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_spec27_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:13:43,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:13:43,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:13:44,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:13:44,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:13:44,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:13:44,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:13:44,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:13:44,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:13:44,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:13:44,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:13:44,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:13:44,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:13:44,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:13:44,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:13:44,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:13:44,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:13:44,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:13:44,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:13:44,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:13:44,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:13:44,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:13:44,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:13:44,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:13:44,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:13:44,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:13:44,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:13:44,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:13:44,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:13:44,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:13:44,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:13:44,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:13:44,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:13:44,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:13:44,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:13:44,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:13:44,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:13:44,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:13:44,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:13:44,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:13:44,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:13:44,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:13:44,059 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:13:44,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:13:44,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:13:44,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:13:44,061 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:13:44,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:13:44,062 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:13:44,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:13:44,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:13:44,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:13:44,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:13:44,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:13:44,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:13:44,063 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:13:44,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:13:44,063 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:13:44,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:13:44,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:13:44,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:13:44,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:13:44,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:13:44,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:13:44,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:13:44,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:13:44,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:13:44,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:13:44,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:13:44,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:13:44,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:13:44,368 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:13:44,384 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:13:44,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:13:44,389 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:13:44,390 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:13:44,390 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product19.cil.c [2019-10-15 01:13:44,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e30be7c7e/9e637f7bf63e48b9b8adfe564c9ec1ad/FLAG3b865d766 [2019-10-15 01:13:45,200 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:13:45,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product19.cil.c [2019-10-15 01:13:45,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e30be7c7e/9e637f7bf63e48b9b8adfe564c9ec1ad/FLAG3b865d766 [2019-10-15 01:13:45,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e30be7c7e/9e637f7bf63e48b9b8adfe564c9ec1ad [2019-10-15 01:13:45,392 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:13:45,394 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:13:45,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:13:45,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:13:45,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:13:45,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:13:45" (1/1) ... [2019-10-15 01:13:45,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b70ff60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:45, skipping insertion in model container [2019-10-15 01:13:45,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:13:45" (1/1) ... [2019-10-15 01:13:45,411 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:13:45,500 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:13:46,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:13:46,272 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:13:46,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:13:46,504 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:13:46,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46 WrapperNode [2019-10-15 01:13:46,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:13:46,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:13:46,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:13:46,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:13:46,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46" (1/1) ... [2019-10-15 01:13:46,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46" (1/1) ... [2019-10-15 01:13:46,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46" (1/1) ... [2019-10-15 01:13:46,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46" (1/1) ... [2019-10-15 01:13:46,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46" (1/1) ... [2019-10-15 01:13:46,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46" (1/1) ... [2019-10-15 01:13:46,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46" (1/1) ... [2019-10-15 01:13:46,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:13:46,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:13:46,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:13:46,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:13:46,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:13:46,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:13:46,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:13:46,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:13:46,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:13:46,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:13:46,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:13:46,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:13:46,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:13:46,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:13:46,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:13:46,879 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:13:46,879 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:13:46,879 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:13:46,881 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:13:46,881 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:13:46,882 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:13:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:13:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:13:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:13:46,886 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:13:46,887 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:13:46,887 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:13:46,887 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:13:46,887 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:13:46,888 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:13:46,888 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:13:46,888 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:13:46,888 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:13:46,888 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:13:46,889 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:13:46,889 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:13:46,889 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:13:46,889 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:13:46,889 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:13:46,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:13:46,890 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:13:46,890 