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_spec8_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:18:38,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:18:38,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:18:38,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:18:38,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:18:38,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:18:38,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:18:38,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:18:38,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:18:38,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:18:38,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:18:38,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:18:38,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:18:38,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:18:38,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:18:38,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:18:38,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:18:38,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:18:38,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:18:38,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:18:38,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:18:38,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:18:38,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:18:38,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:18:38,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:18:38,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:18:38,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:18:38,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:18:38,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:18:38,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:18:38,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:18:38,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:18:38,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:18:38,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:18:38,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:18:38,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:18:38,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:18:38,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:18:38,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:18:38,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:18:38,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:18:38,562 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:18:38,576 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:18:38,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:18:38,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:18:38,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:18:38,577 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:18:38,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:18:38,578 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:18:38,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:18:38,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:18:38,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:18:38,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:18:38,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:18:38,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:18:38,579 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:18:38,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:18:38,580 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:18:38,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:18:38,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:18:38,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:18:38,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:18:38,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:18:38,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:38,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:18:38,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:18:38,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:18:38,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:18:38,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:18:38,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:18:38,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:18:38,898 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:18:38,922 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:18:38,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:18:38,927 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:18:38,928 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:18:38,928 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product35.cil.c [2019-10-13 21:18:39,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a4addaa4/8e24ad84b43b4512af21e636dbded9ec/FLAG975aaa337 [2019-10-13 21:18:39,717 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:18:39,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product35.cil.c [2019-10-13 21:18:39,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a4addaa4/8e24ad84b43b4512af21e636dbded9ec/FLAG975aaa337 [2019-10-13 21:18:39,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a4addaa4/8e24ad84b43b4512af21e636dbded9ec [2019-10-13 21:18:39,876 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:18:39,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:18:39,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:39,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:18:39,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:18:39,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:39" (1/1) ... [2019-10-13 21:18:39,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112cb494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:39, skipping insertion in model container [2019-10-13 21:18:39,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:39" (1/1) ... [2019-10-13 21:18:39,891 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:18:39,966 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:18:40,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:40,796 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:18:40,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:41,007 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:18:41,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:41 WrapperNode [2019-10-13 21:18:41,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:41,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:18:41,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:18:41,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:18:41,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:41" (1/1) ... [2019-10-13 21:18:41,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:41" (1/1) ... [2019-10-13 21:18:41,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:41" (1/1) ... [2019-10-13 21:18:41,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:41" (1/1) ... [2019-10-13 21:18:41,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:41" (1/1) ... [2019-10-13 21:18:41,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:41" (1/1) ... [2019-10-13 21:18:41,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:41" (1/1) ... [2019-10-13 21:18:41,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:18:41,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:18:41,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:18:41,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:18:41,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:41,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:18:41,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:18:41,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:41,354 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:18:41,354 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:18:41,354 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:18:41,354 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:18:41,355 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:18:41,355 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:18:41,355 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:18:41,355 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:18:41,355 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:18:41,356 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:18:41,356 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:18:41,356 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:18:41,356 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:18:41,356 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:18:41,357 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:18:41,357 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:18:41,357 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:18:41,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:18:41,358 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:18:41,358 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:18:41,358 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:18:41,359 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:18:41,359 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:18:41,359 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:18:41,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:41,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:41,359 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:18:41,360 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:18:41,360 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:41,360 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:18:41,360 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:41,360 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:18:41,360 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:18:41,361 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:18:41,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:18:41,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:18:41,361 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:18:41,361 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:18:41,361 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:18:41,361 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:18:41,362 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:18:41,362 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:18:41,362 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:18:41,362 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:18:41,362 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:18:41,362 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:18:41,362 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:18:41,363 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:18:41,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:18:41,363 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:18:41,363 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:18:41,363 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:18:41,363 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:18:41,363 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:18:41,364 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:18:41,364 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:18:41,364 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:18:41,364 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:18:41,364 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:18:41,364 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:18:41,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:18:41,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:18:41,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:18:41,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:18:41,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:18:41,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:18:41,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:18:41,366 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:18:41,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:18:41,366 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:18:41,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:18:41,366 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:18:41,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:18:41,367 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:18:41,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:41,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:41,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:41,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:18:41,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:18:41,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:18:41,368 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:18:41,368 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:18:41,368 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:18:41,368 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:18:41,368 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:18:41,369 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:18:41,369 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:18:41,369 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:18:41,369 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:18:41,369 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:18:41,369 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:18:41,370 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:18:41,370 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:18:41,370 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:18:41,370 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:18:41,370 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:18:41,370 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:18:41,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:18:41,371 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:18:41,371 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:18:41,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:18:41,371 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:18:41,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:18:41,372 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:18:41,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:18:41,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:18:41,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:18:41,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:18:41,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:18:41,372 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:18:41,372 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:18:41,373 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:18:41,373 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:18:41,373 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:18:41,373 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:18:41,373 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:18:41,373 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:18:41,373 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:18:41,374 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:18:41,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:18:41,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:18:41,374 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:18:41,374 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:18:41,374 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:18:41,375 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:18:41,375 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:18:41,375 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:18:41,375 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:18:41,375 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:18:41,375 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:18:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:18:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:18:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:18:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:18:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:18:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:18:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:18:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:18:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:18:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:18:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:18:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:18:41,378 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:18:41,378 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:18:41,378 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:18:41,378 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:18:41,378 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:18:41,378 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:18:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:18:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:18:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:18:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:18:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:18:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:18:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:18:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:18:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:18:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:18:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:18:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:18:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:18:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:18:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:18:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:18:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:18:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:18:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:18:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:18:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:18:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:18:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:18:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:18:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:18:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:18:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:18:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:18:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:18:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:18:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:18:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:18:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:18:41,384 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:18:41,384 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:18:41,384 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:18:41,384 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:18:41,384 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:18:41,385 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:18:41,385 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:18:41,385 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:18:41,385 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:18:41,385 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:18:41,385 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:18:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:18:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:18:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:18:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:18:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:18:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:18:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:18:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:18:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:18:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:18:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:18:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:18:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:18:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:18:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:18:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:18:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:18:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:18:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:18:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:18:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:18:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:18:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:18:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:18:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:18:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:18:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:18:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:18:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:18:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:18:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:18:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:18:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:18:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:18:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:18:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:18:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:18:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:18:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:18:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:18:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:18:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:18:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:18:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:18:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:18:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:18:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:18:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:18:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:18:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:18:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:18:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:18:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:18:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:18:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:18:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:18:44,107 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:18:44,108 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:18:44,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:44 BoogieIcfgContainer [2019-10-13 21:18:44,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:18:44,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:18:44,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:18:44,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:18:44,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:18:39" (1/3) ... [2019-10-13 21:18:44,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153a797b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:44, skipping insertion in model container [2019-10-13 21:18:44,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:41" (2/3) ... [2019-10-13 21:18:44,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153a797b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:44, skipping insertion in model container [2019-10-13 21:18:44,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:44" (3/3) ... [2019-10-13 21:18:44,123 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product35.cil.c [2019-10-13 21:18:44,141 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:18:44,155 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:18:44,168 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:18:44,220 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:18:44,220 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:18:44,220 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:18:44,221 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:18:44,221 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:18:44,221 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:18:44,221 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:18:44,221 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:18:44,270 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states. [2019-10-13 21:18:44,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-13 21:18:44,305 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:44,307 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:44,309 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:44,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:44,317 INFO L82 PathProgramCache]: Analyzing trace with hash -2049044822, now seen corresponding path program 1 times [2019-10-13 21:18:44,331 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:44,332 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891125547] [2019-10-13 21:18:44,332 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:44,332 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:44,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:45,064 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:45,065 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891125547] [2019-10-13 21:18:45,065 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:45,066 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:18:45,066 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891087865] [2019-10-13 21:18:45,071 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:18:45,073 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:45,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:18:45,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:45,090 INFO L87 Difference]: Start difference. First operand 687 states. Second operand 2 states. [2019-10-13 21:18:45,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:45,174 INFO L93 Difference]: Finished difference Result 1049 states and 1409 transitions. [2019-10-13 21:18:45,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:18:45,176 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 167 [2019-10-13 21:18:45,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:45,202 INFO L225 Difference]: With dead ends: 1049 [2019-10-13 21:18:45,202 INFO L226 Difference]: Without dead ends: 658 [2019-10-13 21:18:45,211 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:45,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2019-10-13 21:18:45,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2019-10-13 21:18:45,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2019-10-13 21:18:45,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 890 transitions. [2019-10-13 21:18:45,341 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 890 transitions. Word has length 167 [2019-10-13 21:18:45,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:45,344 INFO L462 AbstractCegarLoop]: Abstraction has 658 states and 890 transitions. [2019-10-13 21:18:45,344 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:18:45,344 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 890 transitions. [2019-10-13 21:18:45,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-13 21:18:45,357 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:45,357 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:45,358 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:45,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:45,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1717757499, now seen corresponding path program 1 times [2019-10-13 21:18:45,359 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:45,360 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816907411] [2019-10-13 21:18:45,360 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:45,360 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:45,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:45,684 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:45,685 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816907411] [2019-10-13 21:18:45,685 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:45,685 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:45,685 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570058156] [2019-10-13 21:18:45,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:45,688 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:45,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:45,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:45,689 INFO L87 Difference]: Start difference. First operand 658 states and 890 transitions. Second operand 3 states. [2019-10-13 21:18:45,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:45,756 INFO L93 Difference]: Finished difference Result 1032 states and 1374 transitions. [2019-10-13 21:18:45,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:45,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-10-13 21:18:45,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:45,769 INFO L225 Difference]: With dead ends: 1032 [2019-10-13 21:18:45,770 INFO L226 Difference]: Without dead ends: 661 [2019-10-13 21:18:45,776 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:45,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2019-10-13 21:18:45,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 660. [2019-10-13 21:18:45,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2019-10-13 21:18:45,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 892 transitions. [2019-10-13 21:18:45,821 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 892 transitions. Word has length 168 [2019-10-13 21:18:45,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:45,822 INFO L462 AbstractCegarLoop]: Abstraction has 660 states and 892 transitions. [2019-10-13 21:18:45,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:45,823 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 892 transitions. [2019-10-13 21:18:45,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-13 21:18:45,827 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:45,827 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:45,827 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:45,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:45,828 INFO L82 PathProgramCache]: Analyzing trace with hash 2093739956, now seen corresponding path program 1 times [2019-10-13 21:18:45,828 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:45,829 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138887724] [2019-10-13 21:18:45,829 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:45,829 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:45,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:46,026 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138887724] [2019-10-13 21:18:46,026 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:46,027 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:46,027 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14105405] [2019-10-13 21:18:46,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:46,032 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:46,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:46,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:46,033 INFO L87 Difference]: Start difference. First operand 660 states and 892 transitions. Second operand 3 states. [2019-10-13 21:18:46,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:46,079 INFO L93 Difference]: Finished difference Result 1300 states and 1788 transitions. [2019-10-13 21:18:46,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:46,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2019-10-13 21:18:46,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:46,085 INFO L225 Difference]: With dead ends: 1300 [2019-10-13 21:18:46,085 INFO L226 Difference]: Without dead ends: 705 [2019-10-13 21:18:46,088 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:46,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2019-10-13 21:18:46,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 704. [2019-10-13 21:18:46,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2019-10-13 21:18:46,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 967 transitions. [2019-10-13 21:18:46,116 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 967 transitions. Word has length 180 [2019-10-13 21:18:46,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:46,116 INFO L462 AbstractCegarLoop]: Abstraction has 704 states and 967 transitions. [2019-10-13 21:18:46,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:46,117 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 967 transitions. [2019-10-13 21:18:46,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-13 21:18:46,121 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:46,121 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:46,122 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:46,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:46,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1917860483, now seen corresponding path program 1 times [2019-10-13 21:18:46,122 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:46,123 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970500563] [2019-10-13 21:18:46,123 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:46,123 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:46,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:46,425 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970500563] [2019-10-13 21:18:46,425 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:46,426 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:46,426 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379858681] [2019-10-13 21:18:46,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:46,427 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:46,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:46,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:46,428 INFO L87 Difference]: Start difference. First operand 704 states and 967 transitions. Second operand 3 states. [2019-10-13 21:18:46,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:46,489 INFO L93 Difference]: Finished difference Result 1429 states and 2008 transitions. [2019-10-13 21:18:46,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:46,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2019-10-13 21:18:46,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:46,499 INFO L225 Difference]: With dead ends: 1429 [2019-10-13 21:18:46,499 INFO L226 Difference]: Without dead ends: 790 [2019-10-13 21:18:46,503 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:46,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2019-10-13 21:18:46,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 789. [2019-10-13 21:18:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2019-10-13 21:18:46,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1111 transitions. [2019-10-13 21:18:46,555 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1111 transitions. Word has length 181 [2019-10-13 21:18:46,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:46,556 INFO L462 AbstractCegarLoop]: Abstraction has 789 states and 1111 transitions. [2019-10-13 21:18:46,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:46,556 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1111 transitions. [2019-10-13 21:18:46,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-13 21:18:46,565 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:46,565 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:46,565 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:46,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:46,566 INFO L82 PathProgramCache]: Analyzing trace with hash 556295988, now seen corresponding path program 1 times [2019-10-13 21:18:46,566 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:46,567 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59170308] [2019-10-13 21:18:46,568 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:46,568 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:46,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:46,809 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:46,809 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59170308] [2019-10-13 21:18:46,810 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:46,810 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:46,810 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132618076] [2019-10-13 21:18:46,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:46,811 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:46,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:46,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:46,812 INFO L87 Difference]: Start difference. First operand 789 states and 1111 transitions. Second operand 3 states. [2019-10-13 21:18:46,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:46,863 INFO L93 Difference]: Finished difference Result 1678 states and 2430 transitions. [2019-10-13 21:18:46,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:46,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2019-10-13 21:18:46,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:46,870 INFO L225 Difference]: With dead ends: 1678 [2019-10-13 21:18:46,871 INFO L226 Difference]: Without dead ends: 954 [2019-10-13 21:18:46,873 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:46,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2019-10-13 21:18:46,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 953. [2019-10-13 21:18:46,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2019-10-13 21:18:46,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1387 transitions. [2019-10-13 21:18:46,933 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1387 transitions. Word has length 182 [2019-10-13 21:18:46,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:46,933 INFO L462 AbstractCegarLoop]: Abstraction has 953 states and 1387 transitions. [2019-10-13 21:18:46,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:46,934 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1387 transitions. [2019-10-13 21:18:46,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-13 21:18:46,938 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:46,939 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:46,939 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:46,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:46,939 INFO L82 PathProgramCache]: Analyzing trace with hash -398508003, now seen corresponding path program 1 times [2019-10-13 21:18:46,940 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:46,940 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374502235] [2019-10-13 21:18:46,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:46,941 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:46,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:47,220 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:18:47,220 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374502235] [2019-10-13 21:18:47,222 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:47,222 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:47,222 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58163393] [2019-10-13 21:18:47,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:47,223 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:47,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:47,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:47,224 INFO L87 Difference]: Start difference. First operand 953 states and 1387 transitions. Second operand 3 states. [2019-10-13 21:18:47,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:47,279 INFO L93 Difference]: Finished difference Result 1452 states and 2059 transitions. [2019-10-13 21:18:47,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:47,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2019-10-13 21:18:47,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:47,286 INFO L225 Difference]: With dead ends: 1452 [2019-10-13 21:18:47,286 INFO L226 Difference]: Without dead ends: 1094 [2019-10-13 21:18:47,289 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:47,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2019-10-13 21:18:47,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1093. [2019-10-13 21:18:47,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1093 states. [2019-10-13 21:18:47,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1584 transitions. [2019-10-13 21:18:47,335 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1584 transitions. Word has length 184 [2019-10-13 21:18:47,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:47,336 INFO L462 AbstractCegarLoop]: Abstraction has 1093 states and 1584 transitions. [2019-10-13 21:18:47,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:47,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1584 transitions. [2019-10-13 21:18:47,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2019-10-13 21:18:47,345 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:47,345 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:47,346 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:47,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:47,346 INFO L82 PathProgramCache]: Analyzing trace with hash -167553219, now seen corresponding path program 1 times [2019-10-13 21:18:47,347 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:47,347 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533569869] [2019-10-13 21:18:47,347 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:47,347 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:47,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:47,726 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-10-13 21:18:47,726 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533569869] [2019-10-13 21:18:47,726 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:47,727 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:18:47,727 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708939619] [2019-10-13 21:18:47,728 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:18:47,728 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:47,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:18:47,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:18:47,729 INFO L87 Difference]: Start difference. First operand 1093 states and 1584 transitions. Second operand 6 states. [2019-10-13 21:18:48,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:48,764 INFO L93 Difference]: Finished difference Result 2597 states and 3733 transitions. [2019-10-13 21:18:48,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:18:48,765 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 340 [2019-10-13 21:18:48,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:48,781 INFO L225 Difference]: With dead ends: 2597 [2019-10-13 21:18:48,781 INFO L226 Difference]: Without dead ends: 2137 [2019-10-13 21:18:48,784 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:18:48,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2019-10-13 21:18:48,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2126. [2019-10-13 21:18:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2126 states. [2019-10-13 21:18:48,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 3110 transitions. [2019-10-13 21:18:48,887 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 3110 transitions. Word has length 340 [2019-10-13 21:18:48,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:48,888 INFO L462 AbstractCegarLoop]: Abstraction has 2126 states and 3110 transitions. [2019-10-13 21:18:48,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:18:48,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 3110 transitions. [2019-10-13 21:18:48,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2019-10-13 21:18:48,901 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:48,901 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:48,902 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:48,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:48,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1752113541, now seen corresponding path program 1 times [2019-10-13 21:18:48,903 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:48,903 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589007777] [2019-10-13 21:18:48,903 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:48,903 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:48,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:49,277 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-10-13 21:18:49,277 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589007777] [2019-10-13 21:18:49,277 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:49,278 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:18:49,278 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796768597] [2019-10-13 21:18:49,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:18:49,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:49,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:18:49,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:18:49,280 INFO L87 Difference]: Start difference. First operand 2126 states and 3110 transitions. Second operand 11 states. [2019-10-13 21:18:49,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:49,805 INFO L93 Difference]: Finished difference Result 3043 states and 4319 transitions. [2019-10-13 21:18:49,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:18:49,806 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 341 [2019-10-13 21:18:49,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:49,819 INFO L225 Difference]: With dead ends: 3043 [2019-10-13 21:18:49,819 INFO L226 Difference]: Without dead ends: 2100 [2019-10-13 21:18:49,823 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:18:49,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2019-10-13 21:18:49,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2096. [2019-10-13 21:18:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2019-10-13 21:18:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 3059 transitions. [2019-10-13 21:18:49,927 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 3059 transitions. Word has length 341 [2019-10-13 21:18:49,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:49,928 INFO L462 AbstractCegarLoop]: Abstraction has 2096 states and 3059 transitions. [2019-10-13 21:18:49,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:18:49,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 3059 transitions. [2019-10-13 21:18:49,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2019-10-13 21:18:49,943 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:49,944 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:49,944 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:49,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:49,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1458259163, now seen corresponding path program 1 times [2019-10-13 21:18:49,945 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:49,945 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535739897] [2019-10-13 21:18:49,945 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:49,945 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:49,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2019-10-13 21:18:50,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535739897] [2019-10-13 21:18:50,333 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:50,333 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:50,334 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044667000] [2019-10-13 21:18:50,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:50,336 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:50,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:50,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:50,336 INFO L87 Difference]: Start difference. First operand 2096 states and 3059 transitions. Second operand 3 states. [2019-10-13 21:18:50,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:50,448 INFO L93 Difference]: Finished difference Result 4761 states and 7127 transitions. [2019-10-13 21:18:50,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:50,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 366 [2019-10-13 21:18:50,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:50,473 INFO L225 Difference]: With dead ends: 4761 [2019-10-13 21:18:50,473 INFO L226 Difference]: Without dead ends: 2730 [2019-10-13 21:18:50,483 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:50,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2019-10-13 21:18:50,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2728. [2019-10-13 21:18:50,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2728 states. [2019-10-13 21:18:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2728 states to 2728 states and 4123 transitions. [2019-10-13 21:18:50,629 INFO L78 Accepts]: Start accepts. Automaton has 2728 states and 4123 transitions. Word has length 366 [2019-10-13 21:18:50,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:50,629 INFO L462 AbstractCegarLoop]: Abstraction has 2728 states and 4123 transitions. [2019-10-13 21:18:50,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:50,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2728 states and 4123 transitions. [2019-10-13 21:18:50,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2019-10-13 21:18:50,661 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:50,661 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:50,661 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:50,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:50,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1614984816, now seen corresponding path program 1 times [2019-10-13 21:18:50,662 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:50,662 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094374517] [2019-10-13 21:18:50,663 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:50,663 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:50,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-10-13 21:18:51,023 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094374517] [2019-10-13 21:18:51,023 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:51,023 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:51,023 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484662338] [2019-10-13 21:18:51,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:51,024 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:51,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:51,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:51,025 INFO L87 Difference]: Start difference. First operand 2728 states and 4123 transitions. Second operand 3 states. [2019-10-13 21:18:51,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:51,173 INFO L93 Difference]: Finished difference Result 6609 states and 10239 transitions. [2019-10-13 21:18:51,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:51,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 384 [2019-10-13 21:18:51,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:51,201 INFO L225 Difference]: With dead ends: 6609 [2019-10-13 21:18:51,202 INFO L226 Difference]: Without dead ends: 3946 [2019-10-13 21:18:51,214 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:51,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2019-10-13 21:18:51,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3944. [2019-10-13 21:18:51,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3944 states. [2019-10-13 21:18:51,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3944 states to 3944 states and 6155 transitions. [2019-10-13 21:18:51,419 INFO L78 Accepts]: Start accepts. Automaton has 3944 states and 6155 transitions. Word has length 384 [2019-10-13 21:18:51,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:51,419 INFO L462 AbstractCegarLoop]: Abstraction has 3944 states and 6155 transitions. [2019-10-13 21:18:51,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:51,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3944 states and 6155 transitions. [2019-10-13 21:18:51,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2019-10-13 21:18:51,450 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:51,450 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:51,451 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:51,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:51,451 INFO L82 PathProgramCache]: Analyzing trace with hash 295157851, now seen corresponding path program 1 times [2019-10-13 21:18:51,452 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:51,452 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443815912] [2019-10-13 21:18:51,452 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:51,453 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:51,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2019-10-13 21:18:51,688 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443815912] [2019-10-13 21:18:51,689 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:51,689 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:51,689 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940988327] [2019-10-13 21:18:51,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:51,690 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:51,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:51,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:51,691 INFO L87 Difference]: Start difference. First operand 3944 states and 6155 transitions. Second operand 3 states. [2019-10-13 21:18:52,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:52,038 INFO L93 Difference]: Finished difference Result 10161 states and 16175 transitions. [2019-10-13 21:18:52,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:52,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 368 [2019-10-13 21:18:52,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:52,079 INFO L225 Difference]: With dead ends: 10161 [2019-10-13 21:18:52,079 INFO L226 Difference]: Without dead ends: 6282 [2019-10-13 21:18:52,094 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:52,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2019-10-13 21:18:52,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 6280. [2019-10-13 21:18:52,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6280 states. [2019-10-13 21:18:52,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6280 states to 6280 states and 10027 transitions. [2019-10-13 21:18:52,404 INFO L78 Accepts]: Start accepts. Automaton has 6280 states and 10027 transitions. Word has length 368 [2019-10-13 21:18:52,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:52,405 INFO L462 AbstractCegarLoop]: Abstraction has 6280 states and 10027 transitions. [2019-10-13 21:18:52,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:52,405 INFO L276 IsEmpty]: Start isEmpty. Operand 6280 states and 10027 transitions. [2019-10-13 21:18:52,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2019-10-13 21:18:52,445 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:52,446 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:52,446 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:52,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:52,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1948561648, now seen corresponding path program 1 times [2019-10-13 21:18:52,447 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:52,447 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263393604] [2019-10-13 21:18:52,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:52,448 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:52,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-10-13 21:18:52,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263393604] [2019-10-13 21:18:52,702 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:52,703 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:52,703 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458297140] [2019-10-13 21:18:52,704 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:52,704 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:52,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:52,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:52,705 INFO L87 Difference]: Start difference. First operand 6280 states and 10027 transitions. Second operand 3 states. [2019-10-13 21:18:53,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:53,089 INFO L93 Difference]: Finished difference Result 16977 states and 27471 transitions. [2019-10-13 21:18:53,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:53,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 386 [2019-10-13 21:18:53,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:53,148 INFO L225 Difference]: With dead ends: 16977 [2019-10-13 21:18:53,149 INFO L226 Difference]: Without dead ends: 10762 [2019-10-13 21:18:53,175 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:53,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10762 states. [2019-10-13 21:18:53,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10762 to 10760. [2019-10-13 21:18:53,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10760 states. [2019-10-13 21:18:53,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10760 states to 10760 states and 17387 transitions. [2019-10-13 21:18:53,667 INFO L78 Accepts]: Start accepts. Automaton has 10760 states and 17387 transitions. Word has length 386 [2019-10-13 21:18:53,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:53,668 INFO L462 AbstractCegarLoop]: Abstraction has 10760 states and 17387 transitions. [2019-10-13 21:18:53,668 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:53,668 INFO L276 IsEmpty]: Start isEmpty. Operand 10760 states and 17387 transitions. [2019-10-13 21:18:53,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2019-10-13 21:18:53,737 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:53,738 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:53,738 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:53,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:53,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1047746023, now seen corresponding path program 1 times [2019-10-13 21:18:53,739 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:53,739 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936684917] [2019-10-13 21:18:53,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:53,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:53,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 21:18:54,284 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936684917] [2019-10-13 21:18:54,284 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002880679] [2019-10-13 21:18:54,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:55,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 3986 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:55,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-13 21:18:56,081 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:56,944 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:57,035 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:57,129 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:57,340 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:18:57,340 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:18:57,341 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-13 21:18:57,341 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002829044] [2019-10-13 21:18:57,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:18:57,345 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:57,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:18:57,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:57,346 INFO L87 Difference]: Start difference. First operand 10760 states and 17387 transitions. Second operand 9 states. [2019-10-13 21:18:59,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:59,313 INFO L93 Difference]: Finished difference Result 21498 states and 34754 transitions. [2019-10-13 21:18:59,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:18:59,314 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 349 [2019-10-13 21:18:59,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:59,362 INFO L225 Difference]: With dead ends: 21498 [2019-10-13 21:18:59,362 INFO L226 Difference]: Without dead ends: 10774 [2019-10-13 21:18:59,402 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 687 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:18:59,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10774 states. [2019-10-13 21:19:00,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10774 to 10774. [2019-10-13 21:19:00,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10774 states. [2019-10-13 21:19:00,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10774 states to 10774 states and 17405 transitions. [2019-10-13 21:19:00,138 INFO L78 Accepts]: Start accepts. Automaton has 10774 states and 17405 transitions. Word has length 349 [2019-10-13 21:19:00,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:00,139 INFO L462 AbstractCegarLoop]: Abstraction has 10774 states and 17405 transitions. [2019-10-13 21:19:00,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:19:00,139 INFO L276 IsEmpty]: Start isEmpty. Operand 10774 states and 17405 transitions. [2019-10-13 21:19:00,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2019-10-13 21:19:00,203 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:00,204 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:00,540 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:00,541 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:00,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:00,542 INFO L82 PathProgramCache]: Analyzing trace with hash -483255879, now seen corresponding path program 1 times [2019-10-13 21:19:00,542 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:00,542 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382770021] [2019-10-13 21:19:00,542 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:00,542 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:00,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:01,273 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 21:19:01,274 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382770021] [2019-10-13 21:19:01,274 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101644001] [2019-10-13 21:19:01,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:02,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 3987 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:02,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:02,250 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-13 21:19:02,250 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:03,015 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:03,083 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:19:03,169 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:03,169 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-13 21:19:03,169 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688154087] [2019-10-13 21:19:03,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:19:03,170 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:03,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:19:03,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:03,171 INFO L87 Difference]: Start difference. First operand 10774 states and 17405 transitions. Second operand 7 states. [2019-10-13 21:19:05,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:05,020 INFO L93 Difference]: Finished difference Result 21501 states and 34887 transitions. [2019-10-13 21:19:05,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:19:05,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2019-10-13 21:19:05,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:05,069 INFO L225 Difference]: With dead ends: 21501 [2019-10-13 21:19:05,069 INFO L226 Difference]: Without dead ends: 10778 [2019-10-13 21:19:05,109 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 694 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:19:05,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10778 states. [2019-10-13 21:19:05,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10778 to 10778. [2019-10-13 21:19:05,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10778 states. [2019-10-13 21:19:05,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10778 states to 10778 states and 17410 transitions. [2019-10-13 21:19:05,594 INFO L78 Accepts]: Start accepts. Automaton has 10778 states and 17410 transitions. Word has length 350 [2019-10-13 21:19:05,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:05,595 INFO L462 AbstractCegarLoop]: Abstraction has 10778 states and 17410 transitions. [2019-10-13 21:19:05,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:19:05,595 INFO L276 IsEmpty]: Start isEmpty. Operand 10778 states and 17410 transitions. [2019-10-13 21:19:05,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2019-10-13 21:19:05,656 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:05,657 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:05,869 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:05,870 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:05,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:05,871 INFO L82 PathProgramCache]: Analyzing trace with hash 402233978, now seen corresponding path program 1 times [2019-10-13 21:19:05,872 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:05,872 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986649342] [2019-10-13 21:19:05,873 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:05,873 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:05,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 21:19:06,684 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986649342] [2019-10-13 21:19:06,685 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565191661] [2019-10-13 21:19:06,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:07,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 3988 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:07,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-13 21:19:07,753 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:08,468 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:08,560 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:08,644 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:19:08,810 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:08,810 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-13 21:19:08,810 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817233305] [2019-10-13 21:19:08,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:19:08,812 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:08,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:19:08,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:19:08,813 INFO L87 Difference]: Start difference. First operand 10778 states and 17410 transitions. Second operand 16 states.