java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:16:33,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:16:33,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:16:33,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:16:33,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:16:33,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:16:33,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:16:33,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:16:33,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:16:33,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:16:33,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:16:33,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:16:33,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:16:33,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:16:33,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:16:33,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:16:33,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:16:33,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:16:33,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:16:33,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:16:33,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:16:33,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:16:33,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:16:33,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:16:33,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:16:33,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:16:33,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:16:33,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:16:33,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:16:33,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:16:33,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:16:33,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:16:33,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:16:33,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:16:33,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:16:33,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:16:33,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:16:33,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:16:33,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:16:33,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:16:33,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:16:33,847 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:16:33,861 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:16:33,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:16:33,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:16:33,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:16:33,863 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:16:33,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:16:33,864 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:16:33,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:16:33,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:16:33,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:16:33,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:16:33,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:16:33,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:16:33,865 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:16:33,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:16:33,866 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:16:33,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:16:33,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:16:33,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:16:33,867 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:16:33,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:16:33,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:16:33,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:16:33,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:16:33,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:16:33,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:16:33,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:16:33,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:16:33,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:16:34,195 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:16:34,209 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:16:34,213 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:16:34,214 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:16:34,215 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:16:34,215 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product31.cil.c [2019-10-13 21:16:34,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c616ef5e8/27f25d4cb5a14687acfe4afa4656efe6/FLAGeba40ab46 [2019-10-13 21:16:34,930 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:16:34,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product31.cil.c [2019-10-13 21:16:34,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c616ef5e8/27f25d4cb5a14687acfe4afa4656efe6/FLAGeba40ab46 [2019-10-13 21:16:35,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c616ef5e8/27f25d4cb5a14687acfe4afa4656efe6 [2019-10-13 21:16:35,156 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:16:35,158 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:16:35,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:35,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:16:35,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:16:35,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:35" (1/1) ... [2019-10-13 21:16:35,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bddbf7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:35, skipping insertion in model container [2019-10-13 21:16:35,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:35" (1/1) ... [2019-10-13 21:16:35,177 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:16:35,248 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:16:36,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:36,032 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:16:36,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:36,363 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:16:36,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:36 WrapperNode [2019-10-13 21:16:36,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:36,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:16:36,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:16:36,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:16:36,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:36" (1/1) ... [2019-10-13 21:16:36,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:36" (1/1) ... [2019-10-13 21:16:36,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:36" (1/1) ... [2019-10-13 21:16:36,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:36" (1/1) ... [2019-10-13 21:16:36,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:36" (1/1) ... [2019-10-13 21:16:36,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:36" (1/1) ... [2019-10-13 21:16:36,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:36" (1/1) ... [2019-10-13 21:16:36,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:16:36,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:16:36,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:16:36,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:16:36,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:16:36,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:16:36,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:16:36,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:36,679 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:16:36,679 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:16:36,680 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:16:36,680 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:16:36,681 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:16:36,681 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:16:36,681 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:16:36,682 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:16:36,682 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:16:36,682 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:16:36,683 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:16:36,683 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:16:36,683 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:16:36,685 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:16:36,686 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:16:36,686 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:16:36,687 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:16:36,687 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:16:36,687 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:16:36,687 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:16:36,687 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:16:36,687 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:16:36,688 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:16:36,688 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:16:36,688 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:16:36,689 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:16:36,689 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:16:36,691 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:16:36,691 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:16:36,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:16:36,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:36,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:36,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:36,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:16:36,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:16:36,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:16:36,693 