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_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:15:51,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:15:51,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:15:51,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:15:51,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:15:51,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:15:51,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:15:51,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:15:51,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:15:51,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:15:51,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:15:51,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:15:51,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:15:51,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:15:51,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:15:51,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:15:51,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:15:51,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:15:51,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:15:51,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:15:51,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:15:51,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:15:51,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:15:51,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:15:51,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:15:51,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:15:51,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:15:51,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:15:51,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:15:51,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:15:51,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:15:51,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:15:51,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:15:51,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:15:51,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:15:51,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:15:51,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:15:51,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:15:51,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:15:51,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:15:51,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:15:51,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:15:51,125 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:15:51,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:15:51,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:15:51,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:15:51,128 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:15:51,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:15:51,128 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:15:51,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:15:51,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:15:51,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:15:51,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:15:51,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:15:51,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:15:51,131 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:15:51,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:15:51,131 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:15:51,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:15:51,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:15:51,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:15:51,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:15:51,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:15:51,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:51,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:15:51,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:15:51,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:15:51,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:15:51,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:15:51,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:15:51,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:15:51,485 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:15:51,513 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:15:51,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:15:51,519 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:15:51,519 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:15:51,520 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product28.cil.c [2019-10-13 21:15:51,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d566b645/2f874093c3d543f3a7aeaa9338af11e9/FLAG344739cfe [2019-10-13 21:15:52,299 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:15:52,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product28.cil.c [2019-10-13 21:15:52,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d566b645/2f874093c3d543f3a7aeaa9338af11e9/FLAG344739cfe [2019-10-13 21:15:52,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d566b645/2f874093c3d543f3a7aeaa9338af11e9 [2019-10-13 21:15:52,454 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:15:52,456 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:15:52,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:52,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:15:52,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:15:52,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:52" (1/1) ... [2019-10-13 21:15:52,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d974c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:52, skipping insertion in model container [2019-10-13 21:15:52,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:52" (1/1) ... [2019-10-13 21:15:52,473 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:15:52,555 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:15:53,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:53,307 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:15:53,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:53,536 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:15:53,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:53 WrapperNode [2019-10-13 21:15:53,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:53,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:15:53,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:15:53,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:15:53,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:53" (1/1) ... [2019-10-13 21:15:53,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:53" (1/1) ... [2019-10-13 21:15:53,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:53" (1/1) ... [2019-10-13 21:15:53,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:53" (1/1) ... [2019-10-13 21:15:53,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:53" (1/1) ... [2019-10-13 21:15:53,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:53" (1/1) ... [2019-10-13 21:15:53,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:53" (1/1) ... [2019-10-13 21:15:53,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:15:53,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:15:53,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:15:53,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:15:53,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:53,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:15:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:15:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:15:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-10-13 21:15:53,856 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:15:53,856 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:15:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:15:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:15:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:15:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:15:53,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:53,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:53,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:15:53,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:53,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:15:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:15:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:15:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:15:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:15:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:15:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:15:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:15:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:15:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:15:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:15:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:15:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:15:53,867 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:15:53,867 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:15:53,868 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:15:53,868 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:15:53,868 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:15:53,868 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:15:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:15:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:15:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:15:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:15:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:15:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:15:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:15:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:15:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:15:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:15:53,872 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:15:53,872 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:15:53,872 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:15:53,872 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:15:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:15:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:15:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:53,874 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:15:53,874 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:15:53,874 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:15:53,874 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:15:53,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:15:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:15:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:15:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:15:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:15:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:15:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:15:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:15:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:15:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:15:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:15:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:15:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:15:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:15:53,877 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:15:53,878 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:15:53,879 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:15:53,879 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:15:53,879 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:15:53,879 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:15:53,879 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:15:53,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:15:53,881 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:15:53,881 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:15:53,881 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:15:53,881 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:15:53,883 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:15:53,883 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:15:53,883 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:15:53,884 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:15:53,885 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:15:53,885 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:15:53,885 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:15:53,885 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:15:53,886 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:15:53,886 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:15:53,886 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:15:53,886 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:15:53,886 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:15:53,886 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:15:53,887 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:15:53,887 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:15:53,887 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:15:53,887 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:15:53,887 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:15:53,887 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:15:53,888 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:15:53,888 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:15:53,888 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:15:53,888 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:15:53,888 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:15:53,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:15:53,888 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:15:53,889 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:15:53,889 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:15:53,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:15:53,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:15:53,889 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:15:53,890 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:15:53,890 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:15:53,890 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:15:53,890 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:15:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:15:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:15:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:15:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:15:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:15:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:15:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:15:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:15:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:15:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:15:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:15:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:15:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-10-13 21:15:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:15:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:15:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:15:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:15:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:15:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:15:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:53,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:53,903 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:15:53,903 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:15:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:15:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:15:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:15:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:15:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:15:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:15:53,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:53,913 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:53,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:15:53,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:15:53,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:15:53,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:15:53,913 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:15:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:15:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:15:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:15:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:15:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:15:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:15:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:15:53,916 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:15:53,916 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:15:53,916 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:15:53,916 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:15:53,916 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:15:53,916 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:15:53,916 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:15:53,917 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:15:53,917 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:15:53,917 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:15:53,917 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:15:53,917 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:15:53,917 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:15:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:15:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:15:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:15:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:15:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:15:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:15:53,919 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:15:53,919 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:15:53,919 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:15:53,919 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:15:53,919 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:15:53,919 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:15:53,920 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:15:53,920 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:15:53,920 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:15:53,920 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:15:53,921 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:15:53,921 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:15:53,921 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:15:53,921 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:15:53,921 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:15:53,921 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:15:53,921 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:15:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:15:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:15:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:15:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:15:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:15:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:15:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:15:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:15:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:15:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:15:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:15:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:15:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:15:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:15:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:15:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:15:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:15:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:15:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:15:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:15:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:15:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:15:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:15:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:15:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:15:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:15:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:15:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:15:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:15:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:15:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:15:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:15:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:15:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:15:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:15:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:15:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:15:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:15:56,362 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:15:56,362 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:15:56,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:56 BoogieIcfgContainer [2019-10-13 21:15:56,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:15:56,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:15:56,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:15:56,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:15:56,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:15:52" (1/3) ... [2019-10-13 21:15:56,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78fa919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:56, skipping insertion in model container [2019-10-13 21:15:56,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:53" (2/3) ... [2019-10-13 21:15:56,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78fa919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:56, skipping insertion in model container [2019-10-13 21:15:56,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:56" (3/3) ... [2019-10-13 21:15:56,373 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product28.cil.c [2019-10-13 21:15:56,383 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:15:56,393 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:15:56,405 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:15:56,441 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:15:56,441 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:15:56,441 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:15:56,441 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:15:56,441 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:15:56,441 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:15:56,441 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:15:56,442 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:15:56,476 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states. [2019-10-13 21:15:56,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-13 21:15:56,500 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:56,501 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] [2019-10-13 21:15:56,503 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:56,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:56,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1535758530, now seen corresponding path program 1 times [2019-10-13 21:15:56,520 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:56,520 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486881661] [2019-10-13 21:15:56,521 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:56,521 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:56,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:57,243 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486881661] [2019-10-13 21:15:57,244 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:57,244 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:15:57,244 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303821958] [2019-10-13 21:15:57,250 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:15:57,252 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:57,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:15:57,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:57,270 INFO L87 Difference]: Start difference. First operand 521 states. Second operand 2 states. [2019-10-13 21:15:57,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:57,378 INFO L93 Difference]: Finished difference Result 739 states and 985 transitions. [2019-10-13 21:15:57,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:15:57,379 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 195 [2019-10-13 21:15:57,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:57,410 INFO L225 Difference]: With dead ends: 739 [2019-10-13 21:15:57,410 INFO L226 Difference]: Without dead ends: 470 [2019-10-13 21:15:57,427 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:57,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-10-13 21:15:57,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2019-10-13 21:15:57,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2019-10-13 21:15:57,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 627 transitions. [2019-10-13 21:15:57,562 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 627 transitions. Word has length 195 [2019-10-13 21:15:57,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:57,567 INFO L462 AbstractCegarLoop]: Abstraction has 470 states and 627 transitions. [2019-10-13 21:15:57,567 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:15:57,567 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 627 transitions. [2019-10-13 21:15:57,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-13 21:15:57,575 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:57,576 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] [2019-10-13 21:15:57,576 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:57,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:57,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1501610490, now seen corresponding path program 1 times [2019-10-13 21:15:57,577 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:57,577 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094719823] [2019-10-13 21:15:57,577 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:57,577 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:57,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:57,968 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:57,968 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094719823] [2019-10-13 21:15:57,968 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:57,969 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:57,969 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767591970] [2019-10-13 21:15:57,979 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:57,980 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:57,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:57,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:57,980 INFO L87 Difference]: Start difference. First operand 470 states and 627 transitions. Second operand 3 states. [2019-10-13 21:15:58,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:58,104 INFO L93 Difference]: Finished difference Result 722 states and 948 transitions. [2019-10-13 21:15:58,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:58,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-10-13 21:15:58,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:58,116 INFO L225 Difference]: With dead ends: 722 [2019-10-13 21:15:58,116 INFO L226 Difference]: Without dead ends: 473 [2019-10-13 21:15:58,121 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:58,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2019-10-13 21:15:58,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 472. [2019-10-13 21:15:58,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2019-10-13 21:15:58,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 629 transitions. [2019-10-13 21:15:58,193 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 629 transitions. Word has length 196 [2019-10-13 21:15:58,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:58,195 INFO L462 AbstractCegarLoop]: Abstraction has 472 states and 629 transitions. [2019-10-13 21:15:58,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:58,195 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 629 transitions. [2019-10-13 21:15:58,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-13 21:15:58,212 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:58,212 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] [2019-10-13 21:15:58,213 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:58,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:58,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1703734010, now seen corresponding path program 1 times [2019-10-13 21:15:58,214 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:58,214 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559983909] [2019-10-13 21:15:58,214 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:58,215 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:58,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:58,543 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:58,544 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559983909] [2019-10-13 21:15:58,544 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:58,545 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:58,545 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466254431] [2019-10-13 21:15:58,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:58,553 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:58,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:58,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:58,554 INFO L87 Difference]: Start difference. First operand 472 states and 629 transitions. Second operand 3 states. [2019-10-13 21:15:58,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:58,619 INFO L93 Difference]: Finished difference Result 918 states and 1253 transitions. [2019-10-13 21:15:58,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:58,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2019-10-13 21:15:58,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:58,632 INFO L225 Difference]: With dead ends: 918 [2019-10-13 21:15:58,632 INFO L226 Difference]: Without dead ends: 511 [2019-10-13 21:15:58,636 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:58,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2019-10-13 21:15:58,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 510. [2019-10-13 21:15:58,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2019-10-13 21:15:58,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 695 transitions. [2019-10-13 21:15:58,684 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 695 transitions. Word has length 202 [2019-10-13 21:15:58,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:58,685 INFO L462 AbstractCegarLoop]: Abstraction has 510 states and 695 transitions. [2019-10-13 21:15:58,685 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:58,685 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 695 transitions. [2019-10-13 21:15:58,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-13 21:15:58,699 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:58,699 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] [2019-10-13 21:15:58,700 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:58,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:58,700 INFO L82 PathProgramCache]: Analyzing trace with hash -940076344, now seen corresponding path program 1 times [2019-10-13 21:15:58,701 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:58,701 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202927346] [2019-10-13 21:15:58,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:58,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:58,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:59,272 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:59,272 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202927346] [2019-10-13 21:15:59,272 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066814466] [2019-10-13 21:15:59,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:59,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:00,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:00,308 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:00,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:00,815 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:00,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:01,126 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:01,126 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-13 21:16:01,126 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345190227] [2019-10-13 21:16:01,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:16:01,127 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:01,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:16:01,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:16:01,129 INFO L87 Difference]: Start difference. First operand 510 states and 695 transitions. Second operand 9 states. [2019-10-13 21:16:03,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:03,206 INFO L93 Difference]: Finished difference Result 998 states and 1370 transitions. [2019-10-13 21:16:03,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:16:03,207 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 203 [2019-10-13 21:16:03,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:03,211 INFO L225 Difference]: With dead ends: 998 [2019-10-13 21:16:03,211 INFO L226 Difference]: Without dead ends: 524 [2019-10-13 21:16:03,213 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 393 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:16:03,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2019-10-13 21:16:03,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2019-10-13 21:16:03,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2019-10-13 21:16:03,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 713 transitions. [2019-10-13 21:16:03,266 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 713 transitions. Word has length 203 [2019-10-13 21:16:03,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:03,267 INFO L462 AbstractCegarLoop]: Abstraction has 524 states and 713 transitions. [2019-10-13 21:16:03,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:16:03,267 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 713 transitions. [2019-10-13 21:16:03,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:16:03,271 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:03,271 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] [2019-10-13 21:16:03,472 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:03,472 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:03,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:03,473 INFO L82 PathProgramCache]: Analyzing trace with hash -857353803, now seen corresponding path program 1 times [2019-10-13 21:16:03,474 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:03,474 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994329624] [2019-10-13 21:16:03,474 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:03,475 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:03,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:03,891 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994329624] [2019-10-13 21:16:03,892 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292848095] [2019-10-13 21:16:03,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:04,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:04,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:04,894 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:04,895 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:05,256 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:05,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:05,391 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:05,391 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:05,391 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-13 21:16:05,391 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570331108] [2019-10-13 21:16:05,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:05,393 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:05,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:05,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:05,394 INFO L87 Difference]: Start difference. First operand 524 states and 713 transitions. Second operand 7 states. [2019-10-13 21:16:06,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:06,429 INFO L93 Difference]: Finished difference Result 999 states and 1374 transitions. [2019-10-13 21:16:06,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:06,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2019-10-13 21:16:06,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:06,433 INFO L225 Difference]: With dead ends: 999 [2019-10-13 21:16:06,433 INFO L226 Difference]: Without dead ends: 526 [2019-10-13 21:16:06,437 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 400 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:16:06,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2019-10-13 21:16:06,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2019-10-13 21:16:06,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2019-10-13 21:16:06,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 716 transitions. [2019-10-13 21:16:06,465 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 716 transitions. Word has length 204 [2019-10-13 21:16:06,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:06,466 INFO L462 AbstractCegarLoop]: Abstraction has 526 states and 716 transitions. [2019-10-13 21:16:06,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:06,466 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 716 transitions. [2019-10-13 21:16:06,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-13 21:16:06,473 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:06,474 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] [2019-10-13 21:16:06,684 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:06,685 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:06,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:06,685 INFO L82 PathProgramCache]: Analyzing trace with hash 664623728, now seen corresponding path program 1 times [2019-10-13 21:16:06,686 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:06,686 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580720249] [2019-10-13 21:16:06,686 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:06,687 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:06,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:07,169 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:07,169 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580720249] [2019-10-13 21:16:07,170 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702845774] [2019-10-13 21:16:07,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:07,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 2710 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:07,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:08,194 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:08,608 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:08,684 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:08,777 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:08,930 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:08,930 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-13 21:16:08,931 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406243314] [2019-10-13 21:16:08,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:16:08,932 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:08,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:16:08,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:16:08,933 INFO L87 Difference]: Start difference. First operand 526 states and 716 transitions. Second operand 16 states. [2019-10-13 21:16:11,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:11,001 INFO L93 Difference]: Finished difference Result 1003 states and 1374 transitions. [2019-10-13 21:16:11,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:11,001 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 205 [2019-10-13 21:16:11,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:11,006 INFO L225 Difference]: With dead ends: 1003 [2019-10-13 21:16:11,006 INFO L226 Difference]: Without dead ends: 538 [2019-10-13 21:16:11,009 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 397 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:16:11,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2019-10-13 21:16:11,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2019-10-13 21:16:11,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2019-10-13 21:16:11,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 727 transitions. [2019-10-13 21:16:11,035 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 727 transitions. Word has length 205 [2019-10-13 21:16:11,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:11,035 INFO L462 AbstractCegarLoop]: Abstraction has 536 states and 727 transitions. [2019-10-13 21:16:11,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:16:11,036 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 727 transitions. [2019-10-13 21:16:11,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-10-13 21:16:11,039 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:11,040 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] [2019-10-13 21:16:11,248 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:11,248 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:11,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:11,249 INFO L82 PathProgramCache]: Analyzing trace with hash -2034447971, now seen corresponding path program 2 times [2019-10-13 21:16:11,250 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:11,250 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29874745] [2019-10-13 21:16:11,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:11,251 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:11,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:11,750 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:11,750 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29874745] [2019-10-13 21:16:11,751 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261299501] [2019-10-13 21:16:11,751 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:12,297 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:12,298 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:12,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 2153 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:16:12,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:12,512 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:12,512 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:13,075 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:13,076 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-13 21:16:13,076 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525627622] [2019-10-13 21:16:13,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:13,077 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:13,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:13,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:16:13,079 INFO L87 Difference]: Start difference. First operand 536 states and 727 transitions. Second operand 14 states. [2019-10-13 21:16:15,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:15,023 INFO L93 Difference]: Finished difference Result 1771 states and 2441 transitions. [2019-10-13 21:16:15,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:15,024 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 206 [2019-10-13 21:16:15,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:15,037 INFO L225 Difference]: With dead ends: 1771 [2019-10-13 21:16:15,037 INFO L226 Difference]: Without dead ends: 1540 [2019-10-13 21:16:15,040 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 408 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:16:15,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2019-10-13 21:16:15,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1255. [2019-10-13 21:16:15,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2019-10-13 21:16:15,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1763 transitions. [2019-10-13 21:16:15,137 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1763 transitions. Word has length 206 [2019-10-13 21:16:15,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:15,139 INFO L462 AbstractCegarLoop]: Abstraction has 1255 states and 1763 transitions. [2019-10-13 21:16:15,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:16:15,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1763 transitions. [2019-10-13 21:16:15,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-13 21:16:15,148 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:15,149 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] [2019-10-13 21:16:15,357 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:15,358 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:15,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:15,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1383757944, now seen corresponding path program 1 times [2019-10-13 21:16:15,359 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:15,359 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019350612] [2019-10-13 21:16:15,359 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:15,359 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:15,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:15,710 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:15,711 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019350612] [2019-10-13 21:16:15,711 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448925439] [2019-10-13 21:16:15,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:16,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:16,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:16,604 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:16,906 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:16,996 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:17,070 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:17,191 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:17,191 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:17,191 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-13 21:16:17,192 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54264676] [2019-10-13 21:16:17,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:16:17,193 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:17,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:16:17,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:17,194 INFO L87 Difference]: Start difference. First operand 1255 states and 1763 transitions. Second operand 15 states. [2019-10-13 21:16:18,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:18,552 INFO L93 Difference]: Finished difference Result 2404 states and 3402 transitions. [2019-10-13 21:16:18,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:18,553 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 207 [2019-10-13 21:16:18,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:18,563 INFO L225 Difference]: With dead ends: 2404 [2019-10-13 21:16:18,564 INFO L226 Difference]: Without dead ends: 1261 [2019-10-13 21:16:18,568 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 401 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:16:18,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2019-10-13 21:16:18,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1255. [2019-10-13 21:16:18,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2019-10-13 21:16:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1761 transitions. [2019-10-13 21:16:18,640 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1761 transitions. Word has length 207 [2019-10-13 21:16:18,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:18,640 INFO L462 AbstractCegarLoop]: Abstraction has 1255 states and 1761 transitions. [2019-10-13 21:16:18,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:16:18,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1761 transitions. [2019-10-13 21:16:18,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-10-13 21:16:18,648 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:18,648 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] [2019-10-13 21:16:18,869 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:18,870 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:18,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:18,870 INFO L82 PathProgramCache]: Analyzing trace with hash 615144256, now seen corresponding path program 1 times [2019-10-13 21:16:18,870 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:18,870 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972616239] [2019-10-13 21:16:18,871 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:18,871 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:18,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:19,126 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972616239] [2019-10-13 21:16:19,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412542514] [2019-10-13 21:16:19,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:19,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:19,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:19,883 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:19,883 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:20,146 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:20,213 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:20,325 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:16:20,325 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:20,325 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-13 21:16:20,325 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418691076] [2019-10-13 21:16:20,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:16:20,326 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:20,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:16:20,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:16:20,327 INFO L87 Difference]: Start difference. First operand 1255 states and 1761 transitions. Second operand 12 states. [2019-10-13 21:16:22,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:22,179 INFO L93 Difference]: Finished difference Result 1957 states and 2712 transitions. [2019-10-13 21:16:22,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:16:22,180 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 208 [2019-10-13 21:16:22,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:22,187 INFO L225 Difference]: With dead ends: 1957 [2019-10-13 21:16:22,188 INFO L226 Difference]: Without dead ends: 1044 [2019-10-13 21:16:22,191 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 408 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:22,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2019-10-13 21:16:22,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1044. [2019-10-13 21:16:22,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1044 states. [2019-10-13 21:16:22,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1429 transitions. [2019-10-13 21:16:22,243 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1429 transitions. Word has length 208 [2019-10-13 21:16:22,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:22,243 INFO L462 AbstractCegarLoop]: Abstraction has 1044 states and 1429 transitions. [2019-10-13 21:16:22,243 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:16:22,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1429 transitions. [2019-10-13 21:16:22,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-13 21:16:22,249 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:22,249 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] [2019-10-13 21:16:22,461 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:22,461 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:22,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:22,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1383633511, now seen corresponding path program 2 times [2019-10-13 21:16:22,462 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:22,463 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290050123] [2019-10-13 21:16:22,463 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:22,463 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:22,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:22,731 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:16:22,732 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290050123] [2019-10-13 21:16:22,732 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930006337] [2019-10-13 21:16:22,732 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 [2019-10-13 21:16:23,275 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:23,276 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:23,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 2156 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:16:23,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:23,455 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:23,456 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:23,931 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:23,932 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:23,932 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15] total 27 [2019-10-13 21:16:23,932 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471108638] [2019-10-13 21:16:23,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:23,933 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:23,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:23,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2019-10-13 21:16:23,934 INFO L87 Difference]: Start difference. First operand 1044 states and 1429 transitions. Second operand 14 states.