java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec8_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:17:32,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:17:32,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:17:32,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:17:32,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:17:32,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:17:32,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:17:32,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:17:32,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:17:32,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:17:32,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:17:32,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:17:32,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:17:32,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:17:32,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:17:32,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:17:32,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:17:32,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:17:32,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:17:32,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:17:32,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:17:32,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:17:32,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:17:32,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:17:32,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:17:32,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:17:32,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:17:32,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:17:32,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:17:32,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:17:32,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:17:32,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:17:32,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:17:32,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:17:32,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:17:32,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:17:32,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:17:32,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:17:32,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:17:32,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:17:32,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:17:32,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:17:32,201 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:17:32,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:17:32,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:17:32,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:17:32,203 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:17:32,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:17:32,203 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:17:32,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:17:32,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:17:32,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:17:32,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:17:32,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:17:32,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:17:32,208 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:17:32,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:17:32,208 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:17:32,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:17:32,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:17:32,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:17:32,209 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:17:32,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:17:32,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:17:32,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:17:32,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:17:32,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:17:32,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:17:32,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:17:32,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:17:32,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:17:32,468 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:17:32,484 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:17:32,488 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:17:32,490 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:17:32,490 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:17:32,491 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product31.cil.c [2019-10-15 01:17:32,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33118f9b0/0e56bad32dbd41a2a7df4c287e29b0ab/FLAG7e38bfbc3 [2019-10-15 01:17:33,178 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:17:33,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product31.cil.c [2019-10-15 01:17:33,212 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33118f9b0/0e56bad32dbd41a2a7df4c287e29b0ab/FLAG7e38bfbc3 [2019-10-15 01:17:33,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33118f9b0/0e56bad32dbd41a2a7df4c287e29b0ab [2019-10-15 01:17:33,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:17:33,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:17:33,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:17:33,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:17:33,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:17:33,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:17:33" (1/1) ... [2019-10-15 01:17:33,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7492c7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:33, skipping insertion in model container [2019-10-15 01:17:33,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:17:33" (1/1) ... [2019-10-15 01:17:33,409 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:17:33,492 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:17:34,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:17:34,296 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:17:34,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:17:34,477 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:17:34,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34 WrapperNode [2019-10-15 01:17:34,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:17:34,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:17:34,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:17:34,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:17:34,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34" (1/1) ... [2019-10-15 01:17:34,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34" (1/1) ... [2019-10-15 01:17:34,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34" (1/1) ... [2019-10-15 01:17:34,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34" (1/1) ... [2019-10-15 01:17:34,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34" (1/1) ... [2019-10-15 01:17:34,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34" (1/1) ... [2019-10-15 01:17:34,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34" (1/1) ... [2019-10-15 01:17:34,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:17:34,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:17:34,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:17:34,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:17:34,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:17:34,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:17:34,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:17:34,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:17:34,779 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:17:34,779 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:17:34,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:17:34,781 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:17:34,782 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:17:34,782 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:17:34,783 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:17:34,783 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:17:34,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:17:34,784 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:17:34,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:17:34,785 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:17:34,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:17:34,788 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:17:34,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:17:34,789 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:17:34,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:17:34,789 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:17:34,790 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:17:34,790 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:17:34,790 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:17:34,790 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:17:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:17:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:17:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:17:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:17:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:17:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:17:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:17:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:17:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:17:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:17:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:17:34,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:17:34,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:17:34,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:17:34,794 