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:16:36,693 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:16:36,693 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:36,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:16:36,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:36,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:16:36,694 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:16:36,694 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:16:36,695 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:16:36,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:16:36,695 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:16:36,695 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:16:36,695 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:16:36,696 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:16:36,696 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:16:36,696 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:16:36,696 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:16:36,696 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:16:36,696 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:16:36,697 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:16:36,697 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:16:36,697 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:16:36,697 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:16:36,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:16:36,698 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:16:36,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:16:36,698 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:16:36,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:16:36,698 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:16:36,699 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:16:36,699 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:16:36,699 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:16:36,699 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:16:36,699 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:16:36,700 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:16:36,700 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:16:36,700 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:16:36,700 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:16:36,700 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:16:36,701 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:16:36,701 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:16:36,701 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:16:36,702 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:16:36,702 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:16:36,702 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:16:36,703 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:16:36,703 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:16:36,703 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:16:36,704 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:16:36,704 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:16:36,704 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:16:36,704 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:16:36,705 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:16:36,705 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:16:36,705 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:16:36,705 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:16:36,705 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:16:36,705 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:16:36,705 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:16:36,706 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:16:36,706 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:16:36,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:36,706 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:16:36,706 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-10-13 21:16:36,706 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:16:36,706 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:16:36,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:16:36,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:16:36,707 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:16:36,707 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:16:36,707 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:16:36,707 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:16:36,707 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:16:36,707 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:16:36,708 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:16:36,708 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:16:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:16:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:16:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:16:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:16:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:16:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:16:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:16:36,710 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:16:36,710 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:16:36,711 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:16:36,711 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:16:36,711 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:16:36,711 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:16:36,712 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:16:36,712 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:16:36,712 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:16:36,712 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:16:36,712 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:16:36,713 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:16:36,713 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:16:36,713 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:16:36,714 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:16:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:16:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:16:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:16:36,718 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:16:36,718 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:16:36,719 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:16:36,719 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:16:36,723 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:16:36,724 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:16:36,724 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:16:36,724 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:16:36,724 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:16:36,724 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:16:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:16:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:16:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:16:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:16:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:36,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:16:36,726 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:36,726 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:36,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:16:36,729 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:16:36,730 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:16:36,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:16:36,730 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:16:36,730 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:16:36,730 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:16:36,730 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:16:36,730 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:16:36,731 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:16:36,731 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:16:36,731 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:16:36,731 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:16:36,731 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:16:36,731 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:16:36,732 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:16:36,732 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:16:36,732 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:16:36,732 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:16:36,732 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:16:36,732 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:16:36,732 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:16:36,733 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:16:36,733 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:16:36,733 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:16:36,733 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:16:36,733 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:16:36,733 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:16:36,734 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:16:36,734 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:16:36,734 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:16:36,734 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:16:36,734 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:16:36,734 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:16:36,735 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:16:36,735 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:36,735 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:36,735 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:16:36,735 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:16:36,735 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:16:36,735 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:16:36,736 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:16:36,736 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:16:36,736 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:16:36,736 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:16:36,736 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:16:36,736 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:16:36,737 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:16:36,737 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:16:36,737 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:16:36,737 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:16:36,737 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:16:36,737 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:16:36,738 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:16:36,738 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:16:36,738 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:16:36,738 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:16:36,738 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:16:36,738 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:16:36,739 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:16:36,739 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:16:36,739 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:16:36,739 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:16:36,739 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:16:36,739 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:16:36,739 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:16:36,740 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:16:36,740 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:16:36,740 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:16:36,740 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:16:36,740 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:36,741 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:16:36,741 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:16:36,741 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:16:36,741 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:16:36,741 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:16:36,741 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:16:36,742 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:16:36,742 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-10-13 21:16:36,742 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:16:36,742 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:16:36,742 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:16:36,743 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:16:36,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:16:36,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:16:36,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:16:39,043 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:16:39,043 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:16:39,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:39 BoogieIcfgContainer [2019-10-13 21:16:39,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:16:39,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:16:39,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:16:39,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:16:39,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:16:35" (1/3) ... [2019-10-13 21:16:39,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1cf388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:39, skipping insertion in model container [2019-10-13 21:16:39,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:36" (2/3) ... [2019-10-13 21:16:39,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1cf388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:39, skipping insertion in model container [2019-10-13 21:16:39,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:39" (3/3) ... [2019-10-13 21:16:39,057 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product31.cil.c [2019-10-13 21:16:39,068 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:16:39,085 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:16:39,097 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:16:39,145 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:16:39,145 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:16:39,147 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:16:39,151 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:16:39,151 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:16:39,152 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:16:39,152 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:16:39,152 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:16:39,191 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states. [2019-10-13 21:16:39,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 21:16:39,221 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:39,223 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:39,225 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:39,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:39,231 INFO L82 PathProgramCache]: Analyzing trace with hash -908593919, now seen corresponding path program 1 times [2019-10-13 21:16:39,243 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:39,244 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428043292] [2019-10-13 21:16:39,244 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:39,244 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:39,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:40,006 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:40,007 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428043292] [2019-10-13 21:16:40,008 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:40,008 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:16:40,008 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305415079] [2019-10-13 21:16:40,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:16:40,015 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:40,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:16:40,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:40,033 INFO L87 Difference]: Start difference. First operand 558 states. Second operand 2 states. [2019-10-13 21:16:40,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:40,115 INFO L93 Difference]: Finished difference Result 858 states and 1126 transitions. [2019-10-13 21:16:40,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:16:40,121 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 164 [2019-10-13 21:16:40,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:40,166 INFO L225 Difference]: With dead ends: 858 [2019-10-13 21:16:40,167 INFO L226 Difference]: Without dead ends: 535 [2019-10-13 21:16:40,180 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:40,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2019-10-13 21:16:40,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2019-10-13 21:16:40,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2019-10-13 21:16:40,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 707 transitions. [2019-10-13 21:16:40,294 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 707 transitions. Word has length 164 [2019-10-13 21:16:40,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:40,297 INFO L462 AbstractCegarLoop]: Abstraction has 535 states and 707 transitions. [2019-10-13 21:16:40,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:16:40,297 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 707 transitions. [2019-10-13 21:16:40,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 21:16:40,304 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:40,305 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:40,305 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:40,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:40,305 INFO L82 PathProgramCache]: Analyzing trace with hash 644714031, now seen corresponding path program 1 times [2019-10-13 21:16:40,306 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:40,306 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494414617] [2019-10-13 21:16:40,306 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:40,306 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:40,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:40,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494414617] [2019-10-13 21:16:40,608 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:40,608 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:40,608 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017436700] [2019-10-13 21:16:40,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:40,617 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:40,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:40,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:40,618 INFO L87 Difference]: Start difference. First operand 535 states and 707 transitions. Second operand 3 states. [2019-10-13 21:16:40,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:40,709 INFO L93 Difference]: Finished difference Result 841 states and 1094 transitions. [2019-10-13 21:16:40,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:40,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-10-13 21:16:40,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:40,717 INFO L225 Difference]: With dead ends: 841 [2019-10-13 21:16:40,718 INFO L226 Difference]: Without dead ends: 538 [2019-10-13 21:16:40,720 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:40,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2019-10-13 21:16:40,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 537. [2019-10-13 21:16:40,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-10-13 21:16:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 709 transitions. [2019-10-13 21:16:40,809 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 709 transitions. Word has length 165 [2019-10-13 21:16:40,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:40,810 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 709 transitions. [2019-10-13 21:16:40,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:40,810 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 709 transitions. [2019-10-13 21:16:40,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 21:16:40,814 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:40,814 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:40,814 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:40,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:40,815 INFO L82 PathProgramCache]: Analyzing trace with hash -826054429, now seen corresponding path program 1 times [2019-10-13 21:16:40,815 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:40,815 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750669768] [2019-10-13 21:16:40,815 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:40,815 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:40,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:40,996 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750669768] [2019-10-13 21:16:40,996 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:40,996 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:40,996 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835050311] [2019-10-13 21:16:40,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:41,002 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:41,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:41,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:41,002 INFO L87 Difference]: Start difference. First operand 537 states and 709 transitions. Second operand 3 states. [2019-10-13 21:16:41,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:41,074 INFO L93 Difference]: Finished difference Result 1050 states and 1416 transitions. [2019-10-13 21:16:41,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:41,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-13 21:16:41,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:41,087 INFO L225 Difference]: With dead ends: 1050 [2019-10-13 21:16:41,087 INFO L226 Difference]: Without dead ends: 578 [2019-10-13 21:16:41,091 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:41,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2019-10-13 21:16:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 577. [2019-10-13 21:16:41,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2019-10-13 21:16:41,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 778 transitions. [2019-10-13 21:16:41,153 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 778 transitions. Word has length 171 [2019-10-13 21:16:41,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:41,155 INFO L462 AbstractCegarLoop]: Abstraction has 577 states and 778 transitions. [2019-10-13 21:16:41,155 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:41,155 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 778 transitions. [2019-10-13 21:16:41,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-13 21:16:41,167 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:41,169 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:41,170 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:41,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:41,170 INFO L82 PathProgramCache]: Analyzing trace with hash -290621353, now seen corresponding path program 1 times [2019-10-13 21:16:41,171 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:41,171 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560867074] [2019-10-13 21:16:41,171 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:41,172 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:41,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:41,502 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560867074] [2019-10-13 21:16:41,503 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:41,503 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:16:41,503 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118551162] [2019-10-13 21:16:41,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:41,504 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:41,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:41,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:16:41,505 INFO L87 Difference]: Start difference. First operand 577 states and 778 transitions. Second operand 7 states. [2019-10-13 21:16:44,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:44,716 INFO L93 Difference]: Finished difference Result 1175 states and 1544 transitions. [2019-10-13 21:16:44,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:16:44,716 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2019-10-13 21:16:44,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:44,722 INFO L225 Difference]: With dead ends: 1175 [2019-10-13 21:16:44,723 INFO L226 Difference]: Without dead ends: 883 [2019-10-13 21:16:44,724 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:44,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2019-10-13 21:16:44,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 874. [2019-10-13 21:16:44,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 874 states. [2019-10-13 21:16:44,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1159 transitions. [2019-10-13 21:16:44,768 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1159 transitions. Word has length 172 [2019-10-13 21:16:44,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:44,769 INFO L462 AbstractCegarLoop]: Abstraction has 874 states and 1159 transitions. [2019-10-13 21:16:44,769 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:44,770 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1159 transitions. [2019-10-13 21:16:44,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 21:16:44,773 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:44,773 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:44,774 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:44,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:44,774 INFO L82 PathProgramCache]: Analyzing trace with hash 598384953, now seen corresponding path program 1 times [2019-10-13 21:16:44,774 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:44,774 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699757792] [2019-10-13 21:16:44,775 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:44,775 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:44,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:45,108 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699757792] [2019-10-13 21:16:45,108 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:45,109 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-13 21:16:45,109 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355029519] [2019-10-13 21:16:45,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 21:16:45,110 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:45,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 21:16:45,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:16:45,111 INFO L87 Difference]: Start difference. First operand 874 states and 1159 transitions. Second operand 18 states. [2019-10-13 21:16:45,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:45,577 INFO L93 Difference]: Finished difference Result 1541 states and 2026 transitions. [2019-10-13 21:16:45,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 21:16:45,578 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 173 [2019-10-13 21:16:45,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:45,644 INFO L225 Difference]: With dead ends: 1541 [2019-10-13 21:16:45,644 INFO L226 Difference]: Without dead ends: 924 [2019-10-13 21:16:45,647 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:16:45,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2019-10-13 21:16:45,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 920. [2019-10-13 21:16:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 920 states. [2019-10-13 21:16:45,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1224 transitions. [2019-10-13 21:16:45,713 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1224 transitions. Word has length 173 [2019-10-13 21:16:45,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:45,715 INFO L462 AbstractCegarLoop]: Abstraction has 920 states and 1224 transitions. [2019-10-13 21:16:45,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 21:16:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1224 transitions. [2019-10-13 21:16:45,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-13 21:16:45,719 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:45,720 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:45,720 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:45,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:45,720 INFO L82 PathProgramCache]: Analyzing trace with hash 747428244, now seen corresponding path program 1 times [2019-10-13 21:16:45,721 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:45,721 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973525000] [2019-10-13 21:16:45,721 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:45,721 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:45,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:45,909 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:45,909 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973525000] [2019-10-13 21:16:45,909 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:45,909 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:16:45,910 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025368627] [2019-10-13 21:16:45,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:16:45,911 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:45,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:16:45,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:16:45,911 INFO L87 Difference]: Start difference. First operand 920 states and 1224 transitions. Second operand 8 states. [2019-10-13 21:16:47,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:47,179 INFO L93 Difference]: Finished difference Result 1747 states and 2309 transitions. [2019-10-13 21:16:47,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:47,180 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2019-10-13 21:16:47,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:47,193 INFO L225 Difference]: With dead ends: 1747 [2019-10-13 21:16:47,194 INFO L226 Difference]: Without dead ends: 1588 [2019-10-13 21:16:47,196 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:47,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2019-10-13 21:16:47,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1575. [2019-10-13 21:16:47,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2019-10-13 21:16:47,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2083 transitions. [2019-10-13 21:16:47,298 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2083 transitions. Word has length 182 [2019-10-13 21:16:47,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:47,299 INFO L462 AbstractCegarLoop]: Abstraction has 1575 states and 2083 transitions. [2019-10-13 21:16:47,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:16:47,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2083 transitions. [2019-10-13 21:16:47,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-13 21:16:47,304 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:47,304 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:47,304 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:47,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:47,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1282001460, now seen corresponding path program 1 times [2019-10-13 21:16:47,305 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:47,305 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863586005] [2019-10-13 21:16:47,306 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:47,306 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:47,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:47,735 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:47,736 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863586005] [2019-10-13 21:16:47,736 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:47,736 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-10-13 21:16:47,736 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677505855] [2019-10-13 21:16:47,737 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 21:16:47,737 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:47,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 21:16:47,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2019-10-13 21:16:47,738 INFO L87 Difference]: Start difference. First operand 1575 states and 2083 transitions. Second operand 17 states. [2019-10-13 21:16:48,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:48,602 INFO L93 Difference]: Finished difference Result 2182 states and 2860 transitions. [2019-10-13 21:16:48,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 21:16:48,603 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 183 [2019-10-13 21:16:48,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:48,617 INFO L225 Difference]: With dead ends: 2182 [2019-10-13 21:16:48,617 INFO L226 Difference]: Without dead ends: 1574 [2019-10-13 21:16:48,621 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:16:48,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2019-10-13 21:16:48,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1573. [2019-10-13 21:16:48,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2019-10-13 21:16:48,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2078 transitions. [2019-10-13 21:16:48,728 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2078 transitions. Word has length 183 [2019-10-13 21:16:48,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:48,729 INFO L462 AbstractCegarLoop]: Abstraction has 1573 states and 2078 transitions. [2019-10-13 21:16:48,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 21:16:48,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2078 transitions. [2019-10-13 21:16:48,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-13 21:16:48,736 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:48,736 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:48,737 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:48,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:48,737 INFO L82 PathProgramCache]: Analyzing trace with hash -287789140, now seen corresponding path program 2 times [2019-10-13 21:16:48,738 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:48,738 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944925012] [2019-10-13 21:16:48,738 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:48,738 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:48,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:48,962 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:48,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944925012] [2019-10-13 21:16:48,963 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290746675] [2019-10-13 21:16:48,963 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:49,549 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:49,549 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:49,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 2032 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 21:16:49,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:49,788 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:16:49,788 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:16:50,296 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:50,296 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-13 21:16:50,296 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913909276] [2019-10-13 21:16:50,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:50,298 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:50,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:50,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:16:50,299 INFO L87 Difference]: Start difference. First operand 1573 states and 2078 transitions. Second operand 14 states. [2019-10-13 21:16:53,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:53,100 INFO L93 Difference]: Finished difference Result 4671 states and 6209 transitions. [2019-10-13 21:16:53,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:53,101 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 183 [2019-10-13 21:16:53,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:53,129 INFO L225 Difference]: With dead ends: 4671 [2019-10-13 21:16:53,130 INFO L226 Difference]: Without dead ends: 4664 [2019-10-13 21:16:53,135 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 360 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:16:53,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4664 states. [2019-10-13 21:16:53,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4664 to 3351. [2019-10-13 21:16:53,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3351 states. [2019-10-13 21:16:53,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3351 states to 3351 states and 4504 transitions. [2019-10-13 21:16:53,462 INFO L78 Accepts]: Start accepts. Automaton has 3351 states and 4504 transitions. Word has length 183 [2019-10-13 21:16:53,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:53,463 INFO L462 AbstractCegarLoop]: Abstraction has 3351 states and 4504 transitions. [2019-10-13 21:16:53,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:16:53,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3351 states and 4504 transitions. [2019-10-13 21:16:53,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-13 21:16:53,476 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:53,476 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:53,684 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:53,684 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:53,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:53,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1144758085, now seen corresponding path program 1 times [2019-10-13 21:16:53,686 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:53,686 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696110359] [2019-10-13 21:16:53,686 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:53,687 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:53,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:53,853 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:53,854 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696110359] [2019-10-13 21:16:53,854 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764730875] [2019-10-13 21:16:53,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:54,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:54,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:54,498 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:54,812 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:54,877 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:54,930 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:54,930 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:54,931 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:16:54,931 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923285204] [2019-10-13 21:16:54,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:54,934 