java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec9_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:19:02,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:19:02,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:19:02,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:19:02,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:19:02,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:19:02,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:19:02,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:19:02,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:19:02,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:19:02,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:19:02,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:19:02,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:19:02,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:19:02,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:19:02,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:19:02,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:19:02,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:19:02,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:19:02,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:19:02,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:19:02,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:19:02,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:19:02,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:19:02,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:19:02,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:19:02,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:19:02,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:19:02,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:19:02,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:19:02,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:19:02,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:19:02,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:19:02,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:19:02,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:19:02,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:19:02,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:19:02,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:19:02,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:19:02,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:19:02,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:19:02,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:19:02,702 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:19:02,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:19:02,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:19:02,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:19:02,705 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:19:02,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:19:02,706 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:19:02,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:19:02,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:19:02,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:19:02,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:19:02,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:19:02,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:19:02,709 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:19:02,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:19:02,709 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:19:02,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:19:02,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:19:02,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:19:02,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:19:02,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:19:02,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:19:02,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:19:02,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:19:02,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:19:02,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:19:02,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:19:02,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:19:02,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:19:02,986 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:19:03,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:19:03,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:19:03,013 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:19:03,013 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:19:03,014 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product20.cil.c [2019-10-13 21:19:03,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2831c0f32/b513933a9a7d4554b7d41030cd418e12/FLAG26aebe1dc [2019-10-13 21:19:03,758 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:19:03,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product20.cil.c [2019-10-13 21:19:03,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2831c0f32/b513933a9a7d4554b7d41030cd418e12/FLAG26aebe1dc [2019-10-13 21:19:03,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2831c0f32/b513933a9a7d4554b7d41030cd418e12 [2019-10-13 21:19:03,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:19:03,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:19:03,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:03,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:19:03,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:19:03,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:03" (1/1) ... [2019-10-13 21:19:03,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7babf457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:03, skipping insertion in model container [2019-10-13 21:19:03,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:03" (1/1) ... [2019-10-13 21:19:03,971 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:19:04,054 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:19:04,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:04,978 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:19:05,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:05,263 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:19:05,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05 WrapperNode [2019-10-13 21:19:05,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:05,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:19:05,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:19:05,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:19:05,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:19:05,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:19:05,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:19:05,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:19:05,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:19:05,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:19:05,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:19:05,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:05,585 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:19:05,585 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:19:05,585 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:19:05,586 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:19:05,586 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:19:05,586 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:19:05,586 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:05,587 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:19:05,587 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:05,587 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:19:05,587 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:19:05,587 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:19:05,588 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:19:05,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:19:05,588 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:19:05,588 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:19:05,589 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:19:05,589 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:19:05,590 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:19:05,590 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:19:05,590 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:19:05,591 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:19:05,591 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:19:05,591 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:19:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:19:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:19:05,594 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:19:05,594 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:19:05,594 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:19:05,594 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:19:05,594 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:19:05,595 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:19:05,595 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:19:05,595 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:19:05,595 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:19:05,595 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:19:05,595 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:19:05,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:19:05,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:19:05,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:19:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:19:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:19:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:19:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:19:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:19:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:19:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:19:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:19:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:19:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:19:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:19:05,599 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:19:05,599 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:19:05,599 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:19:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:19:05,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:19:05,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:19:05,601 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:19:05,601 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:19:05,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:19:05,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:19:05,602 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:19:05,602 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:19:05,602 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:19:05,603 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:19:05,603 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:19:05,604 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:19:05,604 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:19:05,604 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:19:05,604 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-13 21:19:05,604 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:19:05,605 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:19:05,605 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:19:05,605 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:19:05,605 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:19:05,605 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:19:05,605 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:19:05,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:19:05,606 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:19:05,606 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:19:05,606 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:19:05,606 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:19:05,607 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:19:05,607 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:19:05,607 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:19:05,609 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:19:05,609 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:19:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:19:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:19:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:19:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:19:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:19:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:19:05,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:19:05,611 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:19:05,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:19:05,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:19:05,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:19:05,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:19:05,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:19:05,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:19:05,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:19:05,612 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:19:05,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:19:05,613 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:19:05,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:19:05,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:19:05,613 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:19:05,613 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:19:05,614 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:19:05,614 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:19:05,614 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:19:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:19:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:19:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:19:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:19:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:19:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:19:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:19:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:19:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:19:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:19:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:19:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:19:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:19:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:19:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:19:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:19:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:19:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:19:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:19:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:19:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:19:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:19:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:19:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:19:05,627 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:19:05,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:19:05,629 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:19:05,629 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:19:05,629 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:19:05,629 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:19:05,629 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:19:05,629 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:19:05,629 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:19:05,630 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:19:05,630 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:19:05,630 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:19:05,630 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:19:05,630 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:19:05,630 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:05,630 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:19:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:19:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:19:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:19:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:19:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:19:05,632 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:19:05,632 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:19:05,632 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:19:05,632 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:19:05,633 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:19:05,633 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:19:05,633 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:19:05,633 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:19:05,633 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:19:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:19:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:19:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:19:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:19:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:19:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:19:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:19:05,634 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:19:05,635 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:19:05,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:05,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:19:05,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:19:05,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:19:05,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:19:05,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:05,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:19:05,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:05,636 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:05,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:19:05,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:19:05,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:19:05,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:19:05,636 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:19:05,637 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:19:05,637 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:19:05,637 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:19:05,637 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:19:05,637 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:19:05,637 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:19:05,638 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:19:05,638 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:19:05,639 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:19:05,639 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:19:05,639 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:19:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:19:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:19:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:19:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:19:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:19:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:19:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:19:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:19:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:19:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:19:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:19:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:19:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:19:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-13 21:19:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:19:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:19:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:19:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:19:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:19:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:19:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:19:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:19:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:19:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:19:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:19:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:19:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:19:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:19:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:19:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:19:07,882 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:19:07,883 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:19:07,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:07 BoogieIcfgContainer [2019-10-13 21:19:07,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:19:07,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:19:07,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:19:07,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:19:07,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:19:03" (1/3) ... [2019-10-13 21:19:07,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7419631e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:07, skipping insertion in model container [2019-10-13 21:19:07,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (2/3) ... [2019-10-13 21:19:07,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7419631e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:07, skipping insertion in model container [2019-10-13 21:19:07,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:07" (3/3) ... [2019-10-13 21:19:07,893 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product20.cil.c [2019-10-13 21:19:07,905 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:19:07,914 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:19:07,925 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:19:07,961 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:19:07,961 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:19:07,961 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:19:07,961 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:19:07,961 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:19:07,962 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:19:07,962 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:19:07,962 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:19:07,997 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states. [2019-10-13 21:19:08,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 21:19:08,031 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:08,033 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:08,035 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:08,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:08,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1483923005, now seen corresponding path program 1 times [2019-10-13 21:19:08,052 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:08,052 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390609397] [2019-10-13 21:19:08,053 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:08,053 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:08,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:08,664 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:08,665 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390609397] [2019-10-13 21:19:08,666 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:08,666 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:19:08,667 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559938971] [2019-10-13 21:19:08,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:19:08,674 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:08,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:19:08,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:19:08,692 INFO L87 Difference]: Start difference. First operand 563 states. Second operand 2 states. [2019-10-13 21:19:08,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:08,774 INFO L93 Difference]: Finished difference Result 764 states and 1044 transitions. [2019-10-13 21:19:08,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:19:08,776 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 154 [2019-10-13 21:19:08,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:08,821 INFO L225 Difference]: With dead ends: 764 [2019-10-13 21:19:08,823 INFO L226 Difference]: Without dead ends: 510 [2019-10-13 21:19:08,835 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:19:08,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2019-10-13 21:19:08,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2019-10-13 21:19:08,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2019-10-13 21:19:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 701 transitions. [2019-10-13 21:19:08,978 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 701 transitions. Word has length 154 [2019-10-13 21:19:08,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:08,982 INFO L462 AbstractCegarLoop]: Abstraction has 510 states and 701 transitions. [2019-10-13 21:19:08,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:19:08,983 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 701 transitions. [2019-10-13 21:19:08,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 21:19:08,994 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:08,994 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:08,994 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:08,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:08,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1309919830, now seen corresponding path program 1 times [2019-10-13 21:19:08,996 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:08,996 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536455365] [2019-10-13 21:19:08,997 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:08,997 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:08,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:09,277 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:09,277 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536455365] [2019-10-13 21:19:09,277 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:09,278 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:09,278 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136180100] [2019-10-13 21:19:09,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:09,283 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:09,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:09,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:09,284 INFO L87 Difference]: Start difference. First operand 510 states and 701 transitions. Second operand 3 states. [2019-10-13 21:19:09,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:09,352 INFO L93 Difference]: Finished difference Result 747 states and 1010 transitions. [2019-10-13 21:19:09,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:09,353 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-10-13 21:19:09,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:09,362 INFO L225 Difference]: With dead ends: 747 [2019-10-13 21:19:09,362 INFO L226 Difference]: Without dead ends: 513 [2019-10-13 21:19:09,364 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:09,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2019-10-13 21:19:09,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 512. [2019-10-13 21:19:09,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2019-10-13 21:19:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 703 transitions. [2019-10-13 21:19:09,421 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 703 transitions. Word has length 155 [2019-10-13 21:19:09,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:09,423 INFO L462 AbstractCegarLoop]: Abstraction has 512 states and 703 transitions. [2019-10-13 21:19:09,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:09,423 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 703 transitions. [2019-10-13 21:19:09,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 21:19:09,429 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:09,429 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] [2019-10-13 21:19:09,429 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:09,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:09,430 INFO L82 PathProgramCache]: Analyzing trace with hash 406210246, now seen corresponding path program 1 times [2019-10-13 21:19:09,430 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:09,430 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207177486] [2019-10-13 21:19:09,430 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:09,431 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:09,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:09,638 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207177486] [2019-10-13 21:19:09,638 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:09,638 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:09,638 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974686965] [2019-10-13 21:19:09,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:09,641 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:09,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:09,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:09,642 INFO L87 Difference]: Start difference. First operand 512 states and 703 transitions. Second operand 3 states. [2019-10-13 21:19:09,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:09,682 INFO L93 Difference]: Finished difference Result 1002 states and 1407 transitions. [2019-10-13 21:19:09,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:09,682 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-10-13 21:19:09,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:09,687 INFO L225 Difference]: With dead ends: 1002 [2019-10-13 21:19:09,687 INFO L226 Difference]: Without dead ends: 555 [2019-10-13 21:19:09,689 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:09,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2019-10-13 21:19:09,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 554. [2019-10-13 21:19:09,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-10-13 21:19:09,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 775 transitions. [2019-10-13 21:19:09,720 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 775 transitions. Word has length 165 [2019-10-13 21:19:09,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:09,721 INFO L462 AbstractCegarLoop]: Abstraction has 554 states and 775 transitions. [2019-10-13 21:19:09,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:09,721 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 775 transitions. [2019-10-13 21:19:09,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:19:09,726 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:09,726 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:09,726 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:09,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:09,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1441612235, now seen corresponding path program 1 times [2019-10-13 21:19:09,727 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:09,727 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102066449] [2019-10-13 21:19:09,727 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:09,728 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:09,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:09,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102066449] [2019-10-13 21:19:09,905 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:09,905 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:09,906 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490900341] [2019-10-13 21:19:09,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:09,907 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:09,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:09,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:09,907 INFO L87 Difference]: Start difference. First operand 554 states and 775 transitions. Second operand 3 states. [2019-10-13 21:19:09,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:09,952 INFO L93 Difference]: Finished difference Result 1125 states and 1618 transitions. [2019-10-13 21:19:09,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:09,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2019-10-13 21:19:09,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:09,959 INFO L225 Difference]: With dead ends: 1125 [2019-10-13 21:19:09,959 INFO L226 Difference]: Without dead ends: 636 [2019-10-13 21:19:09,962 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:09,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2019-10-13 21:19:10,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 635. [2019-10-13 21:19:10,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-10-13 21:19:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 913 transitions. [2019-10-13 21:19:10,008 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 913 transitions. Word has length 166 [2019-10-13 21:19:10,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:10,009 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 913 transitions. [2019-10-13 21:19:10,009 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:10,009 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 913 transitions. [2019-10-13 21:19:10,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-13 21:19:10,015 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:10,016 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] [2019-10-13 21:19:10,016 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:10,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:10,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1339391418, now seen corresponding path program 1 times [2019-10-13 21:19:10,017 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:10,017 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829443752] [2019-10-13 21:19:10,017 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,017 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:10,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829443752] [2019-10-13 21:19:10,288 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:10,288 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:10,288 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320576887] [2019-10-13 21:19:10,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:10,289 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:10,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:10,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:10,290 INFO L87 Difference]: Start difference. First operand 635 states and 913 transitions. Second operand 3 states. [2019-10-13 21:19:10,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:10,331 INFO L93 Difference]: Finished difference Result 1362 states and 2022 transitions. [2019-10-13 21:19:10,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:10,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2019-10-13 21:19:10,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:10,337 INFO L225 Difference]: With dead ends: 1362 [2019-10-13 21:19:10,338 INFO L226 Difference]: Without dead ends: 792 [2019-10-13 21:19:10,340 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:10,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2019-10-13 21:19:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 791. [2019-10-13 21:19:10,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2019-10-13 21:19:10,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1177 transitions. [2019-10-13 21:19:10,378 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1177 transitions. Word has length 167 [2019-10-13 21:19:10,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:10,378 INFO L462 AbstractCegarLoop]: Abstraction has 791 states and 1177 transitions. [2019-10-13 21:19:10,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:10,379 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1177 transitions. [2019-10-13 21:19:10,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-13 21:19:10,384 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:10,384 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] [2019-10-13 21:19:10,384 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:10,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:10,385 INFO L82 PathProgramCache]: Analyzing trace with hash 771079861, now seen corresponding path program 1 times [2019-10-13 21:19:10,385 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:10,385 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191604681] [2019-10-13 21:19:10,385 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,385 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:10,528 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191604681] [2019-10-13 21:19:10,529 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:10,529 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:10,529 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045008616] [2019-10-13 21:19:10,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:10,530 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:10,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:10,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:10,530 INFO L87 Difference]: Start difference. First operand 791 states and 1177 transitions. Second operand 3 states. [2019-10-13 21:19:10,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:10,586 INFO L93 Difference]: Finished difference Result 1818 states and 2794 transitions. [2019-10-13 21:19:10,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:10,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-10-13 21:19:10,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:10,594 INFO L225 Difference]: With dead ends: 1818 [2019-10-13 21:19:10,594 INFO L226 Difference]: Without dead ends: 1092 [2019-10-13 21:19:10,597 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:10,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2019-10-13 21:19:10,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1091. [2019-10-13 21:19:10,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2019-10-13 21:19:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1681 transitions. [2019-10-13 21:19:10,769 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1681 transitions. Word has length 168 [2019-10-13 21:19:10,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:10,771 INFO L462 AbstractCegarLoop]: Abstraction has 1091 states and 1681 transitions. [2019-10-13 21:19:10,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:10,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1681 transitions. [2019-10-13 21:19:10,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 21:19:10,781 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:10,781 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:10,781 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:10,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:10,782 INFO L82 PathProgramCache]: Analyzing trace with hash -846644512, now seen corresponding path program 1 times [2019-10-13 21:19:10,782 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:10,783 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437483029] [2019-10-13 21:19:10,783 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,783 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:19:11,043 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437483029] [2019-10-13 21:19:11,043 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:11,043 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:11,043 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499497158] [2019-10-13 21:19:11,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:11,044 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:11,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:11,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:11,045 INFO L87 Difference]: Start difference. First operand 1091 states and 1681 transitions. Second operand 3 states. [2019-10-13 21:19:11,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:11,102 INFO L93 Difference]: Finished difference Result 1426 states and 2141 transitions. [2019-10-13 21:19:11,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:11,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-13 21:19:11,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:11,111 INFO L225 Difference]: With dead ends: 1426 [2019-10-13 21:19:11,111 INFO L226 Difference]: Without dead ends: 1205 [2019-10-13 21:19:11,112 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:11,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2019-10-13 21:19:11,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1204. [2019-10-13 21:19:11,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2019-10-13 21:19:11,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1843 transitions. [2019-10-13 21:19:11,174 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1843 transitions. Word has length 171 [2019-10-13 21:19:11,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:11,175 INFO L462 AbstractCegarLoop]: Abstraction has 1204 states and 1843 transitions. [2019-10-13 21:19:11,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:11,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1843 transitions. [2019-10-13 21:19:11,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2019-10-13 21:19:11,184 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:11,184 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:11,185 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:11,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:11,185 INFO L82 PathProgramCache]: Analyzing trace with hash -528556357, now seen corresponding path program 1 times [2019-10-13 21:19:11,185 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:11,186 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422073323] [2019-10-13 21:19:11,186 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:11,186 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:11,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:11,490 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:19:11,491 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422073323] [2019-10-13 21:19:11,491 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:11,491 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:19:11,491 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137231534] [2019-10-13 21:19:11,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:19:11,492 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:11,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:19:11,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:19:11,494 INFO L87 Difference]: Start difference. First operand 1204 states and 1843 transitions. Second operand 6 states. [2019-10-13 21:19:12,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:12,200 INFO L93 Difference]: Finished difference Result 2682 states and 4084 transitions. [2019-10-13 21:19:12,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:19:12,201 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 295 [2019-10-13 21:19:12,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:12,218 INFO L225 Difference]: With dead ends: 2682 [2019-10-13 21:19:12,218 INFO L226 Difference]: Without dead ends: 2359 [2019-10-13 21:19:12,221 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:19:12,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2019-10-13 21:19:12,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2348. [2019-10-13 21:19:12,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2348 states. [2019-10-13 21:19:12,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 3636 transitions. [2019-10-13 21:19:12,384 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 3636 transitions. Word has length 295 [2019-10-13 21:19:12,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:12,385 INFO L462 AbstractCegarLoop]: Abstraction has 2348 states and 3636 transitions. [2019-10-13 21:19:12,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:19:12,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 3636 transitions. [2019-10-13 21:19:12,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2019-10-13 21:19:12,405 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:12,406 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:12,407 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:12,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:12,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1922537697, now seen corresponding path program 1 times [2019-10-13 21:19:12,408 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:12,408 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849015436] [2019-10-13 21:19:12,408 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:12,409 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:12,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:19:12,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849015436] [2019-10-13 21:19:12,757 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:12,757 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:19:12,758 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939759128] [2019-10-13 21:19:12,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:19:12,759 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:12,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:19:12,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:19:12,760 INFO L87 Difference]: Start difference. First operand 2348 states and 3636 transitions. Second operand 9 states. [2019-10-13 21:19:13,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:13,200 INFO L93 Difference]: Finished difference Result 2991 states and 4495 transitions. [2019-10-13 21:19:13,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:19:13,201 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 296 [2019-10-13 21:19:13,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:13,220 INFO L225 Difference]: With dead ends: 2991 [2019-10-13 21:19:13,220 INFO L226 Difference]: Without dead ends: 2322 [2019-10-13 21:19:13,225 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:19:13,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2019-10-13 21:19:13,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 2318. [2019-10-13 21:19:13,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2318 states. [2019-10-13 21:19:13,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 3585 transitions. [2019-10-13 21:19:13,373 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 3585 transitions. Word has length 296 [2019-10-13 21:19:13,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:13,374 INFO L462 AbstractCegarLoop]: Abstraction has 2318 states and 3585 transitions. [2019-10-13 21:19:13,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:19:13,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 3585 transitions. [2019-10-13 21:19:13,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2019-10-13 21:19:13,394 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:13,394 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:13,394 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:13,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:13,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1501375971, now seen corresponding path program 1 times [2019-10-13 21:19:13,395 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:13,396 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157701232] [2019-10-13 21:19:13,396 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:13,396 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:13,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:13,989 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:19:13,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157701232] [2019-10-13 21:19:13,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478042105] [2019-10-13 21:19:13,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:14,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 3330 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:14,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-13 21:19:15,027 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:15,709 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:15,818 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:15,922 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:16,175 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:16,175 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-13 21:19:16,175 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649473186] [2019-10-13 21:19:16,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:19:16,181 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:16,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:19:16,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:16,183 INFO L87 Difference]: Start difference. First operand 2318 states and 3585 transitions. Second operand 9 states. [2019-10-13 21:19:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:17,744 INFO L93 Difference]: Finished difference Result 4614 states and 7150 transitions. [2019-10-13 21:19:17,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:19:17,745 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 289 [2019-10-13 21:19:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:17,760 INFO L225 Difference]: With dead ends: 4614 [2019-10-13 21:19:17,761 INFO L226 Difference]: Without dead ends: 2332 [2019-10-13 21:19:17,771 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 567 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:19:17,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2019-10-13 21:19:17,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 2332. [2019-10-13 21:19:17,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2019-10-13 21:19:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3603 transitions. [2019-10-13 21:19:17,913 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3603 transitions. Word has length 289 [2019-10-13 21:19:17,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:17,913 INFO L462 AbstractCegarLoop]: Abstraction has 2332 states and 3603 transitions. [2019-10-13 21:19:17,914 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:19:17,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3603 transitions. [2019-10-13 21:19:17,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2019-10-13 21:19:17,931 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:17,931 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:18,150 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:18,151 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:18,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:18,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1523993304, now seen corresponding path program 1 times [2019-10-13 21:19:18,151 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:18,152 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358716454] [2019-10-13 21:19:18,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:18,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:18,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:19:18,836 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358716454] [2019-10-13 21:19:18,837 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856377703] [2019-10-13 21:19:18,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:19,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 3331 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:19,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-13 21:19:19,901 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:20,531 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:20,640 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:20,721 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:20,721 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-13 21:19:20,721 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58213307] [2019-10-13 21:19:20,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:19:20,723 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:20,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:19:20,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:20,723 INFO L87 Difference]: Start difference. First operand 2332 states and 3603 transitions. Second operand 7 states. [2019-10-13 21:19:21,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:21,798 INFO L93 Difference]: Finished difference Result 4617 states and 7171 transitions. [2019-10-13 21:19:21,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:19:21,799 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2019-10-13 21:19:21,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:21,814 INFO L225 Difference]: With dead ends: 4617 [2019-10-13 21:19:21,815 INFO L226 Difference]: Without dead ends: 2336 [2019-10-13 21:19:21,827 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 574 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:19:21,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2019-10-13 21:19:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 2336. [2019-10-13 21:19:21,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2336 states. [2019-10-13 21:19:21,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3608 transitions. [2019-10-13 21:19:21,957 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3608 transitions. Word has length 290 [2019-10-13 21:19:21,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:21,957 INFO L462 AbstractCegarLoop]: Abstraction has 2336 states and 3608 transitions. [2019-10-13 21:19:21,957 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:19:21,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3608 transitions. [2019-10-13 21:19:21,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2019-10-13 21:19:21,974 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:21,974 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:22,184 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:22,185 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:22,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:22,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1588016139, now seen corresponding path program 1 times [2019-10-13 21:19:22,186 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:22,186 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232794782] [2019-10-13 21:19:22,186 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:22,186 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:22,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:22,780 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:19:22,780 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232794782] [2019-10-13 21:19:22,781 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648334859] [2019-10-13 21:19:22,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:23,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 3332 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:23,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:23,665 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:19:23,666 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:24,198 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:24,286 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:24,370 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:24,632 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:24,632 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-13 21:19:24,633 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738927331] [2019-10-13 21:19:24,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:19:24,634 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:24,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:19:24,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:19:24,634 INFO L87 Difference]: Start difference. First operand 2336 states and 3608 transitions. Second operand 16 states. [2019-10-13 21:19:26,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:26,270 INFO L93 Difference]: Finished difference Result 4623 states and 7158 transitions. [2019-10-13 21:19:26,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:26,271 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 291 [2019-10-13 21:19:26,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:26,286 INFO L225 Difference]: With dead ends: 4623 [2019-10-13 21:19:26,286 INFO L226 Difference]: Without dead ends: 2348 [2019-10-13 21:19:26,296 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 571 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:19:26,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2019-10-13 21:19:26,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2346. [2019-10-13 21:19:26,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2346 states. [2019-10-13 21:19:26,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3619 transitions. [2019-10-13 21:19:26,399 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3619 transitions. Word has length 291 [2019-10-13 21:19:26,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:26,400 INFO L462 AbstractCegarLoop]: Abstraction has 2346 states and 3619 transitions. [2019-10-13 21:19:26,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:19:26,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3619 transitions. [2019-10-13 21:19:26,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2019-10-13 21:19:26,415 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:26,416 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:26,624 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:26,625 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:26,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:26,626 INFO L82 PathProgramCache]: Analyzing trace with hash 153111168, now seen corresponding path program 2 times [2019-10-13 21:19:26,626 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:26,627 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333586167] [2019-10-13 21:19:26,627 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:26,627 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:26,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-13 21:19:27,022 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333586167] [2019-10-13 21:19:27,022 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557373941] [2019-10-13 21:19:27,023 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:27,776 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:19:27,776 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:27,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:27,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:19:28,076 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:28,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:28,938 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 21:19:29,028 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:29,029 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-13 21:19:29,029 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539616023] [2019-10-13 21:19:29,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:19:29,035 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:29,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:19:29,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:19:29,036 INFO L87 Difference]: Start difference. First operand 2346 states and 3619 transitions. Second operand 12 states. [2019-10-13 21:19:30,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:30,825 INFO L93 Difference]: Finished difference Result 4614 states and 7146 transitions. [2019-10-13 21:19:30,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:19:30,826 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 292 [2019-10-13 21:19:30,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:30,840 INFO L225 Difference]: With dead ends: 4614 [2019-10-13 21:19:30,840 INFO L226 Difference]: Without dead ends: 2348 [2019-10-13 21:19:30,848 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 578 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:30,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2019-10-13 21:19:30,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2346. [2019-10-13 21:19:30,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2346 states. [2019-10-13 21:19:30,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3618 transitions. [2019-10-13 21:19:30,953 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3618 transitions. Word has length 292 [2019-10-13 21:19:30,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:30,954 INFO L462 AbstractCegarLoop]: Abstraction has 2346 states and 3618 transitions. [2019-10-13 21:19:30,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:19:30,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3618 transitions. [2019-10-13 21:19:30,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2019-10-13 21:19:30,969 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:30,970 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:31,189 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:31,189 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:31,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:31,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1516843795, now seen corresponding path program 3 times [2019-10-13 21:19:31,190 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:31,190 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185444375] [2019-10-13 21:19:31,190 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:31,190 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:31,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:31,639 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:31,639 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185444375] [2019-10-13 21:19:31,639 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343175311] [2019-10-13 21:19:31,639 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:32,270 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:19:32,270 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:32,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 2678 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:32,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:19:32,533 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:33,153 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:33,237 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:33,313 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:33,460 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 21:19:33,460 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:33,460 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-13 21:19:33,461 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909477935] [2019-10-13 21:19:33,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:19:33,462 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:33,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:19:33,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:33,463 INFO L87 Difference]: Start difference. First operand 2346 states and 3618 transitions. Second operand 15 states. [2019-10-13 21:19:34,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:34,904 INFO L93 Difference]: Finished difference Result 4621 states and 7153 transitions. [2019-10-13 21:19:34,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:34,906 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 293 [2019-10-13 21:19:34,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:34,920 INFO L225 Difference]: With dead ends: 4621 [2019-10-13 21:19:34,921 INFO L226 Difference]: Without dead ends: 2350 [2019-10-13 21:19:34,928 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 575 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:19:34,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2019-10-13 21:19:35,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2346. [2019-10-13 21:19:35,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2346 states. [2019-10-13 21:19:35,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3617 transitions. [2019-10-13 21:19:35,021 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3617 transitions. Word has length 293 [2019-10-13 21:19:35,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:35,021 INFO L462 AbstractCegarLoop]: Abstraction has 2346 states and 3617 transitions. [2019-10-13 21:19:35,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:19:35,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3617 transitions. [2019-10-13 21:19:35,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2019-10-13 21:19:35,031 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:35,033 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:35,240 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:35,240 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:35,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:35,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1103060653, now seen corresponding path program 1 times [2019-10-13 21:19:35,241 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:35,241 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810924256] [2019-10-13 21:19:35,242 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:35,242 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:35,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:35,685 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810924256] [2019-10-13 21:19:35,685 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642573711] [2019-10-13 21:19:35,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:36,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 3335 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:36,501 INFO L279 TraceCheckSpWp]: Computing forward predicates...