/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec8_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:55:46,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:55:46,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:55:46,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:55:46,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:55:46,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:55:46,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:55:46,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:55:46,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:55:46,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:55:46,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:55:46,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:55:46,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:55:46,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:55:46,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:55:46,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:55:46,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:55:46,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:55:46,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:55:46,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:55:46,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:55:46,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:55:46,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:55:46,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:55:46,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:55:46,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:55:46,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:55:46,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:55:46,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:55:46,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:55:46,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:55:46,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:55:46,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:55:46,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:55:46,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:55:46,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:55:46,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:55:46,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:55:46,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:55:46,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:55:46,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:55:46,793 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:55:46,815 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:55:46,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:55:46,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:55:46,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:55:46,818 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:55:46,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:55:46,819 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:55:46,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:55:46,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:55:46,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:55:46,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:55:46,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:55:46,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:55:46,821 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:55:46,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:55:46,822 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:55:46,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:55:46,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:55:46,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:55:46,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:55:46,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:55:46,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:55:46,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:55:46,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:55:46,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:55:46,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:55:46,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:55:46,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:55:46,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:55:47,130 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:55:47,144 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:55:47,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:55:47,149 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:55:47,150 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:55:47,151 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product31.cil.c [2019-11-07 00:55:47,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d963db49d/4ff2116c3a7843c488a6645ded171de3/FLAG449f44b5f [2019-11-07 00:55:47,886 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:55:47,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product31.cil.c [2019-11-07 00:55:47,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d963db49d/4ff2116c3a7843c488a6645ded171de3/FLAG449f44b5f [2019-11-07 00:55:48,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d963db49d/4ff2116c3a7843c488a6645ded171de3 [2019-11-07 00:55:48,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:55:48,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:55:48,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:55:48,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:55:48,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:55:48,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:48" (1/1) ... [2019-11-07 00:55:48,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3189ba63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:48, skipping insertion in model container [2019-11-07 00:55:48,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:48" (1/1) ... [2019-11-07 00:55:48,140 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:55:48,231 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:55:49,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:55:49,031 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:55:49,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:55:49,338 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:55:49,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49 WrapperNode [2019-11-07 00:55:49,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:55:49,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:55:49,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:55:49,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:55:49,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49" (1/1) ... [2019-11-07 00:55:49,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49" (1/1) ... [2019-11-07 00:55:49,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49" (1/1) ... [2019-11-07 00:55:49,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49" (1/1) ... [2019-11-07 00:55:49,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49" (1/1) ... [2019-11-07 00:55:49,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49" (1/1) ... [2019-11-07 00:55:49,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49" (1/1) ... [2019-11-07 00:55:49,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:55:49,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:55:49,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:55:49,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:55:49,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:55:49,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:55:49,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:55:49,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:55:49,631 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:55:49,631 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:55:49,631 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:55:49,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:55:49,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:55:49,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:55:49,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:55:49,632 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:55:49,633 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:55:49,633 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:55:49,633 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:55:49,633 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:55:49,633 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:55:49,634 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:55:49,634 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:55:49,634 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:55:49,636 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:55:49,636 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:55:49,636 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:55:49,636 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:55:49,637 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:55:49,637 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:55:49,637 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:55:49,637 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:55:49,637 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:55:49,637 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:55:49,638 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:55:49,638 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:55:49,638 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:55:49,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:55:49,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:55:49,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:55:49,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:55:49,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:55:49,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:55:49,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:55:49,639 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:55:49,640 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:55:49,640 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-11-07 00:55:49,640 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:55:49,640 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:55:49,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:55:49,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:55:49,640 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:55:49,641 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:55:49,641 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:55:49,641 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:55:49,641 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:55:49,641 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:55:49,641 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:55:49,641 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:55:49,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:55:49,642 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:55:49,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:55:49,642 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:55:49,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:55:49,642 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:55:49,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:55:49,643 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:55:49,644 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:55:49,644 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:55:49,644 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:55:49,644 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:55:49,645 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:55:49,645 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:55:49,645 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:55:49,645 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:55:49,645 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:55:49,646 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:55:49,646 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:55:49,647 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:55:49,647 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:55:49,647 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-11-07 00:55:49,647 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:55:49,647 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:55:49,648 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:55:49,649 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:55:49,649 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:55:49,649 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:55:49,650 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:55:49,650 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:55:49,651 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:55:49,651 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:55:49,651 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:55:49,652 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:55:49,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:55:49,653 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:55:49,653 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:55:49,653 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:55:49,653 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:55:49,653 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:55:49,653 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:55:49,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:55:49,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:55:49,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:55:49,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:55:49,654 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:55:49,654 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:55:49,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:55:49,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:55:49,655 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:55:49,655 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:55:49,655 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:55:49,655 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:55:49,655 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:55:49,656 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:55:49,656 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:55:49,656 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:55:49,656 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:55:49,656 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:55:49,656 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:55:49,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-11-07 00:55:49,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-11-07 00:55:49,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:55:49,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:55:49,657 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:55:49,658 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:55:49,658 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:55:49,658 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:55:49,659 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:55:49,659 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:55:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:55:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:55:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:55:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:55:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:55:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:55:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:55:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:55:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:55:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:55:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:55:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:55:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:55:49,667 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:55:49,668 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:55:49,668 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:55:49,668 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:55:49,668 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:55:49,669 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:55:49,669 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:55:49,678 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:55:49,678 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:55:49,678 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:55:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:55:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:55:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:55:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:55:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:55:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:55:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:55:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:55:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:55:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:55:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:55:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:55:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:55:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:55:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:55:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:55:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:55:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:55:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:55:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:55:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:55:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:55:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:55:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:55:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:55:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:55:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:55:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:55:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:55:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:55:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:55:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:55:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:55:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:55:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:55:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-11-07 00:55:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:55:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:55:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:55:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:55:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:55:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:55:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:55:49,687 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:55:49,687 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:55:49,687 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:55:49,687 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:55:49,687 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:55:49,688 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:55:49,688 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:55:49,688 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:55:49,688 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:55:49,688 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:55:49,689 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:55:49,689 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:55:49,689 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:55:49,689 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:55:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:55:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:55:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:55:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:55:49,692 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:55:49,692 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:55:49,693 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:55:49,693 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:55:49,693 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:55:49,693 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:55:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:55:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:55:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-11-07 00:55:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:55:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-11-07 00:55:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:55:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:55:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:55:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-11-07 00:55:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:55:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:55:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:55:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:55:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:55:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:55:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:55:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:55:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:55:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:55:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:55:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:55:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:55:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:55:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:55:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:55:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:55:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:55:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:55:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:55:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:55:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:55:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:55:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:55:51,880 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:55:51,881 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:55:51,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:51 BoogieIcfgContainer [2019-11-07 00:55:51,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:55:51,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:55:51,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:55:51,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:55:51,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:55:48" (1/3) ... [2019-11-07 00:55:51,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b926dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:51, skipping insertion in model container [2019-11-07 00:55:51,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:49" (2/3) ... [2019-11-07 00:55:51,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b926dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:51, skipping insertion in model container [2019-11-07 00:55:51,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:51" (3/3) ... [2019-11-07 00:55:51,892 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product31.cil.c [2019-11-07 00:55:51,903 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:55:51,913 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:55:51,925 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:55:51,967 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:55:51,971 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:55:51,971 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:55:51,971 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:55:51,971 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:55:51,971 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:55:51,971 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:55:51,972 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:55:52,010 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states. [2019-11-07 00:55:52,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-11-07 00:55:52,043 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:52,045 INFO L410 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] [2019-11-07 00:55:52,047 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:52,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:52,055 INFO L82 PathProgramCache]: Analyzing trace with hash 718074113, now seen corresponding path program 1 times [2019-11-07 00:55:52,065 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:52,066 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748635287] [2019-11-07 00:55:52,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:52,712 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:55:52,713 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748635287] [2019-11-07 00:55:52,714 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:52,714 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:55:52,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661383707] [2019-11-07 00:55:52,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:55:52,724 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:52,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:55:52,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:55:52,742 INFO L87 Difference]: Start difference. First operand 562 states. Second operand 2 states. [2019-11-07 00:55:52,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:52,824 INFO L93 Difference]: Finished difference Result 866 states and 1134 transitions. [2019-11-07 00:55:52,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:55:52,826 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 158 [2019-11-07 00:55:52,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:52,863 INFO L225 Difference]: With dead ends: 866 [2019-11-07 00:55:52,864 INFO L226 Difference]: Without dead ends: 539 [2019-11-07 00:55:52,877 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:55:52,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2019-11-07 00:55:53,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2019-11-07 00:55:53,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2019-11-07 00:55:53,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 711 transitions. [2019-11-07 00:55:53,028 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 711 transitions. Word has length 158 [2019-11-07 00:55:53,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:53,031 INFO L462 AbstractCegarLoop]: Abstraction has 539 states and 711 transitions. [2019-11-07 00:55:53,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:55:53,031 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 711 transitions. [2019-11-07 00:55:53,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-11-07 00:55:53,042 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:53,042 INFO L410 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] [2019-11-07 00:55:53,042 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:53,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:53,043 INFO L82 PathProgramCache]: Analyzing trace with hash 95900195, now seen corresponding path program 1 times [2019-11-07 00:55:53,043 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:53,043 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160197047] [2019-11-07 00:55:53,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:55:53,323 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160197047] [2019-11-07 00:55:53,323 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:53,324 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:55:53,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965260753] [2019-11-07 00:55:53,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:55:53,339 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:53,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:55:53,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:53,340 INFO L87 Difference]: Start difference. First operand 539 states and 711 transitions. Second operand 3 states. [2019-11-07 00:55:53,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:53,434 INFO L93 Difference]: Finished difference Result 849 states and 1102 transitions. [2019-11-07 00:55:53,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:55:53,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-11-07 00:55:53,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:53,440 INFO L225 Difference]: With dead ends: 849 [2019-11-07 00:55:53,441 INFO L226 Difference]: Without dead ends: 542 [2019-11-07 00:55:53,443 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:53,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2019-11-07 00:55:53,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 541. [2019-11-07 00:55:53,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2019-11-07 00:55:53,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 713 transitions. [2019-11-07 00:55:53,473 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 713 transitions. Word has length 159 [2019-11-07 00:55:53,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:53,474 INFO L462 AbstractCegarLoop]: Abstraction has 541 states and 713 transitions. [2019-11-07 00:55:53,474 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:55:53,474 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 713 transitions. [2019-11-07 00:55:53,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-11-07 00:55:53,477 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:53,478 INFO L410 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] [2019-11-07 00:55:53,478 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:53,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:53,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1408661417, now seen corresponding path program 1 times [2019-11-07 00:55:53,479 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:53,479 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073166927] [2019-11-07 00:55:53,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:53,685 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:55:53,685 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073166927] [2019-11-07 00:55:53,685 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:53,686 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:55:53,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847101100] [2019-11-07 00:55:53,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:55:53,689 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:53,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:55:53,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:53,690 INFO L87 Difference]: Start difference. First operand 541 states and 713 transitions. Second operand 3 states. [2019-11-07 00:55:53,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:53,742 INFO L93 Difference]: Finished difference Result 1058 states and 1424 transitions. [2019-11-07 00:55:53,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:55:53,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-11-07 00:55:53,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:53,748 INFO L225 Difference]: With dead ends: 1058 [2019-11-07 00:55:53,748 INFO L226 Difference]: Without dead ends: 582 [2019-11-07 00:55:53,750 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:53,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2019-11-07 00:55:53,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 581. [2019-11-07 00:55:53,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2019-11-07 00:55:53,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 782 transitions. [2019-11-07 00:55:53,776 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 782 transitions. Word has length 165 [2019-11-07 00:55:53,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:53,777 INFO L462 AbstractCegarLoop]: Abstraction has 581 states and 782 transitions. [2019-11-07 00:55:53,777 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:55:53,777 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 782 transitions. [2019-11-07 00:55:53,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-07 00:55:53,781 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:53,781 INFO L410 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] [2019-11-07 00:55:53,781 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:53,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:53,782 INFO L82 PathProgramCache]: Analyzing trace with hash 476194519, now seen corresponding path program 1 times [2019-11-07 00:55:53,782 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:53,782 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258634802] [2019-11-07 00:55:53,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:55:54,133 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258634802] [2019-11-07 00:55:54,133 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:54,133 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:55:54,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208097396] [2019-11-07 00:55:54,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:55:54,135 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:54,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:55:54,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:54,136 INFO L87 Difference]: Start difference. First operand 581 states and 782 transitions. Second operand 3 states. [2019-11-07 00:55:54,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:54,196 INFO L93 Difference]: Finished difference Result 979 states and 1302 transitions. [2019-11-07 00:55:54,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:55:54,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2019-11-07 00:55:54,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:54,207 INFO L225 Difference]: With dead ends: 979 [2019-11-07 00:55:54,207 INFO L226 Difference]: Without dead ends: 674 [2019-11-07 00:55:54,209 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:54,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2019-11-07 00:55:54,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2019-11-07 00:55:54,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2019-11-07 00:55:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 905 transitions. [2019-11-07 00:55:54,260 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 905 transitions. Word has length 166 [2019-11-07 00:55:54,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:54,261 INFO L462 AbstractCegarLoop]: Abstraction has 674 states and 905 transitions. [2019-11-07 00:55:54,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:55:54,261 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 905 transitions. [2019-11-07 00:55:54,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2019-11-07 00:55:54,273 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:54,274 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:54,274 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:54,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:54,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1063434513, now seen corresponding path program 1 times [2019-11-07 00:55:54,275 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:54,276 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977734774] [2019-11-07 00:55:54,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-11-07 00:55:54,922 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977734774] [2019-11-07 00:55:54,922 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711792238] [2019-11-07 00:55:54,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:55,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 3484 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:55:55,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:55:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-11-07 00:55:56,268 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:55:57,018 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:55:57,134 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:57,240 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:57,472 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-11-07 00:55:57,473 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:55:57,473 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-11-07 00:55:57,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064697042] [2019-11-07 00:55:57,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:55:57,475 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:57,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:55:57,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:55:57,477 INFO L87 Difference]: Start difference. First operand 674 states and 905 transitions. Second operand 9 states. [2019-11-07 00:55:58,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:58,934 INFO L93 Difference]: Finished difference Result 1326 states and 1790 transitions. [2019-11-07 00:55:58,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:55:58,934 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 309 [2019-11-07 00:55:58,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:58,939 INFO L225 Difference]: With dead ends: 1326 [2019-11-07 00:55:58,940 INFO L226 Difference]: Without dead ends: 688 [2019-11-07 00:55:58,943 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 607 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:55:58,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2019-11-07 00:55:58,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2019-11-07 00:55:58,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2019-11-07 00:55:58,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 923 transitions. [2019-11-07 00:55:58,980 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 923 transitions. Word has length 309 [2019-11-07 00:55:58,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:58,981 INFO L462 AbstractCegarLoop]: Abstraction has 688 states and 923 transitions. [2019-11-07 00:55:58,981 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:55:58,981 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 923 transitions. [2019-11-07 00:55:58,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2019-11-07 00:55:58,988 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:58,989 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:59,201 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:59,201 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:59,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:59,203 INFO L82 PathProgramCache]: Analyzing trace with hash -343580685, now seen corresponding path program 1 times [2019-11-07 00:55:59,203 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:59,203 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748947814] [2019-11-07 00:55:59,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:59,794 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-11-07 00:55:59,794 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748947814] [2019-11-07 00:55:59,795 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441924142] [2019-11-07 00:55:59,795 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 [2019-11-07 00:56:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:00,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 3485 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:56:00,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-11-07 00:56:00,699 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:01,315 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:01,382 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-11-07 00:56:01,511 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:56:01,511 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-11-07 00:56:01,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207917847] [2019-11-07 00:56:01,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:56:01,512 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:01,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:56:01,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:56:01,513 INFO L87 Difference]: Start difference. First operand 688 states and 923 transitions. Second operand 7 states. [2019-11-07 00:56:02,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:02,566 INFO L93 Difference]: Finished difference Result 1327 states and 1794 transitions. [2019-11-07 00:56:02,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:56:02,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2019-11-07 00:56:02,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:02,571 INFO L225 Difference]: With dead ends: 1327 [2019-11-07 00:56:02,571 INFO L226 Difference]: Without dead ends: 690 [2019-11-07 00:56:02,574 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 614 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 00:56:02,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-11-07 00:56:02,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2019-11-07 00:56:02,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2019-11-07 00:56:02,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 926 transitions. [2019-11-07 00:56:02,602 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 926 transitions. Word has length 310 [2019-11-07 00:56:02,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:02,603 INFO L462 AbstractCegarLoop]: Abstraction has 690 states and 926 transitions. [2019-11-07 00:56:02,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:56:02,603 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 926 transitions. [2019-11-07 00:56:02,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2019-11-07 00:56:02,610 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:02,610 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:02,820 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:02,820 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:02,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:02,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1252874735, now seen corresponding path program 1 times [2019-11-07 00:56:02,821 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:02,821 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3058834] [2019-11-07 00:56:02,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:03,366 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-11-07 00:56:03,367 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3058834] [2019-11-07 00:56:03,367 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119241662] [2019-11-07 00:56:03,367 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 [2019-11-07 00:56:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:04,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 3486 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:56:04,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:04,532 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-11-07 00:56:04,533 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:05,173 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:56:05,274 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:05,361 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-11-07 00:56:05,573 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:56:05,573 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-11-07 00:56:05,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785802826] [2019-11-07 00:56:05,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:56:05,575 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:05,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:56:05,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-11-07 00:56:05,576 INFO L87 Difference]: Start difference. First operand 690 states and 926 transitions. Second operand 16 states. [2019-11-07 00:56:07,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:07,640 INFO L93 Difference]: Finished difference Result 1331 states and 1794 transitions. [2019-11-07 00:56:07,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:56:07,641 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 311 [2019-11-07 00:56:07,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:07,646 INFO L225 Difference]: With dead ends: 1331 [2019-11-07 00:56:07,646 INFO L226 Difference]: Without dead ends: 702 [2019-11-07 00:56:07,649 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 611 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-11-07 00:56:07,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-11-07 00:56:07,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 700. [2019-11-07 00:56:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-11-07 00:56:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 937 transitions. [2019-11-07 00:56:07,676 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 937 transitions. Word has length 311 [2019-11-07 00:56:07,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:07,676 INFO L462 AbstractCegarLoop]: Abstraction has 700 states and 937 transitions. [2019-11-07 00:56:07,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:56:07,677 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 937 transitions. [2019-11-07 00:56:07,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2019-11-07 00:56:07,682 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:07,683 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:07,891 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:07,891 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:07,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:07,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2090674233, now seen corresponding path program 2 times [2019-11-07 00:56:07,892 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:07,893 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115583112] [2019-11-07 00:56:07,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:08,422 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-11-07 00:56:08,424 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115583112] [2019-11-07 00:56:08,425 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580535854] [2019-11-07 00:56:08,425 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 [2019-11-07 00:56:09,175 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:56:09,176 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:56:09,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 2440 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:56:09,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:09,393 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-11-07 00:56:09,393 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:09,929 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:10,007 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-11-07 00:56:10,162 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:56:10,162 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-11-07 00:56:10,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299165404] [2019-11-07 00:56:10,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:56:10,164 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:10,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:56:10,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:56:10,166 INFO L87 Difference]: Start difference. First operand 700 states and 937 transitions. Second operand 12 states. [2019-11-07 00:56:11,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:11,762 INFO L93 Difference]: Finished difference Result 1322 states and 1782 transitions. [2019-11-07 00:56:11,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:56:11,762 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 312 [2019-11-07 00:56:11,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:11,766 INFO L225 Difference]: With dead ends: 1322 [2019-11-07 00:56:11,766 INFO L226 Difference]: Without dead ends: 702 [2019-11-07 00:56:11,769 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 618 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:56:11,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-11-07 00:56:11,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 700. [2019-11-07 00:56:11,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-11-07 00:56:11,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 936 transitions. [2019-11-07 00:56:11,797 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 936 transitions. Word has length 312 [2019-11-07 00:56:11,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:11,798 INFO L462 AbstractCegarLoop]: Abstraction has 700 states and 936 transitions. [2019-11-07 00:56:11,798 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:56:11,798 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 936 transitions. [2019-11-07 00:56:11,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2019-11-07 00:56:11,810 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:11,811 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:12,020 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:12,021 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:12,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:12,022 INFO L82 PathProgramCache]: Analyzing trace with hash 443053049, now seen corresponding path program 3 times [2019-11-07 00:56:12,022 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:12,022 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868249950] [2019-11-07 00:56:12,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-11-07 00:56:12,498 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868249950] [2019-11-07 00:56:12,499 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795703127] [2019-11-07 00:56:12,499 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 [2019-11-07 00:56:13,572 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-07 00:56:13,572 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:56:13,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:56:13,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-11-07 00:56:13,942 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:14,623 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:56:14,712 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:14,806 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:14,968 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-11-07 00:56:14,968 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:56:14,968 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-11-07 00:56:14,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097080733] [2019-11-07 00:56:14,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:56:14,970 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:14,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:56:14,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:56:14,971 INFO L87 Difference]: Start difference. First operand 700 states and 936 transitions. Second operand 15 states. [2019-11-07 00:56:17,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:17,111 INFO L93 Difference]: Finished difference Result 1329 states and 1789 transitions. [2019-11-07 00:56:17,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:56:17,112 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 313 [2019-11-07 00:56:17,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:17,116 INFO L225 Difference]: With dead ends: 1329 [2019-11-07 00:56:17,116 INFO L226 Difference]: Without dead ends: 704 [2019-11-07 00:56:17,118 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 615 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-11-07 00:56:17,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2019-11-07 00:56:17,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 700. [2019-11-07 00:56:17,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-11-07 00:56:17,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 935 transitions. [2019-11-07 00:56:17,145 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 935 transitions. Word has length 313 [2019-11-07 00:56:17,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:17,145 INFO L462 AbstractCegarLoop]: Abstraction has 700 states and 935 transitions. [2019-11-07 00:56:17,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:56:17,145 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 935 transitions. [2019-11-07 00:56:17,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2019-11-07 00:56:17,150 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:17,150 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:17,365 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:17,365 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:17,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:17,366 INFO L82 PathProgramCache]: Analyzing trace with hash -616805140, now seen corresponding path program 1 times [2019-11-07 00:56:17,366 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:17,366 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359578778] [2019-11-07 00:56:17,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:17,851 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-11-07 00:56:17,852 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359578778] [2019-11-07 00:56:17,852 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236310679] [2019-11-07 00:56:17,852 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 [2019-11-07 00:56:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:18,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 3489 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:56:18,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-11-07 00:56:18,896 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:19,554 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:19,636 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:19,731 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-11-07 00:56:19,731 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:56:19,732 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 31 [2019-11-07 00:56:19,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103218623] [2019-11-07 00:56:19,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:56:19,736 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:19,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:56:19,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:56:19,737 INFO L87 Difference]: Start difference. First operand 700 states and 935 transitions. Second operand 11 states. [2019-11-07 00:56:21,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:21,866 INFO L93 Difference]: Finished difference Result 1326 states and 1786 transitions. [2019-11-07 00:56:21,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:56:21,867 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 314 [2019-11-07 00:56:21,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:21,872 INFO L225 Difference]: With dead ends: 1326 [2019-11-07 00:56:21,873 INFO L226 Difference]: Without dead ends: 706 [2019-11-07 00:56:21,875 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 622 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2019-11-07 00:56:21,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2019-11-07 00:56:21,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 702. [2019-11-07 00:56:21,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2019-11-07 00:56:21,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 938 transitions. [2019-11-07 00:56:21,902 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 938 transitions. Word has length 314 [2019-11-07 00:56:21,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:21,902 INFO L462 AbstractCegarLoop]: Abstraction has 702 states and 938 transitions. [2019-11-07 00:56:21,903 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:56:21,903 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 938 transitions. [2019-11-07 00:56:21,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2019-11-07 00:56:21,906 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:21,907 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]