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_spec8_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:17:34,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:17:34,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:17:34,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:17:34,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:17:34,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:17:34,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:17:34,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:17:34,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:17:34,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:17:34,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:17:34,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:17:34,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:17:34,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:17:34,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:17:34,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:17:34,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:17:34,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:17:34,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:17:34,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:17:34,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:17:34,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:17:34,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:17:34,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:17:34,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:17:34,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:17:34,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:17:34,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:17:34,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:17:34,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:17:34,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:17:34,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:17:34,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:17:34,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:17:34,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:17:34,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:17:34,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:17:34,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:17:34,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:17:34,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:17:34,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:17:34,736 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 01:17:34,756 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:17:34,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:17:34,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:17:34,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:17:34,758 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:17:34,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:17:34,758 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:17:34,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:17:34,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:17:34,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:17:34,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:17:34,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:17:34,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:17:34,759 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:17:34,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:17:34,760 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:17:34,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:17:34,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:17:34,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:17:34,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:17:34,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:17:34,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:17:34,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:17:34,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:17:34,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:17:34,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:17:34,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:17:34,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:17:34,762 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 01:17:35,081 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:17:35,097 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:17:35,102 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:17:35,104 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:17:35,105 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:17:35,106 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product34.cil.c [2019-10-15 01:17:35,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7c63b4c6/229aff38be9444d1840abe1662b31361/FLAG9965aa02f [2019-10-15 01:17:35,859 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:17:35,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product34.cil.c [2019-10-15 01:17:35,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7c63b4c6/229aff38be9444d1840abe1662b31361/FLAG9965aa02f [2019-10-15 01:17:35,978 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7c63b4c6/229aff38be9444d1840abe1662b31361 [2019-10-15 01:17:35,988 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:17:35,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:17:35,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:17:35,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:17:35,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:17:35,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:17:35" (1/1) ... [2019-10-15 01:17:35,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7492c7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:35, skipping insertion in model container [2019-10-15 01:17:35,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:17:35" (1/1) ... [2019-10-15 01:17:36,007 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:17:36,085 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:17:36,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:17:36,930 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:17:37,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:17:37,165 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:17:37,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:37 WrapperNode [2019-10-15 01:17:37,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:17:37,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:17:37,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:17:37,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:17:37,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:37" (1/1) ... [2019-10-15 01:17:37,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:37" (1/1) ... [2019-10-15 01:17:37,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:37" (1/1) ... [2019-10-15 01:17:37,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:37" (1/1) ... [2019-10-15 01:17:37,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:37" (1/1) ... [2019-10-15 01:17:37,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:37" (1/1) ... [2019-10-15 01:17:37,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:37" (1/1) ... [2019-10-15 01:17:37,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:17:37,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:17:37,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:17:37,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:17:37,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:37" (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 01:17:37,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:17:37,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:17:37,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:17:37,462 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:17:37,463 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:17:37,463 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:17:37,463 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:17:37,463 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:17:37,463 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:17:37,464 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:17:37,464 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:17:37,464 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:17:37,464 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:17:37,464 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:17:37,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:17:37,465 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:17:37,465 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:17:37,465 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:17:37,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:17:37,465 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:17:37,466 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:17:37,467 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:17:37,468 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:17:37,468 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:17:37,468 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:17:37,468 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:17:37,468 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:17:37,468 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:17:37,468 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:17:37,468 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:17:37,469 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:17:37,469 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:17:37,469 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:17:37,469 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:17:37,469 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:17:37,469 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:17:37,470 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:17:37,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:17:37,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-15 01:17:37,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-15 01:17:37,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:17:37,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:17:37,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:17:37,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:17:37,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:17:37,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:17:37,472 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:17:37,472 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:17:37,472 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:17:37,472 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:17:37,472 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:17:37,472 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:17:37,472 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:17:37,473 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:17:37,473 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:17:37,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:17:37,473 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:17:37,473 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:17:37,473 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:17:37,474 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:17:37,474 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:17:37,474 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:17:37,474 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:17:37,475 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:17:37,475 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:17:37,475 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:17:37,475 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:17:37,475 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:17:37,475 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:17:37,476 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-15 01:17:37,476 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-15 01:17:37,476 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:17:37,476 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:17:37,477 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:17:37,477 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:17:37,477 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:17:37,477 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:17:37,477 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:17:37,477 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:17:37,478 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:17:37,479 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:17:37,479 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:17:37,479 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:17:37,479 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:17:37,479 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:17:37,480 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:17:37,480 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:17:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:17:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:17:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:17:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:17:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:17:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:17:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:17:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:17:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:17:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:17:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:17:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:17:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:17:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:17:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:17:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:17:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:17:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:17:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:17:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:17:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:17:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:17:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:17:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:17:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:17:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-15 01:17:37,485 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:17:37,485 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:17:37,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:17:37,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:17:37,485 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:17:37,486 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:17:37,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:17:37,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:17:37,486 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:17:37,486 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:17:37,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:17:37,487 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:17:37,488 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:17:37,488 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:17:37,488 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:17:37,488 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:17:37,488 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:17:37,488 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:17:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:17:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:17:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:17:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:17:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:17:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:17:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:17:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:17:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:17:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:17:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:17:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:17:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:17:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:17:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:17:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:17:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:17:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:17:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:17:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:17:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:17:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:17:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:17:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:17:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:17:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:17:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:17:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:17:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:17:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-15 01:17:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-15 01:17:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:17:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:17:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:17:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:17:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:17:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:17:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:17:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:17:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:17:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:17:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:17:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:17:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:17:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:17:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:17:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:17:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:17:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:17:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:17:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:17:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:17:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:17:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:17:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:17:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:17:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:17:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:17:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:17:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:17:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:17:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:17:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:17:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:17:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:17:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:17:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:17:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:17:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:17:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:17:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:17:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:17:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:17:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:17:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:17:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:17:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:17:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:17:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:17:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:17:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:17:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:17:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:17:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:17:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:17:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:17:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:17:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:17:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:17:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:17:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:17:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:17:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:17:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:17:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:17:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:17:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:17:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:17:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:17:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:17:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:17:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-15 01:17:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-15 01:17:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:17:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:17:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:17:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:17:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:17:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:17:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:17:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:17:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:17:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:17:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:17:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:17:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:17:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-15 01:17:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:17:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:17:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:17:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:17:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:17:39,716 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:17:39,716 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:17:39,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:17:39 BoogieIcfgContainer [2019-10-15 01:17:39,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:17:39,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:17:39,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:17:39,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:17:39,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:17:35" (1/3) ... [2019-10-15 01:17:39,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786310f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:17:39, skipping insertion in model container [2019-10-15 01:17:39,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:37" (2/3) ... [2019-10-15 01:17:39,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786310f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:17:39, skipping insertion in model container [2019-10-15 01:17:39,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:17:39" (3/3) ... [2019-10-15 01:17:39,736 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product34.cil.c [2019-10-15 01:17:39,748 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:17:39,759 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:17:39,772 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:17:39,819 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:17:39,819 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:17:39,819 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:17:39,822 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:17:39,822 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:17:39,823 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:17:39,823 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:17:39,823 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:17:39,872 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states. [2019-10-15 01:17:39,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-15 01:17:39,906 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:39,908 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:39,912 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:39,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:39,919 INFO L82 PathProgramCache]: Analyzing trace with hash -794584526, now seen corresponding path program 1 times [2019-10-15 01:17:39,930 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:39,930 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472481811] [2019-10-15 01:17:39,931 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:39,931 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:39,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:40,665 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 01:17:40,666 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472481811] [2019-10-15 01:17:40,667 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:40,668 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:17:40,668 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356526626] [2019-10-15 01:17:40,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:17:40,677 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:40,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:17:40,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:17:40,695 INFO L87 Difference]: Start difference. First operand 655 states. Second operand 2 states. [2019-10-15 01:17:40,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:40,835 INFO L93 Difference]: Finished difference Result 996 states and 1339 transitions. [2019-10-15 01:17:40,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:17:40,837 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 167 [2019-10-15 01:17:40,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:40,873 INFO L225 Difference]: With dead ends: 996 [2019-10-15 01:17:40,873 INFO L226 Difference]: Without dead ends: 626 [2019-10-15 01:17:40,881 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 01:17:40,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-15 01:17:40,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-15 01:17:40,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-15 01:17:41,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 848 transitions. [2019-10-15 01:17:41,005 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 848 transitions. Word has length 167 [2019-10-15 01:17:41,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:41,010 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 848 transitions. [2019-10-15 01:17:41,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:17:41,010 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 848 transitions. [2019-10-15 01:17:41,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-15 01:17:41,024 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:41,024 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:41,025 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:41,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:41,027 INFO L82 PathProgramCache]: Analyzing trace with hash -54617500, now seen corresponding path program 1 times [2019-10-15 01:17:41,027 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:41,027 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892158312] [2019-10-15 01:17:41,027 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:41,028 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:41,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:41,376 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 01:17:41,377 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892158312] [2019-10-15 01:17:41,377 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:41,377 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:41,377 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980411311] [2019-10-15 01:17:41,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:41,387 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:41,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:41,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:41,388 INFO L87 Difference]: Start difference. First operand 626 states and 848 transitions. Second operand 3 states. [2019-10-15 01:17:41,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:41,480 INFO L93 Difference]: Finished difference Result 979 states and 1304 transitions. [2019-10-15 01:17:41,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:41,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-10-15 01:17:41,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:41,493 INFO L225 Difference]: With dead ends: 979 [2019-10-15 01:17:41,493 INFO L226 Difference]: Without dead ends: 629 [2019-10-15 01:17:41,498 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 01:17:41,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-15 01:17:41,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2019-10-15 01:17:41,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-15 01:17:41,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 850 transitions. [2019-10-15 01:17:41,571 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 850 transitions. Word has length 168 [2019-10-15 01:17:41,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:41,573 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 850 transitions. [2019-10-15 01:17:41,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:41,573 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 850 transitions. [2019-10-15 01:17:41,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-15 01:17:41,578 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:41,578 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] [2019-10-15 01:17:41,578 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:41,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:41,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1390838960, now seen corresponding path program 1 times [2019-10-15 01:17:41,579 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:41,579 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805430850] [2019-10-15 01:17:41,580 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:41,580 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:41,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:41,843 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 01:17:41,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805430850] [2019-10-15 01:17:41,845 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:41,845 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:41,845 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672459723] [2019-10-15 01:17:41,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:41,853 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:41,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:41,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:41,854 INFO L87 Difference]: Start difference. First operand 628 states and 850 transitions. Second operand 3 states. [2019-10-15 01:17:41,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:41,915 INFO L93 Difference]: Finished difference Result 1234 states and 1701 transitions. [2019-10-15 01:17:41,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:41,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-10-15 01:17:41,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:41,929 INFO L225 Difference]: With dead ends: 1234 [2019-10-15 01:17:41,929 INFO L226 Difference]: Without dead ends: 671 [2019-10-15 01:17:41,933 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 01:17:41,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2019-10-15 01:17:41,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 670. [2019-10-15 01:17:41,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2019-10-15 01:17:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 922 transitions. [2019-10-15 01:17:41,988 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 922 transitions. Word has length 174 [2019-10-15 01:17:41,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:41,989 INFO L462 AbstractCegarLoop]: Abstraction has 670 states and 922 transitions. [2019-10-15 01:17:41,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:41,990 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 922 transitions. [2019-10-15 01:17:42,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-15 01:17:42,000 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:42,001 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] [2019-10-15 01:17:42,001 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:42,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:42,003 INFO L82 PathProgramCache]: Analyzing trace with hash -557359296, now seen corresponding path program 1 times [2019-10-15 01:17:42,003 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:42,003 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290448383] [2019-10-15 01:17:42,004 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:42,004 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:42,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:42,424 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 01:17:42,425 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290448383] [2019-10-15 01:17:42,425 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:42,425 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:42,425 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056983258] [2019-10-15 01:17:42,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:42,427 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:42,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:42,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:42,428 INFO L87 Difference]: Start difference. First operand 670 states and 922 transitions. Second operand 3 states. [2019-10-15 01:17:42,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:42,477 INFO L93 Difference]: Finished difference Result 1148 states and 1566 transitions. [2019-10-15 01:17:42,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:42,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-10-15 01:17:42,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:42,484 INFO L225 Difference]: With dead ends: 1148 [2019-10-15 01:17:42,484 INFO L226 Difference]: Without dead ends: 811 [2019-10-15 01:17:42,486 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 01:17:42,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2019-10-15 01:17:42,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 810. [2019-10-15 01:17:42,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2019-10-15 01:17:42,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1119 transitions. [2019-10-15 01:17:42,526 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1119 transitions. Word has length 175 [2019-10-15 01:17:42,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:42,527 INFO L462 AbstractCegarLoop]: Abstraction has 810 states and 1119 transitions. [2019-10-15 01:17:42,527 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:42,528 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1119 transitions. [2019-10-15 01:17:42,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2019-10-15 01:17:42,537 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:42,538 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:42,538 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:42,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:42,539 INFO L82 PathProgramCache]: Analyzing trace with hash -203609441, now seen corresponding path program 1 times [2019-10-15 01:17:42,539 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:42,539 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131543000] [2019-10-15 01:17:42,539 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:42,539 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:42,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-10-15 01:17:42,850 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131543000] [2019-10-15 01:17:42,850 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:42,851 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:17:42,851 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377618957] [2019-10-15 01:17:42,851 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:17:42,852 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:42,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:17:42,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:17:42,853 INFO L87 Difference]: Start difference. First operand 810 states and 1119 transitions. Second operand 6 states. [2019-10-15 01:17:43,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:43,652 INFO L93 Difference]: Finished difference Result 2010 states and 2769 transitions. [2019-10-15 01:17:43,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:17:43,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 320 [2019-10-15 01:17:43,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:43,666 INFO L225 Difference]: With dead ends: 2010 [2019-10-15 01:17:43,667 INFO L226 Difference]: Without dead ends: 1571 [2019-10-15 01:17:43,670 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:17:43,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2019-10-15 01:17:43,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1560. [2019-10-15 01:17:43,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2019-10-15 01:17:43,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 2174 transitions. [2019-10-15 01:17:43,770 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 2174 transitions. Word has length 320 [2019-10-15 01:17:43,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:43,771 INFO L462 AbstractCegarLoop]: Abstraction has 1560 states and 2174 transitions. [2019-10-15 01:17:43,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:17:43,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 2174 transitions. [2019-10-15 01:17:43,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2019-10-15 01:17:43,786 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:43,787 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:43,787 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:43,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:43,787 INFO L82 PathProgramCache]: Analyzing trace with hash 72654355, now seen corresponding path program 1 times [2019-10-15 01:17:43,788 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:43,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135012058] [2019-10-15 01:17:43,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:43,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:43,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:44,226 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-10-15 01:17:44,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135012058] [2019-10-15 01:17:44,227 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:44,227 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-15 01:17:44,228 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193997131] [2019-10-15 01:17:44,228 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:17:44,229 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:44,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:17:44,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:17:44,229 INFO L87 Difference]: Start difference. First operand 1560 states and 2174 transitions. Second operand 11 states. [2019-10-15 01:17:44,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:44,788 INFO L93 Difference]: Finished difference Result 2435 states and 3327 transitions. [2019-10-15 01:17:44,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:17:44,789 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 321 [2019-10-15 01:17:44,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:44,800 INFO L225 Difference]: With dead ends: 2435 [2019-10-15 01:17:44,800 INFO L226 Difference]: Without dead ends: 1534 [2019-10-15 01:17:44,805 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:17:44,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2019-10-15 01:17:44,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1530. [2019-10-15 01:17:44,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1530 states. [2019-10-15 01:17:44,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2123 transitions. [2019-10-15 01:17:44,904 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2123 transitions. Word has length 321 [2019-10-15 01:17:44,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:44,907 INFO L462 AbstractCegarLoop]: Abstraction has 1530 states and 2123 transitions. [2019-10-15 01:17:44,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:17:44,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2123 transitions. [2019-10-15 01:17:44,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2019-10-15 01:17:44,918 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:44,919 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:17:44,919 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:44,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:44,920 INFO L82 PathProgramCache]: Analyzing trace with hash 299496427, now seen corresponding path program 1 times [2019-10-15 01:17:44,923 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:44,924 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908199001] [2019-10-15 01:17:44,924 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:44,924 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:44,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:45,792 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-15 01:17:45,793 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908199001] [2019-10-15 01:17:45,793 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735386948] [2019-10-15 01:17:45,793 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 01:17:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:46,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 3856 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:17:46,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:47,141 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-15 01:17:47,142 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:47,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:17:48,048 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:48,142 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:48,304 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-15 01:17:48,305 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:17:48,305 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-15 01:17:48,306 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065596409] [2019-10-15 01:17:48,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:17:48,307 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:48,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:17:48,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:17:48,308 INFO L87 Difference]: Start difference. First operand 1530 states and 2123 transitions. Second operand 9 states. [2019-10-15 01:17:50,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:50,904 INFO L93 Difference]: Finished difference Result 3038 states and 4226 transitions. [2019-10-15 01:17:50,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:17:50,905 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 329 [2019-10-15 01:17:50,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:50,919 INFO L225 Difference]: With dead ends: 3038 [2019-10-15 01:17:50,919 INFO L226 Difference]: Without dead ends: 1544 [2019-10-15 01:17:50,928 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 647 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:17:50,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2019-10-15 01:17:51,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1544. [2019-10-15 01:17:51,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2019-10-15 01:17:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2141 transitions. [2019-10-15 01:17:51,052 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2141 transitions. Word has length 329 [2019-10-15 01:17:51,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:51,053 INFO L462 AbstractCegarLoop]: Abstraction has 1544 states and 2141 transitions. [2019-10-15 01:17:51,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:17:51,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2141 transitions. [2019-10-15 01:17:51,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2019-10-15 01:17:51,074 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:51,075 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:17:51,296 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:51,296 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:51,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:51,297 INFO L82 PathProgramCache]: Analyzing trace with hash -213296622, now seen corresponding path program 1 times [2019-10-15 01:17:51,297 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:51,297 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482458819] [2019-10-15 01:17:51,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:51,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:51,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:51,920 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-15 01:17:51,921 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482458819] [2019-10-15 01:17:51,921 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423388533] [2019-10-15 01:17:51,921 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 01:17:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:52,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 3857 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:17:52,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-15 01:17:52,945 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:53,538 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:53,610 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:53,748 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-15 01:17:53,748 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:17:53,749 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-15 01:17:53,749 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312792910] [2019-10-15 01:17:53,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:17:53,750 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:53,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:17:53,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:17:53,751 INFO L87 Difference]: Start difference. First operand 1544 states and 2141 transitions. Second operand 7 states. [2019-10-15 01:17:55,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:55,072 INFO L93 Difference]: Finished difference Result 3041 states and 4235 transitions. [2019-10-15 01:17:55,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:17:55,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2019-10-15 01:17:55,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:55,084 INFO L225 Difference]: With dead ends: 3041 [2019-10-15 01:17:55,084 INFO L226 Difference]: Without dead ends: 1548 [2019-10-15 01:17:55,093 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 654 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:17:55,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2019-10-15 01:17:55,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1548. [2019-10-15 01:17:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1548 states. [2019-10-15 01:17:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2146 transitions. [2019-10-15 01:17:55,180 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2146 transitions. Word has length 330 [2019-10-15 01:17:55,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:55,180 INFO L462 AbstractCegarLoop]: Abstraction has 1548 states and 2146 transitions. [2019-10-15 01:17:55,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:17:55,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2146 transitions. [2019-10-15 01:17:55,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2019-10-15 01:17:55,195 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:55,196 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:17:55,405 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:55,406 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:55,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:55,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1626429251, now seen corresponding path program 1 times [2019-10-15 01:17:55,406 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:55,406 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960097044] [2019-10-15 01:17:55,407 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:55,407 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:55,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:55,994 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-15 01:17:55,994 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960097044] [2019-10-15 01:17:55,995 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804521092] [2019-10-15 01:17:55,995 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 01:17:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:57,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 3858 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:17:57,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:57,320 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-15 01:17:57,320 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:58,082 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:17:58,170 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:58,261 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-15 01:17:58,949 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:17:58,949 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-15 01:17:58,950 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877216042] [2019-10-15 01:17:58,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:17:58,952 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:58,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:17:58,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-15 01:17:58,955 INFO L87 Difference]: Start difference. First operand 1548 states and 2146 transitions. Second operand 16 states. [2019-10-15 01:18:01,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:01,369 INFO L93 Difference]: Finished difference Result 3047 states and 4234 transitions. [2019-10-15 01:18:01,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:18:01,370 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 331 [2019-10-15 01:18:01,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:01,380 INFO L225 Difference]: With dead ends: 3047 [2019-10-15 01:18:01,381 INFO L226 Difference]: Without dead ends: 1560 [2019-10-15 01:18:01,391 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 651 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-15 01:18:01,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2019-10-15 01:18:01,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1558. [2019-10-15 01:18:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2019-10-15 01:18:01,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2157 transitions. [2019-10-15 01:18:01,460 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2157 transitions. Word has length 331 [2019-10-15 01:18:01,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:01,461 INFO L462 AbstractCegarLoop]: Abstraction has 1558 states and 2157 transitions. [2019-10-15 01:18:01,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:18:01,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2157 transitions. [2019-10-15 01:18:01,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2019-10-15 01:18:01,473 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:01,473 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:01,681 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:01,682 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:01,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:01,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1588193256, now seen corresponding path program 2 times [2019-10-15 01:18:01,683 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:01,683 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628563049] [2019-10-15 01:18:01,684 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:01,684 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:01,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:02,285 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-10-15 01:18:02,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628563049] [2019-10-15 01:18:02,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725326151] [2019-10-15 01:18:02,286 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 01:18:03,144 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:18:03,145 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:18:03,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:03,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:03,488 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-15 01:18:03,488 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:04,301 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:04,367 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:04,455 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-10-15 01:18:04,455 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:04,456 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-15 01:18:04,456 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679905239] [2019-10-15 01:18:04,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:18:04,457 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:04,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:18:04,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:18:04,458 INFO L87 Difference]: Start difference. First operand 1558 states and 2157 transitions. Second operand 12 states. [2019-10-15 01:18:06,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:06,034 INFO L93 Difference]: Finished difference Result 3038 states and 4222 transitions. [2019-10-15 01:18:06,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:18:06,035 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 332 [2019-10-15 01:18:06,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:06,045 INFO L225 Difference]: With dead ends: 3038 [2019-10-15 01:18:06,045 INFO L226 Difference]: Without dead ends: 1560 [2019-10-15 01:18:06,051 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 658 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:06,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2019-10-15 01:18:06,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1558. [2019-10-15 01:18:06,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2019-10-15 01:18:06,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2156 transitions. [2019-10-15 01:18:06,115 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2156 transitions. Word has length 332 [2019-10-15 01:18:06,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:06,116 INFO L462 AbstractCegarLoop]: Abstraction has 1558 states and 2156 transitions. [2019-10-15 01:18:06,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:18:06,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2156 transitions. [2019-10-15 01:18:06,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2019-10-15 01:18:06,131 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:06,132 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]