/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:49:47,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:49:47,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:49:47,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:49:47,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:49:47,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:49:47,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:49:47,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:49:47,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:49:47,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:49:47,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:49:47,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:49:47,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:49:47,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:49:47,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:49:47,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:49:47,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:49:47,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:49:47,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:49:47,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:49:47,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:49:47,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:49:47,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:49:47,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:49:47,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:49:47,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:49:47,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:49:47,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:49:47,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:49:47,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:49:47,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:49:47,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:49:47,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:49:47,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:49:47,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:49:47,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:49:47,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:49:47,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:49:47,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:49:47,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:49:47,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:49:47,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:49:47,918 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:49:47,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:49:47,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:49:47,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:49:47,920 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:49:47,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:49:47,920 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:49:47,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:49:47,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:49:47,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:49:47,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:49:47,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:49:47,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:49:47,921 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:49:47,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:49:47,922 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:49:47,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:49:47,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:49:47,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:49:47,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:49:47,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:49:47,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:49:47,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:49:47,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:49:47,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:49:47,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:49:47,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:49:47,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:49:47,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:49:48,221 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:49:48,236 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:49:48,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:49:48,242 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:49:48,242 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:49:48,243 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product31.cil.c [2019-11-07 00:49:48,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4c485b9a/a20ce8ce0fa1453eb2cb09d3f8b3b6ac/FLAGdea07d48b [2019-11-07 00:49:48,971 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:49:48,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product31.cil.c [2019-11-07 00:49:48,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4c485b9a/a20ce8ce0fa1453eb2cb09d3f8b3b6ac/FLAGdea07d48b [2019-11-07 00:49:49,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4c485b9a/a20ce8ce0fa1453eb2cb09d3f8b3b6ac [2019-11-07 00:49:49,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:49:49,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:49:49,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:49:49,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:49:49,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:49:49,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:49:49" (1/1) ... [2019-11-07 00:49:49,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@117a0cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:49, skipping insertion in model container [2019-11-07 00:49:49,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:49:49" (1/1) ... [2019-11-07 00:49:49,185 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:49:49,264 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:49:50,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:49:50,056 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:49:50,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:49:50,290 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:49:50,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:50 WrapperNode [2019-11-07 00:49:50,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:49:50,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:49:50,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:49:50,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:49:50,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:50" (1/1) ... [2019-11-07 00:49:50,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:50" (1/1) ... [2019-11-07 00:49:50,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:50" (1/1) ... [2019-11-07 00:49:50,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:50" (1/1) ... [2019-11-07 00:49:50,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:50" (1/1) ... [2019-11-07 00:49:50,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:50" (1/1) ... [2019-11-07 00:49:50,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:50" (1/1) ... [2019-11-07 00:49:50,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:49:50,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:49:50,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:49:50,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:49:50,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:49:50,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:49:50,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:49:50,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:49:50,546 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:49:50,546 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:49:50,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:49:50,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:49:50,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:49:50,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:49:50,549 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:49:50,549 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:49:50,549 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:49:50,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:49:50,550 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:49:50,550 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:49:50,551 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:49:50,553 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:49:50,554 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:49:50,554 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:49:50,554 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:49:50,554 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:49:50,555 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:49:50,555 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:49:50,555 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:49:50,555 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:49:50,555 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:49:50,556 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:49:50,556 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:49:50,556 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:49:50,556 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:49:50,556 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:49:50,556 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:49:50,557 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:49:50,557 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:49:50,557 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:49:50,558 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:49:50,558 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:49:50,558 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:49:50,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:49:50,559 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:49:50,559 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:49:50,559 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:49:50,559 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:49:50,559 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:49:50,560 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:49:50,560 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:49:50,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:49:50,561 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:49:50,561 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:49:50,561 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:49:50,561 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:49:50,561 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:49:50,561 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:49:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:49:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:49:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:49:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:49:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:49:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:49:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:49:50,563 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:49:50,563 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:49:50,563 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:49:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:49:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:49:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:49:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:49:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:49:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:49:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:49:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:49:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:49:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:49:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:49:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:49:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:49:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:49:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:49:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-11-07 00:49:50,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:49:50,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:49:50,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:49:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:49:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:49:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:49:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:49:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:49:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:49:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-11-07 00:49:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:49:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:49:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:49:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:49:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:49:50,571 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:49:50,571 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:49:50,571 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:49:50,571 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:49:50,571 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:49:50,571 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:49:50,571 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:49:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:49:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:49:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:49:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:49:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:49:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:49:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:49:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-11-07 00:49:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:49:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:49:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:49:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:49:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:49:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:49:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:49:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:49:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:49:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:49:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:49:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:49:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:49:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:49:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:49:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:49:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:49:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:49:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:49:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:49:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:49:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:49:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:49:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:49:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:49:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:49:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:49:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:49:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:49:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:49:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:49:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:49:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:49:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:49:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:49:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:49:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:49:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:49:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:49:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:49:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:49:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:49:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:49:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:49:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:49:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:49:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:49:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:49:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:49:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:49:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:49:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:49:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:49:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:49:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:49:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:49:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:49:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:49:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:49:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:49:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:49:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:49:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:49:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:49:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:49:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:49:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:49:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:49:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:49:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:49:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:49:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:49:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:49:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:49:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:49:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:49:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:49:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:49:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:49:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:49:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:49:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:49:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:49:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:49:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:49:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:49:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:49:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:49:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:49:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:49:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:49:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:49:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:49:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-11-07 00:49:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:49:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:49:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:49:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:49:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:49:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:49:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:49:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:49:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:49:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:49:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:49:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:49:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:49:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:49:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:49:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:49:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:49:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:49:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:49:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:49:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:49:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:49:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:49:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:49:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:49:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:49:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:49:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:49:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:49:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:49:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-11-07 00:49:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:49:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:49:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:49:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:49:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:49:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-11-07 00:49:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:49:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:49:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:49:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:49:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:49:52,809 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:49:52,810 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:49:52,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:49:52 BoogieIcfgContainer [2019-11-07 00:49:52,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:49:52,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:49:52,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:49:52,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:49:52,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:49:49" (1/3) ... [2019-11-07 00:49:52,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41626784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:49:52, skipping insertion in model container [2019-11-07 00:49:52,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:50" (2/3) ... [2019-11-07 00:49:52,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41626784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:49:52, skipping insertion in model container [2019-11-07 00:49:52,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:49:52" (3/3) ... [2019-11-07 00:49:52,824 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product31.cil.c [2019-11-07 00:49:52,835 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:49:52,849 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:49:52,862 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:49:52,915 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:49:52,916 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:49:52,917 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:49:52,920 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:49:52,920 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:49:52,921 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:49:52,921 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:49:52,921 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:49:52,962 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states. [2019-11-07 00:49:52,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-11-07 00:49:52,999 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:53,005 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:53,008 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:53,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:53,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1257961618, now seen corresponding path program 1 times [2019-11-07 00:49:53,029 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:53,029 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922256265] [2019-11-07 00:49:53,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:53,771 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:49:53,772 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922256265] [2019-11-07 00:49:53,773 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:53,773 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:49:53,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779083983] [2019-11-07 00:49:53,781 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:49:53,783 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:53,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:49:53,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:49:53,800 INFO L87 Difference]: Start difference. First operand 560 states. Second operand 2 states. [2019-11-07 00:49:53,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:53,876 INFO L93 Difference]: Finished difference Result 862 states and 1137 transitions. [2019-11-07 00:49:53,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:49:53,878 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 211 [2019-11-07 00:49:53,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:53,901 INFO L225 Difference]: With dead ends: 862 [2019-11-07 00:49:53,902 INFO L226 Difference]: Without dead ends: 537 [2019-11-07 00:49:53,909 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:49:53,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2019-11-07 00:49:53,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2019-11-07 00:49:54,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-11-07 00:49:54,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 710 transitions. [2019-11-07 00:49:54,018 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 710 transitions. Word has length 211 [2019-11-07 00:49:54,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:54,022 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 710 transitions. [2019-11-07 00:49:54,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:49:54,022 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 710 transitions. [2019-11-07 00:49:54,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-11-07 00:49:54,031 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:54,031 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:54,031 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:54,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:54,032 INFO L82 PathProgramCache]: Analyzing trace with hash 836943149, now seen corresponding path program 1 times [2019-11-07 00:49:54,032 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:54,032 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366505481] [2019-11-07 00:49:54,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:54,335 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:49:54,335 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366505481] [2019-11-07 00:49:54,335 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:54,335 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:54,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881242624] [2019-11-07 00:49:54,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:54,349 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:54,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:54,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:54,350 INFO L87 Difference]: Start difference. First operand 537 states and 710 transitions. Second operand 3 states. [2019-11-07 00:49:54,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:54,405 INFO L93 Difference]: Finished difference Result 845 states and 1100 transitions. [2019-11-07 00:49:54,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:54,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 212 [2019-11-07 00:49:54,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:54,411 INFO L225 Difference]: With dead ends: 845 [2019-11-07 00:49:54,412 INFO L226 Difference]: Without dead ends: 540 [2019-11-07 00:49:54,415 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:54,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2019-11-07 00:49:54,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 539. [2019-11-07 00:49:54,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2019-11-07 00:49:54,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 712 transitions. [2019-11-07 00:49:54,448 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 712 transitions. Word has length 212 [2019-11-07 00:49:54,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:54,449 INFO L462 AbstractCegarLoop]: Abstraction has 539 states and 712 transitions. [2019-11-07 00:49:54,449 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:54,449 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 712 transitions. [2019-11-07 00:49:54,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-11-07 00:49:54,454 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:54,454 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:54,454 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:54,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:54,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1845626649, now seen corresponding path program 1 times [2019-11-07 00:49:54,455 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:54,455 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931750878] [2019-11-07 00:49:54,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:54,672 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:49:54,672 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931750878] [2019-11-07 00:49:54,673 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:54,673 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:54,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697749046] [2019-11-07 00:49:54,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:54,679 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:54,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:54,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:54,681 INFO L87 Difference]: Start difference. First operand 539 states and 712 transitions. Second operand 3 states. [2019-11-07 00:49:54,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:54,749 INFO L93 Difference]: Finished difference Result 1054 states and 1422 transitions. [2019-11-07 00:49:54,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:54,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2019-11-07 00:49:54,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:54,763 INFO L225 Difference]: With dead ends: 1054 [2019-11-07 00:49:54,763 INFO L226 Difference]: Without dead ends: 580 [2019-11-07 00:49:54,766 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:54,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2019-11-07 00:49:54,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 579. [2019-11-07 00:49:54,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-11-07 00:49:54,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 781 transitions. [2019-11-07 00:49:54,823 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 781 transitions. Word has length 218 [2019-11-07 00:49:54,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:54,825 INFO L462 AbstractCegarLoop]: Abstraction has 579 states and 781 transitions. [2019-11-07 00:49:54,825 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:54,826 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 781 transitions. [2019-11-07 00:49:54,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-11-07 00:49:54,837 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:54,837 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:54,838 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:54,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:54,839 INFO L82 PathProgramCache]: Analyzing trace with hash 460483544, now seen corresponding path program 1 times [2019-11-07 00:49:54,839 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:54,839 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943567920] [2019-11-07 00:49:54,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:49:55,478 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943567920] [2019-11-07 00:49:55,478 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372606127] [2019-11-07 00:49:55,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:56,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 2900 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:49:56,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:49:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:49:56,535 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:49:56,919 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:49:57,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:57,181 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:49:57,371 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:49:57,371 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-11-07 00:49:57,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648818143] [2019-11-07 00:49:57,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:49:57,372 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:57,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:49:57,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:49:57,374 INFO L87 Difference]: Start difference. First operand 579 states and 781 transitions. Second operand 9 states. [2019-11-07 00:49:58,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:58,905 INFO L93 Difference]: Finished difference Result 1136 states and 1542 transitions. [2019-11-07 00:49:58,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:49:58,906 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2019-11-07 00:49:58,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:58,910 INFO L225 Difference]: With dead ends: 1136 [2019-11-07 00:49:58,910 INFO L226 Difference]: Without dead ends: 593 [2019-11-07 00:49:58,912 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 427 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:49:58,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2019-11-07 00:49:58,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2019-11-07 00:49:58,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2019-11-07 00:49:58,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 799 transitions. [2019-11-07 00:49:58,940 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 799 transitions. Word has length 219 [2019-11-07 00:49:58,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:58,940 INFO L462 AbstractCegarLoop]: Abstraction has 593 states and 799 transitions. [2019-11-07 00:49:58,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:49:58,940 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 799 transitions. [2019-11-07 00:49:58,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-11-07 00:49:58,944 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:58,945 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:59,161 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:59,162 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:59,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:59,163 INFO L82 PathProgramCache]: Analyzing trace with hash 572253340, now seen corresponding path program 1 times [2019-11-07 00:49:59,163 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:59,164 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827828182] [2019-11-07 00:49:59,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:49:59,592 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827828182] [2019-11-07 00:49:59,592 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217725435] [2019-11-07 00:49:59,593 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 [2019-11-07 00:50:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:00,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 2901 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:50:00,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:50:00,672 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:00,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:01,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:01,128 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:50:01,128 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-11-07 00:50:01,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066481835] [2019-11-07 00:50:01,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:50:01,131 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:01,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:50:01,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:50:01,132 INFO L87 Difference]: Start difference. First operand 593 states and 799 transitions. Second operand 7 states. [2019-11-07 00:50:02,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:02,422 INFO L93 Difference]: Finished difference Result 1137 states and 1546 transitions. [2019-11-07 00:50:02,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:50:02,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2019-11-07 00:50:02,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:02,430 INFO L225 Difference]: With dead ends: 1137 [2019-11-07 00:50:02,430 INFO L226 Difference]: Without dead ends: 595 [2019-11-07 00:50:02,432 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 434 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-11-07 00:50:02,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-11-07 00:50:02,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-11-07 00:50:02,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-11-07 00:50:02,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 802 transitions. [2019-11-07 00:50:02,467 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 802 transitions. Word has length 220 [2019-11-07 00:50:02,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:02,467 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 802 transitions. [2019-11-07 00:50:02,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:50:02,468 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 802 transitions. [2019-11-07 00:50:02,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-11-07 00:50:02,472 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:02,472 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:02,688 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:02,688 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:02,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:02,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1312168313, now seen corresponding path program 1 times [2019-11-07 00:50:02,689 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:02,689 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808862163] [2019-11-07 00:50:02,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:50:03,104 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808862163] [2019-11-07 00:50:03,104 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805047359] [2019-11-07 00:50:03,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:03,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 2902 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:50:03,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:04,088 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:50:04,089 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:04,429 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:50:04,512 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:04,593 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:04,725 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:04,726 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:04,726 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-11-07 00:50:04,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668899437] [2019-11-07 00:50:04,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:50:04,728 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:04,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:50:04,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 00:50:04,729 INFO L87 Difference]: Start difference. First operand 595 states and 802 transitions. Second operand 16 states. [2019-11-07 00:50:07,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:07,003 INFO L93 Difference]: Finished difference Result 1141 states and 1546 transitions. [2019-11-07 00:50:07,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:50:07,004 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 221 [2019-11-07 00:50:07,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:07,011 INFO L225 Difference]: With dead ends: 1141 [2019-11-07 00:50:07,012 INFO L226 Difference]: Without dead ends: 607 [2019-11-07 00:50:07,016 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 431 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 00:50:07,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2019-11-07 00:50:07,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 605. [2019-11-07 00:50:07,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2019-11-07 00:50:07,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 813 transitions. [2019-11-07 00:50:07,064 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 813 transitions. Word has length 221 [2019-11-07 00:50:07,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:07,065 INFO L462 AbstractCegarLoop]: Abstraction has 605 states and 813 transitions. [2019-11-07 00:50:07,065 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:50:07,065 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 813 transitions. [2019-11-07 00:50:07,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-11-07 00:50:07,071 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:07,072 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:07,279 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:07,280 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:07,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:07,281 INFO L82 PathProgramCache]: Analyzing trace with hash -283937073, now seen corresponding path program 2 times [2019-11-07 00:50:07,281 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:07,281 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716237777] [2019-11-07 00:50:07,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:07,705 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716237777] [2019-11-07 00:50:07,705 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298442164] [2019-11-07 00:50:07,705 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:08,509 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:50:08,584 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:50:08,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 2297 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:50:08,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:08,841 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:50:08,842 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:50:09,326 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:09,326 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-11-07 00:50:09,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515421638] [2019-11-07 00:50:09,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:50:09,327 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:09,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:50:09,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:50:09,328 INFO L87 Difference]: Start difference. First operand 605 states and 813 transitions. Second operand 14 states. [2019-11-07 00:50:11,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:11,471 INFO L93 Difference]: Finished difference Result 2039 states and 2774 transitions. [2019-11-07 00:50:11,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:50:11,475 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 222 [2019-11-07 00:50:11,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:11,486 INFO L225 Difference]: With dead ends: 2039 [2019-11-07 00:50:11,486 INFO L226 Difference]: Without dead ends: 1747 [2019-11-07 00:50:11,489 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 442 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-11-07 00:50:11,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2019-11-07 00:50:11,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1407. [2019-11-07 00:50:11,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1407 states. [2019-11-07 00:50:11,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1953 transitions. [2019-11-07 00:50:11,570 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1953 transitions. Word has length 222 [2019-11-07 00:50:11,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:11,574 INFO L462 AbstractCegarLoop]: Abstraction has 1407 states and 1953 transitions. [2019-11-07 00:50:11,574 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:50:11,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1953 transitions. [2019-11-07 00:50:11,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2019-11-07 00:50:11,582 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:11,582 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:11,789 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:11,789 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:11,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:11,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1231802037, now seen corresponding path program 1 times [2019-11-07 00:50:11,790 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:11,791 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703690777] [2019-11-07 00:50:11,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:12,115 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:12,115 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703690777] [2019-11-07 00:50:12,116 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652065383] [2019-11-07 00:50:12,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:12,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 2904 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:50:12,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:50:13,008 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:13,410 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:50:13,497 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:13,577 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:13,734 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:13,734 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:13,734 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-11-07 00:50:13,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146384713] [2019-11-07 00:50:13,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:50:13,736 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:13,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:50:13,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:50:13,737 INFO L87 Difference]: Start difference. First operand 1407 states and 1953 transitions. Second operand 15 states. [2019-11-07 00:50:15,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:15,329 INFO L93 Difference]: Finished difference Result 2708 states and 3782 transitions. [2019-11-07 00:50:15,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:50:15,330 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 223 [2019-11-07 00:50:15,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:15,338 INFO L225 Difference]: With dead ends: 2708 [2019-11-07 00:50:15,339 INFO L226 Difference]: Without dead ends: 1413 [2019-11-07 00:50:15,345 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 435 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:50:15,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2019-11-07 00:50:15,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1407. [2019-11-07 00:50:15,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1407 states. [2019-11-07 00:50:15,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1951 transitions. [2019-11-07 00:50:15,421 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1951 transitions. Word has length 223 [2019-11-07 00:50:15,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:15,421 INFO L462 AbstractCegarLoop]: Abstraction has 1407 states and 1951 transitions. [2019-11-07 00:50:15,421 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:50:15,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1951 transitions. [2019-11-07 00:50:15,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-11-07 00:50:15,427 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:15,427 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:15,641 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:15,641 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:15,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:15,642 INFO L82 PathProgramCache]: Analyzing trace with hash 982754150, now seen corresponding path program 1 times [2019-11-07 00:50:15,642 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:15,643 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387601449] [2019-11-07 00:50:15,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:15,934 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:15,934 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387601449] [2019-11-07 00:50:15,934 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904928129] [2019-11-07 00:50:15,934 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 [2019-11-07 00:50:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:16,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:50:16,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:50:16,787 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:17,064 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:17,115 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:17,202 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:50:17,202 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:17,202 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-11-07 00:50:17,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577285420] [2019-11-07 00:50:17,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:50:17,204 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:17,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:50:17,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:50:17,204 INFO L87 Difference]: Start difference. First operand 1407 states and 1951 transitions. Second operand 12 states. [2019-11-07 00:50:18,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:18,600 INFO L93 Difference]: Finished difference Result 2235 states and 3058 transitions. [2019-11-07 00:50:18,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:50:18,600 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 224 [2019-11-07 00:50:18,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:18,608 INFO L225 Difference]: With dead ends: 2235 [2019-11-07 00:50:18,608 INFO L226 Difference]: Without dead ends: 1183 [2019-11-07 00:50:18,612 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 442 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:50:18,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2019-11-07 00:50:18,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2019-11-07 00:50:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2019-11-07 00:50:18,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1602 transitions. [2019-11-07 00:50:18,659 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1602 transitions. Word has length 224 [2019-11-07 00:50:18,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:18,659 INFO L462 AbstractCegarLoop]: Abstraction has 1183 states and 1602 transitions. [2019-11-07 00:50:18,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:50:18,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1602 transitions. [2019-11-07 00:50:18,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-11-07 00:50:18,664 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:18,664 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:18,871 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:18,872 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:18,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:18,872 INFO L82 PathProgramCache]: Analyzing trace with hash -481533873, now seen corresponding path program 2 times [2019-11-07 00:50:18,873 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:18,873 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429480356] [2019-11-07 00:50:18,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:19,189 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:50:19,190 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429480356] [2019-11-07 00:50:19,190 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169634089] [2019-11-07 00:50:19,190 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:19,784 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:50:19,784 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:50:19,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 2300 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:50:19,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:50:19,922 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:50:20,380 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:20,381 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15] total 27 [2019-11-07 00:50:20,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771593809] [2019-11-07 00:50:20,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:50:20,382 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:20,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:50:20,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2019-11-07 00:50:20,383 INFO L87 Difference]: Start difference. First operand 1183 states and 1602 transitions. Second operand 14 states. [2019-11-07 00:50:23,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:23,004 INFO L93 Difference]: Finished difference Result 4039 states and 5535 transitions. [2019-11-07 00:50:23,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:50:23,005 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 225 [2019-11-07 00:50:23,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:23,026 INFO L225 Difference]: With dead ends: 4039 [2019-11-07 00:50:23,026 INFO L226 Difference]: Without dead ends: 3448 [2019-11-07 00:50:23,030 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 449 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=1534, Unknown=0, NotChecked=0, Total=1722 [2019-11-07 00:50:23,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3448 states. [2019-11-07 00:50:23,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3448 to 2766. [2019-11-07 00:50:23,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2766 states. [2019-11-07 00:50:23,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 3875 transitions. [2019-11-07 00:50:23,177 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 3875 transitions. Word has length 225 [2019-11-07 00:50:23,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:23,178 INFO L462 AbstractCegarLoop]: Abstraction has 2766 states and 3875 transitions. [2019-11-07 00:50:23,178 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:50:23,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 3875 transitions. [2019-11-07 00:50:23,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-11-07 00:50:23,191 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:23,191 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]