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:17:34,794 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:17:34,794 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-10-15 01:17:34,794 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:17:34,794 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:17:34,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:17:34,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:17:34,795 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:17:34,795 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:17:34,795 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:17:34,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:17:34,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:17:34,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:17:34,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:17:34,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:17:34,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:17:34,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:17:34,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:17:34,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:17:34,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:17:34,797 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:17:34,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:17:34,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:17:34,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:17:34,798 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:17:34,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:17:34,799 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:17:34,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:17:34,799 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:17:34,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:17:34,799 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:17:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:17:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:17:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:17:34,801 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:17:34,801 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:17:34,801 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-15 01:17:34,801 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:17:34,801 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:17:34,802 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:17:34,802 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:17:34,802 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:17:34,803 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:17:34,803 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:17:34,803 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:17:34,803 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:17:34,804 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:17:34,804 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:17:34,805 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:17:34,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:17:34,805 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:17:34,805 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:17:34,806 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:17:34,806 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:17:34,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:17:34,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:17:34,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:17:34,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:17:34,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:17:34,807 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:17:34,807 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:17:34,807 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:17:34,807 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:17:34,807 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:17:34,807 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:17:34,807 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:17:34,807 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:17:34,808 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:17:34,808 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:17:34,808 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:17:34,808 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:17:34,808 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:17:34,808 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:17:34,809 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:17:34,809 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:17:34,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-15 01:17:34,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-15 01:17:34,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:17:34,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:17:34,810 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:17:34,810 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:17:34,811 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:17:34,811 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:17:34,811 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:17:34,811 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:17:34,812 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:17:34,812 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:17:34,812 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:17:34,813 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:17:34,813 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:17:34,813 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:17:34,813 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:17:34,814 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:17:34,814 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:17:34,814 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:17:34,814 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:17:34,815 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:17:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:17:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:17:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:17:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:17:34,821 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:17:34,821 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:17:34,821 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:17:34,822 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:17:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:17:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:17:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:17:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:17:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:17:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:17:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:17:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:17:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:17:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:17:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:17:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:17:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:17:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:17:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:17:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:17:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:17:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:17:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:17:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:17:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:17:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:17:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:17:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:17:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:17:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:17:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:17:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:17:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:17:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:17:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:17:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:17:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:17:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:17:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:17:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:17:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:17:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:17:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-10-15 