/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:52:34,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:52:34,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:52:34,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:52:34,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:52:34,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:52:34,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:52:34,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:52:34,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:52:34,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:52:34,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:52:34,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:52:34,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:52:34,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:52:34,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:52:34,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:52:34,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:52:34,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:52:34,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:52:34,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:52:34,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:52:34,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:52:34,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:52:34,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:52:34,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:52:34,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:52:34,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:52:34,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:52:34,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:52:34,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:52:34,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:52:34,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:52:34,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:52:34,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:52:34,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:52:34,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:52:34,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:52:34,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:52:34,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:52:34,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:52:34,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:52:34,672 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:52:34,697 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:52:34,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:52:34,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:52:34,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:52:34,698 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:52:34,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:52:34,699 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:52:34,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:52:34,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:52:34,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:52:34,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:52:34,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:52:34,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:52:34,701 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:52:34,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:52:34,702 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:52:34,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:52:34,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:52:34,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:52:34,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:52:34,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:52:34,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:52:34,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:52:34,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:52:34,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:52:34,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:52:34,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:52:34,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:52:34,705 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:52:34,964 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:52:34,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:52:34,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:52:34,977 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:52:34,978 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:52:34,979 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product32.cil.c [2019-11-07 00:52:35,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed31d069/b994d452f849427fa86dfb35279269fa/FLAG55ac1407e [2019-11-07 00:52:35,691 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:52:35,691 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product32.cil.c [2019-11-07 00:52:35,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed31d069/b994d452f849427fa86dfb35279269fa/FLAG55ac1407e [2019-11-07 00:52:35,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed31d069/b994d452f849427fa86dfb35279269fa [2019-11-07 00:52:35,899 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:52:35,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:52:35,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:52:35,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:52:35,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:52:35,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:35" (1/1) ... [2019-11-07 00:52:35,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f4a1e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:35, skipping insertion in model container [2019-11-07 00:52:35,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:35" (1/1) ... [2019-11-07 00:52:35,916 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:52:35,994 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:52:36,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:52:36,730 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:52:36,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:52:37,038 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:52:37,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:37 WrapperNode [2019-11-07 00:52:37,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:52:37,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:52:37,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:52:37,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:52:37,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:37" (1/1) ... [2019-11-07 00:52:37,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:37" (1/1) ... [2019-11-07 00:52:37,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:37" (1/1) ... [2019-11-07 00:52:37,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:37" (1/1) ... [2019-11-07 00:52:37,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:37" (1/1) ... [2019-11-07 00:52:37,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:37" (1/1) ... [2019-11-07 00:52:37,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:37" (1/1) ... [2019-11-07 00:52:37,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:52:37,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:52:37,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:52:37,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:52:37,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:52:37,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:52:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:52:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:52:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:52:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:52:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:52:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:52:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:52:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:52:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:52:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:52:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:52:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:52:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:52:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:52:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:52:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:52:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:52:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:52:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:52:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:52:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:52:37,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:52:37,349 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:52:37,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:52:37,349 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:52:37,349 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:52:37,350 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:52:37,350 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:52:37,350 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:52:37,350 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:52:37,350 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:52:37,350 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:52:37,351 