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_spec7_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:17:51,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:17:51,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:17:51,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:17:51,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:17:51,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:17:51,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:17:51,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:17:51,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:17:51,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:17:51,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:17:51,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:17:51,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:17:51,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:17:51,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:17:51,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:17:51,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:17:51,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:17:51,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:17:51,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:17:51,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:17:51,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:17:51,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:17:51,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:17:51,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:17:51,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:17:51,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:17:51,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:17:51,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:17:51,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:17:51,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:17:51,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:17:51,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:17:51,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:17:51,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:17:51,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:17:51,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:17:51,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:17:51,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:17:51,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:17:51,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:17:51,247 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 21:17:51,265 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:17:51,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:17:51,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:17:51,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:17:51,269 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:17:51,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:17:51,270 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:17:51,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:17:51,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:17:51,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:17:51,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:17:51,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:17:51,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:17:51,272 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:17:51,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:17:51,273 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:17:51,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:17:51,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:17:51,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:17:51,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:17:51,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:17:51,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:17:51,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:17:51,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:17:51,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:17:51,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:17:51,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:17:51,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:17:51,275 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 21:17:51,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:17:51,590 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:17:51,593 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:17:51,594 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:17:51,595 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:17:51,595 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product30.cil.c [2019-10-13 21:17:51,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ea4d881a/e791ae05e78a4d0b84bb3a3d0ef60ba3/FLAGfa1d1d94a [2019-10-13 21:17:52,287 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:17:52,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product30.cil.c [2019-10-13 21:17:52,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ea4d881a/e791ae05e78a4d0b84bb3a3d0ef60ba3/FLAGfa1d1d94a [2019-10-13 21:17:52,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ea4d881a/e791ae05e78a4d0b84bb3a3d0ef60ba3 [2019-10-13 21:17:52,511 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:17:52,513 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:17:52,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:17:52,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:17:52,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:17:52,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:17:52" (1/1) ... [2019-10-13 21:17:52,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ef0aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:52, skipping insertion in model container [2019-10-13 21:17:52,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:17:52" (1/1) ... [2019-10-13 21:17:52,529 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:17:52,605 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:17:53,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:17:53,321 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:17:53,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:17:53,557 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:17:53,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:53 WrapperNode [2019-10-13 21:17:53,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:17:53,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:17:53,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:17:53,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:17:53,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:53" (1/1) ... [2019-10-13 21:17:53,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:53" (1/1) ... [2019-10-13 21:17:53,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:53" (1/1) ... [2019-10-13 21:17:53,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:53" (1/1) ... [2019-10-13 21:17:53,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:53" (1/1) ... [2019-10-13 21:17:53,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:53" (1/1) ... [2019-10-13 21:17:53,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:53" (1/1) ... [2019-10-13 21:17:53,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:17:53,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:17:53,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:17:53,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:17:53,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:53" (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 21:17:53,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:17:53,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:17:53,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:17:53,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:17:53,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:17:53,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:17:53,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:17:53,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:17:53,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:17:53,841 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:17:53,841 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:17:53,841 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:17:53,841 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:17:53,842 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:17:53,842 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:17:53,842 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:17:53,842 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:17:53,843 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:17:53,843 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:17:53,843 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:17:53,843 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:17:53,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:17:53,844 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:17:53,844 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:17:53,844 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:17:53,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:17:53,845 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:17:53,845 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:17:53,845 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:17:53,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:17:53,845 