01:17:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:17:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:17:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:17:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:17:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:17:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:17:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:17:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:17:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:17:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:17:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:17:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:17:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:17:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:17:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:17:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:17:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:17:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:17:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:17:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:17:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:17:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:17:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:17:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:17:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:17:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:17:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:17:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:17:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:17:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:17:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:17:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:17:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:17:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-15 01:17:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:17:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-15 01:17:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:17:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:17:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:17:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-15 01:17:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:17:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:17:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:17:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:17:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:17:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:17:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:17:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:17:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:17:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:17:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:17:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:17:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:17:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:17:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:17:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:17:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:17:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:17:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:17:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:17:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:17:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:17:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:17:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:17:37,093 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:17:37,093 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:17:37,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:17:37 BoogieIcfgContainer [2019-10-15 01:17:37,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:17:37,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:17:37,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:17:37,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:17:37,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:17:33" (1/3) ... [2019-10-15 01:17:37,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185885b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:17:37, skipping insertion in model container [2019-10-15 01:17:37,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34" (2/3) ... [2019-10-15 01:17:37,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185885b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:17:37, skipping insertion in model container [2019-10-15 01:17:37,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:17:37" (3/3) ... [2019-10-15 01:17:37,105 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product31.cil.c [2019-10-15 01:17:37,115 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:17:37,128 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:17:37,140 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:17:37,182 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:17:37,185 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:17:37,186 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:17:37,186 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:17:37,186 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:17:37,186 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:17:37,186 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:17:37,186 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:17:37,225 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states. [2019-10-15 01:17:37,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-15 01:17:37,263 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:37,265 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:37,269 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:37,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:37,276 INFO L82 PathProgramCache]: Analyzing trace with hash 718074113, now seen corresponding path program 1 times [2019-10-15 01:17:37,283 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:37,284 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950481815] [2019-10-15 01:17:37,284 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:37,284 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:37,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:37,906 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950481815] [2019-10-15 01:17:37,907 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:37,907 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:17:37,908 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103832315] [2019-10-15 01:17:37,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:17:37,915 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:37,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:17:37,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:17:37,933 INFO L87 Difference]: Start difference. First operand 562 states. Second operand 2 states. [2019-10-15 01:17:38,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:38,016 INFO L93 Difference]: Finished difference Result 866 states and 1134 transitions. [2019-10-15 01:17:38,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:17:38,025 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 158 [2019-10-15 01:17:38,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:38,068 INFO L225 Difference]: With dead ends: 866 [2019-10-15 01:17:38,068 INFO L226 Difference]: Without dead ends: 539 [2019-10-15 01:17:38,082 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:17:38,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2019-10-15 01:17:38,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2019-10-15 01:17:38,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2019-10-15 01:17:38,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 711 transitions. [2019-10-15 01:17:38,213 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 711 transitions. Word has length 158 [2019-10-15 01:17:38,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:38,215 INFO L462 AbstractCegarLoop]: Abstraction has 539 states and 711 transitions. [2019-10-15 01:17:38,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:17:38,215 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 711 transitions. [2019-10-15 01:17:38,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-15 01:17:38,221 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:38,221 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:38,221 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:38,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:38,222 INFO L82 PathProgramCache]: Analyzing trace with hash 95900195, now seen corresponding path program 1 times [2019-10-15 01:17:38,222 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:38,222 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485651590] [2019-10-15 01:17:38,223 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:38,223 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:38,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:38,522 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485651590] [2019-10-15 01:17:38,522 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:38,522 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:38,522 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269469022] [2019-10-15 01:17:38,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:38,532 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:38,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:38,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:38,533 INFO L87 Difference]: Start difference. First operand 539 states and 711 transitions. Second operand 3 states. [2019-10-15 01:17:38,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:38,629 INFO L93 Difference]: Finished difference Result 849 states and 1102 transitions. [2019-10-15 