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 0.1.24-13a467a-m [2019-10-15 01:14:56,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:14:56,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:14:56,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:14:56,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:14:56,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:14:56,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:14:56,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:14:56,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:14:57,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:14:57,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:14:57,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:14:57,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:14:57,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:14:57,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:14:57,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:14:57,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:14:57,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:14:57,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:14:57,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:14:57,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:14:57,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:14:57,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:14:57,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:14:57,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:14:57,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:14:57,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:14:57,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:14:57,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:14:57,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:14:57,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:14:57,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:14:57,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:14:57,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:14:57,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:14:57,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:14:57,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:14:57,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:14:57,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:14:57,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:14:57,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:14:57,041 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:14:57,064 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:14:57,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:14:57,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:14:57,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:14:57,066 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:14:57,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:14:57,067 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:14:57,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:14:57,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:14:57,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:14:57,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:14:57,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:14:57,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:14:57,068 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:14:57,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:14:57,068 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:14:57,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:14:57,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:14:57,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:14:57,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:14:57,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:14:57,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:57,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:14:57,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:14:57,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:14:57,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:14:57,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:14:57,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:14:57,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:14:57,320 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:14:57,334 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:14:57,338 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:14:57,340 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:14:57,340 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:14:57,341 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product32.cil.c [2019-10-15 01:14:57,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ef2d3a5/d627800df97b4c6c81666bec8b744e28/FLAG29fb2c8c0 [2019-10-15 01:14:58,052 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:14:58,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product32.cil.c [2019-10-15 01:14:58,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ef2d3a5/d627800df97b4c6c81666bec8b744e28/FLAG29fb2c8c0 [2019-10-15 01:14:58,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ef2d3a5/d627800df97b4c6c81666bec8b744e28 [2019-10-15 01:14:58,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:14:58,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:14:58,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:58,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:14:58,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:14:58,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:58" (1/1) ... [2019-10-15 01:14:58,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34519ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:58, skipping insertion in model container [2019-10-15 01:14:58,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:58" (1/1) ... [2019-10-15 01:14:58,332 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:14:58,413 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:14:59,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:59,181 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:14:59,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:59,414 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:14:59,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:59 WrapperNode [2019-10-15 01:14:59,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:59,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:14:59,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:14:59,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:14:59,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:59" (1/1) ... [2019-10-15 01:14:59,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:59" (1/1) ... [2019-10-15 01:14:59,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:59" (1/1) ... [2019-10-15 01:14:59,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:59" (1/1) ... [2019-10-15 01:14:59,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:59" (1/1) ... [2019-10-15 01:14:59,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:59" (1/1) ... [2019-10-15 01:14:59,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:59" (1/1) ... [2019-10-15 01:14:59,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:14:59,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:14:59,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:14:59,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:14:59,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:59,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:14:59,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:14:59,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:59,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:14:59,687 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:14:59,688 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:14:59,688 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:14:59,688 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:14:59,689 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:14:59,689 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:14:59,689 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:14:59,690 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-15 01:14:59,690 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:14:59,691 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:14:59,691 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:14:59,691 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:14:59,693 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:14:59,694 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:14:59,694 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:14:59,694 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:14:59,694 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:14:59,695 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:14:59,695 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:14:59,695 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:14:59,695 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:14:59,695 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:14:59,696 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:14:59,696 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:14:59,696 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:14:59,696 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:14:59,696 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:14:59,696 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:14:59,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-15 01:14:59,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-15 01:14:59,697 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:14:59,697 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:14:59,697 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:14:59,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:14:59,698 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:14:59,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:14:59,698 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:14:59,698 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:14:59,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:14:59,698 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:14:59,699 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:14:59,699 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:14:59,699 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:14:59,699 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:14:59,699 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:14:59,699 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:14:59,699 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:14:59,700 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:14:59,700 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:14:59,700 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:14:59,700 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:14:59,700 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:14:59,700 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:14:59,700 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:14:59,701 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:14:59,701 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:14:59,701 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:14:59,701 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:14:59,701 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:14:59,702 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:14:59,702 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:14:59,702 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:59,702 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:14:59,703 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:59,703 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:14:59,703 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:14:59,703 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:14:59,703 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:14:59,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:14:59,704 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:14:59,705 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:14:59,705 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:14:59,705 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:14:59,705 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:14:59,705 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:14:59,706 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:14:59,706 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:14:59,706 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:14:59,707 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:14:59,707 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:14:59,708 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:14:59,708 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-15 01:14:59,708 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:14:59,709 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:14:59,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:14:59,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:14:59,709 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:14:59,710 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:14:59,710 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:14:59,710 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:14:59,710 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:14:59,710 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:14:59,710 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:14:59,710 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:14:59,711 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:14:59,711 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:14:59,711 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:14:59,711 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:14:59,711 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:14:59,711 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:14:59,711 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:14:59,712 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:14:59,712 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:14:59,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:14:59,712 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:14:59,712 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:14:59,712 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:14:59,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:14:59,713 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:14:59,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:59,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:59,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:59,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:14:59,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:14:59,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:14:59,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:14:59,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:14:59,715 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:14:59,715 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:14:59,715 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:14:59,716 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:14:59,716 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:14:59,717 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:14:59,717 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:14:59,717 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:14:59,717 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:14:59,717 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:14:59,718 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:14:59,718 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:14:59,718 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:14:59,718 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:14:59,718 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:14:59,719 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:14:59,722 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:14:59,722 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:14:59,722 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:14:59,723 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:14:59,723 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:14:59,723 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:14:59,724 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:14:59,730 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:14:59,731 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:14:59,731 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:14:59,731 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:14:59,731 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:14:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:14:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:14:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:14:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:14:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:14:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:14:59,733 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:14:59,733 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:14:59,733 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:14:59,733 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:14:59,733 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:14:59,734 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:14:59,734 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:14:59,734 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:14:59,734 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:14:59,734 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:14:59,734 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:14:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:14:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-15 01:14:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:14:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:14:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:14:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-15 01:14:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:14:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:14:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:14:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-15 01:14:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:14:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:14:59,737 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:14:59,737 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:14:59,737 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:14:59,737 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:14:59,737 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:14:59,737 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:14:59,738 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:14:59,738 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:14:59,738 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:14:59,738 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:14:59,738 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:14:59,738 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:14:59,739 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:14:59,739 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:14:59,739 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:14:59,740 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:14:59,740 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:14:59,740 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:14:59,740 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:14:59,740 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:14:59,740 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:14:59,740 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:14:59,741 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:14:59,741 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:14:59,741 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:14:59,741 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:14:59,741 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:14:59,741 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:14:59,742 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:14:59,742 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:14:59,742 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:14:59,742 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:14:59,742 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:14:59,742 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:14:59,743 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:14:59,743 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:14:59,743 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:14:59,743 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:14:59,743 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:14:59,743 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:14:59,743 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:14:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:14:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:14:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:14:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:14:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-15 01:14:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:14:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:14:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:14:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:14:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:14:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:14:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:14:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:14:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:14:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:14:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:14:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:14:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:14:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:14:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:14:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:14:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:14:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:14:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:14:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:14:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:14:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:14:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:15:01,770 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:15:01,771 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:15:01,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:01 BoogieIcfgContainer [2019-10-15 01:15:01,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:15:01,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:15:01,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:15:01,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:15:01,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:14:58" (1/3) ... [2019-10-15 01:15:01,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a68c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:01, skipping insertion in model container [2019-10-15 01:15:01,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:59" (2/3) ... [2019-10-15 01:15:01,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a68c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:01, skipping insertion in model container [2019-10-15 01:15:01,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:01" (3/3) ... [2019-10-15 01:15:01,785 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product32.cil.c [2019-10-15 01:15:01,795 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:15:01,807 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:15:01,818 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:15:01,861 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:15:01,861 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:15:01,862 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:15:01,864 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:15:01,864 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:15:01,864 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:15:01,864 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:15:01,864 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:15:01,904 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states. [2019-10-15 01:15:01,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-15 01:15:01,934 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:01,936 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] [2019-10-15 01:15:01,937 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:01,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:01,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1590085758, now seen corresponding path program 1 times [2019-10-15 01:15:01,953 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:01,953 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984684259] [2019-10-15 01:15:01,953 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:01,954 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:01,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:15:02,624 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984684259] [2019-10-15 01:15:02,625 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:02,625 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:15:02,625 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303898067] [2019-10-15 01:15:02,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:15:02,632 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:02,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:15:02,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:02,649 INFO L87 Difference]: Start difference. First operand 649 states. Second operand 2 states. [2019-10-15 01:15:02,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:02,757 INFO L93 Difference]: Finished difference Result 928 states and 1264 transitions. [2019-10-15 01:15:02,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:15:02,760 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 204 [2019-10-15 01:15:02,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:02,797 INFO L225 Difference]: With dead ends: 928 [2019-10-15 01:15:02,797 INFO L226 Difference]: Without dead ends: 592 [2019-10-15 01:15:02,812 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:02,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-10-15 01:15:02,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2019-10-15 01:15:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-10-15 01:15:02,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 808 transitions. [2019-10-15 01:15:02,948 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 808 transitions. Word has length 204 [2019-10-15 01:15:02,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:02,952 INFO L462 AbstractCegarLoop]: Abstraction has 592 states and 808 transitions. [2019-10-15 01:15:02,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:15:02,952 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 808 transitions. [2019-10-15 01:15:02,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-15 01:15:02,960 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:02,961 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] [2019-10-15 01:15:02,961 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:02,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:02,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1142276697, now seen corresponding path program 1 times [2019-10-15 01:15:02,962 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:02,963 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214766446] [2019-10-15 01:15:02,963 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:02,963 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:02,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:03,356 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:15:03,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214766446] [2019-10-15 01:15:03,357 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:03,357 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:03,357 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689544220] [2019-10-15 01:15:03,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:03,366 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:03,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:03,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:03,367 INFO L87 Difference]: Start difference. First operand 592 states and 808 transitions. Second operand 3 states. [2019-10-15 01:15:03,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:03,478 INFO L93 Difference]: Finished difference Result 911 states and 1224 transitions. [2019-10-15 01:15:03,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:03,479 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2019-10-15 01:15:03,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:03,490 INFO L225 Difference]: With dead ends: 911 [2019-10-15 01:15:03,490 INFO L226 Difference]: Without dead ends: 595 [2019-10-15 01:15:03,494 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:03,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-15 01:15:03,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 594. [2019-10-15 01:15:03,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2019-10-15 01:15:03,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 810 transitions. [2019-10-15 01:15:03,539 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 810 transitions. Word has length 205 [2019-10-15 01:15:03,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:03,540 INFO L462 AbstractCegarLoop]: Abstraction has 594 states and 810 transitions. [2019-10-15 01:15:03,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:03,541 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 810 transitions. [2019-10-15 01:15:03,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-10-15 01:15:03,550 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:03,551 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] [2019-10-15 01:15:03,551 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:03,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:03,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1211358665, now seen corresponding path program 1 times [2019-10-15 01:15:03,552 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:03,552 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073993466] [2019-10-15 01:15:03,553 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:03,553 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:03,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:15:03,906 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073993466] [2019-10-15 01:15:03,907 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:03,907 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:03,907 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417135859] [2019-10-15 01:15:03,909 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:03,912 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:03,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:03,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:03,913 INFO L87 Difference]: Start difference. First operand 594 states and 810 transitions. Second operand 3 states. [2019-10-15 01:15:03,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:03,969 INFO L93 Difference]: Finished difference Result 1166 states and 1621 transitions. [2019-10-15 01:15:03,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:03,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2019-10-15 01:15:03,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:03,978 INFO L225 Difference]: With dead ends: 1166 [2019-10-15 01:15:03,978 INFO L226 Difference]: Without dead ends: 637 [2019-10-15 01:15:03,980 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:03,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2019-10-15 01:15:04,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 636. [2019-10-15 01:15:04,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2019-10-15 01:15:04,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 882 transitions. [2019-10-15 01:15:04,016 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 882 transitions. Word has length 215 [2019-10-15 01:15:04,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:04,017 INFO L462 AbstractCegarLoop]: Abstraction has 636 states and 882 transitions. [2019-10-15 01:15:04,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:04,018 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 882 transitions. [2019-10-15 01:15:04,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-15 01:15:04,024 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:04,024 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] [2019-10-15 01:15:04,024 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:04,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:04,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1000729200, now seen corresponding path program 1 times [2019-10-15 01:15:04,026 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:04,026 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861272642] [2019-10-15 01:15:04,026 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:04,026 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:04,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:04,308 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:15:04,308 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861272642] [2019-10-15 01:15:04,308 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:04,309 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:04,309 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166466741] [2019-10-15 01:15:04,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:04,310 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:04,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:04,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:04,310 INFO L87 Difference]: Start difference. First operand 636 states and 882 transitions. Second operand 3 states. [2019-10-15 01:15:04,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:04,348 INFO L93 Difference]: Finished difference Result 1289 states and 1832 transitions. [2019-10-15 01:15:04,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:04,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2019-10-15 01:15:04,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:04,353 INFO L225 Difference]: With dead ends: 1289 [2019-10-15 01:15:04,354 INFO L226 Difference]: Without dead ends: 718 [2019-10-15 01:15:04,356 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:04,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2019-10-15 01:15:04,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 717. [2019-10-15 01:15:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-10-15 01:15:04,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1020 transitions. [2019-10-15 01:15:04,381 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1020 transitions. Word has length 216 [2019-10-15 01:15:04,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:04,381 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1020 transitions. [2019-10-15 01:15:04,381 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:04,381 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1020 transitions. [2019-10-15 01:15:04,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-15 01:15:04,386 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:04,386 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] [2019-10-15 01:15:04,386 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:04,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:04,387 INFO L82 PathProgramCache]: Analyzing trace with hash -562030519, now seen corresponding path program 1 times [2019-10-15 01:15:04,387 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:04,387 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066916787] [2019-10-15 01:15:04,387 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:04,387 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:04,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:15:04,562 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066916787] [2019-10-15 01:15:04,562 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:04,563 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:04,563 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990867777] [2019-10-15 01:15:04,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:04,564 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:04,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:04,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:04,565 INFO L87 Difference]: Start difference. First operand 717 states and 1020 transitions. Second operand 3 states. [2019-10-15 01:15:04,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:04,616 INFO L93 Difference]: Finished difference Result 1526 states and 2236 transitions. [2019-10-15 01:15:04,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:04,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2019-10-15 01:15:04,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:04,624 INFO L225 Difference]: With dead ends: 1526 [2019-10-15 01:15:04,624 INFO L226 Difference]: Without dead ends: 874 [2019-10-15 01:15:04,627 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:04,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2019-10-15 01:15:04,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 873. [2019-10-15 01:15:04,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 873 states. [2019-10-15 01:15:04,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1284 transitions. [2019-10-15 01:15:04,687 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1284 transitions. Word has length 217 [2019-10-15 01:15:04,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:04,688 INFO L462 AbstractCegarLoop]: Abstraction has 873 states and 1284 transitions. [2019-10-15 01:15:04,688 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:04,688 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1284 transitions. [2019-10-15 01:15:04,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-15 01:15:04,697 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:04,698 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] [2019-10-15 01:15:04,698 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:04,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:04,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1445317616, now seen corresponding path program 1 times [2019-10-15 01:15:04,699 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:04,699 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855050244] [2019-10-15 01:15:04,700 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:04,700 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:04,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:15:05,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855050244] [2019-10-15 01:15:05,003 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:05,003 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:05,003 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011087181] [2019-10-15 01:15:05,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:05,004 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:05,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:05,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:05,004 INFO L87 Difference]: Start difference. First operand 873 states and 1284 transitions. Second operand 3 states. [2019-10-15 01:15:05,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:05,059 INFO L93 Difference]: Finished difference Result 1982 states and 3008 transitions. [2019-10-15 01:15:05,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:05,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2019-10-15 01:15:05,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:05,067 INFO L225 Difference]: With dead ends: 1982 [2019-10-15 01:15:05,067 INFO L226 Difference]: Without dead ends: 1174 [2019-10-15 01:15:05,071 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:05,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2019-10-15 01:15:05,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1173. [2019-10-15 01:15:05,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2019-10-15 01:15:05,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1788 transitions. [2019-10-15 01:15:05,122 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1788 transitions. Word has length 218 [2019-10-15 01:15:05,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:05,123 INFO L462 AbstractCegarLoop]: Abstraction has 1173 states and 1788 transitions. [2019-10-15 01:15:05,124 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:05,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1788 transitions. [2019-10-15 01:15:05,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-10-15 01:15:05,131 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:05,131 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] [2019-10-15 01:15:05,132 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:05,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:05,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1665385988, now seen corresponding path program 1 times [2019-10-15 01:15:05,132 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:05,132 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484873220] [2019-10-15 01:15:05,133 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:05,133 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:05,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:05,618 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:15:05,619 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484873220] [2019-10-15 01:15:05,619 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195992548] [2019-10-15 01:15:05,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:06,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 3238 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:06,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:06,721 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:07,185 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:07,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:07,360 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:07,521 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:07,522 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-15 01:15:07,522 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604805889] [2019-10-15 01:15:07,523 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:15:07,523 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:07,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:15:07,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:15:07,524 INFO L87 Difference]: Start difference. First operand 1173 states and 1788 transitions. Second operand 9 states. [2019-10-15 01:15:09,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:09,348 INFO L93 Difference]: Finished difference Result 2324 states and 3556 transitions. [2019-10-15 01:15:09,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:15:09,348 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 221 [2019-10-15 01:15:09,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:09,355 INFO L225 Difference]: With dead ends: 2324 [2019-10-15 01:15:09,355 INFO L226 Difference]: Without dead ends: 1187 [2019-10-15 01:15:09,360 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 431 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:15:09,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2019-10-15 01:15:09,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1187. [2019-10-15 01:15:09,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1187 states. [2019-10-15 01:15:09,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1806 transitions. [2019-10-15 01:15:09,412 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1806 transitions. Word has length 221 [2019-10-15 01:15:09,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:09,413 INFO L462 AbstractCegarLoop]: Abstraction has 1187 states and 1806 transitions. [2019-10-15 01:15:09,413 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:15:09,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1806 transitions. [2019-10-15 01:15:09,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-10-15 01:15:09,420 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:09,420 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] [2019-10-15 01:15:09,630 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:09,630 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:09,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:09,631 INFO L82 PathProgramCache]: Analyzing trace with hash 676180806, now seen corresponding path program 1 times [2019-10-15 01:15:09,631 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:09,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014239619] [2019-10-15 01:15:09,631 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:09,632 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:09,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:10,166 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:15:10,167 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014239619] [2019-10-15 01:15:10,167 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272219206] [2019-10-15 01:15:10,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:10,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 3239 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:10,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:11,167 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:11,535 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:11,615 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:11,703 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:11,703 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-15 01:15:11,705 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295446926] [2019-10-15 01:15:11,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:11,706 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:11,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:11,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:15:11,708 INFO L87 Difference]: Start difference. First operand 1187 states and 1806 transitions. Second operand 7 states. [2019-10-15 01:15:13,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:13,193 INFO L93 Difference]: Finished difference Result 2325 states and 3566 transitions. [2019-10-15 01:15:13,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:15:13,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2019-10-15 01:15:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:13,201 INFO L225 Difference]: With dead ends: 2325 [2019-10-15 01:15:13,201 INFO L226 Difference]: Without dead ends: 1189 [2019-10-15 01:15:13,206 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 438 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-15 01:15:13,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2019-10-15 01:15:13,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2019-10-15 01:15:13,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1189 states. [2019-10-15 01:15:13,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1809 transitions. [2019-10-15 01:15:13,295 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1809 transitions. Word has length 222 [2019-10-15 01:15:13,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:13,296 INFO L462 AbstractCegarLoop]: Abstraction has 1189 states and 1809 transitions. [2019-10-15 01:15:13,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:13,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1809 transitions. [2019-10-15 01:15:13,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2019-10-15 01:15:13,305 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:13,305 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] [2019-10-15 01:15:13,513 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:13,514 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:13,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:13,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1469389812, now seen corresponding path program 1 times [2019-10-15 01:15:13,515 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:13,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848692260] [2019-10-15 01:15:13,515 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:13,515 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:13,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:14,099 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:15:14,099 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848692260] [2019-10-15 01:15:14,100 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105292891] [2019-10-15 01:15:14,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:14,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 3240 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:14,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:15:14,975 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:15,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:15,430 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:15,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:15,696 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:15,696 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:15,696 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-15 01:15:15,697 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714651846] [2019-10-15 01:15:15,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:15:15,698 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:15,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:15:15,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:15:15,700 INFO L87 Difference]: Start difference. First operand 1189 states and 1809 transitions. Second operand 16 states. [2019-10-15 01:15:17,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:17,342 INFO L93 Difference]: Finished difference Result 2329 states and 3560 transitions. [2019-10-15 01:15:17,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:17,343 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 223 [2019-10-15 01:15:17,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:17,353 INFO L225 Difference]: With dead ends: 2329 [2019-10-15 01:15:17,353 INFO L226 Difference]: Without dead ends: 1201 [2019-10-15 01:15:17,362 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 435 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-15 01:15:17,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2019-10-15 01:15:17,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1199. [2019-10-15 01:15:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1199 states. [2019-10-15 01:15:17,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1820 transitions. [2019-10-15 01:15:17,416 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1820 transitions. Word has length 223 [2019-10-15 01:15:17,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:17,417 INFO L462 AbstractCegarLoop]: Abstraction has 1199 states and 1820 transitions. [2019-10-15 01:15:17,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:15:17,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1820 transitions. [2019-10-15 01:15:17,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-10-15 01:15:17,427 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:17,427 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] [2019-10-15 01:15:17,636 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:17,637 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:17,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:17,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1201266754, now seen corresponding path program 2 times [2019-10-15 01:15:17,638 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:17,638 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806653411] [2019-10-15 01:15:17,638 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:17,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:17,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:18,043 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:18,043 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806653411] [2019-10-15 01:15:18,044 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871776857] [2019-10-15 01:15:18,044 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:18,585 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:15:18,585 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:18,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:15:18,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:19,149 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:19,623 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:15:19,623 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:19,623 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-15 01:15:19,624 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669029854] [2019-10-15 01:15:19,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:15:19,625 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:19,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:15:19,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:15:19,626 INFO L87 Difference]: Start difference. First operand 1199 states and 1820 transitions. Second operand 14 states. [2019-10-15 01:15:22,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:22,296 INFO L93 Difference]: Finished difference Result 3832 states and 5883 transitions. [2019-10-15 01:15:22,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:15:22,297 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 224 [2019-10-15 01:15:22,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:22,316 INFO L225 Difference]: With dead ends: 3832 [2019-10-15 01:15:22,317 INFO L226 Difference]: Without dead ends: 3529 [2019-10-15 01:15:22,320 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 446 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-15 01:15:22,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2019-10-15 01:15:22,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 3177. [2019-10-15 01:15:22,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3177 states. [2019-10-15 01:15:22,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 5003 transitions. [2019-10-15 01:15:22,464 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 5003 transitions. Word has length 224 [2019-10-15 01:15:22,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:22,465 INFO L462 AbstractCegarLoop]: Abstraction has 3177 states and 5003 transitions. [2019-10-15 01:15:22,465 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:15:22,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 5003 transitions. [2019-10-15 01:15:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-10-15 01:15:22,485 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:22,486 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] [2019-10-15 01:15:22,696 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:22,696 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:22,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:22,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1182881275, now seen corresponding path program 1 times [2019-10-15 01:15:22,697 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:22,697 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664721736] [2019-10-15 01:15:22,697 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:22,698 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:22,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:23,019 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664721736] [2019-10-15 01:15:23,019 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326768357] [2019-10-15 01:15:23,019 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 [2019-10-15 01:15:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:23,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 3242 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:23,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:15:23,813 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:24,239 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:24,319 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:24,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:24,536 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:24,537 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:24,537 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-15 01:15:24,537 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713779998] [2019-10-15 01:15:24,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:15:24,538 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:24,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:15:24,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:15:24,539 INFO L87 Difference]: Start difference. First operand 3177 states and 5003 transitions. Second operand 15 states. [2019-10-15 01:15:26,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:26,634 INFO L93 Difference]: Finished difference Result 6248 states and 9882 transitions. [2019-10-15 01:15:26,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:26,635 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 225 [2019-10-15 01:15:26,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:26,653 INFO L225 Difference]: With dead ends: 6248 [2019-10-15 01:15:26,654 INFO L226 Difference]: Without dead ends: 3183 [2019-10-15 01:15:26,668 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 [2019-10-15 01:15:26,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2019-10-15 01:15:26,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 3177. [2019-10-15 01:15:26,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3177 states. [2019-10-15 01:15:26,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 5001 transitions. [2019-10-15 01:15:26,816 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 5001 transitions. Word has length 225 [2019-10-15 01:15:26,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:26,817 INFO L462 AbstractCegarLoop]: Abstraction has 3177 states and 5001 transitions. [2019-10-15 01:15:26,817 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:15:26,818 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 5001 transitions. [2019-10-15 01:15:26,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-10-15 01:15:26,834 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:26,835 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] [2019-10-15 01:15:27,042 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:27,043 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:27,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:27,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1831514270, now seen corresponding path program 1 times [2019-10-15 01:15:27,044 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:27,044 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225720804] [2019-10-15 01:15:27,044 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:27,044 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:27,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:27,282 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:27,282 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225720804] [2019-10-15 01:15:27,282 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809031767] [2019-10-15 01:15:27,283 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 [2019-10-15 01:15:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:27,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 3240 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:27,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:15:28,083 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:28,411 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:28,472 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:15:28,539 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:28,539 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-15 01:15:28,539 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740633937] [2019-10-15 01:15:28,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:15:28,540 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:28,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:15:28,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:15:28,541 INFO L87 Difference]: Start difference. First operand 3177 states and 5001 transitions. Second operand 12 states. [2019-10-15 01:15:30,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:30,199 INFO L93 Difference]: Finished difference Result 4609 states and 7140 transitions. [2019-10-15 01:15:30,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:15:30,200 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 226 [2019-10-15 01:15:30,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:30,212 INFO L225 Difference]: With dead ends: 4609 [2019-10-15 01:15:30,213 INFO L226 Difference]: Without dead ends: 2370 [2019-10-15 01:15:30,220 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 446 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:15:30,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2019-10-15 01:15:30,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 2370. [2019-10-15 01:15:30,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2370 states. [2019-10-15 01:15:30,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 3643 transitions. [2019-10-15 01:15:30,313 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 3643 transitions. Word has length 226 [2019-10-15 01:15:30,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:30,314 INFO L462 AbstractCegarLoop]: Abstraction has 2370 states and 3643 transitions. [2019-10-15 01:15:30,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:15:30,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 3643 transitions. [2019-10-15 01:15:30,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-15 01:15:30,328 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:30,328 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, 1, 1] [2019-10-15 01:15:30,530 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:30,531 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:30,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:30,532 INFO L82 PathProgramCache]: Analyzing trace with hash 618713254, now seen corresponding path program 2 times [2019-10-15 01:15:30,532 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:30,533 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965048407] [2019-10-15 01:15:30,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:30,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:30,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:30,771 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:15:30,772 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965048407] [2019-10-15 01:15:30,772 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777739483] [2019-10-15 01:15:30,772 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:31,378 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:15:31,379 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:31,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:15:31,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:31,573 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:31,573 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:15:32,094 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:32,094 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15] total 27 [2019-10-15 01:15:32,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711967155] [2019-10-15 01:15:32,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:15:32,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:32,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:15:32,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2019-10-15 01:15:32,096 INFO L87 Difference]: Start difference. First operand 2370 states and 3643 transitions. Second operand 14 states.