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:13:46,891 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:13:46,891 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:13:46,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:13:46,891 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:13:46,892 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:13:46,892 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:13:46,892 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:13:46,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:13:46,893 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:13:46,893 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:13:46,893 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:13:46,893 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:13:46,894 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:13:46,894 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:13:46,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:13:46,895 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:13:46,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:13:46,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:13:46,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:13:46,896 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:13:46,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:13:46,896 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:13:46,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:13:46,897 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:13:46,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:13:46,898 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:13:46,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:13:46,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:13:46,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:13:46,899 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:13:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:13:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:13:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:13:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:13:46,901 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:13:46,901 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:13:46,902 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:13:46,902 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:13:46,903 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:13:46,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:13:46,903 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:13:46,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:13:46,905 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:13:46,905 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:13:46,905 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:13:46,906 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:13:46,906 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:13:46,907 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:13:46,907 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:13:46,907 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:13:46,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:13:46,909 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:13:46,909 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:13:46,909 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:13:46,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:13:46,910 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:13:46,910 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:13:46,910 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:13:46,910 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:13:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:13:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:13:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:13:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:13:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:13:46,912 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:13:46,912 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:13:46,912 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:13:46,912 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:13:46,912 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:13:46,913 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:13:46,913 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:13:46,913 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:13:46,913 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:13:46,913 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:13:46,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:13:46,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:13:46,914 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:13:46,914 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:13:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:13:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:13:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:13:46,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:13:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:13:46,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:13:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:13:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:13:46,917 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:13:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:13:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:13:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:13:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:13:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:13:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:13:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:13:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:13:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:13:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:13:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:13:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:13:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:13:46,928 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:13:46,928 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:13:46,929 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:13:46,930 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:13:46,930 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:13:46,930 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:13:46,931 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:13:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:13:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:13:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:13:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:13:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:13:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:13:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:13:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:13:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:13:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:13:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:13:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:13:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:13:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:13:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:13:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:13:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:13:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:13:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:13:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:13:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:13:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:13:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:13:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:13:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:13:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:13:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:13:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:13:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:13:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:13:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:13:46,948 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:13:46,948 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:13:46,948 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:13:46,948 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:13:46,948 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:13:46,948 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:13:46,948 