01:17:38,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:38,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-15 01:17:38,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:38,644 INFO L225 Difference]: With dead ends: 849 [2019-10-15 01:17:38,644 INFO L226 Difference]: Without dead ends: 542 [2019-10-15 01:17:38,647 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:38,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2019-10-15 01:17:38,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 541. [2019-10-15 01:17:38,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2019-10-15 01:17:38,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 713 transitions. [2019-10-15 01:17:38,739 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 713 transitions. Word has length 159 [2019-10-15 01:17:38,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:38,740 INFO L462 AbstractCegarLoop]: Abstraction has 541 states and 713 transitions. [2019-10-15 01:17:38,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:38,742 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 713 transitions. [2019-10-15 01:17:38,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-15 01:17:38,749 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:38,749 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:38,750 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:38,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:38,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1408661417, now seen corresponding path program 1 times [2019-10-15 01:17:38,750 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:38,751 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238056176] [2019-10-15 01:17:38,751 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:38,751 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:38,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:38,988 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238056176] [2019-10-15 01:17:38,988 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:38,988 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:38,989 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880878058] [2019-10-15 01:17:38,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:38,995 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:38,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:38,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:38,996 INFO L87 Difference]: Start difference. First operand 541 states and 713 transitions. Second operand 3 states. [2019-10-15 01:17:39,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:39,041 INFO L93 Difference]: Finished difference Result 1058 states and 1424 transitions. [2019-10-15 01:17:39,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:39,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-10-15 01:17:39,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:39,046 INFO L225 Difference]: With dead ends: 1058 [2019-10-15 01:17:39,046 INFO L226 Difference]: Without dead ends: 582 [2019-10-15 01:17:39,048 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:39,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2019-10-15 01:17:39,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 581. [2019-10-15 01:17:39,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2019-10-15 01:17:39,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 782 transitions. [2019-10-15 01:17:39,073 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 782 transitions. Word has length 165 [2019-10-15 01:17:39,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:39,073 INFO L462 AbstractCegarLoop]: Abstraction has 581 states and 782 transitions. [2019-10-15 01:17:39,074 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:39,074 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 782 transitions. [2019-10-15 01:17:39,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-15 01:17:39,078 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:39,078 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:39,078 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:39,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:39,079 INFO L82 PathProgramCache]: Analyzing trace with hash 476194519, now seen corresponding path program 1 times [2019-10-15 01:17:39,079 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:39,079 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146123150] [2019-10-15 01:17:39,079 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:39,080 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:39,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:17:39,279 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146123150] [2019-10-15 01:17:39,279 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:39,279 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:39,280 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621744847] [2019-10-15 01:17:39,280 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:39,280 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:39,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:39,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:39,281 INFO L87 Difference]: Start difference. First operand 581 states and 782 transitions. Second operand 3 states. [2019-10-15 01:17:39,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:39,343 INFO L93 Difference]: Finished difference Result 979 states and 1302 transitions. [2019-10-15 01:17:39,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:39,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2019-10-15 01:17:39,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:39,353 INFO L225 Difference]: With dead ends: 979 [2019-10-15 01:17:39,353 INFO L226 Difference]: Without dead ends: 674 [2019-10-15 01:17:39,355 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:39,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2019-10-15 01:17:39,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2019-10-15 01:17:39,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2019-10-15 01:17:39,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 905 transitions. [2019-10-15 01:17:39,406 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 905 transitions. Word has length 166 [2019-10-15 01:17:39,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:39,407 INFO L462 AbstractCegarLoop]: Abstraction has 674 states and 905 transitions. [2019-10-15 01:17:39,407 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:39,407 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 905 transitions. [2019-10-15 01:17:39,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2019-10-15 01:17:39,415 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:39,416 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:39,416 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:39,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:39,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1063434513, now seen corresponding path program 1 times [2019-10-15 01:17:39,417 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:39,418 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069044982] [2019-10-15 01:17:39,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:39,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:39,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 01:17:40,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069044982] [2019-10-15 01:17:40,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962479974] [2019-10-15 01:17:40,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:40,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 3484 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:17:40,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 01:17:41,244 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:42,064 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:17:42,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:42,281 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-15 01:17:42,456 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:17:42,456 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-15 01:17:42,456 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841342743] [2019-10-15 01:17:42,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:17:42,458 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:42,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:17:42,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:17:42,459 INFO L87 Difference]: Start difference. First operand 674 states and 905 transitions. Second operand 9 states. [2019-10-15 01:17:43,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:43,981 INFO L93 Difference]: Finished difference Result 1326 states and 1790 transitions. [2019-10-15 01:17:43,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:17:43,982 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 309 [2019-10-15 01:17:43,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:43,987 INFO L225 Difference]: With dead ends: 1326 [2019-10-15 01:17:43,987 INFO L226 Difference]: Without dead ends: 688 [2019-10-15 01:17:43,990 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 607 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:17:43,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2019-10-15 01:17:44,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2019-10-15 01:17:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2019-10-15 01:17:44,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 923 transitions. [2019-10-15 01:17:44,024 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 923 transitions. Word