java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:13:40,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:13:40,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:13:40,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:13:40,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:13:40,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:13:40,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:13:40,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:13:40,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:13:40,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:13:40,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:13:40,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:13:40,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:13:40,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:13:40,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:13:40,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:13:40,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:13:40,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:13:40,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:13:40,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:13:40,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:13:40,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:13:40,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:13:40,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:13:40,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:13:40,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:13:40,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:13:40,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:13:40,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:13:40,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:13:40,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:13:40,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:13:40,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:13:40,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:13:40,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:13:40,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:13:40,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:13:40,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:13:40,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:13:40,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:13:40,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:13:40,769 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 [2019-10-15 01:13:40,783 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:13:40,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:13:40,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:13:40,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:13:40,785 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:13:40,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:13:40,786 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:13:40,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:13:40,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:13:40,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:13:40,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:13:40,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:13:40,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:13:40,787 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:13:40,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:13:40,788 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:13:40,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:13:40,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:13:40,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:13:40,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:13:40,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:13:40,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:13:40,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:13:40,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:13:40,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:13:40,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:13:40,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:13:40,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:13:40,791 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 [2019-10-15 01:13:41,101 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:13:41,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:13:41,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:13:41,121 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:13:41,121 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:13:41,122 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product13.cil.c [2019-10-15 01:13:41,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd36d1314/86680ec69dce410aa1f298942d08703c/FLAG32b082b2e [2019-10-15 01:13:41,850 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:13:41,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product13.cil.c [2019-10-15 01:13:41,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd36d1314/86680ec69dce410aa1f298942d08703c/FLAG32b082b2e [2019-10-15 01:13:42,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd36d1314/86680ec69dce410aa1f298942d08703c [2019-10-15 01:13:42,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:13:42,075 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:13:42,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:13:42,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:13:42,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:13:42,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:13:42" (1/1) ... [2019-10-15 01:13:42,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1874f1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:42, skipping insertion in model container [2019-10-15 01:13:42,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:13:42" (1/1) ... [2019-10-15 01:13:42,094 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:13:42,170 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:13:42,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:13:42,968 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:13:43,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:13:43,178 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:13:43,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:43 WrapperNode [2019-10-15 01:13:43,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:13:43,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:13:43,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:13:43,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:13:43,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:43" (1/1) ... [2019-10-15 01:13:43,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:43" (1/1) ... [2019-10-15 01:13:43,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:43" (1/1) ... [2019-10-15 01:13:43,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:43" (1/1) ... [2019-10-15 01:13:43,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:43" (1/1) ... [2019-10-15 01:13:43,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:43" (1/1) ... [2019-10-15 01:13:43,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:43" (1/1) ... [2019-10-15 01:13:43,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:13:43,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:13:43,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:13:43,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:13:43,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:43" (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 [2019-10-15 01:13:43,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:13:43,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:13:43,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:13:43,436 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:13:43,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:13:43,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:13:43,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:13:43,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:13:43,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:13:43,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:13:43,438 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:13:43,438 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:13:43,438 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:13:43,439 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:13:43,439 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:13:43,439 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:13:43,439 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:13:43,440 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:13:43,440 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:13:43,440 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:13:43,441 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:13:43,441 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:13:43,441 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:13:43,441 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:13:43,441 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:13:43,442 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:13:43,442 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:13:43,442 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:13:43,442 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:13:43,442 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:13:43,443 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:13:43,443 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:13:43,443 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:13:43,443 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:13:43,443 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:13:43,443 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:13:43,444 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:13:43,444 