java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:15:12,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:15:12,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:15:12,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:15:12,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:15:12,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:15:12,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:15:12,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:15:12,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:15:12,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:15:12,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:15:12,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:15:12,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:15:12,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:15:12,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:15:12,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:15:12,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:15:12,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:15:12,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:15:12,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:15:12,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:15:12,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:15:12,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:15:12,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:15:12,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:15:12,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:15:12,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:15:12,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:15:12,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:15:12,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:15:12,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:15:12,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:15:12,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:15:12,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:15:12,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:15:12,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:15:12,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:15:12,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:15:12,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:15:12,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:15:12,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:15:12,175 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 21:15:12,194 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:15:12,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:15:12,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:15:12,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:15:12,197 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:15:12,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:15:12,197 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:15:12,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:15:12,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:15:12,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:15:12,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:15:12,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:15:12,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:15:12,199 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:15:12,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:15:12,200 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:15:12,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:15:12,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:15:12,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:15:12,200 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:15:12,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:15:12,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:12,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:15:12,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:15:12,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:15:12,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:15:12,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:15:12,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:15:12,202 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 21:15:12,482 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:15:12,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:15:12,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:15:12,503 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:15:12,503 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:15:12,504 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product30.cil.c [2019-10-13 21:15:12,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00c5a4933/4ae881db3b3f4fea88ac9b3cbbed0e0d/FLAG87b21678b [2019-10-13 21:15:13,218 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:15:13,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product30.cil.c [2019-10-13 21:15:13,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00c5a4933/4ae881db3b3f4fea88ac9b3cbbed0e0d/FLAG87b21678b [2019-10-13 21:15:13,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00c5a4933/4ae881db3b3f4fea88ac9b3cbbed0e0d [2019-10-13 21:15:13,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:15:13,424 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:15:13,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:13,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:15:13,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:15:13,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:13" (1/1) ... [2019-10-13 21:15:13,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792328e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:13, skipping insertion in model container [2019-10-13 21:15:13,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:13" (1/1) ... [2019-10-13 21:15:13,439 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:15:13,526 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:15:14,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:14,435 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:15:14,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:14,622 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:15:14,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:14 WrapperNode [2019-10-13 21:15:14,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:14,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:15:14,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:15:14,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:15:14,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:14" (1/1) ... [2019-10-13 21:15:14,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:14" (1/1) ... [2019-10-13 21:15:14,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:14" (1/1) ... [2019-10-13 21:15:14,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:14" (1/1) ... [2019-10-13 21:15:14,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:14" (1/1) ... [2019-10-13 21:15:14,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:14" (1/1) ... [2019-10-13 21:15:14,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:14" (1/1) ... [2019-10-13 21:15:14,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:15:14,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:15:14,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:15:14,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:15:14,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:14" (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 21:15:14,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:15:14,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:15:14,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:14,867 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:15:14,867 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:15:14,868 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:15:14,868 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:15:14,868 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:15:14,868 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:15:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:15:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:15:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:15:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:15:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:15:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:15:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:15:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:15:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:15:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:15:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:15:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:15:14,873 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:15:14,873 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:15:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:15:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:15:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:15:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:15:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:15:14,875 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:15:14,875 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:15:14,875 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:15:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:15:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:15:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:15:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:15:14,878 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:15:14,878 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:15:14,878 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:15:14,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:15:14,878 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:15:14,879 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:15:14,879 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:15:14,879 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:15:14,879 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:15:14,879 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:15:14,879 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:15:14,880 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:15:14,880 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:15:14,880 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:15:14,880 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:15:14,880 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:15:14,881 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:15:14,881 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:15:14,881 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:15:14,881 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:15:14,881 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:15:14,882 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:15:14,882 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:15:14,882 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:15:14,882 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:15:14,882 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:15:14,882 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:15:14,883 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:15:14,883 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:15:14,883 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:15:14,883 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:15:14,884 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:15:14,884 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:15:14,884 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:15:14,884 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:15:14,884 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:15:14,884 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:15:14,885 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:15:14,885 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:15:14,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:15:14,885 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:15:14,885 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:15:14,886 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:15:14,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:15:14,886 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:15:14,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:15:14,886 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:15:14,887 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-13 21:15:14,887 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:15:14,887 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:15:14,887 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:15:14,887 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:15:14,887 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:15:14,887 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:15:14,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:14,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:14,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:14,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:15:14,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:15:14,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:15:14,889 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:15:14,889 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:15:14,889 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:14,889 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:15:14,889 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:14,889 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:15:14,889 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:15:14,890 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:15:14,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:15:14,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:15:14,890 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:15:14,890 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:15:14,890 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:15:14,891 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:15:14,891 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:15:14,891 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:15:14,891 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:15:14,891 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:15:14,891 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:15:14,891 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:15:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:15:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:15:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:15:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:15:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:15:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:15:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:15:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:15:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:15:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:15:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:15:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:15:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:15:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:15:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:15:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:15:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:15:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:15:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:15:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:15:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:15:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:15:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:15:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:15:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:15:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:15:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:15:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:15:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:15:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:15:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:15:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:15:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:15:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:15:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:15:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:15:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:15:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:15:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:15:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:15:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:15:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:15:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:15:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:15:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:15:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:15:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:15:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:15:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:15:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:15:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:15:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:15:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:15:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:15:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:15:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:15:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:15:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:15:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:15:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:15:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:15:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:15:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:15:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:15:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:15:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:15:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:15:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:15:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:15:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:15:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:15:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:15:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:15:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:15:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:15:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:15:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:15:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:15:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:15:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:15:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:15:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:15:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:15:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:15:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:15:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:15:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:15:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:15:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:15:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:15:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:15:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:15:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:15:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:15:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:15:14,906 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:15:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:15:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-13 21:15:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:15:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:15:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:15:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:15:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:15:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:15:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:15:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:15:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:15:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:15:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:15:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:15:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:15:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:15:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:15:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:15:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:15:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:15:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:15:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:15:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:15:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:15:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:15:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:15:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:15:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:15:16,937 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:15:16,937 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:15:16,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:16 BoogieIcfgContainer [2019-10-13 21:15:16,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:15:16,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:15:16,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:15:16,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:15:16,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:15:13" (1/3) ... [2019-10-13 21:15:16,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e99d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:16, skipping insertion in model container [2019-10-13 21:15:16,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:14" (2/3) ... [2019-10-13 21:15:16,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e99d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:16, skipping insertion in model container [2019-10-13 21:15:16,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:16" (3/3) ... [2019-10-13 21:15:16,951 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product30.cil.c [2019-10-13 21:15:16,961 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:15:16,972 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:15:16,984 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:15:17,026 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:15:17,026 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:15:17,026 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:15:17,027 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:15:17,030 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:15:17,030 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:15:17,031 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:15:17,031 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:15:17,071 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states. [2019-10-13 21:15:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-10-13 21:15:17,108 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:17,110 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:17,119 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:17,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:17,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1742226729, now seen corresponding path program 1 times [2019-10-13 21:15:17,137 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:17,137 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965335476] [2019-10-13 21:15:17,137 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:17,138 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:17,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:17,857 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965335476] [2019-10-13 21:15:17,858 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:17,860 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:15:17,860 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066484372] [2019-10-13 21:15:17,867 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:15:17,869 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:17,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:15:17,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:17,886 INFO L87 Difference]: Start difference. First operand 546 states. Second operand 2 states. [2019-10-13 21:15:17,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:17,959 INFO L93 Difference]: Finished difference Result 788 states and 1045 transitions. [2019-10-13 21:15:17,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:15:17,961 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 211 [2019-10-13 21:15:17,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:18,008 INFO L225 Difference]: With dead ends: 788 [2019-10-13 21:15:18,009 INFO L226 Difference]: Without dead ends: 500 [2019-10-13 21:15:18,022 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 21:15:18,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-10-13 21:15:18,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2019-10-13 21:15:18,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2019-10-13 21:15:18,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 664 transitions. [2019-10-13 21:15:18,167 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 664 transitions. Word has length 211 [2019-10-13 21:15:18,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:18,171 INFO L462 AbstractCegarLoop]: Abstraction has 500 states and 664 transitions. [2019-10-13 21:15:18,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:15:18,172 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 664 transitions. [2019-10-13 21:15:18,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-13 21:15:18,181 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:18,181 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:18,182 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:18,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:18,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1814113968, now seen corresponding path program 1 times [2019-10-13 21:15:18,183 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:18,183 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181687970] [2019-10-13 21:15:18,183 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:18,184 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:18,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:18,503 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181687970] [2019-10-13 21:15:18,503 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:18,504 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:18,504 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199069518] [2019-10-13 21:15:18,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:18,511 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:18,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:18,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:18,512 INFO L87 Difference]: Start difference. First operand 500 states and 664 transitions. Second operand 3 states. [2019-10-13 21:15:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:18,636 INFO L93 Difference]: Finished difference Result 771 states and 1008 transitions. [2019-10-13 21:15:18,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:18,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 212 [2019-10-13 21:15:18,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:18,644 INFO L225 Difference]: With dead ends: 771 [2019-10-13 21:15:18,644 INFO L226 Difference]: Without dead ends: 503 [2019-10-13 21:15:18,649 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 21:15:18,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2019-10-13 21:15:18,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 502. [2019-10-13 21:15:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2019-10-13 21:15:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 666 transitions. [2019-10-13 21:15:18,694 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 666 transitions. Word has length 212 [2019-10-13 21:15:18,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:18,696 INFO L462 AbstractCegarLoop]: Abstraction has 502 states and 666 transitions. [2019-10-13 21:15:18,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:18,696 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 666 transitions. [2019-10-13 21:15:18,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-10-13 21:15:18,703 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:18,703 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:18,704 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:18,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:18,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1188714336, now seen corresponding path program 1 times [2019-10-13 21:15:18,704 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:18,705 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633572758] [2019-10-13 21:15:18,705 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:18,705 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:18,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:18,933 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633572758] [2019-10-13 21:15:18,933 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:18,933 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:18,933 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924930017] [2019-10-13 21:15:18,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:18,934 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:18,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:18,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:18,935 INFO L87 Difference]: Start difference. First operand 502 states and 666 transitions. Second operand 3 states. [2019-10-13 21:15:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:18,977 INFO L93 Difference]: Finished difference Result 980 states and 1330 transitions. [2019-10-13 21:15:18,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:18,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2019-10-13 21:15:18,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:18,982 INFO L225 Difference]: With dead ends: 980 [2019-10-13 21:15:18,983 INFO L226 Difference]: Without dead ends: 543 [2019-10-13 21:15:18,985 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 21:15:18,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2019-10-13 21:15:19,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 542. [2019-10-13 21:15:19,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2019-10-13 21:15:19,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 735 transitions. [2019-10-13 21:15:19,026 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 735 transitions. Word has length 222 [2019-10-13 21:15:19,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:19,026 INFO L462 AbstractCegarLoop]: Abstraction has 542 states and 735 transitions. [2019-10-13 21:15:19,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:19,027 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 735 transitions. [2019-10-13 21:15:19,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2019-10-13 21:15:19,036 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:19,036 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:19,036 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:19,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:19,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1821969317, now seen corresponding path program 1 times [2019-10-13 21:15:19,041 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:19,041 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33441595] [2019-10-13 21:15:19,041 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:19,042 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:19,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:19,439 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33441595] [2019-10-13 21:15:19,440 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:19,440 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:19,441 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290940287] [2019-10-13 21:15:19,441 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:19,442 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:19,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:19,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:19,442 INFO L87 Difference]: Start difference. First operand 542 states and 735 transitions. Second operand 3 states. [2019-10-13 21:15:19,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:19,505 INFO L93 Difference]: Finished difference Result 1097 states and 1532 transitions. [2019-10-13 21:15:19,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:19,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2019-10-13 21:15:19,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:19,514 INFO L225 Difference]: With dead ends: 1097 [2019-10-13 21:15:19,514 INFO L226 Difference]: Without dead ends: 620 [2019-10-13 21:15:19,517 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 21:15:19,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-13 21:15:19,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 619. [2019-10-13 21:15:19,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-13 21:15:19,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 867 transitions. [2019-10-13 21:15:19,559 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 867 transitions. Word has length 223 [2019-10-13 21:15:19,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:19,560 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 867 transitions. [2019-10-13 21:15:19,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:19,560 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 867 transitions. [2019-10-13 21:15:19,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-10-13 21:15:19,567 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:19,567 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:19,568 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:19,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:19,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1508989344, now seen corresponding path program 1 times [2019-10-13 21:15:19,569 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:19,570 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883865197] [2019-10-13 21:15:19,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:19,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:19,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:19,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883865197] [2019-10-13 21:15:19,802 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:19,802 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:19,802 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737116449] [2019-10-13 21:15:19,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:19,803 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:19,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:19,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:19,804 INFO L87 Difference]: Start difference. First operand 619 states and 867 transitions. Second operand 3 states. [2019-10-13 21:15:19,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:19,845 INFO L93 Difference]: Finished difference Result 1322 states and 1918 transitions. [2019-10-13 21:15:19,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:19,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2019-10-13 21:15:19,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:19,853 INFO L225 Difference]: With dead ends: 1322 [2019-10-13 21:15:19,853 INFO L226 Difference]: Without dead ends: 768 [2019-10-13 21:15:19,856 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 21:15:19,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2019-10-13 21:15:19,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 767. [2019-10-13 21:15:19,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2019-10-13 21:15:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1119 transitions. [2019-10-13 21:15:19,897 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1119 transitions. Word has length 224 [2019-10-13 21:15:19,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:19,898 INFO L462 AbstractCegarLoop]: Abstraction has 767 states and 1119 transitions. [2019-10-13 21:15:19,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:19,898 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1119 transitions. [2019-10-13 21:15:19,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-10-13 21:15:19,903 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:19,904 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:19,904 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:19,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:19,904 INFO L82 PathProgramCache]: Analyzing trace with hash -2014555995, now seen corresponding path program 1 times [2019-10-13 21:15:19,905 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:19,905 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115031939] [2019-10-13 21:15:19,905 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:19,905 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:19,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:20,154 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:20,154 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115031939] [2019-10-13 21:15:20,156 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:20,156 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:20,156 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786951744] [2019-10-13 21:15:20,157 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:20,157 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:20,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:20,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:20,158 INFO L87 Difference]: Start difference. First operand 767 states and 1119 transitions. Second operand 3 states. [2019-10-13 21:15:20,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:20,219 INFO L93 Difference]: Finished difference Result 1754 states and 2654 transitions. [2019-10-13 21:15:20,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:20,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2019-10-13 21:15:20,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:20,230 INFO L225 Difference]: With dead ends: 1754 [2019-10-13 21:15:20,230 INFO L226 Difference]: Without dead ends: 1052 [2019-10-13 21:15:20,234 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 21:15:20,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2019-10-13 21:15:20,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1051. [2019-10-13 21:15:20,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2019-10-13 21:15:20,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1599 transitions. [2019-10-13 21:15:20,283 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1599 transitions. Word has length 225 [2019-10-13 21:15:20,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:20,284 INFO L462 AbstractCegarLoop]: Abstraction has 1051 states and 1599 transitions. [2019-10-13 21:15:20,284 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:20,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1599 transitions. [2019-10-13 21:15:20,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-10-13 21:15:20,294 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:20,295 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:20,295 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:20,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:20,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1949808246, now seen corresponding path program 1 times [2019-10-13 21:15:20,296 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:20,297 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004272378] [2019-10-13 21:15:20,297 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:20,297 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:20,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:20,784 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:20,784 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004272378] [2019-10-13 21:15:20,785 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775366046] [2019-10-13 21:15:20,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:21,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 2941 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:21,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:15:21,814 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:22,281 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:22,375 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:22,460 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:22,626 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:22,626 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-13 21:15:22,626 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806153411] [2019-10-13 21:15:22,628 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:15:22,628 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:22,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:15:22,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:15:22,629 INFO L87 Difference]: Start difference. First operand 1051 states and 1599 transitions. Second operand 9 states. [2019-10-13 21:15:24,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:24,200 INFO L93 Difference]: Finished difference Result 2080 states and 3178 transitions. [2019-10-13 21:15:24,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:15:24,200 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 228 [2019-10-13 21:15:24,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:24,208 INFO L225 Difference]: With dead ends: 2080 [2019-10-13 21:15:24,208 INFO L226 Difference]: Without dead ends: 1065 [2019-10-13 21:15:24,214 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 445 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:15:24,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2019-10-13 21:15:24,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2019-10-13 21:15:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2019-10-13 21:15:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1617 transitions. [2019-10-13 21:15:24,288 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1617 transitions. Word has length 228 [2019-10-13 21:15:24,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:24,288 INFO L462 AbstractCegarLoop]: Abstraction has 1065 states and 1617 transitions. [2019-10-13 21:15:24,288 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:15:24,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1617 transitions. [2019-10-13 21:15:24,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-10-13 21:15:24,296 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:24,297 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:24,506 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:24,506 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:24,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:24,506 INFO L82 PathProgramCache]: Analyzing trace with hash -298171984, now seen corresponding path program 1 times [2019-10-13 21:15:24,507 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:24,507 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818076900] [2019-10-13 21:15:24,507 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:24,507 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:24,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:24,919 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818076900] [2019-10-13 21:15:24,919 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470254033] [2019-10-13 21:15:24,919 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 21:15:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:25,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:25,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:15:25,689 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:26,006 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:26,071 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:26,149 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:26,149 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:26,150 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-13 21:15:26,151 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545424640] [2019-10-13 21:15:26,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:26,153 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:26,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:26,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:26,155 INFO L87 Difference]: Start difference. First operand 1065 states and 1617 transitions. Second operand 7 states. [2019-10-13 21:15:27,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:27,103 INFO L93 Difference]: Finished difference Result 2081 states and 3188 transitions. [2019-10-13 21:15:27,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:27,104 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2019-10-13 21:15:27,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:27,111 INFO L225 Difference]: With dead ends: 2081 [2019-10-13 21:15:27,111 INFO L226 Difference]: Without dead ends: 1067 [2019-10-13 21:15:27,116 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 452 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:15:27,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2019-10-13 21:15:27,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1067. [2019-10-13 21:15:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1067 states. [2019-10-13 21:15:27,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1620 transitions. [2019-10-13 21:15:27,170 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1620 transitions. Word has length 229 [2019-10-13 21:15:27,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:27,170 INFO L462 AbstractCegarLoop]: Abstraction has 1067 states and 1620 transitions. [2019-10-13 21:15:27,170 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:27,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1620 transitions. [2019-10-13 21:15:27,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-10-13 21:15:27,177 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:27,177 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:27,385 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:27,385 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:27,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:27,386 INFO L82 PathProgramCache]: Analyzing trace with hash 541650636, now seen corresponding path program 1 times [2019-10-13 21:15:27,387 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:27,387 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159949968] [2019-10-13 21:15:27,387 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:27,388 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:27,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:27,889 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159949968] [2019-10-13 21:15:27,890 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215271366] [2019-10-13 21:15:27,890 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 21:15:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:28,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:28,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:28,707 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:28,707 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:29,085 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:29,179 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:29,279 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:29,431 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:29,431 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-13 21:15:29,431 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215511853] [2019-10-13 21:15:29,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:29,432 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:29,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:29,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:15:29,433 INFO L87 Difference]: Start difference. First operand 1067 states and 1620 transitions. Second operand 16 states. [2019-10-13 21:15:31,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:31,722 INFO L93 Difference]: Finished difference Result 2085 states and 3182 transitions. [2019-10-13 21:15:31,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:31,722 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 230 [2019-10-13 21:15:31,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:31,732 INFO L225 Difference]: With dead ends: 2085 [2019-10-13 21:15:31,732 INFO L226 Difference]: Without dead ends: 1079 [2019-10-13 21:15:31,741 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 449 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:15:31,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2019-10-13 21:15:31,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1077. [2019-10-13 21:15:31,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2019-10-13 21:15:31,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1631 transitions. [2019-10-13 21:15:31,791 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1631 transitions. Word has length 230 [2019-10-13 21:15:31,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:31,791 INFO L462 AbstractCegarLoop]: Abstraction has 1077 states and 1631 transitions. [2019-10-13 21:15:31,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:15:31,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1631 transitions. [2019-10-13 21:15:31,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-13 21:15:31,799 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:31,799 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:32,008 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:32,008 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:32,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:32,009 INFO L82 PathProgramCache]: Analyzing trace with hash 718252898, now seen corresponding path program 2 times [2019-10-13 21:15:32,010 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:32,010 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240995125] [2019-10-13 21:15:32,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:32,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:32,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:32,334 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240995125] [2019-10-13 21:15:32,335 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917575038] [2019-10-13 21:15:32,335 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:32,918 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:15:32,918 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:32,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 2297 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:15:32,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:15:33,196 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:33,671 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:33,672 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-13 21:15:33,672 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694559779] [2019-10-13 21:15:33,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:15:33,673 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:33,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:15:33,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:15:33,674 INFO L87 Difference]: Start difference. First operand 1077 states and 1631 transitions. Second operand 14 states. [2019-10-13 21:15:36,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:36,103 INFO L93 Difference]: Finished difference Result 3418 states and 5238 transitions. [2019-10-13 21:15:36,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:15:36,104 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 231 [2019-10-13 21:15:36,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:36,131 INFO L225 Difference]: With dead ends: 3418 [2019-10-13 21:15:36,131 INFO L226 Difference]: Without dead ends: 3163 [2019-10-13 21:15:36,135 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 460 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:15:36,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2019-10-13 21:15:36,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 2860. [2019-10-13 21:15:36,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2860 states. [2019-10-13 21:15:36,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 4509 transitions. [2019-10-13 21:15:36,372 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 4509 transitions. Word has length 231 [2019-10-13 21:15:36,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:36,373 INFO L462 AbstractCegarLoop]: Abstraction has 2860 states and 4509 transitions. [2019-10-13 21:15:36,373 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:15:36,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 4509 transitions. [2019-10-13 21:15:36,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-13 21:15:36,399 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:36,399 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:36,609 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:36,610 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:36,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:36,610 INFO L82 PathProgramCache]: Analyzing trace with hash -585457696, now seen corresponding path program 1 times [2019-10-13 21:15:36,610 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:36,611 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095748909] [2019-10-13 21:15:36,611 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:36,611 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:36,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:36,920 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:36,921 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095748909] [2019-10-13 21:15:36,921 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681158315] [2019-10-13 21:15:36,921 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 21:15:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:37,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 2945 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:37,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:37,678 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:37,678 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:38,007 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:38,087 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:38,160 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:38,282 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:38,283 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:38,283 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-13 21:15:38,283 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437826298] [2019-10-13 21:15:38,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:15:38,284 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:38,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:15:38,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:38,285 INFO L87 Difference]: Start difference. First operand 2860 states and 4509 transitions. Second operand 15 states. [2019-10-13 21:15:39,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:39,621 INFO L93 Difference]: Finished difference Result 5614 states and 8894 transitions. [2019-10-13 21:15:39,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:39,622 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 232 [2019-10-13 21:15:39,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:39,640 INFO L225 Difference]: With dead ends: 5614 [2019-10-13 21:15:39,641 INFO L226 Difference]: Without dead ends: 2866 [2019-10-13 21:15:39,651 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 453 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:15:39,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2019-10-13 21:15:39,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2860. [2019-10-13 21:15:39,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2860 states. [2019-10-13 21:15:39,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 4507 transitions. [2019-10-13 21:15:39,780 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 4507 transitions. Word has length 232 [2019-10-13 21:15:39,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:39,781 INFO L462 AbstractCegarLoop]: Abstraction has 2860 states and 4507 transitions. [2019-10-13 21:15:39,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:15:39,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 4507 transitions. [2019-10-13 21:15:39,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-13 21:15:39,799 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:39,799 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:40,007 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:40,007 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:40,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:40,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1112432763, now seen corresponding path program 1 times [2019-10-13 21:15:40,008 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:40,008 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685969305] [2019-10-13 21:15:40,009 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:40,009 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:40,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:40,326 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:40,326 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685969305] [2019-10-13 21:15:40,327 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998257460] [2019-10-13 21:15:40,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:40,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:40,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:41,081 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:41,579 WARN L191 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-10-13 21:15:41,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:41,842 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:41,936 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:15:41,936 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:41,937 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-13 21:15:41,937 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694589985] [2019-10-13 21:15:41,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:15:41,940 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:41,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:15:41,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:15:41,941 INFO L87 Difference]: Start difference. First operand 2860 states and 4507 transitions. Second operand 12 states. [2019-10-13 21:15:43,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:43,215 INFO L93 Difference]: Finished difference Result 4123 states and 6386 transitions. [2019-10-13 21:15:43,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:15:43,215 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 233 [2019-10-13 21:15:43,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:43,226 INFO L225 Difference]: With dead ends: 4123 [2019-10-13 21:15:43,226 INFO L226 Difference]: Without dead ends: 2127 [2019-10-13 21:15:43,233 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 460 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:43,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2019-10-13 21:15:43,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 2127. [2019-10-13 21:15:43,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2127 states. [2019-10-13 21:15:43,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 3266 transitions. [2019-10-13 21:15:43,325 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 3266 transitions. Word has length 233 [2019-10-13 21:15:43,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:43,325 INFO L462 AbstractCegarLoop]: Abstraction has 2127 states and 3266 transitions. [2019-10-13 21:15:43,325 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:15:43,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 3266 transitions. [2019-10-13 21:15:43,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-13 21:15:43,337 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:43,337 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:43,544 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:43,545 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:43,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:43,546 INFO L82 PathProgramCache]: Analyzing trace with hash -2121934613, now seen corresponding path program 2 times [2019-10-13 21:15:43,546 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:43,546 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948769057] [2019-10-13 21:15:43,547 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:43,547 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:43,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:15:43,835 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948769057] [2019-10-13 21:15:43,836 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107948066] [2019-10-13 21:15:43,836 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:44,420 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:15:44,421 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:44,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 2300 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:15:44,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:15:44,626 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:45,051 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:45,051 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:45,052 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15] total 27 [2019-10-13 21:15:45,052 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091767213] [2019-10-13 21:15:45,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:15:45,053 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:45,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:15:45,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2019-10-13 21:15:45,054 INFO L87 Difference]: Start difference. First operand 2127 states and 3266 transitions. Second operand 14 states. [2019-10-13 21:15:47,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:47,303 INFO L93 Difference]: Finished difference Result 6797 states and 10571 transitions. [2019-10-13 21:15:47,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:15:47,303 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 234 [2019-10-13 21:15:47,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:47,339 INFO L225 Difference]: With dead ends: 6797 [2019-10-13 21:15:47,339 INFO L226 Difference]: Without dead ends: 6280 [2019-10-13 21:15:47,344 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 467 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=1534, Unknown=0, NotChecked=0, Total=1722 [2019-10-13 21:15:47,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6280 states.