has length 309 [2019-10-15 01:17:44,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:44,025 INFO L462 AbstractCegarLoop]: Abstraction has 688 states and 923 transitions. [2019-10-15 01:17:44,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:17:44,025 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 923 transitions. [2019-10-15 01:17:44,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2019-10-15 01:17:44,031 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:44,031 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:44,240 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:44,241 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:44,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:44,241 INFO L82 PathProgramCache]: Analyzing trace with hash -343580685, now seen corresponding path program 1 times [2019-10-15 01:17:44,242 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:44,242 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844806368] [2019-10-15 01:17:44,243 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:44,243 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:44,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:44,897 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 01:17:44,898 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844806368] [2019-10-15 01:17:44,898 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544839680] [2019-10-15 01:17:44,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:45,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 3485 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:17:45,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:45,817 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 01:17:45,817 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:46,489 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:46,556 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:46,630 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-15 01:17:46,630 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:17:46,630 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-15 01:17:46,631 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307510759] [2019-10-15 01:17:46,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:17:46,632 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:46,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:17:46,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:17:46,632 INFO L87 Difference]: Start difference. First operand 688 states and 923 transitions. Second operand 7 states. [2019-10-15 01:17:48,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:48,202 INFO L93 Difference]: Finished difference Result 1327 states and 1794 transitions. [2019-10-15 01:17:48,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:17:48,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2019-10-15 01:17:48,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:48,209 INFO L225 Difference]: With dead ends: 1327 [2019-10-15 01:17:48,210 INFO L226 Difference]: Without dead ends: 690 [2019-10-15 01:17:48,214 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 614 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:17:48,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-10-15 01:17:48,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2019-10-15 01:17:48,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2019-10-15 01:17:48,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 926 transitions. [2019-10-15 01:17:48,266 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 926 transitions. Word has length 310 [2019-10-15 01:17:48,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:48,267 INFO L462 AbstractCegarLoop]: Abstraction has 690 states and 926 transitions. [2019-10-15 01:17:48,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:17:48,267 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 926 transitions. [2019-10-15 01:17:48,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2019-10-15 01:17:48,275 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:48,276 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:48,489 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:48,489 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:48,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:48,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1252874735, now seen corresponding path program 1 times [2019-10-15 01:17:48,490 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:48,490 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128931051] [2019-10-15 01:17:48,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:48,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:48,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 01:17:49,026 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128931051] [2019-10-15 01:17:49,026 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160848031] [2019-10-15 01:17:49,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:49,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 3486 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:17:49,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:17:50,089 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:50,742 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:17:50,842 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:50,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:51,095 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-15 01:17:51,096 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:17:51,096 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-15 01:17:51,096 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023444414] [2019-10-15 01:17:51,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:17:51,098 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:51,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:17:51,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-15 01:17:51,099 INFO L87 Difference]: Start difference. First operand 690 states and 926 transitions. Second operand 16 states. [2019-10-15 01:17:53,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:53,333 INFO L93 Difference]: Finished difference Result 1331 states and 1794 transitions. [2019-10-15 01:17:53,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:17:53,335 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 311 [2019-10-15 01:17:53,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:53,340 INFO L225 Difference]: With dead ends: 1331 [2019-10-15 01:17:53,340 INFO L226 Difference]: Without dead ends: 702 [2019-10-15 01:17:53,343 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 611 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-15 01:17:53,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-15 01:17:53,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 700. [2019-10-15 01:17:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-10-15 01:17:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 937 transitions. [2019-10-15 01:17:53,376 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 937 transitions. Word has length 311 [2019-10-15 01:17:53,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:53,377 INFO L462 AbstractCegarLoop]: Abstraction has 700 states and 937 transitions. [2019-10-15 01:17:53,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:17:53,377 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 937 transitions. [2019-10-15 01:17:53,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2019-10-15 01:17:53,381 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:53,382 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:17:53,599 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:53,600 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:53,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:53,600 INFO L82 PathProgramCache]: Analyzing trace with hash -2090674233, now seen corresponding path program 2 times [2019-10-15 01:17:53,600 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:53,601 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033698434] [2019-10-15 01:17:53,601 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:53,601 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:53,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:54,109 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-10-15 01:17:54,110 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033698434] [2019-10-15 01:17:54,110 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039930581] [2019-10-15 01:17:54,110 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:54,884 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:17:54,885 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:17:54,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 2440 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:17:54,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:17:55,206 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:55,996 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:56,068 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 01:17:56,175 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:17:56,175 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-15 01:17:56,175 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000410038] [2019-10-15 01:17:56,176 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:17:56,176 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:56,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:17:56,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:17:56,178 INFO