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_spec1_product14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:14:00,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:14:00,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:14:00,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:14:00,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:14:00,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:14:00,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:14:00,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:14:00,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:14:00,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:14:00,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:14:00,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:14:00,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:14:00,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:14:00,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:14:00,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:14:00,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:14:00,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:14:00,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:14:00,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:14:00,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:14:00,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:14:00,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:14:00,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:14:00,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:14:00,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:14:00,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:14:00,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:14:00,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:14:00,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:14:00,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:14:00,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:14:00,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:14:00,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:14:00,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:14:00,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:14:00,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:14:00,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:14:00,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:14:00,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:14:00,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:14:00,783 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:14:00,805 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:14:00,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:14:00,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:14:00,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:14:00,807 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:14:00,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:14:00,807 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:14:00,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:14:00,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:14:00,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:14:00,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:14:00,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:14:00,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:14:00,809 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:14:00,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:14:00,809 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:14:00,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:14:00,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:14:00,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:14:00,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:14:00,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:14:00,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:00,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:14:00,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:14:00,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:14:00,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:14:00,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:14:00,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:14:00,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:14:01,145 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:14:01,159 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:14:01,163 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:14:01,165 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:14:01,165 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:14:01,166 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product14.cil.c [2019-10-13 21:14:01,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c81d1770/a25349880bb34081ac52f420c9e5b8c8/FLAGbe67c3785 [2019-10-13 21:14:01,915 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:14:01,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product14.cil.c [2019-10-13 21:14:01,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c81d1770/a25349880bb34081ac52f420c9e5b8c8/FLAGbe67c3785 [2019-10-13 21:14:02,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c81d1770/a25349880bb34081ac52f420c9e5b8c8 [2019-10-13 21:14:02,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:14:02,099 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:14:02,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:02,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:14:02,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:14:02,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:02" (1/1) ... [2019-10-13 21:14:02,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7492c7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:02, skipping insertion in model container [2019-10-13 21:14:02,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:02" (1/1) ... [2019-10-13 21:14:02,123 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:14:02,221 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:14:02,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:03,021 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:14:03,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:03,238 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:14:03,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:03 WrapperNode [2019-10-13 21:14:03,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:03,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:14:03,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:14:03,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:14:03,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:03" (1/1) ... [2019-10-13 21:14:03,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:03" (1/1) ... [2019-10-13 21:14:03,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:03" (1/1) ... [2019-10-13 21:14:03,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:03" (1/1) ... [2019-10-13 21:14:03,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:03" (1/1) ... [2019-10-13 21:14:03,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:03" (1/1) ... [2019-10-13 21:14:03,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:03" (1/1) ... [2019-10-13 21:14:03,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:14:03,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:14:03,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:14:03,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:14:03,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:03,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:14:03,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:14:03,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:03,559 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:14:03,559 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:14:03,560 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:14:03,561 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:14:03,561 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:14:03,561 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:14:03,562 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:14:03,562 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:14:03,563 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:14:03,563 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:14:03,564 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:14:03,564 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:14:03,564 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:14:03,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:14:03,567 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:14:03,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:14:03,568 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:14:03,568 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:14:03,568 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:14:03,568 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:14:03,569 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:14:03,569 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:14:03,569 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:14:03,569 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:14:03,569 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:14:03,569 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:14:03,570 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:14:03,570 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:14:03,570 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:14:03,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__AddressBookEncrypt_spec__1 [2019-10-13 21:14:03,570 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:14:03,570 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:14:03,571 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:14:03,571 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:14:03,571 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:14:03,572 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-13 21:14:03,572 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:14:03,572 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:14:03,572 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:14:03,573 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:14:03,573 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:14:03,573 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:14:03,573 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:14:03,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:14:03,573 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:14:03,574 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:14:03,574 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:14:03,574 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:14:03,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:14:03,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:14:03,575 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:14:03,575 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:14:03,575 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:14:03,575 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:14:03,575 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:14:03,575 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:14:03,576 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:14:03,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:03,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:03,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:03,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:14:03,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:14:03,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:14:03,578 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:14:03,578 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:14:03,578 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:14:03,578 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:03,578 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:14:03,579 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:03,579 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:14:03,580 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:14:03,580 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:14:03,580 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:14:03,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:14:03,581 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:14:03,581 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:14:03,582 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:14:03,582 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:14:03,582 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:14:03,582 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:14:03,583 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:14:03,583 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:14:03,584 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:14:03,585 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:14:03,585 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:14:03,585 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:14:03,586 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:14:03,586 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:14:03,586 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:14:03,586 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:14:03,586 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:14:03,587 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:14:03,587 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:14:03,587 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:14:03,587 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:14:03,587 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:14:03,588 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:14:03,588 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:14:03,588 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:14:03,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:14:03,588 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:14:03,588 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:14:03,589 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:14:03,589 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:14:03,589 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:14:03,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:14:03,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:14:03,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:14:03,590 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:14:03,590 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:14:03,590 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:14:03,591 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:14:03,591 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:14:03,591 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:14:03,592 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:14:03,592 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:14:03,592 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:14:03,592 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:14:03,592 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:14:03,593 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:14:03,593 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:14:03,593 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:14:03,593 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:14:03,593 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:14:03,593 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:14:03,593 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:14:03,594 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:14:03,594 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:14:03,594 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:14:03,594 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:14:03,595 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:14:03,595 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:14:03,595 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:14:03,595 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:14:03,595 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:14:03,595 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:14:03,596 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:14:03,596 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:14:03,596 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:14:03,596 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:14:03,596 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__AddressBookEncrypt_spec__1 [2019-10-13 21:14:03,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:14:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:14:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:14:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:14:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:14:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:14:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:14:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:14:03,598 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:14:03,598 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:14:03,598 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:14:03,598 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:14:03,598 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:14:03,598 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:14:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:14:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:14:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:14:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:14:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:14:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:14:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:14:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:14:03,600 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:14:03,600 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:14:03,600 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-13 21:14:03,600 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:14:03,600 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:14:03,600 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:14:03,600 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:14:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:14:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:14:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:14:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:14:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:14:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:14:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:14:03,602 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:14:03,602 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:14:03,602 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:14:03,602 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:14:03,602 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:03,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:14:03,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:14:03,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:14:03,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:14:03,603 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:03,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:14:03,603 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:03,603 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:14:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:14:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:14:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:14:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:14:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:14:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:14:03,605 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:14:03,605 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:14:03,605 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:14:03,605 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:14:03,605 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:14:03,605 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:14:03,605 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:14:03,606 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:14:03,606 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:14:03,606 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:14:03,606 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:14:03,606 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:14:03,606 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:14:03,606 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:14:03,607 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:14:03,607 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:14:03,607 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:03,607 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:03,607 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:14:03,607 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:14:03,607 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:14:03,607 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:14:03,608 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:14:03,608 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:14:03,608 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:14:03,608 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:14:03,608 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:14:03,608 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:14:03,609 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:14:03,609 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:14:03,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:14:03,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:14:03,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:14:05,923 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:14:05,923 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:14:05,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:05 BoogieIcfgContainer [2019-10-13 21:14:05,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:14:05,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:14:05,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:14:05,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:14:05,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:14:02" (1/3) ... [2019-10-13 21:14:05,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680cfe91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:05, skipping insertion in model container [2019-10-13 21:14:05,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:03" (2/3) ... [2019-10-13 21:14:05,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680cfe91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:05, skipping insertion in model container [2019-10-13 21:14:05,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:05" (3/3) ... [2019-10-13 21:14:05,934 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec1_product14.cil.c [2019-10-13 21:14:05,944 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:14:05,954 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:14:05,967 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:14:05,998 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:14:05,998 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:14:05,998 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:14:05,998 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:14:05,998 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:14:05,999 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:14:05,999 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:14:05,999 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:14:06,030 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states. [2019-10-13 21:14:06,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 21:14:06,052 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:06,053 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] [2019-10-13 21:14:06,056 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:06,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:06,062 INFO L82 PathProgramCache]: Analyzing trace with hash 2061337628, now seen corresponding path program 1 times [2019-10-13 21:14:06,074 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:06,074 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694155339] [2019-10-13 21:14:06,074 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:06,075 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:06,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:06,768 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694155339] [2019-10-13 21:14:06,769 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:06,776 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:14:06,777 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099415412] [2019-10-13 21:14:06,783 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:14:06,785 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:06,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:14:06,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:14:06,797 INFO L87 Difference]: Start difference. First operand 517 states. Second operand 2 states. [2019-10-13 21:14:06,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:06,878 INFO L93 Difference]: Finished difference Result 687 states and 950 transitions. [2019-10-13 21:14:06,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:14:06,880 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 154 [2019-10-13 21:14:06,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:06,904 INFO L225 Difference]: With dead ends: 687 [2019-10-13 21:14:06,905 INFO L226 Difference]: Without dead ends: 466 [2019-10-13 21:14:06,913 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:14:06,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2019-10-13 21:14:07,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2019-10-13 21:14:07,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2019-10-13 21:14:07,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 647 transitions. [2019-10-13 21:14:07,047 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 647 transitions. Word has length 154 [2019-10-13 21:14:07,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:07,051 INFO L462 AbstractCegarLoop]: Abstraction has 466 states and 647 transitions. [2019-10-13 21:14:07,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:14:07,051 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 647 transitions. [2019-10-13 21:14:07,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 21:14:07,062 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:07,062 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] [2019-10-13 21:14:07,063 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:07,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:07,063 INFO L82 PathProgramCache]: Analyzing trace with hash -963846558, now seen corresponding path program 1 times [2019-10-13 21:14:07,063 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:07,064 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058257789] [2019-10-13 21:14:07,064 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:07,064 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:07,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:07,359 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058257789] [2019-10-13 21:14:07,359 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:07,359 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:07,360 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020864590] [2019-10-13 21:14:07,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:07,368 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:07,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:07,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:07,368 INFO L87 Difference]: Start difference. First operand 466 states and 647 transitions. Second operand 3 states. [2019-10-13 21:14:07,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:07,463 INFO L93 Difference]: Finished difference Result 670 states and 916 transitions. [2019-10-13 21:14:07,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:07,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-10-13 21:14:07,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:07,472 INFO L225 Difference]: With dead ends: 670 [2019-10-13 21:14:07,472 INFO L226 Difference]: Without dead ends: 469 [2019-10-13 21:14:07,481 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:07,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2019-10-13 21:14:07,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 468. [2019-10-13 21:14:07,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2019-10-13 21:14:07,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 649 transitions. [2019-10-13 21:14:07,535 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 649 transitions. Word has length 155 [2019-10-13 21:14:07,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:07,537 INFO L462 AbstractCegarLoop]: Abstraction has 468 states and 649 transitions. [2019-10-13 21:14:07,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:07,537 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 649 transitions. [2019-10-13 21:14:07,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 21:14:07,548 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:07,548 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] [2019-10-13 21:14:07,548 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:07,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:07,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1639165674, now seen corresponding path program 1 times [2019-10-13 21:14:07,549 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:07,549 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333318566] [2019-10-13 21:14:07,550 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:07,550 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:07,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:07,768 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:07,768 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333318566] [2019-10-13 21:14:07,768 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:07,769 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:07,769 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565398119] [2019-10-13 21:14:07,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:07,774 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:07,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:07,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:07,774 INFO L87 Difference]: Start difference. First operand 468 states and 649 transitions. Second operand 3 states. [2019-10-13 21:14:07,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:07,819 INFO L93 Difference]: Finished difference Result 912 states and 1296 transitions. [2019-10-13 21:14:07,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:07,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-13 21:14:07,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:07,830 INFO L225 Difference]: With dead ends: 912 [2019-10-13 21:14:07,830 INFO L226 Difference]: Without dead ends: 509 [2019-10-13 21:14:07,832 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:07,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2019-10-13 21:14:07,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 508. [2019-10-13 21:14:07,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2019-10-13 21:14:07,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 718 transitions. [2019-10-13 21:14:07,860 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 718 transitions. Word has length 161 [2019-10-13 21:14:07,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:07,860 INFO L462 AbstractCegarLoop]: Abstraction has 508 states and 718 transitions. [2019-10-13 21:14:07,861 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:07,861 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 718 transitions. [2019-10-13 21:14:07,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 21:14:07,865 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:07,865 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] [2019-10-13 21:14:07,865 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:07,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:07,866 INFO L82 PathProgramCache]: Analyzing trace with hash 511993586, now seen corresponding path program 1 times [2019-10-13 21:14:07,866 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:07,866 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335690295] [2019-10-13 21:14:07,866 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:07,866 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:07,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:08,870 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:08,871 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335690295] [2019-10-13 21:14:08,871 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:08,871 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2019-10-13 21:14:08,872 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166869806] [2019-10-13 21:14:08,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-10-13 21:14:08,875 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:08,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-10-13 21:14:08,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=858, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:14:08,877 INFO L87 Difference]: Start difference. First operand 508 states and 718 transitions. Second operand 31 states. [2019-10-13 21:14:13,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:13,714 INFO L93 Difference]: Finished difference Result 1462 states and 2108 transitions. [2019-10-13 21:14:13,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-10-13 21:14:13,715 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 162 [2019-10-13 21:14:13,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:13,722 INFO L225 Difference]: With dead ends: 1462 [2019-10-13 21:14:13,723 INFO L226 Difference]: Without dead ends: 990 [2019-10-13 21:14:13,726 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=252, Invalid=3054, Unknown=0, NotChecked=0, Total=3306 [2019-10-13 21:14:13,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2019-10-13 21:14:13,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 764. [2019-10-13 21:14:13,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 764 states. [2019-10-13 21:14:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1129 transitions. [2019-10-13 21:14:13,800 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1129 transitions. Word has length 162 [2019-10-13 21:14:13,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:13,801 INFO L462 AbstractCegarLoop]: Abstraction has 764 states and 1129 transitions. [2019-10-13 21:14:13,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-10-13 21:14:13,801 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1129 transitions. [2019-10-13 21:14:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-13 21:14:13,808 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:13,808 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-13 21:14:13,809 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:13,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:13,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1860386113, now seen corresponding path program 1 times [2019-10-13 21:14:13,810 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:13,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105301877] [2019-10-13 21:14:13,811 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:13,811 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:13,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:14:14,601 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105301877] [2019-10-13 21:14:14,602 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785822283] [2019-10-13 21:14:14,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:14:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:15,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:14:15,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:14:15,406 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:14:15,406 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:14:15,769 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:15,872 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:16,010 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:14:16,011 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [31, 7] total 39 [2019-10-13 21:14:16,011 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027506622] [2019-10-13 21:14:16,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:14:16,011 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:16,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:14:16,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1372, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:14:16,013 INFO L87 Difference]: Start difference. First operand 764 states and 1129 transitions. Second operand 7 states. [2019-10-13 21:14:16,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:16,895 INFO L93 Difference]: Finished difference Result 1481 states and 2211 transitions. [2019-10-13 21:14:16,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:14:16,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2019-10-13 21:14:16,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:16,902 INFO L225 Difference]: With dead ends: 1481 [2019-10-13 21:14:16,902 INFO L226 Difference]: Without dead ends: 768 [2019-10-13 21:14:16,906 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 318 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=1512, Unknown=0, NotChecked=0, Total=1640 [2019-10-13 21:14:16,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2019-10-13 21:14:16,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 768. [2019-10-13 21:14:16,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2019-10-13 21:14:16,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1134 transitions. [2019-10-13 21:14:16,954 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1134 transitions. Word has length 163 [2019-10-13 21:14:16,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:16,955 INFO L462 AbstractCegarLoop]: Abstraction has 768 states and 1134 transitions. [2019-10-13 21:14:16,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:14:16,955 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1134 transitions. [2019-10-13 21:14:16,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 21:14:16,959 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:16,960 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-13 21:14:17,167 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:14:17,168 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:17,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:17,169 INFO L82 PathProgramCache]: Analyzing trace with hash 241986522, now seen corresponding path program 1 times [2019-10-13 21:14:17,169 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:17,170 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583234884] [2019-10-13 21:14:17,170 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:17,170 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:17,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:17,912 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583234884] [2019-10-13 21:14:17,912 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:17,912 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-13 21:14:17,912 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734069495] [2019-10-13 21:14:17,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 21:14:17,913 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:17,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 21:14:17,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2019-10-13 21:14:17,914 INFO L87 Difference]: Start difference. First operand 768 states and 1134 transitions. Second operand 26 states. [2019-10-13 21:14:25,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:25,403 INFO L93 Difference]: Finished difference Result 2316 states and 3323 transitions. [2019-10-13 21:14:25,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2019-10-13 21:14:25,403 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 164 [2019-10-13 21:14:25,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:25,417 INFO L225 Difference]: With dead ends: 2316 [2019-10-13 21:14:25,417 INFO L226 Difference]: Without dead ends: 2124 [2019-10-13 21:14:25,421 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1469 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=710, Invalid=5452, Unknown=0, NotChecked=0, Total=6162 [2019-10-13 21:14:25,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2019-10-13 21:14:25,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 1676. [2019-10-13 21:14:25,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2019-10-13 21:14:25,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2471 transitions. [2019-10-13 21:14:25,513 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2471 transitions. Word has length 164 [2019-10-13 21:14:25,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:25,514 INFO L462 AbstractCegarLoop]: Abstraction has 1676 states and 2471 transitions. [2019-10-13 21:14:25,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 21:14:25,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2471 transitions. [2019-10-13 21:14:25,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 21:14:25,522 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:25,522 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-13 21:14:25,522 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:25,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:25,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1133387103, now seen corresponding path program 1 times [2019-10-13 21:14:25,523 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:25,523 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141573138] [2019-10-13 21:14:25,523 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:25,524 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:25,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:14:25,736 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141573138] [2019-10-13 21:14:25,736 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:25,736 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:14:25,737 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999664518] [2019-10-13 21:14:25,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:14:25,738 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:25,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:14:25,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:14:25,739 INFO L87 Difference]: Start difference. First operand 1676 states and 2471 transitions. Second operand 11 states. [2019-10-13 21:14:26,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:26,229 INFO L93 Difference]: Finished difference Result 2340 states and 3397 transitions. [2019-10-13 21:14:26,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:14:26,229 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 165 [2019-10-13 21:14:26,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:26,242 INFO L225 Difference]: With dead ends: 2340 [2019-10-13 21:14:26,242 INFO L226 Difference]: Without dead ends: 1768 [2019-10-13 21:14:26,246 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:14:26,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2019-10-13 21:14:26,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1768. [2019-10-13 21:14:26,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1768 states. [2019-10-13 21:14:26,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2614 transitions. [2019-10-13 21:14:26,397 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2614 transitions. Word has length 165 [2019-10-13 21:14:26,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:26,398 INFO L462 AbstractCegarLoop]: Abstraction has 1768 states and 2614 transitions. [2019-10-13 21:14:26,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:14:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2614 transitions. [2019-10-13 21:14:26,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 21:14:26,405 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:26,405 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-13 21:14:26,406 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:26,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:26,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1969264935, now seen corresponding path program 1 times [2019-10-13 21:14:26,406 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:26,407 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843793514] [2019-10-13 21:14:26,407 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:26,407 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:26,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:26,570 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843793514] [2019-10-13 21:14:26,570 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:26,571 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:14:26,571 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678032121] [2019-10-13 21:14:26,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:14:26,572 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:26,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:14:26,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:14:26,572 INFO L87 Difference]: Start difference. First operand 1768 states and 2614 transitions. Second operand 9 states. [2019-10-13 21:14:26,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:26,913 INFO L93 Difference]: Finished difference Result 2001 states and 2925 transitions. [2019-10-13 21:14:26,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:14:26,914 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 165 [2019-10-13 21:14:26,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:26,921 INFO L225 Difference]: With dead ends: 2001 [2019-10-13 21:14:26,921 INFO L226 Difference]: Without dead ends: 810 [2019-10-13 21:14:26,925 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:14:26,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2019-10-13 21:14:26,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 808. [2019-10-13 21:14:26,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2019-10-13 21:14:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1189 transitions. [2019-10-13 21:14:26,967 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1189 transitions. Word has length 165 [2019-10-13 21:14:26,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:26,967 INFO L462 AbstractCegarLoop]: Abstraction has 808 states and 1189 transitions. [2019-10-13 21:14:26,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:14:26,968 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1189 transitions. [2019-10-13 21:14:26,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 21:14:26,972 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:26,972 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-13 21:14:26,972 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:26,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:26,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1273120211, now seen corresponding path program 2 times [2019-10-13 21:14:26,973 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:26,973 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105723931] [2019-10-13 21:14:26,974 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:26,974 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:26,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-13 21:14:27,454 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105723931] [2019-10-13 21:14:27,454 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:27,455 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2019-10-13 21:14:27,455 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913170770] [2019-10-13 21:14:27,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-13 21:14:27,457 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:27,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-13 21:14:27,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:14:27,458 INFO L87 Difference]: Start difference. First operand 808 states and 1189 transitions. Second operand 24 states. [2019-10-13 21:14:34,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:34,682 INFO L93 Difference]: Finished difference Result 2483 states and 3596 transitions. [2019-10-13 21:14:34,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-10-13 21:14:34,688 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 165 [2019-10-13 21:14:34,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:34,702 INFO L225 Difference]: With dead ends: 2483 [2019-10-13 21:14:34,703 INFO L226 Difference]: Without dead ends: 2278 [2019-10-13 21:14:34,709 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1617 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=755, Invalid=5565, Unknown=0, NotChecked=0, Total=6320 [2019-10-13 21:14:34,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2019-10-13 21:14:34,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 1763. [2019-10-13 21:14:34,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2019-10-13 21:14:34,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2606 transitions. [2019-10-13 21:14:34,818 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2606 transitions. Word has length 165 [2019-10-13 21:14:34,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:34,818 INFO L462 AbstractCegarLoop]: Abstraction has 1763 states and 2606 transitions. [2019-10-13 21:14:34,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-13 21:14:34,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2606 transitions. [2019-10-13 21:14:34,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:14:34,826 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:34,826 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-13 21:14:34,827 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:34,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:34,827 INFO L82 PathProgramCache]: Analyzing trace with hash -2049370828, now seen corresponding path program 2 times [2019-10-13 21:14:34,828 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:34,828 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143807146] [2019-10-13 21:14:34,828 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:34,828 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:34,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-13 21:14:35,033 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143807146] [2019-10-13 21:14:35,034 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:35,034 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:14:35,034 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922753281] [2019-10-13 21:14:35,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:14:35,042 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:35,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:14:35,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:14:35,043 INFO L87 Difference]: Start difference. First operand 1763 states and 2606 transitions. Second operand 7 states. [2019-10-13 21:14:35,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:35,284 INFO L93 Difference]: Finished difference Result 1996 states and 2917 transitions. [2019-10-13 21:14:35,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:14:35,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2019-10-13 21:14:35,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:35,290 INFO L225 Difference]: With dead ends: 1996 [2019-10-13 21:14:35,291 INFO L226 Difference]: Without dead ends: 810 [2019-10-13 21:14:35,295 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:14:35,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2019-10-13 21:14:35,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 808. [2019-10-13 21:14:35,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2019-10-13 21:14:35,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1188 transitions. [2019-10-13 21:14:35,333 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1188 transitions. Word has length 166 [2019-10-13 21:14:35,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:35,333 INFO L462 AbstractCegarLoop]: Abstraction has 808 states and 1188 transitions. [2019-10-13 21:14:35,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:14:35,334 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1188 transitions. [2019-10-13 21:14:35,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:14:35,338 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:35,338 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-13 21:14:35,338 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:35,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:35,339 INFO L82 PathProgramCache]: Analyzing trace with hash -285038254, now seen corresponding path program 3 times [2019-10-13 21:14:35,339 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:35,339 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792363660] [2019-10-13 21:14:35,339 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:35,339 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:35,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-13 21:14:36,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792363660] [2019-10-13 21:14:36,005 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:36,005 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-13 21:14:36,005 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71975637] [2019-10-13 21:14:36,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 21:14:36,007 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:36,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 21:14:36,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2019-10-13 21:14:36,007 INFO L87 Difference]: Start difference. First operand 808 states and 1188 transitions. Second operand 26 states.