/usr/bin/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_spec4_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:52:48,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:52:48,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:52:48,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:52:48,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:52:48,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:52:48,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:52:48,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:52:48,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:52:48,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:52:48,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:52:48,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:52:48,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:52:48,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:52:48,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:52:48,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:52:48,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:52:48,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:52:48,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:52:48,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:52:48,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:52:48,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:52:48,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:52:48,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:52:48,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:52:48,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:52:48,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:52:48,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:52:48,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:52:48,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:52:48,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:52:48,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:52:48,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:52:48,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:52:48,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:52:48,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:52:48,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:52:48,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:52:48,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:52:48,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:52:48,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:52:48,814 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 [2019-11-07 00:52:48,847 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:52:48,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:52:48,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:52:48,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:52:48,853 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:52:48,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:52:48,854 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:52:48,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:52:48,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:52:48,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:52:48,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:52:48,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:52:48,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:52:48,855 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:52:48,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:52:48,855 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:52:48,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:52:48,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:52:48,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:52:48,856 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:52:48,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:52:48,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:52:48,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:52:48,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:52:48,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:52:48,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:52:48,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:52:48,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:52:48,858 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 [2019-11-07 00:52:49,172 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:52:49,194 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:52:49,197 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:52:49,199 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:52:49,199 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:52:49,200 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product33.cil.c [2019-11-07 00:52:49,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb4fa4ef1/3843538b97f346649e3a3f82ef69907f/FLAG3d811d504 [2019-11-07 00:52:49,883 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:52:49,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product33.cil.c [2019-11-07 00:52:49,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb4fa4ef1/3843538b97f346649e3a3f82ef69907f/FLAG3d811d504 [2019-11-07 00:52:50,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb4fa4ef1/3843538b97f346649e3a3f82ef69907f [2019-11-07 00:52:50,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:52:50,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:52:50,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:52:50,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:52:50,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:52:50,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:50" (1/1) ... [2019-11-07 00:52:50,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50c56d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:50, skipping insertion in model container [2019-11-07 00:52:50,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:50" (1/1) ... [2019-11-07 00:52:50,173 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:52:50,326 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:52:51,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:52:51,371 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:52:51,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:52:51,689 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:52:51,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51 WrapperNode [2019-11-07 00:52:51,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:52:51,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:52:51,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:52:51,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:52:51,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51" (1/1) ... [2019-11-07 00:52:51,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51" (1/1) ... [2019-11-07 00:52:51,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51" (1/1) ... [2019-11-07 00:52:51,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51" (1/1) ... [2019-11-07 00:52:51,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51" (1/1) ... [2019-11-07 00:52:51,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51" (1/1) ... [2019-11-07 00:52:51,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51" (1/1) ... [2019-11-07 00:52:51,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:52:51,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:52:51,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:52:51,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:52:51,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51" (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 [2019-11-07 00:52:52,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:52:52,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:52:52,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:52:52,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:52:52,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:52:52,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:52:52,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:52:52,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:52:52,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:52:52,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:52:52,031 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:52:52,031 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:52:52,032 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:52:52,033 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:52:52,033 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:52:52,034 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:52:52,036 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:52:52,036 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:52:52,036 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:52:52,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:52:52,037 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:52:52,037 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:52:52,037 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:52:52,037 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:52:52,038 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:52:52,038 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:52:52,038 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:52:52,038 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:52:52,038 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:52:52,038 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:52:52,038 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:52:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:52:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:52:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:52:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:52:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:52:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:52:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:52:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:52:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:52:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:52:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:52:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:52:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:52:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:52:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:52:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:52:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:52:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:52:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:52:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:52:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:52:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:52:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:52:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:52:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:52:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:52:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:52:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:52:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:52:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:52:52,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:52:52,044 