java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec8_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:17:17,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:17:17,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:17:17,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:17:17,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:17:17,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:17:17,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:17:17,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:17:17,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:17:17,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:17:17,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:17:17,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:17:17,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:17:17,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:17:17,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:17:17,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:17:17,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:17:17,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:17:17,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:17:17,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:17:17,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:17:17,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:17:17,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:17:17,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:17:17,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:17:17,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:17:17,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:17:17,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:17:17,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:17:17,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:17:17,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:17:17,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:17:17,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:17:17,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:17:17,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:17:17,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:17:17,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:17:17,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:17:17,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:17:17,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:17:17,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:17:17,603 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 01:17:17,616 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:17:17,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:17:17,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:17:17,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:17:17,618 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:17:17,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:17:17,619 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:17:17,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:17:17,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:17:17,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:17:17,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:17:17,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:17:17,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:17:17,620 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:17:17,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:17:17,621 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:17:17,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:17:17,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:17:17,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:17:17,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:17:17,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:17:17,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:17:17,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:17:17,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:17:17,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:17:17,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:17:17,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:17:17,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:17:17,623 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 01:17:17,961 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:17:17,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:17:17,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:17:17,986 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:17:17,986 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:17:17,987 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product20.cil.c [2019-10-15 01:17:18,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f3e2caf/af9299d842824c23baef8f77e99ced06/FLAGb42e59dd7 [2019-10-15 01:17:18,777 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:17:18,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product20.cil.c [2019-10-15 01:17:18,810 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f3e2caf/af9299d842824c23baef8f77e99ced06/FLAGb42e59dd7 [2019-10-15 01:17:18,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f3e2caf/af9299d842824c23baef8f77e99ced06 [2019-10-15 01:17:18,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:17:18,943 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:17:18,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:17:18,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:17:18,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:17:18,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:17:18" (1/1) ... [2019-10-15 01:17:18,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4563917c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:18, skipping insertion in model container [2019-10-15 01:17:18,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:17:18" (1/1) ... [2019-10-15 01:17:18,960 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:17:19,052 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:17:19,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:17:19,965 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:17:20,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:17:20,238 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:17:20,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:20 WrapperNode [2019-10-15 01:17:20,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:17:20,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:17:20,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:17:20,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:17:20,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:20" (1/1) ... [2019-10-15 01:17:20,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:20" (1/1) ... [2019-10-15 01:17:20,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:20" (1/1) ... [2019-10-15 01:17:20,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:20" (1/1) ... [2019-10-15 01:17:20,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:20" (1/1) ... [2019-10-15 01:17:20,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:20" (1/1) ... [2019-10-15 01:17:20,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:20" (1/1) ... [2019-10-15 01:17:20,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:17:20,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:17:20,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:17:20,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:17:20,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:20" (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 01:17:20,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:17:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:17:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:17:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:17:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:17:20,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:17:20,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:17:20,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:17:20,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:17:20,565 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:17:20,565 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:17:20,565 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:17:20,565 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:17:20,566 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:17:20,566 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:17:20,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:17:20,569 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:17:20,569 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:17:20,569 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:17:20,570 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:17:20,570 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:17:20,570 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:17:20,571 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:17:20,571 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:17:20,571 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:17:20,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:17:20,571 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:17:20,572 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:17:20,572 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:17:20,572 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:17:20,573 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:17:20,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:17:20,573 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:17:20,574 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:17:20,574 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:17:20,574 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:17:20,575 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:17:20,575 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:17:20,575 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:17:20,575 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:17:20,575 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:17:20,575 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:17:20,576 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:17:20,576 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:17:20,576 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:17:20,576 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:17:20,576 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:17:20,577 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:17:20,577 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:17:20,577 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:17:20,577 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:17:20,577 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:17:20,577 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:17:20,578 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:17:20,578 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:17:20,578 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:17:20,578 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:17:20,578 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:17:20,579 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:17:20,579 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:17:20,579 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:17:20,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-15 01:17:20,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-15 01:17:20,580 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:17:20,580 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:17:20,580 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:17:20,581 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:17:20,581 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:17:20,581 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:17:20,581 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:17:20,581 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:17:20,582 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:17:20,582 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:17:20,582 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:17:20,583 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:17:20,583 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:17:20,583 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:17:20,583 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:17:20,583 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:17:20,584 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:17:20,584 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:17:20,584 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:17:20,585 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:17:20,585 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:17:20,585 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:17:20,586 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:17:20,586 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:17:20,587 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:17:20,587 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:17:20,587 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:17:20,587 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:17:20,587 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:17:20,587 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:17:20,588 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:17:20,588 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:17:20,588 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:17:20,588 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:17:20,588 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-15 01:17:20,589 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:17:20,589 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:17:20,589 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:17:20,589 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:17:20,589 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:17:20,589 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:17:20,590 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:17:20,590 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:17:20,590 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:17:20,590 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:17:20,590 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:17:20,591 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:17:20,591 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:17:20,591 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:17:20,591 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:17:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:17:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:17:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:17:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:17:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:17:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:17:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:17:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:17:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:17:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:17:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:17:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:17:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:17:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:17:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:17:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:17:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:17:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:17:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:17:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:17:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:17:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:17:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:17:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:17:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:17:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:17:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:17:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:17:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:17:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:17:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:17:20,609 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:17:20,609 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:17:20,609 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:17:20,609 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:17:20,609 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:17:20,610 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:17:20,610 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:17:20,610 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:17:20,610 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:17:20,610 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:17:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:17:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:17:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:17:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:17:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:17:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:17:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:17:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:17:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:17:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:17:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:17:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:17:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:17:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:17:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:17:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:17:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:17:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:17:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:17:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:17:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:17:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:17:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:17:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:17:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:17:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:17:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:17:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:17:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:17:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:17:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:17:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:17:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-15 01:17:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-15 01:17:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:17:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:17:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:17:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:17:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:17:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:17:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:17:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:17:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:17:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:17:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:17:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:17:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:17:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:17:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:17:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:17:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:17:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:17:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:17:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:17:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:17:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:17:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:17:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:17:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:17:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:17:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:17:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:17:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:17:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:17:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:17:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:17:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:17:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:17:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:17:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:17:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:17:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:17:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:17:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:17:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:17:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:17:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:17:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:17:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:17:20,622 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:17:20,622 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:17:20,622 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:17:20,622 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-15 01:17:20,622 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:17:20,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:17:20,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:17:20,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:17:22,805 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:17:22,805 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:17:22,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:17:22 BoogieIcfgContainer [2019-10-15 01:17:22,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:17:22,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:17:22,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:17:22,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:17:22,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:17:18" (1/3) ... [2019-10-15 01:17:22,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca80aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:17:22, skipping insertion in model container [2019-10-15 01:17:22,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:20" (2/3) ... [2019-10-15 01:17:22,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca80aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:17:22, skipping insertion in model container [2019-10-15 01:17:22,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:17:22" (3/3) ... [2019-10-15 01:17:22,818 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product20.cil.c [2019-10-15 01:17:22,831 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:17:22,843 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:17:22,855 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:17:22,896 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:17:22,896 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:17:22,896 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:17:22,896 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:17:22,897 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:17:22,897 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:17:22,897 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:17:22,897 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:17:22,944 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states. [2019-10-15 01:17:22,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-15 01:17:22,975 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:22,977 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] [2019-10-15 01:17:22,980 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:22,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:22,985 INFO L82 PathProgramCache]: Analyzing trace with hash -26401555, now seen corresponding path program 1 times [2019-10-15 01:17:22,993 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:22,993 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803049701] [2019-10-15 01:17:22,994 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:22,994 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:22,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:23,627 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 01:17:23,627 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803049701] [2019-10-15 01:17:23,628 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:23,629 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:17:23,629 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977721517] [2019-10-15 01:17:23,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:17:23,637 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:23,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:17:23,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:17:23,655 INFO L87 Difference]: Start difference. First operand 563 states. Second operand 2 states. [2019-10-15 01:17:23,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:23,731 INFO L93 Difference]: Finished difference Result 764 states and 1044 transitions. [2019-10-15 01:17:23,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:17:23,732 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 154 [2019-10-15 01:17:23,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:23,768 INFO L225 Difference]: With dead ends: 764 [2019-10-15 01:17:23,769 INFO L226 Difference]: Without dead ends: 510 [2019-10-15 01:17:23,781 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 01:17:23,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2019-10-15 01:17:23,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2019-10-15 01:17:23,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2019-10-15 01:17:23,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 701 transitions. [2019-10-15 01:17:23,920 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 701 transitions. Word has length 154 [2019-10-15 01:17:23,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:23,926 INFO L462 AbstractCegarLoop]: Abstraction has 510 states and 701 transitions. [2019-10-15 01:17:23,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:17:23,926 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 701 transitions. [2019-10-15 01:17:23,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-15 01:17:23,935 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:23,935 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] [2019-10-15 01:17:23,936 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:23,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:23,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1452305840, now seen corresponding path program 1 times [2019-10-15 01:17:23,936 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:23,937 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304567465] [2019-10-15 01:17:23,937 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:23,937 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:23,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:24,246 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 01:17:24,247 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304567465] [2019-10-15 01:17:24,247 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:24,247 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:24,248 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241909033] [2019-10-15 01:17:24,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:24,254 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:24,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:24,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:24,255 INFO L87 Difference]: Start difference. First operand 510 states and 701 transitions. Second operand 3 states. [2019-10-15 01:17:24,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:24,331 INFO L93 Difference]: Finished difference Result 747 states and 1010 transitions. [2019-10-15 01:17:24,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:24,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-10-15 01:17:24,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:24,336 INFO L225 Difference]: With dead ends: 747 [2019-10-15 01:17:24,336 INFO L226 Difference]: Without dead ends: 513 [2019-10-15 01:17:24,338 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 01:17:24,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2019-10-15 01:17:24,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 512. [2019-10-15 01:17:24,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2019-10-15 01:17:24,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 703 transitions. [2019-10-15 01:17:24,366 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 703 transitions. Word has length 155 [2019-10-15 01:17:24,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:24,367 INFO L462 AbstractCegarLoop]: Abstraction has 512 states and 703 transitions. [2019-10-15 01:17:24,367 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:24,367 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 703 transitions. [2019-10-15 01:17:24,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-15 01:17:24,373 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:24,373 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] [2019-10-15 01:17:24,374 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:24,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:24,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1395553248, now seen corresponding path program 1 times [2019-10-15 01:17:24,375 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:24,375 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400430557] [2019-10-15 01:17:24,375 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:24,375 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:24,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:24,620 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:24,621 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400430557] [2019-10-15 01:17:24,621 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:24,621 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:24,622 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261950702] [2019-10-15 01:17:24,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:24,625 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:24,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:24,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:24,626 INFO L87 Difference]: Start difference. First operand 512 states and 703 transitions. Second operand 3 states. [2019-10-15 01:17:24,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:24,662 INFO L93 Difference]: Finished difference Result 1002 states and 1407 transitions. [2019-10-15 01:17:24,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:24,663 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-10-15 01:17:24,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:24,667 INFO L225 Difference]: With dead ends: 1002 [2019-10-15 01:17:24,667 INFO L226 Difference]: Without dead ends: 555 [2019-10-15 01:17:24,669 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 01:17:24,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2019-10-15 01:17:24,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 554. [2019-10-15 01:17:24,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-10-15 01:17:24,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 775 transitions. [2019-10-15 01:17:24,693 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 775 transitions. Word has length 165 [2019-10-15 01:17:24,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:24,694 INFO L462 AbstractCegarLoop]: Abstraction has 554 states and 775 transitions. [2019-10-15 01:17:24,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:24,694 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 775 transitions. [2019-10-15 01:17:24,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-15 01:17:24,698 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:24,698 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] [2019-10-15 01:17:24,698 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:24,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:24,699 INFO L82 PathProgramCache]: Analyzing trace with hash 742155615, now seen corresponding path program 1 times [2019-10-15 01:17:24,699 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:24,699 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406602388] [2019-10-15 01:17:24,700 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:24,700 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:24,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:24,834 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:24,835 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406602388] [2019-10-15 01:17:24,835 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:24,835 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:24,835 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16682943] [2019-10-15 01:17:24,838 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:24,839 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:24,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:24,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:24,839 INFO L87 Difference]: Start difference. First operand 554 states and 775 transitions. Second operand 3 states. [2019-10-15 01:17:24,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:24,885 INFO L93 Difference]: Finished difference Result 1125 states and 1618 transitions. [2019-10-15 01:17:24,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:24,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2019-10-15 01:17:24,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:24,892 INFO L225 Difference]: With dead ends: 1125 [2019-10-15 01:17:24,893 INFO L226 Difference]: Without dead ends: 636 [2019-10-15 01:17:24,895 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 01:17:24,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2019-10-15 01:17:24,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 635. [2019-10-15 01:17:24,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-10-15 01:17:24,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 913 transitions. [2019-10-15 01:17:24,932 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 913 transitions. Word has length 166 [2019-10-15 01:17:24,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:24,932 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 913 transitions. [2019-10-15 01:17:24,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:24,933 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 913 transitions. [2019-10-15 01:17:24,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-15 01:17:24,939 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:24,940 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] [2019-10-15 01:17:24,940 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:24,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:24,940 INFO L82 PathProgramCache]: Analyzing trace with hash -158203488, now seen corresponding path program 1 times [2019-10-15 01:17:24,941 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:24,941 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065834802] [2019-10-15 01:17:24,942 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:24,942 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:24,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:25,154 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065834802] [2019-10-15 01:17:25,155 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:25,155 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:25,155 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118230357] [2019-10-15 01:17:25,156 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:25,156 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:25,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:25,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:25,157 INFO L87 Difference]: Start difference. First operand 635 states and 913 transitions. Second operand 3 states. [2019-10-15 01:17:25,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:25,207 INFO L93 Difference]: Finished difference Result 1362 states and 2022 transitions. [2019-10-15 01:17:25,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:25,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2019-10-15 01:17:25,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:25,214 INFO L225 Difference]: With dead ends: 1362 [2019-10-15 01:17:25,215 INFO L226 Difference]: Without dead ends: 792 [2019-10-15 01:17:25,218 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 01:17:25,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2019-10-15 01:17:25,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 791. [2019-10-15 01:17:25,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2019-10-15 01:17:25,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1177 transitions. [2019-10-15 01:17:25,263 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1177 transitions. Word has length 167 [2019-10-15 01:17:25,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:25,263 INFO L462 AbstractCegarLoop]: Abstraction has 791 states and 1177 transitions. [2019-10-15 01:17:25,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:25,263 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1177 transitions. [2019-10-15 01:17:25,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-15 01:17:25,269 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:25,269 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] [2019-10-15 01:17:25,269 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:25,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:25,270 INFO L82 PathProgramCache]: Analyzing trace with hash 937061343, now seen corresponding path program 1 times [2019-10-15 01:17:25,270 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:25,270 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752621070] [2019-10-15 01:17:25,271 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:25,271 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:25,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:25,474 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:25,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752621070] [2019-10-15 01:17:25,476 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:25,476 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:25,477 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860469163] [2019-10-15 01:17:25,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:25,478 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:25,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:25,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:25,479 INFO L87 Difference]: Start difference. First operand 791 states and 1177 transitions. Second operand 3 states. [2019-10-15 01:17:25,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:25,538 INFO L93 Difference]: Finished difference Result 1818 states and 2794 transitions. [2019-10-15 01:17:25,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:25,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-10-15 01:17:25,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:25,549 INFO L225 Difference]: With dead ends: 1818 [2019-10-15 01:17:25,550 INFO L226 Difference]: Without dead ends: 1092 [2019-10-15 01:17:25,553 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 01:17:25,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2019-10-15 01:17:25,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1091. [2019-10-15 01:17:25,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2019-10-15 01:17:25,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1681 transitions. [2019-10-15 01:17:25,622 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1681 transitions. Word has length 168 [2019-10-15 01:17:25,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:25,623 INFO L462 AbstractCegarLoop]: Abstraction has 1091 states and 1681 transitions. [2019-10-15 01:17:25,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:25,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1681 transitions. [2019-10-15 01:17:25,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:17:25,631 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:25,631 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] [2019-10-15 01:17:25,631 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:25,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:25,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1598706118, now seen corresponding path program 1 times [2019-10-15 01:17:25,632 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:25,632 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241039258] [2019-10-15 01:17:25,632 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:25,632 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:25,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:25,961 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 01:17:25,961 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241039258] [2019-10-15 01:17:25,962 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:25,962 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:25,962 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674543974] [2019-10-15 01:17:25,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:25,963 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:25,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:25,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:25,963 INFO L87 Difference]: Start difference. First operand 1091 states and 1681 transitions. Second operand 3 states. [2019-10-15 01:17:26,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:26,020 INFO L93 Difference]: Finished difference Result 1426 states and 2141 transitions. [2019-10-15 01:17:26,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:26,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-15 01:17:26,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:26,030 INFO L225 Difference]: With dead ends: 1426 [2019-10-15 01:17:26,030 INFO L226 Difference]: Without dead ends: 1205 [2019-10-15 01:17:26,034 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:26,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2019-10-15 01:17:26,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1204. [2019-10-15 01:17:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2019-10-15 01:17:26,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1843 transitions. [2019-10-15 01:17:26,103 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1843 transitions. Word has length 171 [2019-10-15 01:17:26,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:26,104 INFO L462 AbstractCegarLoop]: Abstraction has 1204 states and 1843 transitions. [2019-10-15 01:17:26,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:26,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1843 transitions. [2019-10-15 01:17:26,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2019-10-15 01:17:26,114 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:26,115 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:26,115 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:26,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:26,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1464715799, now seen corresponding path program 1 times [2019-10-15 01:17:26,116 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:26,116 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520073037] [2019-10-15 01:17:26,116 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:26,117 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:26,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:17:26,407 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520073037] [2019-10-15 01:17:26,407 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:26,407 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:17:26,407 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347325329] [2019-10-15 01:17:26,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:17:26,409 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:26,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:17:26,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:17:26,409 INFO L87 Difference]: Start difference. First operand 1204 states and 1843 transitions. Second operand 6 states. [2019-10-15 01:17:27,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:27,153 INFO L93 Difference]: Finished difference Result 2682 states and 4084 transitions. [2019-10-15 01:17:27,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:17:27,153 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 295 [2019-10-15 01:17:27,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:27,173 INFO L225 Difference]: With dead ends: 2682 [2019-10-15 01:17:27,173 INFO L226 Difference]: Without dead ends: 2359 [2019-10-15 01:17:27,177 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:17:27,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2019-10-15 01:17:27,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2348. [2019-10-15 01:17:27,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2348 states. [2019-10-15 01:17:27,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 3636 transitions. [2019-10-15 01:17:27,339 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 3636 transitions. Word has length 295 [2019-10-15 01:17:27,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:27,340 INFO L462 AbstractCegarLoop]: Abstraction has 2348 states and 3636 transitions. [2019-10-15 01:17:27,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:17:27,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 3636 transitions. [2019-10-15 01:17:27,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2019-10-15 01:17:27,358 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:27,358 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:27,359 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:27,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:27,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1738724539, now seen corresponding path program 1 times [2019-10-15 01:17:27,359 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:27,360 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120545447] [2019-10-15 01:17:27,360 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:27,360 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:27,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:17:27,706 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120545447] [2019-10-15 01:17:27,707 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:27,707 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 01:17:27,708 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243301797] [2019-10-15 01:17:27,710 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:17:27,710 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:27,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:17:27,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:17:27,711 INFO L87 Difference]: Start difference. First operand 2348 states and 3636 transitions. Second operand 9 states. [2019-10-15 01:17:28,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:28,084 INFO L93 Difference]: Finished difference Result 2991 states and 4495 transitions. [2019-10-15 01:17:28,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:17:28,085 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 296 [2019-10-15 01:17:28,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:28,110 INFO L225 Difference]: With dead ends: 2991 [2019-10-15 01:17:28,111 INFO L226 Difference]: Without dead ends: 2322 [2019-10-15 01:17:28,115 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:17:28,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2019-10-15 01:17:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 2318. [2019-10-15 01:17:28,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2318 states. [2019-10-15 01:17:28,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 3585 transitions. [2019-10-15 01:17:28,252 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 3585 transitions. Word has length 296 [2019-10-15 01:17:28,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:28,253 INFO L462 AbstractCegarLoop]: Abstraction has 2318 states and 3585 transitions. [2019-10-15 01:17:28,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:17:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 3585 transitions. [2019-10-15 01:17:28,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2019-10-15 01:17:28,268 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:28,268 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:28,268 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:28,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:28,269 INFO L82 PathProgramCache]: Analyzing trace with hash -2024929825, now seen corresponding path program 1 times [2019-10-15 01:17:28,269 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:28,269 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613973301] [2019-10-15 01:17:28,270 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:28,270 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:28,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:28,817 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 01:17:28,817 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613973301] [2019-10-15 01:17:28,817 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838386242] [2019-10-15 01:17:28,818 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 01:17:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:29,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 3330 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:17:29,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-15 01:17:29,907 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:30,588 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:17:30,691 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:30,789 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:30,978 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:17:30,979 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:17:30,979 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-15 01:17:30,979 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903611693] [2019-10-15 01:17:30,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:17:30,980 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:30,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:17:30,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:17:30,981 INFO L87 Difference]: Start difference. First operand 2318 states and 3585 transitions. Second operand 9 states. [2019-10-15 01:17:32,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:32,624 INFO L93 Difference]: Finished difference Result 4614 states and 7150 transitions. [2019-10-15 01:17:32,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:17:32,625 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 289 [2019-10-15 01:17:32,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:32,650 INFO L225 Difference]: With dead ends: 4614 [2019-10-15 01:17:32,650 INFO L226 Difference]: Without dead ends: 2332 [2019-10-15 01:17:32,661 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 567 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:17:32,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2019-10-15 01:17:32,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 2332. [2019-10-15 01:17:32,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2019-10-15 01:17:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3603 transitions. [2019-10-15 01:17:32,799 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3603 transitions. Word has length 289 [2019-10-15 01:17:32,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:32,800 INFO L462 AbstractCegarLoop]: Abstraction has 2332 states and 3603 transitions. [2019-10-15 01:17:32,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:17:32,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3603 transitions. [2019-10-15 01:17:32,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2019-10-15 01:17:32,816 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:32,816 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:33,029 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:33,030 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:33,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:33,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1114691624, now seen corresponding path program 1 times [2019-10-15 01:17:33,031 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:33,031 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128923621] [2019-10-15 01:17:33,031 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:33,031 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:33,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:33,603 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 01:17:33,604 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128923621] [2019-10-15 01:17:33,604 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317908863] [2019-10-15 01:17:33,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:17:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:34,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 3331 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:17:34,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-15 01:17:34,547 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:35,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:35,169 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:35,259 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:17:35,259 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:17:35,260 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-15 01:17:35,260 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817234597] [2019-10-15 01:17:35,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:17:35,261 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:35,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:17:35,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:17:35,262 INFO L87 Difference]: Start difference. First operand 2332 states and 3603 transitions. Second operand 7 states. [2019-10-15 01:17:36,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:36,383 INFO L93 Difference]: Finished difference Result 4617 states and 7171 transitions. [2019-10-15 01:17:36,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:17:36,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2019-10-15 01:17:36,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:36,401 INFO L225 Difference]: With dead ends: 4617 [2019-10-15 01:17:36,401 INFO L226 Difference]: Without dead ends: 2336 [2019-10-15 01:17:36,412 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 574 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:17:36,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2019-10-15 01:17:36,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 2336. [2019-10-15 01:17:36,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2336 states. [2019-10-15 01:17:36,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3608 transitions. [2019-10-15 01:17:36,528 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3608 transitions. Word has length 290 [2019-10-15 01:17:36,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:36,529 INFO L462 AbstractCegarLoop]: Abstraction has 2336 states and 3608 transitions. [2019-10-15 01:17:36,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:17:36,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3608 transitions. [2019-10-15 01:17:36,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2019-10-15 01:17:36,543 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:36,544 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:36,754 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:36,754 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:36,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:36,755 INFO L82 PathProgramCache]: Analyzing trace with hash 140529265, now seen corresponding path program 1 times [2019-10-15 01:17:36,756 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:36,756 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123969982] [2019-10-15 01:17:36,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:36,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:36,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:37,144 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 01:17:37,145 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123969982] [2019-10-15 01:17:37,145 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185131012] [2019-10-15 01:17:37,145 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 01:17:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:37,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 3332 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:17:37,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:17:38,178 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:38,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:17:38,884 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:38,976 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:17:39,135 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:17:39,136 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-15 01:17:39,136 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015634784] [2019-10-15 01:17:39,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:17:39,138 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:39,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:17:39,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-15 01:17:39,139 INFO L87 Difference]: Start difference. First operand 2336 states and 3608 transitions. Second operand 16 states. [2019-10-15 01:17:40,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:40,964 INFO L93 Difference]: Finished difference Result 4623 states and 7158 transitions. [2019-10-15 01:17:40,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:17:40,964 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 291 [2019-10-15 01:17:40,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:40,982 INFO L225 Difference]: With dead ends: 4623 [2019-10-15 01:17:40,982 INFO L226 Difference]: Without dead ends: 2348 [2019-10-15 01:17:40,990 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 571 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-15 01:17:40,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2019-10-15 01:17:41,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2346. [2019-10-15 01:17:41,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2346 states. [2019-10-15 01:17:41,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3619 transitions. [2019-10-15 01:17:41,102 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3619 transitions. Word has length 291 [2019-10-15 01:17:41,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:41,103 INFO L462 AbstractCegarLoop]: Abstraction has 2346 states and 3619 transitions. [2019-10-15 01:17:41,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:17:41,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3619 transitions. [2019-10-15 01:17:41,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2019-10-15 01:17:41,119 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:41,119 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:17:41,329 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:41,330 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:41,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:41,331 INFO L82 PathProgramCache]: Analyzing trace with hash -724288818, now seen corresponding path program 2 times [2019-10-15 01:17:41,331 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:41,331 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779460] [2019-10-15 01:17:41,332 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:41,332 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:41,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-15 01:17:41,716 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779460] [2019-10-15 01:17:41,716 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192800394] [2019-10-15 01:17:41,716 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:42,412 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:17:42,412 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:17:42,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:17:42,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:17:42,824 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:43,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:43,636 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:43,743 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-15 01:17:43,744 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:17:43,744 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-15 01:17:43,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138757369] [2019-10-15 01:17:43,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:17:43,749 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:43,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:17:43,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:17:43,750 INFO L87 Difference]: Start difference. First operand 2346 states and 3619 transitions. Second operand 12 states. [2019-10-15 01:17:45,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:45,714 INFO L93 Difference]: Finished difference Result 4614 states and 7146 transitions. [2019-10-15 01:17:45,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:17:45,715 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 292 [2019-10-15 01:17:45,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:45,730 INFO L225 Difference]: With dead ends: 4614 [2019-10-15 01:17:45,730 INFO L226 Difference]: Without dead ends: 2348 [2019-10-15 01:17:45,738 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 578 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:17:45,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2019-10-15 01:17:45,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2346. [2019-10-15 01:17:45,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2346 states. [2019-10-15 01:17:45,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3618 transitions. [2019-10-15 01:17:45,847 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3618 transitions. Word has length 292 [2019-10-15 01:17:45,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:45,849 INFO L462 AbstractCegarLoop]: Abstraction has 2346 states and 3618 transitions. [2019-10-15 01:17:45,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:17:45,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3618 transitions. [2019-10-15 01:17:45,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2019-10-15 01:17:45,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:45,861 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:17:46,071 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:46,071 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:46,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:46,072 INFO L82 PathProgramCache]: Analyzing trace with hash 883056807, now seen corresponding path program 3 times [2019-10-15 01:17:46,072 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:46,072 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754555785] [2019-10-15 01:17:46,073 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:46,073 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:46,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:47,143 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:17:47,144 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754555785] [2019-10-15 01:17:47,145 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680764844] [2019-10-15 01:17:47,145 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:47,790 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-15 01:17:47,790 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:17:47,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 2678 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:17:47,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:48,061 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:17:48,062 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:48,602 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:17:48,691 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:48,782 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-15 01:17:48,942 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:17:48,943 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-15 01:17:48,943 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105068472] [2019-10-15 01:17:48,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:17:48,945 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:48,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:17:48,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:17:48,946 INFO L87 Difference]: Start difference. First operand 2346 states and 3618 transitions. Second operand 15 states. [2019-10-15 01:17:50,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:50,539 INFO L93 Difference]: Finished difference Result 4621 states and 7153 transitions. [2019-10-15 01:17:50,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:17:50,540 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 293 [2019-10-15 01:17:50,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:50,555 INFO L225 Difference]: With dead ends: 4621 [2019-10-15 01:17:50,555 INFO L226 Difference]: Without dead ends: 2350 [2019-10-15 01:17:50,563 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 575 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-15 01:17:50,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2019-10-15 01:17:50,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2346. [2019-10-15 01:17:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2346 states. [2019-10-15 01:17:50,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3617 transitions. [2019-10-15 01:17:50,658 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3617 transitions. Word has length 293 [2019-10-15 01:17:50,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:50,658 INFO L462 AbstractCegarLoop]: Abstraction has 2346 states and 3617 transitions. [2019-10-15 01:17:50,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:17:50,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3617 transitions. [2019-10-15 01:17:50,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2019-10-15 01:17:50,671 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:50,671 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:17:50,880 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:50,881 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:50,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:50,881 INFO L82 PathProgramCache]: Analyzing trace with hash 949253727, now seen corresponding path program 1 times [2019-10-15 01:17:50,881 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:50,882 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16525392] [2019-10-15 01:17:50,882 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:50,882 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:50,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:51,380 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:17:51,380 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16525392] [2019-10-15 01:17:51,381 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137424701] [2019-10-15 01:17:51,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true