/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --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_spec6_product12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:22:36,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:22:36,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:22:36,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:22:36,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:22:36,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:22:36,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:22:36,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:22:36,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:22:36,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:22:36,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:22:36,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:22:36,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:22:36,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:22:36,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:22:36,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:22:36,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:22:36,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:22:36,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:22:36,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:22:36,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:22:36,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:22:36,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:22:36,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:22:36,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:22:36,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:22:36,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:22:36,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:22:36,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:22:36,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:22:36,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:22:36,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:22:36,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:22:36,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:22:36,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:22:36,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:22:36,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:22:36,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:22:36,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:22:36,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:22:36,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:22:36,391 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:22:36,418 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:22:36,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:22:36,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:22:36,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:22:36,421 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:22:36,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:22:36,421 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:22:36,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:22:36,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:22:36,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:22:36,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:22:36,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:22:36,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:22:36,424 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:22:36,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:22:36,424 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:22:36,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:22:36,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:22:36,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:22:36,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:22:36,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:22:36,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:22:36,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:22:36,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:22:36,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:22:36,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:22:36,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:22:36,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:22:36,427 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 [2019-11-07 04:22:36,789 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:22:36,803 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:22:36,807 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:22:36,808 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:22:36,809 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:22:36,809 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product12.cil.c [2019-11-07 04:22:36,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14eb57b98/8036d90d310449ff8945108a390f553a/FLAG49b57b150 [2019-11-07 04:22:37,498 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:22:37,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product12.cil.c [2019-11-07 04:22:37,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14eb57b98/8036d90d310449ff8945108a390f553a/FLAG49b57b150 [2019-11-07 04:22:37,706 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14eb57b98/8036d90d310449ff8945108a390f553a [2019-11-07 04:22:37,719 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:22:37,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:22:37,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:22:37,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:22:37,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:22:37,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:22:37" (1/1) ... [2019-11-07 04:22:37,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68075150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:37, skipping insertion in model container [2019-11-07 04:22:37,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:22:37" (1/1) ... [2019-11-07 04:22:37,780 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:22:37,912 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:22:38,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:22:38,634 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:22:38,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:22:38,844 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:22:38,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:38 WrapperNode [2019-11-07 04:22:38,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:22:38,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:22:38,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:22:38,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:22:38,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:38" (1/1) ... [2019-11-07 04:22:38,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:38" (1/1) ... [2019-11-07 04:22:38,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:38" (1/1) ... [2019-11-07 04:22:38,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:38" (1/1) ... [2019-11-07 04:22:38,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:38" (1/1) ... [2019-11-07 04:22:38,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:38" (1/1) ... [2019-11-07 04:22:38,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:38" (1/1) ... [2019-11-07 04:22:39,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:22:39,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:22:39,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:22:39,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:22:39,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:22:39,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:22:39,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:22:39,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:22:39,137 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:22:39,137 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:22:39,139 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:22:39,139 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:22:39,140 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 04:22:39,140 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 04:22:39,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 04:22:39,141 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 04:22:39,142 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 04:22:39,143 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 04:22:39,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:22:39,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:22:39,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:22:39,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:22:39,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:22:39,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:22:39,148 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 04:22:39,149 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 04:22:39,149 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 04:22:39,149 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 04:22:39,149 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 04:22:39,150 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 04:22:39,150 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 04:22:39,150 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 04:22:39,151 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:22:39,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:22:39,153 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 04:22:39,153 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 04:22:39,153 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 04:22:39,154 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 04:22:39,154 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 04:22:39,155 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 04:22:39,155 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 04:22:39,155 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 04:22:39,156 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 04:22:39,156 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 04:22:39,156 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 04:22:39,156 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 04:22:39,157 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 04:22:39,157 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 04:22:39,158 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 04:22:39,158 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 04:22:39,159 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 04:22:39,159 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 04:22:39,159 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 04:22:39,159 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 04:22:39,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 04:22:39,160 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 04:22:39,161 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 04:22:39,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 04:22:39,161 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 04:22:39,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 04:22:39,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 04:22:39,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 04:22:39,163 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 04:22:39,163 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 04:22:39,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 04:22:39,164 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 04:22:39,164 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 04:22:39,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 04:22:39,165 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 04:22:39,166 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 04:22:39,166 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 04:22:39,166 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 04:22:39,166 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 04:22:39,167 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 04:22:39,167 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 04:22:39,167 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 04:22:39,168 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 04:22:39,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 04:22:39,169 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 04:22:39,169 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 04:22:39,170 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 04:22:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 04:22:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 04:22:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 04:22:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 04:22:39,172 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 04:22:39,173 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 04:22:39,173 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 04:22:39,173 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 04:22:39,173 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 04:22:39,173 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 04:22:39,174 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 04:22:39,175 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 04:22:39,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:22:39,175 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 04:22:39,175 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 04:22:39,175 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 04:22:39,176 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 04:22:39,176 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 04:22:39,176 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 04:22:39,176 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 04:22:39,176 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 04:22:39,176 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 04:22:39,177 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 04:22:39,177 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 04:22:39,177 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 04:22:39,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 04:22:39,177 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 04:22:39,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-11-07 04:22:39,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-11-07 04:22:39,178 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 04:22:39,178 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:22:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:22:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:22:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:22:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:22:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:22:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:22:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:22:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 04:22:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 04:22:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 04:22:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 04:22:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 04:22:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 04:22:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 04:22:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 04:22:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 04:22:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 04:22:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 04:22:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 04:22:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:22:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 04:22:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:22:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:22:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:22:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:22:39,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:22:39,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:22:39,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:22:39,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:22:39,190 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:22:39,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:22:39,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:22:39,191 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:22:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:22:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:22:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:22:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:22:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 04:22:39,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 04:22:39,203 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 04:22:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 04:22:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 04:22:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 04:22:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 04:22:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 04:22:39,205 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 04:22:39,205 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 04:22:39,205 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 04:22:39,205 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 04:22:39,205 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 04:22:39,206 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 04:22:39,206 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 04:22:39,206 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 04:22:39,226 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 04:22:39,227 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 04:22:39,227 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 04:22:39,227 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:22:39,227 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:22:39,228 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:22:39,228 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 04:22:39,228 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 04:22:39,228 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 04:22:39,228 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 04:22:39,228 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 04:22:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 04:22:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 04:22:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 04:22:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 04:22:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 04:22:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 04:22:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 04:22:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 04:22:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 04:22:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 04:22:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 04:22:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 04:22:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 04:22:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 04:22:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 04:22:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 04:22:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 04:22:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 04:22:39,232 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 04:22:39,232 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 04:22:39,232 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 04:22:39,232 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 04:22:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 04:22:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 04:22:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 04:22:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 04:22:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 04:22:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 04:22:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 04:22:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 04:22:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 04:22:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 04:22:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 04:22:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 04:22:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 04:22:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 04:22:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 04:22:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 04:22:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 04:22:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 04:22:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 04:22:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 04:22:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 04:22:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:22:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 04:22:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 04:22:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 04:22:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 04:22:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 04:22:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 04:22:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-11-07 04:22:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 04:22:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 04:22:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-11-07 04:22:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 04:22:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:22:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:22:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:22:44,412 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:22:44,413 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 04:22:44,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:22:44 BoogieIcfgContainer [2019-11-07 04:22:44,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:22:44,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:22:44,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:22:44,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:22:44,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:22:37" (1/3) ... [2019-11-07 04:22:44,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b8dac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:22:44, skipping insertion in model container [2019-11-07 04:22:44,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:22:38" (2/3) ... [2019-11-07 04:22:44,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b8dac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:22:44, skipping insertion in model container [2019-11-07 04:22:44,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:22:44" (3/3) ... [2019-11-07 04:22:44,426 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec6_product12.cil.c [2019-11-07 04:22:44,436 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:22:44,450 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:22:44,461 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:22:44,490 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:22:44,491 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:22:44,491 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:22:44,491 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:22:44,491 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:22:44,491 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:22:44,491 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:22:44,492 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:22:44,520 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states. [2019-11-07 04:22:44,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-07 04:22:44,537 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:44,539 INFO L410 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, 1] [2019-11-07 04:22:44,541 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:44,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:44,552 INFO L82 PathProgramCache]: Analyzing trace with hash -73053180, now seen corresponding path program 1 times [2019-11-07 04:22:44,561 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:44,561 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10474069] [2019-11-07 04:22:44,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:22:45,198 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10474069] [2019-11-07 04:22:45,199 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:45,199 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:22:45,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133872275] [2019-11-07 04:22:45,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:22:45,211 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:45,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:22:45,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:22:45,234 INFO L87 Difference]: Start difference. First operand 318 states. Second operand 2 states. [2019-11-07 04:22:45,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:45,350 INFO L93 Difference]: Finished difference Result 413 states and 495 transitions. [2019-11-07 04:22:45,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:22:45,351 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 136 [2019-11-07 04:22:45,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:45,388 INFO L225 Difference]: With dead ends: 413 [2019-11-07 04:22:45,388 INFO L226 Difference]: Without dead ends: 278 [2019-11-07 04:22:45,395 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:22:45,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-11-07 04:22:45,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-11-07 04:22:45,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-11-07 04:22:45,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 332 transitions. [2019-11-07 04:22:45,515 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 332 transitions. Word has length 136 [2019-11-07 04:22:45,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:45,518 INFO L462 AbstractCegarLoop]: Abstraction has 278 states and 332 transitions. [2019-11-07 04:22:45,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:22:45,519 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 332 transitions. [2019-11-07 04:22:45,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-11-07 04:22:45,533 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:45,534 INFO L410 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, 1, 1] [2019-11-07 04:22:45,534 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:45,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:45,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1729470688, now seen corresponding path program 1 times [2019-11-07 04:22:45,535 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:45,535 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654953944] [2019-11-07 04:22:45,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:45,770 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:22:45,770 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654953944] [2019-11-07 04:22:45,770 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:45,771 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:22:45,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320079761] [2019-11-07 04:22:45,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:22:45,773 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:45,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:22:45,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:22:45,774 INFO L87 Difference]: Start difference. First operand 278 states and 332 transitions. Second operand 3 states. [2019-11-07 04:22:45,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:45,880 INFO L93 Difference]: Finished difference Result 398 states and 466 transitions. [2019-11-07 04:22:45,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:22:45,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2019-11-07 04:22:45,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:45,890 INFO L225 Difference]: With dead ends: 398 [2019-11-07 04:22:45,890 INFO L226 Difference]: Without dead ends: 280 [2019-11-07 04:22:45,894 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:22:45,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2019-11-07 04:22:45,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2019-11-07 04:22:45,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2019-11-07 04:22:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 334 transitions. [2019-11-07 04:22:45,933 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 334 transitions. Word has length 137 [2019-11-07 04:22:45,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:45,934 INFO L462 AbstractCegarLoop]: Abstraction has 280 states and 334 transitions. [2019-11-07 04:22:45,934 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:22:45,934 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 334 transitions. [2019-11-07 04:22:45,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-07 04:22:45,938 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:45,939 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:22:45,939 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:45,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:45,939 INFO L82 PathProgramCache]: Analyzing trace with hash 729914396, now seen corresponding path program 1 times [2019-11-07 04:22:45,940 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:45,940 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531480669] [2019-11-07 04:22:45,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:22:46,196 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531480669] [2019-11-07 04:22:46,196 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:46,196 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:22:46,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544199183] [2019-11-07 04:22:46,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:22:46,199 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:46,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:22:46,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:22:46,199 INFO L87 Difference]: Start difference. First operand 280 states and 334 transitions. Second operand 3 states. [2019-11-07 04:22:46,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:46,251 INFO L93 Difference]: Finished difference Result 540 states and 672 transitions. [2019-11-07 04:22:46,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:22:46,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2019-11-07 04:22:46,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:46,256 INFO L225 Difference]: With dead ends: 540 [2019-11-07 04:22:46,256 INFO L226 Difference]: Without dead ends: 318 [2019-11-07 04:22:46,259 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:22:46,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2019-11-07 04:22:46,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2019-11-07 04:22:46,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2019-11-07 04:22:46,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 399 transitions. [2019-11-07 04:22:46,291 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 399 transitions. Word has length 142 [2019-11-07 04:22:46,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:46,292 INFO L462 AbstractCegarLoop]: Abstraction has 317 states and 399 transitions. [2019-11-07 04:22:46,292 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:22:46,292 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 399 transitions. [2019-11-07 04:22:46,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-11-07 04:22:46,295 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:46,295 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:22:46,295 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:46,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:46,296 INFO L82 PathProgramCache]: Analyzing trace with hash 134138767, now seen corresponding path program 1 times [2019-11-07 04:22:46,296 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:46,296 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759037700] [2019-11-07 04:22:46,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:47,015 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:22:47,015 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759037700] [2019-11-07 04:22:47,016 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:47,016 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2019-11-07 04:22:47,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749661926] [2019-11-07 04:22:47,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-07 04:22:47,018 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:47,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-07 04:22:47,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2019-11-07 04:22:47,019 INFO L87 Difference]: Start difference. First operand 317 states and 399 transitions. Second operand 22 states. [2019-11-07 04:22:52,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:52,581 INFO L93 Difference]: Finished difference Result 678 states and 822 transitions. [2019-11-07 04:22:52,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-11-07 04:22:52,581 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 143 [2019-11-07 04:22:52,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:52,586 INFO L225 Difference]: With dead ends: 678 [2019-11-07 04:22:52,586 INFO L226 Difference]: Without dead ends: 536 [2019-11-07 04:22:52,588 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=233, Invalid=1929, Unknown=0, NotChecked=0, Total=2162 [2019-11-07 04:22:52,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2019-11-07 04:22:52,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 527. [2019-11-07 04:22:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2019-11-07 04:22:52,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 633 transitions. [2019-11-07 04:22:52,623 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 633 transitions. Word has length 143 [2019-11-07 04:22:52,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:52,624 INFO L462 AbstractCegarLoop]: Abstraction has 527 states and 633 transitions. [2019-11-07 04:22:52,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-07 04:22:52,625 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 633 transitions. [2019-11-07 04:22:52,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 04:22:52,628 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:52,628 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:22:52,628 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:52,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:52,629 INFO L82 PathProgramCache]: Analyzing trace with hash 750693262, now seen corresponding path program 1 times [2019-11-07 04:22:52,629 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:52,629 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91799159] [2019-11-07 04:22:52,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:52,915 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:22:52,916 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91799159] [2019-11-07 04:22:52,916 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:52,916 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 04:22:52,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420125359] [2019-11-07 04:22:52,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 04:22:52,917 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:52,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 04:22:52,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:22:52,918 INFO L87 Difference]: Start difference. First operand 527 states and 633 transitions. Second operand 12 states. [2019-11-07 04:22:55,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:55,079 INFO L93 Difference]: Finished difference Result 1101 states and 1297 transitions. [2019-11-07 04:22:55,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-07 04:22:55,082 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 149 [2019-11-07 04:22:55,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:55,096 INFO L225 Difference]: With dead ends: 1101 [2019-11-07 04:22:55,096 INFO L226 Difference]: Without dead ends: 847 [2019-11-07 04:22:55,110 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2019-11-07 04:22:55,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2019-11-07 04:22:55,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 777. [2019-11-07 04:22:55,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2019-11-07 04:22:55,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 923 transitions. [2019-11-07 04:22:55,266 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 923 transitions. Word has length 149 [2019-11-07 04:22:55,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:55,268 INFO L462 AbstractCegarLoop]: Abstraction has 777 states and 923 transitions. [2019-11-07 04:22:55,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 04:22:55,268 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 923 transitions. [2019-11-07 04:22:55,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-07 04:22:55,275 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:55,276 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:22:55,276 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:55,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:55,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1988398848, now seen corresponding path program 1 times [2019-11-07 04:22:55,277 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:55,277 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158785988] [2019-11-07 04:22:55,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:55,416 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:22:55,416 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158785988] [2019-11-07 04:22:55,416 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:55,416 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:22:55,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81134501] [2019-11-07 04:22:55,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:22:55,418 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:55,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:22:55,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:22:55,418 INFO L87 Difference]: Start difference. First operand 777 states and 923 transitions. Second operand 3 states. [2019-11-07 04:22:55,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:55,636 INFO L93 Difference]: Finished difference Result 1602 states and 1970 transitions. [2019-11-07 04:22:55,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:22:55,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-11-07 04:22:55,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:55,645 INFO L225 Difference]: With dead ends: 1602 [2019-11-07 04:22:55,646 INFO L226 Difference]: Without dead ends: 883 [2019-11-07 04:22:55,649 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:22:55,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2019-11-07 04:22:55,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 881. [2019-11-07 04:22:55,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2019-11-07 04:22:55,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1105 transitions. [2019-11-07 04:22:55,724 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1105 transitions. Word has length 171 [2019-11-07 04:22:55,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:55,725 INFO L462 AbstractCegarLoop]: Abstraction has 881 states and 1105 transitions. [2019-11-07 04:22:55,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:22:55,725 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1105 transitions. [2019-11-07 04:22:55,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-11-07 04:22:55,733 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:55,733 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:22:55,734 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:55,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:55,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1013973423, now seen corresponding path program 1 times [2019-11-07 04:22:55,735 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:55,735 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847084161] [2019-11-07 04:22:55,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:55,940 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 04:22:55,941 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847084161] [2019-11-07 04:22:55,941 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:55,942 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:22:55,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506776740] [2019-11-07 04:22:55,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:22:55,943 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:55,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:22:55,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:22:55,944 INFO L87 Difference]: Start difference. First operand 881 states and 1105 transitions. Second operand 3 states. [2019-11-07 04:22:56,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:56,031 INFO L93 Difference]: Finished difference Result 1899 states and 2492 transitions. [2019-11-07 04:22:56,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:22:56,031 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2019-11-07 04:22:56,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:56,038 INFO L225 Difference]: With dead ends: 1899 [2019-11-07 04:22:56,038 INFO L226 Difference]: Without dead ends: 1076 [2019-11-07 04:22:56,041 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:22:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2019-11-07 04:22:56,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1074. [2019-11-07 04:22:56,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2019-11-07 04:22:56,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1442 transitions. [2019-11-07 04:22:56,111 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1442 transitions. Word has length 177 [2019-11-07 04:22:56,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:56,112 INFO L462 AbstractCegarLoop]: Abstraction has 1074 states and 1442 transitions. [2019-11-07 04:22:56,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:22:56,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1442 transitions. [2019-11-07 04:22:56,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-11-07 04:22:56,118 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:56,119 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:22:56,119 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:56,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:56,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1997364994, now seen corresponding path program 1 times [2019-11-07 04:22:56,120 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:56,120 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903943854] [2019-11-07 04:22:56,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:22:56,445 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903943854] [2019-11-07 04:22:56,446 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:56,446 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 04:22:56,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969860238] [2019-11-07 04:22:56,447 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 04:22:56,447 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:56,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 04:22:56,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:22:56,448 INFO L87 Difference]: Start difference. First operand 1074 states and 1442 transitions. Second operand 12 states. [2019-11-07 04:22:59,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:59,688 INFO L93 Difference]: Finished difference Result 2463 states and 3428 transitions. [2019-11-07 04:22:59,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-07 04:22:59,691 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 173 [2019-11-07 04:22:59,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:59,704 INFO L225 Difference]: With dead ends: 2463 [2019-11-07 04:22:59,704 INFO L226 Difference]: Without dead ends: 1778 [2019-11-07 04:22:59,710 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=586, Unknown=0, NotChecked=0, Total=756 [2019-11-07 04:22:59,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2019-11-07 04:22:59,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1447. [2019-11-07 04:22:59,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1447 states. [2019-11-07 04:22:59,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 2107 transitions. [2019-11-07 04:22:59,811 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 2107 transitions. Word has length 173 [2019-11-07 04:22:59,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:59,811 INFO L462 AbstractCegarLoop]: Abstraction has 1447 states and 2107 transitions. [2019-11-07 04:22:59,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 04:22:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 2107 transitions. [2019-11-07 04:22:59,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-11-07 04:22:59,819 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:59,820 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:22:59,820 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:59,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:59,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1905112598, now seen corresponding path program 1 times [2019-11-07 04:22:59,821 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:59,821 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181475057] [2019-11-07 04:22:59,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 04:22:59,971 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181475057] [2019-11-07 04:22:59,972 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:59,973 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:22:59,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941887322] [2019-11-07 04:22:59,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:22:59,974 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:59,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:22:59,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:22:59,974 INFO L87 Difference]: Start difference. First operand 1447 states and 2107 transitions. Second operand 3 states. [2019-11-07 04:23:00,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:23:00,070 INFO L93 Difference]: Finished difference Result 3101 states and 4646 transitions. [2019-11-07 04:23:00,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:23:00,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2019-11-07 04:23:00,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:23:00,082 INFO L225 Difference]: With dead ends: 3101 [2019-11-07 04:23:00,082 INFO L226 Difference]: Without dead ends: 1716 [2019-11-07 04:23:00,087 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:23:00,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2019-11-07 04:23:00,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1715. [2019-11-07 04:23:00,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1715 states. [2019-11-07 04:23:00,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2583 transitions. [2019-11-07 04:23:00,214 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2583 transitions. Word has length 179 [2019-11-07 04:23:00,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:23:00,216 INFO L462 AbstractCegarLoop]: Abstraction has 1715 states and 2583 transitions. [2019-11-07 04:23:00,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:23:00,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2583 transitions. [2019-11-07 04:23:00,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-11-07 04:23:00,227 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:23:00,227 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:23:00,227 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:23:00,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:23:00,228 INFO L82 PathProgramCache]: Analyzing trace with hash -463742468, now seen corresponding path program 1 times [2019-11-07 04:23:00,228 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:23:00,228 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210409963] [2019-11-07 04:23:00,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:23:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:23:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 04:23:00,699 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210409963] [2019-11-07 04:23:00,700 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:23:00,700 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 04:23:00,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370849856] [2019-11-07 04:23:00,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 04:23:00,702 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:23:00,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 04:23:00,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:23:00,703 INFO L87 Difference]: Start difference. First operand 1715 states and 2583 transitions. Second operand 12 states. [2019-11-07 04:23:05,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:23:05,539 INFO L93 Difference]: Finished difference Result 3223 states and 4774 transitions. [2019-11-07 04:23:05,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-07 04:23:05,540 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 182 [2019-11-07 04:23:05,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:23:05,556 INFO L225 Difference]: With dead ends: 3223 [2019-11-07 04:23:05,556 INFO L226 Difference]: Without dead ends: 1901 [2019-11-07 04:23:05,568 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2019-11-07 04:23:05,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2019-11-07 04:23:05,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 1570. [2019-11-07 04:23:05,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2019-11-07 04:23:05,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 2314 transitions. [2019-11-07 04:23:05,694 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 2314 transitions. Word has length 182 [2019-11-07 04:23:05,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:23:05,694 INFO L462 AbstractCegarLoop]: Abstraction has 1570 states and 2314 transitions. [2019-11-07 04:23:05,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 04:23:05,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 2314 transitions. [2019-11-07 04:23:05,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-11-07 04:23:05,703 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:23:05,704 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:23:05,704 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:23:05,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:23:05,705 INFO L82 PathProgramCache]: Analyzing trace with hash 938999292, now seen corresponding path program 1 times [2019-11-07 04:23:05,705 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:23:05,705 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905245231] [2019-11-07 04:23:05,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:23:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:23:06,262 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:23:06,263 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905245231] [2019-11-07 04:23:06,263 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206173277] [2019-11-07 04:23:06,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:23:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:23:06,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 2557 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:23:06,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:23:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:23:07,061 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:23:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:23:07,364 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [178522641] [2019-11-07 04:23:07,403 INFO L159 IcfgInterpreter]: Started Sifa with 164 locations of interest [2019-11-07 04:23:07,403 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:23:07,411 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:23:07,418 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:23:07,418 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs