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_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:13:52,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:13:52,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:13:52,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:13:52,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:13:52,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:13:52,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:13:52,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:13:52,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:13:52,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:13:52,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:13:52,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:13:52,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:13:52,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:13:52,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:13:52,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:13:52,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:13:52,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:13:52,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:13:52,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:13:52,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:13:52,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:13:52,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:13:52,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:13:52,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:13:52,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:13:52,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:13:52,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:13:52,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:13:52,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:13:52,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:13:52,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:13:52,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:13:52,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:13:52,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:13:52,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:13:52,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:13:52,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:13:52,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:13:52,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:13:52,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:13:52,622 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 01:13:52,636 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:13:52,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:13:52,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:13:52,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:13:52,638 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:13:52,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:13:52,639 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:13:52,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:13:52,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:13:52,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:13:52,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:13:52,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:13:52,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:13:52,640 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:13:52,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:13:52,640 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:13:52,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:13:52,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:13:52,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:13:52,641 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:13:52,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:13:52,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:13:52,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:13:52,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:13:52,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:13:52,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:13:52,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:13:52,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:13:52,643 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 01:13:52,915 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:13:52,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:13:52,936 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:13:52,938 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:13:52,938 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:13:52,939 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product27.cil.c [2019-10-15 01:13:53,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07bccec02/90e61d99820342228ae062ca56b26e3c/FLAG9664bb6f3 [2019-10-15 01:13:53,732 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:13:53,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product27.cil.c [2019-10-15 01:13:53,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07bccec02/90e61d99820342228ae062ca56b26e3c/FLAG9664bb6f3 [2019-10-15 01:13:53,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07bccec02/90e61d99820342228ae062ca56b26e3c [2019-10-15 01:13:53,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:13:53,975 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:13:53,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:13:53,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:13:53,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:13:53,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:13:53" (1/1) ... [2019-10-15 01:13:53,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b29eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:53, skipping insertion in model container [2019-10-15 01:13:53,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:13:53" (1/1) ... [2019-10-15 01:13:53,992 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:13:54,071 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:13:54,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:13:54,918 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:13:55,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:13:55,197 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:13:55,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:55 WrapperNode [2019-10-15 01:13:55,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:13:55,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:13:55,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:13:55,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:13:55,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:55" (1/1) ... [2019-10-15 01:13:55,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:55" (1/1) ... [2019-10-15 01:13:55,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:55" (1/1) ... [2019-10-15 01:13:55,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:55" (1/1) ... [2019-10-15 01:13:55,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:55" (1/1) ... [2019-10-15 01:13:55,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:55" (1/1) ... [2019-10-15 01:13:55,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:55" (1/1) ... [2019-10-15 01:13:55,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:13:55,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:13:55,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:13:55,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:13:55,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:55" (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 01:13:55,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:13:55,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:13:55,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:13:55,454 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-15 01:13:55,454 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:13:55,455 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:13:55,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:13:55,455 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:13:55,455 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:13:55,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:13:55,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:13:55,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:13:55,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:13:55,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:13:55,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:13:55,457 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:13:55,457 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:13:55,457 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:13:55,458 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:13:55,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:13:55,458 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:13:55,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:13:55,459 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:13:55,459 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:13:55,459 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:13:55,459 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:13:55,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:13:55,460 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:13:55,460 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:13:55,460 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:13:55,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:13:55,460 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:13:55,460 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:13:55,461 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:13:55,461 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:13:55,461 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:13:55,461 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:13:55,461 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:13:55,462 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:13:55,462 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:13:55,462 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:13:55,462 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:13:55,462 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:13:55,462 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:13:55,463 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:13:55,463 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:13:55,463 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:13:55,463 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:13:55,463 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:13:55,464 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:13:55,464 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:13:55,464 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:13:55,464 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:13:55,464 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:13:55,464 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:13:55,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:13:55,465 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:13:55,465 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:13:55,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:13:55,465 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:13:55,465 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:13:55,466 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:13:55,466 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:13:55,466 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:13:55,466 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:13:55,466 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:13:55,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:13:55,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:13:55,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:13:55,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:13:55,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:13:55,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:13:55,467 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:13:55,468 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:13:55,468 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:13:55,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:13:55,468 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:13:55,468 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:13:55,468 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:13:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:13:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:13:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:13:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:13:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:13:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:13:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:13:55,470 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:13:55,470 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:13:55,470 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:13:55,470 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:13:55,470 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:13:55,470 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:13:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:13:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:13:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:13:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:13:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:13:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-15 01:13:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:13:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:13:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-15 01:13:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:13:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:13:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:13:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:13:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:13:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:13:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:13:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:13:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:13:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:13:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:13:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:13:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:13:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:13:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:13:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:13:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:13:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:13:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:13:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:13:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:13:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:13:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:13:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:13:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:13:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:13:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:13:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:13:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:13:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:13:55,477 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:13:55,477 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-15 01:13:55,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:13:55,477 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:13:55,477 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:13:55,477 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:13:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:13:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:13:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:13:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:13:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:13:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:13:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:13:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:13:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:13:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:13:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:13:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:13:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:13:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:13:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:13:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:13:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:13:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:13:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:13:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:13:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:13:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:13:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:13:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:13:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:13:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:13:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:13:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:13:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:13:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:13:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:13:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:13:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:13:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:13:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:13:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:13:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:13:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:13:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:13:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:13:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:13:55,484 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:13:55,484 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:13:55,484 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:13:55,484 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:13:55,484 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:13:55,484 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:13:55,484 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:13:55,485 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:13:55,485 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:13:55,485 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:13:55,485 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:13:55,485 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:13:55,485 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:13:55,485 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:13:55,486 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:13:55,486 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:13:55,486 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:13:55,486 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:13:55,486 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:13:55,486 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:13:55,486 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:13:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:13:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:13:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:13:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:13:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:13:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:13:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:13:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:13:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:13:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:13:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:13:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:13:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:13:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:13:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:13:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:13:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:13:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:13:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:13:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:13:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:13:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:13:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:13:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:13:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:13:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:13:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:13:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:13:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:13:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:13:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:13:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:13:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:13:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:13:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:13:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:13:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:13:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:13:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:13:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:13:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:13:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:13:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:13:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-15 01:13:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-15 01:13:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:13:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:13:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:13:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:13:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:13:57,784 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:13:57,785 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:13:57,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:13:57 BoogieIcfgContainer [2019-10-15 01:13:57,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:13:57,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:13:57,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:13:57,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:13:57,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:13:53" (1/3) ... [2019-10-15 01:13:57,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f72c521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:13:57, skipping insertion in model container [2019-10-15 01:13:57,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:55" (2/3) ... [2019-10-15 01:13:57,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f72c521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:13:57, skipping insertion in model container [2019-10-15 01:13:57,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:13:57" (3/3) ... [2019-10-15 01:13:57,797 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product27.cil.c [2019-10-15 01:13:57,808 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:13:57,819 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:13:57,831 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:13:57,881 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:13:57,881 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:13:57,882 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:13:57,882 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:13:57,882 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:13:57,882 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:13:57,882 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:13:57,886 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:13:57,929 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states. [2019-10-15 01:13:57,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-15 01:13:57,968 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:57,971 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:57,975 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:57,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:57,982 INFO L82 PathProgramCache]: Analyzing trace with hash -2063245919, now seen corresponding path program 1 times [2019-10-15 01:13:57,994 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:57,994 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841275462] [2019-10-15 01:13:57,994 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:57,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:57,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:58,675 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841275462] [2019-10-15 01:13:58,676 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:58,676 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:13:58,677 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974684715] [2019-10-15 01:13:58,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:13:58,684 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:58,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:13:58,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:13:58,702 INFO L87 Difference]: Start difference. First operand 621 states. Second operand 2 states. [2019-10-15 01:13:58,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:58,807 INFO L93 Difference]: Finished difference Result 917 states and 1239 transitions. [2019-10-15 01:13:58,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:13:58,810 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 190 [2019-10-15 01:13:58,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:58,846 INFO L225 Difference]: With dead ends: 917 [2019-10-15 01:13:58,846 INFO L226 Difference]: Without dead ends: 592 [2019-10-15 01:13:58,854 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 01:13:58,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-10-15 01:13:58,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2019-10-15 01:13:58,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-10-15 01:13:58,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 803 transitions. [2019-10-15 01:13:58,978 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 803 transitions. Word has length 190 [2019-10-15 01:13:58,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:58,980 INFO L462 AbstractCegarLoop]: Abstraction has 592 states and 803 transitions. [2019-10-15 01:13:58,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:13:58,980 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 803 transitions. [2019-10-15 01:13:58,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-15 01:13:58,987 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:58,988 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:58,988 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:58,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:58,991 INFO L82 PathProgramCache]: Analyzing trace with hash -569297871, now seen corresponding path program 1 times [2019-10-15 01:13:58,991 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:58,991 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626156415] [2019-10-15 01:13:58,991 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:58,991 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:58,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:59,336 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626156415] [2019-10-15 01:13:59,336 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:59,336 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:59,336 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847623324] [2019-10-15 01:13:59,346 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:59,346 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:59,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:59,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:59,347 INFO L87 Difference]: Start difference. First operand 592 states and 803 transitions. Second operand 3 states. [2019-10-15 01:13:59,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:59,459 INFO L93 Difference]: Finished difference Result 900 states and 1200 transitions. [2019-10-15 01:13:59,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:59,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2019-10-15 01:13:59,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:59,468 INFO L225 Difference]: With dead ends: 900 [2019-10-15 01:13:59,469 INFO L226 Difference]: Without dead ends: 595 [2019-10-15 01:13:59,473 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 01:13:59,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-15 01:13:59,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 594. [2019-10-15 01:13:59,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2019-10-15 01:13:59,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 805 transitions. [2019-10-15 01:13:59,526 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 805 transitions. Word has length 191 [2019-10-15 01:13:59,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:59,528 INFO L462 AbstractCegarLoop]: Abstraction has 594 states and 805 transitions. [2019-10-15 01:13:59,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:59,528 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 805 transitions. [2019-10-15 01:13:59,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-15 01:13:59,536 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:59,536 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:59,536 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:59,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:59,537 INFO L82 PathProgramCache]: Analyzing trace with hash -306591454, now seen corresponding path program 1 times [2019-10-15 01:13:59,537 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:59,537 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480325432] [2019-10-15 01:13:59,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:59,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:59,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:59,756 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:59,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480325432] [2019-10-15 01:13:59,757 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:59,757 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:59,757 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745676800] [2019-10-15 01:13:59,759 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:59,761 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:59,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:59,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:59,762 INFO L87 Difference]: Start difference. First operand 594 states and 805 transitions. Second operand 3 states. [2019-10-15 01:13:59,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:59,814 INFO L93 Difference]: Finished difference Result 1168 states and 1614 transitions. [2019-10-15 01:13:59,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:59,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2019-10-15 01:13:59,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:59,821 INFO L225 Difference]: With dead ends: 1168 [2019-10-15 01:13:59,821 INFO L226 Difference]: Without dead ends: 639 [2019-10-15 01:13:59,823 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 01:13:59,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2019-10-15 01:13:59,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 638. [2019-10-15 01:13:59,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2019-10-15 01:13:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 880 transitions. [2019-10-15 01:13:59,860 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 880 transitions. Word has length 203 [2019-10-15 01:13:59,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:59,863 INFO L462 AbstractCegarLoop]: Abstraction has 638 states and 880 transitions. [2019-10-15 01:13:59,863 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:59,863 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 880 transitions. [2019-10-15 01:13:59,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-15 01:13:59,874 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:59,874 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:59,875 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:59,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:59,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1906834190, now seen corresponding path program 1 times [2019-10-15 01:13:59,876 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:59,876 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570058156] [2019-10-15 01:13:59,877 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:59,877 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:59,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:14:00,170 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570058156] [2019-10-15 01:14:00,170 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:00,171 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:00,171 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381555143] [2019-10-15 01:14:00,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:00,172 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:00,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:00,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:00,173 INFO L87 Difference]: Start difference. First operand 638 states and 880 transitions. Second operand 3 states. [2019-10-15 01:14:00,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:00,231 INFO L93 Difference]: Finished difference Result 1297 states and 1834 transitions. [2019-10-15 01:14:00,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:00,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2019-10-15 01:14:00,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:00,240 INFO L225 Difference]: With dead ends: 1297 [2019-10-15 01:14:00,240 INFO L226 Difference]: Without dead ends: 724 [2019-10-15 01:14:00,244 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 01:14:00,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2019-10-15 01:14:00,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 723. [2019-10-15 01:14:00,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2019-10-15 01:14:00,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1024 transitions. [2019-10-15 01:14:00,287 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1024 transitions. Word has length 204 [2019-10-15 01:14:00,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:00,288 INFO L462 AbstractCegarLoop]: Abstraction has 723 states and 1024 transitions. [2019-10-15 01:14:00,288 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:00,288 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1024 transitions. [2019-10-15 01:14:00,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-15 01:14:00,293 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:00,294 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:00,294 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:00,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:00,294 INFO L82 PathProgramCache]: Analyzing trace with hash 332587580, now seen corresponding path program 1 times [2019-10-15 01:14:00,295 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:00,295 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612806523] [2019-10-15 01:14:00,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:00,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:00,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:14:00,632 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612806523] [2019-10-15 01:14:00,633 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:00,633 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:14:00,633 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871180697] [2019-10-15 01:14:00,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:14:00,634 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:00,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:14:00,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:14:00,636 INFO L87 Difference]: Start difference. First operand 723 states and 1024 transitions. Second operand 8 states. [2019-10-15 01:14:00,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:00,717 INFO L93 Difference]: Finished difference Result 1015 states and 1409 transitions. [2019-10-15 01:14:00,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:14:00,717 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 207 [2019-10-15 01:14:00,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:00,724 INFO L225 Difference]: With dead ends: 1015 [2019-10-15 01:14:00,724 INFO L226 Difference]: Without dead ends: 723 [2019-10-15 01:14:00,726 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:14:00,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2019-10-15 01:14:00,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2019-10-15 01:14:00,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2019-10-15 01:14:00,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1023 transitions. [2019-10-15 01:14:00,765 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1023 transitions. Word has length 207 [2019-10-15 01:14:00,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:00,767 INFO L462 AbstractCegarLoop]: Abstraction has 723 states and 1023 transitions. [2019-10-15 01:14:00,767 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:14:00,767 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1023 transitions. [2019-10-15 01:14:00,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-15 01:14:00,772 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:00,772 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:00,773 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:00,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:00,773 INFO L82 PathProgramCache]: Analyzing trace with hash -753364862, now seen corresponding path program 1 times [2019-10-15 01:14:00,773 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:00,774 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216245423] [2019-10-15 01:14:00,775 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:00,775 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:00,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:01,185 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:14:01,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216245423] [2019-10-15 01:14:01,187 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:01,188 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:14:01,188 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114793956] [2019-10-15 01:14:01,189 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:01,189 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:01,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:01,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:14:01,190 INFO L87 Difference]: Start difference. First operand 723 states and 1023 transitions. Second operand 7 states. [2019-10-15 01:14:04,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:04,856 INFO L93 Difference]: Finished difference Result 1336 states and 1834 transitions. [2019-10-15 01:14:04,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:14:04,856 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2019-10-15 01:14:04,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:04,864 INFO L225 Difference]: With dead ends: 1336 [2019-10-15 01:14:04,864 INFO L226 Difference]: Without dead ends: 1040 [2019-10-15 01:14:04,866 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:14:04,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2019-10-15 01:14:04,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1031. [2019-10-15 01:14:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2019-10-15 01:14:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1428 transitions. [2019-10-15 01:14:04,920 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1428 transitions. Word has length 214 [2019-10-15 01:14:04,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:04,921 INFO L462 AbstractCegarLoop]: Abstraction has 1031 states and 1428 transitions. [2019-10-15 01:14:04,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:04,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1428 transitions. [2019-10-15 01:14:04,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-10-15 01:14:04,926 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:04,927 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:04,927 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:04,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1756585351, now seen corresponding path program 1 times [2019-10-15 01:14:04,928 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:04,928 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584931588] [2019-10-15 01:14:04,928 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:04,928 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:04,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:14:05,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584931588] [2019-10-15 01:14:05,494 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:05,494 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2019-10-15 01:14:05,494 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745964132] [2019-10-15 01:14:05,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-10-15 01:14:05,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:05,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-10-15 01:14:05,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:05,497 INFO L87 Difference]: Start difference. First operand 1031 states and 1428 transitions. Second operand 28 states. [2019-10-15 01:14:06,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:06,463 INFO L93 Difference]: Finished difference Result 1780 states and 2440 transitions. [2019-10-15 01:14:06,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-10-15 01:14:06,464 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 215 [2019-10-15 01:14:06,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:06,471 INFO L225 Difference]: With dead ends: 1780 [2019-10-15 01:14:06,472 INFO L226 Difference]: Without dead ends: 1172 [2019-10-15 01:14:06,475 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=1459, Unknown=0, NotChecked=0, Total=1560 [2019-10-15 01:14:06,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2019-10-15 01:14:06,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1167. [2019-10-15 01:14:06,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2019-10-15 01:14:06,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1607 transitions. [2019-10-15 01:14:06,532 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1607 transitions. Word has length 215 [2019-10-15 01:14:06,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:06,533 INFO L462 AbstractCegarLoop]: Abstraction has 1167 states and 1607 transitions. [2019-10-15 01:14:06,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-10-15 01:14:06,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1607 transitions. [2019-10-15 01:14:06,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-10-15 01:14:06,538 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:06,539 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:06,539 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:06,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:06,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1759537394, now seen corresponding path program 1 times [2019-10-15 01:14:06,540 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:06,540 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687463060] [2019-10-15 01:14:06,540 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:06,540 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:06,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:14:06,786 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687463060] [2019-10-15 01:14:06,786 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:06,786 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:14:06,787 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433387596] [2019-10-15 01:14:06,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:14:06,788 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:06,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:14:06,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:14:06,788 INFO L87 Difference]: Start difference. First operand 1167 states and 1607 transitions. Second operand 8 states. [2019-10-15 01:14:12,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:12,595 INFO L93 Difference]: Finished difference Result 3413 states and 4661 transitions. [2019-10-15 01:14:12,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 01:14:12,596 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 246 [2019-10-15 01:14:12,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:12,618 INFO L225 Difference]: With dead ends: 3413 [2019-10-15 01:14:12,618 INFO L226 Difference]: Without dead ends: 2693 [2019-10-15 01:14:12,623 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:14:12,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2019-10-15 01:14:12,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 2681. [2019-10-15 01:14:12,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2681 states. [2019-10-15 01:14:12,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2681 states to 2681 states and 3659 transitions. [2019-10-15 01:14:12,809 INFO L78 Accepts]: Start accepts. Automaton has 2681 states and 3659 transitions. Word has length 246 [2019-10-15 01:14:12,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:12,810 INFO L462 AbstractCegarLoop]: Abstraction has 2681 states and 3659 transitions. [2019-10-15 01:14:12,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:14:12,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2681 states and 3659 transitions. [2019-10-15 01:14:12,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-10-15 01:14:12,823 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:12,823 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:12,824 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:12,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:12,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1250875765, now seen corresponding path program 1 times [2019-10-15 01:14:12,825 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:12,825 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570314727] [2019-10-15 01:14:12,826 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:12,826 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:12,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:14:13,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570314727] [2019-10-15 01:14:13,365 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:13,365 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2019-10-15 01:14:13,366 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022907338] [2019-10-15 01:14:13,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-15 01:14:13,369 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:13,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-15 01:14:13,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:14:13,370 INFO L87 Difference]: Start difference. First operand 2681 states and 3659 transitions. Second operand 20 states. [2019-10-15 01:14:13,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:13,964 INFO L93 Difference]: Finished difference Result 4548 states and 6148 transitions. [2019-10-15 01:14:13,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-15 01:14:13,965 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 247 [2019-10-15 01:14:13,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:13,982 INFO L225 Difference]: With dead ends: 4548 [2019-10-15 01:14:13,982 INFO L226 Difference]: Without dead ends: 2358 [2019-10-15 01:14:13,992 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:13,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2019-10-15 01:14:14,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2348. [2019-10-15 01:14:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2348 states. [2019-10-15 01:14:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 3197 transitions. [2019-10-15 01:14:14,090 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 3197 transitions. Word has length 247 [2019-10-15 01:14:14,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:14,091 INFO L462 AbstractCegarLoop]: Abstraction has 2348 states and 3197 transitions. [2019-10-15 01:14:14,091 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-15 01:14:14,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 3197 transitions. [2019-10-15 01:14:14,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-10-15 01:14:14,098 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:14,099 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:14,099 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:14,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:14,099 INFO L82 PathProgramCache]: Analyzing trace with hash -63967557, now seen corresponding path program 1 times [2019-10-15 01:14:14,100 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:14,100 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135569728] [2019-10-15 01:14:14,100 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:14,100 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:14,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:14,320 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135569728] [2019-10-15 01:14:14,321 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854984088] [2019-10-15 01:14:14,321 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 01:14:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:14,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 3103 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:15,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:15,250 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:14:15,250 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:15,695 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:15,777 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:15,841 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:15,984 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:15,984 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-15 01:14:15,984 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958002368] [2019-10-15 01:14:15,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:14:15,990 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:15,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:14:15,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:14:15,991 INFO L87 Difference]: Start difference. First operand 2348 states and 3197 transitions. Second operand 9 states. [2019-10-15 01:14:18,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:18,620 INFO L93 Difference]: Finished difference Result 4674 states and 6374 transitions. [2019-10-15 01:14:18,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:14:18,624 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 256 [2019-10-15 01:14:18,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:18,640 INFO L225 Difference]: With dead ends: 4674 [2019-10-15 01:14:18,640 INFO L226 Difference]: Without dead ends: 2362 [2019-10-15 01:14:18,649 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 498 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:14:18,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2019-10-15 01:14:18,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2362. [2019-10-15 01:14:18,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2362 states. [2019-10-15 01:14:18,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3215 transitions. [2019-10-15 01:14:18,765 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3215 transitions. Word has length 256 [2019-10-15 01:14:18,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:18,765 INFO L462 AbstractCegarLoop]: Abstraction has 2362 states and 3215 transitions. [2019-10-15 01:14:18,765 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:14:18,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3215 transitions. [2019-10-15 01:14:18,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2019-10-15 01:14:18,772 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:18,773 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:18,986 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:18,986 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:18,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:18,987 INFO L82 PathProgramCache]: Analyzing trace with hash 2146922366, now seen corresponding path program 1 times [2019-10-15 01:14:18,987 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:18,987 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745126875] [2019-10-15 01:14:18,987 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:18,988 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:18,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:19,215 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:19,216 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745126875] [2019-10-15 01:14:19,216 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082754958] [2019-10-15 01:14:19,216 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 01:14:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:19,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 3104 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:19,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:20,083 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:14:20,083 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:20,420 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:20,475 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:20,547 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:20,548 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:20,548 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:14:20,548 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670471954] [2019-10-15 01:14:20,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:20,549 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:20,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:20,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:14:20,549 INFO L87 Difference]: Start difference. First operand 2362 states and 3215 transitions. Second operand 7 states. [2019-10-15 01:14:21,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:21,638 INFO L93 Difference]: Finished difference Result 4675 states and 6380 transitions. [2019-10-15 01:14:21,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:14:21,648 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2019-10-15 01:14:21,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:21,663 INFO L225 Difference]: With dead ends: 4675 [2019-10-15 01:14:21,663 INFO L226 Difference]: Without dead ends: 2364 [2019-10-15 01:14:21,673 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 505 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:14:21,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2019-10-15 01:14:21,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 2364. [2019-10-15 01:14:21,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2364 states. [2019-10-15 01:14:21,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 3218 transitions. [2019-10-15 01:14:21,792 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 3218 transitions. Word has length 257 [2019-10-15 01:14:21,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:21,792 INFO L462 AbstractCegarLoop]: Abstraction has 2364 states and 3218 transitions. [2019-10-15 01:14:21,793 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:21,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 3218 transitions. [2019-10-15 01:14:21,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2019-10-15 01:14:21,804 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:21,805 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:22,014 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:22,015 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:22,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:22,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1815238406, now seen corresponding path program 1 times [2019-10-15 01:14:22,016 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:22,016 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445266357] [2019-10-15 01:14:22,016 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:22,017 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:22,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:22,382 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445266357] [2019-10-15 01:14:22,382 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723888835] [2019-10-15 01:14:22,383 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 01:14:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:23,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 3105 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:23,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:23,165 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:23,535 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:23,604 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:23,669 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:23,782 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:23,783 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:23,783 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-15 01:14:23,783 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851523069] [2019-10-15 01:14:23,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:14:23,784 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:23,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:14:23,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:14:23,785 INFO L87 Difference]: Start difference. First operand 2364 states and 3218 transitions. Second operand 16 states. [2019-10-15 01:14:25,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:25,920 INFO L93 Difference]: Finished difference Result 4679 states and 6378 transitions. [2019-10-15 01:14:25,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:25,920 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 258 [2019-10-15 01:14:25,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:25,937 INFO L225 Difference]: With dead ends: 4679 [2019-10-15 01:14:25,938 INFO L226 Difference]: Without dead ends: 2376 [2019-10-15 01:14:25,946 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 502 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:14:25,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2019-10-15 01:14:26,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 2374. [2019-10-15 01:14:26,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2374 states. [2019-10-15 01:14:26,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3229 transitions. [2019-10-15 01:14:26,082 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3229 transitions. Word has length 258 [2019-10-15 01:14:26,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:26,082 INFO L462 AbstractCegarLoop]: Abstraction has 2374 states and 3229 transitions. [2019-10-15 01:14:26,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:14:26,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3229 transitions. [2019-10-15 01:14:26,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2019-10-15 01:14:26,093 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:26,094 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:26,302 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:26,304 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:26,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:26,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1931254393, now seen corresponding path program 2 times [2019-10-15 01:14:26,305 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:26,306 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188058219] [2019-10-15 01:14:26,306 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:26,306 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:26,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat