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_spec9_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:19:05,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:19:05,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:19:05,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:19:05,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:19:05,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:19:05,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:19:05,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:19:05,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:19:05,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:19:05,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:19:05,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:19:05,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:19:05,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:19:05,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:19:05,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:19:05,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:19:05,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:19:05,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:19:05,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:19:05,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:19:05,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:19:05,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:19:05,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:19:05,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:19:05,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:19:05,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:19:05,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:19:05,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:19:05,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:19:05,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:19:05,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:19:05,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:19:05,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:19:05,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:19:05,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:19:05,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:19:05,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:19:05,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:19:05,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:19:05,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:19:05,379 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 21:19:05,403 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:19:05,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:19:05,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:19:05,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:19:05,405 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:19:05,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:19:05,405 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:19:05,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:19:05,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:19:05,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:19:05,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:19:05,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:19:05,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:19:05,407 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:19:05,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:19:05,407 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:19:05,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:19:05,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:19:05,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:19:05,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:19:05,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:19:05,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:19:05,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:19:05,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:19:05,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:19:05,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:19:05,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:19:05,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:19:05,409 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 21:19:05,679 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:19:05,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:19:05,704 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:19:05,705 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:19:05,705 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:19:05,706 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product29.cil.c [2019-10-13 21:19:05,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e152ea5f/e61baf2040c64975a1bf3372f4522093/FLAG6c6a7a7f1 [2019-10-13 21:19:06,408 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:19:06,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product29.cil.c [2019-10-13 21:19:06,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e152ea5f/e61baf2040c64975a1bf3372f4522093/FLAG6c6a7a7f1 [2019-10-13 21:19:06,617 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e152ea5f/e61baf2040c64975a1bf3372f4522093 [2019-10-13 21:19:06,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:19:06,628 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:19:06,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:06,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:19:06,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:19:06,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:06" (1/1) ... [2019-10-13 21:19:06,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aceb178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:06, skipping insertion in model container [2019-10-13 21:19:06,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:06" (1/1) ... [2019-10-13 21:19:06,644 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:19:06,711 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:19:07,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:07,456 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:19:07,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:07,711 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:19:07,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:07 WrapperNode [2019-10-13 21:19:07,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:07,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:19:07,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:19:07,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:19:07,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:07" (1/1) ... [2019-10-13 21:19:07,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:07" (1/1) ... [2019-10-13 21:19:07,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:07" (1/1) ... [2019-10-13 21:19:07,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:07" (1/1) ... [2019-10-13 21:19:07,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:07" (1/1) ... [2019-10-13 21:19:07,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:07" (1/1) ... [2019-10-13 21:19:07,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:07" (1/1) ... [2019-10-13 21:19:07,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:19:07,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:19:07,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:19:07,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:19:07,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:19:07,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:19:07,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:19:07,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:07,988 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:19:07,988 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:19:07,990 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:19:07,990 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:19:07,990 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:19:07,991 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:19:07,991 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:19:07,991 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:19:07,992 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:19:07,992 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:19:07,993 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:19:07,993 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:19:07,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:07,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:07,997 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:19:07,997 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:19:07,998 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:19:07,998 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:19:07,998 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:19:07,999 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:19:07,999 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:19:07,999 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:19:08,000 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:19:08,000 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:19:08,000 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:19:08,000 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:19:08,001 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:19:08,001 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:19:08,001 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:19:08,001 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:19:08,001 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:19:08,002 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:19:08,002 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:19:08,002 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:19:08,003 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:19:08,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:08,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:08,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:08,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:19:08,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:19:08,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:19:08,004 