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_spec11_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:13:38,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:13:38,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:13:38,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:13:38,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:13:38,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:13:38,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:13:38,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:13:38,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:13:38,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:13:38,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:13:38,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:13:38,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:13:38,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:13:38,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:13:38,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:13:38,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:13:38,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:13:38,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:13:38,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:13:38,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:13:38,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:13:38,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:13:38,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:13:38,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:13:38,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:13:38,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:13:38,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:13:38,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:13:38,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:13:38,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:13:38,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:13:38,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:13:38,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:13:38,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:13:38,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:13:38,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:13:38,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:13:38,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:13:38,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:13:38,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:13:38,590 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 21:13:38,628 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:13:38,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:13:38,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:13:38,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:13:38,630 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:13:38,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:13:38,630 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:13:38,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:13:38,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:13:38,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:13:38,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:13:38,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:13:38,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:13:38,631 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:13:38,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:13:38,632 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:13:38,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:13:38,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:13:38,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:13:38,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:13:38,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:13:38,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:13:38,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:13:38,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:13:38,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:13:38,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:13:38,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:13:38,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:13:38,634 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 21:13:38,952 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:13:38,966 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:13:38,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:13:38,971 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:13:38,972 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:13:38,972 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product30.cil.c [2019-10-13 21:13:39,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ace0e3a05/f453a61ca0c1450695249c09e0c714b4/FLAGa58ad0746 [2019-10-13 21:13:39,706 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:13:39,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product30.cil.c [2019-10-13 21:13:39,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ace0e3a05/f453a61ca0c1450695249c09e0c714b4/FLAGa58ad0746 [2019-10-13 21:13:39,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ace0e3a05/f453a61ca0c1450695249c09e0c714b4 [2019-10-13 21:13:39,877 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:13:39,879 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:13:39,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:13:39,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:13:39,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:13:39,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:13:39" (1/1) ... [2019-10-13 21:13:39,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19ddc21c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:39, skipping insertion in model container [2019-10-13 21:13:39,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:13:39" (1/1) ... [2019-10-13 21:13:39,894 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:13:39,971 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:13:40,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:13:40,724 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:13:40,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:13:40,970 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:13:40,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:40 WrapperNode [2019-10-13 21:13:40,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:13:40,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:13:40,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:13:40,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:13:40,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:40" (1/1) ... [2019-10-13 21:13:40,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:40" (1/1) ... [2019-10-13 21:13:41,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:40" (1/1) ... [2019-10-13 21:13:41,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:40" (1/1) ... [2019-10-13 21:13:41,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:40" (1/1) ... [2019-10-13 21:13:41,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:40" (1/1) ... [2019-10-13 21:13:41,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:40" (1/1) ... [2019-10-13 21:13:41,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:13:41,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:13:41,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:13:41,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:13:41,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:40" (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 21:13:41,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:13:41,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:13:41,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:13:41,232 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:13:41,233 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:13:41,234 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:13:41,234 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:13:41,235 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:13:41,235 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:13:41,236 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:13:41,236 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:13:41,236 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:13:41,236 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:13:41,237 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:13:41,237 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:13:41,238 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:13:41,240 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:13:41,240 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:13:41,240 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:13:41,241 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:13:41,241 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:13:41,241 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:13:41,242 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:13:41,242 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:13:41,242 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:13:41,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-10-13 21:13:41,242 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:13:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:13:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:13:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:13:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:13:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:13:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:13:41,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:13:41,244 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:13:41,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:13:41,245 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:13:41,245 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:13:41,245 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:13:41,245 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:13:41,245 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:13:41,245 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:13:41,246 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:13:41,246 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:13:41,246 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:13:41,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:13:41,246 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:13:41,247 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:13:41,247 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-13 21:13:41,247 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:13:41,247 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:13:41,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:13:41,248 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:13:41,248 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:13:41,248 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:13:41,248 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:13:41,248 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:13:41,248 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:13:41,249 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:13:41,249 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:13:41,249 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:13:41,249 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:13:41,250 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:13:41,250 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:13:41,250 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:13:41,251 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:13:41,251 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:13:41,251 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:13:41,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:13:41,251 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:13:41,251 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:13:41,252 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:13:41,252 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:13:41,253 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:13:41,253 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:13:41,253 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:13:41,253 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:13:41,253 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:13:41,254 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:13:41,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:13:41,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:13:41,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:13:41,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:13:41,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:13:41,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:13:41,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:13:41,256 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:13:41,257 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:13:41,257 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:13:41,258 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:13:41,258 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:13:41,258 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:13:41,258 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:13:41,258 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:13:41,258 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:13:41,258 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:13:41,259 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:13:41,259 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:13:41,259 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:13:41,259 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:13:41,259 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:13:41,259 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:13:41,259 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:13:41,259 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:13:41,260 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:13:41,260 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:13:41,260 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:13:41,260 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:13:41,260 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:13:41,260 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:13:41,260 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:13:41,261 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:13:41,261 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:13:41,261 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:13:41,261 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:13:41,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:13:41,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:13:41,262 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:13:41,262 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:13:41,262 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:13:41,263 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:13:41,263 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:13:41,263 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:13:41,263 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:13:41,264 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:13:41,264 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:13:41,264 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:13:41,264 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:13:41,264 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:13:41,265 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:13:41,265 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:13:41,265 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:13:41,265 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:13:41,265 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:13:41,266 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:13:41,266 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:13:41,267 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:13:41,270 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:13:41,270 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:13:41,271 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:13:41,271 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:13:41,271 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:13:41,272 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:13:41,272 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:13:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:13:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:13:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:13:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:13:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:13:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:13:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:13:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:13:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:13:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:13:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:13:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:13:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:13:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:13:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:13:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:13:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:13:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-10-13 21:13:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:13:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:13:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:13:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:13:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:13:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:13:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:13:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:13:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:13:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:13:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:13:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:13:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:13:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:13:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:13:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:13:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:13:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:13:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:13:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:13:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:13:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:13:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:13:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-13 21:13:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:13:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:13:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:13:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:13:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:13:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:13:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:13:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:13:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:13:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:13:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:13:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:13:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:13:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:13:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:13:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:13:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:13:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:13:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:13:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:13:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:13:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:13:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:13:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:13:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:13:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:13:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:13:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:13:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:13:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:13:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:13:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:13:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:13:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:13:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:13:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:13:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:13:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:13:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:13:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:13:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:13:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:13:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:13:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:13:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:13:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:13:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:13:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:13:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:13:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:13:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:13:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:13:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:13:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:13:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:13:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:13:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:13:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:13:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:13:43,348 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:13:43,349 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:13:43,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:13:43 BoogieIcfgContainer [2019-10-13 21:13:43,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:13:43,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:13:43,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:13:43,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:13:43,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:13:39" (1/3) ... [2019-10-13 21:13:43,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a32c4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:13:43, skipping insertion in model container [2019-10-13 21:13:43,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:40" (2/3) ... [2019-10-13 21:13:43,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a32c4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:13:43, skipping insertion in model container [2019-10-13 21:13:43,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:13:43" (3/3) ... [2019-10-13 21:13:43,360 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec11_product30.cil.c [2019-10-13 21:13:43,370 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:13:43,383 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:13:43,394 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:13:43,441 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:13:43,441 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:13:43,443 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:13:43,447 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:13:43,447 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:13:43,447 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:13:43,447 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:13:43,447 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:13:43,477 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states. [2019-10-13 21:13:43,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-13 21:13:43,504 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:43,506 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:43,508 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:43,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:43,513 INFO L82 PathProgramCache]: Analyzing trace with hash 235603723, now seen corresponding path program 1 times [2019-10-13 21:13:43,523 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:43,523 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373930637] [2019-10-13 21:13:43,524 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:43,524 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:43,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:44,148 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:44,149 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373930637] [2019-10-13 21:13:44,150 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:44,150 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:13:44,150 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87295000] [2019-10-13 21:13:44,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:13:44,157 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:44,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:13:44,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:13:44,174 INFO L87 Difference]: Start difference. First operand 541 states. Second operand 2 states. [2019-10-13 21:13:44,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:44,246 INFO L93 Difference]: Finished difference Result 768 states and 1016 transitions. [2019-10-13 21:13:44,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:13:44,248 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 216 [2019-10-13 21:13:44,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:44,269 INFO L225 Difference]: With dead ends: 768 [2019-10-13 21:13:44,269 INFO L226 Difference]: Without dead ends: 490 [2019-10-13 21:13:44,275 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 21:13:44,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2019-10-13 21:13:44,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2019-10-13 21:13:44,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2019-10-13 21:13:44,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 650 transitions. [2019-10-13 21:13:44,360 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 650 transitions. Word has length 216 [2019-10-13 21:13:44,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:44,362 INFO L462 AbstractCegarLoop]: Abstraction has 490 states and 650 transitions. [2019-10-13 21:13:44,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:13:44,363 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 650 transitions. [2019-10-13 21:13:44,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-13 21:13:44,372 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:44,372 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:44,372 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:44,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:44,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1056183382, now seen corresponding path program 1 times [2019-10-13 21:13:44,373 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:44,373 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406378929] [2019-10-13 21:13:44,374 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:44,374 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:44,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:44,719 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:44,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406378929] [2019-10-13 21:13:44,720 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:44,720 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:44,720 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684806039] [2019-10-13 21:13:44,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:44,725 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:44,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:44,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:44,726 INFO L87 Difference]: Start difference. First operand 490 states and 650 transitions. Second operand 3 states. [2019-10-13 21:13:44,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:44,802 INFO L93 Difference]: Finished difference Result 751 states and 980 transitions. [2019-10-13 21:13:44,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:44,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2019-10-13 21:13:44,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:44,808 INFO L225 Difference]: With dead ends: 751 [2019-10-13 21:13:44,808 INFO L226 Difference]: Without dead ends: 493 [2019-10-13 21:13:44,811 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 21:13:44,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2019-10-13 21:13:44,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 492. [2019-10-13 21:13:44,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2019-10-13 21:13:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 652 transitions. [2019-10-13 21:13:44,848 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 652 transitions. Word has length 217 [2019-10-13 21:13:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:44,849 INFO L462 AbstractCegarLoop]: Abstraction has 492 states and 652 transitions. [2019-10-13 21:13:44,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:44,849 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 652 transitions. [2019-10-13 21:13:44,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-13 21:13:44,854 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:44,855 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:44,855 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:44,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:44,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1277940166, now seen corresponding path program 1 times [2019-10-13 21:13:44,856 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:44,856 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325929425] [2019-10-13 21:13:44,856 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:44,856 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:44,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:45,087 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325929425] [2019-10-13 21:13:45,087 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:45,087 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:45,088 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695862343] [2019-10-13 21:13:45,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:45,092 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:45,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:45,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:45,093 INFO L87 Difference]: Start difference. First operand 492 states and 652 transitions. Second operand 3 states. [2019-10-13 21:13:45,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:45,132 INFO L93 Difference]: Finished difference Result 960 states and 1302 transitions. [2019-10-13 21:13:45,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:45,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2019-10-13 21:13:45,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:45,138 INFO L225 Difference]: With dead ends: 960 [2019-10-13 21:13:45,138 INFO L226 Difference]: Without dead ends: 533 [2019-10-13 21:13:45,139 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 21:13:45,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2019-10-13 21:13:45,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 532. [2019-10-13 21:13:45,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2019-10-13 21:13:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 721 transitions. [2019-10-13 21:13:45,165 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 721 transitions. Word has length 227 [2019-10-13 21:13:45,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:45,166 INFO L462 AbstractCegarLoop]: Abstraction has 532 states and 721 transitions. [2019-10-13 21:13:45,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:45,166 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 721 transitions. [2019-10-13 21:13:45,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-10-13 21:13:45,171 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:45,171 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:45,172 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:45,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:45,172 INFO L82 PathProgramCache]: Analyzing trace with hash -569425411, now seen corresponding path program 1 times [2019-10-13 21:13:45,172 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:45,173 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278728373] [2019-10-13 21:13:45,173 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:45,173 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:45,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:45,411 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278728373] [2019-10-13 21:13:45,411 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:45,412 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:45,412 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337553968] [2019-10-13 21:13:45,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:45,413 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:45,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:45,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:45,413 INFO L87 Difference]: Start difference. First operand 532 states and 721 transitions. Second operand 3 states. [2019-10-13 21:13:45,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:45,452 INFO L93 Difference]: Finished difference Result 1077 states and 1504 transitions. [2019-10-13 21:13:45,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:45,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2019-10-13 21:13:45,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:45,459 INFO L225 Difference]: With dead ends: 1077 [2019-10-13 21:13:45,459 INFO L226 Difference]: Without dead ends: 610 [2019-10-13 21:13:45,461 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 21:13:45,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2019-10-13 21:13:45,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 609. [2019-10-13 21:13:45,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2019-10-13 21:13:45,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 853 transitions. [2019-10-13 21:13:45,499 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 853 transitions. Word has length 228 [2019-10-13 21:13:45,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:45,500 INFO L462 AbstractCegarLoop]: Abstraction has 609 states and 853 transitions. [2019-10-13 21:13:45,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:45,501 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 853 transitions. [2019-10-13 21:13:45,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-10-13 21:13:45,505 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:45,506 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:45,506 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:45,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:45,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1991839302, now seen corresponding path program 1 times [2019-10-13 21:13:45,507 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:45,507 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360071385] [2019-10-13 21:13:45,507 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:45,508 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:45,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:45,669 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:45,670 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360071385] [2019-10-13 21:13:45,670 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:45,670 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:45,670 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568782809] [2019-10-13 21:13:45,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:45,671 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:45,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:45,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:45,672 INFO L87 Difference]: Start difference. First operand 609 states and 853 transitions. Second operand 3 states. [2019-10-13 21:13:45,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:45,754 INFO L93 Difference]: Finished difference Result 1302 states and 1890 transitions. [2019-10-13 21:13:45,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:45,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2019-10-13 21:13:45,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:45,760 INFO L225 Difference]: With dead ends: 1302 [2019-10-13 21:13:45,760 INFO L226 Difference]: Without dead ends: 758 [2019-10-13 21:13:45,762 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 21:13:45,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2019-10-13 21:13:45,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 757. [2019-10-13 21:13:45,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 757 states. [2019-10-13 21:13:45,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1105 transitions. [2019-10-13 21:13:45,793 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1105 transitions. Word has length 229 [2019-10-13 21:13:45,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:45,794 INFO L462 AbstractCegarLoop]: Abstraction has 757 states and 1105 transitions. [2019-10-13 21:13:45,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:45,794 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1105 transitions. [2019-10-13 21:13:45,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-10-13 21:13:45,799 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:45,800 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:45,800 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:45,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:45,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1885576835, now seen corresponding path program 1 times [2019-10-13 21:13:45,801 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:45,801 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708687816] [2019-10-13 21:13:45,801 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:45,801 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:45,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:45,942 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:45,943 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708687816] [2019-10-13 21:13:45,943 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:45,943 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:45,943 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913342585] [2019-10-13 21:13:45,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:45,944 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:45,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:45,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:45,945 INFO L87 Difference]: Start difference. First operand 757 states and 1105 transitions. Second operand 3 states. [2019-10-13 21:13:45,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:45,990 INFO L93 Difference]: Finished difference Result 1734 states and 2626 transitions. [2019-10-13 21:13:45,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:45,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2019-10-13 21:13:45,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:45,997 INFO L225 Difference]: With dead ends: 1734 [2019-10-13 21:13:45,997 INFO L226 Difference]: Without dead ends: 1042 [2019-10-13 21:13:46,000 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 21:13:46,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2019-10-13 21:13:46,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1041. [2019-10-13 21:13:46,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2019-10-13 21:13:46,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1585 transitions. [2019-10-13 21:13:46,042 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1585 transitions. Word has length 230 [2019-10-13 21:13:46,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:46,043 INFO L462 AbstractCegarLoop]: Abstraction has 1041 states and 1585 transitions. [2019-10-13 21:13:46,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:46,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1585 transitions. [2019-10-13 21:13:46,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-13 21:13:46,050 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:46,051 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:46,051 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:46,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:46,051 INFO L82 PathProgramCache]: Analyzing trace with hash 752063174, now seen corresponding path program 1 times [2019-10-13 21:13:46,051 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:46,052 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740375083] [2019-10-13 21:13:46,052 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:46,052 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:46,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:46,196 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740375083] [2019-10-13 21:13:46,196 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:46,196 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:46,197 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12331332] [2019-10-13 21:13:46,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:46,198 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:46,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:46,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:46,198 INFO L87 Difference]: Start difference. First operand 1041 states and 1585 transitions. Second operand 3 states. [2019-10-13 21:13:46,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:46,322 INFO L93 Difference]: Finished difference Result 2562 states and 4026 transitions. [2019-10-13 21:13:46,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:46,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 231 [2019-10-13 21:13:46,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:46,340 INFO L225 Difference]: With dead ends: 2562 [2019-10-13 21:13:46,340 INFO L226 Difference]: Without dead ends: 1586 [2019-10-13 21:13:46,346 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 21:13:46,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2019-10-13 21:13:46,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1585. [2019-10-13 21:13:46,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2019-10-13 21:13:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2497 transitions. [2019-10-13 21:13:46,445 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2497 transitions. Word has length 231 [2019-10-13 21:13:46,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:46,446 INFO L462 AbstractCegarLoop]: Abstraction has 1585 states and 2497 transitions. [2019-10-13 21:13:46,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:46,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2497 transitions. [2019-10-13 21:13:46,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-13 21:13:46,460 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:46,461 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:46,461 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:46,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:46,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1473001190, now seen corresponding path program 1 times [2019-10-13 21:13:46,462 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:46,462 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098880332] [2019-10-13 21:13:46,463 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:46,463 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:46,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:46,977 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-13 21:13:46,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098880332] [2019-10-13 21:13:46,978 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:46,978 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-13 21:13:46,979 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969101036] [2019-10-13 21:13:46,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 21:13:46,980 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:46,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 21:13:46,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:13:46,981 INFO L87 Difference]: Start difference. First operand 1585 states and 2497 transitions. Second operand 19 states. [2019-10-13 21:13:51,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:51,485 INFO L93 Difference]: Finished difference Result 3938 states and 6152 transitions. [2019-10-13 21:13:51,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-13 21:13:51,485 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 233 [2019-10-13 21:13:51,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:51,509 INFO L225 Difference]: With dead ends: 3938 [2019-10-13 21:13:51,509 INFO L226 Difference]: Without dead ends: 3693 [2019-10-13 21:13:51,513 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-10-13 21:13:51,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3693 states. [2019-10-13 21:13:51,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3693 to 3656. [2019-10-13 21:13:51,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3656 states. [2019-10-13 21:13:51,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 5775 transitions. [2019-10-13 21:13:51,708 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 5775 transitions. Word has length 233 [2019-10-13 21:13:51,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:51,708 INFO L462 AbstractCegarLoop]: Abstraction has 3656 states and 5775 transitions. [2019-10-13 21:13:51,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-13 21:13:51,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 5775 transitions. [2019-10-13 21:13:51,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-13 21:13:51,731 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:51,732 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:51,732 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:51,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:51,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1846424479, now seen corresponding path program 1 times [2019-10-13 21:13:51,733 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:51,733 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115833834] [2019-10-13 21:13:51,733 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:51,734 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:51,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:52,106 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-13 21:13:52,107 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115833834] [2019-10-13 21:13:52,107 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:52,107 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-13 21:13:52,107 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837151472] [2019-10-13 21:13:52,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:13:52,108 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:52,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:13:52,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:13:52,109 INFO L87 Difference]: Start difference. First operand 3656 states and 5775 transitions. Second operand 15 states. [2019-10-13 21:13:55,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:55,397 INFO L93 Difference]: Finished difference Result 4789 states and 7304 transitions. [2019-10-13 21:13:55,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-10-13 21:13:55,397 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 234 [2019-10-13 21:13:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:55,421 INFO L225 Difference]: With dead ends: 4789 [2019-10-13 21:13:55,421 INFO L226 Difference]: Without dead ends: 3758 [2019-10-13 21:13:55,426 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-10-13 21:13:55,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2019-10-13 21:13:55,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3726. [2019-10-13 21:13:55,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3726 states. [2019-10-13 21:13:55,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3726 states to 3726 states and 5887 transitions. [2019-10-13 21:13:55,609 INFO L78 Accepts]: Start accepts. Automaton has 3726 states and 5887 transitions. Word has length 234 [2019-10-13 21:13:55,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:55,609 INFO L462 AbstractCegarLoop]: Abstraction has 3726 states and 5887 transitions. [2019-10-13 21:13:55,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:13:55,610 INFO L276 IsEmpty]: Start isEmpty. Operand 3726 states and 5887 transitions. [2019-10-13 21:13:55,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-13 21:13:55,636 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:55,637 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:55,637 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:55,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:55,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1016476075, now seen corresponding path program 1 times [2019-10-13 21:13:55,638 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:55,639 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334076305] [2019-10-13 21:13:55,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:55,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:55,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-13 21:13:55,838 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334076305] [2019-10-13 21:13:55,838 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:55,839 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:13:55,839 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891389122] [2019-10-13 21:13:55,839 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:13:55,840 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:55,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:13:55,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:13:55,840 INFO L87 Difference]: Start difference. First operand 3726 states and 5887 transitions. Second operand 5 states. [2019-10-13 21:13:55,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:55,945 INFO L93 Difference]: Finished difference Result 4547 states and 6961 transitions. [2019-10-13 21:13:55,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:13:55,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2019-10-13 21:13:55,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:55,971 INFO L225 Difference]: With dead ends: 4547 [2019-10-13 21:13:55,971 INFO L226 Difference]: Without dead ends: 3431 [2019-10-13 21:13:55,981 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 21:13:55,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2019-10-13 21:13:56,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 3431. [2019-10-13 21:13:56,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3431 states. [2019-10-13 21:13:56,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5482 transitions. [2019-10-13 21:13:56,194 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5482 transitions. Word has length 237 [2019-10-13 21:13:56,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:56,194 INFO L462 AbstractCegarLoop]: Abstraction has 3431 states and 5482 transitions. [2019-10-13 21:13:56,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:13:56,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5482 transitions. [2019-10-13 21:13:56,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-13 21:13:56,212 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:56,213 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:56,213 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:56,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:56,214 INFO L82 PathProgramCache]: Analyzing trace with hash 883045897, now seen corresponding path program 1 times [2019-10-13 21:13:56,214 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:56,214 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837057522] [2019-10-13 21:13:56,214 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:56,214 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:56,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:56,484 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-13 21:13:56,484 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837057522] [2019-10-13 21:13:56,485 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:56,485 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-13 21:13:56,485 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791133068] [2019-10-13 21:13:56,485 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:13:56,486 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:56,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:13:56,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:13:56,486 INFO L87 Difference]: Start difference. First operand 3431 states and 5482 transitions. Second operand 16 states. [2019-10-13 21:13:56,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:56,851 INFO L93 Difference]: Finished difference Result 4324 states and 6671 transitions. [2019-10-13 21:13:56,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:13:56,851 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 234 [2019-10-13 21:13:56,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:56,870 INFO L225 Difference]: With dead ends: 4324 [2019-10-13 21:13:56,871 INFO L226 Difference]: Without dead ends: 3483 [2019-10-13 21:13:56,875 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:13:56,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3483 states. [2019-10-13 21:13:57,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3483 to 3465. [2019-10-13 21:13:57,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3465 states. [2019-10-13 21:13:57,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3465 states to 3465 states and 5525 transitions. [2019-10-13 21:13:57,015 INFO L78 Accepts]: Start accepts. Automaton has 3465 states and 5525 transitions. Word has length 234 [2019-10-13 21:13:57,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:57,015 INFO L462 AbstractCegarLoop]: Abstraction has 3465 states and 5525 transitions. [2019-10-13 21:13:57,016 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:13:57,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3465 states and 5525 transitions. [2019-10-13 21:13:57,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-13 21:13:57,034 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:57,035 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:57,035 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:57,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:57,035 INFO L82 PathProgramCache]: Analyzing trace with hash -306166866, now seen corresponding path program 1 times [2019-10-13 21:13:57,036 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:57,036 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865353822] [2019-10-13 21:13:57,036 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:57,036 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:57,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:57,245 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-13 21:13:57,245 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865353822] [2019-10-13 21:13:57,246 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:57,246 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:13:57,246 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854705105] [2019-10-13 21:13:57,247 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:13:57,247 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:57,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:13:57,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:13:57,248 INFO L87 Difference]: Start difference. First operand 3465 states and 5525 transitions. Second operand 5 states. [2019-10-13 21:13:58,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:58,313 INFO L93 Difference]: Finished difference Result 6702 states and 10482 transitions. [2019-10-13 21:13:58,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:13:58,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2019-10-13 21:13:58,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:58,374 INFO L225 Difference]: With dead ends: 6702 [2019-10-13 21:13:58,375 INFO L226 Difference]: Without dead ends: 6147 [2019-10-13 21:13:58,380 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 21:13:58,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6147 states. [2019-10-13 21:13:58,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6147 to 6116. [2019-10-13 21:13:58,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6116 states. [2019-10-13 21:13:58,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6116 states to 6116 states and 9690 transitions. [2019-10-13 21:13:58,649 INFO L78 Accepts]: Start accepts. Automaton has 6116 states and 9690 transitions. Word has length 234 [2019-10-13 21:13:58,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:58,650 INFO L462 AbstractCegarLoop]: Abstraction has 6116 states and 9690 transitions. [2019-10-13 21:13:58,650 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:13:58,650 INFO L276 IsEmpty]: Start isEmpty. Operand 6116 states and 9690 transitions. [2019-10-13 21:13:58,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-13 21:13:58,675 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:58,676 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:58,676 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:58,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:58,677 INFO L82 PathProgramCache]: Analyzing trace with hash 632364749, now seen corresponding path program 1 times [2019-10-13 21:13:58,677 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:58,677 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247046370] [2019-10-13 21:13:58,677 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:58,677 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:58,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:13:58,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247046370] [2019-10-13 21:13:58,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535059374] [2019-10-13 21:13:58,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:13:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:59,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:13:59,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:13:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:13:59,719 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:14:00,107 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:14:00,184 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:00,248 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:14:00,367 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:14:00,367 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-13 21:14:00,367 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348210492] [2019-10-13 21:14:00,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:14:00,368 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:00,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:14:00,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:14:00,369 INFO L87 Difference]: Start difference. First operand 6116 states and 9690 transitions. Second operand 9 states. [2019-10-13 21:14:01,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:01,864 INFO L93 Difference]: Finished difference Result 12210 states and 19360 transitions. [2019-10-13 21:14:01,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:14:01,864 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 234 [2019-10-13 21:14:01,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:01,887 INFO L225 Difference]: With dead ends: 12210 [2019-10-13 21:14:01,888 INFO L226 Difference]: Without dead ends: 6130 [2019-10-13 21:14:01,909 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 461 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:14:01,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2019-10-13 21:14:02,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 6130. [2019-10-13 21:14:02,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6130 states. [2019-10-13 21:14:02,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6130 states to 6130 states and 9708 transitions. [2019-10-13 21:14:02,415 INFO L78 Accepts]: Start accepts. Automaton has 6130 states and 9708 transitions. Word has length 234 [2019-10-13 21:14:02,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:02,416 INFO L462 AbstractCegarLoop]: Abstraction has 6130 states and 9708 transitions. [2019-10-13 21:14:02,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:14:02,416 INFO L276 IsEmpty]: Start isEmpty. Operand 6130 states and 9708 transitions. [2019-10-13 21:14:02,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-13 21:14:02,448 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:02,449 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:02,659 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:14:02,659 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:02,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:02,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1340159205, now seen corresponding path program 1 times [2019-10-13 21:14:02,661 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:02,661 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547283024] [2019-10-13 21:14:02,661 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:02,662 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:02,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:02,932 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:14:02,933 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547283024] [2019-10-13 21:14:02,933 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951394420] [2019-10-13 21:14:02,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:14:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:03,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 2967 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:14:03,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:14:03,699 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:03,700 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:14:04,054 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:04,101 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:14:04,699 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:14:04,699 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:14:04,700 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481449933] [2019-10-13 21:14:04,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:14:04,703 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:04,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:14:04,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:14:04,703 INFO L87 Difference]: Start difference. First operand 6130 states and 9708 transitions. Second operand 7 states. [2019-10-13 21:14:05,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:05,745 INFO L93 Difference]: Finished difference Result 12215 states and 19416 transitions. [2019-10-13 21:14:05,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:14:05,746 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2019-10-13 21:14:05,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:05,768 INFO L225 Difference]: With dead ends: 12215 [2019-10-13 21:14:05,769 INFO L226 Difference]: Without dead ends: 6136 [2019-10-13 21:14:05,792 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 468 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:14:05,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2019-10-13 21:14:06,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 6136. [2019-10-13 21:14:06,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6136 states. [2019-10-13 21:14:06,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6136 states to 6136 states and 9715 transitions. [2019-10-13 21:14:06,059 INFO L78 Accepts]: Start accepts. Automaton has 6136 states and 9715 transitions. Word has length 235 [2019-10-13 21:14:06,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:06,059 INFO L462 AbstractCegarLoop]: Abstraction has 6136 states and 9715 transitions. [2019-10-13 21:14:06,059 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:14:06,059 INFO L276 IsEmpty]: Start isEmpty. Operand 6136 states and 9715 transitions. [2019-10-13 21:14:06,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-13 21:14:06,085 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:06,085 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:06,301 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:14:06,301 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:06,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:06,302 INFO L82 PathProgramCache]: Analyzing trace with hash 344725991, now seen corresponding path program 1 times [2019-10-13 21:14:06,302 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:06,302 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731807677] [2019-10-13 21:14:06,302 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:06,302 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:06,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:06,534 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:14:06,535 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731807677] [2019-10-13 21:14:06,535 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129850163] [2019-10-13 21:14:06,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:14:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:07,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 2968 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:14:07,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:14:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:14:07,327 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:14:07,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:14:07,737 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:07,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:14:07,903 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:14:07,903 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-13 21:14:07,903 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327191610] [2019-10-13 21:14:07,905 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:14:07,905 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:07,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:14:07,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:14:07,906 INFO L87 Difference]: Start difference. First operand 6136 states and 9715 transitions. Second operand 16 states. [2019-10-13 21:14:09,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:09,748 INFO L93 Difference]: Finished difference Result 12223 states and 19372 transitions. [2019-10-13 21:14:09,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:14:09,753 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 236 [2019-10-13 21:14:09,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:09,776 INFO L225 Difference]: With dead ends: 12223 [2019-10-13 21:14:09,777 INFO L226 Difference]: Without dead ends: 6148 [2019-10-13 21:14:09,796 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 465 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:14:09,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6148 states. [2019-10-13 21:14:10,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6148 to 6146. [2019-10-13 21:14:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6146 states. [2019-10-13 21:14:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6146 states to 6146 states and 9726 transitions. [2019-10-13 21:14:10,137 INFO L78 Accepts]: Start accepts. Automaton has 6146 states and 9726 transitions. Word has length 236 [2019-10-13 21:14:10,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:10,138 INFO L462 AbstractCegarLoop]: Abstraction has 6146 states and 9726 transitions. [2019-10-13 21:14:10,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:14:10,138 INFO L276 IsEmpty]: Start isEmpty. Operand 6146 states and 9726 transitions. [2019-10-13 21:14:10,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-13 21:14:10,157 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:10,158 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:10,369 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:14:10,369 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:10,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:10,370 INFO L82 PathProgramCache]: Analyzing trace with hash 203143143, now seen corresponding path program 2 times [2019-10-13 21:14:10,370 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:10,370 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503829200] [2019-10-13 21:14:10,370 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:10,370 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:10,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:10,701 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-13 21:14:10,701 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503829200] [2019-10-13 21:14:10,701 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881484842] [2019-10-13 21:14:10,702 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:14:11,182 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:14:11,182 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:14:11,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 2163 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:14:11,196 INFO L279 TraceCheckSpWp]: Computing forward predicates...