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:17:53,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptVerify_spec__1 [2019-10-13 21:17:53,846 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:17:53,846 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:17:53,846 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:17:53,846 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:17:53,846 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:17:53,847 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:17:53,847 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:17:53,847 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:17:53,847 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:17:53,847 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:17:53,847 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:17:53,848 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:17:53,848 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:17:53,848 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:17:53,848 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:17:53,848 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:17:53,848 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:17:53,848 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:17:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:17:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:17:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:17:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:17:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:17:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:17:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:17:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:17:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:17:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:17:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:17:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:17:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:17:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:17:53,851 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:17:53,851 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:17:53,851 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:17:53,851 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:17:53,851 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:17:53,851 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:17:53,851 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:17:53,852 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:17:53,852 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:17:53,852 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:17:53,852 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:17:53,852 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:17:53,852 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:17:53,853 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:17:53,853 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:17:53,853 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:17:53,853 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:17:53,853 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:17:53,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:17:53,853 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:17:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:17:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:17:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:17:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:17:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-13 21:17:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:17:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:17:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:17:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:17:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:17:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:17:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:17:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:17:53,856 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:17:53,856 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:17:53,856 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:17:53,856 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:17:53,856 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:17:53,856 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:17:53,856 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:17:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:17:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:17:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:17:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:17:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:17:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:17:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:17:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:17:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:17:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:17:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:17:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:17:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:17:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:17:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:17:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:17:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:17:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:17:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:17:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:17:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:17:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:17:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:17:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:17:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:17:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:17:53,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:17:53,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:17:53,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:17:53,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:17:53,861 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:17:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:17:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:17:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:17:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:17:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:17:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:17:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:17:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:17:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:17:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:17:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:17:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:17:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:17:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:17:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:17:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:17:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:17:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:17:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:17:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:17:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:17:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:17:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:17:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:17:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:17:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:17:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:17:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:17:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:17:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:17:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:17:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:17:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptVerify_spec__1 [2019-10-13 