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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/email_spec8_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:12:43,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:12:43,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:12:43,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:12:43,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:12:43,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:12:43,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:12:43,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:12:43,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:12:43,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:12:43,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:12:43,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:12:43,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:12:43,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:12:43,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:12:43,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:12:43,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:12:43,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:12:43,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:12:43,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:12:43,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:12:43,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:12:43,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:12:43,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:12:43,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:12:43,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:12:43,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:12:43,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:12:43,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:12:43,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:12:43,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:12:43,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:12:43,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:12:43,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:12:43,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:12:43,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:12:43,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:12:43,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:12:43,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:12:43,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:12:43,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:12:43,199 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:12:43,221 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:12:43,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:12:43,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:12:43,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:12:43,224 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:12:43,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:12:43,224 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:12:43,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:12:43,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:12:43,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:12:43,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:12:43,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:12:43,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:12:43,227 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:12:43,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:12:43,227 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:12:43,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:12:43,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:12:43,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:12:43,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:12:43,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:12:43,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:12:43,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:12:43,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:12:43,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:12:43,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:12:43,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:12:43,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:12:43,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:12:43,526 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:12:43,539 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:12:43,543 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:12:43,544 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:12:43,545 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:12:43,545 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product26.cil.c [2019-10-13 23:12:43,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f1b69d11/84f2206832f0486e894610eb2b5830f6/FLAG4f24193ec [2019-10-13 23:12:44,264 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:12:44,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product26.cil.c [2019-10-13 23:12:44,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f1b69d11/84f2206832f0486e894610eb2b5830f6/FLAG4f24193ec [2019-10-13 23:12:44,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f1b69d11/84f2206832f0486e894610eb2b5830f6 [2019-10-13 23:12:44,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:12:44,457 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:12:44,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:12:44,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:12:44,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:12:44,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:12:44" (1/1) ... [2019-10-13 23:12:44,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29914bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:44, skipping insertion in model container [2019-10-13 23:12:44,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:12:44" (1/1) ... [2019-10-13 23:12:44,476 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:12:44,557 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:12:45,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:12:45,304 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:12:45,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:12:45,553 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:12:45,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:45 WrapperNode [2019-10-13 23:12:45,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:12:45,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:12:45,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:12:45,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:12:45,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:45" (1/1) ... [2019-10-13 23:12:45,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:45" (1/1) ... [2019-10-13 23:12:45,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:45" (1/1) ... [2019-10-13 23:12:45,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:45" (1/1) ... [2019-10-13 23:12:45,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:45" (1/1) ... [2019-10-13 23:12:45,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:45" (1/1) ... [2019-10-13 23:12:45,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:45" (1/1) ... [2019-10-13 23:12:45,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:12:45,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:12:45,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:12:45,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:12:45,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:12:45,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:12:45,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:12:45,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:12:45,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 23:12:45,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 23:12:45,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 23:12:45,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 23:12:45,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 23:12:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 23:12:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 23:12:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 23:12:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:12:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:12:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 23:12:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 23:12:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 23:12:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 23:12:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 23:12:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 