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_spec3_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:15:54,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:15:54,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:15:54,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:15:54,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:15:54,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:15:54,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:15:54,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:15:54,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:15:54,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:15:54,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:15:54,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:15:54,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:15:54,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:15:54,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:15:54,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:15:54,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:15:54,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:15:54,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:15:54,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:15:54,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:15:54,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:15:54,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:15:54,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:15:54,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:15:54,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:15:54,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:15:54,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:15:54,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:15:54,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:15:54,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:15:54,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:15:54,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:15:54,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:15:54,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:15:54,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:15:54,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:15:54,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:15:54,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:15:54,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:15:54,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:15:54,755 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 21:15:54,772 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:15:54,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:15:54,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:15:54,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:15:54,774 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:15:54,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:15:54,774 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:15:54,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:15:54,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:15:54,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:15:54,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:15:54,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:15:54,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:15:54,775 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:15:54,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:15:54,776 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:15:54,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:15:54,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:15:54,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:15:54,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:15:54,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:15:54,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:54,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:15:54,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:15:54,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:15:54,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:15:54,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:15:54,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:15:54,778 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 21:15:55,081 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:15:55,096 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:15:55,102 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:15:55,104 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:15:55,105 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:15:55,105 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product32.cil.c [2019-10-13 21:15:55,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f9859e50/e717dcb64d7a4780a2448451d7f11565/FLAGdb762a794 [2019-10-13 21:15:55,881 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:15:55,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product32.cil.c [2019-10-13 21:15:55,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f9859e50/e717dcb64d7a4780a2448451d7f11565/FLAGdb762a794 [2019-10-13 21:15:56,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f9859e50/e717dcb64d7a4780a2448451d7f11565 [2019-10-13 21:15:56,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:15:56,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:15:56,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:56,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:15:56,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:15:56,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:56" (1/1) ... [2019-10-13 21:15:56,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ff5150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:56, skipping insertion in model container [2019-10-13 21:15:56,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:56" (1/1) ... [2019-10-13 21:15:56,051 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:15:56,141 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:15:56,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:56,954 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:15:57,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:57,191 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:15:57,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57 WrapperNode [2019-10-13 21:15:57,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:57,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:15:57,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:15:57,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:15:57,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57" (1/1) ... [2019-10-13 21:15:57,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57" (1/1) ... [2019-10-13 21:15:57,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57" (1/1) ... [2019-10-13 21:15:57,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57" (1/1) ... [2019-10-13 21:15:57,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57" (1/1) ... [2019-10-13 21:15:57,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57" (1/1) ... [2019-10-13 21:15:57,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57" (1/1) ... [2019-10-13 21:15:57,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:15:57,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:15:57,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:15:57,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:15:57,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57" (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 21:15:57,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:15:57,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:15:57,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:57,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:15:57,493 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:15:57,494 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:15:57,495 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:15:57,495 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:15:57,496 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:15:57,496 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:15:57,497 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:15:57,497 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:15:57,497 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:15:57,498 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:15:57,499 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:15:57,499 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:15:57,500 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:15:57,500 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:15:57,501 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:15:57,501 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:15:57,501 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:15:57,501 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:15:57,502 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:15:57,502 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:15:57,502 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:15:57,502 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:15:57,502 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:15:57,502 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:15:57,503 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:15:57,503 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:15:57,503 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:15:57,503 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:15:57,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:57,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:57,504 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:15:57,504 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:15:57,504 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:15:57,504 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:15:57,504 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:15:57,504 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:15:57,504 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:15:57,505 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:15:57,505 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:15:57,505 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:15:57,505 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:15:57,505 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:15:57,505 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:15:57,505 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:15:57,506 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:15:57,506 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:15:57,506 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:15:57,506 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:15:57,506 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:15:57,506 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:15:57,506 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:15:57,507 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:15:57,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:15:57,507 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:15:57,507 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:15:57,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:15:57,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:15:57,508 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:15:57,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:15:57,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:15:57,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:15:57,509 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:57,509 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:15:57,509 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:57,509 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:15:57,509 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:15:57,510 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:15:57,510 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:15:57,510 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:15:57,510 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:15:57,510 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:15:57,511 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:15:57,511 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:15:57,511 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:15:57,511 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:15:57,511 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:15:57,512 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:15:57,512 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:15:57,512 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:15:57,512 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:15:57,512 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:15:57,512 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:15:57,513 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:15:57,513 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:15:57,513 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:15:57,513 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:15:57,513 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:15:57,513 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:15:57,513 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:15:57,514 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:15:57,514 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:15:57,514 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:15:57,514 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:15:57,514 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:15:57,515 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:15:57,515 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:15:57,515 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:15:57,515 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:15:57,515 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:15:57,516 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:15:57,516 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:15:57,516 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:15:57,516 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:15:57,516 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:15:57,516 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:15:57,517 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:15:57,517 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:15:57,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:15:57,517 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:15:57,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:57,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:57,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:57,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:15:57,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:15:57,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:15:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:15:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:15:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:15:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:15:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:15:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:15:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:15:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:15:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:15:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:15:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:15:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:15:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:15:57,521 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:15:57,521 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:15:57,521 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:15:57,521 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:15:57,521 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:15:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:15:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:15:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:15:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:15:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:15:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:15:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:15:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:15:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:15:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:15:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:15:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:15:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:15:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:15:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:15:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:15:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:15:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:15:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:15:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:15:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:15:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:15:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:15:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:15:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:15:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:15:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:15:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:15:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:15:57,527 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:15:57,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:57,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:15:57,527 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:15:57,527 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:15:57,528 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:15:57,528 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:15:57,528 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:15:57,528 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:15:57,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:57,528 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:15:57,529 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:15:57,529 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:15:57,529 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:15:57,529 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:15:57,529 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:15:57,529 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:15:57,530 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:15:57,530 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:15:57,530 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:15:57,530 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:15:57,530 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:15:57,530 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:15:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:15:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:15:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:15:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:15:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:15:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:15:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:15:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:15:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:15:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:15:57,533 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:15:57,533 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:15:57,533 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:15:57,533 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:15:57,533 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:15:57,533 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:15:57,533 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:15:57,534 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:15:57,534 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:15:57,534 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:15:57,534 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:15:57,534 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:15:57,534 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:15:57,535 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:15:57,535 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:15:57,535 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:15:57,535 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:15:57,535 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:15:57,535 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:15:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:15:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:15:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:15:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:15:57,537 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:15:57,537 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:15:57,537 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:15:57,537 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:15:57,537 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:15:57,537 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:15:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:15:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:15:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:15:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:15:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:15:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:15:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:15:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:15:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:15:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:15:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:15:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:15:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:15:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:15:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:15:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:15:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:15:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:15:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:16:00,083 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:16:00,083 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:16:00,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:00 BoogieIcfgContainer [2019-10-13 21:16:00,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:16:00,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:16:00,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:16:00,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:16:00,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:15:56" (1/3) ... [2019-10-13 21:16:00,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2170f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:00, skipping insertion in model container [2019-10-13 21:16:00,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57" (2/3) ... [2019-10-13 21:16:00,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2170f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:00, skipping insertion in model container [2019-10-13 21:16:00,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:00" (3/3) ... [2019-10-13 21:16:00,095 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product32.cil.c [2019-10-13 21:16:00,106 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:16:00,116 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:16:00,129 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:16:00,170 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:16:00,171 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:16:00,172 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:16:00,180 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:16:00,180 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:16:00,180 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:16:00,180 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:16:00,180 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:16:00,224 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states. [2019-10-13 21:16:00,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:16:00,259 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:00,262 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:00,266 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:00,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:00,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1590085758, now seen corresponding path program 1 times [2019-10-13 21:16:00,283 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:00,284 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495702054] [2019-10-13 21:16:00,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:00,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:00,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:01,020 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495702054] [2019-10-13 21:16:01,021 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:01,021 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:16:01,021 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774427994] [2019-10-13 21:16:01,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:16:01,028 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:01,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:16:01,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:01,046 INFO L87 Difference]: Start difference. First operand 649 states. Second operand 2 states. [2019-10-13 21:16:01,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:01,187 INFO L93 Difference]: Finished difference Result 928 states and 1264 transitions. [2019-10-13 21:16:01,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:16:01,189 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 204 [2019-10-13 21:16:01,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:01,227 INFO L225 Difference]: With dead ends: 928 [2019-10-13 21:16:01,228 INFO L226 Difference]: Without dead ends: 592 [2019-10-13 21:16:01,240 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 21:16:01,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-10-13 21:16:01,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2019-10-13 21:16:01,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-10-13 21:16:01,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 808 transitions. [2019-10-13 21:16:01,381 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 808 transitions. Word has length 204 [2019-10-13 21:16:01,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:01,386 INFO L462 AbstractCegarLoop]: Abstraction has 592 states and 808 transitions. [2019-10-13 21:16:01,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:16:01,386 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 808 transitions. [2019-10-13 21:16:01,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-13 21:16:01,396 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:01,396 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:01,397 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:01,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:01,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1142276697, now seen corresponding path program 1 times [2019-10-13 21:16:01,398 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:01,398 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661598035] [2019-10-13 21:16:01,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:01,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:01,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:01,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661598035] [2019-10-13 21:16:01,743 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:01,743 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:01,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786541962] [2019-10-13 21:16:01,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:01,753 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:01,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:01,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:01,754 INFO L87 Difference]: Start difference. First operand 592 states and 808 transitions. Second operand 3 states. [2019-10-13 21:16:01,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:01,828 INFO L93 Difference]: Finished difference Result 911 states and 1224 transitions. [2019-10-13 21:16:01,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:01,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2019-10-13 21:16:01,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:01,839 INFO L225 Difference]: With dead ends: 911 [2019-10-13 21:16:01,839 INFO L226 Difference]: Without dead ends: 595 [2019-10-13 21:16:01,841 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 21:16:01,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-13 21:16:01,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 594. [2019-10-13 21:16:01,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2019-10-13 21:16:01,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 810 transitions. [2019-10-13 21:16:01,878 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 810 transitions. Word has length 205 [2019-10-13 21:16:01,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:01,879 INFO L462 AbstractCegarLoop]: Abstraction has 594 states and 810 transitions. [2019-10-13 21:16:01,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:01,880 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 810 transitions. [2019-10-13 21:16:01,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-10-13 21:16:01,886 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:01,886 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:01,886 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:01,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:01,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1211358665, now seen corresponding path program 1 times [2019-10-13 21:16:01,887 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:01,887 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069452374] [2019-10-13 21:16:01,887 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:01,888 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:01,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:02,157 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069452374] [2019-10-13 21:16:02,157 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:02,157 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:02,157 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592882940] [2019-10-13 21:16:02,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:02,161 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:02,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:02,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:02,162 INFO L87 Difference]: Start difference. First operand 594 states and 810 transitions. Second operand 3 states. [2019-10-13 21:16:02,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:02,222 INFO L93 Difference]: Finished difference Result 1166 states and 1621 transitions. [2019-10-13 21:16:02,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:02,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2019-10-13 21:16:02,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:02,233 INFO L225 Difference]: With dead ends: 1166 [2019-10-13 21:16:02,233 INFO L226 Difference]: Without dead ends: 637 [2019-10-13 21:16:02,236 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 21:16:02,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2019-10-13 21:16:02,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 636. [2019-10-13 21:16:02,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2019-10-13 21:16:02,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 882 transitions. [2019-10-13 21:16:02,287 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 882 transitions. Word has length 215 [2019-10-13 21:16:02,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:02,289 INFO L462 AbstractCegarLoop]: Abstraction has 636 states and 882 transitions. [2019-10-13 21:16:02,292 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:02,293 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 882 transitions. [2019-10-13 21:16:02,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-13 21:16:02,301 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:02,301 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:02,302 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:02,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:02,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1000729200, now seen corresponding path program 1 times [2019-10-13 21:16:02,305 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:02,305 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978202537] [2019-10-13 21:16:02,306 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:02,306 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:02,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:02,743 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:02,744 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978202537] [2019-10-13 21:16:02,744 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:02,744 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:02,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622009926] [2019-10-13 21:16:02,745 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:02,745 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:02,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:02,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:02,746 INFO L87 Difference]: Start difference. First operand 636 states and 882 transitions. Second operand 3 states. [2019-10-13 21:16:02,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:02,788 INFO L93 Difference]: Finished difference Result 1289 states and 1832 transitions. [2019-10-13 21:16:02,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:02,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2019-10-13 21:16:02,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:02,795 INFO L225 Difference]: With dead ends: 1289 [2019-10-13 21:16:02,795 INFO L226 Difference]: Without dead ends: 718 [2019-10-13 21:16:02,798 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 21:16:02,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2019-10-13 21:16:02,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 717. [2019-10-13 21:16:02,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-10-13 21:16:02,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1020 transitions. [2019-10-13 21:16:02,832 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1020 transitions. Word has length 216 [2019-10-13 21:16:02,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:02,832 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1020 transitions. [2019-10-13 21:16:02,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:02,832 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1020 transitions. [2019-10-13 21:16:02,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-13 21:16:02,838 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:02,838 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:02,839 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:02,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:02,839 INFO L82 PathProgramCache]: Analyzing trace with hash -562030519, now seen corresponding path program 1 times [2019-10-13 21:16:02,839 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:02,840 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057445357] [2019-10-13 21:16:02,840 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:02,841 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:02,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:03,029 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057445357] [2019-10-13 21:16:03,029 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:03,029 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:03,030 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931902072] [2019-10-13 21:16:03,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:03,030 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:03,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:03,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:03,031 INFO L87 Difference]: Start difference. First operand 717 states and 1020 transitions. Second operand 3 states. [2019-10-13 21:16:03,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:03,072 INFO L93 Difference]: Finished difference Result 1526 states and 2236 transitions. [2019-10-13 21:16:03,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:03,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2019-10-13 21:16:03,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:03,079 INFO L225 Difference]: With dead ends: 1526 [2019-10-13 21:16:03,079 INFO L226 Difference]: Without dead ends: 874 [2019-10-13 21:16:03,083 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 21:16:03,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2019-10-13 21:16:03,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 873. [2019-10-13 21:16:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 873 states. [2019-10-13 21:16:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1284 transitions. [2019-10-13 21:16:03,217 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1284 transitions. Word has length 217 [2019-10-13 21:16:03,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:03,218 INFO L462 AbstractCegarLoop]: Abstraction has 873 states and 1284 transitions. [2019-10-13 21:16:03,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:03,218 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1284 transitions. [2019-10-13 21:16:03,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-13 21:16:03,226 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:03,227 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:03,227 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:03,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:03,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1445317616, now seen corresponding path program 1 times [2019-10-13 21:16:03,228 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:03,228 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654720048] [2019-10-13 21:16:03,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:03,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:03,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:03,504 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:03,505 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654720048] [2019-10-13 21:16:03,506 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:03,506 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:03,507 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802977544] [2019-10-13 21:16:03,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:03,508 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:03,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:03,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:03,509 INFO L87 Difference]: Start difference. First operand 873 states and 1284 transitions. Second operand 3 states. [2019-10-13 21:16:03,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:03,578 INFO L93 Difference]: Finished difference Result 1982 states and 3008 transitions. [2019-10-13 21:16:03,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:03,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2019-10-13 21:16:03,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:03,586 INFO L225 Difference]: With dead ends: 1982 [2019-10-13 21:16:03,586 INFO L226 Difference]: Without dead ends: 1174 [2019-10-13 21:16:03,593 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 21:16:03,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2019-10-13 21:16:03,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1173. [2019-10-13 21:16:03,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2019-10-13 21:16:03,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1788 transitions. [2019-10-13 21:16:03,648 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1788 transitions. Word has length 218 [2019-10-13 21:16:03,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:03,650 INFO L462 AbstractCegarLoop]: Abstraction has 1173 states and 1788 transitions. [2019-10-13 21:16:03,650 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:03,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1788 transitions. [2019-10-13 21:16:03,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-10-13 21:16:03,657 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:03,657 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:03,658 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:03,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:03,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1665385988, now seen corresponding path program 1 times [2019-10-13 21:16:03,658 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:03,658 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312836467] [2019-10-13 21:16:03,659 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:03,659 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:03,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:04,235 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:04,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312836467] [2019-10-13 21:16:04,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854797647] [2019-10-13 21:16:04,236 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 21:16:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:04,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 3238 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:04,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:05,327 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:05,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:05,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:05,908 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:06,074 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:06,075 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-13 21:16:06,075 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230650120] [2019-10-13 21:16:06,076 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:16:06,076 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:06,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:16:06,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:16:06,078 INFO L87 Difference]: Start difference. First operand 1173 states and 1788 transitions. Second operand 9 states. [2019-10-13 21:16:07,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:07,707 INFO L93 Difference]: Finished difference Result 2324 states and 3556 transitions. [2019-10-13 21:16:07,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:16:07,707 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 221 [2019-10-13 21:16:07,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:07,714 INFO L225 Difference]: With dead ends: 2324 [2019-10-13 21:16:07,714 INFO L226 Difference]: Without dead ends: 1187 [2019-10-13 21:16:07,718 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 431 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:16:07,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2019-10-13 21:16:07,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1187. [2019-10-13 21:16:07,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1187 states. [2019-10-13 21:16:07,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1806 transitions. [2019-10-13 21:16:07,781 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1806 transitions. Word has length 221 [2019-10-13 21:16:07,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:07,782 INFO L462 AbstractCegarLoop]: Abstraction has 1187 states and 1806 transitions. [2019-10-13 21:16:07,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:16:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1806 transitions. [2019-10-13 21:16:07,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-10-13 21:16:07,794 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:07,795 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:08,003 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:08,004 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:08,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:08,005 INFO L82 PathProgramCache]: Analyzing trace with hash 676180806, now seen corresponding path program 1 times [2019-10-13 21:16:08,005 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:08,005 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994072909] [2019-10-13 21:16:08,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:08,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:08,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:08,669 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:08,669 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994072909] [2019-10-13 21:16:08,670 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204556411] [2019-10-13 21:16:08,670 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 21:16:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:09,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 3239 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:09,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:09,647 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:09,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:10,007 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:10,068 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:10,068 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:10,068 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-13 21:16:10,069 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389906488] [2019-10-13 21:16:10,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:10,070 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:10,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:10,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:10,071 INFO L87 Difference]: Start difference. First operand 1187 states and 1806 transitions. Second operand 7 states. [2019-10-13 21:16:11,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:11,690 INFO L93 Difference]: Finished difference Result 2325 states and 3566 transitions. [2019-10-13 21:16:11,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:11,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2019-10-13 21:16:11,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:11,700 INFO L225 Difference]: With dead ends: 2325 [2019-10-13 21:16:11,701 INFO L226 Difference]: Without dead ends: 1189 [2019-10-13 21:16:11,707 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 438 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:16:11,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2019-10-13 21:16:11,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2019-10-13 21:16:11,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1189 states. [2019-10-13 21:16:11,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1809 transitions. [2019-10-13 21:16:11,761 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1809 transitions. Word has length 222 [2019-10-13 21:16:11,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:11,761 INFO L462 AbstractCegarLoop]: Abstraction has 1189 states and 1809 transitions. [2019-10-13 21:16:11,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:11,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1809 transitions. [2019-10-13 21:16:11,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2019-10-13 21:16:11,769 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:11,769 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:11,977 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:11,978 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:11,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:11,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1469389812, now seen corresponding path program 1 times [2019-10-13 21:16:11,979 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:11,979 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905152714] [2019-10-13 21:16:11,980 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:11,980 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:11,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:13,032 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:13,033 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905152714] [2019-10-13 21:16:13,033 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854846694] [2019-10-13 21:16:13,033 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 21:16:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:13,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 3240 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:13,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:14,071 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:14,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:14,472 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:14,567 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:14,730 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:14,731 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-13 21:16:14,731 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315472669] [2019-10-13 21:16:14,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:16:14,732 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:14,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:16:14,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:16:14,733 INFO L87 Difference]: Start difference. First operand 1189 states and 1809 transitions. Second operand 16 states. [2019-10-13 21:16:16,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:16,559 INFO L93 Difference]: Finished difference Result 2329 states and 3560 transitions. [2019-10-13 21:16:16,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:16,560 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 223 [2019-10-13 21:16:16,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:16,567 INFO L225 Difference]: With dead ends: 2329 [2019-10-13 21:16:16,567 INFO L226 Difference]: Without dead ends: 1201 [2019-10-13 21:16:16,571 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 435 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:16:16,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2019-10-13 21:16:16,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1199. [2019-10-13 21:16:16,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1199 states. [2019-10-13 21:16:16,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1820 transitions. [2019-10-13 21:16:16,622 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1820 transitions. Word has length 223 [2019-10-13 21:16:16,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:16,622 INFO L462 AbstractCegarLoop]: Abstraction has 1199 states and 1820 transitions. [2019-10-13 21:16:16,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:16:16,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1820 transitions. [2019-10-13 21:16:16,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-10-13 21:16:16,629 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:16,630 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:16,837 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:16,838 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:16,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:16,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1201266754, now seen corresponding path program 2 times [2019-10-13 21:16:16,839 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:16,839 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691805754] [2019-10-13 21:16:16,839 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:16,840 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:16,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:17,205 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:17,205 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691805754] [2019-10-13 21:16:17,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062679285] [2019-10-13 21:16:17,206 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 21:16:17,821 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:17,822 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:17,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:16:17,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:18,080 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:18,568 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:18,568 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-13 21:16:18,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278740049] [2019-10-13 21:16:18,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:18,569 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:18,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:18,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:16:18,570 INFO L87 Difference]: Start difference. First operand 1199 states and 1820 transitions. Second operand 14 states. [2019-10-13 21:16:21,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:21,308 INFO L93 Difference]: Finished difference Result 3832 states and 5883 transitions. [2019-10-13 21:16:21,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:21,308 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 224 [2019-10-13 21:16:21,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:21,349 INFO L225 Difference]: With dead ends: 3832 [2019-10-13 21:16:21,349 INFO L226 Difference]: Without dead ends: 3529 [2019-10-13 21:16:21,352 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 446 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:16:21,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2019-10-13 21:16:21,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 3177. [2019-10-13 21:16:21,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3177 states. [2019-10-13 21:16:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 5003 transitions. [2019-10-13 21:16:21,546 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 5003 transitions. Word has length 224 [2019-10-13 21:16:21,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:21,546 INFO L462 AbstractCegarLoop]: Abstraction has 3177 states and 5003 transitions. [2019-10-13 21:16:21,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:16:21,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 5003 transitions. [2019-10-13 21:16:21,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-10-13 21:16:21,565 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:21,566 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:21,773 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:21,773 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:21,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:21,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1182881275, now seen corresponding path program 1 times [2019-10-13 21:16:21,774 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:21,774 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200721342] [2019-10-13 21:16:21,775 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:21,775 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:21,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:22,109 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200721342] [2019-10-13 21:16:22,110 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314442292] [2019-10-13 21:16:22,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:16:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:22,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 3242 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:22,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:22,916 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:22,916 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:23,276 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:23,376 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:23,453 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:23,585 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:23,585 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:23,586 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-13 21:16:23,586 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236887632] [2019-10-13 21:16:23,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:16:23,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:23,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:16:23,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:23,588 INFO L87 Difference]: Start difference. First operand 3177 states and 5003 transitions. Second operand 15 states. [2019-10-13 21:16:25,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:25,823 INFO L93 Difference]: Finished difference Result 6248 states and 9882 transitions. [2019-10-13 21:16:25,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:25,824 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 225 [2019-10-13 21:16:25,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:25,847 INFO L225 Difference]: With dead ends: 6248 [2019-10-13 21:16:25,847 INFO L226 Difference]: Without dead ends: 3183 [2019-10-13 21:16:25,860 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 439 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:16:25,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2019-10-13 21:16:25,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 3177. [2019-10-13 21:16:25,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3177 states. [2019-10-13 21:16:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 5001 transitions. [2019-10-13 21:16:26,009 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 5001 transitions. Word has length 225 [2019-10-13 21:16:26,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:26,010 INFO L462 AbstractCegarLoop]: Abstraction has 3177 states and 5001 transitions. [2019-10-13 21:16:26,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:16:26,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 5001 transitions. [2019-10-13 21:16:26,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-10-13 21:16:26,028 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:26,029 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:26,237 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:26,238 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:26,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:26,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1831514270, now seen corresponding path program 1 times [2019-10-13 21:16:26,238 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:26,238 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655334436] [2019-10-13 21:16:26,238 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:26,238 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:26,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:26,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655334436] [2019-10-13 21:16:26,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623758679] [2019-10-13 21:16:26,530 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 21:16:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:27,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 3240 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:27,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:27,366 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:27,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:27,747 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:27,812 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:16:27,812 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:27,813 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-13 21:16:27,813 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23815468] [2019-10-13 21:16:27,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:16:27,814 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:27,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:16:27,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:16:27,815 INFO L87 Difference]: Start difference. First operand 3177 states and 5001 transitions. Second operand 12 states.