21:17:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:17:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:17:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:17:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:17:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:17:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:17:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:17:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:17:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:17:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:17:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:17:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:17:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:17:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:17:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:17:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:17:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:17:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:17:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:17:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:17:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:17:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:17:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:17:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:17:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:17:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:17:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:17:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:17:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:17:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:17:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:17:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:17:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:17:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:17:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:17:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:17:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:17:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:17:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:17:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:17:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:17:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:17:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:17:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:17:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:17:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:17:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:17:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:17:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:17:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:17:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:17:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:17:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:17:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:17:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:17:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:17:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:17:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:17:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:17:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:17:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-13 21:17:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:17:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:17:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:17:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:17:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:17:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:17:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:17:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:17:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:17:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:17:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:17:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:17:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:17:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:17:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:17:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:17:56,072 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:17:56,073 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:17:56,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:17:56 BoogieIcfgContainer [2019-10-13 21:17:56,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:17:56,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:17:56,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:17:56,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:17:56,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:17:52" (1/3) ... [2019-10-13 21:17:56,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539e542b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:17:56, skipping insertion in model container [2019-10-13 21:17:56,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:53" (2/3) ... [2019-10-13 21:17:56,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539e542b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:17:56, skipping insertion in model container [2019-10-13 21:17:56,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:17:56" (3/3) ... [2019-10-13 21:17:56,086 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec7_product30.cil.c [2019-10-13 21:17:56,096 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:17:56,110 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:17:56,121 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:17:56,170 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:17:56,170 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:17:56,170 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:17:56,171 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:17:56,173 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:17:56,174 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:17:56,174 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:17:56,175 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:17:56,213 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states. [2019-10-13 21:17:56,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-13 21:17:56,248 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:56,257 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:56,259 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:56,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:56,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1131064280, now seen corresponding path program 1 times [2019-10-13 21:17:56,279 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:56,280 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358273039] [2019-10-13 21:17:56,281 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:56,281 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:56,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:17:56,971 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358273039] [2019-10-13 21:17:56,972 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:56,972 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:17:56,972 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43870726] [2019-10-13 21:17:56,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:17:56,982 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:56,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:17:56,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:17:57,000 INFO L87 Difference]: Start difference. First operand 540 states. Second operand 2 states. [2019-10-13 21:17:57,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:57,120 INFO L93 Difference]: Finished difference Result 766 states and 1013 transitions. [2019-10-13 21:17:57,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:17:57,122 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 182 [2019-10-13 21:17:57,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:57,162 INFO L225 Difference]: With dead ends: 766 [2019-10-13 21:17:57,162 INFO L226 Difference]: Without dead ends: 489 [2019-10-13 21:17:57,174 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 21:17:57,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2019-10-13 21:17:57,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2019-10-13 21:17:57,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2019-10-13 21:17:57,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 649 transitions. [2019-10-13 21:17:57,269 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 649 transitions. Word has length 182 [2019-10-13 21:17:57,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:57,272 INFO L462 AbstractCegarLoop]: Abstraction has 489 states and 649 transitions. [2019-10-13 21:17:57,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:17:57,272 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 649 transitions. [2019-10-13 21:17:57,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-13 21:17:57,279 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:57,279 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:57,279 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:57,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:57,280 INFO L82 PathProgramCache]: Analyzing trace with hash -2140358730, now seen corresponding path program 1 times [2019-10-13 21:17:57,282 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:57,282 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360598543] [2019-10-13 21:17:57,283 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:57,283 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:57,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:17:57,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360598543] [2019-10-13 21:17:57,498 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:57,498 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:57,498 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58274331] [2019-10-13 21:17:57,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:57,501 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:57,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:57,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:57,502 INFO L87 Difference]: Start difference. First operand 489 states and 649 transitions. Second operand 3 states. [2019-10-13 21:17:57,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:57,596 INFO L93 Difference]: Finished difference Result 749 states and 978 transitions. [2019-10-13 21:17:57,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:57,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2019-10-13 21:17:57,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:57,602 INFO L225 Difference]: With dead ends: 749 [2019-10-13 21:17:57,602 INFO L226 Difference]: Without dead ends: 492 [2019-10-13 21:17:57,604 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 21:17:57,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-10-13 21:17:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2019-10-13 21:17:57,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2019-10-13 21:17:57,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 651 transitions. [2019-10-13 21:17:57,646 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 651 transitions. Word has length 183 [2019-10-13 21:17:57,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:57,647 INFO L462 AbstractCegarLoop]: Abstraction has 491 states and 651 transitions. [2019-10-13 21:17:57,647 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:57,647 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 651 transitions. [2019-10-13 21:17:57,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-13 21:17:57,651 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:57,652 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:57,652 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:57,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:57,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1496766790, now seen corresponding path program 1 times [2019-10-13 21:17:57,653 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:57,653 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707096145] [2019-10-13 21:17:57,653 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:57,653 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:57,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:57,982 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:17:57,982 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707096145] [2019-10-13 21:17:57,983 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:57,983 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:57,983 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953916148] [2019-10-13 21:17:57,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:57,988 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:57,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:57,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:57,988 INFO L87 Difference]: Start difference. First operand 491 states and 651 transitions. Second operand 3 states. [2019-10-13 21:17:58,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:58,038 INFO L93 Difference]: Finished difference Result 958 states and 1300 transitions. [2019-10-13 21:17:58,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:58,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-10-13 21:17:58,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:58,045 INFO L225 Difference]: With dead ends: 958 [2019-10-13 21:17:58,045 INFO L226 Difference]: Without dead ends: 532 [2019-10-13 21:17:58,047 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 21:17:58,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2019-10-13 21:17:58,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 531. [2019-10-13 21:17:58,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2019-10-13 21:17:58,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 720 transitions. [2019-10-13 21:17:58,096 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 720 transitions. Word has length 193 [2019-10-13 21:17:58,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:58,097 INFO L462 AbstractCegarLoop]: Abstraction has 531 states and 720 transitions. [2019-10-13 21:17:58,098 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:58,098 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 720 transitions. [2019-10-13 21:17:58,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-13 21:17:58,107 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:58,107 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:58,107 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:58,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:58,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1227376246, now seen corresponding path program 1 times [2019-10-13 21:17:58,113 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:58,113 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042908896] [2019-10-13 21:17:58,113 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:58,114 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:58,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:17:58,273 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042908896] [2019-10-13 21:17:58,273 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:58,274 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:58,274 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064297530] [2019-10-13 21:17:58,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:58,275 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:58,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:58,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:58,276 INFO L87 Difference]: Start difference. First operand 531 states and 720 transitions. Second operand 3 states. [2019-10-13 21:17:58,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:58,325 INFO L93 Difference]: Finished difference Result 1075 states and 1502 transitions. [2019-10-13 21:17:58,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:58,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2019-10-13 21:17:58,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:58,331 INFO L225 Difference]: With dead ends: 1075 [2019-10-13 21:17:58,332 INFO L226 Difference]: Without dead ends: 609 [2019-10-13 21:17:58,334 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 21:17:58,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2019-10-13 21:17:58,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 608. [2019-10-13 21:17:58,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-10-13 21:17:58,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 852 transitions. [2019-10-13 21:17:58,374 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 852 transitions. Word has length 194 [2019-10-13 21:17:58,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:58,375 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 852 transitions. [2019-10-13 21:17:58,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:58,375 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 852 transitions. [2019-10-13 21:17:58,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-13 21:17:58,383 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:58,383 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:58,384 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:58,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:58,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1776385894, now seen corresponding path program 1 times [2019-10-13 21:17:58,385 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:58,385 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320538648] [2019-10-13 21:17:58,386 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:58,386 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:58,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:58,742 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:17:58,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320538648] [2019-10-13 21:17:58,743 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:58,744 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:58,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058973062] [2019-10-13 21:17:58,745 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:58,745 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:58,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:58,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:58,747 INFO L87 Difference]: Start difference. First operand 608 states and 852 transitions. Second operand 3 states. [2019-10-13 21:17:58,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:58,789 INFO L93 Difference]: Finished difference Result 1300 states and 1888 transitions. [2019-10-13 21:17:58,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:58,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2019-10-13 21:17:58,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:58,796 INFO L225 Difference]: With dead ends: 1300 [2019-10-13 21:17:58,796 INFO L226 Difference]: Without dead ends: 757 [2019-10-13 21:17:58,798 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 21:17:58,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2019-10-13 21:17:58,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 756. [2019-10-13 21:17:58,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2019-10-13 21:17:58,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1104 transitions. [2019-10-13 21:17:58,841 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1104 transitions. Word has length 195 [2019-10-13 21:17:58,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:58,842 INFO L462 AbstractCegarLoop]: Abstraction has 756 states and 1104 transitions. [2019-10-13 21:17:58,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:58,842 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1104 transitions. [2019-10-13 21:17:58,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-13 21:17:58,846 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:58,847 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:58,847 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:58,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:58,848 INFO L82 PathProgramCache]: Analyzing trace with hash -2040028310, now seen corresponding path program 1 times [2019-10-13 21:17:58,848 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:58,848 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218243361] [2019-10-13 21:17:58,848 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:58,848 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:58,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:59,007 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:17:59,007 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218243361] [2019-10-13 21:17:59,008 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:59,008 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:59,009 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57250279] [2019-10-13 21:17:59,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:59,009 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:59,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:59,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:59,010 INFO L87 Difference]: Start difference. First operand 756 states and 1104 transitions. Second operand 3 states. [2019-10-13 21:17:59,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:59,112 INFO L93 Difference]: Finished difference Result 1732 states and 2624 transitions. [2019-10-13 21:17:59,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:59,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-10-13 21:17:59,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:59,119 INFO L225 Difference]: With dead ends: 1732 [2019-10-13 21:17:59,119 INFO L226 Difference]: Without dead ends: 1041 [2019-10-13 21:17:59,121 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 21:17:59,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2019-10-13 21:17:59,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1040. [2019-10-13 21:17:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2019-10-13 21:17:59,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1584 transitions. [2019-10-13 21:17:59,167 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1584 transitions. Word has length 196 [2019-10-13 21:17:59,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:59,168 INFO L462 AbstractCegarLoop]: Abstraction has 1040 states and 1584 transitions. [2019-10-13 21:17:59,168 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:59,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1584 transitions. [2019-10-13 21:17:59,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-10-13 21:17:59,174 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:59,175 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:59,175 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:59,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:59,175 INFO L82 PathProgramCache]: Analyzing trace with hash 662668678, now seen corresponding path program 1 times [2019-10-13 21:17:59,176 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:59,176 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294776567] [2019-10-13 21:17:59,176 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:59,176 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:59,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:17:59,312 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294776567] [2019-10-13 21:17:59,313 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:59,313 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:59,313 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484325788] [2019-10-13 21:17:59,314 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:59,314 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:59,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:59,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:59,315 INFO L87 Difference]: Start difference. First operand 1040 states and 1584 transitions. Second operand 3 states. [2019-10-13 21:17:59,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:59,384 INFO L93 Difference]: Finished difference Result 2560 states and 4024 transitions. [2019-10-13 21:17:59,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:59,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2019-10-13 21:17:59,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:59,397 INFO L225 Difference]: With dead ends: 2560 [2019-10-13 21:17:59,397 INFO L226 Difference]: Without dead ends: 1585 [2019-10-13 21:17:59,402 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:59,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2019-10-13 21:17:59,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1584. [2019-10-13 21:17:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2019-10-13 21:17:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2496 transitions. [2019-10-13 21:17:59,495 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2496 transitions. Word has length 197 [2019-10-13 21:17:59,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:59,496 INFO L462 AbstractCegarLoop]: Abstraction has 1584 states and 2496 transitions. [2019-10-13 21:17:59,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2496 transitions. [2019-10-13 21:17:59,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-10-13 21:17:59,508 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:59,509 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:59,509 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:59,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:59,510 INFO L82 PathProgramCache]: Analyzing trace with hash 2098370244, now seen corresponding path program 1 times [2019-10-13 21:17:59,510 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:59,511 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117380989] [2019-10-13 21:17:59,511 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:59,511 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:59,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:00,003 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-13 21:18:00,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117380989] [2019-10-13 21:18:00,004 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:00,004 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-13 21:18:00,004 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573834573] [2019-10-13 21:18:00,005 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 21:18:00,005 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:00,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 21:18:00,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:18:00,007 INFO L87 Difference]: Start difference. First operand 1584 states and 2496 transitions. Second operand 19 states. [2019-10-13 21:18:04,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:04,310 INFO L93 Difference]: Finished difference Result 3933 states and 6147 transitions. [2019-10-13 21:18:04,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-13 21:18:04,310 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 199 [2019-10-13 21:18:04,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:04,341 INFO L225 Difference]: With dead ends: 3933 [2019-10-13 21:18:04,341 INFO L226 Difference]: Without dead ends: 3689 [2019-10-13 21:18:04,345 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-10-13 21:18:04,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3689 states. [2019-10-13 21:18:04,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3689 to 3652. [2019-10-13 21:18:04,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3652 states. [2019-10-13 21:18:04,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 5771 transitions. [2019-10-13 21:18:04,564 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 5771 transitions. Word has length 199 [2019-10-13 21:18:04,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:04,564 INFO L462 AbstractCegarLoop]: Abstraction has 3652 states and 5771 transitions. [2019-10-13 21:18:04,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-13 21:18:04,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 5771 transitions. [2019-10-13 21:18:04,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-13 21:18:04,602 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:04,602 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:04,603 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:04,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:04,603 INFO L82 PathProgramCache]: Analyzing trace with hash 2086662794, now seen corresponding path program 1 times [2019-10-13 21:18:04,603 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:04,604 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788533040] [2019-10-13 21:18:04,604 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:04,604 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:04,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:04,941 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-13 21:18:04,942 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788533040] [2019-10-13 21:18:04,944 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:04,944 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-13 21:18:04,944 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083074091] [2019-10-13 21:18:04,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:18:04,946 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:04,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:18:04,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:18:04,947 INFO L87 Difference]: Start difference. First operand 3652 states and 5771 transitions. Second operand 15 states. [2019-10-13 21:18:08,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:08,736 INFO L93 Difference]: Finished difference Result 4781 states and 7296 transitions. [2019-10-13 21:18:08,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-10-13 21:18:08,738 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 200 [2019-10-13 21:18:08,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:08,761 INFO L225 Difference]: With dead ends: 4781 [2019-10-13 21:18:08,761 INFO L226 Difference]: Without dead ends: 3754 [2019-10-13 21:18:08,765 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-10-13 21:18:08,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2019-10-13 21:18:08,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3722. [2019-10-13 21:18:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3722 states. [2019-10-13 21:18:08,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5883 transitions. [2019-10-13 21:18:08,953 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5883 transitions. Word has length 200 [2019-10-13 21:18:08,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:08,954 INFO L462 AbstractCegarLoop]: Abstraction has 3722 states and 5883 transitions. [2019-10-13 21:18:08,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:18:08,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5883 transitions. [2019-10-13 21:18:08,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-13 21:18:08,971 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:08,972 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:08,972 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:08,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:08,973 INFO L82 PathProgramCache]: Analyzing trace with hash -159485995, now seen corresponding path program 1 times [2019-10-13 21:18:08,973 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:08,973 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625448217] [2019-10-13 21:18:08,973 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:08,973 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:08,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:09,111 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:18:09,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625448217] [2019-10-13 21:18:09,111 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:09,112 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:18:09,112 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640883780] [2019-10-13 21:18:09,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:18:09,113 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:09,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:18:09,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:18:09,113 INFO L87 Difference]: Start difference. First operand 3722 states and 5883 transitions. Second operand 5 states. [2019-10-13 21:18:09,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:09,256 INFO L93 Difference]: Finished difference Result 4540 states and 6954 transitions. [2019-10-13 21:18:09,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:18:09,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2019-10-13 21:18:09,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:09,281 INFO L225 Difference]: With dead ends: 4540 [2019-10-13 21:18:09,281 INFO L226 Difference]: Without dead ends: 3428 [2019-10-13 21:18:09,287 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:18:09,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2019-10-13 21:18:09,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 3428. [2019-10-13 21:18:09,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3428 states. [2019-10-13 21:18:09,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 5479 transitions. [2019-10-13 21:18:09,446 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 5479 transitions. Word has length 203 [2019-10-13 21:18:09,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:09,446 INFO L462 AbstractCegarLoop]: Abstraction has 3428 states and 5479 transitions. [2019-10-13 21:18:09,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:18:09,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 5479 transitions. [2019-10-13 21:18:09,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-13 21:18:09,465 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:09,465 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:09,465 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:09,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:09,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1989327825, now seen corresponding path program 1 times [2019-10-13 21:18:09,466 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:09,466 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164854407] [2019-10-13 21:18:09,467 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:09,467 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:09,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-13 21:18:09,877 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164854407] [2019-10-13 21:18:09,877 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:09,877 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-13 21:18:09,878 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617764145] [2019-10-13 21:18:09,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:18:09,880 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:09,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:18:09,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:18:09,881 INFO L87 Difference]: Start difference. First operand 3428 states and 5479 transitions. Second operand 16 states. [2019-10-13 21:18:10,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:10,256 INFO L93 Difference]: Finished difference Result 4318 states and 6665 transitions. [2019-10-13 21:18:10,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:18:10,257 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 200 [2019-10-13 21:18:10,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:10,280 INFO L225 Difference]: With dead ends: 4318 [2019-10-13 21:18:10,280 INFO L226 Difference]: Without dead ends: 3480 [2019-10-13 21:18:10,285 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:18:10,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2019-10-13 21:18:10,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3462. [2019-10-13 21:18:10,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3462 states. [2019-10-13 21:18:10,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 5522 transitions. [2019-10-13 21:18:10,440 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 5522 transitions. Word has length 200 [2019-10-13 21:18:10,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:10,441 INFO L462 AbstractCegarLoop]: Abstraction has 3462 states and 5522 transitions. [2019-10-13 21:18:10,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:18:10,441 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 5522 transitions. [2019-10-13 21:18:10,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-13 21:18:10,458 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:10,458 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:10,459 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:10,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:10,459 INFO L82 PathProgramCache]: Analyzing trace with hash 22885179, now seen corresponding path program 1 times [2019-10-13 21:18:10,460 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:10,460 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729518889] [2019-10-13 21:18:10,460 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:10,460 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:10,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:18:10,605 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729518889] [2019-10-13 21:18:10,605 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:10,605 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:18:10,605 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616303226] [2019-10-13 21:18:10,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:18:10,606 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:10,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:18:10,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:18:10,607 INFO L87 Difference]: Start difference. First operand 3462 states and 5522 transitions. Second operand 5 states. [2019-10-13 21:18:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:11,680 INFO L93 Difference]: Finished difference Result 6692 states and 10472 transitions. [2019-10-13 21:18:11,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:18:11,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2019-10-13 21:18:11,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:11,726 INFO L225 Difference]: With dead ends: 6692 [2019-10-13 21:18:11,726 INFO L226 Difference]: Without dead ends: 6123 [2019-10-13 21:18:11,733 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 21:18:11,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6123 states. [2019-10-13 21:18:12,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6123 to 6092. [2019-10-13 21:18:12,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6092 states. [2019-10-13 21:18:12,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6092 states to 6092 states and 9655 transitions. [2019-10-13 21:18:12,051 INFO L78 Accepts]: Start accepts. Automaton has 6092 states and 9655 transitions. Word has length 200 [2019-10-13 21:18:12,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:12,052 INFO L462 AbstractCegarLoop]: Abstraction has 6092 states and 9655 transitions. [2019-10-13 21:18:12,052 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:18:12,052 INFO L276 IsEmpty]: Start isEmpty. Operand 6092 states and 9655 transitions. [2019-10-13 21:18:12,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-13 21:18:12,077 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:12,077 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:12,078 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:12,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:12,078 INFO L82 PathProgramCache]: Analyzing trace with hash 43222554, now seen corresponding path program 1 times [2019-10-13 21:18:12,078 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:12,078 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882514140] [2019-10-13 21:18:12,079 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:12,079 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:12,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:18:12,247 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882514140] [2019-10-13 21:18:12,247 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:12,248 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:18:12,248 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216811396] [2019-10-13 21:18:12,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:18:12,249 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:12,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:18:12,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:18:12,249 INFO L87 Difference]: Start difference. First operand 6092 states and 9655 transitions. Second operand 7 states. [2019-10-13 21:18:14,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:14,102 INFO L93 Difference]: Finished difference Result 12518 states and 18483 transitions. [2019-10-13 21:18:14,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 21:18:14,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2019-10-13 21:18:14,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:14,155 INFO L225 Difference]: With dead ends: 12518 [2019-10-13 21:18:14,155 INFO L226 Difference]: Without dead ends: 10442 [2019-10-13 21:18:14,168 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:18:14,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10442 states. [2019-10-13 21:18:14,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10442 to 10420. [2019-10-13 21:18:14,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10420 states. [2019-10-13 21:18:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10420 states to 10420 states and 15548 transitions. [2019-10-13 21:18:14,586 INFO L78 Accepts]: Start accepts. Automaton has 10420 states and 15548 transitions. Word has length 200 [2019-10-13 21:18:14,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:14,587 INFO L462 AbstractCegarLoop]: Abstraction has 10420 states and 15548 transitions. [2019-10-13 21:18:14,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:18:14,587 INFO L276 IsEmpty]: Start isEmpty. Operand 10420 states and 15548 transitions. [2019-10-13 21:18:14,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-13 21:18:14,620 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:14,620 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:14,621 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:14,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:14,621 INFO L82 PathProgramCache]: Analyzing trace with hash 16236281, now seen corresponding path program 1 times [2019-10-13 21:18:14,622 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:14,622 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713928736] [2019-10-13 21:18:14,622 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:14,622 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:14,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:18:15,073 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713928736] [2019-10-13 21:18:15,074 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:15,074 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-13 21:18:15,074 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611593429] [2019-10-13 21:18:15,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 21:18:15,075 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:15,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 21:18:15,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2019-10-13 21:18:15,075 INFO L87 Difference]: Start difference. First operand 10420 states and 15548 transitions. Second operand 26 states. [2019-10-13 21:18:16,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:16,159 INFO L93 Difference]: Finished difference Result 17040 states and 24717 transitions. [2019-10-13 21:18:16,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-13 21:18:16,159 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 201 [2019-10-13 21:18:16,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:16,201 INFO L225 Difference]: With dead ends: 17040 [2019-10-13 21:18:16,201 INFO L226 Difference]: Without dead ends: 9548 [2019-10-13 21:18:16,228 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:18:16,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9548 states. [2019-10-13 21:18:16,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9548 to 9415. [2019-10-13 21:18:16,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9415 states. [2019-10-13 21:18:16,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9415 states to 9415 states and 14191 transitions. [2019-10-13 21:18:16,612 INFO L78 Accepts]: Start accepts. Automaton has 9415 states and 14191 transitions. Word has length 201 [2019-10-13 21:18:16,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:16,612 INFO L462 AbstractCegarLoop]: Abstraction has 9415 states and 14191 transitions. [2019-10-13 21:18:16,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 21:18:16,613 INFO L276 IsEmpty]: Start isEmpty. Operand 9415 states and 14191 transitions. [2019-10-13 21:18:16,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-13 21:18:16,646 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:16,646 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:16,647 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:16,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:16,647 INFO L82 PathProgramCache]: Analyzing trace with hash -953853226, now seen corresponding path program 1 times [2019-10-13 21:18:16,647 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:16,648 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967036853] [2019-10-13 21:18:16,648 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:16,648 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:16,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:18:16,845 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967036853] [2019-10-13 21:18:16,845 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:16,845 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 21:18:16,846 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144836830] [2019-10-13 21:18:16,846 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:18:16,846 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:16,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:18:16,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:18:16,847 INFO L87 Difference]: Start difference. First operand 9415 states and 14191 transitions. Second operand 10 states. [2019-10-13 21:18:17,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:17,003 INFO L93 Difference]: Finished difference Result 9468 states and 14257 transitions. [2019-10-13 21:18:17,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:18:17,004 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 205 [2019-10-13 21:18:17,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:17,044 INFO L225 Difference]: With dead ends: 9468 [2019-10-13 21:18:17,044 INFO L226 Difference]: Without dead ends: 9385 [2019-10-13 21:18:17,052 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:18:17,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9385 states. [2019-10-13 21:18:17,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9385 to 9381. [2019-10-13 21:18:17,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9381 states. [2019-10-13 21:18:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9381 states to 9381 states and 14121 transitions. [2019-10-13 21:18:17,976 INFO L78 Accepts]: Start accepts. Automaton has 9381 states and 14121 transitions. Word has length 205 [2019-10-13 21:18:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:17,976 INFO L462 AbstractCegarLoop]: Abstraction has 9381 states and 14121 transitions. [2019-10-13 21:18:17,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:18:17,977 INFO L276 IsEmpty]: Start isEmpty. Operand 9381 states and 14121 transitions. [2019-10-13 21:18:17,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2019-10-13 21:18:17,996 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:17,996 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:17,997 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:17,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:17,997 INFO L82 PathProgramCache]: Analyzing trace with hash -979270205, now seen corresponding path program 1 times [2019-10-13 21:18:17,997 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:17,997 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440876670] [2019-10-13 21:18:17,998 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:17,998 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:17,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:18,151 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:18:18,156 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440876670] [2019-10-13 21:18:18,158 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:18,158 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:18:18,158 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806374736] [2019-10-13 21:18:18,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:18:18,159 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:18,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:18:18,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:18:18,159 INFO L87 Difference]: Start difference. First operand 9381 states and 14121 transitions. Second operand 5 states. [2019-10-13 21:18:18,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:18,364 INFO L93 Difference]: Finished difference Result 13693 states and 19771 transitions. [2019-10-13 21:18:18,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:18:18,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2019-10-13 21:18:18,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:18,405 INFO L225 Difference]: With dead ends: 13693 [2019-10-13 21:18:18,405 INFO L226 Difference]: Without dead ends: 9530 [2019-10-13 21:18:18,419 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:18:18,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9530 states. [2019-10-13 21:18:18,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9530 to 9463. [2019-10-13 21:18:18,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9463 states. [2019-10-13 21:18:18,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9463 states to 9463 states and 14226 transitions. [2019-10-13 21:18:18,749 INFO L78 Accepts]: Start accepts. Automaton has 9463 states and 14226 transitions. Word has length 210 [2019-10-13 21:18:18,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:18,750 INFO L462 AbstractCegarLoop]: Abstraction has 9463 states and 14226 transitions. [2019-10-13 21:18:18,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:18:18,750 INFO L276 IsEmpty]: Start isEmpty. Operand 9463 states and 14226 transitions. [2019-10-13 21:18:18,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2019-10-13 21:18:18,760 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:18,760 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:18,760 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:18,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:18,761 INFO L82 PathProgramCache]: Analyzing trace with hash 181926907, now seen corresponding path program 1 times [2019-10-13 21:18:18,761 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:18,761 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188106583] [2019-10-13 21:18:18,761 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:18,761 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:18,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:18:18,956 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188106583] [2019-10-13 21:18:18,957 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:18,957 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:18:18,957 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059493632] [2019-10-13 21:18:18,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:18:18,958 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:18,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:18:18,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:18:18,959 INFO L87 Difference]: Start difference. First operand 9463 states and 14226 transitions. Second operand 11 states. [2019-10-13 21:18:19,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:19,499 INFO L93 Difference]: Finished difference Result 13676 states and 19698 transitions. [2019-10-13 21:18:19,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:18:19,499 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 210 [2019-10-13 21:18:19,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:19,535 INFO L225 Difference]: With dead ends: 13676 [2019-10-13 21:18:19,535 INFO L226 Difference]: Without dead ends: 9461 [2019-10-13 21:18:19,550 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:18:19,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9461 states. [2019-10-13 21:18:19,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9461 to 9425. [2019-10-13 21:18:19,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9425 states. [2019-10-13 21:18:19,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9425 states to 9425 states and 14144 transitions. [2019-10-13 21:18:19,919 INFO L78 Accepts]: Start accepts. Automaton has 9425 states and 14144 transitions. Word has length 210 [2019-10-13 21:18:19,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:19,920 INFO L462 AbstractCegarLoop]: Abstraction has 9425 states and 14144 transitions. [2019-10-13 21:18:19,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:18:19,920 INFO L276 IsEmpty]: Start isEmpty. Operand 9425 states and 14144 transitions. [2019-10-13 21:18:19,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-10-13 21:18:19,938 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:19,938 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:19,938 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:19,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:19,939 INFO L82 PathProgramCache]: Analyzing trace with hash 370927849, now seen corresponding path program 1 times [2019-10-13 21:18:19,939 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:19,939 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065550544] [2019-10-13 21:18:19,939 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:19,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:19,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:20,089 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:18:20,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065550544] [2019-10-13 21:18:20,090 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:20,090 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:18:20,090 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026188671] [2019-10-13 21:18:20,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:18:20,091 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:20,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:18:20,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:18:20,092 INFO L87 Difference]: Start difference. First operand 9425 states and 14144 transitions. Second operand 6 states. [2019-10-13 21:18:21,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:21,091 INFO L93 Difference]: Finished difference Result 23626 states and 35165 transitions. [2019-10-13 21:18:21,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:18:21,092 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2019-10-13 21:18:21,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:21,151 INFO L225 Difference]: With dead ends: 23626 [2019-10-13 21:18:21,151 INFO L226 Difference]: Without dead ends: 18833 [2019-10-13 21:18:21,169 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:18:21,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18833 states. [2019-10-13 21:18:21,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18833 to 18699. [2019-10-13 21:18:21,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18699 states. [2019-10-13 21:18:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18699 states to 18699 states and 28719 transitions. [2019-10-13 21:18:21,860 INFO L78 Accepts]: Start accepts. Automaton has 18699 states and 28719 transitions. Word has length 211 [2019-10-13 21:18:21,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:21,860 INFO L462 AbstractCegarLoop]: Abstraction has 18699 states and 28719 transitions. [2019-10-13 21:18:21,861 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:18:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand 18699 states and 28719 transitions. [2019-10-13 21:18:21,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-10-13 21:18:21,889 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:21,889 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:21,889 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:21,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:21,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1818811780, now seen corresponding path program 1 times [2019-10-13 21:18:21,890 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:21,890 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936009292] [2019-10-13 21:18:21,890 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:21,890 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:21,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:22,083 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:18:22,083 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936009292] [2019-10-13 21:18:22,083 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:22,083 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:18:22,084 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587601735] [2019-10-13 21:18:22,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:18:22,084 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:22,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:18:22,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:18:22,085 INFO L87 Difference]: Start difference. First operand 18699 states and 28719 transitions. Second operand 8 states.