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_spec3_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:14:52,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:14:52,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:14:52,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:14:52,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:14:52,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:14:52,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:14:52,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:14:52,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:14:52,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:14:52,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:14:52,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:14:52,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:14:52,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:14:52,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:14:52,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:14:52,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:14:52,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:14:52,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:14:52,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:14:52,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:14:52,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:14:52,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:14:52,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:14:52,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:14:52,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:14:52,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:14:52,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:14:52,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:14:52,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:14:52,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:14:52,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:14:52,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:14:52,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:14:52,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:14:52,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:14:52,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:14:52,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:14:52,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:14:52,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:14:52,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:14:52,554 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 01:14:52,574 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:14:52,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:14:52,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:14:52,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:14:52,576 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:14:52,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:14:52,577 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:14:52,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:14:52,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:14:52,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:14:52,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:14:52,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:14:52,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:14:52,578 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:14:52,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:14:52,578 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:14:52,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:14:52,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:14:52,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:14:52,579 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:14:52,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:14:52,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:52,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:14:52,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:14:52,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:14:52,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:14:52,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:14:52,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:14:52,581 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 01:14:52,872 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:14:52,894 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:14:52,898 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:14:52,900 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:14:52,900 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:14:52,901 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product28.cil.c [2019-10-15 01:14:52,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4682b5a65/3748eec6e7f349b5b22776f52efbe8e1/FLAGbe0c5a6e4 [2019-10-15 01:14:53,647 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:14:53,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product28.cil.c [2019-10-15 01:14:53,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4682b5a65/3748eec6e7f349b5b22776f52efbe8e1/FLAGbe0c5a6e4 [2019-10-15 01:14:53,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4682b5a65/3748eec6e7f349b5b22776f52efbe8e1 [2019-10-15 01:14:53,789 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:14:53,791 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:14:53,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:53,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:14:53,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:14:53,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:53" (1/1) ... [2019-10-15 01:14:53,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ef6259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:53, skipping insertion in model container [2019-10-15 01:14:53,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:53" (1/1) ... [2019-10-15 01:14:53,807 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:14:53,875 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:14:54,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:54,675 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:14:54,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:54,951 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:14:54,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:54 WrapperNode [2019-10-15 01:14:54,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:54,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:14:54,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:14:54,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:14:54,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:54" (1/1) ... [2019-10-15 01:14:54,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:54" (1/1) ... [2019-10-15 01:14:55,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:54" (1/1) ... [2019-10-15 01:14:55,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:54" (1/1) ... [2019-10-15 01:14:55,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:54" (1/1) ... [2019-10-15 01:14:55,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:54" (1/1) ... [2019-10-15 01:14:55,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:54" (1/1) ... [2019-10-15 01:14:55,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:14:55,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:14:55,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:14:55,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:14:55,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:54" (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 01:14:55,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:14:55,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:14:55,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:55,239 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:14:55,239 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-10-15 01:14:55,239 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:14:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:14:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:14:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:14:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:14:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:14:55,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-15 01:14:55,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-15 01:14:55,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:14:55,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:55,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:55,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:55,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:14:55,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:14:55,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:14:55,243 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:14:55,243 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:14:55,244 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:14:55,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:14:55,244 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:14:55,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:14:55,244 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:14:55,245 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:14:55,245 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:14:55,245 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:14:55,245 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:14:55,245 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:14:55,246 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:14:55,246 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:14:55,246 