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:54,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:54,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:16:54,936 INFO L87 Difference]: Start difference. First operand 3351 states and 4504 transitions. Second operand 7 states. [2019-10-13 21:16:56,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:56,406 INFO L93 Difference]: Finished difference Result 6675 states and 8979 transitions. [2019-10-13 21:16:56,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:56,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2019-10-13 21:16:56,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:56,426 INFO L225 Difference]: With dead ends: 6675 [2019-10-13 21:16:56,426 INFO L226 Difference]: Without dead ends: 3363 [2019-10-13 21:16:56,438 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 361 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:16:56,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2019-10-13 21:16:56,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 3353. [2019-10-13 21:16:56,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3353 states. [2019-10-13 21:16:56,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 4507 transitions. [2019-10-13 21:16:56,633 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 4507 transitions. Word has length 186 [2019-10-13 21:16:56,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:56,634 INFO L462 AbstractCegarLoop]: Abstraction has 3353 states and 4507 transitions. [2019-10-13 21:16:56,634 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:56,635 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 4507 transitions. [2019-10-13 21:16:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-13 21:16:56,643 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:56,644 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:56,860 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:56,860 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:56,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:56,861 INFO L82 PathProgramCache]: Analyzing trace with hash -784397757, now seen corresponding path program 1 times [2019-10-13 21:16:56,861 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:56,862 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567012843] [2019-10-13 21:16:56,862 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:56,862 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:56,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:56,990 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:56,995 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567012843] [2019-10-13 21:16:56,995 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561625434] [2019-10-13 21:16:56,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:57,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:57,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:16:58,024 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:58,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:58,431 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:58,512 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:58,602 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:58,603 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:58,603 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-13 21:16:58,603 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137832556] [2019-10-13 21:16:58,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:16:58,604 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:58,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:16:58,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:16:58,605 INFO L87 Difference]: Start difference. First operand 3353 states and 4507 transitions. Second operand 9 states. [2019-10-13 21:17:00,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:00,154 INFO L93 Difference]: Finished difference Result 6682 states and 8989 transitions. [2019-10-13 21:17:00,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:17:00,155 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 187 [2019-10-13 21:17:00,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:00,174 INFO L225 Difference]: With dead ends: 6682 [2019-10-13 21:17:00,174 INFO L226 Difference]: Without dead ends: 3371 [2019-10-13 21:17:00,186 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 358 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:17:00,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2019-10-13 21:17:00,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 3369. [2019-10-13 21:17:00,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3369 states. [2019-10-13 21:17:00,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 4523 transitions. [2019-10-13 21:17:00,402 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 4523 transitions. Word has length 187 [2019-10-13 21:17:00,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:00,402 INFO L462 AbstractCegarLoop]: Abstraction has 3369 states and 4523 transitions. [2019-10-13 21:17:00,403 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:17:00,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 4523 transitions. [2019-10-13 21:17:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-13 21:17:00,475 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:00,476 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:00,676 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:17:00,677 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:00,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:00,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1354189646, now seen corresponding path program 1 times [2019-10-13 21:17:00,679 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:00,679 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603078564] [2019-10-13 21:17:00,679 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:00,679 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:00,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:17:00,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603078564] [2019-10-13 21:17:00,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906724979] [2019-10-13 21:17:00,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:17:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:01,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:17:01,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:17:01,735 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:17:01,735 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:17:02,069 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:17:02,145 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:17:02,210 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:17:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:17:02,326 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:17:02,326 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-13 21:17:02,327 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125712188] [2019-10-13 21:17:02,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:17:02,328 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:02,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:17:02,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:17:02,330 INFO L87 Difference]: Start difference. First operand 3369 states and 4523 transitions. Second operand 16 states. [2019-10-13 21:17:04,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:04,287 INFO L93 Difference]: Finished difference Result 6674 states and 8970 transitions. [2019-10-13 21:17:04,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:17:04,288 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 188 [2019-10-13 21:17:04,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:04,310 INFO L225 Difference]: With dead ends: 6674 [2019-10-13 21:17:04,311 INFO L226 Difference]: Without dead ends: 3393 [2019-10-13 21:17:04,323 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 360 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:17:04,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3393 states. [2019-10-13 21:17:04,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3393 to 3391. [2019-10-13 21:17:04,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3391 states. [2019-10-13 21:17:04,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3391 states to 3391 states and 4548 transitions. [2019-10-13 21:17:04,522 INFO L78 Accepts]: Start accepts. Automaton has 3391 states and 4548 transitions. Word has length 188 [2019-10-13 21:17:04,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:04,523 INFO L462 AbstractCegarLoop]: Abstraction has 3391 states and 4548 transitions. [2019-10-13 21:17:04,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:17:04,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3391 states and 4548 transitions. [2019-10-13 21:17:04,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-13 21:17:04,533 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:04,534 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:04,743 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:17:04,744 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:04,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:04,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1965861263, now seen corresponding path program 2 times [2019-10-13 21:17:04,744 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:04,744 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025041799] [2019-10-13 21:17:04,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:04,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:04,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:17:04,899 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025041799] [2019-10-13 21:17:04,900 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625496461] [2019-10-13 21:17:04,900 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 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