,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:45:44,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:45:44,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:45:44,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:45:44,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:44" (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 00:45:44,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:45:44,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:45:44,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:45:44,902 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:45:44,902 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:45:44,903 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:45:44,903 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:45:44,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:45:44,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:45:44,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:45:44,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:45:44,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:45:44,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:45:44,904 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:45:44,905 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:45:44,905 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:45:44,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:45:44,905 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:45:44,906 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:45:44,906 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:45:44,906 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:45:44,906 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:45:44,907 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:45:44,907 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:45:44,907 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:45:44,907 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:45:44,907 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:45:44,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:45:44,908 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:45:44,908 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:45:44,908 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:45:44,908 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:45:44,909 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:45:44,909 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:45:44,909 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:45:44,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:45:44,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:45:44,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:45:44,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:45:44,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:45:44,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:45:44,910 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:45:44,910 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:45:44,910 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:45:44,911 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:45:44,911 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:45:44,911 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:45:44,911 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:45:44,911 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:45:44,911 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:45:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:45:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:45:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:45:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:45:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:45:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:45:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:45:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:45:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:45:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:45:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:45:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:45:44,914 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:45:44,914 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:45:44,914 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:45:44,914 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:45:44,914 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:45:44,915 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:45:44,915 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:45:44,915 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:45:44,915 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:45:44,915 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:45:44,915 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:45:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:45:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:45:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:45:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:45:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:45:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:45:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:45:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:45:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:45:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:45:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:45:44,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:45:44,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:45:44,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:45:44,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:45:44,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:45:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:45:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:45:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptForward_spec__1 [2019-11-07 00:45:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:45:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:45:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:45:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:45:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:45:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:45:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:45:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:45:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:45:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:45:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:45:44,921 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:45:44,921 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:45:44,921 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:45:44,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:45:44,921 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:45:44,921 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:45:44,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:45:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:45:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:45:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:45:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:45:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:45:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:45:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:45:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:45:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:45:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:45:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:45:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:45:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:45:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:45:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:45:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:45:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:45:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:45:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:45:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:45:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:45:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:45:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:45:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:45:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:45:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:45:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:45:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:45:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:45:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:45:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:45:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:45:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:45:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:45:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:45:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:45:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:45:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:45:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:45:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:45:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:45:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:45:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:45:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:45:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:45:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:45:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:45:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:45:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:45:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:45:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:45:44,931 