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:19:08,004 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:19:08,004 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:19:08,004 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:19:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:19:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:19:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:19:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:19:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:19:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:19:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:19:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:19:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:19:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:19:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:19:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:19:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:19:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:19:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:19:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:19:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:19:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:19:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:19:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:19:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:19:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:19:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:19:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:19:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:19:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:19:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:19:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:19:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:19:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:19:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:19:08,012 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:19:08,012 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:19:08,013 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:19:08,013 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:19:08,013 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:19:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:19:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:19:08,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:19:08,016 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:19:08,016 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:19:08,016 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:19:08,016 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:19:08,016 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:19:08,016 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:19:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:19:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:19:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:19:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:19:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:19:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:08,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:19:08,018 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:19:08,018 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:19:08,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:19:08,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:19:08,018 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:19:08,019 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:19:08,019 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:19:08,019 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:19:08,019 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:19:08,019 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:19:08,019 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:19:08,019 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:19:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:19:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:19:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:19:08,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:19:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:19:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:19:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:19:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:19:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:19:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:19:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:19:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:19:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:19:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:19:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:19:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:19:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:19:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:19:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:19:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:19:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:19:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:19:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:19:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:19:08,030 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:19:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:19:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:19:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:19:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:19:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:19:08,033 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:19:08,039 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:08,040 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:08,040 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:19:08,040 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:19:08,040 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:19:08,040 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:19:08,040 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:19:08,041 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:19:08,041 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:19:08,041 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:19:08,041 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:19:08,041 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:19:08,041 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:19:08,041 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:19:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:19:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:19:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:19:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:19:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:19:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:19:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:19:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:19:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:19:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:19:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:19:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:19:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:19:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:19:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:19:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:19:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:19:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:19:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:19:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:19:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:19:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:19:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:19:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:19:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:19:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:19:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:19:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:19:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:19:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:19:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:19:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:19:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:19:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:19:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:19:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:19:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:19:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:19:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:19:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:19:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:19:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:19:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:19:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:19:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:19:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:19:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:19:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:19:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:19:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:19:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:19:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:19:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:19:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:19:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:19:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:19:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:19:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:19:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:19:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:19:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:19:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:19:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:19:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:19:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:19:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:19:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:19:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:19:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:19:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:19:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:19:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:19:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:19:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:19:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:19:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:19:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:19:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:19:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:19:08,054 