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:52:52,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:52:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:52:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:52:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:52:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:52:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:52:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:52:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:52:52,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:52:52,046 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:52:52,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:52:52,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:52:52,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:52:52,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:52:52,047 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:52:52,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:52:52,048 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:52:52,048 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:52:52,048 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:52:52,048 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:52:52,049 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:52:52,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:52:52,050 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:52:52,051 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:52:52,051 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:52:52,051 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-11-07 00:52:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:52:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:52:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:52:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:52:52,053 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:52:52,053 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:52:52,053 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:52:52,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:52:52,053 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:52:52,054 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:52:52,054 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:52:52,054 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:52:52,054 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:52:52,054 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:52:52,054 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:52:52,055 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:52:52,055 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:52:52,055 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:52:52,055 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:52:52,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:52:52,056 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:52:52,056 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:52:52,056 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:52:52,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:52:52,056 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:52:52,057 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:52:52,057 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:52:52,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:52:52,057 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:52:52,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:52:52,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:52:52,058 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:52:52,058 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:52:52,059 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:52:52,059 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:52:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:52:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:52:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:52:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:52:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:52:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:52:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:52:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:52:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:52:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:52:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:52:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:52:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:52:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:52:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:52:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:52:52,068 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:52:52,068 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:52:52,069 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:52:52,069 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:52:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:52:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:52:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:52:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:52:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:52:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:52:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:52:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:52:52,077 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:52:52,077 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:52:52,077 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:52:52,077 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:52:52,077 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:52:52,077 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:52:52,078 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:52:52,079 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:52:52,079 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:52:52,079 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:52:52,079 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:52:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:52:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:52:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:52:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:52:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:52:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:52:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:52:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:52:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:52:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:52:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:52:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:52:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:52:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:52:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:52:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:52:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:52:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:52:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:52:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:52:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:52:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:52:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:52:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:52:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:52:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:52:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:52:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:52:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:52:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:52:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:52:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:52:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:52:52,087 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:52:52,087 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:52:52,087 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:52:52,087 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:52:52,087 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:52:52,087 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:52:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:52:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:52:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:52:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:52:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:52:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:52:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:52:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:52:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:52:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:52:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:52:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:52:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:52:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:52:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:52:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:52:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:52:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:52:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:52:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:52:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:52:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:52:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:52:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:52:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:52:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:52:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:52:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:52:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:52:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:52:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:52:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:52:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:52:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:52:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:52:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:52:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-11-07 00:52:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:52:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:52:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:52:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:52:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:52:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:52:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:52:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:52:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:52:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:52:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:52:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:52:54,365 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:52:54,365 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:52:54,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:54 BoogieIcfgContainer [2019-11-07 00:52:54,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:52:54,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:52:54,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:52:54,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:52:54,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:52:50" (1/3) ... [2019-11-07 00:52:54,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749f60ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:54, skipping insertion in model container [2019-11-07 00:52:54,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51" (2/3) ... [2019-11-07 00:52:54,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749f60ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:54, skipping insertion in model container [2019-11-07 00:52:54,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:54" (3/3) ... [2019-11-07 00:52:54,375 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product33.cil.c [2019-11-07 00:52:54,385 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:52:54,394 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:52:54,406 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:52:54,435 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:52:54,436 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:52:54,436 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:52:54,436 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:52:54,436 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:52:54,436 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:52:54,436 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:52:54,436 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:52:54,519 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states. [2019-11-07 00:52:54,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-11-07 00:52:54,538 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:54,540 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:54,542 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:54,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:54,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1597170516, now seen corresponding path program 1 times [2019-11-07 00:52:54,559 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:54,559 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524324013] [2019-11-07 00:52:54,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:55,181 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524324013] [2019-11-07 00:52:55,182 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:55,182 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:52:55,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747742462] [2019-11-07 00:52:55,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:52:55,190 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:55,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:52:55,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:52:55,208 INFO L87 Difference]: Start difference. First operand 590 states. Second operand 2 states. [2019-11-07 00:52:55,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:55,343 INFO L93 Difference]: Finished difference Result 911 states and 1196 transitions. [2019-11-07 00:52:55,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:52:55,345 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 164 [2019-11-07 00:52:55,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:55,380 INFO L225 Difference]: With dead ends: 911 [2019-11-07 00:52:55,380 INFO L226 Difference]: Without dead ends: 567 [2019-11-07 00:52:55,392 INFO L630 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 [2019-11-07 00:52:55,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-11-07 00:52:55,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2019-11-07 00:52:55,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2019-11-07 00:52:55,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 749 transitions. [2019-11-07 00:52:55,490 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 749 transitions. Word has length 164 [2019-11-07 00:52:55,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:55,494 INFO L462 AbstractCegarLoop]: Abstraction has 567 states and 749 transitions. [2019-11-07 00:52:55,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:52:55,494 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 749 transitions. [2019-11-07 00:52:55,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-11-07 00:52:55,504 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:55,506 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:55,507 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:55,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:55,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1060723953, now seen corresponding path program 1 times [2019-11-07 00:52:55,508 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:55,510 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572747456] [2019-11-07 00:52:55,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:55,899 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:55,899 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572747456] [2019-11-07 00:52:55,899 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:55,900 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:55,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758043750] [2019-11-07 00:52:55,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:55,914 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:55,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:55,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:55,920 INFO L87 Difference]: Start difference. First operand 567 states and 749 transitions. Second operand 3 states. [2019-11-07 00:52:56,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:56,010 INFO L93 Difference]: Finished difference Result 894 states and 1164 transitions. [2019-11-07 00:52:56,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:56,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-11-07 00:52:56,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:56,020 INFO L225 Difference]: With dead ends: 894 [2019-11-07 00:52:56,021 INFO L226 Difference]: Without dead ends: 570 [2019-11-07 00:52:56,023 INFO L630 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 [2019-11-07 00:52:56,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2019-11-07 00:52:56,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 569. [2019-11-07 00:52:56,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2019-11-07 00:52:56,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 751 transitions. [2019-11-07 00:52:56,084 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 751 transitions. Word has length 165 [2019-11-07 00:52:56,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:56,085 INFO L462 AbstractCegarLoop]: Abstraction has 569 states and 751 transitions. [2019-11-07 00:52:56,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:56,086 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 751 transitions. [2019-11-07 00:52:56,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-11-07 00:52:56,093 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:56,093 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:56,093 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:56,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:56,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1599570176, now seen corresponding path program 1 times [2019-11-07 00:52:56,094 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:56,094 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257871379] [2019-11-07 00:52:56,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:56,335 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:56,335 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257871379] [2019-11-07 00:52:56,336 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:56,336 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:56,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5238152] [2019-11-07 00:52:56,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:56,340 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:56,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:56,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:56,341 INFO L87 Difference]: Start difference. First operand 569 states and 751 transitions. Second operand 3 states. [2019-11-07 00:52:56,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:56,391 INFO L93 Difference]: Finished difference Result 1116 states and 1503 transitions. [2019-11-07 00:52:56,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:56,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2019-11-07 00:52:56,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:56,400 INFO L225 Difference]: With dead ends: 1116 [2019-11-07 00:52:56,401 INFO L226 Difference]: Without dead ends: 612 [2019-11-07 00:52:56,403 INFO L630 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 [2019-11-07 00:52:56,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-11-07 00:52:56,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 611. [2019-11-07 00:52:56,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2019-11-07 00:52:56,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 823 transitions. [2019-11-07 00:52:56,430 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 823 transitions. Word has length 177 [2019-11-07 00:52:56,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:56,431 INFO L462 AbstractCegarLoop]: Abstraction has 611 states and 823 transitions. [2019-11-07 00:52:56,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:56,431 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 823 transitions. [2019-11-07 00:52:56,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-11-07 00:52:56,435 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:56,435 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:56,435 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:56,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:56,436 INFO L82 PathProgramCache]: Analyzing trace with hash 161290847, now seen corresponding path program 1 times [2019-11-07 