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:13:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:13:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:13:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:13:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:13:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:13:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:13:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:13:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:13:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:13:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:13:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:13:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:13:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:13:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:13:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:13:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:13:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:13:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:13:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:13:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:13:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:13:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:13:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:13:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:13:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:13:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:13:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:13:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:13:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:13:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:13:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:13:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:13:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:13:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:13:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:13:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:13:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:13:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:13:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:13:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:13:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:13:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:13:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:13:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:13:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:13:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:13:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:13:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:13:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:13:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:13:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:13:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:13:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:13:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:13:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:13:49,273 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:13:49,274 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:13:49,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:13:49 BoogieIcfgContainer [2019-10-15 01:13:49,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:13:49,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:13:49,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:13:49,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:13:49,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:13:45" (1/3) ... [2019-10-15 01:13:49,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b342e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:13:49, skipping insertion in model container [2019-10-15 01:13:49,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46" (2/3) ... [2019-10-15 01:13:49,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b342e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:13:49, skipping insertion in model container [2019-10-15 01:13:49,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:13:49" (3/3) ... [2019-10-15 01:13:49,285 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product19.cil.c [2019-10-15 01:13:49,298 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:13:49,313 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:13:49,325 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:13:49,370 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:13:49,370 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:13:49,370 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:13:49,370 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:13:49,370 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:13:49,371 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:13:49,371 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:13:49,371 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:13:49,412 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states. [2019-10-15 01:13:49,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 01:13:49,447 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:49,449 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:49,451 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:49,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:49,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1324397403, now seen corresponding path program 1 times [2019-10-15 01:13:49,469 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:49,469 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720229948] [2019-10-15 01:13:49,470 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:49,470 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:49,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:50,174 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:50,175 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720229948] [2019-10-15 01:13:50,175 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:50,176 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:13:50,176 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413244166] [2019-10-15 01:13:50,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:13:50,184 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:50,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:13:50,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:13:50,203 INFO L87 Difference]: Start difference. First operand 496 states. Second operand 2 states. [2019-10-15 01:13:50,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:50,299 INFO L93 Difference]: Finished difference Result 734 states and 963 transitions. [2019-10-15 01:13:50,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:13:50,300 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 179 [2019-10-15 01:13:50,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:50,344 INFO L225 Difference]: With dead ends: 734 [2019-10-15 01:13:50,344 INFO L226 Difference]: Without dead ends: 473 [2019-10-15 01:13:50,356 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:13:50,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2019-10-15 01:13:50,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2019-10-15 01:13:50,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2019-10-15 01:13:50,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 624 transitions. [2019-10-15 01:13:50,493 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 624 transitions. Word has length 179 [2019-10-15 01:13:50,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:50,496 INFO L462 AbstractCegarLoop]: Abstraction has 473 states and 624 transitions. [2019-10-15 01:13:50,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:13:50,496 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 624 transitions. [2019-10-15 01:13:50,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-15 01:13:50,501 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:50,502 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:50,502 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:50,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:50,503 INFO L82 PathProgramCache]: Analyzing trace with hash -703879322, now seen corresponding path program 1 times [2019-10-15 01:13:50,503 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:50,503 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819729860] [2019-10-15 01:13:50,503 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:50,504 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:50,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:50,824 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819729860] [2019-10-15 01:13:50,825 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:50,825 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:50,825 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985069268] [2019-10-15 01:13:50,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:50,836 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:50,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:50,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:50,836 INFO L87 Difference]: Start difference. First operand 473 states and 624 transitions. Second operand 3 states. [2019-10-15 01:13:50,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:50,934 INFO L93 Difference]: Finished difference Result 717 states and 928 transitions. [2019-10-15 01:13:50,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:50,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2019-10-15 01:13:50,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:50,940 INFO L225 Difference]: With dead ends: 717 [2019-10-15 01:13:50,940 INFO L226 Difference]: Without dead ends: 476 [2019-10-15 01:13:50,942 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:50,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2019-10-15 01:13:50,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 475. [2019-10-15 01:13:50,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2019-10-15 01:13:50,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 626 transitions. [2019-10-15 01:13:50,974 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 626 transitions. Word has length 180 [2019-10-15 01:13:50,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:50,975 INFO L462 AbstractCegarLoop]: Abstraction has 475 states and 626 transitions. [2019-10-15 01:13:50,975 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:50,975 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 626 transitions. [2019-10-15 01:13:50,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-15 01:13:50,982 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:50,983 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:50,983 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:50,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:50,986 INFO L82 PathProgramCache]: Analyzing trace with hash 655198354, now seen corresponding path program 1 times [2019-10-15 01:13:50,987 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:50,987 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361306961] [2019-10-15 01:13:50,987 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:50,987 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:50,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:51,205 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:51,205 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361306961] [2019-10-15 01:13:51,205 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:51,205 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:51,206 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356230394] [2019-10-15 01:13:51,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:51,209 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:51,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:51,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:51,210 INFO L87 Difference]: Start difference. First operand 475 states and 626 transitions. Second operand 3 states. [2019-10-15 01:13:51,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:51,265 INFO L93 Difference]: Finished difference Result 926 states and 1250 transitions. [2019-10-15 01:13:51,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:51,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2019-10-15 01:13:51,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:51,270 INFO L225 Difference]: With dead ends: 926 [2019-10-15 01:13:51,271 INFO L226 Difference]: Without dead ends: 516 [2019-10-15 01:13:51,272 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:51,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2019-10-15 01:13:51,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 515. [2019-10-15 01:13:51,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2019-10-15 01:13:51,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 695 transitions. [2019-10-15 01:13:51,302 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 695 transitions. Word has length 186 [2019-10-15 01:13:51,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:51,303 INFO L462 AbstractCegarLoop]: Abstraction has 515 states and 695 transitions. [2019-10-15 01:13:51,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:51,303 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 695 transitions. [2019-10-15 01:13:51,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-15 01:13:51,308 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:51,308 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:51,309 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:51,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:51,309 INFO L82 PathProgramCache]: Analyzing trace with hash 833813007, now seen corresponding path program 1 times [2019-10-15 01:13:51,309 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:51,309 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975904448] [2019-10-15 01:13:51,310 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:51,310 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:51,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:51,568 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:13:51,573 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975904448] [2019-10-15 01:13:51,573 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:51,573 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:13:51,573 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209751118] [2019-10-15 01:13:51,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:13:51,574 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:51,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:13:51,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:13:51,577 INFO L87 Difference]: Start difference. First operand 515 states and 695 transitions. Second operand 8 states. [2019-10-15 01:13:51,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:51,658 INFO L93 Difference]: Finished difference Result 743 states and 984 transitions. [2019-10-15 01:13:51,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:13:51,659 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2019-10-15 01:13:51,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:51,665 INFO L225 Difference]: With dead ends: 743 [2019-10-15 01:13:51,666 INFO L226 Difference]: Without dead ends: 515 [2019-10-15 01:13:51,667 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:13:51,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2019-10-15 01:13:51,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2019-10-15 01:13:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2019-10-15 01:13:51,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 694 transitions. [2019-10-15 01:13:51,706 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 694 transitions. Word has length 187 [2019-10-15 01:13:51,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:51,707 INFO L462 AbstractCegarLoop]: Abstraction has 515 states and 694 transitions. [2019-10-15 01:13:51,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:13:51,707 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 694 transitions. [2019-10-15 01:13:51,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-15 01:13:51,714 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:51,714 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:51,715 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:51,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:51,715 INFO L82 PathProgramCache]: Analyzing trace with hash 2036488964, now seen corresponding path program 1 times [2019-10-15 01:13:51,715 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:51,716 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892158312] [2019-10-15 01:13:51,716 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:51,717 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:51,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:51,997 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:13:51,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892158312] [2019-10-15 01:13:51,998 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:51,998 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:13:51,998 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598076342] [2019-10-15 01:13:51,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:13:51,999 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:51,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:13:51,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:13:52,000 INFO L87 Difference]: Start difference. First operand 515 states and 694 transitions. Second operand 7 states. [2019-10-15 01:13:54,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:54,544 INFO L93 Difference]: Finished difference Result 994 states and 1300 transitions. [2019-10-15 01:13:54,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:13:54,545 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2019-10-15 01:13:54,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:54,552 INFO L225 Difference]: With dead ends: 994 [2019-10-15 01:13:54,553 INFO L226 Difference]: Without dead ends: 758 [2019-10-15 01:13:54,554 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:13:54,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2019-10-15 01:13:54,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 749. [2019-10-15 01:13:54,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2019-10-15 01:13:54,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 988 transitions. [2019-10-15 01:13:54,605 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 988 transitions. Word has length 194 [2019-10-15 01:13:54,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:54,606 INFO L462 AbstractCegarLoop]: Abstraction has 749 states and 988 transitions. [2019-10-15 01:13:54,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:13:54,606 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 988 transitions. [2019-10-15 01:13:54,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-15 01:13:54,611 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:54,611 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:54,612 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:54,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:54,612 INFO L82 PathProgramCache]: Analyzing trace with hash 820930343, now seen corresponding path program 1 times [2019-10-15 01:13:54,613 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:54,613 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328628270] [2019-10-15 01:13:54,613 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:54,614 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:54,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:13:55,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328628270] [2019-10-15 01:13:55,219 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:55,219 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2019-10-15 01:13:55,219 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064047895] [2019-10-15 01:13:55,220 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-15 01:13:55,220 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:55,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-15 01:13:55,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2019-10-15 01:13:55,222 INFO L87 Difference]: Start difference. First operand 749 states and 988 transitions. Second operand 24 states. [2019-10-15 01:13:55,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:55,920 INFO L93 Difference]: Finished difference Result 1301 states and 1693 transitions. [2019-10-15 01:13:55,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-15 01:13:55,921 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 195 [2019-10-15 01:13:55,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:55,931 INFO L225 Difference]: With dead ends: 1301 [2019-10-15 01:13:55,931 INFO L226 Difference]: Without dead ends: 793 [2019-10-15 01:13:55,933 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=1037, Unknown=0, NotChecked=0, Total=1122 [2019-10-15 01:13:55,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2019-10-15 01:13:55,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 789. [2019-10-15 01:13:55,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2019-10-15 01:13:55,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1036 transitions. [2019-10-15 01:13:55,985 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1036 transitions. Word has length 195 [2019-10-15 01:13:55,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:55,986 INFO L462 AbstractCegarLoop]: Abstraction has 789 states and 1036 transitions. [2019-10-15 01:13:55,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-15 01:13:55,986 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1036 transitions. [2019-10-15 01:13:55,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-10-15 01:13:55,990 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:55,991 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:55,991 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:55,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:55,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1287311709, now seen corresponding path program 1 times [2019-10-15 01:13:55,992 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:55,992 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168878767] [2019-10-15 01:13:55,992 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:55,992 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:55,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:13:56,196 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168878767] [2019-10-15 01:13:56,197 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:56,197 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:13:56,197 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158553567] [2019-10-15 01:13:56,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:13:56,198 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:56,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:13:56,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:13:56,199 INFO L87 Difference]: Start difference. First operand 789 states and 1036 transitions. Second operand 8 states. [2019-10-15 01:14:00,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:00,868 INFO L93 Difference]: Finished difference Result 2335 states and 3002 transitions. [2019-10-15 01:14:00,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 01:14:00,868 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2019-10-15 01:14:00,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:00,883 INFO L225 Difference]: With dead ends: 2335 [2019-10-15 01:14:00,883 INFO L226 Difference]: Without dead ends: 1847 [2019-10-15 01:14:00,888 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:14:00,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2019-10-15 01:14:00,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1833. [2019-10-15 01:14:00,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1833 states. [2019-10-15 01:14:01,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2372 transitions. [2019-10-15 01:14:01,012 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2372 transitions. Word has length 226 [2019-10-15 01:14:01,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:01,012 INFO L462 AbstractCegarLoop]: Abstraction has 1833 states and 2372 transitions. [2019-10-15 01:14:01,012 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:14:01,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2372 transitions. [2019-10-15 01:14:01,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-15 01:14:01,018 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:01,019 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:01,019 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:01,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:01,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1051299991, now seen corresponding path program 1 times [2019-10-15 01:14:01,020 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:01,021 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032909189] [2019-10-15 01:14:01,021 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:01,021 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:01,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:01,492 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:14:01,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032909189] [2019-10-15 01:14:01,493 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:01,493 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-15 01:14:01,493 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749030407] [2019-10-15 01:14:01,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-15 01:14:01,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:01,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-15 01:14:01,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:14:01,496 INFO L87 Difference]: Start difference. First operand 1833 states and 2372 transitions. Second operand 18 states. [2019-10-15 01:14:02,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:02,059 INFO L93 Difference]: Finished difference Result 2522 states and 3249 transitions. [2019-10-15 01:14:02,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-15 01:14:02,059 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 227 [2019-10-15 01:14:02,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:02,069 INFO L225 Difference]: With dead ends: 2522 [2019-10-15 01:14:02,069 INFO L226 Difference]: Without dead ends: 1379 [2019-10-15 01:14:02,074 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:14:02,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2019-10-15 01:14:02,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1373. [2019-10-15 01:14:02,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1373 states. [2019-10-15 01:14:02,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1798 transitions. [2019-10-15 01:14:02,145 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1798 transitions. Word has length 227 [2019-10-15 01:14:02,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:02,145 INFO L462 AbstractCegarLoop]: Abstraction has 1373 states and 1798 transitions. [2019-10-15 01:14:02,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-15 01:14:02,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1798 transitions. [2019-10-15 01:14:02,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-15 01:14:02,151 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:02,151 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:02,152 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:02,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:02,152 INFO L82 PathProgramCache]: Analyzing trace with hash 228824622, now seen corresponding path program 1 times [2019-10-15 01:14:02,152 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:02,152 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149301012] [2019-10-15 01:14:02,153 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:02,153 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:02,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:02,386 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149301012] [2019-10-15 01:14:02,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070978728] [2019-10-15 01:14:02,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:03,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 2733 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:03,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:03,376 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:14:03,377 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:03,841 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:03,924 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:03,988 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:04,125 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:04,126 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:04,127 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-15 01:14:04,127 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975877874] [2019-10-15 01:14:04,128 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:14:04,129 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:04,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:14:04,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:14:04,129 INFO L87 Difference]: Start difference. First operand 1373 states and 1798 transitions. Second operand 9 states. [2019-10-15 01:14:06,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:06,116 INFO L93 Difference]: Finished difference Result 2724 states and 3576 transitions. [2019-10-15 01:14:06,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:14:06,117 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 236 [2019-10-15 01:14:06,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:06,130 INFO L225 Difference]: With dead ends: 2724 [2019-10-15 01:14:06,130 INFO L226 Difference]: Without dead ends: 1387 [2019-10-15 01:14:06,138 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 458 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:14:06,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2019-10-15 01:14:06,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1387. [2019-10-15 01:14:06,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1387 states. [2019-10-15 01:14:06,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1816 transitions. [2019-10-15 01:14:06,261 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1816 transitions. Word has length 236 [2019-10-15 01:14:06,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:06,263 INFO L462 AbstractCegarLoop]: Abstraction has 1387 states and 1816 transitions. [2019-10-15 01:14:06,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:14:06,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1816 transitions. [2019-10-15 01:14:06,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-15 01:14:06,274 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:06,274 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:06,484 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:06,485 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:06,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:06,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1901572560, now seen corresponding path program 1 times [2019-10-15 01:14:06,486 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:06,488 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514996474] [2019-10-15 01:14:06,489 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:06,489 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:06,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:06,850 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514996474] [2019-10-15 01:14:06,850 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723371691] [2019-10-15 01:14:06,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:07,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:07,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:14:07,804 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:08,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:08,145 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:08,206 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:08,206 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:08,207 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:14:08,207 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131704697] [2019-10-15 01:14:08,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:08,208 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:08,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:08,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:14:08,209 INFO L87 Difference]: Start difference. First operand 1387 states and 1816 transitions. Second operand 7 states. [2019-10-15 01:14:09,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:09,335 INFO L93 Difference]: Finished difference Result 2725 states and 3580 transitions. [2019-10-15 01:14:09,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:14:09,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2019-10-15 01:14:09,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:09,345 INFO L225 Difference]: With dead ends: 2725 [2019-10-15 01:14:09,345 INFO L226 Difference]: Without dead ends: 1389 [2019-10-15 01:14:09,352 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 465 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:14:09,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2019-10-15 01:14:09,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1389. [2019-10-15 01:14:09,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1389 states. [2019-10-15 01:14:09,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1819 transitions. [2019-10-15 01:14:09,426 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1819 transitions. Word has length 237 [2019-10-15 01:14:09,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:09,427 INFO L462 AbstractCegarLoop]: Abstraction has 1389 states and 1819 transitions. [2019-10-15 01:14:09,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:09,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1819 transitions. [2019-10-15 01:14:09,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-10-15 01:14:09,434 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:09,435 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:09,644 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:09,644 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:09,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:09,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1012091376, now seen corresponding path program 1 times [2019-10-15 01:14:09,645 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:09,646 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708631755] [2019-10-15 01:14:09,646 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:09,646 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:09,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:09,886 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708631755] [2019-10-15 01:14:09,886 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533418480] [2019-10-15 01:14:09,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:10,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 2735 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:10,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:10,627 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:10,627 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:10,950 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:11,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:11,082 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:11,212 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:11,213 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-15 01:14:11,213 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625308066] [2019-10-15 01:14:11,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:14:11,214 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:11,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:14:11,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:14:11,215 INFO L87 Difference]: Start difference. First operand 1389 states and 1819 transitions. Second operand 16 states. [2019-10-15 01:14:12,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:12,739 INFO L93 Difference]: Finished difference Result 2729 states and 3580 transitions. [2019-10-15 01:14:12,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:12,740 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 238 [2019-10-15 01:14:12,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:12,749 INFO L225 Difference]: With dead ends: 2729 [2019-10-15 01:14:12,749 INFO L226 Difference]: Without dead ends: 1401 [2019-10-15 01:14:12,754 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 462 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:14:12,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2019-10-15 01:14:12,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1399. [2019-10-15 01:14:12,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1399 states. [2019-10-15 01:14:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1830 transitions. [2019-10-15 01:14:12,823 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1830 transitions. Word has length 238 [2019-10-15 01:14:12,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:12,823 INFO L462 AbstractCegarLoop]: Abstraction has 1399 states and 1830 transitions. [2019-10-15 01:14:12,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:14:12,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1830 transitions. [2019-10-15 01:14:12,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-10-15 01:14:12,828 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:12,829 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:13,038 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:13,038 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:13,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:13,039 INFO L82 PathProgramCache]: Analyzing trace with hash -17313324, now seen corresponding path program 2 times [2019-10-15 01:14:13,039 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:13,040 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415556122] [2019-10-15 01:14:13,040 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:13,040 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:13,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:13,720 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415556122] [2019-10-15 01:14:13,720 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822995814] [2019-10-15 01:14:13,720 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:14,333 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:14:14,333 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:14,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:14,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:14,744 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:15,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:15,171 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:14:15,278 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:15,278 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [29] total 39 [2019-10-15 01:14:15,278 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548106836] [2019-10-15 01:14:15,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:14:15,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:15,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:14:15,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1385, Unknown=0, NotChecked=0, Total=1482 [2019-10-15 01:14:15,280 INFO L87 Difference]: Start difference. First operand 1399 states and 1830 transitions. Second operand 12 states.