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:45:44,931 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:45:44,931 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:45:44,931 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:45:44,931 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:45:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:45:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:45:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:45:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:45:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:45:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:45:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:45:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:45:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:45:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:45:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:45:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:45:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:45:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:45:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:45:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:45:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:45:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:45:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:45:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:45:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:45:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:45:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:45:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:45:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:45:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:45:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:45:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:45:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:45:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:45:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:45:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:45:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:45:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:45:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptForward_spec__1 [2019-11-07 00:45:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:45:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:45:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:45:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:45:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:45:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:45:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:45:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:45:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:45:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:45:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:45:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:45:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:45:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:45:46,927 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:45:46,928 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:45:46,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:45:46 BoogieIcfgContainer [2019-11-07 00:45:46,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:45:46,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:45:46,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:45:46,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:45:46,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:45:43" (1/3) ... [2019-11-07 00:45:46,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546c2e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:45:46, skipping insertion in model container [2019-11-07 00:45:46,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:44" (2/3) ... [2019-11-07 00:45:46,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546c2e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:45:46, skipping insertion in model container [2019-11-07 00:45:46,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:45:46" (3/3) ... [2019-11-07 00:45:46,940 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec0_product16.cil.c [2019-11-07 00:45:46,951 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:45:46,965 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:45:46,979 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:45:47,022 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:45:47,022 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:45:47,022 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:45:47,023 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:45:47,024 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:45:47,024 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:45:47,024 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:45:47,024 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:45:47,064 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states. [2019-11-07 00:45:47,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-11-07 00:45:47,099 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:47,100 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:47,102 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:47,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:47,109 INFO L82 PathProgramCache]: Analyzing trace with hash -302652635, now seen corresponding path program 1 times [2019-11-07 00:45:47,120 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:47,124 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708476757] [2019-11-07 00:45:47,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:45:47,805 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708476757] [2019-11-07 00:45:47,806 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:47,806 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:45:47,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206280299] [2019-11-07 00:45:47,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:45:47,823 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:47,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:45:47,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:45:47,840 INFO L87 Difference]: Start difference. First operand 473 states. Second operand 2 states. [2019-11-07 00:45:47,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:47,928 INFO L93 Difference]: Finished difference Result 688 states and 906 transitions. [2019-11-07 00:45:47,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:45:47,930 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 189 [2019-11-07 00:45:47,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:47,967 INFO L225 Difference]: With dead ends: 688 [2019-11-07 00:45:47,967 INFO L226 Difference]: Without dead ends: 450 [2019-11-07 00:45:47,973 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 00:45:47,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2019-11-07 00:45:48,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2019-11-07 00:45:48,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2019-11-07 00:45:48,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 596 transitions. [2019-11-07 00:45:48,073 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 596 transitions. Word has length 189 [2019-11-07 00:45:48,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:48,077 INFO L462 AbstractCegarLoop]: Abstraction has 450 states and 596 transitions. [2019-11-07 00:45:48,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:45:48,077 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 596 transitions. [2019-11-07 00:45:48,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-11-07 00:45:48,087 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:48,087 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:48,088 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:48,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:48,088 INFO L82 PathProgramCache]: Analyzing trace with hash -182666753, now seen corresponding path program 1 times [2019-11-07 00:45:48,088 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:48,089 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404961453] [2019-11-07 00:45:48,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:48,394 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:45:48,394 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404961453] [2019-11-07 00:45:48,394 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:48,395 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:45:48,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346650853] [2019-11-07 00:45:48,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:45:48,409 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:48,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:45:48,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:45:48,414 INFO L87 Difference]: Start difference. First operand 450 states and 596 transitions. Second operand 3 states. [2019-11-07 00:45:48,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:48,493 INFO L93 Difference]: Finished difference Result 671 states and 872 transitions. [2019-11-07 00:45:48,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:45:48,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2019-11-07 00:45:48,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:48,503 INFO L225 Difference]: With dead ends: 671 [2019-11-07 00:45:48,503 INFO L226 Difference]: Without dead ends: 453 [2019-11-07 00:45:48,509 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 00:45:48,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2019-11-07 00:45:48,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 452. [2019-11-07 00:45:48,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2019-11-07 00:45:48,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 598 transitions. [2019-11-07 00:45:48,608 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 598 transitions. Word has length 190 [2019-11-07 00:45:48,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:48,610 INFO L462 AbstractCegarLoop]: Abstraction has 452 states and 598 transitions. [2019-11-07 00:45:48,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:45:48,610 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 598 transitions. [2019-11-07 00:45:48,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-11-07 00:45:48,614 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:48,614 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:48,615 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:48,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:48,615 INFO L82 PathProgramCache]: Analyzing trace with hash -2135910709, now seen corresponding path program 1 times [2019-11-07 00:45:48,616 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:48,616 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891668004] [2019-11-07 00:45:48,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:45:48,768 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891668004] [2019-11-07 00:45:48,769 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:48,769 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:45:48,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595410308] [2019-11-07 00:45:48,772 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:45:48,774 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:48,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:45:48,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:45:48,775 INFO L87 Difference]: Start difference. First operand 452 states and 598 transitions. Second operand 3 states. [2019-11-07 00:45:48,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:48,838 INFO L93 Difference]: Finished difference Result 880 states and 1194 transitions. [2019-11-07 00:45:48,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:45:48,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-11-07 00:45:48,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:48,847 INFO L225 Difference]: With dead ends: 880 [2019-11-07 00:45:48,848 INFO L226 Difference]: Without dead ends: 493 [2019-11-07 00:45:48,851 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 00:45:48,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2019-11-07 00:45:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 492. [2019-11-07 00:45:48,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2019-11-07 00:45:48,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 667 transitions. [2019-11-07 00:45:48,901 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 667 transitions. Word has length 196 [2019-11-07 00:45:48,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:48,902 INFO L462 AbstractCegarLoop]: Abstraction has 492 states and 667 transitions. [2019-11-07 00:45:48,902 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:45:48,903 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 667 transitions. [2019-11-07 00:45:48,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-11-07 00:45:48,908 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:48,909 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:48,909 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:48,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:48,910 INFO L82 PathProgramCache]: Analyzing trace with hash -318353265, now seen corresponding path program 1 times [2019-11-07 00:45:48,910 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:48,910 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204933580] [2019-11-07 00:45:48,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:49,467 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:45:49,467 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204933580] [2019-11-07 00:45:49,468 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:49,468 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-11-07 00:45:49,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734332845] [2019-11-07 00:45:49,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-07 00:45:49,469 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:49,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-07 00:45:49,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:45:49,471 INFO L87 Difference]: Start difference. First operand 492 states and 667 transitions. Second operand 19 states. [2019-11-07 00:45:53,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:53,745 INFO L93 Difference]: Finished difference Result 1632 states and 2213 transitions. [2019-11-07 00:45:53,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-11-07 00:45:53,745 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 197 [2019-11-07 00:45:53,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:53,760 INFO L225 Difference]: With dead ends: 1632 [2019-11-07 00:45:53,760 INFO L226 Difference]: Without dead ends: 1427 [2019-11-07 00:45:53,763 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-11-07 00:45:53,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2019-11-07 00:45:53,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1390. [2019-11-07 00:45:53,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1390 states. [2019-11-07 00:45:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1897 transitions. [2019-11-07 00:45:53,888 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1897 transitions. Word has length 197 [2019-11-07 00:45:53,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:53,889 INFO L462 AbstractCegarLoop]: Abstraction has 1390 states and 1897 transitions. [2019-11-07 00:45:53,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-07 00:45:53,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1897 transitions. [2019-11-07 00:45:53,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-11-07 00:45:53,895 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:53,895 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:53,895 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:53,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:53,896 INFO L82 PathProgramCache]: Analyzing trace with hash 309681099, now seen corresponding path program 1 times [2019-11-07 00:45:53,896 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:53,896 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716189642] [2019-11-07 00:45:53,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:54,131 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:45:54,132 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716189642] [2019-11-07 00:45:54,132 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:54,133 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:45:54,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666964567] [2019-11-07 00:45:54,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:45:54,134 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:54,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:45:54,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:45:54,135 INFO L87 Difference]: Start difference. First operand 1390 states and 1897 transitions. Second operand 9 states. [2019-11-07 00:45:54,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:54,481 INFO L93 Difference]: Finished difference Result 2315 states and 3109 transitions. [2019-11-07 00:45:54,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:45:54,482 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 198 [2019-11-07 00:45:54,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:54,493 INFO L225 Difference]: With dead ends: 2315 [2019-11-07 00:45:54,493 INFO L226 Difference]: Without dead ends: 1436 [2019-11-07 00:45:54,497 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 00:45:54,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2019-11-07 00:45:54,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2019-11-07 00:45:54,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2019-11-07 00:45:54,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1970 transitions. [2019-11-07 00:45:54,577 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1970 transitions. Word has length 198 [2019-11-07 00:45:54,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:54,579 INFO L462 AbstractCegarLoop]: Abstraction has 1436 states and 1970 transitions. [2019-11-07 00:45:54,579 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:45:54,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1970 transitions. [2019-11-07 00:45:54,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-11-07 00:45:54,584 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:54,585 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:54,585 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:54,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:54,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1834515197, now seen corresponding path program 1 times [2019-11-07 00:45:54,586 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:54,586 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173517465] [2019-11-07 00:45:54,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:54,830 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:45:54,831 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173517465] [2019-11-07 00:45:54,831 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:54,831 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:45:54,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364753367] [2019-11-07 00:45:54,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:45:54,832 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:54,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:45:54,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:45:54,833 INFO L87 Difference]: Start difference. First operand 1436 states and 1970 transitions. Second operand 5 states. [2019-11-07 00:45:55,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:55,799 INFO L93 Difference]: Finished difference Result 3494 states and 4736 transitions. [2019-11-07 00:45:55,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:45:55,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2019-11-07 00:45:55,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:55,828 INFO L225 Difference]: With dead ends: 3494 [2019-11-07 00:45:55,828 INFO L226 Difference]: Without dead ends: 3040 [2019-11-07 00:45:55,842 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 00:45:55,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2019-11-07 00:45:56,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 3020. [2019-11-07 00:45:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3020 states. [2019-11-07 00:45:56,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 4117 transitions. [2019-11-07 00:45:56,083 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 4117 transitions. Word has length 198 [2019-11-07 00:45:56,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:56,084 INFO L462 AbstractCegarLoop]: Abstraction has 3020 states and 4117 transitions. [2019-11-07 00:45:56,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:45:56,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 4117 transitions. [2019-11-07 00:45:56,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-11-07 00:45:56,093 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:56,094 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:56,094 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:56,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:56,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1351636900, now seen corresponding path program 1 times [2019-11-07 00:45:56,095 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:56,095 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005623796] [2019-11-07 00:45:56,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:56,367 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:45:56,367 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005623796] [2019-11-07 00:45:56,367 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:56,368 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:56,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746397015] [2019-11-07 00:45:56,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:56,369 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:56,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:56,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:56,369 INFO L87 Difference]: Start difference. First operand 3020 states and 4117 transitions. Second operand 6 states. [2019-11-07 00:45:57,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:57,084 INFO L93 Difference]: Finished difference Result 8271 states and 11200 transitions. [2019-11-07 00:45:57,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:45:57,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 198 [2019-11-07 00:45:57,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:57,139 INFO L225 Difference]: With dead ends: 8271 [2019-11-07 00:45:57,140 INFO L226 Difference]: Without dead ends: 6075 [2019-11-07 00:45:57,154 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:45:57,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6075 states. [2019-11-07 00:45:57,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6075 to 6032. [2019-11-07 00:45:57,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6032 states. [2019-11-07 00:45:57,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6032 states to 6032 states and 8228 transitions. [2019-11-07 00:45:57,739 INFO L78 Accepts]: Start accepts. Automaton has 6032 states and 8228 transitions. Word has length 198 [2019-11-07 00:45:57,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:57,740 INFO L462 AbstractCegarLoop]: Abstraction has 6032 states and 8228 transitions. [2019-11-07 00:45:57,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:45:57,740 INFO L276 IsEmpty]: Start isEmpty. Operand 6032 states and 8228 transitions. [2019-11-07 00:45:57,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-11-07 00:45:57,754 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:57,754 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:57,755 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:57,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:57,755 INFO L82 PathProgramCache]: Analyzing trace with hash 156692310, now seen corresponding path program 1 times [2019-11-07 00:45:57,755 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:57,755 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415732349] [2019-11-07 00:45:57,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:45:57,937 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415732349] [2019-11-07 00:45:57,937 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:57,937 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:45:57,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074806812] [2019-11-07 00:45:57,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:45:57,939 