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_spec9_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:19:03,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:19:03,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:19:03,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:19:03,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:19:03,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:19:03,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:19:03,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:19:03,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:19:03,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:19:03,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:19:03,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:19:03,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:19:03,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:19:03,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:19:03,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:19:03,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:19:03,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:19:03,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:19:03,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:19:03,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:19:03,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:19:03,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:19:03,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:19:03,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:19:03,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:19:03,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:19:03,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:19:03,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:19:03,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:19:03,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:19:03,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:19:03,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:19:03,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:19:03,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:19:03,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:19:03,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:19:03,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:19:03,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:19:03,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:19:03,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:19:03,154 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 21:19:03,175 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:19:03,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:19:03,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:19:03,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:19:03,179 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:19:03,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:19:03,180 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:19:03,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:19:03,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:19:03,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:19:03,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:19:03,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:19:03,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:19:03,182 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:19:03,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:19:03,183 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:19:03,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:19:03,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:19:03,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:19:03,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:19:03,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:19:03,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:19:03,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:19:03,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:19:03,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:19:03,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:19:03,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:19:03,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:19:03,185 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 21:19:03,481 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:19:03,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:19:03,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:19:03,509 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:19:03,509 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:19:03,510 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product26.cil.c [2019-10-13 21:19:03,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e429aec/d1628d53c5b742fdb48270c0595f46f5/FLAGf8ef235cd [2019-10-13 21:19:04,185 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:19:04,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product26.cil.c [2019-10-13 21:19:04,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e429aec/d1628d53c5b742fdb48270c0595f46f5/FLAGf8ef235cd [2019-10-13 21:19:04,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e429aec/d1628d53c5b742fdb48270c0595f46f5 [2019-10-13 21:19:04,408 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:19:04,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:19:04,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:04,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:19:04,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:19:04,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:04" (1/1) ... [2019-10-13 21:19:04,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c3781e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:04, skipping insertion in model container [2019-10-13 21:19:04,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:04" (1/1) ... [2019-10-13 21:19:04,421 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:19:04,508 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:19:05,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:05,215 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:19:05,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:05,495 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:19:05,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05 WrapperNode [2019-10-13 21:19:05,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:05,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:19:05,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:19:05,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:19:05,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:19:05,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:19:05,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:19:05,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:19:05,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (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 21:19:05,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:19:05,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:19:05,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:05,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:05,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:05,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:05,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:19:05,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:19:05,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:19:05,761 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:19:05,762 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:19:05,762 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:05,762 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:19:05,762 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:05,763 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:19:05,763 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:19:05,763 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:19:05,763 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:19:05,763 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:19:05,764 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:19:05,764 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:19:05,764 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:19:05,764 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:19:05,765 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:19:05,765 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:19:05,765 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:19:05,765 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:19:05,765 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:19:05,766 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:19:05,766 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:19:05,766 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:19:05,766 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:19:05,767 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:19:05,767 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:19:05,767 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:19:05,767 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:19:05,767 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:19:05,768 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:19:05,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:19:05,768 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:19:05,768 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:19:05,768 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:19:05,768 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:19:05,769 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:19:05,769 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:19:05,769 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:19:05,769 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:19:05,769 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:19:05,769 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:19:05,769 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-13 21:19:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:19:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:19:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:19:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:19:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:19:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:19:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:19:05,771 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:19:05,771 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:19:05,771 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:19:05,771 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:19:05,771 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:19:05,771 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:19:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:19:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:19:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:19:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:19:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:19:05,773 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:19:05,773 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:19:05,773 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:19:05,773 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:19:05,773 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:19:05,773 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:19:05,774 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:19:05,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:19:05,774 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:19:05,774 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:19:05,774 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:19:05,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:19:05,775 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:19:05,775 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:19:05,775 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:19:05,775 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:19:05,775 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:19:05,775 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:19:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:19:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:19:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:19:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:19:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:19:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:19:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:19:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:19:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:19:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:19:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:19:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:19:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:19:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:19:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:19:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:19:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:19:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:19:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:19:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:19:05,779 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:19:05,779 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:19:05,779 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:19:05,779 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:19:05,779 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:19:05,779 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:19:05,779 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:19:05,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:19:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:19:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:19:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:19:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:19:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:19:05,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:05,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:19:05,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:19:05,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:19:05,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:19:05,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:05,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:19:05,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:05,782 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:05,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:19:05,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:19:05,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:19:05,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:19:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:19:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:19:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:19:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:19:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:19:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:19:05,784 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:19:05,784 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:19:05,784 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:19:05,784 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:19:05,784 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:19:05,784 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:19:05,784 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:19:05,785 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:19:05,785 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:19:05,785 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:19:05,785 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:19:05,785 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:19:05,785 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:19:05,786 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:19:05,786 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:19:05,786 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:19:05,786 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:19:05,786 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:19:05,786 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:19:05,786 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:19:05,787 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:19:05,787 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:19:05,787 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:19:05,787 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:19:05,787 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:19:05,787 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:19:05,787 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:19:05,788 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:19:05,788 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:19:05,788 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:19:05,788 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:19:05,788 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:19:05,788 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:19:05,788 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:19:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:19:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:19:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:19:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:19:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:19:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:19:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:19:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:19:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:19:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:19:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:19:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:19:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:19:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:19:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:19:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:19:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:19:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:19:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:19:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:19:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:19:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:19:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:19:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:19:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:19:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:19:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:19:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:19:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:19:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:19:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:19:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:19:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:19:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:19:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:19:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:19:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:19:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:19:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:19:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:19:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:19:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:19:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-13 21:19:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:19:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:19:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:19:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:19:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:19:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:19:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:19:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:19:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:19:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:19:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:19:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:19:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:19:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:19:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:19:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:19:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:19:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:19:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:19:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:19:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:19:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:19:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:19:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:19:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:19:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:19:07,934 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:19:07,935 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:19:07,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:07 BoogieIcfgContainer [2019-10-13 21:19:07,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:19:07,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:19:07,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:19:07,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:19:07,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:19:04" (1/3) ... [2019-10-13 21:19:07,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc335d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:07, skipping insertion in model container [2019-10-13 21:19:07,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (2/3) ... [2019-10-13 21:19:07,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc335d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:07, skipping insertion in model container [2019-10-13 21:19:07,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:07" (3/3) ... [2019-10-13 21:19:07,945 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product26.cil.c [2019-10-13 21:19:07,956 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:19:07,969 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:19:07,982 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:19:08,027 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:19:08,027 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:19:08,030 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:19:08,031 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:19:08,031 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:19:08,031 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:19:08,031 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:19:08,032 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:19:08,079 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states. [2019-10-13 21:19:08,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 21:19:08,131 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:08,133 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:08,136 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:08,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:08,143 INFO L82 PathProgramCache]: Analyzing trace with hash -659135283, now seen corresponding path program 1 times [2019-10-13 21:19:08,152 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:08,153 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072486140] [2019-10-13 21:19:08,153 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:08,153 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:08,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:08,772 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072486140] [2019-10-13 21:19:08,773 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:08,773 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:19:08,773 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871863564] [2019-10-13 21:19:08,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:19:08,780 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:08,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:19:08,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:19:08,796 INFO L87 Difference]: Start difference. First operand 605 states. Second operand 2 states. [2019-10-13 21:19:08,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:08,893 INFO L93 Difference]: Finished difference Result 885 states and 1196 transitions. [2019-10-13 21:19:08,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:19:08,894 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 154 [2019-10-13 21:19:08,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:08,929 INFO L225 Difference]: With dead ends: 885 [2019-10-13 21:19:08,929 INFO L226 Difference]: Without dead ends: 576 [2019-10-13 21:19:08,936 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 21:19:08,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2019-10-13 21:19:09,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2019-10-13 21:19:09,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2019-10-13 21:19:09,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 784 transitions. [2019-10-13 21:19:09,036 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 784 transitions. Word has length 154 [2019-10-13 21:19:09,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:09,039 INFO L462 AbstractCegarLoop]: Abstraction has 576 states and 784 transitions. [2019-10-13 21:19:09,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:19:09,040 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 784 transitions. [2019-10-13 21:19:09,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 21:19:09,045 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:09,046 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:09,046 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:09,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:09,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1368128065, now seen corresponding path program 1 times [2019-10-13 21:19:09,047 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:09,047 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174157118] [2019-10-13 21:19:09,047 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:09,047 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:09,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:09,387 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174157118] [2019-10-13 21:19:09,388 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:09,388 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:09,388 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140621634] [2019-10-13 21:19:09,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:09,391 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:09,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:09,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:09,392 INFO L87 Difference]: Start difference. First operand 576 states and 784 transitions. Second operand 3 states. [2019-10-13 21:19:09,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:09,458 INFO L93 Difference]: Finished difference Result 868 states and 1162 transitions. [2019-10-13 21:19:09,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:09,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-10-13 21:19:09,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:09,467 INFO L225 Difference]: With dead ends: 868 [2019-10-13 21:19:09,468 INFO L226 Difference]: Without dead ends: 579 [2019-10-13 21:19:09,470 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 21:19:09,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-10-13 21:19:09,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 578. [2019-10-13 21:19:09,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2019-10-13 21:19:09,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 786 transitions. [2019-10-13 21:19:09,505 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 786 transitions. Word has length 155 [2019-10-13 21:19:09,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:09,506 INFO L462 AbstractCegarLoop]: Abstraction has 578 states and 786 transitions. [2019-10-13 21:19:09,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:09,506 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 786 transitions. [2019-10-13 21:19:09,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-13 21:19:09,509 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:09,509 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:09,510 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:09,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:09,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1660274866, now seen corresponding path program 1 times [2019-10-13 21:19:09,510 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:09,510 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084494154] [2019-10-13 21:19:09,511 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:09,511 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:09,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:09,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084494154] [2019-10-13 21:19:09,719 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:09,719 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:09,720 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813927119] [2019-10-13 21:19:09,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:09,721 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:09,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:09,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:09,722 INFO L87 Difference]: Start difference. First operand 578 states and 786 transitions. Second operand 3 states. [2019-10-13 21:19:09,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:09,762 INFO L93 Difference]: Finished difference Result 1136 states and 1576 transitions. [2019-10-13 21:19:09,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:09,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2019-10-13 21:19:09,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:09,768 INFO L225 Difference]: With dead ends: 1136 [2019-10-13 21:19:09,768 INFO L226 Difference]: Without dead ends: 623 [2019-10-13 21:19:09,771 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 21:19:09,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-13 21:19:09,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 622. [2019-10-13 21:19:09,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-10-13 21:19:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 861 transitions. [2019-10-13 21:19:09,800 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 861 transitions. Word has length 167 [2019-10-13 21:19:09,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:09,801 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 861 transitions. [2019-10-13 21:19:09,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:09,801 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 861 transitions. [2019-10-13 21:19:09,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-13 21:19:09,806 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:09,807 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:09,807 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:09,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:09,808 INFO L82 PathProgramCache]: Analyzing trace with hash -329114566, now seen corresponding path program 1 times [2019-10-13 21:19:09,808 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:09,808 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34658909] [2019-10-13 21:19:09,808 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:09,808 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:09,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:10,080 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:10,081 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34658909] [2019-10-13 21:19:10,081 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:10,082 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:10,082 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846263487] [2019-10-13 21:19:10,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:10,133 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:10,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:10,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:10,134 INFO L87 Difference]: Start difference. First operand 622 states and 861 transitions. Second operand 3 states. [2019-10-13 21:19:10,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:10,198 INFO L93 Difference]: Finished difference Result 1265 states and 1796 transitions. [2019-10-13 21:19:10,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:10,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-10-13 21:19:10,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:10,206 INFO L225 Difference]: With dead ends: 1265 [2019-10-13 21:19:10,206 INFO L226 Difference]: Without dead ends: 708 [2019-10-13 21:19:10,209 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 21:19:10,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-10-13 21:19:10,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 707. [2019-10-13 21:19:10,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2019-10-13 21:19:10,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1005 transitions. [2019-10-13 21:19:10,243 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1005 transitions. Word has length 168 [2019-10-13 21:19:10,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:10,244 INFO L462 AbstractCegarLoop]: Abstraction has 707 states and 1005 transitions. [2019-10-13 21:19:10,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:10,244 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1005 transitions. [2019-10-13 21:19:10,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-13 21:19:10,248 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:10,249 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:10,249 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:10,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:10,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1757978450, now seen corresponding path program 1 times [2019-10-13 21:19:10,249 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:10,250 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098606150] [2019-10-13 21:19:10,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:10,426 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:10,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098606150] [2019-10-13 21:19:10,427 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:10,427 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:10,427 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204629155] [2019-10-13 21:19:10,428 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:10,428 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:10,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:10,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:10,429 INFO L87 Difference]: Start difference. First operand 707 states and 1005 transitions. Second operand 3 states. [2019-10-13 21:19:10,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:10,471 INFO L93 Difference]: Finished difference Result 1514 states and 2218 transitions. [2019-10-13 21:19:10,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:10,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2019-10-13 21:19:10,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:10,477 INFO L225 Difference]: With dead ends: 1514 [2019-10-13 21:19:10,477 INFO L226 Difference]: Without dead ends: 872 [2019-10-13 21:19:10,480 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 21:19:10,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2019-10-13 21:19:10,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 871. [2019-10-13 21:19:10,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 871 states. [2019-10-13 21:19:10,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1281 transitions. [2019-10-13 21:19:10,527 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1281 transitions. Word has length 169 [2019-10-13 21:19:10,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:10,528 INFO L462 AbstractCegarLoop]: Abstraction has 871 states and 1281 transitions. [2019-10-13 21:19:10,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:10,528 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1281 transitions. [2019-10-13 21:19:10,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 21:19:10,533 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:10,533 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:10,533 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:10,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:10,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1940197261, now seen corresponding path program 1 times [2019-10-13 21:19:10,534 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:10,534 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850153673] [2019-10-13 21:19:10,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:10,784 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:19:10,785 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850153673] [2019-10-13 21:19:10,786 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:10,787 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:10,787 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78645431] [2019-10-13 21:19:10,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:10,788 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:10,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:10,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:10,788 INFO L87 Difference]: Start difference. First operand 871 states and 1281 transitions. Second operand 3 states. [2019-10-13 21:19:10,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:10,852 INFO L93 Difference]: Finished difference Result 1261 states and 1810 transitions. [2019-10-13 21:19:10,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:10,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-13 21:19:10,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:10,860 INFO L225 Difference]: With dead ends: 1261 [2019-10-13 21:19:10,861 INFO L226 Difference]: Without dead ends: 985 [2019-10-13 21:19:10,863 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 21:19:10,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2019-10-13 21:19:10,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 984. [2019-10-13 21:19:10,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 984 states. [2019-10-13 21:19:10,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1443 transitions. [2019-10-13 21:19:10,922 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1443 transitions. Word has length 171 [2019-10-13 21:19:10,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:10,925 INFO L462 AbstractCegarLoop]: Abstraction has 984 states and 1443 transitions. [2019-10-13 21:19:10,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:10,925 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1443 transitions. [2019-10-13 21:19:10,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2019-10-13 21:19:10,937 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:10,938 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:10,938 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:10,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:10,939 INFO L82 PathProgramCache]: Analyzing trace with hash 2026794430, now seen corresponding path program 1 times [2019-10-13 21:19:10,939 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:10,939 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215471818] [2019-10-13 21:19:10,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:19:11,275 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215471818] [2019-10-13 21:19:11,275 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:11,276 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:19:11,276 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037175084] [2019-10-13 21:19:11,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:19:11,277 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:11,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:19:11,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:19:11,278 INFO L87 Difference]: Start difference. First operand 984 states and 1443 transitions. Second operand 6 states. [2019-10-13 21:19:12,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:12,031 INFO L93 Difference]: Finished difference Result 2297 states and 3345 transitions. [2019-10-13 21:19:12,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:19:12,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 306 [2019-10-13 21:19:12,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:12,048 INFO L225 Difference]: With dead ends: 2297 [2019-10-13 21:19:12,048 INFO L226 Difference]: Without dead ends: 1919 [2019-10-13 21:19:12,052 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:19:12,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2019-10-13 21:19:12,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1908. [2019-10-13 21:19:12,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1908 states. [2019-10-13 21:19:12,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 2828 transitions. [2019-10-13 21:19:12,152 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 2828 transitions. Word has length 306 [2019-10-13 21:19:12,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:12,152 INFO L462 AbstractCegarLoop]: Abstraction has 1908 states and 2828 transitions. [2019-10-13 21:19:12,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:19:12,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 2828 transitions. [2019-10-13 21:19:12,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2019-10-13 21:19:12,164 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:12,164 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:12,164 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:12,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:12,165 INFO L82 PathProgramCache]: Analyzing trace with hash -900714473, now seen corresponding path program 1 times [2019-10-13 21:19:12,165 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:12,165 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215325246] [2019-10-13 21:19:12,165 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:12,166 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:12,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:12,438 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:19:12,438 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215325246] [2019-10-13 21:19:12,439 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:12,439 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:19:12,439 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745512171] [2019-10-13 21:19:12,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:19:12,440 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:12,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:19:12,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:19:12,441 INFO L87 Difference]: Start difference. First operand 1908 states and 2828 transitions. Second operand 9 states. [2019-10-13 21:19:12,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:12,807 INFO L93 Difference]: Finished difference Result 2661 states and 3825 transitions. [2019-10-13 21:19:12,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:19:12,808 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 307 [2019-10-13 21:19:12,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:12,827 INFO L225 Difference]: With dead ends: 2661 [2019-10-13 21:19:12,828 INFO L226 Difference]: Without dead ends: 1882 [2019-10-13 21:19:12,832 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:19:12,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2019-10-13 21:19:12,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1878. [2019-10-13 21:19:12,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2019-10-13 21:19:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2777 transitions. [2019-10-13 21:19:12,946 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2777 transitions. Word has length 307 [2019-10-13 21:19:12,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:12,948 INFO L462 AbstractCegarLoop]: Abstraction has 1878 states and 2777 transitions. [2019-10-13 21:19:12,948 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:19:12,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2777 transitions. [2019-10-13 21:19:12,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2019-10-13 21:19:12,960 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:12,961 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:12,961 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:12,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:12,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1909492724, now seen corresponding path program 1 times [2019-10-13 21:19:12,962 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:12,962 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641531304] [2019-10-13 21:19:12,962 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:12,962 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:12,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:19:13,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641531304] [2019-10-13 21:19:13,552 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473238863] [2019-10-13 21:19:13,552 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 21:19:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:14,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 3421 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:14,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:14,557 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-13 21:19:14,557 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:15,232 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:15,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:15,436 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:15,666 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:15,666 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-13 21:19:15,667 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726331316] [2019-10-13 21:19:15,668 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:19:15,668 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:15,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:19:15,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:15,669 INFO L87 Difference]: Start difference. First operand 1878 states and 2777 transitions. Second operand 9 states. [2019-10-13 21:19:17,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:17,190 INFO L93 Difference]: Finished difference Result 3734 states and 5534 transitions. [2019-10-13 21:19:17,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:19:17,190 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 300 [2019-10-13 21:19:17,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:17,203 INFO L225 Difference]: With dead ends: 3734 [2019-10-13 21:19:17,203 INFO L226 Difference]: Without dead ends: 1892 [2019-10-13 21:19:17,213 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 589 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:19:17,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2019-10-13 21:19:17,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1892. [2019-10-13 21:19:17,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1892 states. [2019-10-13 21:19:17,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2795 transitions. [2019-10-13 21:19:17,312 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2795 transitions. Word has length 300 [2019-10-13 21:19:17,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:17,312 INFO L462 AbstractCegarLoop]: Abstraction has 1892 states and 2795 transitions. [2019-10-13 21:19:17,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:19:17,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2795 transitions. [2019-10-13 21:19:17,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2019-10-13 21:19:17,323 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:17,324 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:17,536 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:17,536 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:17,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:17,537 INFO L82 PathProgramCache]: Analyzing trace with hash -308176290, now seen corresponding path program 1 times [2019-10-13 21:19:17,537 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:17,538 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571777218] [2019-10-13 21:19:17,538 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:17,539 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:17,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:18,367 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:19:18,369 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571777218] [2019-10-13 21:19:18,369 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167104554] [2019-10-13 21:19:18,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:19,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 3422 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:19,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-13 21:19:19,364 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:19,938 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:20,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:20,085 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:20,085 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-13 21:19:20,085 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455322745] [2019-10-13 21:19:20,086 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:19:20,086 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:20,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:19:20,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:20,087 INFO L87 Difference]: Start difference. First operand 1892 states and 2795 transitions. Second operand 7 states. [2019-10-13 21:19:21,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:21,507 INFO L93 Difference]: Finished difference Result 3737 states and 5547 transitions. [2019-10-13 21:19:21,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:19:21,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2019-10-13 21:19:21,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:21,519 INFO L225 Difference]: With dead ends: 3737 [2019-10-13 21:19:21,520 INFO L226 Difference]: Without dead ends: 1896 [2019-10-13 21:19:21,527 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 596 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:19:21,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2019-10-13 21:19:21,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1896. [2019-10-13 21:19:21,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1896 states. [2019-10-13 21:19:21,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2800 transitions. [2019-10-13 21:19:21,667 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2800 transitions. Word has length 301 [2019-10-13 21:19:21,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:21,667 INFO L462 AbstractCegarLoop]: Abstraction has 1896 states and 2800 transitions. [2019-10-13 21:19:21,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:19:21,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2800 transitions. [2019-10-13 21:19:21,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2019-10-13 21:19:21,679 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:21,679 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:21,887 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:21,887 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:21,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:21,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1715913160, now seen corresponding path program 1 times [2019-10-13 21:19:21,889 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:21,889 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453147152] [2019-10-13 21:19:21,889 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:21,890 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:21,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:22,403 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:19:22,403 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453147152] [2019-10-13 21:19:22,404 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359066733] [2019-10-13 21:19:22,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:23,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 3423 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:23,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:23,388 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:19:23,388 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:23,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:24,045 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:24,122 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:24,301 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:24,302 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:24,302 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-13 21:19:24,302 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117660320] [2019-10-13 21:19:24,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:19:24,304 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:24,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:19:24,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:19:24,305 INFO L87 Difference]: Start difference. First operand 1896 states and 2800 transitions. Second operand 16 states. [2019-10-13 21:19:26,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:26,141 INFO L93 Difference]: Finished difference Result 3743 states and 5542 transitions. [2019-10-13 21:19:26,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:26,141 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 302 [2019-10-13 21:19:26,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:26,160 INFO L225 Difference]: With dead ends: 3743 [2019-10-13 21:19:26,161 INFO L226 Difference]: Without dead ends: 1908 [2019-10-13 21:19:26,167 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 593 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:19:26,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2019-10-13 21:19:26,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1906. [2019-10-13 21:19:26,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1906 states. [2019-10-13 21:19:26,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2811 transitions. [2019-10-13 21:19:26,261 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2811 transitions. Word has length 302 [2019-10-13 21:19:26,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:26,261 INFO L462 AbstractCegarLoop]: Abstraction has 1906 states and 2811 transitions. [2019-10-13 21:19:26,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:19:26,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2811 transitions. [2019-10-13 21:19:26,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2019-10-13 21:19:26,273 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:26,273 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:26,482 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:26,483 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:26,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:26,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1499489144, now seen corresponding path program 2 times [2019-10-13 21:19:26,484 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:26,484 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146688982] [2019-10-13 21:19:26,485 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:26,485 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:26,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-13 21:19:26,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146688982] [2019-10-13 21:19:26,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410984598] [2019-10-13 21:19:26,888 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 21:19:27,575 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:19:27,576 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:27,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 2553 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:27,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:19:27,949 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:28,464 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:28,530 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 21:19:28,607 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:28,608 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-13 21:19:28,608 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010475544] [2019-10-13 21:19:28,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:19:28,609 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:28,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:19:28,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:19:28,610 INFO L87 Difference]: Start difference. First operand 1906 states and 2811 transitions. Second operand 12 states. [2019-10-13 21:19:30,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:30,118 INFO L93 Difference]: Finished difference Result 3734 states and 5530 transitions. [2019-10-13 21:19:30,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:19:30,119 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 303 [2019-10-13 21:19:30,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:30,132 INFO L225 Difference]: With dead ends: 3734 [2019-10-13 21:19:30,132 INFO L226 Difference]: Without dead ends: 1908 [2019-10-13 21:19:30,139 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 600 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:30,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2019-10-13 21:19:30,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1906. [2019-10-13 21:19:30,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1906 states. [2019-10-13 21:19:30,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2810 transitions. [2019-10-13 21:19:30,219 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2810 transitions. Word has length 303 [2019-10-13 21:19:30,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:30,219 INFO L462 AbstractCegarLoop]: Abstraction has 1906 states and 2810 transitions. [2019-10-13 21:19:30,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:19:30,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2810 transitions. [2019-10-13 21:19:30,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2019-10-13 21:19:30,228 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:30,228 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:30,437 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:30,438 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:30,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:30,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1833370558, now seen corresponding path program 3 times [2019-10-13 21:19:30,439 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:30,440 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927358027] [2019-10-13 21:19:30,440 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:30,440 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:30,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:30,865 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927358027] [2019-10-13 21:19:30,865 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959995324] [2019-10-13 21:19:30,866 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:31,506 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:19:31,506 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:31,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 2757 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:31,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:19:31,733 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:32,292 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:32,374 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:32,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:32,669 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 21:19:32,669 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:32,669 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-13 21:19:32,669 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023993811] [2019-10-13 21:19:32,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:19:32,671 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:32,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:19:32,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:32,672 INFO L87 Difference]: Start difference. First operand 1906 states and 2810 transitions. Second operand 15 states. [2019-10-13 21:19:34,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:34,982 INFO L93 Difference]: Finished difference Result 3741 states and 5537 transitions. [2019-10-13 21:19:34,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:34,987 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 304 [2019-10-13 21:19:34,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:34,997 INFO L225 Difference]: With dead ends: 3741 [2019-10-13 21:19:34,998 INFO L226 Difference]: Without dead ends: 1910 [2019-10-13 21:19:35,006 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 597 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:19:35,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2019-10-13 21:19:35,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1906. [2019-10-13 21:19:35,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1906 states. [2019-10-13 21:19:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2809 transitions. [2019-10-13 21:19:35,088 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2809 transitions. Word has length 304 [2019-10-13 21:19:35,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:35,090 INFO L462 AbstractCegarLoop]: Abstraction has 1906 states and 2809 transitions. [2019-10-13 21:19:35,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:19:35,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2809 transitions. [2019-10-13 21:19:35,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2019-10-13 21:19:35,098 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:35,098 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:35,305 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:35,305 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:35,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:35,306 INFO L82 PathProgramCache]: Analyzing trace with hash 329382665, now seen corresponding path program 1 times [2019-10-13 21:19:35,307 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:35,307 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486765869] [2019-10-13 21:19:35,307 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:35,308 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:35,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:35,681 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:35,682 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486765869] [2019-10-13 21:19:35,682 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197744173] [2019-10-13 21:19:35,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:36,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 3423 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:36,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:19:36,689 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:37,183 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:37,238 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 21:19:37,324 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:37,325 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 31 [2019-10-13 21:19:37,325 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756894342] [2019-10-13 21:19:37,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:19:37,326 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:37,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:19:37,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:37,326 INFO L87 Difference]: Start difference. First operand 1906 states and 2809 transitions. Second operand 11 states. [2019-10-13 21:19:38,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:38,300 INFO L93 Difference]: Finished difference Result 3740 states and 5537 transitions. [2019-10-13 21:19:38,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:19:38,300 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 305 [2019-10-13 21:19:38,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:38,315 INFO L225 Difference]: With dead ends: 3740 [2019-10-13 21:19:38,315 INFO L226 Difference]: Without dead ends: 1914 [2019-10-13 21:19:38,323 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 604 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:19:38,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2019-10-13 21:19:38,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1908. [2019-10-13 21:19:38,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1908 states. [2019-10-13 21:19:38,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 2812 transitions. [2019-10-13 21:19:38,449 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 2812 transitions. Word has length 305 [2019-10-13 21:19:38,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:38,449 INFO L462 AbstractCegarLoop]: Abstraction has 1908 states and 2812 transitions. [2019-10-13 21:19:38,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:19:38,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 2812 transitions. [2019-10-13 21:19:38,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307