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_spec1_product12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:13:59,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:13:59,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:13:59,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:13:59,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:13:59,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:13:59,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:13:59,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:13:59,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:13:59,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:13:59,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:13:59,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:13:59,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:13:59,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:13:59,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:13:59,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:13:59,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:13:59,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:13:59,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:13:59,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:13:59,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:13:59,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:13:59,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:13:59,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:13:59,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:13:59,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:13:59,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:13:59,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:13:59,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:13:59,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:14:00,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:14:00,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:14:00,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:14:00,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:14:00,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:14:00,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:14:00,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:14:00,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:14:00,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:14:00,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:14:00,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:14:00,010 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 21:14:00,033 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:14:00,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:14:00,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:14:00,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:14:00,036 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:14:00,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:14:00,037 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:14:00,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:14:00,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:14:00,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:14:00,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:14:00,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:14:00,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:14:00,039 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:14:00,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:14:00,040 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:14:00,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:14:00,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:14:00,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:14:00,041 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:14:00,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:14:00,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:00,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:14:00,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:14:00,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:14:00,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:14:00,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:14:00,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:14:00,043 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 21:14:00,359 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:14:00,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:14:00,387 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:14:00,389 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:14:00,389 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:14:00,390 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product12.cil.c [2019-10-13 21:14:00,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34030b67f/c542d8700d2f4dcb9a7d7b300ac9b19b/FLAG4719c2225 [2019-10-13 21:14:01,111 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:14:01,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product12.cil.c [2019-10-13 21:14:01,146 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34030b67f/c542d8700d2f4dcb9a7d7b300ac9b19b/FLAG4719c2225 [2019-10-13 21:14:01,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34030b67f/c542d8700d2f4dcb9a7d7b300ac9b19b [2019-10-13 21:14:01,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:14:01,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:14:01,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:01,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:14:01,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:14:01,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:01" (1/1) ... [2019-10-13 21:14:01,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6608a0f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:01, skipping insertion in model container [2019-10-13 21:14:01,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:01" (1/1) ... [2019-10-13 21:14:01,372 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:14:01,458 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:14:02,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:02,277 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:14:02,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:02,520 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:14:02,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:02 WrapperNode [2019-10-13 21:14:02,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:02,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:14:02,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:14:02,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:14:02,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:02" (1/1) ... [2019-10-13 21:14:02,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:02" (1/1) ... [2019-10-13 21:14:02,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:02" (1/1) ... [2019-10-13 21:14:02,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:02" (1/1) ... [2019-10-13 21:14:02,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:02" (1/1) ... [2019-10-13 21:14:02,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:02" (1/1) ... [2019-10-13 21:14:02,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:02" (1/1) ... [2019-10-13 21:14:02,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:14:02,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:14:02,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:14:02,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:14:02,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:02" (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 21:14:02,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:14:02,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:14:02,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:02,787 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:14:02,787 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:14:02,788 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:14:02,788 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:14:02,788 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:14:02,788 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:14:02,788 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:14:02,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:02,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:14:02,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:02,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:14:02,789 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:14:02,790 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:14:02,790 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:14:02,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:14:02,790 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:14:02,791 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:14:02,791 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:14:02,791 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:14:02,791 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:14:02,792 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:14:02,792 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:14:02,792 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:14:02,792 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:14:02,793 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:14:02,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:14:02,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:14:02,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:14:02,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:14:02,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:14:02,794 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:14:02,794 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:14:02,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:14:02,794 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:14:02,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:14:02,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:14:02,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:14:02,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:14:02,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:14:02,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:14:02,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:14:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:14:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:14:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:14:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:14:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:14:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:14:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:14:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:14:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:14:02,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:14:02,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:14:02,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:14:02,797 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:14:02,797 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:14:02,797 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:14:02,797 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:14:02,797 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:14:02,798 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:14:02,798 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:14:02,798 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:14:02,798 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:14:02,798 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:14:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:14:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:14:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:14:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:14:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:14:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:14:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:14:02,800 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:14:02,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:14:02,800 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:14:02,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:14:02,800 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:14:02,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:14:02,801 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:14:02,801 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:14:02,801 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:14:02,801 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:14:02,801 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:14:02,801 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:14:02,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:14:02,802 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:14:02,802 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:14:02,802 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:14:02,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:14:02,803 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:14:02,803 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:14:02,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:02,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:02,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:02,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:14:02,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:14:02,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:14:02,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:14:02,804 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:14:02,804 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:14:02,804 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:14:02,804 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:14:02,804 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:14:02,804 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:14:02,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__AddressBookEncrypt_spec__1 [2019-10-13 21:14:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:14:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:14:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:14:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:14:02,805 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:14:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:14:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:14:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:14:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:14:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:14:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:14:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:14:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:14:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:14:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:14:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:14:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:14:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:14:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:14:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:14:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:14:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:14:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:14:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:14:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:14:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:14:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:14:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:14:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:14:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:14:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:14:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:14:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:14:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:14:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:14:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:14:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:14:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:14:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:14:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:14:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:14:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:14:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:14:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:14:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:14:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:14:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:14:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:14:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:14:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:14:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:14:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:14:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:14:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:14:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:14:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:14:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:14:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:14:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:14:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:14:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:14:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:14:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:14:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:14:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:14:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:14:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:14:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:14:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:14:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:14:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:14:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:14:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:14:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:14:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:14:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__AddressBookEncrypt_spec__1 [2019-10-13 