L87 Difference]: Start difference. First operand 700 states and 937 transitions. Second operand 12 states. [2019-10-15 01:17:57,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:57,739 INFO L93 Difference]: Finished difference Result 1322 states and 1782 transitions. [2019-10-15 01:17:57,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:17:57,740 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 312 [2019-10-15 01:17:57,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:57,744 INFO L225 Difference]: With dead ends: 1322 [2019-10-15 01:17:57,744 INFO L226 Difference]: Without dead ends: 702 [2019-10-15 01:17:57,748 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 618 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:17:57,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-15 01:17:57,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 700. [2019-10-15 01:17:57,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-10-15 01:17:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 936 transitions. [2019-10-15 01:17:57,784 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 936 transitions. Word has length 312 [2019-10-15 01:17:57,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:57,785 INFO L462 AbstractCegarLoop]: Abstraction has 700 states and 936 transitions. [2019-10-15 01:17:57,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:17:57,786 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 936 transitions. [2019-10-15 01:17:57,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2019-10-15 01:17:57,790 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:57,790 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:17:57,996 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:57,997 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:57,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:57,998 INFO L82 PathProgramCache]: Analyzing trace with hash 443053049, now seen corresponding path program 3 times [2019-10-15 01:17:57,999 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:57,999 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818860828] [2019-10-15 01:17:58,000 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:58,000 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:58,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-15 01:17:58,528 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818860828] [2019-10-15 01:17:58,528 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779209277] [2019-10-15 01:17:58,528 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:59,212 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-15 01:17:59,212 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:17:59,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:17:59,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:17:59,529 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:00,136 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:00,218 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:00,291 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:00,443 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 01:18:00,443 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:00,443 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-15 01:18:00,443 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741945828] [2019-10-15 01:18:00,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:18:00,444 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:00,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:18:00,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:00,445 INFO L87 Difference]: Start difference. First operand 700 states and 936 transitions. Second operand 15 states. [2019-10-15 01:18:02,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:02,399 INFO L93 Difference]: Finished difference Result 1329 states and 1789 transitions. [2019-10-15 01:18:02,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:18:02,400 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 313 [2019-10-15 01:18:02,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:02,409 INFO L225 Difference]: With dead ends: 1329 [2019-10-15 01:18:02,409 INFO L226 Difference]: Without dead ends: 704 [2019-10-15 01:18:02,412 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 615 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-15 01:18:02,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2019-10-15 01:18:02,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 700. [2019-10-15 01:18:02,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-10-15 01:18:02,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 935 transitions. [2019-10-15 01:18:02,447 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 935 transitions. Word has length 313 [2019-10-15 01:18:02,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:02,451 INFO L462 AbstractCegarLoop]: Abstraction has 700 states and 935 transitions. [2019-10-15 01:18:02,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:18:02,451 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 935 transitions. [2019-10-15 01:18:02,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2019-10-15 01:18:02,455 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:02,455 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:18:02,671 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:02,671 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:02,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:02,672 INFO L82 PathProgramCache]: Analyzing trace with hash -616805140, now seen corresponding path program 1 times [2019-10-15 01:18:02,672 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:02,672 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123261624] [2019-10-15 01:18:02,673 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:02,673 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:02,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:03,160 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-15 01:18:03,161 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123261624] [2019-10-15 01:18:03,161 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200927971] [2019-10-15 01:18:03,161 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 [2019-10-15 01:18:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:04,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 3489 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:04,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:18:04,218 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:04,817 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:04,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:05,133 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 01:18:05,133 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:05,134 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 31 [2019-10-15 01:18:05,134 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610739869] [2019-10-15 01:18:05,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:18:05,135 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:05,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:18:05,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:18:05,136 INFO L87 Difference]: Start difference. First operand 700 states and 935 transitions. Second operand 11 states. [2019-10-15 01:18:07,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:07,091 INFO L93 Difference]: Finished difference Result 1326 states and 1786 transitions. [2019-10-15 01:18:07,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:18:07,096 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 314 [2019-10-15 01:18:07,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:07,101 INFO L225 Difference]: With dead ends: 1326 [2019-10-15 01:18:07,101 INFO L226 Difference]: Without dead ends: 706 [2019-10-15 01:18:07,104 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 622 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2019-10-15 01:18:07,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2019-10-15 01:18:07,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 702. [2019-10-15 01:18:07,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2019-10-15 01:18:07,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 938 transitions. [2019-10-15 01:18:07,130 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 938 transitions. Word has length 314 [2019-10-15 01:18:07,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:07,131 INFO L462 AbstractCegarLoop]: Abstraction has 702 states and 938 transitions. [2019-10-15 01:18:07,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:18:07,131 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 938 transitions. [2019-10-15 01:18:07,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2019-10-15 01:18:07,134 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:07,135 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:07,343 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:07,344 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:07,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:07,345 INFO L82 PathProgramCache]: Analyzing trace with hash 2114759373, now seen corresponding path program 1 times [2019-10-15 01:18:07,345 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:07,346 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577120802] [2019-10-15 01:18:07,346 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:07,346 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:07,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat