java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:14:57,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:14:57,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:14:57,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:14:57,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:14:57,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:14:57,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:14:57,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:14:57,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:14:57,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:14:57,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:14:57,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:14:57,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:14:57,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:14:57,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:14:57,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:14:57,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:14:57,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:14:57,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:14:57,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:14:57,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:14:57,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:14:57,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:14:57,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:14:57,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:14:57,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:14:57,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:14:57,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:14:57,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:14:57,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:14:57,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:14:57,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:14:57,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:14:57,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:14:57,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:14:57,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:14:57,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:14:57,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:14:57,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:14:57,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:14:57,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:14:57,617 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:14:57,646 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:14:57,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:14:57,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:14:57,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:14:57,649 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:14:57,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:14:57,650 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:14:57,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:14:57,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:14:57,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:14:57,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:14:57,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:14:57,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:14:57,652 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:14:57,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:14:57,652 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:14:57,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:14:57,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:14:57,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:14:57,653 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:14:57,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:14:57,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:57,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:14:57,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:14:57,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:14:57,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:14:57,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:14:57,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:14:57,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:14:57,948 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:14:57,963 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:14:57,967 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:14:57,969 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:14:57,969 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:14:57,970 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product33.cil.c [2019-10-15 01:14:58,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4654e6019/71f4bd5b1a474aedb5c160bc6350e137/FLAGd2d9ce9dd [2019-10-15 01:14:58,734 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:14:58,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product33.cil.c [2019-10-15 01:14:58,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4654e6019/71f4bd5b1a474aedb5c160bc6350e137/FLAGd2d9ce9dd [2019-10-15 01:14:58,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4654e6019/71f4bd5b1a474aedb5c160bc6350e137 [2019-10-15 01:14:58,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:14:58,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:14:58,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:58,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:14:58,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:14:58,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:58" (1/1) ... [2019-10-15 01:14:58,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1763af5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:58, skipping insertion in model container [2019-10-15 01:14:58,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:58" (1/1) ... [2019-10-15 01:14:58,945 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:14:59,039 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:14:59,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:59,908 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:15:00,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:00,132 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:15:00,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:00 WrapperNode [2019-10-15 01:15:00,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:00,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:15:00,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:15:00,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:15:00,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:00" (1/1) ... [2019-10-15 01:15:00,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:00" (1/1) ... [2019-10-15 01:15:00,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:00" (1/1) ... [2019-10-15 01:15:00,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:00" (1/1) ... [2019-10-15 01:15:00,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:00" (1/1) ... [2019-10-15 01:15:00,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:00" (1/1) ... [2019-10-15 01:15:00,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:00" (1/1) ... [2019-10-15 01:15:00,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:15:00,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:15:00,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:15:00,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:15:00,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:00,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:15:00,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:15:00,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:00,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:15:00,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:15:00,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:00,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:15:00,407 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:00,407 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:15:00,408 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:15:00,408 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:15:00,408 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:15:00,408 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:15:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:15:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:15:00,410 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:15:00,412 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:15:00,413 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:15:00,413 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:15:00,413 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:15:00,414 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:15:00,414 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:15:00,414 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:15:00,414 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:15:00,414 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:15:00,415 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:15:00,415 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:15:00,415 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:15:00,415 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:15:00,415 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:15:00,415 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:15:00,415 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:15:00,416 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:15:00,416 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:15:00,416 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:15:00,416 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:15:00,417 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:15:00,417 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:15:00,417 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:15:00,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:15:00,417 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:15:00,417 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:15:00,417 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:15:00,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:15:00,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:15:00,418 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:15:00,418 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:15:00,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:15:00,418 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:15:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:15:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:15:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:15:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:15:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:15:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:15:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:15:00,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:15:00,420 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:15:00,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:15:00,420 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:15:00,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:15:00,420 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:15:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:15:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:15:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:15:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:15:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:15:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:15:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:15:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:15:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:15:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:15:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:15:00,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:15:00,423 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:15:00,424 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:15:00,424 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:15:00,424 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:15:00,424 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:15:00,425 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-15 01:15:00,425 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:15:00,425 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:15:00,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:15:00,426 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:15:00,426 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:15:00,427 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:15:00,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:00,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:00,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:00,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:15:00,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:15:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:15:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:15:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:15:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:15:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:15:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:15:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:15:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:15:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:15:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:15:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:15:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:15:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:15:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:15:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:15:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:15:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:15:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:15:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:15:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:15:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:15:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:15:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:15:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:15:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:15:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-15 01:15:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-15 01:15:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:15:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:15:00,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:15:00,434 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:15:00,434 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:15:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:15:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:15:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:15:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:15:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:15:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:15:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:15:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:15:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:15:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:15:00,438 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:15:00,438 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:15:00,438 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:15:00,439 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:15:00,442 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:15:00,442 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:15:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:15:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:15:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:15:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:15:00,445 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:15:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:15:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:15:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:15:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:15:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:15:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:15:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:15:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:15:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:15:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:15:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:15:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:15:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:15:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:15:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:15:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:15:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:15:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:15:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:15:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:15:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:15:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:15:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:15:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:15:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:15:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:15:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:15:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:15:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:15:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:15:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:15:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:15:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:15:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:15:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:15:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:15:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:15:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:15:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:15:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:15:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:15:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:15:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:15:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:15:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:15:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:15:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:15:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:15:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:15:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:15:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:15:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:15:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:15:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:15:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:15:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:15:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:15:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:15:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:15:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:15:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:15:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:15:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:15:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:15:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:15:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-15 01:15:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:15:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:15:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:15:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:15:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:15:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:15:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:15:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:15:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:15:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:15:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:15:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:15:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:15:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:15:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:15:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:15:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:15:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:15:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:15:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:15:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:15:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:15:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:15:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:15:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-15 01:15:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:15:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:15:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:15:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:15:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:15:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:15:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-15 01:15:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:15:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:15:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:15:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:15:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:15:02,937 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:15:02,937 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:15:02,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:02 BoogieIcfgContainer [2019-10-15 01:15:02,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:15:02,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:15:02,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:15:02,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:15:02,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:14:58" (1/3) ... [2019-10-15 01:15:02,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590c7070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:02, skipping insertion in model container [2019-10-15 01:15:02,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:00" (2/3) ... [2019-10-15 01:15:02,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590c7070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:02, skipping insertion in model container [2019-10-15 01:15:02,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:02" (3/3) ... [2019-10-15 01:15:02,948 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product33.cil.c [2019-10-15 01:15:02,958 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:15:02,968 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:15:02,981 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:15:03,012 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:15:03,013 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:15:03,013 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:15:03,013 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:15:03,013 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:15:03,013 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:15:03,013 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:15:03,014 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:15:03,045 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states. [2019-10-15 01:15:03,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-15 01:15:03,066 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:03,068 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:03,070 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:03,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:03,077 INFO L82 PathProgramCache]: Analyzing trace with hash -420941133, now seen corresponding path program 1 times [2019-10-15 01:15:03,087 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:03,088 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795983332] [2019-10-15 01:15:03,088 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:03,088 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:03,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:15:03,763 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795983332] [2019-10-15 01:15:03,764 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:03,764 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:15:03,765 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972924032] [2019-10-15 01:15:03,772 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:15:03,774 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:03,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:15:03,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:03,792 INFO L87 Difference]: Start difference. First operand 602 states. Second operand 2 states. [2019-10-15 01:15:03,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:03,894 INFO L93 Difference]: Finished difference Result 935 states and 1233 transitions. [2019-10-15 01:15:03,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:15:03,897 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 195 [2019-10-15 01:15:03,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:03,936 INFO L225 Difference]: With dead ends: 935 [2019-10-15 01:15:03,937 INFO L226 Difference]: Without dead ends: 579 [2019-10-15 01:15:03,949 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:03,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-10-15 01:15:04,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2019-10-15 01:15:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-10-15 01:15:04,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 765 transitions. [2019-10-15 01:15:04,094 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 765 transitions. Word has length 195 [2019-10-15 01:15:04,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:04,096 INFO L462 AbstractCegarLoop]: Abstraction has 579 states and 765 transitions. [2019-10-15 01:15:04,097 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:15:04,097 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 765 transitions. [2019-10-15 01:15:04,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-15 01:15:04,109 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:04,109 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:04,110 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:04,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:04,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1855300541, now seen corresponding path program 1 times [2019-10-15 01:15:04,113 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:04,113 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072421128] [2019-10-15 01:15:04,113 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:04,113 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:04,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:04,382 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:15:04,383 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072421128] [2019-10-15 01:15:04,383 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:04,383 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:04,383 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600853005] [2019-10-15 01:15:04,389 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:04,389 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:04,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:04,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:04,390 INFO L87 Difference]: Start difference. First operand 579 states and 765 transitions. Second operand 3 states. [2019-10-15 01:15:04,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:04,458 INFO L93 Difference]: Finished difference Result 918 states