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_spec4_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:16:09,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:16:09,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:16:09,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:16:09,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:16:09,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:16:09,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:16:09,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:16:09,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:16:09,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:16:09,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:16:09,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:16:09,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:16:09,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:16:09,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:16:09,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:16:09,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:16:09,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:16:09,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:16:09,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:16:09,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:16:09,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:16:09,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:16:09,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:16:09,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:16:09,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:16:09,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:16:09,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:16:09,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:16:09,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:16:09,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:16:09,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:16:09,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:16:09,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:16:09,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:16:09,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:16:09,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:16:09,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:16:09,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:16:09,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:16:09,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:16:09,839 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 21:16:09,859 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:16:09,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:16:09,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:16:09,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:16:09,861 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:16:09,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:16:09,861 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:16:09,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:16:09,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:16:09,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:16:09,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:16:09,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:16:09,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:16:09,862 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:16:09,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:16:09,863 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:16:09,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:16:09,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:16:09,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:16:09,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:16:09,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:16:09,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:16:09,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:16:09,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:16:09,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:16:09,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:16:09,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:16:09,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:16:09,865 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 21:16:10,135 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:16:10,149 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:16:10,153 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:16:10,154 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:16:10,155 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:16:10,156 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product18.cil.c [2019-10-13 21:16:10,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b20f3ee0/5c5f226b1e4a446b9b7fcd3cf6fc7b26/FLAG17092c54d [2019-10-13 21:16:10,930 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:16:10,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product18.cil.c [2019-10-13 21:16:10,961 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b20f3ee0/5c5f226b1e4a446b9b7fcd3cf6fc7b26/FLAG17092c54d [2019-10-13 21:16:11,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b20f3ee0/5c5f226b1e4a446b9b7fcd3cf6fc7b26 [2019-10-13 21:16:11,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:16:11,103 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:16:11,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:11,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:16:11,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:16:11,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:11" (1/1) ... [2019-10-13 21:16:11,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b61f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:11, skipping insertion in model container [2019-10-13 21:16:11,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:11" (1/1) ... [2019-10-13 21:16:11,121 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:16:11,193 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:16:11,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:11,877 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:16:12,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:12,130 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:16:12,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:12 WrapperNode [2019-10-13 21:16:12,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:12,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:16:12,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:16:12,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:16:12,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:12" (1/1) ... [2019-10-13 21:16:12,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:12" (1/1) ... [2019-10-13 21:16:12,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:12" (1/1) ... [2019-10-13 21:16:12,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:12" (1/1) ... [2019-10-13 21:16:12,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:12" (1/1) ... [2019-10-13 21:16:12,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:12" (1/1) ... [2019-10-13 21:16:12,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:12" (1/1) ... [2019-10-13 21:16:12,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:16:12,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:16:12,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:16:12,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:16:12,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:12" (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 21:16:12,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:16:12,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:16:12,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:12,467 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:16:12,467 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:16:12,468 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:16:12,469 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:16:12,470 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:16:12,470 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:16:12,471 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:16:12,471 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:16:12,471 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:16:12,471 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:16:12,472 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:16:12,472 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:16:12,473 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:16:12,475 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:16:12,475 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:16:12,475 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:16:12,475 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:16:12,476 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:16:12,476 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:16:12,476 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:16:12,476 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:16:12,476 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:16:12,477 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:16:12,477 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:16:12,477 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:16:12,477 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:16:12,477 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:16:12,477 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:16:12,478 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:16:12,478 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:16:12,478 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:16:12,478 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:16:12,478 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:16:12,478 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:16:12,479 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:16:12,479 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:16:12,479 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:16:12,479 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:16:12,479 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:16:12,480 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:16:12,480 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:16:12,480 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:16:12,480 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:16:12,480 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:16:12,480 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:16:12,481 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:16:12,481 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:16:12,481 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:16:12,481 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:16:12,481 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:16:12,481 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:16:12,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:16:12,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:12,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:16:12,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:12,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:16:12,483 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:16:12,483 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:16:12,483 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:16:12,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:16:12,484 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:16:12,484 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:16:12,484 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:16:12,485 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:16:12,485 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:16:12,485 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:16:12,485 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:16:12,485 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:16:12,485 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:16:12,486 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:16:12,486 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-13 21:16:12,487 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:16:12,487 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:16:12,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:16:12,487 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:16:12,487 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:16:12,488 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:16:12,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:12,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:12,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:12,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:16:12,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:16:12,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:16:12,490 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:16:12,491 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:16:12,491 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:16:12,491 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:16:12,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:12,491 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:16:12,491 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:16:12,492 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:16:12,492 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:16:12,492 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-13 21:16:12,492 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:16:12,492 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:16:12,492 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:16:12,493 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:16:12,493 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:16:12,493 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:16:12,493 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:16:12,493 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:16:12,493 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:16:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:16:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:16:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:16:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:16:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:16:12,495 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:16:12,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:16:12,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:16:12,495 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:16:12,495 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:16:12,496 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:16:12,496 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:16:12,496 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:16:12,496 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:16:12,497 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:16:12,497 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:16:12,497 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:16:12,498 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:16:12,498 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:16:12,499 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:16:12,499 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:16:12,500 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:16:12,500 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:16:12,500 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:16:12,500 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:16:12,500 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:16:12,501 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:16:12,501 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:16:12,501 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:16:12,501 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:16:12,502 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:16:12,502 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:16:12,506 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:16:12,506 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:16:12,506 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:16:12,507 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:16:12,507 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:16:12,507 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:16:12,508 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:16:12,516 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:16:12,517 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:16:12,517 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:16:12,517 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:16:12,517 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:16:12,518 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:16:12,518 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:16:12,518 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:16:12,518 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:16:12,518 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:16:12,518 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:16:12,519 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:16:12,519 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:16:12,519 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:16:12,519 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:16:12,519 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:16:12,519 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:16:12,519 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:16:12,519 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:16:12,520 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:16:12,520 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:16:12,520 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:16:12,520 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:16:12,520 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:16:12,520 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:16:12,520 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:16:12,520 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:16:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:16:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:16:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:16:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:16:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:16:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:16:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:16:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:16:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:16:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:16:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:16:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:16:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:16:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:16:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:16:12,523 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:16:12,523 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:16:12,523 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:16:12,523 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:16:12,523 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:16:12,523 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:16:12,523 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:16:12,523 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:12,524 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:12,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:16:12,524 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:16:12,524 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:16:12,524 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:16:12,524 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:16:12,524 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-13 21:16:12,525 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:16:12,525 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:16:12,525 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:16:12,525 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:16:12,525 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:12,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:16:12,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:16:12,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:16:12,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:16:12,526 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:12,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:16:12,526 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:12,526 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:12,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:16:12,526 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:16:12,526 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:16:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:16:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:16:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:16:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:16:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:16:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:16:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:16:12,528 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:16:12,528 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:16:12,528 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:16:12,528 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:16:12,528 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:16:12,528 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:16:12,528 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-13 21:16:12,528 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:16:12,529 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:16:12,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:16:12,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:16:12,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:16:14,695 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:16:14,696 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:16:14,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:14 BoogieIcfgContainer [2019-10-13 21:16:14,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:16:14,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:16:14,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:16:14,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:16:14,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:16:11" (1/3) ... [2019-10-13 21:16:14,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0978b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:14, skipping insertion in model container [2019-10-13 21:16:14,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:12" (2/3) ... [2019-10-13 21:16:14,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0978b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:14, skipping insertion in model container [2019-10-13 21:16:14,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:14" (3/3) ... [2019-10-13 21:16:14,709 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product18.cil.c [2019-10-13 21:16:14,720 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:16:14,733 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:16:14,745 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:16:14,796 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:16:14,796 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:16:14,796 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:16:14,796 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:16:14,797 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:16:14,797 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:16:14,797 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:16:14,797 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:16:14,837 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states. [2019-10-13 21:16:14,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 21:16:14,872 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:14,874 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 21:16:14,879 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:14,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:14,887 INFO L82 PathProgramCache]: Analyzing trace with hash -463084793, now seen corresponding path program 1 times [2019-10-13 21:16:14,897 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:14,898 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660001743] [2019-10-13 21:16:14,898 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:14,899 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:14,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:15,537 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660001743] [2019-10-13 21:16:15,538 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:15,539 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:16:15,539 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105748260] [2019-10-13 21:16:15,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:16:15,548 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:15,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:16:15,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:15,567 INFO L87 Difference]: Start difference. First operand 482 states. Second operand 2 states. [2019-10-13 21:16:15,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:15,672 INFO L93 Difference]: Finished difference Result 662 states and 869 transitions. [2019-10-13 21:16:15,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:16:15,675 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 148 [2019-10-13 21:16:15,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:15,713 INFO L225 Difference]: With dead ends: 662 [2019-10-13 21:16:15,713 INFO L226 Difference]: Without dead ends: 437 [2019-10-13 21:16:15,725 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 21:16:15,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2019-10-13 21:16:15,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2019-10-13 21:16:15,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2019-10-13 21:16:15,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 579 transitions. [2019-10-13 21:16:15,835 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 579 transitions. Word has length 148 [2019-10-13 21:16:15,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:15,837 INFO L462 AbstractCegarLoop]: Abstraction has 437 states and 579 transitions. [2019-10-13 21:16:15,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:16:15,838 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 579 transitions. [2019-10-13 21:16:15,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 21:16:15,841 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:15,842 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 21:16:15,842 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:15,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:15,843 INFO L82 PathProgramCache]: Analyzing trace with hash -348931153, now seen corresponding path program 1 times [2019-10-13 21:16:15,843 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:15,843 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962353698] [2019-10-13 21:16:15,843 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:15,843 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:15,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:16,125 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:16,126 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962353698] [2019-10-13 21:16:16,126 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:16,127 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:16,127 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251939471] [2019-10-13 21:16:16,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:16,129 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:16,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:16,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:16,130 INFO L87 Difference]: Start difference. First operand 437 states and 579 transitions. Second operand 3 states. [2019-10-13 21:16:16,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:16,207 INFO L93 Difference]: Finished difference Result 645 states and 838 transitions. [2019-10-13 21:16:16,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:16,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-13 21:16:16,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:16,216 INFO L225 Difference]: With dead ends: 645 [2019-10-13 21:16:16,216 INFO L226 Difference]: Without dead ends: 440 [2019-10-13 21:16:16,218 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:16,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2019-10-13 21:16:16,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 439. [2019-10-13 21:16:16,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2019-10-13 21:16:16,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 581 transitions. [2019-10-13 21:16:16,249 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 581 transitions. Word has length 149 [2019-10-13 21:16:16,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:16,250 INFO L462 AbstractCegarLoop]: Abstraction has 439 states and 581 transitions. [2019-10-13 21:16:16,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:16,250 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 581 transitions. [2019-10-13 21:16:16,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 21:16:16,253 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:16,254 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 21:16:16,254 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:16,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:16,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1648155391, now seen corresponding path program 1 times [2019-10-13 21:16:16,255 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:16,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096698208] [2019-10-13 21:16:16,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:16,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:16,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:16,490 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:16,491 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096698208] [2019-10-13 21:16:16,491 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:16,491 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:16,491 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353042557] [2019-10-13 21:16:16,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:16,493 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:16,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:16,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:16,494 INFO L87 Difference]: Start difference. First operand 439 states and 581 transitions. Second operand 3 states. [2019-10-13 21:16:16,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:16,553 INFO L93 Difference]: Finished difference Result 854 states and 1160 transitions. [2019-10-13 21:16:16,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:16,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-13 21:16:16,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:16,561 INFO L225 Difference]: With dead ends: 854 [2019-10-13 21:16:16,561 INFO L226 Difference]: Without dead ends: 480 [2019-10-13 21:16:16,563 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 21:16:16,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2019-10-13 21:16:16,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2019-10-13 21:16:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2019-10-13 21:16:16,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 650 transitions. [2019-10-13 21:16:16,594 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 650 transitions. Word has length 159 [2019-10-13 21:16:16,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:16,594 INFO L462 AbstractCegarLoop]: Abstraction has 479 states and 650 transitions. [2019-10-13 21:16:16,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:16,595 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 650 transitions. [2019-10-13 21:16:16,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 21:16:16,598 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:16,599 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 21:16:16,599 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:16,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:16,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1008974663, now seen corresponding path program 1 times [2019-10-13 21:16:16,600 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:16,600 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269895623] [2019-10-13 21:16:16,600 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:16,601 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:16,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:16,759 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:16,761 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269895623] [2019-10-13 21:16:16,762 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:16,762 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:16,762 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722188628] [2019-10-13 21:16:16,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:16,764 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:16,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:16,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:16,765 INFO L87 Difference]: Start difference. First operand 479 states and 650 transitions. Second operand 3 states. [2019-10-13 21:16:16,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:16,800 INFO L93 Difference]: Finished difference Result 971 states and 1362 transitions. [2019-10-13 21:16:16,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:16,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2019-10-13 21:16:16,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:16,805 INFO L225 Difference]: With dead ends: 971 [2019-10-13 21:16:16,805 INFO L226 Difference]: Without dead ends: 557 [2019-10-13 21:16:16,807 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 21:16:16,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2019-10-13 21:16:16,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 556. [2019-10-13 21:16:16,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2019-10-13 21:16:16,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 782 transitions. [2019-10-13 21:16:16,834 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 782 transitions. Word has length 160 [2019-10-13 21:16:16,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:16,835 INFO L462 AbstractCegarLoop]: Abstraction has 556 states and 782 transitions. [2019-10-13 21:16:16,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:16,835 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 782 transitions. [2019-10-13 21:16:16,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 21:16:16,838 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:16,839 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 21:16:16,839 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:16,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:16,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1166153695, now seen corresponding path program 1 times [2019-10-13 21:16:16,840 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:16,840 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040983082] [2019-10-13 21:16:16,840 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:16,840 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:16,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:17,010 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040983082] [2019-10-13 21:16:17,010 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:17,011 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:17,011 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185118179] [2019-10-13 21:16:17,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:17,012 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:17,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:17,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:17,013 INFO L87 Difference]: Start difference. First operand 556 states and 782 transitions. Second operand 3 states. [2019-10-13 21:16:17,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:17,063 INFO L93 Difference]: Finished difference Result 1196 states and 1748 transitions. [2019-10-13 21:16:17,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:17,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-13 21:16:17,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:17,071 INFO L225 Difference]: With dead ends: 1196 [2019-10-13 21:16:17,072 INFO L226 Difference]: Without dead ends: 705 [2019-10-13 21:16:17,075 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 21:16:17,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2019-10-13 21:16:17,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 704. [2019-10-13 21:16:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2019-10-13 21:16:17,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1034 transitions. [2019-10-13 21:16:17,127 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1034 transitions. Word has length 161 [2019-10-13 21:16:17,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:17,128 INFO L462 AbstractCegarLoop]: Abstraction has 704 states and 1034 transitions. [2019-10-13 21:16:17,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:17,129 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1034 transitions. [2019-10-13 21:16:17,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 21:16:17,134 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:17,134 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 21:16:17,135 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:17,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:17,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1633120217, now seen corresponding path program 1 times [2019-10-13 21:16:17,135 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:17,136 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197712484] [2019-10-13 21:16:17,136 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:17,136 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:17,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:17,405 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:17,405 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197712484] [2019-10-13 21:16:17,406 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:17,406 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:17,406 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772758928] [2019-10-13 21:16:17,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:17,407 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:17,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:17,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:17,408 INFO L87 Difference]: Start difference. First operand 704 states and 1034 transitions. Second operand 3 states. [2019-10-13 21:16:17,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:17,449 INFO L93 Difference]: Finished difference Result 1628 states and 2484 transitions. [2019-10-13 21:16:17,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:17,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-13 21:16:17,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:17,456 INFO L225 Difference]: With dead ends: 1628 [2019-10-13 21:16:17,456 INFO L226 Difference]: Without dead ends: 989 [2019-10-13 21:16:17,459 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 21:16:17,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2019-10-13 21:16:17,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 988. [2019-10-13 21:16:17,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2019-10-13 21:16:17,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1514 transitions. [2019-10-13 21:16:17,505 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1514 transitions. Word has length 162 [2019-10-13 21:16:17,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:17,505 INFO L462 AbstractCegarLoop]: Abstraction has 988 states and 1514 transitions. [2019-10-13 21:16:17,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:17,506 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1514 transitions. [2019-10-13 21:16:17,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 21:16:17,511 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:17,511 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 21:16:17,512 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:17,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:17,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1343280992, now seen corresponding path program 1 times [2019-10-13 21:16:17,512 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:17,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879370572] [2019-10-13 21:16:17,513 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:17,513 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:17,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:17,706 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879370572] [2019-10-13 21:16:17,706 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:17,706 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:16:17,707 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740001271] [2019-10-13 21:16:17,707 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:17,707 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:17,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:17,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:16:17,708 INFO L87 Difference]: Start difference. First operand 988 states and 1514 transitions. Second operand 7 states. [2019-10-13 21:16:20,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:20,502 INFO L93 Difference]: Finished difference Result 1390 states and 2021 transitions. [2019-10-13 21:16:20,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:16:20,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2019-10-13 21:16:20,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:20,511 INFO L225 Difference]: With dead ends: 1390 [2019-10-13 21:16:20,511 INFO L226 Difference]: Without dead ends: 1196 [2019-10-13 21:16:20,513 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:20,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2019-10-13 21:16:20,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1187. [2019-10-13 21:16:20,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1187 states. [2019-10-13 21:16:20,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1766 transitions. [2019-10-13 21:16:20,579 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1766 transitions. Word has length 165 [2019-10-13 21:16:20,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:20,580 INFO L462 AbstractCegarLoop]: Abstraction has 1187 states and 1766 transitions. [2019-10-13 21:16:20,580 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:20,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1766 transitions. [2019-10-13 21:16:20,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:16:20,586 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:20,586 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 21:16:20,586 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:20,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:20,587 INFO L82 PathProgramCache]: Analyzing trace with hash 217268504, now seen corresponding path program 1 times [2019-10-13 21:16:20,587 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:20,587 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58981861] [2019-10-13 21:16:20,588 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:20,588 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:20,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:20,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58981861] [2019-10-13 21:16:20,984 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:20,984 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-13 21:16:20,984 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103001061] [2019-10-13 21:16:20,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:16:20,985 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:20,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:16:20,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:16:20,986 INFO L87 Difference]: Start difference. First operand 1187 states and 1766 transitions. Second operand 16 states. [2019-10-13 21:16:21,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:21,339 INFO L93 Difference]: Finished difference Result 1636 states and 2340 transitions. [2019-10-13 21:16:21,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:16:21,340 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 166 [2019-10-13 21:16:21,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:21,348 INFO L225 Difference]: With dead ends: 1636 [2019-10-13 21:16:21,348 INFO L226 Difference]: Without dead ends: 1219 [2019-10-13 21:16:21,351 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:16:21,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2019-10-13 21:16:21,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1215. [2019-10-13 21:16:21,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2019-10-13 21:16:21,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1801 transitions. [2019-10-13 21:16:21,415 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1801 transitions. Word has length 166 [2019-10-13 21:16:21,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:21,416 INFO L462 AbstractCegarLoop]: Abstraction has 1215 states and 1801 transitions. [2019-10-13 21:16:21,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:16:21,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1801 transitions. [2019-10-13 21:16:21,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 21:16:21,422 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:21,422 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1] [2019-10-13 21:16:21,423 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:21,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:21,423 INFO L82 PathProgramCache]: Analyzing trace with hash 138441481, now seen corresponding path program 1 times [2019-10-13 21:16:21,423 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:21,423 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972148904] [2019-10-13 21:16:21,424 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:21,424 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:21,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:21,582 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:21,582 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972148904] [2019-10-13 21:16:21,583 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:21,583 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:16:21,583 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496687382] [2019-10-13 21:16:21,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:16:21,584 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:21,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:16:21,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:16:21,584 INFO L87 Difference]: Start difference. First operand 1215 states and 1801 transitions. Second operand 8 states. [2019-10-13 21:16:22,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:22,298 INFO L93 Difference]: Finished difference Result 1756 states and 2491 transitions. [2019-10-13 21:16:22,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:22,299 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2019-10-13 21:16:22,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:22,310 INFO L225 Difference]: With dead ends: 1756 [2019-10-13 21:16:22,310 INFO L226 Difference]: Without dead ends: 1669 [2019-10-13 21:16:22,312 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:22,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2019-10-13 21:16:22,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1656. [2019-10-13 21:16:22,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1656 states. [2019-10-13 21:16:22,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2369 transitions. [2019-10-13 21:16:22,387 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2369 transitions. Word has length 175 [2019-10-13 21:16:22,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:22,388 INFO L462 AbstractCegarLoop]: Abstraction has 1656 states and 2369 transitions. [2019-10-13 21:16:22,388 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:16:22,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2369 transitions. [2019-10-13 21:16:22,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-13 21:16:22,394 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:22,394 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1] [2019-10-13 21:16:22,395 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:22,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:22,395 INFO L82 PathProgramCache]: Analyzing trace with hash -868594112, now seen corresponding path program 1 times [2019-10-13 21:16:22,395 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:22,395 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307818428] [2019-10-13 21:16:22,396 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:22,396 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:22,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:22,683 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307818428] [2019-10-13 21:16:22,684 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:22,684 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-13 21:16:22,684 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053888399] [2019-10-13 21:16:22,686 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:16:22,686 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:22,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:16:22,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:16:22,687 INFO L87 Difference]: Start difference. First operand 1656 states and 2369 transitions. Second operand 15 states. [2019-10-13 21:16:23,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:23,227 INFO L93 Difference]: Finished difference Result 2067 states and 2886 transitions. [2019-10-13 21:16:23,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 21:16:23,228 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 176 [2019-10-13 21:16:23,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:23,240 INFO L225 Difference]: With dead ends: 2067 [2019-10-13 21:16:23,241 INFO L226 Difference]: Without dead ends: 1655 [2019-10-13 21:16:23,243 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2019-10-13 21:16:23,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2019-10-13 21:16:23,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1654. [2019-10-13 21:16:23,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1654 states. [2019-10-13 21:16:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2364 transitions. [2019-10-13 21:16:23,341 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2364 transitions. Word has length 176 [2019-10-13 21:16:23,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:23,342 INFO L462 AbstractCegarLoop]: Abstraction has 1654 states and 2364 transitions. [2019-10-13 21:16:23,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:16:23,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2364 transitions. [2019-10-13 21:16:23,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-13 21:16:23,349 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:23,349 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1] [2019-10-13 21:16:23,350 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:23,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:23,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1230241458, now seen corresponding path program 2 times [2019-10-13 21:16:23,350 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:23,351 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241631752] [2019-10-13 21:16:23,351 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:23,351 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:23,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:23,558 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:23,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241631752] [2019-10-13 21:16:23,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288568883] [2019-10-13 21:16:23,559 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 21:16:24,027 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:24,028 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:24,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 21:16:24,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:16:24,270 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:16:24,800 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:24,800 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-13 21:16:24,800 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978675355] [2019-10-13 21:16:24,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:24,802 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:24,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:24,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:16:24,803 INFO L87 Difference]: Start difference. First operand 1654 states and 2364 transitions. Second operand 14 states. [2019-10-13 21:16:26,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:26,832 INFO L93 Difference]: Finished difference Result 4914 states and 7135 transitions. [2019-10-13 21:16:26,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:26,833 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 176 [2019-10-13 21:16:26,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:26,876 INFO L225 Difference]: With dead ends: 4914 [2019-10-13 21:16:26,877 INFO L226 Difference]: Without dead ends: 4907 [2019-10-13 21:16:26,884 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 346 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:16:26,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2019-10-13 21:16:27,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 4022. [2019-10-13 21:16:27,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4022 states. [2019-10-13 21:16:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4022 states to 4022 states and 6008 transitions. [2019-10-13 21:16:27,156 INFO L78 Accepts]: Start accepts. Automaton has 4022 states and 6008 transitions. Word has length 176 [2019-10-13 21:16:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:27,157 INFO L462 AbstractCegarLoop]: Abstraction has 4022 states and 6008 transitions. [2019-10-13 21:16:27,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:16:27,157 INFO L276 IsEmpty]: Start isEmpty. Operand 4022 states and 6008 transitions. [2019-10-13 21:16:27,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-13 21:16:27,182 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:27,183 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1] [2019-10-13 21:16:27,392 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:27,392 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:27,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:27,392 INFO L82 PathProgramCache]: Analyzing trace with hash -211310254, now seen corresponding path program 1 times [2019-10-13 21:16:27,393 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:27,393 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541896572] [2019-10-13 21:16:27,393 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:27,393 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:27,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:27,647 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-13 21:16:27,647 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541896572] [2019-10-13 21:16:27,648 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277446739] [2019-10-13 21:16:27,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:28,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 2479 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:28,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:28,385 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 21:16:28,386 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:28,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:28,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:28,889 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:28,995 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 21:16:28,996 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:28,996 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 9] total 24 [2019-10-13 21:16:28,996 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524458814] [2019-10-13 21:16:28,997 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:16:28,997 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:28,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:16:28,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:16:28,998 INFO L87 Difference]: Start difference. First operand 4022 states and 6008 transitions. Second operand 9 states. [2019-10-13 21:16:30,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:30,869 INFO L93 Difference]: Finished difference Result 8018 states and 11990 transitions. [2019-10-13 21:16:30,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:16:30,870 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 178 [2019-10-13 21:16:30,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:30,896 INFO L225 Difference]: With dead ends: 8018 [2019-10-13 21:16:30,897 INFO L226 Difference]: Without dead ends: 4040 [2019-10-13 21:16:30,914 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 340 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2019-10-13 21:16:30,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2019-10-13 21:16:31,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 4040. [2019-10-13 21:16:31,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4040 states. [2019-10-13 21:16:31,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 6029 transitions. [2019-10-13 21:16:31,231 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 6029 transitions. Word has length 178 [2019-10-13 21:16:31,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:31,232 INFO L462 AbstractCegarLoop]: Abstraction has 4040 states and 6029 transitions. [2019-10-13 21:16:31,232 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:16:31,232 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 6029 transitions. [2019-10-13 21:16:31,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 21:16:31,249 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:31,249 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:31,467 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:31,467 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:31,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:31,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1554347738, now seen corresponding path program 1 times [2019-10-13 21:16:31,468 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:31,469 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910483006] [2019-10-13 21:16:31,469 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:31,469 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:31,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:31,720 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-13 21:16:31,720 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910483006] [2019-10-13 21:16:31,721 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006905167] [2019-10-13 21:16:31,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:32,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 2480 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:32,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 21:16:32,542 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:32,819 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:32,870 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:32,915 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:32,916 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 7] total 20 [2019-10-13 21:16:32,916 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162805194] [2019-10-13 21:16:32,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:32,919 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:32,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:32,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:16:32,920 INFO L87 Difference]: Start difference. First operand 4040 states and 6029 transitions. Second operand 7 states. [2019-10-13 21:16:34,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:34,388 INFO L93 Difference]: Finished difference Result 7988 states and 11955 transitions. [2019-10-13 21:16:34,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:34,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2019-10-13 21:16:34,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:34,414 INFO L225 Difference]: With dead ends: 7988 [2019-10-13 21:16:34,414 INFO L226 Difference]: Without dead ends: 4040 [2019-10-13 21:16:34,431 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 347 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:16:34,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2019-10-13 21:16:34,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 4040. [2019-10-13 21:16:34,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4040 states. [2019-10-13 21:16:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 6007 transitions. [2019-10-13 21:16:34,614 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 6007 transitions. Word has length 179 [2019-10-13 21:16:34,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:34,615 INFO L462 AbstractCegarLoop]: Abstraction has 4040 states and 6007 transitions. [2019-10-13 21:16:34,615 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:34,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 6007 transitions. [2019-10-13 21:16:34,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-13 21:16:34,632 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:34,633 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:34,841 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:34,842 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:34,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:34,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1383490202, now seen corresponding path program 1 times [2019-10-13 21:16:34,842 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:34,843 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154509741] [2019-10-13 21:16:34,843 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:34,843 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:34,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:35,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154509741] [2019-10-13 21:16:35,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951313783] [2019-10-13 21:16:35,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:35,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:35,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:35,731 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:36,112 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:36,151 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:36,185 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:36,186 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:16:36,186 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505435601] [2019-10-13 21:16:36,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:36,187 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:36,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:36,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:16:36,187 INFO L87 Difference]: Start difference. First operand 4040 states and 6007 transitions. Second operand 7 states. [2019-10-13 21:16:37,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:37,490 INFO L93 Difference]: Finished difference Result 7289 states and 10708 transitions. [2019-10-13 21:16:37,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:37,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2019-10-13 21:16:37,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:37,515 INFO L225 Difference]: With dead ends: 7289 [2019-10-13 21:16:37,516 INFO L226 Difference]: Without dead ends: 4052 [2019-10-13 21:16:37,528 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 349 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:16:37,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2019-10-13 21:16:37,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 4040. [2019-10-13 21:16:37,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4040 states. [2019-10-13 21:16:37,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 6005 transitions. [2019-10-13 21:16:37,699 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 6005 transitions. Word has length 180 [2019-10-13 21:16:37,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:37,701 INFO L462 AbstractCegarLoop]: Abstraction has 4040 states and 6005 transitions. [2019-10-13 21:16:37,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:37,701 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 6005 transitions. [2019-10-13 21:16:37,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-13 21:16:37,717 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:37,718 INFO L380 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:37,924 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:37,925 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:37,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:37,925 INFO L82 PathProgramCache]: Analyzing trace with hash -585713515, now seen corresponding path program 1 times [2019-10-13 21:16:37,925 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:37,926 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508670275] [2019-10-13 21:16:37,926 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:37,926 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:37,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:38,040 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:38,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508670275] [2019-10-13 21:16:38,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702928789] [2019-10-13 21:16:38,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:38,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:38,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:38,792 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:39,108 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:39,187 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:39,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:39,361 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:39,361 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:39,362 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-13 21:16:39,362 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072670065] [2019-10-13 21:16:39,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:16:39,364 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:39,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:16:39,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:16:39,365 INFO L87 Difference]: Start difference. First operand 4040 states and 6005 transitions. Second operand 16 states. [2019-10-13 21:16:40,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:40,735 INFO L93 Difference]: Finished difference Result 8016 states and 11937 transitions. [2019-10-13 21:16:40,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:40,736 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 181 [2019-10-13 21:16:40,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:40,780 INFO L225 Difference]: With dead ends: 8016 [2019-10-13 21:16:40,781 INFO L226 Difference]: Without dead ends: 4062 [2019-10-13 21:16:40,797 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 346 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:16:40,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2019-10-13 21:16:40,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 4060. [2019-10-13 21:16:40,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4060 states. [2019-10-13 21:16:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4060 states to 4060 states and 6027 transitions. [2019-10-13 21:16:40,985 INFO L78 Accepts]: Start accepts. Automaton has 4060 states and 6027 transitions. Word has length 181 [2019-10-13 21:16:40,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:40,986 INFO L462 AbstractCegarLoop]: Abstraction has 4060 states and 6027 transitions. [2019-10-13 21:16:40,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:16:40,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4060 states and 6027 transitions. [2019-10-13 21:16:41,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-13 21:16:41,007 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:41,009 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:41,217 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:41,217 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:41,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:41,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1598550041, now seen corresponding path program 2 times [2019-10-13 21:16:41,218 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:41,219 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513361618] [2019-10-13 21:16:41,219 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:41,219 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:41,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:41,448 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:16:41,449 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513361618] [2019-10-13 21:16:41,449 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062296632] [2019-10-13 21:16:41,449 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:42,067 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:16:42,067 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:42,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 2369 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:42,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:42,184 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:42,409 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:42,449 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:42,513 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:16:42,514 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:42,514 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-10-13 21:16:42,514 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173055134] [2019-10-13 21:16:42,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:16:42,515 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:42,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:16:42,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:16:42,516 INFO L87 Difference]: Start difference. First operand 4060 states and 6027 transitions. Second operand 11 states.