java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:16:30,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:16:30,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:16:30,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:16:30,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:16:30,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:16:30,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:16:30,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:16:30,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:16:30,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:16:30,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:16:30,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:16:30,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:16:30,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:16:30,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:16:30,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:16:30,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:16:30,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:16:30,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:16:30,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:16:30,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:16:30,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:16:30,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:16:30,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:16:30,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:16:30,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:16:30,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:16:30,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:16:30,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:16:30,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:16:30,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:16:30,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:16:30,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:16:30,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:16:30,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:16:30,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:16:30,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:16:30,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:16:30,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:16:30,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:16:30,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:16:30,275 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:16:30,303 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:16:30,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:16:30,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:16:30,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:16:30,306 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:16:30,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:16:30,306 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:16:30,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:16:30,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:16:30,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:16:30,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:16:30,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:16:30,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:16:30,308 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:16:30,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:16:30,308 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:16:30,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:16:30,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:16:30,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:16:30,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:16:30,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:16:30,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:16:30,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:16:30,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:16:30,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:16:30,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:16:30,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:16:30,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:16:30,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:16:30,622 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:16:30,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:16:30,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:16:30,640 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:16:30,640 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:16:30,641 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product25.cil.c [2019-10-13 21:16:30,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b284ed390/cdf1834637744c05836751818bd1ef75/FLAGbc3ae7190 [2019-10-13 21:16:31,373 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:16:31,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product25.cil.c [2019-10-13 21:16:31,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b284ed390/cdf1834637744c05836751818bd1ef75/FLAGbc3ae7190 [2019-10-13 21:16:31,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b284ed390/cdf1834637744c05836751818bd1ef75 [2019-10-13 21:16:31,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:16:31,597 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:16:31,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:31,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:16:31,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:16:31,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:31" (1/1) ... [2019-10-13 21:16:31,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@439f53cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:31, skipping insertion in model container [2019-10-13 21:16:31,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:31" (1/1) ... [2019-10-13 21:16:31,613 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:16:31,685 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:16:32,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:32,420 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:16:32,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:32,673 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:16:32,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32 WrapperNode [2019-10-13 21:16:32,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:32,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:16:32,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:16:32,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:16:32,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32" (1/1) ... [2019-10-13 21:16:32,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32" (1/1) ... [2019-10-13 21:16:32,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32" (1/1) ... [2019-10-13 21:16:32,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32" (1/1) ... [2019-10-13 21:16:32,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32" (1/1) ... [2019-10-13 21:16:32,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32" (1/1) ... [2019-10-13 21:16:32,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32" (1/1) ... [2019-10-13 21:16:32,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:16:32,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:16:32,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:16:32,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:16:32,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:16:32,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:16:32,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:16:32,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:32,967 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:16:32,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:32,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:32,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:32,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:16:32,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:16:32,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:16:32,970 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:16:32,970 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:16:32,971 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:16:32,972 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:16:32,972 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:16:32,972 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:16:32,975 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:16:32,975 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:16:32,975 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:16:32,976 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:16:32,976 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:16:32,976 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:16:32,977 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:16:32,977 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:16:32,977 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:16:32,977 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:16:32,978 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:16:32,978 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:16:32,978 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:16:32,978 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:16:32,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:16:32,979 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:16:32,979 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:16:32,979 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:16:32,979 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:16:32,980 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:16:32,980 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:16:32,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:16:32,980 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:16:32,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:16:32,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:16:32,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:16:32,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:16:32,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:16:32,982 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:16:32,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:16:32,982 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:16:32,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:16:32,982 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:16:32,983 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:16:32,983 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:16:32,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:16:32,983 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:16:32,983 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:16:32,983 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:16:32,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:16:32,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:16:32,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:16:32,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:16:32,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:32,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:16:32,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:32,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:16:32,986 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:16:32,986 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:16:32,986 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:16:32,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:16:32,987 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:16:32,987 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:16:32,987 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:16:32,987 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:16:32,987 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:16:32,988 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:16:32,988 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:16:32,989 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:16:32,989 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:16:32,989 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:16:32,989 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:16:32,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:32,990 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:16:32,990 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:16:32,990 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:16:32,991 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:16:32,991 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:16:32,991 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:16:32,992 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:16:32,992 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:16:32,993 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:16:32,993 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:16:32,993 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:16:32,993 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:16:32,993 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:16:32,994 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:16:32,994 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:16:32,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:16:32,994 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:16:32,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:16:32,995 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:16:32,995 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:16:32,995 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:16:32,995 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:16:32,995 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:16:32,995 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:16:32,996 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:16:32,996 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:16:32,996 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:16:32,996 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:16:32,996 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:16:32,997 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:16:32,997 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:16:32,997 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:16:32,997 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:16:32,997 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:16:32,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:16:32,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:16:32,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:16:32,998 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:16:32,998 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:16:32,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:16:32,999 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:16:32,999 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:16:32,999 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:16:32,999 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:33,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:16:33,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:16:33,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:16:33,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:16:33,001 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:33,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:16:33,002 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:33,002 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:33,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:16:33,002 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:16:33,003 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:16:33,003 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:16:33,003 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:16:33,004 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:16:33,007 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:16:33,007 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:16:33,007 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:16:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:16:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:16:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:16:33,009 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:16:33,015 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:16:33,015 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:16:33,015 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:16:33,016 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:16:33,016 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:16:33,016 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:16:33,016 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:16:33,017 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:16:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:16:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:16:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:16:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:16:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:16:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:16:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:16:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:16:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:16:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:16:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:16:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:16:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:16:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:16:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:16:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:16:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:16:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:16:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:16:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:16:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:16:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:16:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:16:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:16:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:16:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:16:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:16:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:16:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:16:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:16:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:16:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:16:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:16:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:16:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:16:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:16:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:16:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:16:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:16:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:16:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:16:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:16:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:16:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:16:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:16:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:16:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:16:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:16:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:16:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:16:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:16:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:16:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:16:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:16:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:16:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:16:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:16:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:16:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:16:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:16:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:16:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:16:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:16:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:16:33,027 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:16:33,027 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:16:33,027 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:16:33,027 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:16:33,027 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:16:33,027 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:16:33,027 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:16:33,028 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:16:33,028 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:33,028 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:33,028 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:16:33,028 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:16:33,028 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:16:33,028 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:16:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:16:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:16:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:16:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:16:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:16:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:16:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:16:33,030 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:16:33,030 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:16:33,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:16:33,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:16:33,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:16:35,398 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:16:35,399 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:16:35,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:35 BoogieIcfgContainer [2019-10-13 21:16:35,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:16:35,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:16:35,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:16:35,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:16:35,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:16:31" (1/3) ... [2019-10-13 21:16:35,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521115d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:35, skipping insertion in model container [2019-10-13 21:16:35,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32" (2/3) ... [2019-10-13 21:16:35,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521115d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:35, skipping insertion in model container [2019-10-13 21:16:35,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:35" (3/3) ... [2019-10-13 21:16:35,412 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product25.cil.c [2019-10-13 21:16:35,423 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:16:35,437 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:16:35,451 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:16:35,493 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:16:35,494 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:16:35,494 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:16:35,494 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:16:35,495 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:16:35,499 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:16:35,499 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:16:35,499 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:16:35,540 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states. [2019-10-13 21:16:35,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 21:16:35,564 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:35,565 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:35,569 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:35,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:35,579 INFO L82 PathProgramCache]: Analyzing trace with hash 979301507, now seen corresponding path program 1 times [2019-10-13 21:16:35,589 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:35,589 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462562729] [2019-10-13 21:16:35,589 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:35,590 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:35,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:36,267 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:36,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462562729] [2019-10-13 21:16:36,269 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:36,270 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:16:36,270 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775049707] [2019-10-13 21:16:36,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:16:36,278 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:36,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:16:36,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:36,296 INFO L87 Difference]: Start difference. First operand 587 states. Second operand 2 states. [2019-10-13 21:16:36,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:36,380 INFO L93 Difference]: Finished difference Result 860 states and 1158 transitions. [2019-10-13 21:16:36,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:16:36,382 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 157 [2019-10-13 21:16:36,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:36,415 INFO L225 Difference]: With dead ends: 860 [2019-10-13 21:16:36,416 INFO L226 Difference]: Without dead ends: 558 [2019-10-13 21:16:36,422 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:36,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2019-10-13 21:16:36,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2019-10-13 21:16:36,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2019-10-13 21:16:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 758 transitions. [2019-10-13 21:16:36,517 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 758 transitions. Word has length 157 [2019-10-13 21:16:36,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:36,519 INFO L462 AbstractCegarLoop]: Abstraction has 558 states and 758 transitions. [2019-10-13 21:16:36,519 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:16:36,519 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 758 transitions. [2019-10-13 21:16:36,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:16:36,526 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:36,527 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:36,527 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:36,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:36,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1208333111, now seen corresponding path program 1 times [2019-10-13 21:16:36,528 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:36,528 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88292898] [2019-10-13 21:16:36,528 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:36,528 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:36,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:36,754 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:36,754 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88292898] [2019-10-13 21:16:36,755 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:36,755 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:36,755 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969535028] [2019-10-13 21:16:36,765 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:36,766 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:36,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:36,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:36,767 INFO L87 Difference]: Start difference. First operand 558 states and 758 transitions. Second operand 3 states. [2019-10-13 21:16:36,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:36,876 INFO L93 Difference]: Finished difference Result 843 states and 1124 transitions. [2019-10-13 21:16:36,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:36,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-10-13 21:16:36,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:36,888 INFO L225 Difference]: With dead ends: 843 [2019-10-13 21:16:36,888 INFO L226 Difference]: Without dead ends: 561 [2019-10-13 21:16:36,893 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:36,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2019-10-13 21:16:37,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 560. [2019-10-13 21:16:37,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2019-10-13 21:16:37,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 760 transitions. [2019-10-13 21:16:37,048 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 760 transitions. Word has length 158 [2019-10-13 21:16:37,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:37,049 INFO L462 AbstractCegarLoop]: Abstraction has 560 states and 760 transitions. [2019-10-13 21:16:37,049 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:37,049 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 760 transitions. [2019-10-13 21:16:37,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 21:16:37,057 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:37,057 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:37,058 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:37,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:37,058 INFO L82 PathProgramCache]: Analyzing trace with hash -898533821, now seen corresponding path program 1 times [2019-10-13 21:16:37,058 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:37,059 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308723394] [2019-10-13 21:16:37,059 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:37,059 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:37,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:37,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308723394] [2019-10-13 21:16:37,323 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:37,324 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:37,324 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258196044] [2019-10-13 21:16:37,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:37,329 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:37,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:37,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:37,330 INFO L87 Difference]: Start difference. First operand 560 states and 760 transitions. Second operand 3 states. [2019-10-13 21:16:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:37,371 INFO L93 Difference]: Finished difference Result 1098 states and 1521 transitions. [2019-10-13 21:16:37,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:37,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2019-10-13 21:16:37,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:37,378 INFO L225 Difference]: With dead ends: 1098 [2019-10-13 21:16:37,378 INFO L226 Difference]: Without dead ends: 603 [2019-10-13 21:16:37,383 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:37,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-13 21:16:37,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 602. [2019-10-13 21:16:37,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-10-13 21:16:37,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 832 transitions. [2019-10-13 21:16:37,422 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 832 transitions. Word has length 164 [2019-10-13 21:16:37,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:37,423 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 832 transitions. [2019-10-13 21:16:37,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:37,423 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 832 transitions. [2019-10-13 21:16:37,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 21:16:37,431 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:37,432 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:37,432 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:37,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:37,434 INFO L82 PathProgramCache]: Analyzing trace with hash -2079025427, now seen corresponding path program 1 times [2019-10-13 21:16:37,435 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:37,435 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180088473] [2019-10-13 21:16:37,435 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:37,435 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:37,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:37,759 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:37,760 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180088473] [2019-10-13 21:16:37,760 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:37,763 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:16:37,763 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353004058] [2019-10-13 21:16:37,764 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:37,765 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:37,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:37,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:16:37,767 INFO L87 Difference]: Start difference. First operand 602 states and 832 transitions. Second operand 7 states. [2019-10-13 21:16:41,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:41,442 INFO L93 Difference]: Finished difference Result 1158 states and 1558 transitions. [2019-10-13 21:16:41,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:16:41,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2019-10-13 21:16:41,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:41,449 INFO L225 Difference]: With dead ends: 1158 [2019-10-13 21:16:41,449 INFO L226 Difference]: Without dead ends: 887 [2019-10-13 21:16:41,451 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2019-10-13 21:16:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 878. [2019-10-13 21:16:41,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2019-10-13 21:16:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1192 transitions. [2019-10-13 21:16:41,497 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1192 transitions. Word has length 165 [2019-10-13 21:16:41,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:41,498 INFO L462 AbstractCegarLoop]: Abstraction has 878 states and 1192 transitions. [2019-10-13 21:16:41,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:41,499 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1192 transitions. [2019-10-13 21:16:41,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:16:41,502 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:41,502 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:41,503 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:41,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:41,503 INFO L82 PathProgramCache]: Analyzing trace with hash 2091303860, now seen corresponding path program 1 times [2019-10-13 21:16:41,503 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:41,504 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530738703] [2019-10-13 21:16:41,504 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:41,504 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:41,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:41,854 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:41,855 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530738703] [2019-10-13 21:16:41,855 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:41,856 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-13 21:16:41,856 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201366007] [2019-10-13 21:16:41,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 21:16:41,857 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:41,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 21:16:41,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:16:41,858 INFO L87 Difference]: Start difference. First operand 878 states and 1192 transitions. Second operand 18 states. [2019-10-13 21:16:42,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:42,503 INFO L93 Difference]: Finished difference Result 1519 states and 2047 transitions. [2019-10-13 21:16:42,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 21:16:42,504 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 166 [2019-10-13 21:16:42,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:42,511 INFO L225 Difference]: With dead ends: 1519 [2019-10-13 21:16:42,511 INFO L226 Difference]: Without dead ends: 966 [2019-10-13 21:16:42,514 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:16:42,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2019-10-13 21:16:42,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 964. [2019-10-13 21:16:42,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2019-10-13 21:16:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1313 transitions. [2019-10-13 21:16:42,562 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1313 transitions. Word has length 166 [2019-10-13 21:16:42,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:42,563 INFO L462 AbstractCegarLoop]: Abstraction has 964 states and 1313 transitions. [2019-10-13 21:16:42,563 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 21:16:42,563 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1313 transitions. [2019-10-13 21:16:42,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 21:16:42,568 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:42,568 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:42,568 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:42,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:42,569 INFO L82 PathProgramCache]: Analyzing trace with hash -328084636, now seen corresponding path program 1 times [2019-10-13 21:16:42,569 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:42,569 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084199177] [2019-10-13 21:16:42,569 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:42,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:42,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:42,747 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084199177] [2019-10-13 21:16:42,747 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:42,747 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:16:42,747 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970587677] [2019-10-13 21:16:42,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:16:42,748 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:42,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:16:42,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:16:42,749 INFO L87 Difference]: Start difference. First operand 964 states and 1313 transitions. Second operand 8 states. [2019-10-13 21:16:44,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:44,037 INFO L93 Difference]: Finished difference Result 2103 states and 2822 transitions. [2019-10-13 21:16:44,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:44,037 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2019-10-13 21:16:44,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:44,049 INFO L225 Difference]: With dead ends: 2103 [2019-10-13 21:16:44,049 INFO L226 Difference]: Without dead ends: 1642 [2019-10-13 21:16:44,053 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:44,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2019-10-13 21:16:44,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1623. [2019-10-13 21:16:44,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1623 states. [2019-10-13 21:16:44,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2190 transitions. [2019-10-13 21:16:44,175 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2190 transitions. Word has length 175 [2019-10-13 21:16:44,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:44,176 INFO L462 AbstractCegarLoop]: Abstraction has 1623 states and 2190 transitions. [2019-10-13 21:16:44,176 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:16:44,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2190 transitions. [2019-10-13 21:16:44,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-13 21:16:44,185 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:44,185 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:44,186 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:44,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:44,187 INFO L82 PathProgramCache]: Analyzing trace with hash 958665188, now seen corresponding path program 1 times [2019-10-13 21:16:44,187 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:44,187 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205213086] [2019-10-13 21:16:44,188 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:44,188 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:44,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:44,607 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:44,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205213086] [2019-10-13 21:16:44,608 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:44,608 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-10-13 21:16:44,608 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252161990] [2019-10-13 21:16:44,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 21:16:44,609 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:44,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 21:16:44,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2019-10-13 21:16:44,610 INFO L87 Difference]: Start difference. First operand 1623 states and 2190 transitions. Second operand 17 states. [2019-10-13 21:16:45,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:45,480 INFO L93 Difference]: Finished difference Result 2246 states and 3012 transitions. [2019-10-13 21:16:45,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 21:16:45,481 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 176 [2019-10-13 21:16:45,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:45,491 INFO L225 Difference]: With dead ends: 2246 [2019-10-13 21:16:45,492 INFO L226 Difference]: Without dead ends: 1622 [2019-10-13 21:16:45,496 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:16:45,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2019-10-13 21:16:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1621. [2019-10-13 21:16:45,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1621 states. [2019-10-13 21:16:45,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2185 transitions. [2019-10-13 21:16:45,587 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2185 transitions. Word has length 176 [2019-10-13 21:16:45,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:45,587 INFO L462 AbstractCegarLoop]: Abstraction has 1621 states and 2185 transitions. [2019-10-13 21:16:45,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 21:16:45,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2185 transitions. [2019-10-13 21:16:45,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-13 21:16:45,592 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:45,592 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:45,593 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:45,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:45,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1418562754, now seen corresponding path program 2 times [2019-10-13 21:16:45,593 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:45,593 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297884578] [2019-10-13 21:16:45,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:45,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:45,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:45,843 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:45,843 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297884578] [2019-10-13 21:16:45,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662046213] [2019-10-13 21:16:45,844 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:46,295 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:46,295 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:46,304 INFO L256 TraceCheckSpWp]: Trace formula consists of 2120 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 21:16:46,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:16:46,593 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:16:47,134 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:47,134 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-13 21:16:47,134 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319936804] [2019-10-13 21:16:47,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:47,135 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:47,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:47,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:16:47,136 INFO L87 Difference]: Start difference. First operand 1621 states and 2185 transitions. Second operand 14 states. [2019-10-13 21:16:49,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:49,442 INFO L93 Difference]: Finished difference Result 4835 states and 6554 transitions. [2019-10-13 21:16:49,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:49,443 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 176 [2019-10-13 21:16:49,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:49,546 INFO L225 Difference]: With dead ends: 4835 [2019-10-13 21:16:49,546 INFO L226 Difference]: Without dead ends: 4832 [2019-10-13 21:16:49,551 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 346 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:16:49,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2019-10-13 21:16:49,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 3499. [2019-10-13 21:16:49,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3499 states. [2019-10-13 21:16:49,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 4801 transitions. [2019-10-13 21:16:49,822 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 4801 transitions. Word has length 176 [2019-10-13 21:16:49,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:49,823 INFO L462 AbstractCegarLoop]: Abstraction has 3499 states and 4801 transitions. [2019-10-13 21:16:49,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:16:49,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 4801 transitions. [2019-10-13 21:16:49,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 21:16:49,832 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:49,833 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:50,043 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:50,043 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:50,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:50,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1071020961, now seen corresponding path program 1 times [2019-10-13 21:16:50,044 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:50,046 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547769474] [2019-10-13 21:16:50,046 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:50,046 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:50,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:50,239 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:50,240 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547769474] [2019-10-13 21:16:50,240 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749526156] [2019-10-13 21:16:50,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:50,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 2696 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:50,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:50,978 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:51,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:51,343 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:51,481 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:51,481 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:16:51,481 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954440517] [2019-10-13 21:16:51,482 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:51,482 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:51,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:51,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:16:51,483 INFO L87 Difference]: Start difference. First operand 3499 states and 4801 transitions. Second operand 7 states. [2019-10-13 21:16:53,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:53,191 INFO L93 Difference]: Finished difference Result 6971 states and 9573 transitions. [2019-10-13 21:16:53,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:53,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2019-10-13 21:16:53,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:53,215 INFO L225 Difference]: With dead ends: 6971 [2019-10-13 21:16:53,215 INFO L226 Difference]: Without dead ends: 3511 [2019-10-13 21:16:53,228 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 347 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:16:53,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2019-10-13 21:16:53,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 3501. [2019-10-13 21:16:53,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3501 states. [2019-10-13 21:16:53,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 4804 transitions. [2019-10-13 21:16:53,405 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 4804 transitions. Word has length 179 [2019-10-13 21:16:53,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:53,405 INFO L462 AbstractCegarLoop]: Abstraction has 3501 states and 4804 transitions. [2019-10-13 21:16:53,406 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:53,406 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 4804 transitions. [2019-10-13 21:16:53,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-13 21:16:53,415 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:53,415 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:53,623 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:53,623 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:53,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:53,624 INFO L82 PathProgramCache]: Analyzing trace with hash 126573105, now seen corresponding path program 1 times [2019-10-13 21:16:53,624 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:53,625 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001126647] [2019-10-13 21:16:53,625 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:53,625 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:53,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:53,797 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:53,801 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001126647] [2019-10-13 21:16:53,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975054703] [2019-10-13 21:16:53,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:54,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 2694 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:54,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:54,713 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:16:54,713 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:55,036 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:55,104 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:55,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:55,258 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:55,258 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:55,259 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-13 21:16:55,259 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846256054] [2019-10-13 21:16:55,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:16:55,260 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:55,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:16:55,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:16:55,260 INFO L87 Difference]: Start difference. First operand 3501 states and 4804 transitions. Second operand 9 states. [2019-10-13 21:16:57,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:57,507 INFO L93 Difference]: Finished difference Result 6978 states and 9583 transitions. [2019-10-13 21:16:57,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:16:57,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 180 [2019-10-13 21:16:57,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:57,526 INFO L225 Difference]: With dead ends: 6978 [2019-10-13 21:16:57,527 INFO L226 Difference]: Without dead ends: 3519 [2019-10-13 21:16:57,538 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 344 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:16:57,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3519 states. [2019-10-13 21:16:57,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3519 to 3517. [2019-10-13 21:16:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3517 states. [2019-10-13 21:16:57,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 4820 transitions. [2019-10-13 21:16:57,727 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 4820 transitions. Word has length 180 [2019-10-13 21:16:57,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:57,729 INFO L462 AbstractCegarLoop]: Abstraction has 3517 states and 4820 transitions. [2019-10-13 21:16:57,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:16:57,729 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 4820 transitions. [2019-10-13 21:16:57,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-13 21:16:57,741 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:57,742 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:57,957 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:57,957 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:57,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:57,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1604795262, now seen corresponding path program 1 times [2019-10-13 21:16:57,958 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:57,958 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061319821] [2019-10-13 21:16:57,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:57,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:57,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:58,109 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061319821] [2019-10-13 21:16:58,109 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680327311] [2019-10-13 21:16:58,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:58,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:58,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:58,883 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:58,883 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:59,190 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:59,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:59,319 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:59,498 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:59,498 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:59,499 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-13 21:16:59,499 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323190207] [2019-10-13 21:16:59,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:16:59,500 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:59,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:16:59,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:16:59,501 INFO L87 Difference]: Start difference. First operand 3517 states and 4820 transitions. Second operand 16 states. [2019-10-13 21:17:01,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:01,128 INFO L93 Difference]: Finished difference Result 6970 states and 9564 transitions. [2019-10-13 21:17:01,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:17:01,128 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 181 [2019-10-13 21:17:01,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:01,147 INFO L225 Difference]: With dead ends: 6970 [2019-10-13 21:17:01,147 INFO L226 Difference]: Without dead ends: 3541 [2019-10-13 21:17:01,160 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 346 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:17:01,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2019-10-13 21:17:01,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 3539. [2019-10-13 21:17:01,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3539 states. [2019-10-13 21:17:01,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 4845 transitions. [2019-10-13 21:17:01,324 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 4845 transitions. Word has length 181 [2019-10-13 21:17:01,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:01,324 INFO L462 AbstractCegarLoop]: Abstraction has 3539 states and 4845 transitions. [2019-10-13 21:17:01,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:17:01,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 4845 transitions. [2019-10-13 21:17:01,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-13 21:17:01,333 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:01,333 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:01,540 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:17:01,541 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:01,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:01,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1444117277, now seen corresponding path program 2 times [2019-10-13 21:17:01,542 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:01,542 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575298813] [2019-10-13 21:17:01,542 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:01,543 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:01,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:17:01,706 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575298813] [2019-10-13 21:17:01,706 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751481985] [2019-10-13 21:17:01,706 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:17:02,381 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:17:02,381 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:17:02,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 2591 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:17:02,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:17:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:17:02,486 INFO L321 TraceCheckSpWp]: Computing backward predicates...