and 1196 transitions. [2019-10-15 01:15:04,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:04,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-10-15 01:15:04,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:04,464 INFO L225 Difference]: With dead ends: 918 [2019-10-15 01:15:04,464 INFO L226 Difference]: Without dead ends: 582 [2019-10-15 01:15:04,466 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:04,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2019-10-15 01:15:04,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 581. [2019-10-15 01:15:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2019-10-15 01:15:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 767 transitions. [2019-10-15 01:15:04,501 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 767 transitions. Word has length 196 [2019-10-15 01:15:04,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:04,503 INFO L462 AbstractCegarLoop]: Abstraction has 581 states and 767 transitions. [2019-10-15 01:15:04,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:04,503 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 767 transitions. [2019-10-15 01:15:04,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-10-15 01:15:04,512 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:04,512 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:04,513 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:04,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:04,513 INFO L82 PathProgramCache]: Analyzing trace with hash -2077671956, now seen corresponding path program 1 times [2019-10-15 01:15:04,513 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:04,513 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425687508] [2019-10-15 01:15:04,514 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:04,514 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:04,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:15:04,816 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425687508] [2019-10-15 01:15:04,816 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:04,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:04,817 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583477969] [2019-10-15 01:15:04,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:04,823 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:04,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:04,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:04,824 INFO L87 Difference]: Start difference. First operand 581 states and 767 transitions. Second operand 3 states. [2019-10-15 01:15:04,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:04,897 INFO L93 Difference]: Finished difference Result 1140 states and 1535 transitions. [2019-10-15 01:15:04,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:04,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2019-10-15 01:15:04,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:04,911 INFO L225 Difference]: With dead ends: 1140 [2019-10-15 01:15:04,911 INFO L226 Difference]: Without dead ends: 624 [2019-10-15 01:15:04,914 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:04,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2019-10-15 01:15:04,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 623. [2019-10-15 01:15:04,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-15 01:15:04,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 839 transitions. [2019-10-15 01:15:04,962 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 839 transitions. Word has length 208 [2019-10-15 01:15:04,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:04,966 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 839 transitions. [2019-10-15 01:15:04,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:04,967 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 839 transitions. [2019-10-15 01:15:04,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-15 01:15:04,977 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:04,978 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:04,978 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:04,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:04,981 INFO L82 PathProgramCache]: Analyzing trace with hash -339129856, now seen corresponding path program 1 times [2019-10-15 01:15:04,981 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:04,982 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979690472] [2019-10-15 01:15:04,982 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:04,982 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:04,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:15:05,347 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979690472] [2019-10-15 01:15:05,347 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:05,347 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:05,348 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977707650] [2019-10-15 01:15:05,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:05,349 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:05,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:05,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:05,350 INFO L87 Difference]: Start difference. First operand 623 states and 839 transitions. Second operand 3 states. [2019-10-15 01:15:05,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:05,393 INFO L93 Difference]: Finished difference Result 1263 states and 1746 transitions. [2019-10-15 01:15:05,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:05,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2019-10-15 01:15:05,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:05,400 INFO L225 Difference]: With dead ends: 1263 [2019-10-15 01:15:05,400 INFO L226 Difference]: Without dead ends: 705 [2019-10-15 01:15:05,402 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:05,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2019-10-15 01:15:05,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 704. [2019-10-15 01:15:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2019-10-15 01:15:05,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 977 transitions. [2019-10-15 01:15:05,438 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 977 transitions. Word has length 209 [2019-10-15 01:15:05,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:05,439 INFO L462 AbstractCegarLoop]: Abstraction has 704 states and 977 transitions. [2019-10-15 01:15:05,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:05,439 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 977 transitions. [2019-10-15 01:15:05,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-15 01:15:05,443 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:05,443 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:05,444 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:05,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:05,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1667814782, now seen corresponding path program 1 times [2019-10-15 01:15:05,444 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:05,445 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174511870] [2019-10-15 01:15:05,445 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:05,445 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:05,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:05,959 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:15:05,960 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174511870] [2019-10-15 01:15:05,961 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413360793] [2019-10-15 01:15:05,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:06,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:06,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:07,063 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:07,458 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:07,556 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:07,649 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:07,854 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:07,854 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:07,855 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-15 01:15:07,855 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962627940] [2019-10-15 01:15:07,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:15:07,856 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:07,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:15:07,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:15:07,857 INFO L87 Difference]: Start difference. First operand 704 states and 977 transitions. Second operand 9 states. [2019-10-15 01:15:10,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:10,641 INFO L93 Difference]: Finished difference Result 1386 states and 1934 transitions. [2019-10-15 01:15:10,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:15:10,642 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2019-10-15 01:15:10,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:10,648 INFO L225 Difference]: With dead ends: 1386 [2019-10-15 01:15:10,649 INFO L226 Difference]: Without dead ends: 718 [2019-10-15 01:15:10,652 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 413 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:15:10,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2019-10-15 01:15:10,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2019-10-15 01:15:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2019-10-15 01:15:10,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 995 transitions. [2019-10-15 01:15:10,688 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 995 transitions. Word has length 212 [2019-10-15 01:15:10,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:10,689 INFO L462 AbstractCegarLoop]: Abstraction has 718 states and 995 transitions. [2019-10-15 01:15:10,689 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:15:10,689 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 995 transitions. [2019-10-15 01:15:10,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-10-15 01:15:10,694 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:10,695 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:10,903 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:10,904 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:10,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:10,904 INFO L82 PathProgramCache]: Analyzing trace with hash 2040788742, now seen corresponding path program 1 times [2019-10-15 01:15:10,904 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:10,905 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730702702] [2019-10-15 01:15:10,905 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:10,905 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:10,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:11,463 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:15:11,464 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730702702] [2019-10-15 01:15:11,464 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146664874] [2019-10-15 01:15:11,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:12,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 2994 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:12,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:12,330 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:12,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:12,733 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:12,820 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:12,820 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-15 01:15:12,821 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850340724] [2019-10-15 01:15:12,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:12,822 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:12,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:12,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:15:12,823 INFO L87 Difference]: Start difference. First operand 718 states and 995 transitions. Second operand 7 states. [2019-10-15 01:15:14,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:14,721 INFO L93 Difference]: Finished difference Result 1387 states and 1940 transitions. [2019-10-15 01:15:14,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:15:14,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2019-10-15 01:15:14,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:14,726 INFO L225 Difference]: With dead ends: 1387 [2019-10-15 01:15:14,726 INFO L226 Difference]: Without dead ends: 720 [2019-10-15 01:15:14,733 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 420 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-15 01:15:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2019-10-15 01:15:14,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2019-10-15 01:15:14,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2019-10-15 01:15:14,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 998 transitions. [2019-10-15 01:15:14,791 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 998 transitions. Word has length 213 [2019-10-15 01:15:14,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:14,791 INFO L462 AbstractCegarLoop]: Abstraction has 720 states and 998 transitions. [2019-10-15 01:15:14,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:14,791 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 998 transitions. [2019-10-15 01:15:14,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-15 01:15:14,796 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:14,796 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:15,004 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:15,004 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:15,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:15,005 INFO L82 PathProgramCache]: Analyzing trace with hash -2011673792, now seen corresponding path program 1 times [2019-10-15 01:15:15,005 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:15,006 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478622078] [2019-10-15 01:15:15,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:15,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:15,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:15,423 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:15:15,424 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478622078] [2019-10-15 01:15:15,424 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153195102] [2019-10-15 01:15:15,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:16,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:16,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:15:16,339 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:16,707 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:16,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:16,871 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:17,000 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:17,000 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:17,001 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-15 01:15:17,001 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268954285] [2019-10-15 01:15:17,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:15:17,002 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:17,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:15:17,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:15:17,003 INFO L87 Difference]: Start difference. First operand 720 states and 998 transitions. Second operand 16 states. [2019-10-15 01:15:19,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:19,705 INFO L93 Difference]: Finished difference Result 1391 states and 1938 transitions. [2019-10-15 01:15:19,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:19,708 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 214 [2019-10-15 01:15:19,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:19,713 INFO L225 Difference]: With dead ends: 1391 [2019-10-15 01:15:19,713 INFO L226 Difference]: Without dead ends: 732 [2019-10-15 01:15:19,717 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 417 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-15 01:15:19,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2019-10-15 01:15:19,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 730. [2019-10-15 01:15:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 730 states. [2019-10-15 01:15:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1009 transitions. [2019-10-15 01:15:19,752 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1009 transitions. Word has length 214 [2019-10-15 01:15:19,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:19,753 INFO L462 AbstractCegarLoop]: Abstraction has 730 states and 1009 transitions. [2019-10-15 01:15:19,753 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:15:19,753 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1009 transitions. [2019-10-15 01:15:19,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-10-15 01:15:19,757 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:19,758 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:19,966 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:19,966 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:19,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:19,967 INFO L82 PathProgramCache]: Analyzing trace with hash -639100572, now seen corresponding path program 2 times [2019-10-15 01:15:19,967 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:19,968 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981310953] [2019-10-15 01:15:19,968 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:19,968 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:19,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:20,338 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981310953] [2019-10-15 01:15:20,338 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494129979] [2019-10-15 01:15:20,339 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:20,970 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:15:20,971 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:20,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:15:20,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:21,178 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:21,647 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:15:21,647 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:21,648 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-15 01:15:21,648 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031439240] [2019-10-15 01:15:21,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:15:21,649 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:21,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:15:21,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:15:21,650 