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:14:55,246 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:14:55,246 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:14:55,247 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:14:55,247 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:14:55,247 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:14:55,247 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:14:55,247 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:14:55,247 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:14:55,248 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:14:55,248 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:14:55,248 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:14:55,248 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:14:55,248 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:14:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:14:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:14:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:14:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:14:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:14:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:14:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:14:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:14:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:14:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:14:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:14:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:14:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:14:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:14:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:14:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:14:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:14:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:14:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:14:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:14:55,253 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:14:55,253 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:14:55,253 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:14:55,253 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:14:55,253 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:14:55,254 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:14:55,254 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:14:55,254 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:14:55,254 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:14:55,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:14:55,254 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:14:55,255 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:14:55,255 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:14:55,255 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:14:55,255 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:14:55,255 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:14:55,255 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:14:55,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:14:55,256 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:14:55,256 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:14:55,256 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:14:55,256 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:14:55,256 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:14:55,256 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:14:55,257 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:14:55,257 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:14:55,257 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:14:55,257 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-15 01:14:55,257 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:14:55,257 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:14:55,257 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:14:55,258 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:14:55,258 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:14:55,258 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:14:55,258 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:14:55,258 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:14:55,258 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:14:55,259 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:14:55,259 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:14:55,259 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:14:55,259 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:14:55,259 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:14:55,259 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:14:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:14:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:14:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:14:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:14:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:14:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:14:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:14:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:14:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:14:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:14:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:14:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:14:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:14:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:14:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:14:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:14:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:14:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:14:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:14:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-10-15 01:14:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:14:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:14:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:14:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:14:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:14:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:14:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-15 01:14:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-15 01:14:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:14:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:14:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:14:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:14:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:14:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:14:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:14:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:14:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:14:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:14:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:14:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:14:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:14:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:14:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:14:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:14:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:14:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:14:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:14:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:14:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:14:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:14:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:14:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:14:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:14:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:14:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:14:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:14:55,269 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:14:55,269 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:14:55,269 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:14:55,269 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:14:55,269 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:14:55,269 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:14:55,269 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:14:55,270 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:14:55,270 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:14:55,270 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:14:55,270 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:14:55,270 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:14:55,270 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:14:55,270 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:14:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:14:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:14:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:14:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:14:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:14:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:14:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:14:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:14:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:14:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:14:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:14:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:14:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:14:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:14:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:14:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:14:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:14:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:14:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:14:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:14:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:14:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:14:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:14:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:14:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:14:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:14:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:14:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:14:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:14:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:14:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:14:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:14:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:14:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:14:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:14:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:14:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:14:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:14:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:14:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:14:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:14:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:14:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:14:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:14:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:14:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:14:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-15 01:14:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:14:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:14:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:14:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:14:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:14:57,529 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:14:57,529 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:14:57,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:57 BoogieIcfgContainer [2019-10-15 01:14:57,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:14:57,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:14:57,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:14:57,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:14:57,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:14:53" (1/3) ... [2019-10-15 01:14:57,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41eb5730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:57, skipping insertion in model container [2019-10-15 01:14:57,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:54" (2/3) ... [2019-10-15 01:14:57,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41eb5730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:57, skipping insertion in model container [2019-10-15 01:14:57,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:57" (3/3) ... [2019-10-15 01:14:57,542 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product28.cil.c [2019-10-15 01:14:57,553 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:14:57,564 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:14:57,577 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:14:57,623 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:14:57,624 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:14:57,624 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:14:57,624 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:14:57,624 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:14:57,624 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:14:57,624 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:14:57,624 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:14:57,667 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states. [2019-10-15 01:14:57,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-15 01:14:57,708 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:57,710 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:57,714 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:57,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:57,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1535758530, now seen corresponding path program 1 times [2019-10-15 01:14:57,741 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:57,742 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47232933] [2019-10-15 01:14:57,742 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:57,743 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:57,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:58,445 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47232933] [2019-10-15 01:14:58,446 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:58,446 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:14:58,447 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50271627] [2019-10-15 01:14:58,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:14:58,457 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:58,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:14:58,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:14:58,476 INFO L87 Difference]: Start difference. First operand 521 states. Second operand 2 states. [2019-10-15 01:14:58,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:58,602 INFO L93 Difference]: Finished difference Result 739 states and 985 transitions. [2019-10-15 01:14:58,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:14:58,604 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 195 [2019-10-15 01:14:58,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:58,641 INFO L225 Difference]: With dead ends: 739 [2019-10-15 01:14:58,642 INFO L226 Difference]: Without dead ends: 470 [2019-10-15 01:14:58,653 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 01:14:58,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-10-15 01:14:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2019-10-15 01:14:58,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2019-10-15 01:14:58,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 627 transitions. [2019-10-15 01:14:58,768 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 627 transitions. Word has length 195 [2019-10-15 01:14:58,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:58,770 INFO L462 AbstractCegarLoop]: Abstraction has 470 states and 627 transitions. [2019-10-15 01:14:58,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:14:58,770 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 627 transitions. [2019-10-15 01:14:58,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-15 01:14:58,781 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:58,781 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:58,782 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:58,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:58,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1501610490, now seen corresponding path program 1 times [2019-10-15 01:14:58,784 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:58,784 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471713213] [2019-10-15 01:14:58,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:58,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:58,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:59,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471713213] [2019-10-15 01:14:59,041 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:59,042 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:59,042 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747242619] [2019-10-15 01:14:59,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:59,046 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:59,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:59,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:59,047 INFO L87 Difference]: Start difference. First operand 470 states and 627 transitions. Second operand 3 states. [2019-10-15 01:14:59,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:59,131 INFO L93 Difference]: Finished difference Result 722 states and 948 transitions. [2019-10-15 01:14:59,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:59,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-10-15 01:14:59,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:59,136 INFO L225 Difference]: With dead ends: 722 [2019-10-15 01:14:59,136 INFO L226 Difference]: Without dead ends: 473 [2019-10-15 01:14:59,138 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 01:14:59,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2019-10-15 01:14:59,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 472. [2019-10-15 01:14:59,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2019-10-15 01:14:59,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 629 transitions. [2019-10-15 01:14:59,175 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 629 transitions. Word has length 196 [2019-10-15 01:14:59,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:59,176 INFO L462 AbstractCegarLoop]: Abstraction has 472 states and 629 transitions. [2019-10-15 01:14:59,176 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:59,176 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 629 transitions. [2019-10-15 01:14:59,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-15 01:14:59,180 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:59,181 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:14:59,181 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:59,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:59,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1703734010, now seen corresponding path program 1 times [2019-10-15 01:14:59,182 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:59,182 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982815045] [2019-10-15 01:14:59,182 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:59,182 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:59,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:59,378 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982815045] [2019-10-15 01:14:59,378 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:59,378 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:59,378 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737013613] [2019-10-15 01:14:59,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:59,379 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:59,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:59,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:59,380 INFO L87 Difference]: Start difference. First operand 472 states and 629 transitions. Second operand 3 states. [2019-10-15 01:14:59,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:59,423 INFO L93 Difference]: Finished difference Result 918 states and 1253 transitions. [2019-10-15 01:14:59,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:59,424 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2019-10-15 01:14:59,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:59,429 INFO L225 Difference]: With dead ends: 918 [2019-10-15 01:14:59,429 INFO L226 Difference]: Without dead ends: 511 [2019-10-15 01:14:59,432 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 01:14:59,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2019-10-15 01:14:59,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 510. [2019-10-15 01:14:59,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2019-10-15 01:14:59,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 695 transitions. [2019-10-15 01:14:59,465 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 695 transitions. Word has length 202 [2019-10-15 01:14:59,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:59,466 INFO L462 AbstractCegarLoop]: Abstraction has 510 states and 695 transitions. [2019-10-15 01:14:59,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:59,467 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 695 transitions. [2019-10-15 01:14:59,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-15 01:14:59,473 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:59,473 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:59,474 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:59,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:59,474 INFO L82 PathProgramCache]: Analyzing trace with hash -940076344, now seen corresponding path program 1 times [2019-10-15 01:14:59,475 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:59,475 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117638345] [2019-10-15 01:14:59,475 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:59,476 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:59,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:00,146 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:15:00,147 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117638345] [2019-10-15 01:15:00,147 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775169164] [2019-10-15 01:15:00,147 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 01:15:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:00,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:00,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:01,256 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:01,257 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:01,655 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:01,758 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:01,854 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:02,033 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:02,033 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-15 01:15:02,033 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86986980] [2019-10-15 01:15:02,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:15:02,035 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:02,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:15:02,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:15:02,036 INFO L87 Difference]: Start difference. First operand 510 states and 695 transitions. Second operand 9 states. [2019-10-15 01:15:04,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:04,379 INFO L93 Difference]: Finished difference Result 998 states and 1370 transitions. [2019-10-15 01:15:04,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:15:04,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 203 [2019-10-15 01:15:04,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:04,384 INFO L225 Difference]: With dead ends: 998 [2019-10-15 01:15:04,384 INFO L226 Difference]: Without dead ends: 524 [2019-10-15 01:15:04,386 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 393 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:15:04,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2019-10-15 01:15:04,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2019-10-15 01:15:04,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2019-10-15 01:15:04,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 713 transitions. [2019-10-15 01:15:04,416 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 713 transitions. Word has length 203 [2019-10-15 01:15:04,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:04,417 INFO L462 AbstractCegarLoop]: Abstraction has 524 states and 713 transitions. [2019-10-15 01:15:04,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:15:04,417 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 713 transitions. [2019-10-15 01:15:04,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-15 01:15:04,421 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:04,422 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:04,629 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:04,630 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:04,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:04,631 INFO L82 PathProgramCache]: Analyzing trace with hash -857353803, now seen corresponding path program 1 times [2019-10-15 01:15:04,631 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:04,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723667798] [2019-10-15 01:15:04,632 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:04,632 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:04,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:15:05,120 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723667798] [2019-10-15 01:15:05,120 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371416690] [2019-10-15 01:15:05,121 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 01:15:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:05,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:05,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:05,904 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:06,256 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:06,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:06,396 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:06,397 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-15 01:15:06,397 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852676127] [2019-10-15 01:15:06,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:06,399 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:06,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:06,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:15:06,401 INFO L87 Difference]: Start difference. First operand 524 states and 713 transitions. Second operand 7 states. [2019-10-15 01:15:07,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:07,472 INFO L93 Difference]: Finished difference Result 999 states and 1374 transitions. [2019-10-15 01:15:07,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:15:07,474 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2019-10-15 01:15:07,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:07,478 INFO L225 Difference]: With dead ends: 999 [2019-10-15 01:15:07,479 INFO L226 Difference]: Without dead ends: 526 [2019-10-15 01:15:07,481 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 400 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-15 01:15:07,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2019-10-15 01:15:07,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2019-10-15 01:15:07,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2019-10-15 01:15:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 716 transitions. [2019-10-15 01:15:07,507 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 716 transitions. Word has length 204 [2019-10-15 01:15:07,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:07,507 INFO L462 AbstractCegarLoop]: Abstraction has 526 states and 716 transitions. [2019-10-15 01:15:07,507 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:07,508 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 716 transitions. [2019-10-15 01:15:07,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-15 01:15:07,512 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:07,513 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:07,723 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:07,723 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:07,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:07,724 INFO L82 PathProgramCache]: Analyzing trace with hash 664623728, now seen corresponding path program 1 times [2019-10-15 01:15:07,725 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:07,725 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133215910] [2019-10-15 01:15:07,725 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:07,725 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:07,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:15:08,105 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133215910] [2019-10-15 01:15:08,105 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017677026] [2019-10-15 01:15:08,105 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 01:15:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:08,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 2710 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:08,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:08,954 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:15:08,954 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:09,340 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:09,414 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:09,491 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:09,633 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:09,634 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-15 01:15:09,634 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699945820] [2019-10-15 01:15:09,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:15:09,635 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:09,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:15:09,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:15:09,637 INFO L87 Difference]: Start difference. First operand 526 states and 716 transitions. Second operand 16 states. [2019-10-15 01:15:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:11,654 INFO L93 Difference]: Finished difference Result 1003 states and 1374 transitions. [2019-10-15 01:15:11,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:11,655 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 205 [2019-10-15 01:15:11,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:11,658 INFO L225 Difference]: With dead ends: 1003 [2019-10-15 01:15:11,659 INFO L226 Difference]: Without dead ends: 538 [2019-10-15 01:15:11,661 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 397 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-15 01:15:11,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2019-10-15 01:15:11,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2019-10-15 01:15:11,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2019-10-15 01:15:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 727 transitions. [2019-10-15 01:15:11,688 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 727 transitions. Word has length 205 [2019-10-15 01:15:11,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:11,689 INFO L462 AbstractCegarLoop]: Abstraction has 536 states and 727 transitions. [2019-10-15 01:15:11,689 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:15:11,689 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 727 transitions. [2019-10-15 01:15:11,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-10-15 01:15:11,694 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:11,694 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:11,909 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:11,910 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:11,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:11,911 INFO L82 PathProgramCache]: Analyzing trace with hash -2034447971, now seen corresponding path program 2 times [2019-10-15 01:15:11,912 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:11,912 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38647687] [2019-10-15 01:15:11,912 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:11,913 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:11,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:12,378 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:12,379 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38647687] [2019-10-15 01:15:12,379 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812375352] [2019-10-15 01:15:12,379 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 01:15:12,967 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:15:12,967 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:12,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 2153 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:15:12,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:13,251 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:15:13,781 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:13,781 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-15 01:15:13,781 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128312107] [2019-10-15 01:15:13,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:15:13,785 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:13,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:15:13,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:15:13,787 INFO L87 Difference]: Start difference. First operand 536 states and 727 transitions. Second operand 14 states. [2019-10-15 01:15:15,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:15,794 INFO L93 Difference]: Finished difference Result 1771 states and 2441 transitions. [2019-10-15 01:15:15,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:15:15,795 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 206 [2019-10-15 01:15:15,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:15,811 INFO L225 Difference]: With dead ends: 1771 [2019-10-15 01:15:15,812 INFO L226 Difference]: Without dead ends: 1540 [2019-10-15 01:15:15,816 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 408 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-15 01:15:15,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2019-10-15 01:15:15,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1255. [2019-10-15 01:15:15,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2019-10-15 01:15:15,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1763 transitions. [2019-10-15 01:15:15,913 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1763 transitions. Word has length 206 [2019-10-15 01:15:15,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:15,914 INFO L462 AbstractCegarLoop]: Abstraction has 1255 states and 1763 transitions. [2019-10-15 01:15:15,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:15:15,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1763 transitions. [2019-10-15 01:15:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-15 01:15:15,923 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:15,923 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:16,138 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:16,139 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:16,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:16,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1383757944, now seen corresponding path program 1 times [2019-10-15 01:15:16,140 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:16,141 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860695301] [2019-10-15 01:15:16,141 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:16,141 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:16,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:16,492 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:16,492 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860695301] [2019-10-15 01:15:16,492 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124969049] [2019-10-15 01:15:16,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:17,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:17,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:17,228 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:15:17,228 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:17,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:17,622 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:17,697 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:17,849 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:17,850 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:17,850 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-15 01:15:17,851 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791676228] [2019-10-15 01:15:17,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:15:17,854 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:17,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:15:17,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:15:17,855 INFO L87 Difference]: Start difference. First operand 1255 states and 1763 transitions. Second operand 15 states. [2019-10-15 01:15:19,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:19,345 INFO L93 Difference]: Finished difference Result 2404 states and 3402 transitions. [2019-10-15 01:15:19,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:19,345 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 207 [2019-10-15 01:15:19,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:19,354 INFO L225 Difference]: With dead ends: 2404 [2019-10-15 01:15:19,355 INFO L226 Difference]: Without dead ends: 1261 [2019-10-15 01:15:19,359 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 401 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:15:19,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2019-10-15 01:15:19,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1255. [2019-10-15 01:15:19,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2019-10-15 01:15:19,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1761 transitions. [2019-10-15 01:15:19,417 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1761 transitions. Word has length 207 [2019-10-15 01:15:19,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:19,417 INFO L462 AbstractCegarLoop]: Abstraction has 1255 states and 1761 transitions. [2019-10-15 01:15:19,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:15:19,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1761 transitions. [2019-10-15 01:15:19,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-10-15 01:15:19,425 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:19,425 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:19,633 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:19,633 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:19,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:19,634 INFO L82 PathProgramCache]: Analyzing trace with hash 615144256, now seen corresponding path program 1 times [2019-10-15 01:15:19,636 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:19,639 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675812177] [2019-10-15 01:15:19,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:19,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:19,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:19,890 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675812177] [2019-10-15 01:15:19,890 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967577795] [2019-10-15 01:15:19,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:15:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:20,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:20,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:15:20,639 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:20,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:20,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:15:21,006 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:21,007 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-15 01:15:21,007 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122116856] [2019-10-15 01:15:21,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:15:21,008 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:21,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:15:21,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:15:21,008 INFO L87 Difference]: Start difference. First operand 1255 states and 1761 transitions. Second operand 12 states. [2019-10-15 01:15:22,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:22,824 INFO L93 Difference]: Finished difference Result 1957 states and 2712 transitions. [2019-10-15 01:15:22,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:15:22,824 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 208 [2019-10-15 01:15:22,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:22,829 INFO L225 Difference]: With dead ends: 1957 [2019-10-15 01:15:22,829 INFO L226 Difference]: Without dead ends: 1044 [2019-10-15 01:15:22,833 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 408 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:15:22,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2019-10-15 01:15:22,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1044. [2019-10-15 01:15:22,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1044 states. [2019-10-15 01:15:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1429 transitions. [2019-10-15 01:15:22,882 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1429 transitions. Word has length 208 [2019-10-15 01:15:22,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:22,882 INFO L462 AbstractCegarLoop]: Abstraction has 1044 states and 1429 transitions. [2019-10-15 01:15:22,883 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:15:22,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1429 transitions. [2019-10-15 01:15:22,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-15 01:15:22,887 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:22,888 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:23,096 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:23,096 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:23,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:23,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1383633511, now seen corresponding path program 2 times [2019-10-15 01:15:23,097 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:23,098 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021284482] [2019-10-15 01:15:23,098 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:23,098 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:23,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:15:23,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021284482] [2019-10-15 01:15:23,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888334377] [2019-10-15 01:15:23,420 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:23,974 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:15:23,975 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:23,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 2156 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:15:23,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:24,122 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:24,627 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:15:24,628 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:24,628 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15] total 27 [2019-10-15 01:15:24,628 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271344051] [2019-10-15 01:15:24,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:15:24,629 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:24,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:15:24,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2019-10-15 01:15:24,630 INFO L87 Difference]: Start difference. First operand 1044 states and 1429 transitions. Second operand 14 states. [2019-10-15 01:15:27,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:27,207 INFO L93 Difference]: Finished difference Result 3499 states and 4865 transitions. [2019-10-15 01:15:27,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:15:27,208 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 209 [2019-10-15 01:15:27,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:27,227 INFO L225 Difference]: With dead ends: 3499 [2019-10-15 01:15:27,227 INFO L226 Difference]: Without dead ends: 3031 [2019-10-15 01:15:27,231 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 415 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=1534, Unknown=0, NotChecked=0, Total=1722 [2019-10-15 01:15:27,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2019-10-15 01:15:27,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 2461. [2019-10-15 01:15:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2461 states. [2019-10-15 01:15:27,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 3494 transitions. [2019-10-15 01:15:27,372 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 3494 transitions. Word has length 209 [2019-10-15 01:15:27,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:27,373 INFO L462 AbstractCegarLoop]: Abstraction has 2461 states and 3494 transitions. [2019-10-15 01:15:27,373 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:15:27,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 3494 transitions. [2019-10-15 01:15:27,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-15 01:15:27,385 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:27,385 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:15:27,594 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:27,594 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:27,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:27,595 INFO L82 PathProgramCache]: Analyzing trace with hash -938187755, now seen corresponding path program 1 times [2019-10-15 01:15:27,596 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:27,596 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900568135] [2019-10-15 01:15:27,596 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:27,597 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:27,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:27,731 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:15:27,731 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900568135] [2019-10-15 01:15:27,732 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879293570] [2019-10-15 01:15:27,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:28,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 2714 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:28,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:28,527 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:28,527 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:28,782 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:28,819 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:28,851 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:15:28,851 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:28,852 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:15:28,852 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5407289] [2019-10-15 01:15:28,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:28,852 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:28,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:28,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:15:28,853 INFO L87 Difference]: Start difference. First operand 2461 states and 3494 transitions. Second operand 7 states.