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_product13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:15:03,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:15:03,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:15:03,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:15:03,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:15:03,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:15:03,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:15:03,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:15:03,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:15:03,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:15:03,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:15:03,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:15:03,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:15:03,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:15:03,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:15:03,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:15:03,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:15:03,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:15:03,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:15:03,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:15:03,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:15:03,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:15:03,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:15:03,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:15:03,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:15:03,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:15:03,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:15:03,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:15:03,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:15:03,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:15:03,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:15:03,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:15:03,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:15:03,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:15:03,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:15:03,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:15:03,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:15:03,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:15:03,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:15:03,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:15:03,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:15:03,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:15:03,978 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:15:03,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:15:03,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:15:03,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:15:03,983 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:15:03,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:15:03,984 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:15:03,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:15:03,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:15:03,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:15:03,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:15:03,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:15:03,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:15:03,988 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:15:03,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:15:03,988 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:15:03,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:15:03,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:15:03,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:15:03,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:15:03,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:15:03,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:03,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:15:03,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:15:03,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:15:03,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:15:03,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:15:03,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:15:03,992 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:15:04,320 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:15:04,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:15:04,353 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:15:04,355 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:15:04,355 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:15:04,356 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product13.cil.c [2019-10-15 01:15:04,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6850cdfe2/115482299b364352a15d3843940708e2/FLAG1efe1f30e [2019-10-15 01:15:05,188 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:15:05,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product13.cil.c [2019-10-15 01:15:05,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6850cdfe2/115482299b364352a15d3843940708e2/FLAG1efe1f30e [2019-10-15 01:15:05,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6850cdfe2/115482299b364352a15d3843940708e2 [2019-10-15 01:15:05,389 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:15:05,390 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:15:05,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:05,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:15:05,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:15:05,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:05" (1/1) ... [2019-10-15 01:15:05,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10977f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:05, skipping insertion in model container [2019-10-15 01:15:05,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:05" (1/1) ... [2019-10-15 01:15:05,410 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:15:05,499 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:15:06,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:06,282 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:15:06,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:06,534 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:15:06,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:06 WrapperNode [2019-10-15 01:15:06,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:06,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:15:06,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:15:06,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:15:06,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:06" (1/1) ... [2019-10-15 01:15:06,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:06" (1/1) ... [2019-10-15 01:15:06,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:06" (1/1) ... [2019-10-15 01:15:06,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:06" (1/1) ... [2019-10-15 01:15:06,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:06" (1/1) ... [2019-10-15 01:15:06,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:06" (1/1) ... [2019-10-15 01:15:06,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:06" (1/1) ... [2019-10-15 01:15:06,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:15:06,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:15:06,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:15:06,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:15:06,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:06,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:15:06,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:15:06,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:15:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:15:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:15:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:15:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:15:06,828 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:15:06,828 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:15:06,828 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:15:06,828 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:15:06,829 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:15:06,829 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:15:06,829 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:15:06,830 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:15:06,830 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:15:06,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:15:06,831 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:15:06,831 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:15:06,831 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:15:06,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:15:06,832 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:15:06,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:15:06,832 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:15:06,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:15:06,832 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:15:06,833 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:15:06,833 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:15:06,833 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:15:06,833 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:15:06,833 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:15:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:15:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:15:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:15:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:15:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:15:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:15:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:15:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:15:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:15:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:15:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:06,836 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:15:06,836 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:06,836 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:15:06,836 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:15:06,836 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:15:06,836 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:15:06,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:15:06,837 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:15:06,837 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:15:06,837 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:15:06,837 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:15:06,837 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:15:06,838 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:15:06,838 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:15:06,838 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:15:06,838 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:15:06,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:15:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:15:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:15:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:15:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:15:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:15:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:15:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:15:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:15:06,840 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:15:06,840 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:15:06,840 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:15:06,840 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:15:06,840 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:15:06,840 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:15:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:15:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:15:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:15:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:15:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:15:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:15:06,842 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:15:06,842 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:15:06,842 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:15:06,842 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:15:06,842 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:15:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:15:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:15:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:15:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:15:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:15:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:15:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:15:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:15:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:15:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:15:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:15:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:15:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:15:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:15:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:15:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:15:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:15:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:15:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:15:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:15:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:15:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:15:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:15:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:15:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:15:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:15:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:15:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:15:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:15:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:15:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:15:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:15:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:15:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:15:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:15:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:15:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:15:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:15:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:15:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:15:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:15:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:15:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:15:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:15:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:15:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:15:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:15:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:15:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:15:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:15:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:15:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:15:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:15:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:15:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:15:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:15:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:15:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:15:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:15:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:15:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:15:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:15:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:15:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:15:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:15:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:15:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:15:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:15:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:15:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:15:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:15:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:15:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:15:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:15:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:15:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:15:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:15:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:15:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:15:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:15:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:15:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:15:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:15:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:15:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:15:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:15:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:15:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:15:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:15:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:15:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:15:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:15:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:15:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:15:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:15:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:15:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:15:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:15:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:15:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:15:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:15:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:15:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:15:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:15:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:15:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:15:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:15:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:15:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:15:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:15:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:15:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:15:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:15:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:15:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:15:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:15:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:15:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:15:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:15:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:15:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:15:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:15:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:15:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:15:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:15:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:15:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:15:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:15:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:15:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:15:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:15:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:15:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:15:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:15:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:15:09,023 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:15:09,023 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:15:09,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:09 BoogieIcfgContainer [2019-10-15 01:15:09,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:15:09,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:15:09,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:15:09,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:15:09,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:15:05" (1/3) ... [2019-10-15 01:15:09,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af0b6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:09, skipping insertion in model container [2019-10-15 01:15:09,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:06" (2/3) ... [2019-10-15 01:15:09,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af0b6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:09, skipping insertion in model container [2019-10-15 01:15:09,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:09" (3/3) ... [2019-10-15 01:15:09,035 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product13.cil.c [2019-10-15 01:15:09,047 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:15:09,059 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:15:09,071 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:15:09,112 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:15:09,112 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:15:09,112 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:15:09,112 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:15:09,112 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:15:09,113 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:15:09,114 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:15:09,114 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:15:09,151 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states. [2019-10-15 01:15:09,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-15 01:15:09,191 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:09,193 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] [2019-10-15 01:15:09,198 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:09,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:09,205 INFO L82 PathProgramCache]: Analyzing trace with hash -319338325, now seen corresponding path program 1 times [2019-10-15 01:15:09,215 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:09,215 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198422993] [2019-10-15 01:15:09,216 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:09,220 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:09,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:09,799 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198422993] [2019-10-15 01:15:09,800 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:09,800 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:15:09,801 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146614931] [2019-10-15 01:15:09,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:15:09,812 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:09,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:15:09,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:09,831 INFO L87 Difference]: Start difference. First operand 447 states. Second operand 2 states. [2019-10-15 01:15:09,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:09,981 INFO L93 Difference]: Finished difference Result 603 states and 795 transitions. [2019-10-15 01:15:09,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:15:09,983 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 148 [2019-10-15 01:15:09,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:10,024 INFO L225 Difference]: With dead ends: 603 [2019-10-15 01:15:10,024 INFO L226 Difference]: Without dead ends: 402 [2019-10-15 01:15:10,031 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:10,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2019-10-15 01:15:10,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2019-10-15 01:15:10,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2019-10-15 01:15:10,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 535 transitions. [2019-10-15 01:15:10,153 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 535 transitions. Word has length 148 [2019-10-15 01:15:10,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:10,159 INFO L462 AbstractCegarLoop]: Abstraction has 402 states and 535 transitions. [2019-10-15 01:15:10,159 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:15:10,159 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 535 transitions. [2019-10-15 01:15:10,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:15:10,167 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:10,168 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] [2019-10-15 01:15:10,168 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:10,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:10,169 INFO L82 PathProgramCache]: Analyzing trace with hash 2037182428, now seen corresponding path program 1 times [2019-10-15 01:15:10,169 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:10,169 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765284510] [2019-10-15 01:15:10,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:10,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:10,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:10,405 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765284510] [2019-10-15 01:15:10,406 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:10,406 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:10,406 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410900862] [2019-10-15 01:15:10,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:10,409 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:10,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:10,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:10,409 INFO L87 Difference]: Start difference. First operand 402 states and 535 transitions. Second operand 3 states. [2019-10-15 01:15:10,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:10,451 INFO L93 Difference]: Finished difference Result 586 states and 764 transitions. [2019-10-15 01:15:10,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:10,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-15 01:15:10,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:10,458 INFO L225 Difference]: With dead ends: 586 [2019-10-15 01:15:10,458 INFO L226 Difference]: Without dead ends: 405 [2019-10-15 01:15:10,462 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:10,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2019-10-15 01:15:10,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 404. [2019-10-15 01:15:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2019-10-15 01:15:10,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 537 transitions. [2019-10-15 01:15:10,488 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 537 transitions. Word has length 149 [2019-10-15 01:15:10,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:10,489 INFO L462 AbstractCegarLoop]: Abstraction has 404 states and 537 transitions. [2019-10-15 01:15:10,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:10,490 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 537 transitions. [2019-10-15 01:15:10,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-15 01:15:10,493 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:10,493 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] [2019-10-15 01:15:10,493 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:10,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:10,494 INFO L82 PathProgramCache]: Analyzing trace with hash 33956208, now seen corresponding path program 1 times [2019-10-15 01:15:10,494 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:10,494 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946131335] [2019-10-15 01:15:10,495 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:10,495 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:10,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:10,617 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946131335] [2019-10-15 01:15:10,617 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:10,618 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:10,618 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531073591] [2019-10-15 01:15:10,619 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:10,619 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:10,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:10,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:10,620 INFO L87 Difference]: Start difference. First operand 404 states and 537 transitions. Second operand 3 states. [2019-10-15 01:15:10,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:10,701 INFO L93 Difference]: Finished difference Result 782 states and 1069 transitions. [2019-10-15 01:15:10,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:10,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-10-15 01:15:10,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:10,711 INFO L225 Difference]: With dead ends: 782 [2019-10-15 01:15:10,711 INFO L226 Difference]: Without dead ends: 443 [2019-10-15 01:15:10,713 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:10,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2019-10-15 01:15:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 442. [2019-10-15 01:15:10,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2019-10-15 01:15:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 603 transitions. [2019-10-15 01:15:10,745 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 603 transitions. Word has length 155 [2019-10-15 01:15:10,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:10,745 INFO L462 AbstractCegarLoop]: Abstraction has 442 states and 603 transitions. [2019-10-15 01:15:10,746 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:10,746 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 603 transitions. [2019-10-15 01:15:10,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-15 01:15:10,749 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:10,750 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] [2019-10-15 01:15:10,750 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:10,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:10,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1421123809, now seen corresponding path program 1 times [2019-10-15 01:15:10,751 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:10,751 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420098715] [2019-10-15 01:15:10,751 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:10,751 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:10,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:10,942 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420098715] [2019-10-15 01:15:10,942 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:10,942 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:15:10,942 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136191844] [2019-10-15 01:15:10,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:10,943 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:10,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:10,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:15:10,944 INFO L87 Difference]: Start difference. First operand 442 states and 603 transitions. Second operand 7 states. [2019-10-15 01:15:13,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:13,292 INFO L93 Difference]: Finished difference Result 786 states and 1038 transitions. [2019-10-15 01:15:13,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:15:13,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2019-10-15 01:15:13,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:13,301 INFO L225 Difference]: With dead ends: 786 [2019-10-15 01:15:13,306 INFO L226 Difference]: Without dead ends: 621 [2019-10-15 01:15:13,307 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 [2019-10-15 01:15:13,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-15 01:15:13,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 612. [2019-10-15 01:15:13,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-15 01:15:13,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 819 transitions. [2019-10-15 01:15:13,382 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 819 transitions. Word has length 156 [2019-10-15 01:15:13,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:13,382 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 819 transitions. [2019-10-15 01:15:13,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:13,383 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 819 transitions. [2019-10-15 01:15:13,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-15 01:15:13,393 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:13,393 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] [2019-10-15 01:15:13,394 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:13,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:13,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1352001188, now seen corresponding path program 1 times [2019-10-15 01:15:13,394 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:13,395 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895542292] [2019-10-15 01:15:13,395 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:13,395 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:13,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:13,840 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:13,840 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895542292] [2019-10-15 01:15:13,841 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:13,841 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-15 01:15:13,841 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782971139] [2019-10-15 01:15:13,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:15:13,842 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:13,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:15:13,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:15:13,843 INFO L87 Difference]: Start difference. First operand 612 states and 819 transitions. Second operand 16 states. [2019-10-15 01:15:14,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:14,204 INFO L93 Difference]: Finished difference Result 1003 states and 1321 transitions. [2019-10-15 01:15:14,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 01:15:14,205 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2019-10-15 01:15:14,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:14,210 INFO L225 Difference]: With dead ends: 1003 [2019-10-15 01:15:14,211 INFO L226 Difference]: Without dead ends: 644 [2019-10-15 01:15:14,213 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-15 01:15:14,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-10-15 01:15:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 640. [2019-10-15 01:15:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2019-10-15 01:15:14,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 854 transitions. [2019-10-15 01:15:14,249 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 854 transitions. Word has length 157 [2019-10-15 01:15:14,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:14,250 INFO L462 AbstractCegarLoop]: Abstraction has 640 states and 854 transitions. [2019-10-15 01:15:14,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:15:14,250 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 854 transitions. [2019-10-15 01:15:14,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-15 01:15:14,253 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:14,254 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] [2019-10-15 01:15:14,254 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:14,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:14,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1213322281, now seen corresponding path program 1 times [2019-10-15 01:15:14,255 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:14,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510178592] [2019-10-15 01:15:14,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:14,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:14,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:14,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510178592] [2019-10-15 01:15:14,475 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:14,475 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:15:14,475 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360393432] [2019-10-15 01:15:14,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:15:14,476 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:14,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:15:14,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:15:14,477 INFO L87 Difference]: Start difference. First operand 640 states and 854 transitions. Second operand 8 states. [2019-10-15 01:15:15,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:15,303 INFO L93 Difference]: Finished difference Result 1123 states and 1472 transitions. [2019-10-15 01:15:15,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:15,304 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2019-10-15 01:15:15,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:15,311 INFO L225 Difference]: With dead ends: 1123 [2019-10-15 01:15:15,312 INFO L226 Difference]: Without dead ends: 1036 [2019-10-15 01:15:15,313 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 [2019-10-15 01:15:15,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2019-10-15 01:15:15,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1023. [2019-10-15 01:15:15,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2019-10-15 01:15:15,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1350 transitions. [2019-10-15 01:15:15,373 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1350 transitions. Word has length 166 [2019-10-15 01:15:15,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:15,374 INFO L462 AbstractCegarLoop]: Abstraction has 1023 states and 1350 transitions. [2019-10-15 01:15:15,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:15:15,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1350 transitions. [2019-10-15 01:15:15,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-15 01:15:15,380 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:15,380 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] [2019-10-15 01:15:15,380 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:15,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:15,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1191367596, now seen corresponding path program 1 times [2019-10-15 01:15:15,381 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:15,381 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675100455] [2019-10-15 01:15:15,382 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:15,382 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:15,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:15,642 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675100455] [2019-10-15 01:15:15,642 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:15,642 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-15 01:15:15,642 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113823101] [2019-10-15 01:15:15,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:15:15,643 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:15,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:15:15,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:15:15,644 INFO L87 Difference]: Start difference. First operand 1023 states and 1350 transitions. Second operand 15 states. [2019-10-15 01:15:16,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:16,267 INFO L93 Difference]: Finished difference Result 1376 states and 1795 transitions. [2019-10-15 01:15:16,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 01:15:16,268 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 167 [2019-10-15 01:15:16,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:16,275 INFO L225 Difference]: With dead ends: 1376 [2019-10-15 01:15:16,275 INFO L226 Difference]: Without dead ends: 1022 [2019-10-15 01:15:16,277 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2019-10-15 01:15:16,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2019-10-15 01:15:16,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1021. [2019-10-15 01:15:16,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2019-10-15 01:15:16,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1345 transitions. [2019-10-15 01:15:16,329 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1345 transitions. Word has length 167 [2019-10-15 01:15:16,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:16,330 INFO L462 AbstractCegarLoop]: Abstraction has 1021 states and 1345 transitions. [2019-10-15 01:15:16,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:15:16,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1345 transitions. [2019-10-15 01:15:16,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-15 01:15:16,334 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:16,335 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] [2019-10-15 01:15:16,335 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:16,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:16,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1987588104, now seen corresponding path program 2 times [2019-10-15 01:15:16,336 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:16,337 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105483763] [2019-10-15 01:15:16,337 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:16,337 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:16,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:16,533 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105483763] [2019-10-15 01:15:16,533 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060984313] [2019-10-15 01:15:16,533 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 [2019-10-15 01:15:16,958 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:15:16,958 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:16,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 1821 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 01:15:16,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:17,205 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:17,205 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:17,825 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:17,826 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-15 01:15:17,826 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704047027] [2019-10-15 01:15:17,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:15:17,827 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:17,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:15:17,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:15:17,828 INFO L87 Difference]: Start difference. First operand 1021 states and 1345 transitions. Second operand 14 states. [2019-10-15 01:15:19,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:19,918 INFO L93 Difference]: Finished difference Result 3015 states and 4010 transitions. [2019-10-15 01:15:19,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:15:19,919 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 167 [2019-10-15 01:15:19,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:19,953 INFO L225 Difference]: With dead ends: 3015 [2019-10-15 01:15:19,953 INFO L226 Difference]: Without dead ends: 3008 [2019-10-15 01:15:19,961 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 328 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:15:19,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2019-10-15 01:15:20,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2234. [2019-10-15 01:15:20,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2234 states. [2019-10-15 01:15:20,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 3021 transitions. [2019-10-15 01:15:20,200 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 3021 transitions. Word has length 167 [2019-10-15 01:15:20,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:20,201 INFO L462 AbstractCegarLoop]: Abstraction has 2234 states and 3021 transitions. [2019-10-15 01:15:20,201 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:15:20,201 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 3021 transitions. [2019-10-15 01:15:20,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 01:15:20,213 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:20,213 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] [2019-10-15 01:15:20,423 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:20,423 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:20,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:20,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1255566063, now seen corresponding path program 1 times [2019-10-15 01:15:20,424 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:20,426 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640324888] [2019-10-15 01:15:20,426 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:20,426 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:20,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:20,656 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640324888] [2019-10-15 01:15:20,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893126356] [2019-10-15 01:15:20,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:21,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 2290 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:21,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:21,260 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:21,260 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:21,648 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:21,701 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:21,753 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:21,754 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:21,754 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:15:21,754 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445550412] [2019-10-15 01:15:21,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:21,757 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:21,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:21,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:15:21,759 INFO L87 Difference]: Start difference. First operand 2234 states and 3021 transitions. Second operand 7 states. [2019-10-15 01:15:22,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:22,929 INFO L93 Difference]: Finished difference Result 4441 states and 6013 transitions. [2019-10-15 01:15:22,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:15:22,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2019-10-15 01:15:22,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:22,945 INFO L225 Difference]: With dead ends: 4441 [2019-10-15 01:15:22,946 INFO L226 Difference]: Without dead ends: 2246 [2019-10-15 01:15:22,953 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 329 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:15:22,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2019-10-15 01:15:23,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2236. [2019-10-15 01:15:23,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2236 states. [2019-10-15 01:15:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 3024 transitions. [2019-10-15 01:15:23,084 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 3024 transitions. Word has length 170 [2019-10-15 01:15:23,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:23,085 INFO L462 AbstractCegarLoop]: Abstraction has 2236 states and 3024 transitions. [2019-10-15 01:15:23,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:23,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 3024 transitions. [2019-10-15 01:15:23,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:15:23,095 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:23,095 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] [2019-10-15 01:15:23,302 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:23,302 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:23,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:23,302 INFO L82 PathProgramCache]: Analyzing trace with hash -617847229, now seen corresponding path program 1 times [2019-10-15 01:15:23,303 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:23,303 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402555099] [2019-10-15 01:15:23,303 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:23,303 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:23,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:23,426 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402555099] [2019-10-15 01:15:23,426 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168338766] [2019-10-15 01:15:23,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:23,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 2288 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:23,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:15:24,113 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:24,414 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:24,482 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:24,547 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:24,641 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:24,641 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-15 01:15:24,641 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004843053] [2019-10-15 01:15:24,642 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:15:24,642 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:24,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:15:24,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:15:24,643 INFO L87 Difference]: Start difference. First operand 2236 states and 3024 transitions. Second operand 9 states. [2019-10-15 01:15:25,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:25,820 INFO L93 Difference]: Finished difference Result 4448 states and 6023 transitions. [2019-10-15 01:15:25,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:15:25,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2019-10-15 01:15:25,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:25,840 INFO L225 Difference]: With dead ends: 4448 [2019-10-15 01:15:25,840 INFO L226 Difference]: Without dead ends: 2254 [2019-10-15 01:15:25,854 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 326 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:15:25,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2019-10-15 01:15:26,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2252. [2019-10-15 01:15:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2252 states. [2019-10-15 01:15:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3040 transitions. [2019-10-15 01:15:26,026 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3040 transitions. Word has length 171 [2019-10-15 01:15:26,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:26,027 INFO L462 AbstractCegarLoop]: Abstraction has 2252 states and 3040 transitions. [2019-10-15 01:15:26,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:15:26,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3040 transitions. [2019-10-15 01:15:26,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-15 01:15:26,036 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:26,036 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] [2019-10-15 01:15:26,245 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:26,245 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:26,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:26,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1713530598, now seen corresponding path program 1 times [2019-10-15 01:15:26,247 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:26,247 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469896328] [2019-10-15 01:15:26,247 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:26,248 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:26,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:26,491 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469896328] [2019-10-15 01:15:26,491 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751703800] [2019-10-15 01:15:26,491 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 [2019-10-15 01:15:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:27,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 2289 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:27,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:27,350 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:27,650 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:27,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:27,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:27,926 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:27,926 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:27,927 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-15 01:15:27,927 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113593372] [2019-10-15 01:15:27,928 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:15:27,929 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:27,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:15:27,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:15:27,929 INFO L87 Difference]: Start difference. First operand 2252 states and 3040 transitions. Second operand 16 states. [2019-10-15 01:15:29,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:29,549 INFO L93 Difference]: Finished difference Result 4440 states and 6004 transitions. [2019-10-15 01:15:29,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:29,550 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2019-10-15 01:15:29,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:29,568 INFO L225 Difference]: With dead ends: 4440 [2019-10-15 01:15:29,568 INFO L226 Difference]: Without dead ends: 2276 [2019-10-15 01:15:29,577 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 328 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:15:29,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2019-10-15 01:15:29,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2274. [2019-10-15 01:15:29,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2274 states. [2019-10-15 01:15:29,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 3065 transitions. [2019-10-15 01:15:29,756 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 3065 transitions. Word has length 172 [2019-10-15 01:15:29,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:29,758 INFO L462 AbstractCegarLoop]: Abstraction has 2274 states and 3065 transitions. [2019-10-15 01:15:29,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:15:29,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 3065 transitions. [2019-10-15 01:15:29,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-15 01:15:29,766 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:29,767 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] [2019-10-15 01:15:29,976 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:29,976 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:29,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:29,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1921080529, now seen corresponding path program 2 times [2019-10-15 01:15:29,977 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:29,977 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758769810] [2019-10-15 01:15:29,978 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:29,978 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:29,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:30,156 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:15:30,156 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758769810] [2019-10-15 01:15:30,156 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750870485] [2019-10-15 01:15:30,157 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 [2019-10-15 01:15:30,790 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:15:30,791 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:30,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 2185 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:30,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:30,923 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:31,147 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:31,192 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:31,273 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:15:31,273 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:31,273 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-10-15 01:15:31,274 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345132238] [2019-10-15 01:15:31,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:15:31,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:31,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:15:31,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:15:31,280 INFO L87 Difference]: Start difference. First operand 2274 states and 3065 transitions. Second operand 11 states. [2019-10-15 01:15:32,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:32,575 INFO L93 Difference]: Finished difference Result 4225 states and 5663 transitions. [2019-10-15 01:15:32,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:15:32,576 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 173 [2019-10-15 01:15:32,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:32,589 INFO L225 Difference]: With dead ends: 4225 [2019-10-15 01:15:32,590 INFO L226 Difference]: Without dead ends: 2075 [2019-10-15 01:15:32,601 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 336 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:15:32,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2019-10-15 01:15:32,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2067. [2019-10-15 01:15:32,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2067 states. [2019-10-15 01:15:32,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 2734 transitions. [2019-10-15 01:15:32,845 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 2734 transitions. Word has length 173 [2019-10-15 01:15:32,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:32,846 INFO L462 AbstractCegarLoop]: Abstraction has 2067 states and 2734 transitions. [2019-10-15 01:15:32,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:15:32,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 2734 transitions. [2019-10-15 01:15:32,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-15 01:15:32,855 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:32,855 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] [2019-10-15 01:15:33,063 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:33,064 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:33,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:33,064 INFO L82 PathProgramCache]: Analyzing trace with hash 610354791, now seen corresponding path program 1 times [2019-10-15 01:15:33,064 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:33,064 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656528042] [2019-10-15 01:15:33,064 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:33,065 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:33,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:33,201 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:15:33,201 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656528042] [2019-10-15 01:15:33,201 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551697703] [2019-10-15 01:15:33,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:33,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 2291 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:33,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:33,803 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:33,803 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:34,112 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:34,186 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:34,248 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:34,380 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:34,381 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 20 [2019-10-15 01:15:34,382 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828768362] [2019-10-15 01:15:34,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:15:34,384 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:34,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:15:34,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:15:34,387 INFO L87 Difference]: Start difference. First operand 2067 states and 2734 transitions. Second operand 15 states.