INFO L87 Difference]: Start difference. First operand 730 states and 1009 transitions. Second operand 14 states. [2019-10-15 01:15:24,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:24,436 INFO L93 Difference]: Finished difference Result 2445 states and 3411 transitions. [2019-10-15 01:15:24,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:15:24,436 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 215 [2019-10-15 01:15:24,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:24,451 INFO L225 Difference]: With dead ends: 2445 [2019-10-15 01:15:24,452 INFO L226 Difference]: Without dead ends: 2122 [2019-10-15 01:15:24,455 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 428 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-15 01:15:24,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2019-10-15 01:15:24,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 1750. [2019-10-15 01:15:24,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1750 states. [2019-10-15 01:15:24,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2507 transitions. [2019-10-15 01:15:24,556 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2507 transitions. Word has length 215 [2019-10-15 01:15:24,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:24,556 INFO L462 AbstractCegarLoop]: Abstraction has 1750 states and 2507 transitions. [2019-10-15 01:15:24,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:15:24,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2507 transitions. [2019-10-15 01:15:24,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-15 01:15:24,564 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:24,564 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:24,781 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:24,782 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:24,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:24,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1539572673, now seen corresponding path program 1 times [2019-10-15 01:15:24,783 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:24,784 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467692418] [2019-10-15 01:15:24,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:24,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:24,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:25,120 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467692418] [2019-10-15 01:15:25,121 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403647727] [2019-10-15 01:15:25,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:25,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:25,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:15:25,955 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:26,267 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:26,354 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:26,442 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:26,575 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:26,576 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-15 01:15:26,576 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116544188] [2019-10-15 01:15:26,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:15:26,578 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:26,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:15:26,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:15:26,579 INFO L87 Difference]: Start difference. First operand 1750 states and 2507 transitions. Second operand 15 states. [2019-10-15 01:15:29,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:29,042 INFO L93 Difference]: Finished difference Result 3394 states and 4890 transitions. [2019-10-15 01:15:29,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:29,043 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 216 [2019-10-15 01:15:29,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:29,053 INFO L225 Difference]: With dead ends: 3394 [2019-10-15 01:15:29,053 INFO L226 Difference]: Without dead ends: 1756 [2019-10-15 01:15:29,059 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 421 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:15:29,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2019-10-15 01:15:29,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1750. [2019-10-15 01:15:29,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1750 states. [2019-10-15 01:15:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2505 transitions. [2019-10-15 01:15:29,140 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2505 transitions. Word has length 216 [2019-10-15 01:15:29,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:29,141 INFO L462 AbstractCegarLoop]: Abstraction has 1750 states and 2505 transitions. [2019-10-15 01:15:29,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:15:29,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2505 transitions. [2019-10-15 01:15:29,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-15 01:15:29,148 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:29,148 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:29,357 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:29,357 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:29,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:29,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1302834070, now seen corresponding path program 1 times [2019-10-15 01:15:29,358 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:29,358 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253899645] [2019-10-15 01:15:29,359 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:29,359 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:29,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:29,756 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:29,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253899645] [2019-10-15 01:15:29,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938929318] [2019-10-15 01:15:29,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:30,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:30,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:15:30,527 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:30,778 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:30,832 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:15:30,900 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:30,900 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-15 01:15:30,900 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669194872] [2019-10-15 01:15:30,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:15:30,901 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:30,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:15:30,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:15:30,902 INFO L87 Difference]: Start difference. First operand 1750 states and 2505 transitions. Second operand 12 states. [2019-10-15 01:15:32,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:32,954 INFO L93 Difference]: Finished difference Result 2733 states and 3848 transitions. [2019-10-15 01:15:32,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:15:32,954 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 217 [2019-10-15 01:15:32,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:32,964 INFO L225 Difference]: With dead ends: 2733 [2019-10-15 01:15:32,964 INFO L226 Difference]: Without dead ends: 1432 [2019-10-15 01:15:32,968 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 428 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:15:32,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2019-10-15 01:15:33,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1432. [2019-10-15 01:15:33,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1432 states. [2019-10-15 01:15:33,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1997 transitions. [2019-10-15 01:15:33,026 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1997 transitions. Word has length 217 [2019-10-15 01:15:33,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:33,027 INFO L462 AbstractCegarLoop]: Abstraction has 1432 states and 1997 transitions. [2019-10-15 01:15:33,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:15:33,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1997 transitions. [2019-10-15 01:15:33,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-15 01:15:33,032 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:33,033 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:33,241 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:33,242 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:33,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:33,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1375705736, now seen corresponding path program 2 times [2019-10-15 01:15:33,243 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:33,243 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144370288] [2019-10-15 01:15:33,244 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:33,244 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:33,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:33,529 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:15:33,530 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144370288] [2019-10-15 01:15:33,530 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916974092] [2019-10-15 01:15:33,530 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