21:14:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:14:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:14:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:14:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:14:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:14:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:14:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:14:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:14:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:14:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:14:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:14:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:14:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:14:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:14:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:14:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:14:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:14:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:14:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:14:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:14:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:14:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:14:02,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:14:02,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:14:02,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:14:02,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:02,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:14:02,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:14:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:14:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:14:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:14:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:14:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:14:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:14:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:14:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:14:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:14:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:14:02,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:14:02,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:14:04,935 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:14:04,936 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:14:04,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:04 BoogieIcfgContainer [2019-10-13 21:14:04,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:14:04,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:14:04,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:14:04,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:14:04,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:14:01" (1/3) ... [2019-10-13 21:14:04,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337a3ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:04, skipping insertion in model container [2019-10-13 21:14:04,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:02" (2/3) ... [2019-10-13 21:14:04,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337a3ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:04, skipping insertion in model container [2019-10-13 21:14:04,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:04" (3/3) ... [2019-10-13 21:14:04,952 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec1_product12.cil.c [2019-10-13 21:14:04,965 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:14:04,980 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:14:04,993 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:14:05,038 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:14:05,038 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:14:05,038 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:14:05,038 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:14:05,038 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:14:05,039 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:14:05,039 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:14:05,039 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:14:05,076 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states. [2019-10-13 21:14:05,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 21:14:05,110 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:05,112 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] [2019-10-13 21:14:05,115 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:05,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:05,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1292534618, now seen corresponding path program 1 times [2019-10-13 21:14:05,131 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:05,132 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075377260] [2019-10-13 21:14:05,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:05,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:05,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:05,674 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 21:14:05,677 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075377260] [2019-10-13 21:14:05,679 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:05,680 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:14:05,680 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552023342] [2019-10-13 21:14:05,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:14:05,690 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:05,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:14:05,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:14:05,716 INFO L87 Difference]: Start difference. First operand 424 states. Second operand 2 states. [2019-10-13 21:14:05,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:05,795 INFO L93 Difference]: Finished difference Result 557 states and 745 transitions. [2019-10-13 21:14:05,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:14:05,797 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 145 [2019-10-13 21:14:05,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:05,820 INFO L225 Difference]: With dead ends: 557 [2019-10-13 21:14:05,820 INFO L226 Difference]: Without dead ends: 379 [2019-10-13 21:14:05,826 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 21:14:05,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2019-10-13 21:14:05,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2019-10-13 21:14:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2019-10-13 21:14:05,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 510 transitions. [2019-10-13 21:14:05,952 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 510 transitions. Word has length 145 [2019-10-13 21:14:05,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:05,955 INFO L462 AbstractCegarLoop]: Abstraction has 379 states and 510 transitions. [2019-10-13 21:14:05,956 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:14:05,956 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 510 transitions. [2019-10-13 21:14:05,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-13 21:14:05,963 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:05,964 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] [2019-10-13 21:14:05,964 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:05,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:05,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1702693606, now seen corresponding path program 1 times [2019-10-13 21:14:05,966 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:05,966 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310285343] [2019-10-13 21:14:05,966 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:05,967 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:05,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:06,273 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 21:14:06,274 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310285343] [2019-10-13 21:14:06,274 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:06,274 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:06,275 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765674795] [2019-10-13 21:14:06,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:06,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:06,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:06,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:06,279 INFO L87 Difference]: Start difference. First operand 379 states and 510 transitions. Second operand 3 states. [2019-10-13 21:14:06,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:06,358 INFO L93 Difference]: Finished difference Result 540 states and 714 transitions. [2019-10-13 21:14:06,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:06,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2019-10-13 21:14:06,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:06,373 INFO L225 Difference]: With dead ends: 540 [2019-10-13 21:14:06,374 INFO L226 Difference]: Without dead ends: 382 [2019-10-13 21:14:06,377 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 21:14:06,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2019-10-13 21:14:06,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 381. [2019-10-13 21:14:06,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2019-10-13 21:14:06,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 512 transitions. [2019-10-13 21:14:06,426 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 512 transitions. Word has length 146 [2019-10-13 21:14:06,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:06,426 INFO L462 AbstractCegarLoop]: Abstraction has 381 states and 512 transitions. [2019-10-13 21:14:06,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:06,427 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 512 transitions. [2019-10-13 21:14:06,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-13 21:14:06,430 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:06,430 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] [2019-10-13 21:14:06,430 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:06,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:06,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1477290126, now seen corresponding path program 1 times [2019-10-13 21:14:06,431 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:06,431 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296642474] [2019-10-13 21:14:06,431 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:06,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:06,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:06,561 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 21:14:06,562 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296642474] [2019-10-13 21:14:06,562 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:06,562 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:06,562 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024273456] [2019-10-13 21:14:06,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:06,563 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:06,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:06,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:06,564 INFO L87 Difference]: Start difference. First operand 381 states and 512 transitions. Second operand 3 states. [2019-10-13 21:14:06,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:06,603 INFO L93 Difference]: Finished difference Result 736 states and 1019 transitions. [2019-10-13 21:14:06,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:06,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 152 [2019-10-13 21:14:06,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:06,608 INFO L225 Difference]: With dead ends: 736 [2019-10-13 21:14:06,608 INFO L226 Difference]: Without dead ends: 420 [2019-10-13 21:14:06,610 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 21:14:06,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2019-10-13 21:14:06,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 419. [2019-10-13 21:14:06,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2019-10-13 21:14:06,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 578 transitions. [2019-10-13 21:14:06,690 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 578 transitions. Word has length 152 [2019-10-13 21:14:06,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:06,691 INFO L462 AbstractCegarLoop]: Abstraction has 419 states and 578 transitions. [2019-10-13 21:14:06,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:06,691 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 578 transitions. [2019-10-13 21:14:06,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-13 21:14:06,696 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:06,698 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] [2019-10-13 21:14:06,698 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:06,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:06,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1886930768, now seen corresponding path program 1 times [2019-10-13 21:14:06,699 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:06,699 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630224828] [2019-10-13 21:14:06,699 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:06,699 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:06,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:07,531 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630224828] [2019-10-13 21:14:07,531 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:07,531 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2019-10-13 21:14:07,531 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034946969] [2019-10-13 21:14:07,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-10-13 21:14:07,533 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:07,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-10-13 21:14:07,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=801, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:14:07,536 INFO L87 Difference]: Start difference. First operand 419 states and 578 transitions. Second operand 30 states. [2019-10-13 21:14:11,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:11,478 INFO L93 Difference]: Finished difference Result 1195 states and 1682 transitions. [2019-10-13 21:14:11,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-10-13 21:14:11,481 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 153 [2019-10-13 21:14:11,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:11,487 INFO L225 Difference]: With dead ends: 1195 [2019-10-13 21:14:11,487 INFO L226 Difference]: Without dead ends: 812 [2019-10-13 21:14:11,490 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=254, Invalid=3052, Unknown=0, NotChecked=0, Total=3306 [2019-10-13 21:14:11,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2019-10-13 21:14:11,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 629. [2019-10-13 21:14:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-13 21:14:11,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 914 transitions. [2019-10-13 21:14:11,535 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 914 transitions. Word has length 153 [2019-10-13 21:14:11,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:11,536 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 914 transitions. [2019-10-13 21:14:11,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-10-13 21:14:11,536 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 914 transitions. [2019-10-13 21:14:11,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 21:14:11,540 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:11,541 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-13 21:14:11,541 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:11,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:11,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1456150513, now seen corresponding path program 1 times [2019-10-13 21:14:11,541 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:11,542 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531218718] [2019-10-13 21:14:11,542 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:11,542 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:11,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:14:12,184 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531218718] [2019-10-13 21:14:12,184 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983842863] [2019-10-13 21:14:12,185 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 21:14:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:12,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 2223 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:14:12,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:14:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:14:12,969 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:14:13,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:13,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:13,462 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:14:13,462 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [30, 7] total 38 [2019-10-13 21:14:13,462 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470040597] [2019-10-13 21:14:13,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:14:13,463 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:13,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:14:13,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:14:13,464 INFO L87 Difference]: Start difference. First operand 629 states and 914 transitions. Second operand 7 states. [2019-10-13 21:14:14,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:14,320 INFO L93 Difference]: Finished difference Result 1211 states and 1781 transitions. [2019-10-13 21:14:14,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:14:14,321 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2019-10-13 21:14:14,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:14,326 INFO L225 Difference]: With dead ends: 1211 [2019-10-13 21:14:14,326 INFO L226 Difference]: Without dead ends: 633 [2019-10-13 21:14:14,329 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 300 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=1435, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:14:14,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-13 21:14:14,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2019-10-13 21:14:14,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2019-10-13 21:14:14,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 919 transitions. [2019-10-13 21:14:14,369 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 919 transitions. Word has length 154 [2019-10-13 21:14:14,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:14,370 INFO L462 AbstractCegarLoop]: Abstraction has 633 states and 919 transitions. [2019-10-13 21:14:14,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:14:14,370 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 919 transitions. [2019-10-13 21:14:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 21:14:14,375 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:14,376 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:14,585 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:14:14,585 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:14,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:14,586 INFO L82 PathProgramCache]: Analyzing trace with hash 864289227, now seen corresponding path program 1 times [2019-10-13 21:14:14,586 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:14,587 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558722127] [2019-10-13 21:14:14,587 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:14,587 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:14,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:15,195 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558722127] [2019-10-13 21:14:15,195 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:15,195 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2019-10-13 21:14:15,196 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622139345] [2019-10-13 21:14:15,196 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-10-13 21:14:15,196 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:15,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-10-13 21:14:15,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:14:15,197 INFO L87 Difference]: Start difference. First operand 633 states and 919 transitions. Second operand 25 states. [2019-10-13 21:14:21,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:21,260 INFO L93 Difference]: Finished difference Result 1864 states and 2600 transitions. [2019-10-13 21:14:21,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2019-10-13 21:14:21,261 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 155 [2019-10-13 21:14:21,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:21,276 INFO L225 Difference]: With dead ends: 1864 [2019-10-13 21:14:21,276 INFO L226 Difference]: Without dead ends: 1720 [2019-10-13 21:14:21,280 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=681, Invalid=5325, Unknown=0, NotChecked=0, Total=6006 [2019-10-13 21:14:21,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2019-10-13 21:14:21,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1358. [2019-10-13 21:14:21,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2019-10-13 21:14:21,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1964 transitions. [2019-10-13 21:14:21,404 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1964 transitions. Word has length 155 [2019-10-13 21:14:21,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:21,406 INFO L462 AbstractCegarLoop]: Abstraction has 1358 states and 1964 transitions. [2019-10-13 21:14:21,406 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-10-13 21:14:21,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1964 transitions. [2019-10-13 21:14:21,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-13 21:14:21,413 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:21,414 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:21,414 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:21,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:21,414 INFO L82 PathProgramCache]: Analyzing trace with hash 339417093, now seen corresponding path program 1 times [2019-10-13 21:14:21,415 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:21,415 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614428619] [2019-10-13 21:14:21,415 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:21,415 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:21,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:21,616 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 21:14:21,617 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614428619] [2019-10-13 21:14:21,617 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:21,617 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:14:21,618 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725385273] [2019-10-13 21:14:21,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:14:21,618 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:21,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:14:21,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:14:21,619 INFO L87 Difference]: Start difference. First operand 1358 states and 1964 transitions. Second operand 9 states. [2019-10-13 21:14:21,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:21,888 INFO L93 Difference]: Finished difference Result 1819 states and 2569 transitions. [2019-10-13 21:14:21,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:14:21,889 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 156 [2019-10-13 21:14:21,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:21,898 INFO L225 Difference]: With dead ends: 1819 [2019-10-13 21:14:21,898 INFO L226 Difference]: Without dead ends: 1393 [2019-10-13 21:14:21,900 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:14:21,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2019-10-13 21:14:21,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1393. [2019-10-13 21:14:21,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1393 states. [2019-10-13 21:14:21,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 2018 transitions. [2019-10-13 21:14:21,989 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 2018 transitions. Word has length 156 [2019-10-13 21:14:21,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:21,989 INFO L462 AbstractCegarLoop]: Abstraction has 1393 states and 2018 transitions. [2019-10-13 21:14:21,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:14:21,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 2018 transitions. [2019-10-13 21:14:21,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-13 21:14:21,995 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:21,995 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:21,996 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:21,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:21,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1109181897, now seen corresponding path program 1 times [2019-10-13 21:14:21,996 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:21,997 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163601128] [2019-10-13 21:14:21,997 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:21,997 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:21,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:22,285 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 21:14:22,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163601128] [2019-10-13 21:14:22,286 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:22,286 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:14:22,288 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960982528] [2019-10-13 21:14:22,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:14:22,289 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:22,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:14:22,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:14:22,290 INFO L87 Difference]: Start difference. First operand 1393 states and 2018 transitions. Second operand 5 states. [2019-10-13 21:14:23,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:23,136 INFO L93 Difference]: Finished difference Result 3181 states and 4504 transitions. [2019-10-13 21:14:23,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:14:23,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2019-10-13 21:14:23,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:23,161 INFO L225 Difference]: With dead ends: 3181 [2019-10-13 21:14:23,161 INFO L226 Difference]: Without dead ends: 2740 [2019-10-13 21:14:23,167 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:14:23,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2019-10-13 21:14:23,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2524. [2019-10-13 21:14:23,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2524 states. [2019-10-13 21:14:23,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3568 transitions. [2019-10-13 21:14:23,439 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3568 transitions. Word has length 156 [2019-10-13 21:14:23,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:23,441 INFO L462 AbstractCegarLoop]: Abstraction has 2524 states and 3568 transitions. [2019-10-13 21:14:23,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:14:23,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3568 transitions. [2019-10-13 21:14:23,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-13 21:14:23,451 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:23,451 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:23,451 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:23,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:23,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1175681558, now seen corresponding path program 1 times [2019-10-13 21:14:23,452 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:23,453 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337592363] [2019-10-13 21:14:23,453 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:23,453 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:23,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:23,626 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337592363] [2019-10-13 21:14:23,626 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:23,626 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:14:23,627 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434526891] [2019-10-13 21:14:23,628 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:14:23,628 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:23,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:14:23,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:14:23,629 INFO L87 Difference]: Start difference. First operand 2524 states and 3568 transitions. Second operand 9 states. [2019-10-13 21:14:23,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:23,940 INFO L93 Difference]: Finished difference Result 2839 states and 3975 transitions. [2019-10-13 21:14:23,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:14:23,941 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 156 [2019-10-13 21:14:23,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:23,947 INFO L225 Difference]: With dead ends: 2839 [2019-10-13 21:14:23,947 INFO L226 Difference]: Without dead ends: 966 [2019-10-13 21:14:23,954 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:14:23,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2019-10-13 21:14:24,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 964. [2019-10-13 21:14:24,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2019-10-13 21:14:24,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1348 transitions. [2019-10-13 21:14:24,014 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1348 transitions. Word has length 156 [2019-10-13 21:14:24,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:24,014 INFO L462 AbstractCegarLoop]: Abstraction has 964 states and 1348 transitions. [2019-10-13 21:14:24,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:14:24,014 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1348 transitions. [2019-10-13 21:14:24,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-13 21:14:24,018 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:24,018 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:24,018 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:24,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:24,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1475896574, now seen corresponding path program 2 times [2019-10-13 21:14:24,019 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:24,019 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943033610] [2019-10-13 21:14:24,019 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:24,020 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:24,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-13 21:14:24,560 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943033610] [2019-10-13 21:14:24,560 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:24,561 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2019-10-13 21:14:24,561 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249017264] [2019-10-13 21:14:24,562 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-13 21:14:24,566 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:24,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-13 21:14:24,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:14:24,567 INFO L87 Difference]: Start difference. First operand 964 states and 1348 transitions. Second operand 23 states. [2019-10-13 21:14:30,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:30,571 INFO L93 Difference]: Finished difference Result 3840 states and 5359 transitions. [2019-10-13 21:14:30,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-10-13 21:14:30,572 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 156 [2019-10-13 21:14:30,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:30,592 INFO L225 Difference]: With dead ends: 3840 [2019-10-13 21:14:30,592 INFO L226 Difference]: Without dead ends: 3447 [2019-10-13 21:14:30,597 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1613 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=726, Invalid=5436, Unknown=0, NotChecked=0, Total=6162 [2019-10-13 21:14:30,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2019-10-13 21:14:30,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2519. [2019-10-13 21:14:30,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2519 states. [2019-10-13 21:14:30,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3560 transitions. [2019-10-13 21:14:30,792 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3560 transitions. Word has length 156 [2019-10-13 21:14:30,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:30,793 INFO L462 AbstractCegarLoop]: Abstraction has 2519 states and 3560 transitions. [2019-10-13 21:14:30,793 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-13 21:14:30,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3560 transitions. [2019-10-13 21:14:30,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 21:14:30,809 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:30,810 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:30,810 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:30,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:30,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1644365759, now seen corresponding path program 2 times [2019-10-13 21:14:30,811 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:30,812 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838037328] [2019-10-13 21:14:30,812 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:30,812 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:30,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:31,026 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-13 21:14:31,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838037328] [2019-10-13 21:14:31,027 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:31,028 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:14:31,028 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129710086] [2019-10-13 21:14:31,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:14:31,029 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:31,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:14:31,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:14:31,031 INFO L87 Difference]: Start difference. First operand 2519 states and 3560 transitions. Second operand 7 states. [2019-10-13 21:14:31,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:31,324 INFO L93 Difference]: Finished difference Result 2834 states and 3967 transitions. [2019-10-13 21:14:31,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:14:31,325 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2019-10-13 21:14:31,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:31,330 INFO L225 Difference]: With dead ends: 2834 [2019-10-13 21:14:31,331 INFO L226 Difference]: Without dead ends: 966 [2019-10-13 21:14:31,337 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:14:31,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2019-10-13 21:14:31,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 964. [2019-10-13 21:14:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2019-10-13 21:14:31,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1347 transitions. [2019-10-13 21:14:31,392 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1347 transitions. Word has length 157 [2019-10-13 21:14:31,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:31,393 INFO L462 AbstractCegarLoop]: Abstraction has 964 states and 1347 transitions. [2019-10-13 21:14:31,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:14:31,393 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1347 transitions. [2019-10-13 21:14:31,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 21:14:31,397 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:31,397 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:31,397 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:31,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:31,398 INFO L82 PathProgramCache]: Analyzing trace with hash -694323250, now seen corresponding path program 3 times [2019-10-13 21:14:31,398 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:31,398 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344523416] [2019-10-13 21:14:31,398 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:31,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:31,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-13 21:14:31,929 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344523416] [2019-10-13 21:14:31,929 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:31,930 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2019-10-13 21:14:31,930 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324821041] [2019-10-13 21:14:31,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-10-13 21:14:31,931 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:31,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-10-13 21:14:31,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:14:31,931 INFO L87 Difference]: Start difference. First operand 964 states and 1347 transitions. Second operand 25 states.