/usr/bin/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_spec1_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:47:50,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:47:50,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:47:50,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:47:50,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:47:50,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:47:50,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:47:50,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:47:50,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:47:50,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:47:50,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:47:50,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:47:50,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:47:50,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:47:50,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:47:50,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:47:50,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:47:50,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:47:50,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:47:50,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:47:50,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:47:50,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:47:50,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:47:50,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:47:50,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:47:50,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:47:50,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:47:50,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:47:50,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:47:50,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:47:50,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:47:50,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:47:50,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:47:50,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:47:50,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:47:50,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:47:50,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:47:50,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:47:50,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:47:50,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:47:50,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:47:50,887 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 [2019-11-07 00:47:50,925 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:47:50,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:47:50,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:47:50,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:47:50,930 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:47:50,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:47:50,931 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:47:50,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:47:50,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:47:50,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:47:50,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:47:50,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:47:50,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:47:50,933 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:47:50,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:47:50,934 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:47:50,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:47:50,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:47:50,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:47:50,934 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:47:50,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:47:50,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:47:50,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:47:50,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:47:50,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:47:50,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:47:50,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:47:50,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:47:50,936 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 [2019-11-07 00:47:51,249 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:47:51,273 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:47:51,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:47:51,279 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:47:51,280 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:47:51,280 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product16.cil.c [2019-11-07 00:47:51,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4588fd6a/f6ca23400b8e4263be7d72ed82b203ed/FLAG3660e9fe2 [2019-11-07 00:47:52,042 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:47:52,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product16.cil.c [2019-11-07 00:47:52,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4588fd6a/f6ca23400b8e4263be7d72ed82b203ed/FLAG3660e9fe2 [2019-11-07 00:47:52,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4588fd6a/f6ca23400b8e4263be7d72ed82b203ed [2019-11-07 00:47:52,270 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:47:52,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:47:52,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:47:52,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:47:52,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:47:52,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:47:52" (1/1) ... [2019-11-07 00:47:52,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3227a3e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:52, skipping insertion in model container [2019-11-07 00:47:52,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:47:52" (1/1) ... [2019-11-07 00:47:52,291 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:47:52,377 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:47:53,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:47:53,249 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:47:53,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:47:53,511 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:47:53,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53 WrapperNode [2019-11-07 00:47:53,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:47:53,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:47:53,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:47:53,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:47:53,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53" (1/1) ... [2019-11-07 00:47:53,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53" (1/1) ... [2019-11-07 00:47:53,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53" (1/1) ... [2019-11-07 00:47:53,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53" (1/1) ... [2019-11-07 00:47:53,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53" (1/1) ... [2019-11-07 00:47:53,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53" (1/1) ... [2019-11-07 00:47:53,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53" (1/1) ... [2019-11-07 00:47:53,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:47:53,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:47:53,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:47:53,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:47:53,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53" (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 [2019-11-07 00:47:53,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:47:53,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:47:53,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:47:53,786 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:47:53,786 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:47:53,787 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:47:53,787 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:47:53,788 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:47:53,788 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:47:53,789 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:47:53,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:47:53,789 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:47:53,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:47:53,790 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:47:53,791 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:47:53,791 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:47:53,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:47:53,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:47:53,794 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:47:53,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:47:53,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:47:53,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:47:53,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:47:53,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:47:53,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:47:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:47:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:47:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:47:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:47:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:47:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:47:53,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:47:53,798 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:47:53,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:47:53,798 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:47:53,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:47:53,799 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:47:53,799 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:47:53,799 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:47:53,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:47:53,800 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:47:53,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:47:53,800 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:47:53,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:47:53,801 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:47:53,801 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:47:53,801 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:47:53,801 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:47:53,801 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:47:53,802 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:47:53,802 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:47:53,802 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:47:53,802 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:47:53,802 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:47:53,802 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:47:53,803 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:47:53,803 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:47:53,803 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:47:53,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:47:53,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:47:53,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:47:53,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:47:53,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:47:53,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:47:53,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:47:53,805 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:47:53,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__AddressBookEncrypt_spec__1 [2019-11-07 00:47:53,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:47:53,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:47:53,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:47:53,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:47:53,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:47:53,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:47:53,807 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:47:53,807 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:47:53,808 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:47:53,808 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:47:53,808 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:47:53,808 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:47:53,809 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:47:53,809 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:47:53,809 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:47:53,809 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:47:53,810 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:47:53,810 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:47:53,811 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:47:53,811 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:47:53,812 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:47:53,812 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:47:53,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:47:53,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:47:53,812 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:47:53,812 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:47:53,813 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:47:53,813 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:47:53,813 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:47:53,813 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:47:53,813 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:47:53,813 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:47:53,814 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:47:53,814 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:47:53,814 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:47:53,814 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:47:53,814 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:47:53,814 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:47:53,815 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:47:53,815 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:47:53,815 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:47:53,815 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:47:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:47:53,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:47:53,816 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:47:53,816 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:47:53,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:47:53,816 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:47:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:47:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:47:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:47:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:47:53,818 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:47:53,818 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:47:53,818 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:47:53,819 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:47:53,819 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:47:53,820 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:47:53,820 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:47:53,820 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:47:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:47:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:47:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:47:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:47:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:47:53,822 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:47:53,822 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:47:53,822 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:47:53,822 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:47:53,823 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:47:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:47:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:47:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:47:53,827 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:47:53,827 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:47:53,827 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:47:53,828 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:47:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:47:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:47:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:47:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:47:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:47:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:47:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:47:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:47:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:47:53,837 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:47:53,837 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:47:53,837 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:47:53,837 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:47:53,837 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:47:53,837 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:47:53,837 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:47:53,838 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:47:53,838 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:47:53,838 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:47:53,838 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:47:53,838 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:47:53,838 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:47:53,838 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:47:53,838 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:47:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:47:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:47:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:47:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:47:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:47:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:47:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:47:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:47:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:47:53,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:47:53,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:47:53,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:47:53,840 