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_spec27_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:14:15,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:14:15,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:14:15,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:14:15,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:14:15,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:14:15,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:14:15,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:14:15,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:14:15,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:14:15,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:14:15,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:14:15,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:14:15,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:14:15,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:14:15,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:14:15,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:14:15,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:14:15,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:14:15,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:14:15,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:14:15,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:14:15,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:14:15,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:14:15,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:14:15,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:14:15,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:14:15,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:14:15,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:14:15,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:14:15,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:14:15,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:14:15,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:14:15,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:14:15,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:14:15,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:14:15,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:14:15,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:14:15,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:14:15,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:14:15,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:14:15,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:14:15,745 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:14:15,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:14:15,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:14:15,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:14:15,747 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:14:15,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:14:15,747 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:14:15,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:14:15,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:14:15,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:14:15,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:14:15,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:14:15,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:14:15,749 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:14:15,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:14:15,749 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:14:15,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:14:15,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:14:15,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:14:15,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:14:15,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:14:15,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:15,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:14:15,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:14:15,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:14:15,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:14:15,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:14:15,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:14:15,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:14:16,038 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:14:16,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:14:16,057 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:14:16,058 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:14:16,059 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:14:16,060 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product31.cil.c [2019-10-15 01:14:16,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fd781646/534a98953740421e9cb8e7f5892d5c09/FLAG88f81afc3 [2019-10-15 01:14:16,818 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:14:16,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product31.cil.c [2019-10-15 01:14:16,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fd781646/534a98953740421e9cb8e7f5892d5c09/FLAG88f81afc3 [2019-10-15 01:14:16,974 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fd781646/534a98953740421e9cb8e7f5892d5c09 [2019-10-15 01:14:16,984 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:14:16,985 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:14:16,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:16,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:14:16,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:14:16,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:16" (1/1) ... [2019-10-15 01:14:16,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2837cd28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:16, skipping insertion in model container [2019-10-15 01:14:16,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:16" (1/1) ... [2019-10-15 01:14:16,998 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:14:17,077 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:14:17,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:17,940 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:14:18,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:18,174 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:14:18,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:18 WrapperNode [2019-10-15 01:14:18,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:18,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:14:18,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:14:18,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:14:18,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:18" (1/1) ... [2019-10-15 01:14:18,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:18" (1/1) ... [2019-10-15 01:14:18,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:18" (1/1) ... [2019-10-15 01:14:18,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:18" (1/1) ... [2019-10-15 01:14:18,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:18" (1/1) ... [2019-10-15 01:14:18,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:18" (1/1) ... [2019-10-15 01:14:18,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:18" (1/1) ... [2019-10-15 01:14:18,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:14:18,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:14:18,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:14:18,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:14:18,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:18,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:14:18,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:14:18,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:18,484 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:14:18,484 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:14:18,485 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:18,485 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:14:18,485 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:18,485 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:14:18,486 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:14:18,486 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:14:18,487 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:14:18,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:14:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:14:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:14:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:14:18,490 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:14:18,491 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:14:18,491 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:14:18,491 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:14:18,491 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:14:18,492 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:14:18,492 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:14:18,492 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:14:18,492 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:14:18,492 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:14:18,493 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:14:18,493 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:14:18,493 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:14:18,493 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:14:18,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:14:18,495 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:14:18,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:14:18,495 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:14:18,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:14:18,496 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:14:18,496 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:14:18,496 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:14:18,497 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:14:18,497 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:14:18,497 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:14:18,497 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:14:18,497 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:14:18,498 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:14:18,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:14:18,498 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:14:18,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:14:18,498 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:14:18,499 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:14:18,499 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:14:18,499 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:14:18,499 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:14:18,499 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:14:18,500 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:14:18,500 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:14:18,500 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:14:18,500 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:14:18,500 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:14:18,500 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:14:18,501 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:14:18,501 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:14:18,501 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:14:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:14:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:14:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:14:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:14:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:14:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:14:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:14:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:14:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:14:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:14:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:14:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:14:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:14:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:14:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:14:18,506 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:14:18,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:14:18,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:18,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:18,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:18,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:14:18,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:14:18,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:14:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:14:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:14:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:14:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-15 01:14:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:14:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:14:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:14:18,510 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:14:18,510 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:14:18,510 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:14:18,510 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:14:18,510 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:14:18,510 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:14:18,510 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:14:18,511 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:14:18,511 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:14:18,511 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:14:18,511 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:14:18,511 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:14:18,511 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:14:18,511 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:14:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:14:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:14:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-10-15 01:14:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:14:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:14:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:14:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:14:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:14:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:14:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:14:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:14:18,514 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:14:18,514 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:14:18,514 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:14:18,514 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:14:18,515 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:14:18,515 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:14:18,515 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:14:18,516 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:14:18,516 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:14:18,516 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:14:18,516 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:14:18,516 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:14:18,516 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:14:18,517 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:14:18,517 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:14:18,517 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:14:18,517 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:14:18,518 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:14:18,518 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:14:18,519 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:14:18,522 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:14:18,522 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:14:18,522 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:14:18,523 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:14:18,523 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:14:18,523 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:14:18,524 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:14:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:14:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:14:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:14:18,530 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:14:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:14:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:14:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:14:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:14:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:14:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:14:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:14:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:14:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:14:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:14:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:14:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:14:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:14:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:14:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:14:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:14:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:14:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:14:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:14:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:14:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:14:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:14:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:14:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:14:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:14:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:14:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:14:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:14:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:14:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:14:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:14:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:14:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:14:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:14:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:14:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:14:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:14:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:14:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:14:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:14:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:14:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:14:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:14:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:14:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:14:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:14:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:14:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:14:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:14:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:14:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:14:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:14:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:14:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:14:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:14:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:14:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:14:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:14:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:14:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:14:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:18,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:14:18,540 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:18,540 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:18,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:14:18,540 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:14:18,540 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:14:18,540 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:14:18,540 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:14:18,541 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:14:18,541 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:14:18,541 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:14:18,541 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:14:18,541 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:14:18,541 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:14:18,541 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:14:18,542 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:14:18,542 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:14:18,542 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:14:18,542 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:14:18,542 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:14:18,542 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:14:18,542 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-15 01:14:18,543 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:14:18,543 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:14:18,543 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:14:18,543 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:14:18,543 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:14:18,543 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-10-15 01:14:18,543 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:14:18,544 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:14:18,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:14:18,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:14:18,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:14:20,804 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:14:20,804 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:14:20,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:20 BoogieIcfgContainer [2019-10-15 01:14:20,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:14:20,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:14:20,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:14:20,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:14:20,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:14:16" (1/3) ... [2019-10-15 01:14:20,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a248c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:20, skipping insertion in model container [2019-10-15 01:14:20,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:18" (2/3) ... [2019-10-15 01:14:20,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a248c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:20, skipping insertion in model container [2019-10-15 01:14:20,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:20" (3/3) ... [2019-10-15 01:14:20,816 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product31.cil.c [2019-10-15 01:14:20,826 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:14:20,843 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:14:20,858 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:14:20,912 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:14:20,913 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:14:20,914 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:14:20,917 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:14:20,917 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:14:20,918 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:14:20,918 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:14:20,918 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:14:20,961 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states. [2019-10-15 01:14:21,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-10-15 01:14:21,003 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:21,007 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:14:21,012 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:21,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:21,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1257961618, now seen corresponding path program 1 times [2019-10-15 01:14:21,032 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:21,033 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807324989] [2019-10-15 01:14:21,033 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:21,034 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:21,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:21,836 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807324989] [2019-10-15 01:14:21,837 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:21,838 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:14:21,838 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360608867] [2019-10-15 01:14:21,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:14:21,846 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:21,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:14:21,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:14:21,864 INFO L87 Difference]: Start difference. First operand 560 states. Second operand 2 states. [2019-10-15 01:14:21,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:21,972 INFO L93 Difference]: Finished difference Result 862 states and 1137 transitions. [2019-10-15 01:14:21,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:14:21,974 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 211 [2019-10-15 01:14:21,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:22,004 INFO L225 Difference]: With dead ends: 862 [2019-10-15 01:14:22,004 INFO L226 Difference]: Without dead ends: 537 [2019-10-15 01:14:22,019 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:14:22,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2019-10-15 01:14:22,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2019-10-15 01:14:22,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-10-15 01:14:22,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 710 transitions. [2019-10-15 01:14:22,133 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 710 transitions. Word has length 211 [2019-10-15 01:14:22,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:22,136 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 710 transitions. [2019-10-15 01:14:22,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:14:22,136 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 710 transitions. [2019-10-15 01:14:22,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-15 01:14:22,142 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:22,143 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:14:22,143 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:22,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:22,143 INFO L82 PathProgramCache]: Analyzing trace with hash 836943149, now seen corresponding path program 1 times [2019-10-15 01:14:22,144 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:22,144 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913602323] [2019-10-15 01:14:22,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:22,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:22,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:22,498 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:22,499 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913602323] [2019-10-15 01:14:22,499 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:22,499 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:22,500 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984762243] [2019-10-15 01:14:22,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:22,502 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:22,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:22,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:22,503 INFO L87 Difference]: Start difference. First operand 537 states and 710 transitions. Second operand 3 states. [2019-10-15 01:14:22,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:22,569 INFO L93 Difference]: Finished difference Result 845 states and 1100 transitions. [2019-10-15 01:14:22,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:22,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 212 [2019-10-15 01:14:22,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:22,577 INFO L225 Difference]: With dead ends: 845 [2019-10-15 01:14:22,580 INFO L226 Difference]: Without dead ends: 540 [2019-10-15 01:14:22,583 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:22,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2019-10-15 01:14:22,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 539. [2019-10-15 01:14:22,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2019-10-15 01:14:22,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 712 transitions. [2019-10-15 01:14:22,645 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 712 transitions. Word has length 212 [2019-10-15 01:14:22,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:22,649 INFO L462 AbstractCegarLoop]: Abstraction has 539 states and 712 transitions. [2019-10-15 01:14:22,650 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:22,650 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 712 transitions. [2019-10-15 01:14:22,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-15 01:14:22,655 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:22,656 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:22,656 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:22,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:22,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1845626649, now seen corresponding path program 1 times [2019-10-15 01:14:22,657 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:22,657 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553129816] [2019-10-15 01:14:22,658 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:22,658 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:22,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:22,890 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:22,891 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553129816] [2019-10-15 01:14:22,891 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:22,891 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:22,892 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967102712] [2019-10-15 01:14:22,894 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:22,897 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:22,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:22,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:22,897 INFO L87 Difference]: Start difference. First operand 539 states and 712 transitions. Second operand 3 states. [2019-10-15 01:14:22,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:22,966 INFO L93 Difference]: Finished difference Result 1054 states and 1422 transitions. [2019-10-15 01:14:22,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:22,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2019-10-15 01:14:22,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:22,975 INFO L225 Difference]: With dead ends: 1054 [2019-10-15 01:14:22,975 INFO L226 Difference]: Without dead ends: 580 [2019-10-15 01:14:22,978 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:22,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2019-10-15 01:14:23,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 579. [2019-10-15 01:14:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-10-15 01:14:23,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 781 transitions. [2019-10-15 01:14:23,023 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 781 transitions. Word has length 218 [2019-10-15 01:14:23,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:23,024 INFO L462 AbstractCegarLoop]: Abstraction has 579 states and 781 transitions. [2019-10-15 01:14:23,024 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:23,024 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 781 transitions. [2019-10-15 01:14:23,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-10-15 01:14:23,035 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:23,036 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:14:23,039 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:23,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:23,040 INFO L82 PathProgramCache]: Analyzing trace with hash 460483544, now seen corresponding path program 1 times [2019-10-15 01:14:23,040 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:23,040 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829184546] [2019-10-15 01:14:23,041 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:23,041 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:23,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:23,603 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:23,605 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829184546] [2019-10-15 01:14:23,605 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135889950] [2019-10-15 01:14:23,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:24,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 2900 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:24,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:14:24,676 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:25,165 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:25,272 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:25,372 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:25,538 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:25,538 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:25,539 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-15 01:14:25,539 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553253163] [2019-10-15 01:14:25,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:14:25,540 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:25,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:14:25,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:14:25,541 INFO L87 Difference]: Start difference. First operand 579 states and 781 transitions. Second operand 9 states. [2019-10-15 01:14:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:27,146 INFO L93 Difference]: Finished difference Result 1136 states and 1542 transitions. [2019-10-15 01:14:27,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:14:27,147 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2019-10-15 01:14:27,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:27,154 INFO L225 Difference]: With dead ends: 1136 [2019-10-15 01:14:27,155 INFO L226 Difference]: Without dead ends: 593 [2019-10-15 01:14:27,159 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 427 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:14:27,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2019-10-15 01:14:27,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2019-10-15 01:14:27,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2019-10-15 01:14:27,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 799 transitions. [2019-10-15 01:14:27,215 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 799 transitions. Word has length 219 [2019-10-15 01:14:27,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:27,216 INFO L462 AbstractCegarLoop]: Abstraction has 593 states and 799 transitions. [2019-10-15 01:14:27,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:14:27,217 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 799 transitions. [2019-10-15 01:14:27,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-10-15 01:14:27,224 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:27,225 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:27,436 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:27,436 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:27,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:27,437 INFO L82 PathProgramCache]: Analyzing trace with hash 572253340, now seen corresponding path program 1 times [2019-10-15 01:14:27,437 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:27,437 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693825614] [2019-10-15 01:14:27,438 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:27,438 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:27,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:27,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693825614] [2019-10-15 01:14:27,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792282243] [2019-10-15 01:14:27,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:28,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 2901 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:28,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:14:28,896 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:29,285 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:29,371 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:29,438 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:29,438 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:29,439 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-15 01:14:29,439 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949058403] [2019-10-15 01:14:29,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:29,440 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:29,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:29,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:29,441 INFO L87 Difference]: Start difference. First operand 593 states and 799 transitions. Second operand 7 states. [2019-10-15 01:14:30,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:30,751 INFO L93 Difference]: Finished difference Result 1137 states and 1546 transitions. [2019-10-15 01:14:30,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:14:30,752 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2019-10-15 01:14:30,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:30,760 INFO L225 Difference]: With dead ends: 1137 [2019-10-15 01:14:30,761 INFO L226 Difference]: Without dead ends: 595 [2019-10-15 01:14:30,764 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 434 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-15 01:14:30,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-15 01:14:30,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-10-15 01:14:30,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-10-15 01:14:30,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 802 transitions. [2019-10-15 01:14:30,809 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 802 transitions. Word has length 220 [2019-10-15 01:14:30,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:30,810 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 802 transitions. [2019-10-15 01:14:30,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:30,810 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 802 transitions. [2019-10-15 01:14:30,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-10-15 01:14:30,817 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:30,818 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:31,028 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:31,029 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:31,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:31,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1312168313, now seen corresponding path program 1 times [2019-10-15 01:14:31,031 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:31,031 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390511919] [2019-10-15 01:14:31,031 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:31,031 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:31,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:31,737 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390511919] [2019-10-15 01:14:31,737 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223364173] [2019-10-15 01:14:31,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:32,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 2902 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:32,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:32,754 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:33,180 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:33,269 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:33,344 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:33,486 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:33,486 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-15 01:14:33,486 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437989437] [2019-10-15 01:14:33,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:14:33,487 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:33,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:14:33,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:14:33,488 INFO L87 Difference]: Start difference. First operand 595 states and 802 transitions. Second operand 16 states. [2019-10-15 01:14:35,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:35,719 INFO L93 Difference]: Finished difference Result 1141 states and 1546 transitions. [2019-10-15 01:14:35,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:35,720 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 221 [2019-10-15 01:14:35,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:35,726 INFO L225 Difference]: With dead ends: 1141 [2019-10-15 01:14:35,727 INFO L226 Difference]: Without dead ends: 607 [2019-10-15 01:14:35,730 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 431 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-15 01:14:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2019-10-15 01:14:35,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 605. [2019-10-15 01:14:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2019-10-15 01:14:35,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 813 transitions. [2019-10-15 01:14:35,763 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 813 transitions. Word has length 221 [2019-10-15 01:14:35,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:35,764 INFO L462 AbstractCegarLoop]: Abstraction has 605 states and 813 transitions. [2019-10-15 01:14:35,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:14:35,810 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 813 transitions. [2019-10-15 01:14:35,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-10-15 01:14:35,815 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:35,815 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:36,021 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:36,022 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:36,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:36,023 INFO L82 PathProgramCache]: Analyzing trace with hash -283937073, now seen corresponding path program 2 times [2019-10-15 01:14:36,023 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:36,023 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099992778] [2019-10-15 01:14:36,024 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:36,024 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:36,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:36,474 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:36,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099992778] [2019-10-15 01:14:36,475 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975226497] [2019-10-15 01:14:36,475 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:37,235 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:14:37,236 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:37,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 2297 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:14:37,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:37,467 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:14:37,467 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:38,140 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:38,141 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:38,141 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-15 01:14:38,141 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332045248] [2019-10-15 01:14:38,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:14:38,143 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:38,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:14:38,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:14:38,144 INFO L87 Difference]: Start difference. First operand 605 states and 813 transitions. Second operand 14 states. [2019-10-15 01:14:40,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:40,433 INFO L93 Difference]: Finished difference Result 2039 states and 2774 transitions. [2019-10-15 01:14:40,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:14:40,433 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 222 [2019-10-15 01:14:40,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:40,448 INFO L225 Difference]: With dead ends: 2039 [2019-10-15 01:14:40,448 INFO L226 Difference]: Without dead ends: 1747 [2019-10-15 01:14:40,454 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 442 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-15 01:14:40,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2019-10-15 01:14:40,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1407. [2019-10-15 01:14:40,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1407 states. [2019-10-15 01:14:40,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1953 transitions. [2019-10-15 01:14:40,541 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1953 transitions. Word has length 222 [2019-10-15 01:14:40,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:40,543 INFO L462 AbstractCegarLoop]: Abstraction has 1407 states and 1953 transitions. [2019-10-15 01:14:40,543 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:14:40,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1953 transitions. [2019-10-15 01:14:40,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2019-10-15 01:14:40,550 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:40,551 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:40,757 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:40,758 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:40,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:40,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1231802037, now seen corresponding path program 1 times [2019-10-15 01:14:40,759 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:40,759 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483346832] [2019-10-15 01:14:40,760 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:40,760 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:40,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:41,264 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483346832] [2019-10-15 01:14:41,264 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649994897] [2019-10-15 01:14:41,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:41,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 2904 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:41,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:42,122 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:42,123 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:42,475 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:42,560 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:42,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:42,783 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:42,783 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-15 01:14:42,783 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412206510] [2019-10-15 01:14:42,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:14:42,785 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:42,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:14:42,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:42,786 INFO L87 Difference]: Start difference. First operand 1407 states and 1953 transitions. Second operand 15 states. [2019-10-15 01:14:44,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:44,458 INFO L93 Difference]: Finished difference Result 2708 states and 3782 transitions. [2019-10-15 01:14:44,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:44,459 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 223 [2019-10-15 01:14:44,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:44,468 INFO L225 Difference]: With dead ends: 2708 [2019-10-15 01:14:44,468 INFO L226 Difference]: Without dead ends: 1413 [2019-10-15 01:14:44,474 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 435 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:14:44,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2019-10-15 01:14:44,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1407. [2019-10-15 01:14:44,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1407 states. [2019-10-15 01:14:44,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1951 transitions. [2019-10-15 01:14:44,537 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1951 transitions. Word has length 223 [2019-10-15 01:14:44,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:44,538 INFO L462 AbstractCegarLoop]: Abstraction has 1407 states and 1951 transitions. [2019-10-15 01:14:44,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:14:44,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1951 transitions. [2019-10-15 01:14:44,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-10-15 01:14:44,546 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:44,546 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-15 01:14:44,754 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:44,755 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:44,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:44,755 INFO L82 PathProgramCache]: Analyzing trace with hash 982754150, now seen corresponding path program 1 times [2019-10-15 01:14:44,756 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:44,756 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200589706] [2019-10-15 01:14:44,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:44,757 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:44,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:45,054 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200589706] [2019-10-15 01:14:45,054 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669522938] [2019-10-15 01:14:45,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:45,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:45,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:45,778 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:46,111 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:46,171 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:14:46,257 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:46,257 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-15 01:14:46,258 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020533061] [2019-10-15 01:14:46,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:14:46,259 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:46,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:14:46,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:14:46,260 INFO L87 Difference]: Start difference. First operand 1407 states and 1951 transitions. Second operand 12 states. [2019-10-15 01:14:47,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:47,664 INFO L93 Difference]: Finished difference Result 2235 states and 3058 transitions. [2019-10-15 01:14:47,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:14:47,665 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 224 [2019-10-15 01:14:47,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:47,672 INFO L225 Difference]: With dead ends: 2235 [2019-10-15 01:14:47,673 INFO L226 Difference]: Without dead ends: 1183 [2019-10-15 01:14:47,676 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 442 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:47,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2019-10-15 01:14:47,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2019-10-15 01:14:47,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2019-10-15 01:14:47,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1602 transitions. [2019-10-15 01:14:47,724 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1602 transitions. Word has length 224 [2019-10-15 01:14:47,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:47,724 INFO L462 AbstractCegarLoop]: Abstraction has 1183 states and 1602 transitions. [2019-10-15 01:14:47,724 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:14:47,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1602 transitions. [2019-10-15 01:14:47,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-10-15 01:14:47,729 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:47,729 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:47,938 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:47,938 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:47,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:47,939 INFO L82 PathProgramCache]: Analyzing trace with hash -481533873, now seen corresponding path program 2 times [2019-10-15 01:14:47,939 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:47,939 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486932936] [2019-10-15 01:14:47,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:47,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:47,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:48,178 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:14:48,178 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486932936] [2019-10-15 01:14:48,178 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907943687] [2019-10-15 01:14:48,179 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:48,840 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:14:48,840 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:48,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 2300 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:14:48,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:49,053 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:14:49,054 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:49,579 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:49,579 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15] total 27 [2019-10-15 01:14:49,579 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882855520] [2019-10-15 01:14:49,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:14:49,580 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:49,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:14:49,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2019-10-15 01:14:49,581 INFO L87 Difference]: Start difference. First operand 1183 states and 1602 transitions. Second operand 14 states.