23:12:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 23:12:45,836 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 23:12:45,836 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 23:12:45,837 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 23:12:45,838 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 23:12:45,838 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 23:12:45,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 23:12:45,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 23:12:45,838 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 23:12:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 23:12:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 23:12:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 23:12:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 23:12:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 23:12:45,840 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-13 23:12:45,840 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 23:12:45,840 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 23:12:45,841 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 23:12:45,841 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 23:12:45,841 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 23:12:45,841 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 23:12:45,841 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 23:12:45,842 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 23:12:45,842 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 23:12:45,842 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 23:12:45,842 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 23:12:45,842 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 23:12:45,842 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 23:12:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:12:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:12:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:12:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:12:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:12:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:12:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:12:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:12:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:12:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:12:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:12:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:12:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 23:12:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 23:12:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 23:12:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 23:12:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 23:12:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 23:12:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 23:12:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 23:12:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 23:12:45,847 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 23:12:45,847 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 23:12:45,847 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 23:12:45,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 23:12:45,848 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 23:12:45,849 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 23:12:45,849 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 23:12:45,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 23:12:45,850 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 23:12:45,850 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 23:12:45,850 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 23:12:45,850 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 23:12:45,852 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 23:12:45,852 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 23:12:45,852 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 23:12:45,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 23:12:45,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 23:12:45,853 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 23:12:45,853 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 23:12:45,854 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 23:12:45,854 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 23:12:45,854 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 23:12:45,854 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 23:12:45,854 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 23:12:45,855 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 23:12:45,855 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 23:12:45,855 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 23:12:45,855 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 23:12:45,855 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 23:12:45,855 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 23:12:45,856 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 23:12:45,856 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 23:12:45,856 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 23:12:45,856 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 23:12:45,856 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 23:12:45,856 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 23:12:45,856 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 23:12:45,857 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 23:12:45,857 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 23:12:45,857 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 23:12:45,857 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 23:12:45,857 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 23:12:45,857 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 23:12:45,858 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 23:12:45,858 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 23:12:45,858 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 23:12:45,858 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 23:12:45,858 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 23:12:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:12:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:12:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:12:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 23:12:45,860 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 23:12:45,860 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 23:12:45,860 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 23:12:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 23:12:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 23:12:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 23:12:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 23:12:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 23:12:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 23:12:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 23:12:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 23:12:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 23:12:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:12:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:12:45,868 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:12:45,868 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 23:12:45,868 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 23:12:45,868 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 23:12:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 23:12:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 23:12:45,870 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 23:12:45,870 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 23:12:45,870 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 23:12:45,870 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 23:12:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 23:12:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 23:12:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:12:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:12:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:12:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 23:12:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 23:12:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 23:12:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 23:12:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 23:12:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 23:12:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 23:12:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 23:12:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 