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:13:43,444 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:13:43,444 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:13:43,444 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:13:43,445 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:13:43,445 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:13:43,445 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:13:43,445 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:13:43,445 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:13:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:13:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:13:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:13:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:13:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:13:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:13:43,447 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:13:43,447 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:13:43,447 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:13:43,447 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:13:43,447 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:13:43,448 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:13:43,448 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:13:43,448 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:13:43,448 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:13:43,448 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:13:43,449 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:13:43,449 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:13:43,449 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:13:43,449 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:13:43,449 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:13:43,450 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:13:43,450 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:13:43,450 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:13:43,450 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:13:43,450 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:13:43,450 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:13:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:13:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:13:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:13:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:13:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:13:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:13:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:13:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:13:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:13:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:13:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:13:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:13:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:13:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:13:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:13:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:13:43,454 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:13:43,454 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:13:43,454 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:13:43,454 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:13:43,454 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:13:43,455 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:13:43,455 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:13:43,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:13:43,455 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:13:43,455 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:13:43,455 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:13:43,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:13:43,456 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:13:43,456 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:13:43,456 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:13:43,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:13:43,456 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:13:43,457 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:13:43,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:13:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:13:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:13:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:13:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:13:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:13:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:13:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:13:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:13:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:13:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:13:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:13:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:13:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:13:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:13:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:13:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:13:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:13:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:13:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:13:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:13:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:13:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:13:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:13:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:13:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:13:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:13:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:13:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:13:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:13:43,462 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:13:43,462 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:13:43,462 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:13:43,462 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:13:43,462 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:13:43,462 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:13:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:13:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:13:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:13:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:13:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:13:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:13:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:13:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:13:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:13:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:13:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:13:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:13:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:13:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:13:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:13:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:13:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:13:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:13:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:13:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:13:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:13:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:13:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:13:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:13:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:13:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:13:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:13:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:13:43,466 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:13:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:13:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:13:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:13:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:13:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:13:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:13:43,467 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:13:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:13:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:13:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:13:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:13:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:13:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:13:43,468 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:13:43,469 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:13:43,469 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:13:43,469 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:13:43,469 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:13:43,469 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:13:43,469 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:13:43,469 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:13:43,470 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:13:43,470 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:13:43,470 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:13:43,470 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:13:43,470 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:13:43,470 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:13:43,470 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:13:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:13:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:13:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:13:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:13:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:13:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:13:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:13:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:13:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:13:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:13:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:13:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:13:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:13:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:13:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:13:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:13:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:13:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:13:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:13:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:13:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:13:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:13:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:13:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:13:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:13:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:13:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:13:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:13:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:13:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:13:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:13:45,880 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:13:45,880 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:13:45,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:13:45 BoogieIcfgContainer [2019-10-15 01:13:45,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:13:45,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:13:45,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:13:45,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:13:45,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:13:42" (1/3) ... [2019-10-15 01:13:45,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34319b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:13:45, skipping insertion in model container [2019-10-15 01:13:45,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:43" (2/3) ... [2019-10-15 01:13:45,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34319b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:13:45, skipping insertion in model container [2019-10-15 01:13:45,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:13:45" (3/3) ... [2019-10-15 01:13:45,891 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product13.cil.c [2019-10-15 01:13:45,902 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:13:45,912 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:13:45,925 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:13:45,963 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:13:45,964 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:13:45,964 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:13:45,964 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:13:45,964 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:13:45,964 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:13:45,964 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:13:45,964 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:13:46,006 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states. [2019-10-15 01:13:46,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-15 01:13:46,041 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:46,043 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:46,047 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:46,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:46,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1066825624, now seen corresponding path program 1 times [2019-10-15 01:13:46,063 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:46,064 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832546240] [2019-10-15 01:13:46,064 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:46,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:46,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:46,727 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832546240] [2019-10-15 01:13:46,728 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:46,728 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:13:46,728 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990948760] [2019-10-15 01:13:46,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:13:46,735 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:46,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:13:46,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:13:46,756 INFO L87 Difference]: Start difference. First operand 449 states. Second operand 2 states. [2019-10-15 01:13:46,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:46,828 INFO L93 Difference]: Finished difference Result 617 states and 816 transitions. [2019-10-15 01:13:46,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:13:46,830 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 177 [2019-10-15 01:13:46,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:46,861 INFO L225 Difference]: With dead ends: 617 [2019-10-15 01:13:46,861 INFO L226 Difference]: Without dead ends: 409 [2019-10-15 01:13:46,869 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 [2019-10-15 01:13:46,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2019-10-15 01:13:46,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2019-10-15 01:13:46,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2019-10-15 01:13:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 544 transitions. [2019-10-15 01:13:47,013 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 544 transitions. Word has length 177 [2019-10-15 01:13:47,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:47,017 INFO L462 AbstractCegarLoop]: Abstraction has 409 states and 544 transitions. [2019-10-15 01:13:47,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:13:47,017 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 544 transitions. [2019-10-15 01:13:47,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-15 01:13:47,026 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:47,027 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:47,027 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:47,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:47,028 INFO L82 PathProgramCache]: Analyzing trace with hash -455066040, now seen corresponding path program 1 times [2019-10-15 01:13:47,028 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:47,028 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796585415] [2019-10-15 01:13:47,028 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:47,029 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:47,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:47,326 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796585415] [2019-10-15 01:13:47,326 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:47,326 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:47,326 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962080728] [2019-10-15 01:13:47,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:47,332 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:47,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:47,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:47,333 INFO L87 Difference]: Start difference. First operand 409 states and 544 transitions. Second operand 3 states. [2019-10-15 01:13:47,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:47,396 INFO L93 Difference]: Finished difference Result 600 states and 782 transitions. [2019-10-15 01:13:47,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:47,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2019-10-15 01:13:47,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:47,402 INFO L225 Difference]: With dead ends: 600 [2019-10-15 01:13:47,402 INFO L226 Difference]: Without dead ends: 412 [2019-10-15 01:13:47,404 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 [2019-10-15 01:13:47,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2019-10-15 01:13:47,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 411. [2019-10-15 01:13:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2019-10-15 01:13:47,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 546 transitions. [2019-10-15 01:13:47,431 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 546 transitions. Word has length 178 [2019-10-15 01:13:47,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:47,432 INFO L462 AbstractCegarLoop]: Abstraction has 411 states and 546 transitions. [2019-10-15 01:13:47,432 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:47,432 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 546 transitions. [2019-10-15 01:13:47,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-15 01:13:47,436 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:47,436 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:47,436 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:47,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:47,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1895632684, now seen corresponding path program 1 times [2019-10-15 01:13:47,437 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:47,437 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925154854] [2019-10-15 01:13:47,437 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:47,438 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:47,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:47,637 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:47,638 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925154854] [2019-10-15 01:13:47,638 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:47,638 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:47,638 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424986791] [2019-10-15 01:13:47,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:47,639 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:47,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:47,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:47,640 INFO L87 Difference]: Start difference. First operand 411 states and 546 transitions. Second operand 3 states. [2019-10-15 01:13:47,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:47,687 INFO L93 Difference]: Finished difference Result 796 states and 1087 transitions. [2019-10-15 01:13:47,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:47,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2019-10-15 01:13:47,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:47,693 INFO L225 Difference]: With dead ends: 796 [2019-10-15 01:13:47,693 INFO L226 Difference]: Without dead ends: 450 [2019-10-15 01:13:47,696 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 [2019-10-15 01:13:47,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2019-10-15 01:13:47,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 449. [2019-10-15 01:13:47,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2019-10-15 01:13:47,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 612 transitions. [2019-10-15 01:13:47,721 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 612 transitions. Word has length 184 [2019-10-15 01:13:47,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:47,722 INFO L462 AbstractCegarLoop]: Abstraction has 449 states and 612 transitions. [2019-10-15 01:13:47,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:47,722 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 612 transitions. [2019-10-15 01:13:47,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-15 01:13:47,726 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:47,726 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:47,727 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:47,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:47,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1099086942, now seen corresponding path program 1 times [2019-10-15 01:13:47,727 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:47,728 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621131748] [2019-10-15 01:13:47,728 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:47,728 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:47,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:13:47,995 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621131748] [2019-10-15 01:13:47,996 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:47,996 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:13:48,000 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029094780] [2019-10-15 01:13:48,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:13:48,005 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:48,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:13:48,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:13:48,011 INFO L87 Difference]: Start difference. First operand 449 states and 612 transitions. Second operand 8 states. [2019-10-15 01:13:48,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:48,127 INFO L93 Difference]: Finished difference Result 619 states and 829 transitions. [2019-10-15 01:13:48,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:13:48,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 185 [2019-10-15 01:13:48,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:48,140 INFO L225 Difference]: With dead ends: 619 [2019-10-15 01:13:48,140 INFO L226 Difference]: Without dead ends: 449 [2019-10-15 01:13:48,143 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:13:48,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2019-10-15 01:13:48,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2019-10-15 01:13:48,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2019-10-15 01:13:48,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 611 transitions. [2019-10-15 01:13:48,196 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 611 transitions. Word has length 185 [2019-10-15 01:13:48,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:48,199 INFO L462 AbstractCegarLoop]: Abstraction has 449 states and 611 transitions. [2019-10-15 01:13:48,199 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:13:48,199 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 611 transitions. [2019-10-15 01:13:48,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-10-15 01:13:48,209 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:48,209 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:48,210 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:48,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:48,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1092785353, now seen corresponding path program 1 times [2019-10-15 01:13:48,211 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:48,212 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289164465] [2019-10-15 01:13:48,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:48,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:48,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:48,689 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:13:48,690 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289164465] [2019-10-15 01:13:48,691 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:48,691 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:13:48,692 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378619831] [2019-10-15 01:13:48,693 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:13:48,693 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:48,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:13:48,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:13:48,694 INFO L87 Difference]: Start difference. First operand 449 states and 611 transitions. Second operand 7 states. [2019-10-15 01:13:50,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:50,935 INFO L93 Difference]: Finished difference Result 812 states and 1070 transitions. [2019-10-15 01:13:50,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:13:50,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2019-10-15 01:13:50,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:50,941 INFO L225 Difference]: With dead ends: 812 [2019-10-15 01:13:50,942 INFO L226 Difference]: Without dead ends: 634 [2019-10-15 01:13:50,944 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:13:50,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2019-10-15 01:13:50,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2019-10-15 01:13:50,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2019-10-15 01:13:50,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 832 transitions. [2019-10-15 01:13:50,996 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 832 transitions. Word has length 192 [2019-10-15 01:13:50,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:50,998 INFO L462 AbstractCegarLoop]: Abstraction has 625 states and 832 transitions. [2019-10-15 01:13:50,998 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:13:50,998 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 832 transitions. [2019-10-15 01:13:51,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-15 01:13:51,003 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:51,003 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:51,004 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:51,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:51,004 INFO L82 PathProgramCache]: Analyzing trace with hash 562715681, now seen corresponding path program 1 times [2019-10-15 01:13:51,004 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:51,005 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157731359] [2019-10-15 01:13:51,005 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:51,005 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:51,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:13:51,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157731359] [2019-10-15 01:13:51,586 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:51,586 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2019-10-15 01:13:51,586 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066313635] [2019-10-15 01:13:51,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-15 01:13:51,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:51,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-15 01:13:51,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2019-10-15 01:13:51,589 INFO L87 Difference]: Start difference. First operand 625 states and 832 transitions. Second operand 22 states. [2019-10-15 01:13:52,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:52,221 INFO L93 Difference]: Finished difference Result 1043 states and 1362 transitions. [2019-10-15 01:13:52,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:13:52,221 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 193 [2019-10-15 01:13:52,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:52,232 INFO L225 Difference]: With dead ends: 1043 [2019-10-15 01:13:52,232 INFO L226 Difference]: Without dead ends: 663 [2019-10-15 01:13:52,236 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:13:52,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2019-10-15 01:13:52,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 659. [2019-10-15 01:13:52,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2019-10-15 01:13:52,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 872 transitions. [2019-10-15 01:13:52,278 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 872 transitions. Word has length 193 [2019-10-15 01:13:52,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:52,280 INFO L462 AbstractCegarLoop]: Abstraction has 659 states and 872 transitions. [2019-10-15 01:13:52,280 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-15 01:13:52,280 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 872 transitions. [2019-10-15 01:13:52,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-10-15 01:13:52,288 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:52,288 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:52,289 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:52,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:52,289 INFO L82 PathProgramCache]: Analyzing trace with hash 2094009423, now seen corresponding path program 1 times [2019-10-15 01:13:52,290 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:52,290 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285855318] [2019-10-15 01:13:52,290 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:52,291 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:52,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:13:52,695 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285855318] [2019-10-15 01:13:52,695 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:52,695 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:13:52,696 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098814183] [2019-10-15 01:13:52,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:13:52,697 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:52,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:13:52,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:13:52,697 INFO L87 Difference]: Start difference. First operand 659 states and 872 transitions. Second operand 8 states. [2019-10-15 01:13:56,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:56,714 INFO L93 Difference]: Finished difference Result 1839 states and 2373 transitions. [2019-10-15 01:13:56,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 01:13:56,720 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 224 [2019-10-15 01:13:56,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:56,732 INFO L225 Difference]: With dead ends: 1839 [2019-10-15 01:13:56,733 INFO L226 Difference]: Without dead ends: 1473 [2019-10-15 01:13:56,735 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:13:56,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2019-10-15 01:13:56,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1459. [2019-10-15 01:13:56,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1459 states. [2019-10-15 01:13:56,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 1896 transitions. [2019-10-15 01:13:56,851 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 1896 transitions. Word has length 224 [2019-10-15 01:13:56,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:56,852 INFO L462 AbstractCegarLoop]: Abstraction has 1459 states and 1896 transitions. [2019-10-15 01:13:56,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:13:56,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 1896 transitions. [2019-10-15 01:13:56,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-10-15 01:13:56,859 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:56,859 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:56,860 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:56,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:56,860 INFO L82 PathProgramCache]: Analyzing trace with hash -458535677, now seen corresponding path program 1 times [2019-10-15 01:13:56,861 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:56,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836812402] [2019-10-15 01:13:56,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:56,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:56,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:57,305 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:13:57,306 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836812402] [2019-10-15 01:13:57,306 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:57,307 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-15 01:13:57,307 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747143355] [2019-10-15 01:13:57,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-15 01:13:57,308 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:57,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-15 01:13:57,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:13:57,309 INFO L87 Difference]: Start difference. First operand 1459 states and 1896 transitions. Second operand 18 states. [2019-10-15 01:13:57,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:57,669 INFO L93 Difference]: Finished difference Result 2072 states and 2679 transitions. [2019-10-15 01:13:57,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-15 01:13:57,669 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 225 [2019-10-15 01:13:57,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:57,677 INFO L225 Difference]: With dead ends: 2072 [2019-10-15 01:13:57,678 INFO L226 Difference]: Without dead ends: 1181 [2019-10-15 01:13:57,681 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:13:57,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2019-10-15 01:13:57,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1175. [2019-10-15 01:13:57,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2019-10-15 01:13:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1546 transitions. [2019-10-15 01:13:57,746 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1546 transitions. Word has length 225 [2019-10-15 01:13:57,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:57,747 INFO L462 AbstractCegarLoop]: Abstraction has 1175 states and 1546 transitions. [2019-10-15 01:13:57,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-15 01:13:57,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1546 transitions. [2019-10-15 01:13:57,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-15 01:13:57,754 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:57,755 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:57,755 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:57,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:57,756 INFO L82 PathProgramCache]: Analyzing trace with hash -2120696884, now seen corresponding path program 1 times [2019-10-15 01:13:57,756 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:57,757 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100785461] [2019-10-15 01:13:57,757 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:57,757 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:57,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:13:58,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100785461] [2019-10-15 01:13:58,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137051806] [2019-10-15 01:13:58,002 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 [2019-10-15 01:13:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:58,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 2542 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:13:58,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:13:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:13:58,901 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:13:59,343 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:13:59,431 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:13:59,494 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:13:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:13:59,634 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:13:59,634 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-15 01:13:59,634 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209821695] [2019-10-15 01:13:59,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:13:59,636 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:59,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:13:59,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:13:59,637 INFO L87 Difference]: Start difference. First operand 1175 states and 1546 transitions. Second operand 9 states. [2019-10-15 01:14:01,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:01,024 INFO L93 Difference]: Finished difference Result 2328 states and 3072 transitions. [2019-10-15 01:14:01,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:14:01,025 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 234 [2019-10-15 01:14:01,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:01,033 INFO L225 Difference]: With dead ends: 2328 [2019-10-15 01:14:01,070 INFO L226 Difference]: Without dead ends: 1189 [2019-10-15 01:14:01,073 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 454 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:14:01,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2019-10-15 01:14:01,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2019-10-15 01:14:01,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1189 states. [2019-10-15 01:14:01,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1564 transitions. [2019-10-15 01:14:01,136 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1564 transitions. Word has length 234 [2019-10-15 01:14:01,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:01,137 INFO L462 AbstractCegarLoop]: Abstraction has 1189 states and 1564 transitions. [2019-10-15 01:14:01,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:14:01,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1564 transitions. [2019-10-15 01:14:01,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-15 01:14:01,142 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:01,142 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:01,351 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:01,352 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:01,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:01,353 INFO L82 PathProgramCache]: Analyzing trace with hash 2044368972, now seen corresponding path program 1 times [2019-10-15 01:14:01,353 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:01,354 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949723332] [2019-10-15 01:14:01,354 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:01,355 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:01,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:01,763 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:01,764 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949723332] [2019-10-15 01:14:01,764 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83445615] [2019-10-15 01:14:01,765 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 [2019-10-15 01:14:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:02,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 2543 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:02,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:14:02,774 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:03,234 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:03,307 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:03,508 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:03,508 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:03,509 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:14:03,509 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837179812] [2019-10-15 01:14:03,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:03,511 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:03,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:03,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:14:03,512 INFO L87 Difference]: Start difference. First operand 1189 states and 1564 transitions. Second operand 7 states. [2019-10-15 01:14:04,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:04,607 INFO L93 Difference]: Finished difference Result 2329 states and 3076 transitions. [2019-10-15 01:14:04,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:14:04,607 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2019-10-15 01:14:04,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:04,618 INFO L225 Difference]: With dead ends: 2329 [2019-10-15 01:14:04,618 INFO L226 Difference]: Without dead ends: 1191 [2019-10-15 01:14:04,623 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 461 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:14:04,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2019-10-15 01:14:04,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1191. [2019-10-15 01:14:04,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1191 states. [2019-10-15 01:14:04,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1567 transitions. [2019-10-15 01:14:04,730 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1567 transitions. Word has length 235 [2019-10-15 01:14:04,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:04,730 INFO L462 AbstractCegarLoop]: Abstraction has 1191 states and 1567 transitions. [2019-10-15 01:14:04,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:04,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1567 transitions. [2019-10-15 01:14:04,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-15 01:14:04,739 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:04,740 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:04,949 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:04,950 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:04,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:04,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1414768713, now seen corresponding path program 1 times [2019-10-15 01:14:04,950 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:04,951 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513776602] [2019-10-15 01:14:04,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:04,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:04,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:05,185 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:05,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513776602] [2019-10-15 01:14:05,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625403932] [2019-10-15 01:14:05,186 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 [2019-10-15 01:14:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:05,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 2544 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:05,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:06,234 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:06,234 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:06,561 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:06,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:06,722 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:06,851 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:06,851 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-15 01:14:06,852 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980055390] [2019-10-15 01:14:06,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:14:06,853 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:06,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:14:06,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:14:06,853 INFO L87 Difference]: Start difference. First operand 1191 states and 1567 transitions. Second operand 16 states. [2019-10-15 01:14:08,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:08,261 INFO L93 Difference]: Finished difference Result 2333 states and 3076 transitions. [2019-10-15 01:14:08,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:08,262 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 236 [2019-10-15 01:14:08,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:08,269 INFO L225 Difference]: With dead ends: 2333 [2019-10-15 01:14:08,270 INFO L226 Difference]: Without dead ends: 1203 [2019-10-15 01:14:08,274 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 458 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:14:08,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2019-10-15 01:14:08,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2019-10-15 01:14:08,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1201 states. [2019-10-15 01:14:08,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1578 transitions. [2019-10-15 01:14:08,345 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1578 transitions. Word has length 236 [2019-10-15 01:14:08,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:08,345 INFO L462 AbstractCegarLoop]: Abstraction has 1201 states and 1578 transitions. [2019-10-15 01:14:08,346 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:14:08,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1578 transitions. [2019-10-15 01:14:08,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-15 01:14:08,356 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:08,357 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:08,574 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:08,575 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:08,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:08,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1479108445, now seen corresponding path program 2 times [2019-10-15 01:14:08,576 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:08,577 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845130092] [2019-10-15 01:14:08,577 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:08,577 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:08,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:09,436 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:09,436 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845130092] [2019-10-15 01:14:09,437 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433212988] [2019-10-15 01:14:09,437 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 [2019-10-15 01:14:09,985 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:14:09,986 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:09,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 2439 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:10,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:10,221 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:10,222 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:10,536 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:10,622 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:10,714 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:14:10,714 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:10,715 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [29] total 39 [2019-10-15 01:14:10,715 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820437268] [2019-10-15 01:14:10,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:14:10,716 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:10,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:14:10,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1385, Unknown=0, NotChecked=0, Total=1482 [2019-10-15 01:14:10,717 INFO L87 Difference]: Start difference. First operand 1201 states and 1578 transitions. Second operand 12 states. [2019-10-15 01:14:11,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:11,612 INFO L93 Difference]: Finished difference Result 2324 states and 3064 transitions. [2019-10-15 01:14:11,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:14:11,612 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 237 [2019-10-15 01:14:11,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:11,620 INFO L225 Difference]: With dead ends: 2324 [2019-10-15 01:14:11,620 INFO L226 Difference]: Without dead ends: 1203 [2019-10-15 01:14:11,625 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 476 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2019-10-15 01:14:11,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states.