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:19:08,054 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:08,054 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:08,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:19:08,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:19:08,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:19:10,469 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:19:10,470 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:19:10,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:10 BoogieIcfgContainer [2019-10-13 21:19:10,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:19:10,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:19:10,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:19:10,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:19:10,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:19:06" (1/3) ... [2019-10-13 21:19:10,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b4c05f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:10, skipping insertion in model container [2019-10-13 21:19:10,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:07" (2/3) ... [2019-10-13 21:19:10,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b4c05f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:10, skipping insertion in model container [2019-10-13 21:19:10,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:10" (3/3) ... [2019-10-13 21:19:10,481 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product29.cil.c [2019-10-13 21:19:10,491 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:19:10,501 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:19:10,514 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:19:10,545 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:19:10,546 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:19:10,546 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:19:10,546 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:19:10,546 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:19:10,546 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:19:10,546 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:19:10,547 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:19:10,579 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states. [2019-10-13 21:19:10,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-13 21:19:10,601 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:10,602 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:10,605 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:10,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:10,612 INFO L82 PathProgramCache]: Analyzing trace with hash 584994227, now seen corresponding path program 1 times [2019-10-13 21:19:10,623 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:10,623 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164349389] [2019-10-13 21:19:10,624 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,624 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:11,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164349389] [2019-10-13 21:19:11,269 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:11,270 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:19:11,270 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277346702] [2019-10-13 21:19:11,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:19:11,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:11,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:19:11,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:19:11,296 INFO L87 Difference]: Start difference. First operand 606 states. Second operand 2 states. [2019-10-13 21:19:11,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:11,417 INFO L93 Difference]: Finished difference Result 853 states and 1161 transitions. [2019-10-13 21:19:11,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:19:11,419 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 167 [2019-10-13 21:19:11,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:11,454 INFO L225 Difference]: With dead ends: 853 [2019-10-13 21:19:11,454 INFO L226 Difference]: Without dead ends: 549 [2019-10-13 21:19:11,465 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 21:19:11,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2019-10-13 21:19:11,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2019-10-13 21:19:11,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2019-10-13 21:19:11,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 752 transitions. [2019-10-13 21:19:11,597 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 752 transitions. Word has length 167 [2019-10-13 21:19:11,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:11,599 INFO L462 AbstractCegarLoop]: Abstraction has 549 states and 752 transitions. [2019-10-13 21:19:11,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:19:11,600 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 752 transitions. [2019-10-13 21:19:11,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-13 21:19:11,610 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:11,610 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:11,610 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:11,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:11,611 INFO L82 PathProgramCache]: Analyzing trace with hash 758057620, now seen corresponding path program 1 times [2019-10-13 21:19:11,611 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:11,611 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627434815] [2019-10-13 21:19:11,612 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:11,612 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:11,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:11,950 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627434815] [2019-10-13 21:19:11,950 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:11,950 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:11,951 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241973225] [2019-10-13 21:19:11,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:11,959 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:11,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:11,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:11,960 INFO L87 Difference]: Start difference. First operand 549 states and 752 transitions. Second operand 3 states. [2019-10-13 21:19:12,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:12,047 INFO L93 Difference]: Finished difference Result 836 states and 1126 transitions. [2019-10-13 21:19:12,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:12,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-10-13 21:19:12,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:12,055 INFO L225 Difference]: With dead ends: 836 [2019-10-13 21:19:12,055 INFO L226 Difference]: Without dead ends: 552 [2019-10-13 21:19:12,058 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 21:19:12,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2019-10-13 21:19:12,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 551. [2019-10-13 21:19:12,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2019-10-13 21:19:12,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 754 transitions. [2019-10-13 21:19:12,098 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 754 transitions. Word has length 168 [2019-10-13 21:19:12,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:12,098 INFO L462 AbstractCegarLoop]: Abstraction has 551 states and 754 transitions. [2019-10-13 21:19:12,098 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:12,099 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 754 transitions. [2019-10-13 21:19:12,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 21:19:12,102 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:12,102 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:12,103 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:12,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:12,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1115975232, now seen corresponding path program 1 times [2019-10-13 21:19:12,104 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:12,104 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358108892] [2019-10-13 21:19:12,104 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:12,104 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:12,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:12,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358108892] [2019-10-13 21:19:12,342 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:12,343 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:12,343 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576521193] [2019-10-13 21:19:12,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:12,348 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:12,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:12,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:12,349 INFO L87 Difference]: Start difference. First operand 551 states and 754 transitions. Second operand 3 states. [2019-10-13 21:19:12,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:12,388 INFO L93 Difference]: Finished difference Result 1078 states and 1506 transitions. [2019-10-13 21:19:12,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:12,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-10-13 21:19:12,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:12,394 INFO L225 Difference]: With dead ends: 1078 [2019-10-13 21:19:12,394 INFO L226 Difference]: Without dead ends: 592 [2019-10-13 21:19:12,396 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 21:19:12,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-10-13 21:19:12,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 591. [2019-10-13 21:19:12,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2019-10-13 21:19:12,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 823 transitions. [2019-10-13 21:19:12,422 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 823 transitions. Word has length 174 [2019-10-13 21:19:12,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:12,423 INFO L462 AbstractCegarLoop]: Abstraction has 591 states and 823 transitions. [2019-10-13 21:19:12,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:12,423 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 823 transitions. [2019-10-13 21:19:12,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 21:19:12,426 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:12,427 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:12,427 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:12,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:12,427 INFO L82 PathProgramCache]: Analyzing trace with hash 866228765, now seen corresponding path program 1 times [2019-10-13 21:19:12,428 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:12,428 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658047787] [2019-10-13 21:19:12,428 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:12,428 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:12,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:19:12,699 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658047787] [2019-10-13 21:19:12,699 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:12,699 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:12,699 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960897730] [2019-10-13 21:19:12,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:12,700 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:12,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:12,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:12,701 INFO L87 Difference]: Start difference. First operand 591 states and 823 transitions. Second operand 3 states. [2019-10-13 21:19:12,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:12,748 INFO L93 Difference]: Finished difference Result 1003 states and 1385 transitions. [2019-10-13 21:19:12,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:12,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-10-13 21:19:12,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:12,757 INFO L225 Difference]: With dead ends: 1003 [2019-10-13 21:19:12,757 INFO L226 Difference]: Without dead ends: 732 [2019-10-13 21:19:12,759 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 21:19:12,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2019-10-13 21:19:12,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 731. [2019-10-13 21:19:12,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2019-10-13 21:19:12,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1020 transitions. [2019-10-13 21:19:12,804 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1020 transitions. Word has length 175 [2019-10-13 21:19:12,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:12,805 INFO L462 AbstractCegarLoop]: Abstraction has 731 states and 1020 transitions. [2019-10-13 21:19:12,805 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:12,805 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1020 transitions. [2019-10-13 21:19:12,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2019-10-13 21:19:12,812 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:12,812 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:12,813 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:12,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:12,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1738374254, now seen corresponding path program 1 times [2019-10-13 21:19:12,813 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:12,814 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317543569] [2019-10-13 21:19:12,814 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:12,814 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:12,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-10-13 21:19:13,317 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317543569] [2019-10-13 21:19:13,318 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:13,318 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:19:13,318 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078115584] [2019-10-13 21:19:13,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:19:13,319 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:13,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:19:13,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:19:13,320 INFO L87 Difference]: Start difference. First operand 731 states and 1020 transitions. Second operand 6 states. [2019-10-13 21:19:14,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:14,064 INFO L93 Difference]: Finished difference Result 1786 states and 2489 transitions. [2019-10-13 21:19:14,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:19:14,065 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 309 [2019-10-13 21:19:14,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:14,077 INFO L225 Difference]: With dead ends: 1786 [2019-10-13 21:19:14,077 INFO L226 Difference]: Without dead ends: 1413 [2019-10-13 21:19:14,079 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:19:14,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2019-10-13 21:19:14,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1402. [2019-10-13 21:19:14,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1402 states. [2019-10-13 21:19:14,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 1976 transitions. [2019-10-13 21:19:14,166 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 1976 transitions. Word has length 309 [2019-10-13 21:19:14,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:14,168 INFO L462 AbstractCegarLoop]: Abstraction has 1402 states and 1976 transitions. [2019-10-13 21:19:14,168 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:19:14,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 1976 transitions. [2019-10-13 21:19:14,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2019-10-13 21:19:14,176 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:14,176 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:14,177 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:14,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:14,177 INFO L82 PathProgramCache]: Analyzing trace with hash 807957841, now seen corresponding path program 1 times [2019-10-13 21:19:14,177 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:14,178 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050723063] [2019-10-13 21:19:14,178 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:14,178 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:14,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:14,524 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-10-13 21:19:14,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050723063] [2019-10-13 21:19:14,526 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:14,526 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:19:14,527 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583873437] [2019-10-13 21:19:14,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:19:14,528 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:14,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:19:14,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:19:14,529 INFO L87 Difference]: Start difference. First operand 1402 states and 1976 transitions. Second operand 11 states. [2019-10-13 21:19:15,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:15,030 INFO L93 Difference]: Finished difference Result 2145 states and 2965 transitions. [2019-10-13 21:19:15,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:19:15,031 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 310 [2019-10-13 21:19:15,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:15,039 INFO L225 Difference]: With dead ends: 2145 [2019-10-13 21:19:15,040 INFO L226 Difference]: Without dead ends: 1376 [2019-10-13 21:19:15,043 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:19:15,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2019-10-13 21:19:15,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1372. [2019-10-13 21:19:15,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1372 states. [2019-10-13 21:19:15,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1925 transitions. [2019-10-13 21:19:15,109 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1925 transitions. Word has length 310 [2019-10-13 21:19:15,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:15,109 INFO L462 AbstractCegarLoop]: Abstraction has 1372 states and 1925 transitions. [2019-10-13 21:19:15,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:19:15,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1925 transitions. [2019-10-13 21:19:15,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2019-10-13 21:19:15,118 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:15,119 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:15,119 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:15,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:15,120 INFO L82 PathProgramCache]: Analyzing trace with hash -494275136, now seen corresponding path program 1 times [2019-10-13 21:19:15,120 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:15,120 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36697636] [2019-10-13 21:19:15,120 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:15,120 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:15,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 21:19:15,710 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36697636] [2019-10-13 21:19:15,710 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073158330] [2019-10-13 21:19:15,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:16,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 3512 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:16,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-13 21:19:16,887 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:17,682 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:17,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:17,884 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:18,045 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:19:18,045 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:18,046 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21, 9] total 34 [2019-10-13 21:19:18,046 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058221756] [2019-10-13 21:19:18,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:19:18,047 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:18,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:19:18,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:19:18,048 INFO L87 Difference]: Start difference. First operand 1372 states and 1925 transitions. Second operand 9 states. [2019-10-13 21:19:20,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:20,426 INFO L93 Difference]: Finished difference Result 2722 states and 3830 transitions. [2019-10-13 21:19:20,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:19:20,426 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 318 [2019-10-13 21:19:20,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:20,434 INFO L225 Difference]: With dead ends: 2722 [2019-10-13 21:19:20,435 INFO L226 Difference]: Without dead ends: 1386 [2019-10-13 21:19:20,439 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 623 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=1223, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:19:20,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2019-10-13 21:19:20,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1386. [2019-10-13 21:19:20,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1386 states. [2019-10-13 21:19:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1943 transitions. [2019-10-13 21:19:20,517 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1943 transitions. Word has length 318 [2019-10-13 21:19:20,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:20,518 INFO L462 AbstractCegarLoop]: Abstraction has 1386 states and 1943 transitions. [2019-10-13 21:19:20,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:19:20,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1943 transitions. [2019-10-13 21:19:20,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2019-10-13 21:19:20,527 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:20,527 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:20,735 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:20,739 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:20,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:20,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1236992727, now seen corresponding path program 1 times [2019-10-13 21:19:20,739 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:20,740 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650965275] [2019-10-13 21:19:20,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:20,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:20,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 21:19:21,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650965275] [2019-10-13 21:19:21,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597415507] [2019-10-13 21:19:21,211 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 21:19:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:21,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 3513 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:21,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-13 21:19:22,143 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:22,834 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:22,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:19:23,030 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:23,030 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [21, 7] total 30 [2019-10-13 21:19:23,030 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753964015] [2019-10-13 21:19:23,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:19:23,032 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:23,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:19:23,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:19:23,033 INFO L87 Difference]: Start difference. First operand 1386 states and 1943 transitions. Second operand 7 states. [2019-10-13 21:19:24,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:24,260 INFO L93 Difference]: Finished difference Result 2725 states and 3839 transitions. [2019-10-13 21:19:24,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:19:24,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2019-10-13 21:19:24,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:24,273 INFO L225 Difference]: With dead ends: 2725 [2019-10-13 21:19:24,273 INFO L226 Difference]: Without dead ends: 1390 [2019-10-13 21:19:24,279 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 630 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=904, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:19:24,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2019-10-13 21:19:24,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1390. [2019-10-13 21:19:24,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1390 states. [2019-10-13 21:19:24,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1948 transitions. [2019-10-13 21:19:24,340 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1948 transitions. Word has length 319 [2019-10-13 21:19:24,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:24,341 INFO L462 AbstractCegarLoop]: Abstraction has 1390 states and 1948 transitions. [2019-10-13 21:19:24,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:19:24,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1948 transitions. [2019-10-13 21:19:24,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2019-10-13 21:19:24,350 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:24,350 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:24,559 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:24,560 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:24,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:24,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1137277641, now seen corresponding path program 1 times [2019-10-13 21:19:24,560 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:24,561 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169595517] [2019-10-13 21:19:24,561 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:24,561 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:24,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 21:19:25,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169595517] [2019-10-13 21:19:25,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13976177] [2019-10-13 21:19:25,048 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 21:19:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:25,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 3514 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:25,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-13 21:19:26,047 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:26,742 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:26,833 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:26,915 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:27,057 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:19:27,057 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:27,057 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [21] total 35 [2019-10-13 21:19:27,057 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689274361] [2019-10-13 21:19:27,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:19:27,059 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:27,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:19:27,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1093, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:27,060 INFO L87 Difference]: Start difference. First operand 1390 states and 1948 transitions. Second operand 16 states. [2019-10-13 21:19:28,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:28,738 INFO L93 Difference]: Finished difference Result 2731 states and 3838 transitions. [2019-10-13 21:19:28,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:28,739 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 320 [2019-10-13 21:19:28,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:28,748 INFO L225 Difference]: With dead ends: 2731 [2019-10-13 21:19:28,748 INFO L226 Difference]: Without dead ends: 1402 [2019-10-13 21:19:28,753 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 627 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=1353, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:19:28,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2019-10-13 21:19:28,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1400. [2019-10-13 21:19:28,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1400 states. [2019-10-13 21:19:28,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1959 transitions. [2019-10-13 21:19:28,809 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1959 transitions. Word has length 320 [2019-10-13 21:19:28,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:28,810 INFO L462 AbstractCegarLoop]: Abstraction has 1400 states and 1959 transitions. [2019-10-13 21:19:28,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:19:28,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1959 transitions. [2019-10-13 21:19:28,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2019-10-13 21:19:28,816 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:28,817 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:29,033 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:29,035 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:29,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:29,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1670893278, now seen corresponding path program 2 times [2019-10-13 21:19:29,036 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:29,036 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293364307] [2019-10-13 21:19:29,036 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:29,036 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:29,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:29,462 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-10-13 21:19:29,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293364307] [2019-10-13 21:19:29,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199376114] [2019-10-13 21:19:29,462 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 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 21:19:30,171 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:19:30,171 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:30,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:30,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-13 21:19:30,547 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:31,640 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:31,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:31,807 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-10-13 21:19:31,807 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:31,808 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [21] total 31 [2019-10-13 21:19:31,808 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939092467] [2019-10-13 21:19:31,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:19:31,809 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:31,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:19:31,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:31,810 INFO L87 Difference]: Start difference. First operand 1400 states and 1959 transitions. Second operand 12 states. [2019-10-13 21:19:33,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:33,384 INFO L93 Difference]: Finished difference Result 2722 states and 3826 transitions. [2019-10-13 21:19:33,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:19:33,385 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 321 [2019-10-13 21:19:33,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:33,396 INFO L225 Difference]: With dead ends: 2722 [2019-10-13 21:19:33,396 INFO L226 Difference]: Without dead ends: 1402 [2019-10-13 21:19:33,402 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 634 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:19:33,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2019-10-13 21:19:33,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1400. [2019-10-13 21:19:33,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1400 states. [2019-10-13 21:19:33,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1958 transitions. [2019-10-13 21:19:33,457 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1958 transitions. Word has length 321 [2019-10-13 21:19:33,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:33,457 INFO L462 AbstractCegarLoop]: Abstraction has 1400 states and 1958 transitions. [2019-10-13 21:19:33,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:19:33,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1958 transitions. [2019-10-13 21:19:33,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2019-10-13 21:19:33,463 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:33,464 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:33,673 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:33,673 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:33,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:33,674 INFO L82 PathProgramCache]: Analyzing trace with hash -108881422, now seen corresponding path program 3 times [2019-10-13 21:19:33,674 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:33,674 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094646850] [2019-10-13 21:19:33,675 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:33,675 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:33,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:34,126 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-13 21:19:34,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094646850] [2019-10-13 21:19:34,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27558193] [2019-10-13 21:19:34,127 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 21:19:34,878 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:19:34,878 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:34,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 2828 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:34,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:35,118 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-13 21:19:35,118 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:35,719 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:35,811 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:35,891 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-10-13 21:19:36,050 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:36,051 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [21] total 34 [2019-10-13 21:19:36,051 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33719139] [2019-10-13 21:19:36,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:19:36,052 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:36,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:19:36,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:19:36,053 INFO L87 Difference]: Start difference. First operand 1400 states and 1958 transitions. Second operand 15 states. [2019-10-13 21:19:38,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:38,679 INFO L93 Difference]: Finished difference Result 2729 states and 3833 transitions. [2019-10-13 21:19:38,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:38,679 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 322 [2019-10-13 21:19:38,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:38,687 INFO L225 Difference]: With dead ends: 2729 [2019-10-13 21:19:38,688 INFO L226 Difference]: Without dead ends: 1404 [2019-10-13 21:19:38,692 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 631 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=1289, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:19:38,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2019-10-13 21:19:38,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1400. [2019-10-13 21:19:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1400 states. [2019-10-13 21:19:38,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1957 transitions. [2019-10-13 21:19:38,743 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1957 transitions. Word has length 322 [2019-10-13 21:19:38,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:38,743 INFO L462 AbstractCegarLoop]: Abstraction has 1400 states and 1957 transitions. [2019-10-13 21:19:38,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:19:38,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1957 transitions. [2019-10-13 21:19:38,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2019-10-13 21:19:38,749 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:38,750 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:38,956 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:38,956 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:38,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:38,957 INFO L82 PathProgramCache]: Analyzing trace with hash -102722462, now seen corresponding path program 1 times [2019-10-13 21:19:38,957 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:38,957 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452265968] [2019-10-13 21:19:38,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:38,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:38,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:39,346 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-13 21:19:39,347 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452265968] [2019-10-13 21:19:39,347 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351272180] [2019-10-13 21:19:39,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:40,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 3517 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:40,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:40,408 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-13 21:19:40,408 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:40,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:41,040 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-10-13 21:19:41,115 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:41,115 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [21] total 30 [2019-10-13 21:19:41,116 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516647689] [2019-10-13 21:19:41,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:19:41,117 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:41,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:19:41,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:19:41,117 INFO L87 Difference]: Start difference. First operand 1400 states and 1957 transitions. Second operand 11 states.