23:12:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 23:12:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 23:12:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 23:12:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 23:12:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 23:12:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 23:12:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:12:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:12:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 23:12:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 23:12:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 23:12:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 23:12:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 23:12:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 23:12:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 23:12:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 23:12:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 23:12:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 23:12:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 23:12:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 23:12:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 23:12:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 23:12:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 23:12:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 23:12:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 23:12:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 23:12:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 23:12:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 23:12:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 23:12:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 23:12:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 23:12:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 23:12:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 23:12:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 23:12:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 23:12:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 23:12:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 23:12:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 23:12:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 23:12:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 23:12:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-13 23:12:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 23:12:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:12:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:12:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:12:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:12:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:12:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:12:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:12:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:12:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:12:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:12:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:12:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:12:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:12:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:12:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:12:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:12:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:12:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 23:12:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 23:12:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 23:12:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 23:12:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 23:12:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 23:12:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 23:12:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 23:12:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 23:12:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 23:12:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 23:12:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 23:12:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 23:12:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 23:12:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 23:12:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 23:12:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 23:12:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 23:12:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 23:12:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 23:12:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 23:12:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 23:12:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 23:12:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 23:12:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 23:12:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 23:12:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 23:12:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:12:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:12:45,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:12:50,828 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:12:50,828 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 23:12:50,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:12:50 BoogieIcfgContainer [2019-10-13 23:12:50,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:12:50,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:12:50,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:12:50,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:12:50,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:12:44" (1/3) ... [2019-10-13 23:12:50,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f877600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:12:50, skipping insertion in model container [2019-10-13 23:12:50,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:45" (2/3) ... [2019-10-13 23:12:50,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f877600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:12:50, skipping insertion in model container [2019-10-13 23:12:50,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:12:50" (3/3) ... [2019-10-13 23:12:50,840 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product26.cil.c [2019-10-13 23:12:50,852 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:12:50,869 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:12:50,884 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:12:50,914 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:12:50,914 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:12:50,914 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:12:50,914 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:12:50,914 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:12:50,915 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:12:50,915 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:12:50,915 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:12:50,945 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states. [2019-10-13 23:12:50,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:12:50,963 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:12:50,964 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 23:12:50,966 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:12:50,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:12:50,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1580393884, now seen corresponding path program 1 times [2019-10-13 23:12:50,983 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:12:50,983 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243855408] [2019-10-13 23:12:50,984 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:12:50,984 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:12:50,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:12:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:12:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:12:51,552 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243855408] [2019-10-13 23:12:51,553 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:12:51,553 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:12:51,554 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049391558] [2019-10-13 23:12:51,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:12:51,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:12:51,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:12:51,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:12:51,574 INFO L87 Difference]: Start difference. First operand 420 states. Second operand 2 states. [2019-10-13 23:12:51,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:12:51,655 INFO L93 Difference]: Finished difference Result 615 states and 732 transitions. [2019-10-13 23:12:51,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:12:51,657 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 121 [2019-10-13 23:12:51,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:12:51,688 INFO L225 Difference]: With dead ends: 615 [2019-10-13 23:12:51,688 INFO L226 Difference]: Without dead ends: 393 [2019-10-13 23:12:51,695 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:12:51,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2019-10-13 23:12:51,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2019-10-13 23:12:51,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2019-10-13 23:12:51,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 464 transitions. [2019-10-13 23:12:51,807 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 464 transitions. Word has length 121 [2019-10-13 23:12:51,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:12:51,811 INFO L462 AbstractCegarLoop]: Abstraction has 393 states and 464 transitions. [2019-10-13 23:12:51,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:12:51,811 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 464 transitions. [2019-10-13 23:12:51,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 23:12:51,817 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:12:51,817 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 23:12:51,818 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:12:51,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:12:51,818 INFO L82 PathProgramCache]: Analyzing trace with hash -251512447, now seen corresponding path program 1 times [2019-10-13 23:12:51,818 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:12:51,819 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094329977] [2019-10-13 23:12:51,819 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:12:51,819 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:12:51,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:12:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:12:52,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:12:52,098 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094329977] [2019-10-13 23:12:52,098 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:12:52,098 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:12:52,098 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889099583] [2019-10-13 23:12:52,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:12:52,101 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:12:52,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:12:52,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:12:52,102 INFO L87 Difference]: Start difference. First operand 393 states and 464 transitions. Second operand 3 states. [2019-10-13 23:12:52,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:12:52,155 INFO L93 Difference]: Finished difference Result 600 states and 701 transitions. [2019-10-13 23:12:52,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:12:52,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2019-10-13 23:12:52,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:12:52,160 INFO L225 Difference]: With dead ends: 600 [2019-10-13 23:12:52,160 INFO L226 Difference]: Without dead ends: 395 [2019-10-13 23:12:52,164 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:12:52,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2019-10-13 23:12:52,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2019-10-13 23:12:52,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2019-10-13 23:12:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 466 transitions. [2019-10-13 23:12:52,209 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 466 transitions. Word has length 122 [2019-10-13 23:12:52,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:12:52,210 INFO L462 AbstractCegarLoop]: Abstraction has 395 states and 466 transitions. [2019-10-13 23:12:52,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:12:52,210 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 466 transitions. [2019-10-13 23:12:52,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-13 23:12:52,214 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:12:52,214 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 23:12:52,214 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:12:52,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:12:52,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1716239454, now seen corresponding path program 1 times [2019-10-13 23:12:52,215 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:12:52,215 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725773528] [2019-10-13 23:12:52,216 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:12:52,216 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:12:52,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:12:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:12:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:12:52,460 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725773528] [2019-10-13 23:12:52,460 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:12:52,461 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:12:52,461 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720791429] [2019-10-13 23:12:52,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:12:52,462 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:12:52,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:12:52,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:12:52,462 INFO L87 Difference]: Start difference. First operand 395 states and 466 transitions. Second operand 3 states. [2019-10-13 23:12:52,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:12:52,499 INFO L93 Difference]: Finished difference Result 776 states and 945 transitions. [2019-10-13 23:12:52,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:12:52,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2019-10-13 23:12:52,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:12:52,504 INFO L225 Difference]: With dead ends: 776 [2019-10-13 23:12:52,504 INFO L226 Difference]: Without dead ends: 439 [2019-10-13 23:12:52,506 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:12:52,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2019-10-13 23:12:52,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 438. [2019-10-13 23:12:52,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2019-10-13 23:12:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 540 transitions. [2019-10-13 23:12:52,533 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 540 transitions. Word has length 134 [2019-10-13 23:12:52,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:12:52,534 INFO L462 AbstractCegarLoop]: Abstraction has 438 states and 540 transitions. [2019-10-13 23:12:52,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:12:52,534 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 540 transitions. [2019-10-13 23:12:52,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 23:12:52,537 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:12:52,538 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 23:12:52,538 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:12:52,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:12:52,538 INFO L82 PathProgramCache]: Analyzing trace with hash 320807788, now seen corresponding path program 1 times [2019-10-13 23:12:52,539 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:12:52,539 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138297491] [2019-10-13 23:12:52,539 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:12:52,539 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:12:52,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:12:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:12:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:12:52,823 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138297491] [2019-10-13 23:12:52,823 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:12:52,823 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:12:52,824 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732499438] [2019-10-13 23:12:52,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:12:52,825 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:12:52,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:12:52,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:12:52,826 INFO L87 Difference]: Start difference. First operand 438 states and 540 transitions. Second operand 3 states. [2019-10-13 23:12:52,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:12:52,869 INFO L93 Difference]: Finished difference Result 695 states and 841 transitions. [2019-10-13 23:12:52,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:12:52,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2019-10-13 23:12:52,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:12:52,882 INFO L225 Difference]: With dead ends: 695 [2019-10-13 23:12:52,883 INFO L226 Difference]: Without dead ends: 502 [2019-10-13 23:12:52,884 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:12:52,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2019-10-13 23:12:52,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 501. [2019-10-13 23:12:52,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2019-10-13 23:12:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 613 transitions. [2019-10-13 23:12:52,938 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 613 transitions. Word has length 135 [2019-10-13 23:12:52,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:12:52,939 INFO L462 AbstractCegarLoop]: Abstraction has 501 states and 613 transitions. [2019-10-13 23:12:52,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:12:52,939 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 613 transitions. [2019-10-13 23:12:52,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-13 23:12:52,944 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:12:52,944 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:12:52,945 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:12:52,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:12:52,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1366449552, now seen corresponding path program 1 times [2019-10-13 23:12:52,945 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:12:52,945 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692183821] [2019-10-13 23:12:52,946 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:12:52,946 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:12:52,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:12:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:12:53,438 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:12:53,439 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692183821] [2019-10-13 23:12:53,439 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:12:53,439 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:12:53,439 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236929304] [2019-10-13 23:12:53,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:12:53,440 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:12:53,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:12:53,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:12:53,441 INFO L87 Difference]: Start difference. First operand 501 states and 613 transitions. Second operand 12 states. [2019-10-13 23:12:56,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:12:56,142 INFO L93 Difference]: Finished difference Result 1173 states and 1424 transitions. [2019-10-13 23:12:56,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:12:56,143 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 236 [2019-10-13 23:12:56,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:12:56,152 INFO L225 Difference]: With dead ends: 1173 [2019-10-13 23:12:56,152 INFO L226 Difference]: Without dead ends: 922 [2019-10-13 23:12:56,155 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2019-10-13 23:12:56,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2019-10-13 23:12:56,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 913. [2019-10-13 23:12:56,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2019-10-13 23:12:56,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1126 transitions. [2019-10-13 23:12:56,224 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1126 transitions. Word has length 236 [2019-10-13 23:12:56,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:12:56,225 INFO L462 AbstractCegarLoop]: Abstraction has 913 states and 1126 transitions. [2019-10-13 23:12:56,225 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:12:56,226 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1126 transitions. [2019-10-13 23:12:56,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2019-10-13 23:12:56,233 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:12:56,233 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:12:56,234 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:12:56,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:12:56,234 INFO L82 PathProgramCache]: Analyzing trace with hash 847477515, now seen corresponding path program 1 times [2019-10-13 23:12:56,235 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:12:56,235 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128931051] [2019-10-13 23:12:56,235 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:12:56,235 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:12:56,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:12:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:12:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:12:56,437 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128931051] [2019-10-13 23:12:56,437 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:12:56,437 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:12:56,438 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098065236] [2019-10-13 23:12:56,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:12:56,439 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:12:56,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:12:56,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:12:56,439 INFO L87 Difference]: Start difference. First operand 913 states and 1126 transitions. Second operand 3 states. [2019-10-13 23:12:56,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:12:56,496 INFO L93 Difference]: Finished difference Result 1932 states and 2473 transitions. [2019-10-13 23:12:56,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:12:56,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2019-10-13 23:12:56,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:12:56,504 INFO L225 Difference]: With dead ends: 1932 [2019-10-13 23:12:56,505 INFO L226 Difference]: Without dead ends: 1077 [2019-10-13 23:12:56,508 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:12:56,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2019-10-13 23:12:56,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1075. [2019-10-13 23:12:56,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1075 states. [2019-10-13 23:12:56,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1404 transitions. [2019-10-13 23:12:56,583 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1404 transitions. Word has length 251 [2019-10-13 23:12:56,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:12:56,583 INFO L462 AbstractCegarLoop]: Abstraction has 1075 states and 1404 transitions. [2019-10-13 23:12:56,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:12:56,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1404 transitions. [2019-10-13 23:12:56,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2019-10-13 23:12:56,591 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:12:56,592 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:12:56,592 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:12:56,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:12:56,593 INFO L82 PathProgramCache]: Analyzing trace with hash -186717215, now seen corresponding path program 1 times [2019-10-13 23:12:56,593 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:12:56,593 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069058809] [2019-10-13 23:12:56,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:12:56,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:12:56,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:12:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:12:56,924 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:12:56,925 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069058809] [2019-10-13 23:12:56,925 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:12:56,925 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:12:56,925 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872210537] [2019-10-13 23:12:56,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:12:56,926 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:12:56,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:12:56,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:12:56,927 INFO L87 Difference]: Start difference. First operand 1075 states and 1404 transitions. Second operand 3 states. [2019-10-13 23:12:56,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:12:56,997 INFO L93 Difference]: Finished difference Result 2406 states and 3287 transitions. [2019-10-13 23:12:56,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:12:56,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 252 [2019-10-13 23:12:56,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:12:57,007 INFO L225 Difference]: With dead ends: 2406 [2019-10-13 23:12:57,007 INFO L226 Difference]: Without dead ends: 1389 [2019-10-13 23:12:57,011 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:12:57,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2019-10-13 23:12:57,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1387. [2019-10-13 23:12:57,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1387 states. [2019-10-13 23:12:57,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1936 transitions. [2019-10-13 23:12:57,099 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1936 transitions. Word has length 252 [2019-10-13 23:12:57,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:12:57,102 INFO L462 AbstractCegarLoop]: Abstraction has 1387 states and 1936 transitions. [2019-10-13 23:12:57,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:12:57,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1936 transitions. [2019-10-13 23:12:57,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2019-10-13 23:12:57,111 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:12:57,112 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:12:57,112 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:12:57,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:12:57,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1331981461, now seen corresponding path program 1 times [2019-10-13 23:12:57,113 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:12:57,113 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020481256] [2019-10-13 23:12:57,113 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:12:57,113 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:12:57,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:12:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:12:57,325 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:12:57,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020481256] [2019-10-13 23:12:57,325 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:12:57,326 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:12:57,326 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438519537] [2019-10-13 23:12:57,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:12:57,327 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:12:57,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:12:57,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:12:57,327 INFO L87 Difference]: Start difference. First operand 1387 states and 1936 transitions. Second operand 3 states. [2019-10-13 23:12:57,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:12:57,435 INFO L93 Difference]: Finished difference Result 3318 states and 4843 transitions. [2019-10-13 23:12:57,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:12:57,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 253 [2019-10-13 23:12:57,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:12:57,449 INFO L225 Difference]: With dead ends: 3318 [2019-10-13 23:12:57,449 INFO L226 Difference]: Without dead ends: 1989 [2019-10-13 23:12:57,458 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:12:57,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2019-10-13 23:12:57,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1987. [2019-10-13 23:12:57,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1987 states. [2019-10-13 23:12:57,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2952 transitions. [2019-10-13 23:12:57,620 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2952 transitions. Word has length 253 [2019-10-13 23:12:57,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:12:57,621 INFO L462 AbstractCegarLoop]: Abstraction has 1987 states and 2952 transitions. [2019-10-13 23:12:57,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:12:57,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2952 transitions. [2019-10-13 23:12:57,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-10-13 23:12:57,633 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:12:57,633 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 23:12:57,633 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:12:57,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:12:57,634 INFO L82 PathProgramCache]: Analyzing trace with hash -684531340, now seen corresponding path program 1 times [2019-10-13 23:12:57,634 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:12:57,634 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287196982] [2019-10-13 23:12:57,635 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:12:57,635 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:12:57,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:12:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:12:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 23:12:57,947 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287196982] [2019-10-13 23:12:57,948 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:12:57,948 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 23:12:57,948 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106255859] [2019-10-13 23:12:57,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 23:12:57,949 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:12:57,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 23:12:57,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:12:57,950 INFO L87 Difference]: Start difference. First operand 1987 states and 2952 transitions. Second operand 11 states. [2019-10-13 23:13:01,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:01,495 INFO L93 Difference]: Finished difference Result 2732 states and 3822 transitions. [2019-10-13 23:13:01,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:13:01,495 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 238 [2019-10-13 23:13:01,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:01,513 INFO L225 Difference]: With dead ends: 2732 [2019-10-13 23:13:01,513 INFO L226 Difference]: Without dead ends: 2307 [2019-10-13 23:13:01,517 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:13:01,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2019-10-13 23:13:01,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2290. [2019-10-13 23:13:01,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2290 states. [2019-10-13 23:13:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 3309 transitions. [2019-10-13 23:13:01,677 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 3309 transitions. Word has length 238 [2019-10-13 23:13:01,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:01,678 INFO L462 AbstractCegarLoop]: Abstraction has 2290 states and 3309 transitions. [2019-10-13 23:13:01,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 23:13:01,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 3309 transitions. [2019-10-13 23:13:01,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2019-10-13 23:13:01,693 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:01,693 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:01,694 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:01,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:01,694 INFO L82 PathProgramCache]: Analyzing trace with hash 600025985, now seen corresponding path program 1 times [2019-10-13 23:13:01,694 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:01,694 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319980259] [2019-10-13 23:13:01,695 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:01,695 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:01,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:01,915 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319980259] [2019-10-13 23:13:01,916 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:01,916 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:01,916 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294116902] [2019-10-13 23:13:01,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:01,917 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:01,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:01,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:01,918 INFO L87 Difference]: Start difference. First operand 2290 states and 3309 transitions. Second operand 3 states. [2019-10-13 23:13:02,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:02,062 INFO L93 Difference]: Finished difference Result 5676 states and 8525 transitions. [2019-10-13 23:13:02,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:02,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 254 [2019-10-13 23:13:02,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:02,086 INFO L225 Difference]: With dead ends: 5676 [2019-10-13 23:13:02,087 INFO L226 Difference]: Without dead ends: 3444 [2019-10-13 23:13:02,095 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:02,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2019-10-13 23:13:02,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 3442. [2019-10-13 23:13:02,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3442 states. [2019-10-13 23:13:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3442 states to 3442 states and 5245 transitions. [2019-10-13 23:13:02,307 INFO L78 Accepts]: Start accepts. Automaton has 3442 states and 5245 transitions. Word has length 254 [2019-10-13 23:13:02,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:02,308 INFO L462 AbstractCegarLoop]: Abstraction has 3442 states and 5245 transitions. [2019-10-13 23:13:02,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:02,308 INFO L276 IsEmpty]: Start isEmpty. Operand 3442 states and 5245 transitions. [2019-10-13 23:13:02,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2019-10-13 23:13:02,333 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:02,334 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:02,334 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:02,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:02,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1477739573, now seen corresponding path program 1 times [2019-10-13 23:13:02,335 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:02,336 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063981862] [2019-10-13 23:13:02,336 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:02,336 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:02,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:02,521 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063981862] [2019-10-13 23:13:02,521 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:02,521 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:02,522 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096324467] [2019-10-13 23:13:02,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:02,522 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:02,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:02,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:02,523 INFO L87 Difference]: Start difference. First operand 3442 states and 5245 transitions. Second operand 3 states. [2019-10-13 23:13:02,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:02,757 INFO L93 Difference]: Finished difference Result 9036 states and 14173 transitions. [2019-10-13 23:13:02,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:02,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 255 [2019-10-13 23:13:02,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:02,803 INFO L225 Difference]: With dead ends: 9036 [2019-10-13 23:13:02,804 INFO L226 Difference]: Without dead ends: 5652 [2019-10-13 23:13:02,822 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:02,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2019-10-13 23:13:03,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 5650. [2019-10-13 23:13:03,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5650 states. [2019-10-13 23:13:03,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5650 states to 5650 states and 8925 transitions. [2019-10-13 23:13:03,271 INFO L78 Accepts]: Start accepts. Automaton has 5650 states and 8925 transitions. Word has length 255 [2019-10-13 23:13:03,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:03,272 INFO L462 AbstractCegarLoop]: Abstraction has 5650 states and 8925 transitions. [2019-10-13 23:13:03,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:03,272 INFO L276 IsEmpty]: Start isEmpty. Operand 5650 states and 8925 transitions. [2019-10-13 23:13:03,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-10-13 23:13:03,304 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:03,304 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:03,305 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:03,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:03,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1938973919, now seen corresponding path program 1 times [2019-10-13 23:13:03,305 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:03,305 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718908599] [2019-10-13 23:13:03,306 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:03,306 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:03,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:03,514 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718908599] [2019-10-13 23:13:03,514 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:03,514 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:03,515 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363370758] [2019-10-13 23:13:03,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:03,516 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:03,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:03,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:03,516 INFO L87 Difference]: Start difference. First operand 5650 states and 8925 transitions. Second operand 3 states. [2019-10-13 23:13:03,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:03,952 INFO L93 Difference]: Finished difference Result 15468 states and 24893 transitions. [2019-10-13 23:13:03,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:03,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 256 [2019-10-13 23:13:03,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:04,043 INFO L225 Difference]: With dead ends: 15468 [2019-10-13 23:13:04,044 INFO L226 Difference]: Without dead ends: 9876 [2019-10-13 23:13:04,066 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:04,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9876 states. [2019-10-13 23:13:04,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9876 to 9874. [2019-10-13 23:13:04,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9874 states. [2019-10-13 23:13:04,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9874 states to 9874 states and 15901 transitions. [2019-10-13 23:13:04,813 INFO L78 Accepts]: Start accepts. Automaton has 9874 states and 15901 transitions. Word has length 256 [2019-10-13 23:13:04,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:04,814 INFO L462 AbstractCegarLoop]: Abstraction has 9874 states and 15901 transitions. [2019-10-13 23:13:04,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:04,814 INFO L276 IsEmpty]: Start isEmpty. Operand 9874 states and 15901 transitions. [2019-10-13 23:13:04,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2019-10-13 23:13:04,897 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:04,898 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:04,898 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:04,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:04,899 INFO L82 PathProgramCache]: Analyzing trace with hash 96023595, now seen corresponding path program 1 times [2019-10-13 23:13:04,899 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:04,899 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463190167] [2019-10-13 23:13:04,899 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:04,899 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:04,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:05,575 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-13 23:13:05,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463190167] [2019-10-13 23:13:05,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808143043] [2019-10-13 23:13:05,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:13:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:06,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 3533 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:13:06,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:13:06,573 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 23:13:06,573 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:13:07,048 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:07,049 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [252677081] [2019-10-13 23:13:07,091 INFO L162 IcfgInterpreter]: Started Sifa with 208 locations of interest [2019-10-13 23:13:07,092 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:13:07,102 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:13:07,110 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:13:07,110 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs