java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:14:44,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:14:44,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:14:44,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:14:44,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:14:44,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:14:44,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:14:44,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:14:44,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:14:44,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:14:44,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:14:44,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:14:44,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:14:44,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:14:44,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:14:44,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:14:44,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:14:44,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:14:44,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:14:44,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:14:44,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:14:44,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:14:44,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:14:44,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:14:44,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:14:44,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:14:44,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:14:44,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:14:44,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:14:44,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:14:44,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:14:44,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:14:44,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:14:44,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:14:44,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:14:44,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:14:44,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:14:44,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:14:44,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:14:44,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:14:44,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:14:44,342 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 21:14:44,359 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:14:44,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:14:44,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:14:44,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:14:44,362 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:14:44,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:14:44,363 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:14:44,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:14:44,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:14:44,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:14:44,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:14:44,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:14:44,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:14:44,365 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:14:44,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:14:44,365 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:14:44,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:14:44,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:14:44,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:14:44,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:14:44,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:14:44,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:44,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:14:44,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:14:44,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:14:44,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:14:44,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:14:44,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:14:44,368 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 21:14:44,636 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:14:44,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:14:44,652 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:14:44,654 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:14:44,654 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:14:44,655 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product23.cil.c [2019-10-13 21:14:44,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a261c612/d679eb6c45374fac9fcb2264be38862a/FLAG3b8a2e851 [2019-10-13 21:14:45,336 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:14:45,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product23.cil.c [2019-10-13 21:14:45,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a261c612/d679eb6c45374fac9fcb2264be38862a/FLAG3b8a2e851 [2019-10-13 21:14:45,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a261c612/d679eb6c45374fac9fcb2264be38862a [2019-10-13 21:14:45,556 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:14:45,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:14:45,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:45,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:14:45,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:14:45,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:45" (1/1) ... [2019-10-13 21:14:45,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b276bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:45, skipping insertion in model container [2019-10-13 21:14:45,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:45" (1/1) ... [2019-10-13 21:14:45,572 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:14:45,646 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:14:46,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:46,383 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:14:46,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:46,575 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:14:46,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:46 WrapperNode [2019-10-13 21:14:46,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:46,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:14:46,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:14:46,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:14:46,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:46" (1/1) ... [2019-10-13 21:14:46,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:46" (1/1) ... [2019-10-13 21:14:46,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:46" (1/1) ... [2019-10-13 21:14:46,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:46" (1/1) ... [2019-10-13 21:14:46,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:46" (1/1) ... [2019-10-13 21:14:46,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:46" (1/1) ... [2019-10-13 21:14:46,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:46" (1/1) ... [2019-10-13 21:14:46,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:14:46,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:14:46,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:14:46,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:14:46,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:46" (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 21:14:46,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:14:46,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:14:46,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:46,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:14:46,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:14:46,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:46,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:14:46,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:46,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:14:46,832 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:14:46,833 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:14:46,833 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:14:46,833 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:14:46,834 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:14:46,834 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:14:46,834 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:14:46,834 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:14:46,834 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:14:46,835 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:14:46,835 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:14:46,835 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:14:46,835 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:14:46,835 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:14:46,836 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:14:46,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:14:46,836 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:14:46,836 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:14:46,837 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:14:46,837 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:14:46,837 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:14:46,837 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:14:46,837 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:14:46,838 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:14:46,838 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:14:46,838 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:14:46,838 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:14:46,838 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:14:46,839 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:14:46,839 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:14:46,839 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:14:46,839 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:14:46,839 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:14:46,840 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:14:46,840 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:14:46,840 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:14:46,840 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:14:46,840 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:14:46,840 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:14:46,841 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:14:46,841 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:14:46,841 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:14:46,841 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:14:46,841 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:14:46,842 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:14:46,842 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:14:46,842 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:14:46,842 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:14:46,842 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:14:46,842 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:14:46,843 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-13 21:14:46,843 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:14:46,843 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:14:46,843 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:14:46,843 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:14:46,843 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:14:46,844 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:14:46,844 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:14:46,844 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:14:46,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:14:46,844 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:14:46,845 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:14:46,845 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:14:46,845 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:14:46,845 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:14:46,845 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:14:46,845 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:14:46,846 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:14:46,846 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:14:46,846 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:14:46,846 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:14:46,846 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:14:46,847 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:14:46,847 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:14:46,847 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:14:46,847 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:14:46,847 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:14:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:14:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:14:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:14:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:14:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:14:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:14:46,849 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:14:46,849 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:14:46,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:14:46,849 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:14:46,849 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:14:46,849 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:14:46,850 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:14:46,850 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:14:46,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:14:46,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:46,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:46,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:46,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:14:46,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:14:46,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:14:46,851 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:14:46,851 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:14:46,851 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:14:46,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:14:46,852 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:14:46,852 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:14:46,852 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:14:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:14:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:14:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:14:46,853 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:14:46,853 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:14:46,853 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:14:46,853 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:14:46,853 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:14:46,853 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:14:46,853 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:14:46,854 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:14:46,854 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:14:46,854 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:14:46,854 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:14:46,854 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:14:46,854 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:14:46,854 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:14:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:14:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:14:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:14:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:14:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:14:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:14:46,856 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:14:46,856 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:14:46,856 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:14:46,856 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:14:46,858 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:14:46,858 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:14:46,858 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:14:46,865 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:14:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:14:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:14:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:14:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:14:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:14:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:14:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:14:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:14:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:14:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:14:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:14:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:14:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:14:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:14:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:14:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:14:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:14:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:14:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:14:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:14:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:14:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:14:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:14:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:14:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:14:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:14:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:14:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:14:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:14:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:14:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:14:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:14:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:14:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:14:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:14:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:14:46,872 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:14:46,872 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:14:46,872 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:14:46,872 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:14:46,872 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:14:46,872 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:14:46,872 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:14:46,873 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:14:46,873 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:14:46,873 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:14:46,873 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:14:46,873 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:14:46,873 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:14:46,873 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:14:46,873 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:14:46,874 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:14:46,874 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:14:46,874 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:14:46,874 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:14:46,874 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:14:46,874 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:14:46,874 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:14:46,874 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-13 21:14:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:14:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:14:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:14:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:14:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:14:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:14:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:14:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:14:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:14:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:14:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:14:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:14:46,879 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:14:46,879 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:14:46,879 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:14:46,879 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:14:46,879 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:14:46,879 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:46,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:14:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:14:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:14:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:14:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:14:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:14:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:14:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:14:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:14:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:14:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:14:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:14:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:14:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:14:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:14:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:14:48,894 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:14:48,895 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:14:48,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:48 BoogieIcfgContainer [2019-10-13 21:14:48,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:14:48,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:14:48,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:14:48,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:14:48,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:14:45" (1/3) ... [2019-10-13 21:14:48,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebd7917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:48, skipping insertion in model container [2019-10-13 21:14:48,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:46" (2/3) ... [2019-10-13 21:14:48,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebd7917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:48, skipping insertion in model container [2019-10-13 21:14:48,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:48" (3/3) ... [2019-10-13 21:14:48,904 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product23.cil.c [2019-10-13 21:14:48,914 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:14:48,924 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:14:48,938 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:14:48,972 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:14:48,972 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:14:48,973 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:14:48,973 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:14:48,973 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:14:48,973 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:14:48,977 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:14:48,977 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:14:49,022 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states. [2019-10-13 21:14:49,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-13 21:14:49,057 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:49,059 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, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:49,062 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:49,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:49,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1102474150, now seen corresponding path program 1 times [2019-10-13 21:14:49,081 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:49,082 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420770631] [2019-10-13 21:14:49,083 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:49,083 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:49,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:49,728 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 21:14:49,729 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420770631] [2019-10-13 21:14:49,730 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:49,730 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:14:49,731 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533186912] [2019-10-13 21:14:49,737 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:14:49,739 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:49,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:14:49,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:14:49,756 INFO L87 Difference]: Start difference. First operand 577 states. Second operand 2 states. [2019-10-13 21:14:49,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:49,867 INFO L93 Difference]: Finished difference Result 806 states and 1096 transitions. [2019-10-13 21:14:49,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:14:49,869 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 188 [2019-10-13 21:14:49,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:49,904 INFO L225 Difference]: With dead ends: 806 [2019-10-13 21:14:49,904 INFO L226 Difference]: Without dead ends: 531 [2019-10-13 21:14:49,915 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 21:14:49,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2019-10-13 21:14:50,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2019-10-13 21:14:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2019-10-13 21:14:50,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 725 transitions. [2019-10-13 21:14:50,013 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 725 transitions. Word has length 188 [2019-10-13 21:14:50,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:50,015 INFO L462 AbstractCegarLoop]: Abstraction has 531 states and 725 transitions. [2019-10-13 21:14:50,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:14:50,015 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 725 transitions. [2019-10-13 21:14:50,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-13 21:14:50,021 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:50,021 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:50,021 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:50,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:50,022 INFO L82 PathProgramCache]: Analyzing trace with hash 581217033, now seen corresponding path program 1 times [2019-10-13 21:14:50,022 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:50,022 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511884059] [2019-10-13 21:14:50,023 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:50,023 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:50,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:50,320 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 21:14:50,320 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511884059] [2019-10-13 21:14:50,321 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:50,321 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:50,321 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310089353] [2019-10-13 21:14:50,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:50,325 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:50,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:50,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:50,327 INFO L87 Difference]: Start difference. First operand 531 states and 725 transitions. Second operand 3 states. [2019-10-13 21:14:50,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:50,403 INFO L93 Difference]: Finished difference Result 789 states and 1058 transitions. [2019-10-13 21:14:50,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:50,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2019-10-13 21:14:50,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:50,409 INFO L225 Difference]: With dead ends: 789 [2019-10-13 21:14:50,409 INFO L226 Difference]: Without dead ends: 534 [2019-10-13 21:14:50,411 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 21:14:50,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2019-10-13 21:14:50,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 533. [2019-10-13 21:14:50,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2019-10-13 21:14:50,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 727 transitions. [2019-10-13 21:14:50,464 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 727 transitions. Word has length 189 [2019-10-13 21:14:50,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:50,466 INFO L462 AbstractCegarLoop]: Abstraction has 533 states and 727 transitions. [2019-10-13 21:14:50,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:50,466 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 727 transitions. [2019-10-13 21:14:50,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-10-13 21:14:50,474 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:50,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:50,474 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:50,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:50,475 INFO L82 PathProgramCache]: Analyzing trace with hash -762170887, now seen corresponding path program 1 times [2019-10-13 21:14:50,475 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:50,475 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210677664] [2019-10-13 21:14:50,475 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:50,476 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:50,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:50,759 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:50,760 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210677664] [2019-10-13 21:14:50,760 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:50,760 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:50,760 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872749586] [2019-10-13 21:14:50,762 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:50,765 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:50,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:50,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:50,767 INFO L87 Difference]: Start difference. First operand 533 states and 727 transitions. Second operand 3 states. [2019-10-13 21:14:50,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:50,824 INFO L93 Difference]: Finished difference Result 1044 states and 1455 transitions. [2019-10-13 21:14:50,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:50,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2019-10-13 21:14:50,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:50,831 INFO L225 Difference]: With dead ends: 1044 [2019-10-13 21:14:50,831 INFO L226 Difference]: Without dead ends: 576 [2019-10-13 21:14:50,833 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 21:14:50,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2019-10-13 21:14:50,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 575. [2019-10-13 21:14:50,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2019-10-13 21:14:50,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 799 transitions. [2019-10-13 21:14:50,879 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 799 transitions. Word has length 199 [2019-10-13 21:14:50,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:50,882 INFO L462 AbstractCegarLoop]: Abstraction has 575 states and 799 transitions. [2019-10-13 21:14:50,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:50,883 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 799 transitions. [2019-10-13 21:14:50,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-13 21:14:50,892 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:50,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:50,893 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:50,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:50,894 INFO L82 PathProgramCache]: Analyzing trace with hash -2111399604, now seen corresponding path program 1 times [2019-10-13 21:14:50,894 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:50,898 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829567047] [2019-10-13 21:14:50,898 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:50,898 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:50,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:51,205 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829567047] [2019-10-13 21:14:51,205 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:51,206 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:51,206 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93071945] [2019-10-13 21:14:51,207 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:51,207 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:51,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:51,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:51,208 INFO L87 Difference]: Start difference. First operand 575 states and 799 transitions. Second operand 3 states. [2019-10-13 21:14:51,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:51,249 INFO L93 Difference]: Finished difference Result 1167 states and 1666 transitions. [2019-10-13 21:14:51,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:51,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2019-10-13 21:14:51,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:51,254 INFO L225 Difference]: With dead ends: 1167 [2019-10-13 21:14:51,254 INFO L226 Difference]: Without dead ends: 657 [2019-10-13 21:14:51,256 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 21:14:51,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-13 21:14:51,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 656. [2019-10-13 21:14:51,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2019-10-13 21:14:51,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 937 transitions. [2019-10-13 21:14:51,290 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 937 transitions. Word has length 200 [2019-10-13 21:14:51,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:51,291 INFO L462 AbstractCegarLoop]: Abstraction has 656 states and 937 transitions. [2019-10-13 21:14:51,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:51,291 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 937 transitions. [2019-10-13 21:14:51,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-13 21:14:51,296 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:51,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:51,296 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:51,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:51,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1097400825, now seen corresponding path program 1 times [2019-10-13 21:14:51,297 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:51,298 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239982760] [2019-10-13 21:14:51,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:51,299 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:51,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:51,450 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239982760] [2019-10-13 21:14:51,450 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:51,450 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:51,451 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920965254] [2019-10-13 21:14:51,451 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:51,451 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:51,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:51,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:51,452 INFO L87 Difference]: Start difference. First operand 656 states and 937 transitions. Second operand 3 states. [2019-10-13 21:14:51,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:51,494 INFO L93 Difference]: Finished difference Result 1404 states and 2070 transitions. [2019-10-13 21:14:51,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:51,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2019-10-13 21:14:51,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:51,502 INFO L225 Difference]: With dead ends: 1404 [2019-10-13 21:14:51,502 INFO L226 Difference]: Without dead ends: 813 [2019-10-13 21:14:51,505 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 21:14:51,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2019-10-13 21:14:51,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 812. [2019-10-13 21:14:51,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2019-10-13 21:14:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1201 transitions. [2019-10-13 21:14:51,541 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1201 transitions. Word has length 201 [2019-10-13 21:14:51,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:51,541 INFO L462 AbstractCegarLoop]: Abstraction has 812 states and 1201 transitions. [2019-10-13 21:14:51,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:51,541 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1201 transitions. [2019-10-13 21:14:51,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-13 21:14:51,549 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:51,550 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:51,550 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:51,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:51,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1333357236, now seen corresponding path program 1 times [2019-10-13 21:14:51,551 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:51,551 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419418934] [2019-10-13 21:14:51,551 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:51,552 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:51,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:51,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419418934] [2019-10-13 21:14:51,820 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:51,820 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:51,820 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056885977] [2019-10-13 21:14:51,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:51,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:51,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:51,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:51,822 INFO L87 Difference]: Start difference. First operand 812 states and 1201 transitions. Second operand 3 states. [2019-10-13 21:14:51,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:51,875 INFO L93 Difference]: Finished difference Result 1860 states and 2842 transitions. [2019-10-13 21:14:51,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:51,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2019-10-13 21:14:51,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:51,884 INFO L225 Difference]: With dead ends: 1860 [2019-10-13 21:14:51,884 INFO L226 Difference]: Without dead ends: 1113 [2019-10-13 21:14:51,888 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 21:14:51,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2019-10-13 21:14:51,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1112. [2019-10-13 21:14:51,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2019-10-13 21:14:51,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1705 transitions. [2019-10-13 21:14:51,941 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1705 transitions. Word has length 202 [2019-10-13 21:14:51,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:51,941 INFO L462 AbstractCegarLoop]: Abstraction has 1112 states and 1705 transitions. [2019-10-13 21:14:51,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:51,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1705 transitions. [2019-10-13 21:14:51,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-13 21:14:51,949 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:51,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:51,949 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:51,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:51,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1889313127, now seen corresponding path program 1 times [2019-10-13 21:14:51,950 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:51,950 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755999424] [2019-10-13 21:14:51,950 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:51,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:51,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:52,147 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 21:14:52,147 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755999424] [2019-10-13 21:14:52,147 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:52,148 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:14:52,148 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181193250] [2019-10-13 21:14:52,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:14:52,149 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:52,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:14:52,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:14:52,149 INFO L87 Difference]: Start difference. First operand 1112 states and 1705 transitions. Second operand 8 states. [2019-10-13 21:14:52,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:52,219 INFO L93 Difference]: Finished difference Result 1354 states and 2026 transitions. [2019-10-13 21:14:52,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:14:52,220 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 205 [2019-10-13 21:14:52,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:52,226 INFO L225 Difference]: With dead ends: 1354 [2019-10-13 21:14:52,227 INFO L226 Difference]: Without dead ends: 1112 [2019-10-13 21:14:52,228 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:14:52,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2019-10-13 21:14:52,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1112. [2019-10-13 21:14:52,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2019-10-13 21:14:52,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1704 transitions. [2019-10-13 21:14:52,275 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1704 transitions. Word has length 205 [2019-10-13 21:14:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:52,276 INFO L462 AbstractCegarLoop]: Abstraction has 1112 states and 1704 transitions. [2019-10-13 21:14:52,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:14:52,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1704 transitions. [2019-10-13 21:14:52,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-13 21:14:52,284 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:52,285 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, 1, 1, 1, 1, 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 21:14:52,285 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:52,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:52,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1379903379, now seen corresponding path program 1 times [2019-10-13 21:14:52,286 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:52,286 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436520024] [2019-10-13 21:14:52,286 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:52,287 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:52,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:52,554 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 21:14:52,555 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436520024] [2019-10-13 21:14:52,555 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:52,555 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:14:52,556 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360747923] [2019-10-13 21:14:52,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:14:52,557 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:52,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:14:52,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:14:52,557 INFO L87 Difference]: Start difference. First operand 1112 states and 1704 transitions. Second operand 7 states. [2019-10-13 21:14:55,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:55,212 INFO L93 Difference]: Finished difference Result 1625 states and 2384 transitions. [2019-10-13 21:14:55,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:14:55,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2019-10-13 21:14:55,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:55,223 INFO L225 Difference]: With dead ends: 1625 [2019-10-13 21:14:55,224 INFO L226 Difference]: Without dead ends: 1379 [2019-10-13 21:14:55,226 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:14:55,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2019-10-13 21:14:55,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1370. [2019-10-13 21:14:55,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1370 states. [2019-10-13 21:14:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2044 transitions. [2019-10-13 21:14:55,314 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2044 transitions. Word has length 212 [2019-10-13 21:14:55,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:55,317 INFO L462 AbstractCegarLoop]: Abstraction has 1370 states and 2044 transitions. [2019-10-13 21:14:55,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:14:55,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2044 transitions. [2019-10-13 21:14:55,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-10-13 21:14:55,326 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:55,326 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, 1, 1, 1, 1, 1, 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 21:14:55,327 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:55,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:55,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1428432739, now seen corresponding path program 1 times [2019-10-13 21:14:55,348 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:55,348 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999579353] [2019-10-13 21:14:55,348 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:55,348 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:55,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:55,955 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 21:14:55,956 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999579353] [2019-10-13 21:14:55,956 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:55,957 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-13 21:14:55,958 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509641664] [2019-10-13 21:14:55,959 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 21:14:55,959 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:55,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 21:14:55,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2019-10-13 21:14:55,960 INFO L87 Difference]: Start difference. First operand 1370 states and 2044 transitions. Second operand 26 states. [2019-10-13 21:14:56,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:56,700 INFO L93 Difference]: Finished difference Result 2001 states and 2897 transitions. [2019-10-13 21:14:56,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-13 21:14:56,701 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 213 [2019-10-13 21:14:56,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:56,717 INFO L225 Difference]: With dead ends: 2001 [2019-10-13 21:14:56,717 INFO L226 Difference]: Without dead ends: 1493 [2019-10-13 21:14:56,720 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:14:56,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2019-10-13 21:14:56,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1488. [2019-10-13 21:14:56,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2019-10-13 21:14:56,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2195 transitions. [2019-10-13 21:14:56,812 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2195 transitions. Word has length 213 [2019-10-13 21:14:56,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:56,812 INFO L462 AbstractCegarLoop]: Abstraction has 1488 states and 2195 transitions. [2019-10-13 21:14:56,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 21:14:56,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2195 transitions. [2019-10-13 21:14:56,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-10-13 21:14:56,820 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:56,820 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:14:56,821 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:56,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:56,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1536275324, now seen corresponding path program 1 times [2019-10-13 21:14:56,821 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:56,821 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979212615] [2019-10-13 21:14:56,822 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:56,822 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:56,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:57,074 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:14:57,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979212615] [2019-10-13 21:14:57,075 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:57,075 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:14:57,075 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104803340] [2019-10-13 21:14:57,076 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:14:57,076 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:57,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:14:57,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:14:57,077 INFO L87 Difference]: Start difference. First operand 1488 states and 2195 transitions. Second operand 8 states. [2019-10-13 21:15:01,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:01,765 INFO L93 Difference]: Finished difference Result 3380 states and 4772 transitions. [2019-10-13 21:15:01,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:15:01,766 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 244 [2019-10-13 21:15:01,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:01,792 INFO L225 Difference]: With dead ends: 3380 [2019-10-13 21:15:01,793 INFO L226 Difference]: Without dead ends: 2778 [2019-10-13 21:15:01,807 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:15:01,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2019-10-13 21:15:01,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 2766. [2019-10-13 21:15:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2766 states. [2019-10-13 21:15:01,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 3927 transitions. [2019-10-13 21:15:01,983 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 3927 transitions. Word has length 244 [2019-10-13 21:15:01,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:01,986 INFO L462 AbstractCegarLoop]: Abstraction has 2766 states and 3927 transitions. [2019-10-13 21:15:01,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:15:01,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 3927 transitions. [2019-10-13 21:15:02,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-13 21:15:02,005 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:02,006 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 21:15:02,006 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:02,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:02,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1613499385, now seen corresponding path program 1 times [2019-10-13 21:15:02,007 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:02,007 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044572114] [2019-10-13 21:15:02,007 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,007 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:15:02,485 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044572114] [2019-10-13 21:15:02,486 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:02,486 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2019-10-13 21:15:02,486 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570176592] [2019-10-13 21:15:02,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-13 21:15:02,487 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:02,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-13 21:15:02,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:15:02,488 INFO L87 Difference]: Start difference. First operand 2766 states and 3927 transitions. Second operand 20 states. [2019-10-13 21:15:03,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:03,016 INFO L93 Difference]: Finished difference Result 4306 states and 5976 transitions. [2019-10-13 21:15:03,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-13 21:15:03,016 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 245 [2019-10-13 21:15:03,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:03,035 INFO L225 Difference]: With dead ends: 4306 [2019-10-13 21:15:03,035 INFO L226 Difference]: Without dead ends: 2470 [2019-10-13 21:15:03,042 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:03,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2019-10-13 21:15:03,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2460. [2019-10-13 21:15:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2460 states. [2019-10-13 21:15:03,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 3505 transitions. [2019-10-13 21:15:03,145 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 3505 transitions. Word has length 245 [2019-10-13 21:15:03,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:03,145 INFO L462 AbstractCegarLoop]: Abstraction has 2460 states and 3505 transitions. [2019-10-13 21:15:03,146 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-13 21:15:03,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 3505 transitions. [2019-10-13 21:15:03,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2019-10-13 21:15:03,156 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:03,156 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:15:03,156 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:03,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:03,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1147475467, now seen corresponding path program 1 times [2019-10-13 21:15:03,157 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:03,157 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707125513] [2019-10-13 21:15:03,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:03,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:03,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:03,536 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:03,537 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707125513] [2019-10-13 21:15:03,537 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220824421] [2019-10-13 21:15:03,537 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 21:15:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:04,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:04,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:15:04,398 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:04,811 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:04,895 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:04,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:05,162 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:05,162 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-13 21:15:05,162 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572246651] [2019-10-13 21:15:05,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:15:05,163 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:05,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:15:05,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:15:05,164 INFO L87 Difference]: Start difference. First operand 2460 states and 3505 transitions. Second operand 9 states. [2019-10-13 21:15:06,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:06,599 INFO L93 Difference]: Finished difference Result 4898 states and 6990 transitions. [2019-10-13 21:15:06,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:15:06,599 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 254 [2019-10-13 21:15:06,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:06,614 INFO L225 Difference]: With dead ends: 4898 [2019-10-13 21:15:06,614 INFO L226 Difference]: Without dead ends: 2474 [2019-10-13 21:15:06,623 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 494 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:15:06,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2019-10-13 21:15:06,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2474. [2019-10-13 21:15:06,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2019-10-13 21:15:06,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3523 transitions. [2019-10-13 21:15:06,742 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3523 transitions. Word has length 254 [2019-10-13 21:15:06,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:06,742 INFO L462 AbstractCegarLoop]: Abstraction has 2474 states and 3523 transitions. [2019-10-13 21:15:06,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:15:06,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3523 transitions. [2019-10-13 21:15:06,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2019-10-13 21:15:06,752 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:06,752 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 21:15:06,968 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:06,968 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:06,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:06,969 INFO L82 PathProgramCache]: Analyzing trace with hash 990010452, now seen corresponding path program 1 times [2019-10-13 21:15:06,969 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:06,970 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901057839] [2019-10-13 21:15:06,970 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:06,970 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:06,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:07,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901057839] [2019-10-13 21:15:07,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500134296] [2019-10-13 21:15:07,239 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 21:15:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:08,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 3038 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:08,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:08,264 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:15:08,264 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:08,561 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:08,605 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:08,671 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:08,672 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:15:08,672 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095996222] [2019-10-13 21:15:08,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:08,673 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:08,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:08,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:15:08,674 INFO L87 Difference]: Start difference. First operand 2474 states and 3523 transitions. Second operand 7 states. [2019-10-13 21:15:09,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:09,880 INFO L93 Difference]: Finished difference Result 4899 states and 7000 transitions. [2019-10-13 21:15:09,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:09,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2019-10-13 21:15:09,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:09,895 INFO L225 Difference]: With dead ends: 4899 [2019-10-13 21:15:09,895 INFO L226 Difference]: Without dead ends: 2476 [2019-10-13 21:15:09,906 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 501 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:15:09,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2019-10-13 21:15:09,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2476. [2019-10-13 21:15:09,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2476 states. [2019-10-13 21:15:10,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 3526 transitions. [2019-10-13 21:15:10,006 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 3526 transitions. Word has length 255 [2019-10-13 21:15:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:10,007 INFO L462 AbstractCegarLoop]: Abstraction has 2476 states and 3526 transitions. [2019-10-13 21:15:10,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:10,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 3526 transitions. [2019-10-13 21:15:10,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-10-13 21:15:10,020 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:10,021 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:15:10,230 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:10,231 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:10,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:10,231 INFO L82 PathProgramCache]: Analyzing trace with hash 941903647, now seen corresponding path program 1 times [2019-10-13 21:15:10,232 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:10,232 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970186703] [2019-10-13 21:15:10,232 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:10,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:10,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:10,557 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970186703] [2019-10-13 21:15:10,557 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473917075] [2019-10-13 21:15:10,557 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 21:15:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:11,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:11,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:11,387 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:11,388 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:11,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:11,784 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:11,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:11,972 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:11,972 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:11,972 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-13 21:15:11,973 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137501107] [2019-10-13 21:15:11,974 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:11,974 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:11,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:11,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:15:11,975 INFO L87 Difference]: Start difference. First operand 2476 states and 3526 transitions. Second operand 16 states. [2019-10-13 21:15:14,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:14,175 INFO L93 Difference]: Finished difference Result 4903 states and 6994 transitions. [2019-10-13 21:15:14,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:14,176 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 256 [2019-10-13 21:15:14,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:14,191 INFO L225 Difference]: With dead ends: 4903 [2019-10-13 21:15:14,191 INFO L226 Difference]: Without dead ends: 2488 [2019-10-13 21:15:14,200 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 498 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:15:14,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2019-10-13 21:15:14,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2486. [2019-10-13 21:15:14,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2486 states. [2019-10-13 21:15:14,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3537 transitions. [2019-10-13 21:15:14,300 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3537 transitions. Word has length 256 [2019-10-13 21:15:14,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:14,300 INFO L462 AbstractCegarLoop]: Abstraction has 2486 states and 3537 transitions. [2019-10-13 21:15:14,301 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:15:14,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3537 transitions. [2019-10-13 21:15:14,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2019-10-13 21:15:14,307 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:14,308 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:15:14,523 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:14,523 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:14,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:14,524 INFO L82 PathProgramCache]: Analyzing trace with hash 115213538, now seen corresponding path program 2 times [2019-10-13 21:15:14,525 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:14,525 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819352448] [2019-10-13 21:15:14,526 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:14,526 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:14,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:15,080 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:15,080 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819352448] [2019-10-13 21:15:15,081 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558041171] [2019-10-13 21:15:15,081 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:15,744 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:15:15,744 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:15,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:15,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:16,082 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:16,404 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:16,484 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:15:16,570 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:16,570 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [29] total 39 [2019-10-13 21:15:16,570 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001933968] [2019-10-13 21:15:16,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:15:16,571 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:16,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:15:16,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1385, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:15:16,572 INFO L87 Difference]: Start difference. First operand 2486 states and 3537 transitions. Second operand 12 states.