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:52:37,351 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:52:37,351 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:52:37,351 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:52:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:52:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:52:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:52:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:52:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:52:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:52:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:52:37,353 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:52:37,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:52:37,353 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:52:37,353 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:52:37,353 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:52:37,353 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:52:37,353 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:52:37,354 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:52:37,354 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:52:37,354 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:52:37,354 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:52:37,354 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:52:37,354 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:52:37,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:52:37,355 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:52:37,355 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 00:52:37,355 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-11-07 00:52:37,355 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:52:37,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:52:37,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:52:37,356 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:52:37,356 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:52:37,356 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:52:37,357 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:52:37,357 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:52:37,357 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 00:52:37,357 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:52:37,357 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:52:37,357 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:52:37,358 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:52:37,358 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:52:37,358 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:52:37,359 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:52:37,359 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:52:37,359 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:52:37,360 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:52:37,360 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:52:37,360 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:52:37,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:52:37,361 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:52:37,362 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:52:37,362 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:52:37,362 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:52:37,363 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:52:37,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:52:37,364 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:52:37,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:52:37,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:52:37,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:52:37,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:52:37,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:52:37,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:52:37,365 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:52:37,365 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:52:37,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:52:37,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:52:37,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:52:37,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:52:37,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:52:37,366 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:52:37,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:52:37,366 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:52:37,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:52:37,366 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:52:37,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:52:37,367 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:52:37,367 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:52:37,367 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:52:37,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:52:37,367 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:52:37,367 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:52:37,368 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:52:37,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:52:37,368 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:52:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:52:37,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:52:37,369 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:52:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:52:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:52:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:52:37,372 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:52:37,372 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:52:37,372 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:52:37,372 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:52:37,372 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:52:37,373 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:52:37,373 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:52:37,373 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:52:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:52:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:52:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:52:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:52:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:52:37,378 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:52:37,378 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:52:37,379 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:52:37,379 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:52:37,379 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:52:37,380 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:52:37,380 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:52:37,387 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:52:37,387 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:52:37,387 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:52:37,387 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:52:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:52:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:52:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:52:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:52:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:52:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:52:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:52:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:52:37,389 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:52:37,389 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:52:37,389 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:52:37,389 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:52:37,390 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:52:37,390 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:52:37,390 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:52:37,390 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:52:37,390 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:52:37,390 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:52:37,390 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:52:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:52:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:52:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:52:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:52:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:52:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:52:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:52:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:52:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:52:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:52:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:52:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:52:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:52:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:52:37,393 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:52:37,393 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:52:37,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:52:37,393 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:52:37,393 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:52:37,393 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:52:37,393 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:52:37,393 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:52:37,394 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:52:37,394 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:52:37,394 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:52:37,394 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:52:37,394 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:52:37,394 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:52:37,394 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:52:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:52:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:52:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:52:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:52:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 00:52:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-11-07 00:52:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:52:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:52:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:52:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:52:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:52:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:52:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:52:37,397 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:52:37,397 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:52:37,397 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:52:37,397 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:52:37,397 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:52:37,397 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:52:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:52:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:52:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:52:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:52:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:52:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:52:37,399 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 00:52:37,399 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:52:37,399 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:52:37,399 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:52:37,399 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:52:37,399 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:52:37,399 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:52:37,400 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:52:37,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:52:37,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:52:37,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:52:37,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:52:37,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:52:37,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:52:37,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:52:37,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:52:37,401 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:52:37,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:52:37,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:52:37,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:52:37,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:52:37,402 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:52:37,402 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:52:37,402 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:52:37,402 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:52:37,402 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:52:37,403 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:52:37,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:52:37,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:52:37,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:52:39,551 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:52:39,552 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:52:39,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:39 BoogieIcfgContainer [2019-11-07 00:52:39,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:52:39,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:52:39,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:52:39,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:52:39,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:52:35" (1/3) ... [2019-11-07 00:52:39,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ca4bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:39, skipping insertion in model container [2019-11-07 00:52:39,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:37" (2/3) ... [2019-11-07 00:52:39,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ca4bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:39, skipping insertion in model container [2019-11-07 00:52:39,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:39" (3/3) ... [2019-11-07 00:52:39,564 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product32.cil.c [2019-11-07 00:52:39,579 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:52:39,589 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:52:39,600 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:52:39,631 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:52:39,632 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:52:39,632 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:52:39,632 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:52:39,632 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:52:39,632 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:52:39,632 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:52:39,632 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:52:39,665 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states. [2019-11-07 00:52:39,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-11-07 00:52:39,688 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:39,689 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:39,692 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:39,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:39,699 INFO L82 PathProgramCache]: Analyzing trace with hash 460180424, now seen corresponding path program 1 times [2019-11-07 00:52:39,710 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:39,710 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248458542] [2019-11-07 00:52:39,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:40,369 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:40,370 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248458542] [2019-11-07 00:52:40,371 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:40,371 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:52:40,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347150291] [2019-11-07 00:52:40,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:52:40,380 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:40,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:52:40,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:52:40,398 INFO L87 Difference]: Start difference. First operand 637 states. Second operand 2 states. [2019-11-07 00:52:40,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:40,483 INFO L93 Difference]: Finished difference Result 904 states and 1227 transitions. [2019-11-07 00:52:40,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:52:40,484 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 173 [2019-11-07 00:52:40,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:40,510 INFO L225 Difference]: With dead ends: 904 [2019-11-07 00:52:40,510 INFO L226 Difference]: Without dead ends: 580 [2019-11-07 00:52:40,517 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:52:40,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2019-11-07 00:52:40,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2019-11-07 00:52:40,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2019-11-07 00:52:40,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 792 transitions. [2019-11-07 00:52:40,638 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 792 transitions. Word has length 173 [2019-11-07 00:52:40,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:40,641 INFO L462 AbstractCegarLoop]: Abstraction has 580 states and 792 transitions. [2019-11-07 00:52:40,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:52:40,641 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 792 transitions. [2019-11-07 00:52:40,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-11-07 00:52:40,652 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:40,652 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:40,653 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:40,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:40,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1260551552, now seen corresponding path program 1 times [2019-11-07 00:52:40,653 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:40,653 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143395502] [2019-11-07 00:52:40,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:40,963 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143395502] [2019-11-07 00:52:40,964 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:40,964 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:40,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645592432] [2019-11-07 00:52:40,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:40,966 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:40,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:40,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:40,967 INFO L87 Difference]: Start difference. First operand 580 states and 792 transitions. Second operand 3 states. [2019-11-07 00:52:41,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:41,058 INFO L93 Difference]: Finished difference Result 887 states and 1192 transitions. [2019-11-07 00:52:41,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:41,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-11-07 00:52:41,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:41,074 INFO L225 Difference]: With dead ends: 887 [2019-11-07 00:52:41,074 INFO L226 Difference]: Without dead ends: 583 [2019-11-07 00:52:41,080 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:41,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2019-11-07 00:52:41,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 582. [2019-11-07 00:52:41,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2019-11-07 00:52:41,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 794 transitions. [2019-11-07 00:52:41,130 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 794 transitions. Word has length 174 [2019-11-07 00:52:41,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:41,131 INFO L462 AbstractCegarLoop]: Abstraction has 582 states and 794 transitions. [2019-11-07 00:52:41,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:41,132 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 794 transitions. [2019-11-07 00:52:41,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-11-07 00:52:41,140 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:41,140 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:41,140 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:41,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:41,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1891942096, now seen corresponding path program 1 times [2019-11-07 00:52:41,141 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:41,141 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297877070] [2019-11-07 00:52:41,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:41,362 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297877070] [2019-11-07 00:52:41,362 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:41,362 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:41,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079843546] [2019-11-07 00:52:41,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:41,367 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:41,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:41,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:41,368 INFO L87 Difference]: Start difference. First operand 582 states and 794 transitions. Second operand 3 states. [2019-11-07 00:52:41,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:41,417 INFO L93 Difference]: Finished difference Result 1142 states and 1589 transitions. [2019-11-07 00:52:41,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:41,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2019-11-07 00:52:41,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:41,426 INFO L225 Difference]: With dead ends: 1142 [2019-11-07 00:52:41,426 INFO L226 Difference]: Without dead ends: 625 [2019-11-07 00:52:41,429 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:41,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2019-11-07 00:52:41,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 624. [2019-11-07 00:52:41,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2019-11-07 00:52:41,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 866 transitions. [2019-11-07 00:52:41,463 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 866 transitions. Word has length 184 [2019-11-07 00:52:41,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:41,464 INFO L462 AbstractCegarLoop]: Abstraction has 624 states and 866 transitions. [2019-11-07 00:52:41,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:41,464 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 866 transitions. [2019-11-07 00:52:41,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-11-07 00:52:41,469 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:41,469 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:41,469 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:41,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:41,471 INFO L82 PathProgramCache]: Analyzing trace with hash -754508202, now seen corresponding path program 1 times [2019-11-07 00:52:41,471 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:41,471 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016947798] [2019-11-07 00:52:41,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:41,687 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016947798] [2019-11-07 00:52:41,687 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:41,690 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:41,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208633309] [2019-11-07 00:52:41,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:41,692 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:41,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:41,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:41,693 INFO L87 Difference]: Start difference. First operand 624 states and 866 transitions. Second operand 3 states. [2019-11-07 00:52:41,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:41,744 INFO L93 Difference]: Finished difference Result 1265 states and 1800 transitions. [2019-11-07 00:52:41,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:41,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2019-11-07 00:52:41,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:41,750 INFO L225 Difference]: With dead ends: 1265 [2019-11-07 00:52:41,750 INFO L226 Difference]: Without dead ends: 706 [2019-11-07 00:52:41,752 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:41,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2019-11-07 00:52:41,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 705. [2019-11-07 00:52:41,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2019-11-07 00:52:41,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 1004 transitions. [2019-11-07 00:52:41,792 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 1004 transitions. Word has length 185 [2019-11-07 00:52:41,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:41,793 INFO L462 AbstractCegarLoop]: Abstraction has 705 states and 1004 transitions. [2019-11-07 00:52:41,793 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:41,793 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 1004 transitions. [2019-11-07 00:52:41,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-11-07 00:52:41,797 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:41,797 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:41,797 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:41,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:41,798 INFO L82 PathProgramCache]: Analyzing trace with hash 852653136, now seen corresponding path program 1 times [2019-11-07 00:52:41,798 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:41,798 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127112212] [2019-11-07 00:52:41,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:41,935 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:41,935 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127112212] [2019-11-07 00:52:41,936 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:41,936 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:41,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959667220] [2019-11-07 00:52:41,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:41,937 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:41,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:41,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:41,938 INFO L87 Difference]: Start difference. First operand 705 states and 1004 transitions. Second operand 3 states. [2019-11-07 00:52:41,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:41,980 INFO L93 Difference]: Finished difference Result 1502 states and 2204 transitions. [2019-11-07 00:52:41,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:41,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2019-11-07 00:52:41,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:41,986 INFO L225 Difference]: With dead ends: 1502 [2019-11-07 00:52:41,986 INFO L226 Difference]: Without dead ends: 862 [2019-11-07 00:52:41,989 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:41,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2019-11-07 00:52:42,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 861. [2019-11-07 00:52:42,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2019-11-07 00:52:42,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1268 transitions. [2019-11-07 00:52:42,022 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1268 transitions. Word has length 186 [2019-11-07 00:52:42,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:42,022 INFO L462 AbstractCegarLoop]: Abstraction has 861 states and 1268 transitions. [2019-11-07 00:52:42,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:42,022 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1268 transitions. [2019-11-07 00:52:42,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-11-07 00:52:42,027 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:42,027 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:42,027 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:42,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:42,028 INFO L82 PathProgramCache]: Analyzing trace with hash -2089090250, now seen corresponding path program 1 times [2019-11-07 00:52:42,028 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:42,028 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607428011] [2019-11-07 00:52:42,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:42,226 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:42,227 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607428011] [2019-11-07 00:52:42,227 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:42,227 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:42,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428990251] [2019-11-07 00:52:42,228 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:42,228 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:42,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:42,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:42,229 INFO L87 Difference]: Start difference. First operand 861 states and 1268 transitions. Second operand 3 states. [2019-11-07 00:52:42,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:42,279 INFO L93 Difference]: Finished difference Result 1958 states and 2976 transitions. [2019-11-07 00:52:42,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:42,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2019-11-07 00:52:42,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:42,287 INFO L225 Difference]: With dead ends: 1958 [2019-11-07 00:52:42,287 INFO L226 Difference]: Without dead ends: 1162 [2019-11-07 00:52:42,291 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:42,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2019-11-07 00:52:42,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1161. [2019-11-07 00:52:42,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1161 states. [2019-11-07 00:52:42,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1772 transitions. [2019-11-07 00:52:42,355 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1772 transitions. Word has length 187 [2019-11-07 00:52:42,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:42,356 INFO L462 AbstractCegarLoop]: Abstraction has 1161 states and 1772 transitions. [2019-11-07 00:52:42,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:42,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1772 transitions. [2019-11-07 00:52:42,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-11-07 00:52:42,363 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:42,364 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:42,364 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:42,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:42,364 INFO L82 PathProgramCache]: Analyzing trace with hash -579760363, now seen corresponding path program 1 times [2019-11-07 00:52:42,365 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:42,365 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814691933] [2019-11-07 00:52:42,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:42,636 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814691933] [2019-11-07 00:52:42,637 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:42,637 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:52:42,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315271381] [2019-11-07 00:52:42,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:52:42,638 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:42,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:52:42,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:52:42,639 INFO L87 Difference]: Start difference. First operand 1161 states and 1772 transitions. Second operand 7 states. [2019-11-07 00:52:46,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:46,167 INFO L93 Difference]: Finished difference Result 1761 states and 2565 transitions. [2019-11-07 00:52:46,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:52:46,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2019-11-07 00:52:46,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:46,198 INFO L225 Difference]: With dead ends: 1761 [2019-11-07 00:52:46,198 INFO L226 Difference]: Without dead ends: 1468 [2019-11-07 00:52:46,201 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:52:46,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2019-11-07 00:52:46,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1459. [2019-11-07 00:52:46,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1459 states. [2019-11-07 00:52:46,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2165 transitions. [2019-11-07 00:52:46,281 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2165 transitions. Word has length 190 [2019-11-07 00:52:46,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:46,282 INFO L462 AbstractCegarLoop]: Abstraction has 1459 states and 2165 transitions. [2019-11-07 00:52:46,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:52:46,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2165 transitions. [2019-11-07 00:52:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-11-07 00:52:46,289 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:46,289 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:46,289 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:46,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:46,290 INFO L82 PathProgramCache]: Analyzing trace with hash -810631432, now seen corresponding path program 1 times [2019-11-07 00:52:46,290 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:46,290 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980632056] [2019-11-07 00:52:46,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:46,628 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980632056] [2019-11-07 00:52:46,628 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:46,628 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2019-11-07 00:52:46,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161271391] [2019-11-07 00:52:46,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-07 00:52:46,629 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:46,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-07 00:52:46,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:52:46,630 INFO L87 Difference]: Start difference. First operand 1459 states and 2165 transitions. Second operand 20 states. [2019-11-07 00:52:47,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:47,183 INFO L93 Difference]: Finished difference Result 2166 states and 3119 transitions. [2019-11-07 00:52:47,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-07 00:52:47,183 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 191 [2019-11-07 00:52:47,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:47,194 INFO L225 Difference]: With dead ends: 2166 [2019-11-07 00:52:47,194 INFO L226 Difference]: Without dead ends: 1569 [2019-11-07 00:52:47,198 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:52:47,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2019-11-07 00:52:47,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1567. [2019-11-07 00:52:47,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2019-11-07 00:52:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2316 transitions. [2019-11-07 00:52:47,313 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2316 transitions. Word has length 191 [2019-11-07 00:52:47,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:47,314 INFO L462 AbstractCegarLoop]: Abstraction has 1567 states and 2316 transitions. [2019-11-07 00:52:47,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-07 00:52:47,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2316 transitions. [2019-11-07 00:52:47,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-11-07 00:52:47,321 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:47,321 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:47,321 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:47,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:47,322 INFO L82 PathProgramCache]: Analyzing trace with hash 774123990, now seen corresponding path program 1 times [2019-11-07 00:52:47,322 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:47,322 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776910998] [2019-11-07 00:52:47,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:47,497 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776910998] [2019-11-07 00:52:47,497 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:47,497 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:52:47,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474063289] [2019-11-07 00:52:47,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:52:47,498 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:47,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:52:47,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:52:47,499 INFO L87 Difference]: Start difference. First operand 1567 states and 2316 transitions. Second operand 8 states. [2019-11-07 00:52:48,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:48,649 INFO L93 Difference]: Finished difference Result 2816 states and 3991 transitions. [2019-11-07 00:52:48,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:52:48,650 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 200 [2019-11-07 00:52:48,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:48,663 INFO L225 Difference]: With dead ends: 2816 [2019-11-07 00:52:48,664 INFO L226 Difference]: Without dead ends: 2311 [2019-11-07 00:52:48,666 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:52:48,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2019-11-07 00:52:48,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2292. [2019-11-07 00:52:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2292 states. [2019-11-07 00:52:48,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3294 transitions. [2019-11-07 00:52:48,761 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3294 transitions. Word has length 200 [2019-11-07 00:52:48,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:48,762 INFO L462 AbstractCegarLoop]: Abstraction has 2292 states and 3294 transitions. [2019-11-07 00:52:48,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:52:48,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3294 transitions. [2019-11-07 00:52:48,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-11-07 00:52:48,770 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:48,770 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:48,770 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:48,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:48,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1629602409, now seen corresponding path program 1 times [2019-11-07 00:52:48,771 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:48,771 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077201106] [2019-11-07 00:52:48,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:49,209 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077201106] [2019-11-07 00:52:49,209 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:49,209 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-11-07 00:52:49,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402731243] [2019-11-07 00:52:49,210 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-07 00:52:49,210 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:49,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-07 00:52:49,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:52:49,211 INFO L87 Difference]: Start difference. First operand 2292 states and 3294 transitions. Second operand 19 states. [2019-11-07 00:52:50,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:50,252 INFO L93 Difference]: Finished difference Result 2981 states and 4218 transitions. [2019-11-07 00:52:50,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-07 00:52:50,253 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 201 [2019-11-07 00:52:50,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:50,269 INFO L225 Difference]: With dead ends: 2981 [2019-11-07 00:52:50,269 INFO L226 Difference]: Without dead ends: 2291 [2019-11-07 00:52:50,280 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:52:50,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2019-11-07 00:52:50,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2290. [2019-11-07 00:52:50,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2290 states. [2019-11-07 00:52:50,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 3289 transitions. [2019-11-07 00:52:50,395 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 3289 transitions. Word has length 201 [2019-11-07 00:52:50,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:50,397 INFO L462 AbstractCegarLoop]: Abstraction has 2290 states and 3289 transitions. [2019-11-07 00:52:50,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-07 00:52:50,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 3289 transitions. [2019-11-07 00:52:50,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-11-07 00:52:50,411 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:50,412 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:50,412 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:50,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:50,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1161770309, now seen corresponding path program 2 times [2019-11-07 00:52:50,413 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:50,413 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845412148] [2019-11-07 00:52:50,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:50,747 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:50,748 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845412148] [2019-11-07 00:52:50,748 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407380380] [2019-11-07 00:52:50,748 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:51,343 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:52:51,343 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:52:51,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 2228 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-07 00:52:51,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:51,623 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:52:51,624 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:52,150 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:52:52,151 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:52,151 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-11-07 00:52:52,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138361977] [2019-11-07 00:52:52,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:52:52,152 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:52,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:52:52,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:52:52,153 INFO L87 Difference]: Start difference. First operand 2290 states and 3289 transitions. Second operand 14 states. [2019-11-07 00:52:54,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:54,833 INFO L93 Difference]: Finished difference Result 6842 states and 9934 transitions. [2019-11-07 00:52:54,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:52:54,837 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 201 [2019-11-07 00:52:54,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:54,885 INFO L225 Difference]: With dead ends: 6842 [2019-11-07 00:52:54,886 INFO L226 Difference]: Without dead ends: 6839 [2019-11-07 00:52:54,891 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 396 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:52:54,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6839 states. [2019-11-07 00:52:55,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6839 to 5374. [2019-11-07 00:52:55,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5374 states. [2019-11-07 00:52:55,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5374 states to 5374 states and 7983 transitions. [2019-11-07 00:52:55,354 INFO L78 Accepts]: Start accepts. Automaton has 5374 states and 7983 transitions. Word has length 201 [2019-11-07 00:52:55,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:55,355 INFO L462 AbstractCegarLoop]: Abstraction has 5374 states and 7983 transitions. [2019-11-07 00:52:55,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:52:55,355 INFO L276 IsEmpty]: Start isEmpty. Operand 5374 states and 7983 transitions. [2019-11-07 00:52:55,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-11-07 00:52:55,386 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:55,387 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:55,595 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:55,595 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:55,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:55,596 INFO L82 PathProgramCache]: Analyzing trace with hash 155143872, now seen corresponding path program 1 times [2019-11-07 00:52:55,596 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:55,596 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073122883] [2019-11-07 00:52:55,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-11-07 00:52:55,876 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073122883] [2019-11-07 00:52:55,876 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472536806] [2019-11-07 00:52:55,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:56,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:52:56,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 00:52:56,672 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:57,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:52:57,135 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:57,230 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-07 00:52:57,400 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:52:57,401 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 9] total 24 [2019-11-07 00:52:57,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023247138] [2019-11-07 00:52:57,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:52:57,401 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:57,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:52:57,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2019-11-07 00:52:57,402 INFO L87 Difference]: Start difference. First operand 5374 states and 7983 transitions. Second operand 9 states. [2019-11-07 00:52:59,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:59,113 INFO L93 Difference]: Finished difference Result 10722 states and 15940 transitions. [2019-11-07 00:52:59,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:52:59,114 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 203 [2019-11-07 00:52:59,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:59,148 INFO L225 Difference]: With dead ends: 10722 [2019-11-07 00:52:59,148 INFO L226 Difference]: Without dead ends: 5392 [2019-11-07 00:52:59,169 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 390 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2019-11-07 00:52:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5392 states. [2019-11-07 00:52:59,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5392 to 5392. [2019-11-07 00:52:59,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5392 states. [2019-11-07 00:52:59,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 8004 transitions. [2019-11-07 00:52:59,421 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 8004 transitions. Word has length 203 [2019-11-07 00:52:59,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:59,422 INFO L462 AbstractCegarLoop]: Abstraction has 5392 states and 8004 transitions. [2019-11-07 00:52:59,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:52:59,422 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 8004 transitions. [2019-11-07 00:52:59,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-11-07 00:52:59,443 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:59,443 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:59,650 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:59,651 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:59,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:59,651 INFO L82 PathProgramCache]: Analyzing trace with hash -270148225, now seen corresponding path program 1 times [2019-11-07 00:52:59,651 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:59,651 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545235637] [2019-11-07 00:52:59,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:59,965 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-11-07 00:52:59,966 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545235637] [2019-11-07 00:52:59,966 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569407265] [2019-11-07 00:52:59,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:53:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:00,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 3009 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:53:00,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:53:00,678 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 00:53:00,679 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:53:00,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:53:00,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:53:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:53:01,046 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:53:01,046 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 7] total 20 [2019-11-07 00:53:01,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136807102] [2019-11-07 00:53:01,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:53:01,047 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:01,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:53:01,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:53:01,048 INFO L87 Difference]: Start difference. First operand 5392 states and 8004 transitions. Second operand 7 states. [2019-11-07 00:53:02,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:02,853 INFO L93 Difference]: Finished difference Result 10692 states and 15905 transitions. [2019-11-07 00:53:02,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:53:02,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2019-11-07 00:53:02,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:02,884 INFO L225 Difference]: With dead ends: 10692 [2019-11-07 00:53:02,885 INFO L226 Difference]: Without dead ends: 5392 [2019-11-07 00:53:02,904 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 397 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2019-11-07 00:53:02,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5392 states. [2019-11-07 00:53:03,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5392 to 5392. [2019-11-07 00:53:03,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5392 states. [2019-11-07 00:53:03,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 7982 transitions. [2019-11-07 00:53:03,133 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 7982 transitions. Word has length 204 [2019-11-07 00:53:03,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:03,133 INFO L462 AbstractCegarLoop]: Abstraction has 5392 states and 7982 transitions. [2019-11-07 00:53:03,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:53:03,133 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 7982 transitions. [2019-11-07 00:53:03,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-11-07 00:53:03,154 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:03,154 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:03,362 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:53:03,362 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:03,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:03,363 INFO L82 PathProgramCache]: Analyzing trace with hash 908813455, now seen corresponding path program 1 times [2019-11-07 00:53:03,363 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:03,363 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611315555] [2019-11-07 00:53:03,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:03,492 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:53:03,492 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611315555] [2019-11-07 00:53:03,492 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202391164] [2019-11-07 00:53:03,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:53:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:04,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 3004 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:53:04,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:53:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:53:04,234 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:53:04,449 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2019-11-07 00:53:04,755 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:53:04,825 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:53:04,909 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:53:04,909 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:53:04,910 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-11-07 00:53:04,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079873561] [2019-11-07 00:53:04,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:53:04,911 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:04,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:53:04,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:53:04,916 INFO L87 Difference]: Start difference. First operand 5392 states and 7982 transitions. Second operand 7 states. [2019-11-07 00:53:06,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:06,743 INFO L93 Difference]: Finished difference Result 9919 states and 14541 transitions. [2019-11-07 00:53:06,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:53:06,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2019-11-07 00:53:06,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:06,778 INFO L225 Difference]: With dead ends: 9919 [2019-11-07 00:53:06,778 INFO L226 Difference]: Without dead ends: 5404 [2019-11-07 00:53:06,793 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 399 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:53:06,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2019-11-07 00:53:07,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 5392. [2019-11-07 00:53:07,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5392 states. [2019-11-07 00:53:07,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 7980 transitions. [2019-11-07 00:53:07,031 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 7980 transitions. Word has length 205 [2019-11-07 00:53:07,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:07,031 INFO L462 AbstractCegarLoop]: Abstraction has 5392 states and 7980 transitions. [2019-11-07 00:53:07,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:53:07,031 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 7980 transitions. [2019-11-07 00:53:07,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-11-07 00:53:07,051 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:07,051 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:07,258 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:53:07,259 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:07,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:07,259 INFO L82 PathProgramCache]: Analyzing trace with hash 2129566039, now seen corresponding path program 1 times [2019-11-07 00:53:07,259 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:07,259 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507096702] [2019-11-07 00:53:07,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:53:07,396 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507096702] [2019-11-07 00:53:07,397 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172439458] [2019-11-07 00:53:07,397 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