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:57,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:45:57,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:45:57,940 INFO L87 Difference]: Start difference. First operand 6032 states and 8228 transitions. Second operand 9 states. [2019-11-07 00:45:58,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:58,253 INFO L93 Difference]: Finished difference Result 11011 states and 14871 transitions. [2019-11-07 00:45:58,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:45:58,254 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 199 [2019-11-07 00:45:58,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:58,302 INFO L225 Difference]: With dead ends: 11011 [2019-11-07 00:45:58,302 INFO L226 Difference]: Without dead ends: 6562 [2019-11-07 00:45:58,320 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:45:58,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6562 states. [2019-11-07 00:45:58,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6562 to 6532. [2019-11-07 00:45:58,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6532 states. [2019-11-07 00:45:58,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6532 states to 6532 states and 8968 transitions. [2019-11-07 00:45:58,803 INFO L78 Accepts]: Start accepts. Automaton has 6532 states and 8968 transitions. Word has length 199 [2019-11-07 00:45:58,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:58,804 INFO L462 AbstractCegarLoop]: Abstraction has 6532 states and 8968 transitions. [2019-11-07 00:45:58,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:45:58,804 INFO L276 IsEmpty]: Start isEmpty. Operand 6532 states and 8968 transitions. [2019-11-07 00:45:58,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-11-07 00:45:58,820 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:58,821 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:58,821 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:58,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:58,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1972860762, now seen corresponding path program 1 times [2019-11-07 00:45:58,822 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:58,822 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107942192] [2019-11-07 00:45:58,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:58,991 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:45:58,991 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107942192] [2019-11-07 00:45:58,991 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:58,991 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:58,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826453762] [2019-11-07 00:45:58,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:58,993 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:58,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:58,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:58,993 INFO L87 Difference]: Start difference. First operand 6532 states and 8968 transitions. Second operand 6 states. [2019-11-07 00:45:59,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:59,736 INFO L93 Difference]: Finished difference Result 18148 states and 24739 transitions. [2019-11-07 00:45:59,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:45:59,737 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 200 [2019-11-07 00:45:59,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:59,851 INFO L225 Difference]: With dead ends: 18148 [2019-11-07 00:45:59,852 INFO L226 Difference]: Without dead ends: 13199 [2019-11-07 00:45:59,885 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:45:59,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13199 states. [2019-11-07 00:46:00,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13199 to 13036. [2019-11-07 00:46:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13036 states. [2019-11-07 00:46:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13036 states to 13036 states and 17919 transitions. [2019-11-07 00:46:00,700 INFO L78 Accepts]: Start accepts. Automaton has 13036 states and 17919 transitions. Word has length 200 [2019-11-07 00:46:00,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:00,702 INFO L462 AbstractCegarLoop]: Abstraction has 13036 states and 17919 transitions. [2019-11-07 00:46:00,702 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:46:00,702 INFO L276 IsEmpty]: Start isEmpty. Operand 13036 states and 17919 transitions. [2019-11-07 00:46:00,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-11-07 00:46:00,727 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:00,728 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:00,728 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:00,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:00,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1385655780, now seen corresponding path program 1 times [2019-11-07 00:46:00,729 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:00,729 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325031034] [2019-11-07 00:46:00,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:46:00,913 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325031034] [2019-11-07 00:46:00,913 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:00,914 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:46:00,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709884706] [2019-11-07 00:46:00,915 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:46:00,915 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:00,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:46:00,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:46:00,916 INFO L87 Difference]: Start difference. First operand 13036 states and 17919 transitions. Second operand 9 states. [2019-11-07 00:46:01,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:01,421 INFO L93 Difference]: Finished difference Result 24391 states and 33443 transitions. [2019-11-07 00:46:01,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:46:01,422 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 201 [2019-11-07 00:46:01,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:01,486 INFO L225 Difference]: With dead ends: 24391 [2019-11-07 00:46:01,486 INFO L226 Difference]: Without dead ends: 14456 [2019-11-07 00:46:01,527 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:46:01,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14456 states. [2019-11-07 00:46:02,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14456 to 14326. [2019-11-07 00:46:02,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14326 states. [2019-11-07 00:46:02,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14326 states to 14326 states and 19899 transitions. [2019-11-07 00:46:02,378 INFO L78 Accepts]: Start accepts. Automaton has 14326 states and 19899 transitions. Word has length 201 [2019-11-07 00:46:02,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:02,378 INFO L462 AbstractCegarLoop]: Abstraction has 14326 states and 19899 transitions. [2019-11-07 00:46:02,378 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:46:02,379 INFO L276 IsEmpty]: Start isEmpty. Operand 14326 states and 19899 transitions. [2019-11-07 00:46:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-11-07 00:46:02,407 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:02,408 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:02,408 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:02,409 INFO L82 PathProgramCache]: Analyzing trace with hash -221138788, now seen corresponding path program 1 times [2019-11-07 00:46:02,409 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:02,409 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656625791] [2019-11-07 00:46:02,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:02,608 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:46:02,608 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656625791] [2019-11-07 00:46:02,608 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:02,608 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:46:02,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788878879] [2019-11-07 00:46:02,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:46:02,609 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:02,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:46:02,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:46:02,610 INFO L87 Difference]: Start difference. First operand 14326 states and 19899 transitions. Second operand 6 states. [2019-11-07 00:46:04,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:04,391 INFO L93 Difference]: Finished difference Result 39463 states and 54578 transitions. [2019-11-07 00:46:04,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:46:04,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2019-11-07 00:46:04,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:04,491 INFO L225 Difference]: With dead ends: 39463 [2019-11-07 00:46:04,491 INFO L226 Difference]: Without dead ends: 25937 [2019-11-07 00:46:04,551 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:46:04,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25937 states. [2019-11-07 00:46:05,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25937 to 25642. [2019-11-07 00:46:05,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25642 states. [2019-11-07 00:46:05,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25642 states to 25642 states and 35837 transitions. [2019-11-07 00:46:05,780 INFO L78 Accepts]: Start accepts. Automaton has 25642 states and 35837 transitions. Word has length 202 [2019-11-07 00:46:05,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:05,781 INFO L462 AbstractCegarLoop]: Abstraction has 25642 states and 35837 transitions. [2019-11-07 00:46:05,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:46:05,781 INFO L276 IsEmpty]: Start isEmpty. Operand 25642 states and 35837 transitions. [2019-11-07 00:46:05,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-11-07 00:46:05,825 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:05,826 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:05,826 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:05,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:05,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1456951732, now seen corresponding path program 1 times [2019-11-07 00:46:05,827 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:05,827 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865066534] [2019-11-07 00:46:05,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:46:05,937 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865066534] [2019-11-07 00:46:05,937 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:05,937 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:46:05,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003376001] [2019-11-07 00:46:05,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:46:05,938 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:05,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:46:05,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:46:05,939 INFO L87 Difference]: Start difference. First operand 25642 states and 35837 transitions. Second operand 3 states. [2019-11-07 00:46:06,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:06,440 INFO L93 Difference]: Finished difference Result 53186 states and 75254 transitions. [2019-11-07 00:46:06,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:46:06,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2019-11-07 00:46:06,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:06,782 INFO L225 Difference]: With dead ends: 53186 [2019-11-07 00:46:06,782 INFO L226 Difference]: Without dead ends: 27607 [2019-11-07 00:46:06,828 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 00:46:06,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27607 states. [2019-11-07 00:46:07,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27607 to 27586. [2019-11-07 00:46:07,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27586 states. [2019-11-07 00:46:07,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27586 states to 27586 states and 39419 transitions. [2019-11-07 00:46:07,873 INFO L78 Accepts]: Start accepts. Automaton has 27586 states and 39419 transitions. Word has length 211 [2019-11-07 00:46:07,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:07,873 INFO L462 AbstractCegarLoop]: Abstraction has 27586 states and 39419 transitions. [2019-11-07 00:46:07,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:46:07,873 INFO L276 IsEmpty]: Start isEmpty. Operand 27586 states and 39419 transitions. [2019-11-07 00:46:07,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-11-07 00:46:07,960 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:07,961 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:07,961 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:07,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:07,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1766066792, now seen corresponding path program 1 times [2019-11-07 00:46:07,962 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:07,962 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707098287] [2019-11-07 00:46:07,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:46:09,084 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707098287] [2019-11-07 00:46:09,084 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:09,084 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:46:09,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969673244] [2019-11-07 00:46:09,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:46:09,085 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:09,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:46:09,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:46:09,086 INFO L87 Difference]: Start difference. First operand 27586 states and 39419 transitions. Second operand 3 states. [2019-11-07 00:46:09,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:09,621 INFO L93 Difference]: Finished difference Result 58778 states and 85616 transitions. [2019-11-07 00:46:09,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:46:09,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 212 [2019-11-07 00:46:09,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:09,731 INFO L225 Difference]: With dead ends: 58778 [2019-11-07 00:46:09,731 INFO L226 Difference]: Without dead ends: 31255 [2019-11-07 00:46:09,794 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 00:46:09,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31255 states. [2019-11-07 00:46:10,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31255 to 31234. [2019-11-07 00:46:10,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31234 states. [2019-11-07 00:46:10,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31234 states to 31234 states and 46151 transitions. [2019-11-07 00:46:10,979 INFO L78 Accepts]: Start accepts. Automaton has 31234 states and 46151 transitions. Word has length 212 [2019-11-07 00:46:10,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:10,980 INFO L462 AbstractCegarLoop]: Abstraction has 31234 states and 46151 transitions. [2019-11-07 00:46:10,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:46:10,980 INFO L276 IsEmpty]: Start isEmpty. Operand 31234 states and 46151 transitions. [2019-11-07 00:46:11,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-11-07 00:46:11,046 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:11,046 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:11,047 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:11,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:11,047 INFO L82 PathProgramCache]: Analyzing trace with hash -569401298, now seen corresponding path program 1 times [2019-11-07 00:46:11,047 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:11,048 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101360905] [2019-11-07 00:46:11,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:46:11,179 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101360905] [2019-11-07 00:46:11,180 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:11,180 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:46:11,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145399064] [2019-11-07 00:46:11,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:46:11,181 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:11,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:46:11,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:46:11,181 INFO L87 Difference]: Start difference. First operand 31234 states and 46151 transitions. Second operand 3 states. [2019-11-07 00:46:12,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:12,145 INFO L93 Difference]: Finished difference Result 69434 states and 105140 transitions. [2019-11-07 00:46:12,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:46:12,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2019-11-07 00:46:12,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:12,267 INFO L225 Difference]: With dead ends: 69434 [2019-11-07 00:46:12,267 INFO L226 Difference]: Without dead ends: 38263 [2019-11-07 00:46:12,342 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 00:46:12,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38263 states.