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:47:53,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:47:53,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:47:53,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:47:53,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:47:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:47:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:47:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:47:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:47:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:47:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:47:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:47:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:47:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:47:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:47:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:47:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__AddressBookEncrypt_spec__1 [2019-11-07 00:47:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:47:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:47:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:47:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:47:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:47:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:47:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:47:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:47:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:47:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:47:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:47:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:47:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:47:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:47:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:47:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:47:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:47:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:47:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:47:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:47:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:47:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:47:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:47:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:47:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:47:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:47:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:47:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:47:53,846 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:47:53,846 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:47:53,846 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:47:53,846 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:47:53,846 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:47:53,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:47:53,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:47:53,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:47:56,001 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:47:56,002 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:47:56,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:47:56 BoogieIcfgContainer [2019-11-07 00:47:56,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:47:56,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:47:56,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:47:56,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:47:56,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:47:52" (1/3) ... [2019-11-07 00:47:56,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cbc1a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:47:56, skipping insertion in model container [2019-11-07 00:47:56,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:53" (2/3) ... [2019-11-07 00:47:56,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cbc1a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:47:56, skipping insertion in model container [2019-11-07 00:47:56,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:47:56" (3/3) ... [2019-11-07 00:47:56,012 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec1_product16.cil.c [2019-11-07 00:47:56,022 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:47:56,032 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:47:56,045 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:47:56,084 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:47:56,084 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:47:56,084 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:47:56,084 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:47:56,084 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:47:56,084 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:47:56,085 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:47:56,085 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:47:56,125 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states. [2019-11-07 00:47:56,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-07 00:47:56,165 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:56,167 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:56,171 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:56,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:56,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1028752379, now seen corresponding path program 1 times [2019-11-07 00:47:56,201 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:56,202 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046336632] [2019-11-07 00:47:56,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:47:56,875 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046336632] [2019-11-07 00:47:56,875 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:56,876 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:47:56,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104286567] [2019-11-07 00:47:56,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:47:56,889 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:56,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:47:56,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:47:56,907 INFO L87 Difference]: Start difference. First operand 476 states. Second operand 2 states. [2019-11-07 00:47:57,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:57,024 INFO L93 Difference]: Finished difference Result 694 states and 913 transitions. [2019-11-07 00:47:57,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:47:57,026 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 145 [2019-11-07 00:47:57,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:57,050 INFO L225 Difference]: With dead ends: 694 [2019-11-07 00:47:57,051 INFO L226 Difference]: Without dead ends: 453 [2019-11-07 00:47:57,063 INFO L630 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 [2019-11-07 00:47:57,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2019-11-07 00:47:57,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2019-11-07 00:47:57,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2019-11-07 00:47:57,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 601 transitions. [2019-11-07 00:47:57,161 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 601 transitions. Word has length 145 [2019-11-07 00:47:57,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:57,163 INFO L462 AbstractCegarLoop]: Abstraction has 453 states and 601 transitions. [2019-11-07 00:47:57,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:47:57,164 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 601 transitions. [2019-11-07 00:47:57,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-07 00:47:57,169 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:57,169 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:57,169 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:57,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:57,170 INFO L82 PathProgramCache]: Analyzing trace with hash -711556920, now seen corresponding path program 1 times [2019-11-07 00:47:57,170 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:57,170 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80503338] [2019-11-07 00:47:57,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:47:57,421 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80503338] [2019-11-07 00:47:57,422 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:57,422 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:57,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653573274] [2019-11-07 00:47:57,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:57,424 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:57,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:57,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:57,425 INFO L87 Difference]: Start difference. First operand 453 states and 601 transitions. Second operand 3 states. [2019-11-07 00:47:57,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:57,474 INFO L93 Difference]: Finished difference Result 677 states and 882 transitions. [2019-11-07 00:47:57,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:57,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2019-11-07 00:47:57,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:57,480 INFO L225 Difference]: With dead ends: 677 [2019-11-07 00:47:57,481 INFO L226 Difference]: Without dead ends: 456 [2019-11-07 00:47:57,483 INFO L630 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 [2019-11-07 00:47:57,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2019-11-07 00:47:57,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 455. [2019-11-07 00:47:57,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2019-11-07 00:47:57,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 603 transitions. [2019-11-07 00:47:57,532 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 603 transitions. Word has length 146 [2019-11-07 00:47:57,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:57,534 INFO L462 AbstractCegarLoop]: Abstraction has 455 states and 603 transitions. [2019-11-07 00:47:57,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:57,534 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 603 transitions. [2019-11-07 00:47:57,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-11-07 00:47:57,540 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:57,540 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:57,541 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:57,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:57,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1834454924, now seen corresponding path program 1 times [2019-11-07 00:47:57,542 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:57,542 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430287376] [2019-11-07 00:47:57,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:57,812 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:47:57,812 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430287376] [2019-11-07 00:47:57,812 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:57,813 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:57,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345810201] [2019-11-07 00:47:57,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:57,814 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:57,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:57,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:57,815 INFO L87 Difference]: Start difference. First operand 455 states and 603 transitions. Second operand 3 states. [2019-11-07 00:47:57,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:57,852 INFO L93 Difference]: Finished difference Result 886 states and 1204 transitions. [2019-11-07 00:47:57,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:57,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 152 [2019-11-07 00:47:57,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:57,857 INFO L225 Difference]: With dead ends: 886 [2019-11-07 00:47:57,857 INFO L226 Difference]: Without dead ends: 496 [2019-11-07 00:47:57,859 INFO L630 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 [2019-11-07 00:47:57,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2019-11-07 00:47:57,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 495. [2019-11-07 00:47:57,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2019-11-07 00:47:57,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 672 transitions. [2019-11-07 00:47:57,888 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 672 transitions. Word has length 152 [2019-11-07 00:47:57,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:57,889 INFO L462 AbstractCegarLoop]: Abstraction has 495 states and 672 transitions. [2019-11-07 00:47:57,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 672 transitions. [2019-11-07 00:47:57,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-11-07 00:47:57,893 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:57,893 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:57,893 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:57,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:57,894 INFO L82 PathProgramCache]: Analyzing trace with hash 316559845, now seen corresponding path program 1 times [2019-11-07 00:47:57,894 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:57,894 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817226485] [2019-11-07 00:47:57,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:47:58,830 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817226485] [2019-11-07 00:47:58,830 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:58,830 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2019-11-07 00:47:58,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017862872] [2019-11-07 00:47:58,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-11-07 00:47:58,833 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:58,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-11-07 00:47:58,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=858, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:47:58,835 INFO L87 Difference]: Start difference. First operand 495 states and 672 transitions. Second operand 31 states. [2019-11-07 00:48:03,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:03,377 INFO L93 Difference]: Finished difference Result 1423 states and 1968 transitions. [2019-11-07 00:48:03,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-11-07 00:48:03,378 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 153 [2019-11-07 00:48:03,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:03,387 INFO L225 Difference]: With dead ends: 1423 [2019-11-07 00:48:03,388 INFO L226 Difference]: Without dead ends: 964 [2019-11-07 00:48:03,391 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=252, Invalid=3054, Unknown=0, NotChecked=0, Total=3306 [2019-11-07 00:48:03,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2019-11-07 00:48:03,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 718. [2019-11-07 00:48:03,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2019-11-07 00:48:03,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1025 transitions. [2019-11-07 00:48:03,439 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1025 transitions. Word has length 153 [2019-11-07 00:48:03,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:03,440 INFO L462 AbstractCegarLoop]: Abstraction has 718 states and 1025 transitions. [2019-11-07 00:48:03,440 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-11-07 00:48:03,440 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1025 transitions. [2019-11-07 00:48:03,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-11-07 00:48:03,445 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:03,445 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:48:03,445 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:03,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:03,446 INFO L82 PathProgramCache]: Analyzing trace with hash 410280145, now seen corresponding path program 1 times [2019-11-07 00:48:03,446 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:03,446 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502776496] [2019-11-07 00:48:03,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 00:48:04,279 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502776496] [2019-11-07 00:48:04,280 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089356922] [2019-11-07 00:48:04,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:48:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:04,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 2366 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:48:04,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:48:05,108 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:48:05,109 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:48:05,500 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:48:05,592 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:48:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:48:05,652 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:48:05,652 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [31, 7] total 39 [2019-11-07 00:48:05,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508170550] [2019-11-07 00:48:05,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:48:05,654 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:05,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:48:05,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1372, Unknown=0, NotChecked=0, Total=1482 [2019-11-07 00:48:05,655 INFO L87 Difference]: Start difference. First operand 718 states and 1025 transitions. Second operand 7 states. [2019-11-07 00:48:06,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:06,792 INFO L93 Difference]: Finished difference Result 1389 states and 2003 transitions. [2019-11-07 00:48:06,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:48:06,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2019-11-07 00:48:06,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:06,797 INFO L225 Difference]: With dead ends: 1389 [2019-11-07 00:48:06,798 INFO L226 Difference]: Without dead ends: 722 [2019-11-07 00:48:06,801 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 300 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=128, Invalid=1512, Unknown=0, NotChecked=0, Total=1640 [2019-11-07 00:48:06,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2019-11-07 00:48:06,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2019-11-07 00:48:06,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2019-11-07 00:48:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1030 transitions. [2019-11-07 00:48:06,839 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1030 transitions. Word has length 154 [2019-11-07 00:48:06,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:06,840 INFO L462 AbstractCegarLoop]: Abstraction has 722 states and 1030 transitions. [2019-11-07 00:48:06,840 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:48:06,840 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1030 transitions. [2019-11-07 00:48:06,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-07 00:48:06,843 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:06,844 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:48:07,050 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:48:07,051 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:07,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:07,052 INFO L82 PathProgramCache]: Analyzing trace with hash 2095426242, now seen corresponding path program 1 times [2019-11-07 00:48:07,052 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:07,053 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280350674] [2019-11-07 00:48:07,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:48:07,879 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280350674] [2019-11-07 00:48:07,879 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:07,880 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-11-07 00:48:07,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390370987] [2019-11-07 00:48:07,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-07 00:48:07,881 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:07,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-07 00:48:07,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2019-11-07 00:48:07,881 INFO L87 Difference]: Start difference. First operand 722 states and 1030 transitions. Second operand 26 states. [2019-11-07 00:48:14,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:14,800 INFO L93 Difference]: Finished difference Result 2306 states and 3160 transitions. [2019-11-07 00:48:14,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-11-07 00:48:14,801 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 155 [2019-11-07 00:48:14,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:14,813 INFO L225 Difference]: With dead ends: 2306 [2019-11-07 00:48:14,813 INFO L226 Difference]: Without dead ends: 2094 [2019-11-07 00:48:14,816 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1520 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=724, Invalid=5596, Unknown=0, NotChecked=0, Total=6320 [2019-11-07 00:48:14,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2019-11-07 00:48:14,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 1611. [2019-11-07 00:48:14,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1611 states. [2019-11-07 00:48:14,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 2289 transitions. [2019-11-07 00:48:14,905 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 2289 transitions. Word has length 155 [2019-11-07 00:48:14,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:14,905 INFO L462 AbstractCegarLoop]: Abstraction has 1611 states and 2289 transitions. [2019-11-07 00:48:14,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-07 00:48:14,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 2289 transitions. [2019-11-07 00:48:14,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-11-07 00:48:14,911 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:14,912 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:48:14,912 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:14,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:14,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1906791, now seen corresponding path program 1 times [2019-11-07 00:48:14,913 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:14,913 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053137389] [2019-11-07 00:48:14,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:48:15,096 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053137389] [2019-11-07 00:48:15,096 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:15,097 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:48:15,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431701571] [2019-11-07 00:48:15,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:48:15,099 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:15,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:48:15,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:48:15,104 INFO L87 Difference]: Start difference. First operand 1611 states and 2289 transitions. Second operand 5 states. [2019-11-07 00:48:16,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:16,048 INFO L93 Difference]: Finished difference Result 3981 states and 5487 transitions. [2019-11-07 00:48:16,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:48:16,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2019-11-07 00:48:16,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:16,068 INFO L225 Difference]: With dead ends: 3981 [2019-11-07 00:48:16,068 INFO L226 Difference]: Without dead ends: 3348 [2019-11-07 00:48:16,073 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:48:16,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3348 states. [2019-11-07 00:48:16,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3348 to 3119. [2019-11-07 00:48:16,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3119 states. [2019-11-07 00:48:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 4301 transitions. [2019-11-07 00:48:16,262 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 4301 transitions. Word has length 156 [2019-11-07 00:48:16,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:16,263 INFO L462 AbstractCegarLoop]: Abstraction has 3119 states and 4301 transitions. [2019-11-07 00:48:16,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:48:16,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 4301 transitions. [2019-11-07 00:48:16,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-11-07 00:48:16,276 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:16,276 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:48:16,277 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:16,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:16,277 INFO L82 PathProgramCache]: Analyzing trace with hash -2012010632, now seen corresponding path program 1 times [2019-11-07 00:48:16,278 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:16,278 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458711765] [2019-11-07 00:48:16,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:16,565 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:48:16,565 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458711765] [2019-11-07 00:48:16,565 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:16,566 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:48:16,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621271449] [2019-11-07 00:48:16,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:48:16,568 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:16,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:48:16,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:48:16,569 INFO L87 Difference]: Start difference. First operand 3119 states and 4301 transitions. Second operand 9 states. [2019-11-07 00:48:16,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:16,902 INFO L93 Difference]: Finished difference Result 3549 states and 4843 transitions. [2019-11-07 00:48:16,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 00:48:16,902 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 156 [2019-11-07 00:48:16,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:16,909 INFO L225 Difference]: With dead ends: 3549 [2019-11-07 00:48:16,909 INFO L226 Difference]: Without dead ends: 1159 [2019-11-07 00:48:16,917 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:48:16,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2019-11-07 00:48:16,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1157. [2019-11-07 00:48:16,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2019-11-07 00:48:16,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1578 transitions. [2019-11-07 00:48:16,996 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1578 transitions. Word has length 156 [2019-11-07 00:48:16,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:16,996 INFO L462 AbstractCegarLoop]: Abstraction has 1157 states and 1578 transitions. [2019-11-07 00:48:16,996 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:48:16,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1578 transitions. [2019-11-07 00:48:17,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-11-07 00:48:17,002 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:17,002 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:48:17,003 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:17,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:17,003 INFO L82 PathProgramCache]: Analyzing trace with hash 938095298, now seen corresponding path program 2 times [2019-11-07 00:48:17,005 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:17,005 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182071476] [2019-11-07 00:48:17,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:17,471 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-07 00:48:17,471 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182071476] [2019-11-07 00:48:17,471 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:17,471 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2019-11-07 00:48:17,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464308239] [2019-11-07 00:48:17,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-07 00:48:17,472 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:17,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-07 00:48:17,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2019-11-07 00:48:17,473 INFO L87 Difference]: Start difference. First operand 1157 states and 1578 transitions. Second operand 24 states.