00:52:56,436 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:56,436 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61414920] [2019-11-07 00:52:56,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:56,705 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61414920] [2019-11-07 00:52:56,705 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:56,708 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:56,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950021237] [2019-11-07 00:52:56,710 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:56,710 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:56,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:56,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:56,711 INFO L87 Difference]: Start difference. First operand 611 states and 823 transitions. Second operand 3 states. [2019-11-07 00:52:56,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:56,776 INFO L93 Difference]: Finished difference Result 1239 states and 1714 transitions. [2019-11-07 00:52:56,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:56,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2019-11-07 00:52:56,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:56,787 INFO L225 Difference]: With dead ends: 1239 [2019-11-07 00:52:56,787 INFO L226 Difference]: Without dead ends: 693 [2019-11-07 00:52:56,791 INFO L630 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 [2019-11-07 00:52:56,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2019-11-07 00:52:56,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 692. [2019-11-07 00:52:56,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2019-11-07 00:52:56,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 961 transitions. [2019-11-07 00:52:56,848 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 961 transitions. Word has length 178 [2019-11-07 00:52:56,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:56,849 INFO L462 AbstractCegarLoop]: Abstraction has 692 states and 961 transitions. [2019-11-07 00:52:56,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:56,849 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 961 transitions. [2019-11-07 00:52:56,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-11-07 00:52:56,858 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:56,858 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:56,859 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:56,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:56,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1626643826, now seen corresponding path program 1 times [2019-11-07 00:52:56,860 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:56,861 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335509087] [2019-11-07 00:52:56,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:57,221 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335509087] [2019-11-07 00:52:57,221 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:57,221 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:52:57,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367773286] [2019-11-07 00:52:57,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:52:57,222 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:57,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:52:57,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:52:57,223 INFO L87 Difference]: Start difference. First operand 692 states and 961 transitions. Second operand 7 states. [2019-11-07 00:53:00,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:00,908 INFO L93 Difference]: Finished difference Result 1332 states and 1783 transitions. [2019-11-07 00:53:00,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:53:00,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2019-11-07 00:53:00,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:00,917 INFO L225 Difference]: With dead ends: 1332 [2019-11-07 00:53:00,917 INFO L226 Difference]: Without dead ends: 1019 [2019-11-07 00:53:00,919 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:53:00,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2019-11-07 00:53:00,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 1010. [2019-11-07 00:53:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2019-11-07 00:53:00,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1370 transitions. [2019-11-07 00:53:00,992 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1370 transitions. Word has length 181 [2019-11-07 00:53:00,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:00,993 INFO L462 AbstractCegarLoop]: Abstraction has 1010 states and 1370 transitions. [2019-11-07 00:53:00,993 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:53:00,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1370 transitions. [2019-11-07 00:53:00,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-11-07 00:53:00,997 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:00,997 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:53:00,997 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:00,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:00,998 INFO L82 PathProgramCache]: Analyzing trace with hash 475123241, now seen corresponding path program 1 times [2019-11-07 00:53:00,998 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:00,998 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459810940] [2019-11-07 00:53:00,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:01,340 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:53:01,341 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459810940] [2019-11-07 00:53:01,341 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:01,341 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-11-07 00:53:01,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718765136] [2019-11-07 00:53:01,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-07 00:53:01,342 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:01,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-07 00:53:01,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:53:01,343 INFO L87 Difference]: Start difference. First operand 1010 states and 1370 transitions. Second operand 18 states. [2019-11-07 00:53:01,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:01,925 INFO L93 Difference]: Finished difference Result 1719 states and 2293 transitions. [2019-11-07 00:53:01,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-07 00:53:01,926 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 182 [2019-11-07 00:53:01,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:01,934 INFO L225 Difference]: With dead ends: 1719 [2019-11-07 00:53:01,935 INFO L226 Difference]: Without dead ends: 1060 [2019-11-07 00:53:01,940 INFO L630 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 [2019-11-07 00:53:01,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2019-11-07 00:53:01,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1056. [2019-11-07 00:53:01,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2019-11-07 00:53:02,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1435 transitions. [2019-11-07 00:53:02,003 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1435 transitions. Word has length 182 [2019-11-07 00:53:02,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:02,006 INFO L462 AbstractCegarLoop]: Abstraction has 1056 states and 1435 transitions. [2019-11-07 00:53:02,006 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-07 00:53:02,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1435 transitions. [2019-11-07 00:53:02,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-11-07 00:53:02,011 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:02,011 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:02,011 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:02,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:02,012 INFO L82 PathProgramCache]: Analyzing trace with hash -264639391, now seen corresponding path program 1 times [2019-11-07 00:53:02,012 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:02,012 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657864679] [2019-11-07 00:53:02,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:53:02,236 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657864679] [2019-11-07 00:53:02,237 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:02,237 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:53:02,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122889134] [2019-11-07 00:53:02,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:53:02,238 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:02,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:53:02,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:53:02,239 INFO L87 Difference]: Start difference. First operand 1056 states and 1435 transitions. Second operand 8 states. [2019-11-07 00:53:03,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:03,433 INFO L93 Difference]: Finished difference Result 1925 states and 2576 transitions. [2019-11-07 00:53:03,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:53:03,434 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 191 [2019-11-07 00:53:03,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:03,448 INFO L225 Difference]: With dead ends: 1925 [2019-11-07 00:53:03,448 INFO L226 Difference]: Without dead ends: 1766 [2019-11-07 00:53:03,450 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:53:03,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2019-11-07 00:53:03,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1753. [2019-11-07 00:53:03,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1753 states. [2019-11-07 00:53:03,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2350 transitions. [2019-11-07 00:53:03,661 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2350 transitions. Word has length 191 [2019-11-07 00:53:03,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:03,662 INFO L462 AbstractCegarLoop]: Abstraction has 1753 states and 2350 transitions. [2019-11-07 00:53:03,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:53:03,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2350 transitions. [2019-11-07 00:53:03,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-11-07 00:53:03,667 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:03,667 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:53:03,667 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:03,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:03,668 INFO L82 PathProgramCache]: Analyzing trace with hash 339589513, now seen corresponding path program 1 times [2019-11-07 00:53:03,668 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:03,668 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136353234] [2019-11-07 00:53:03,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:53:04,130 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136353234] [2019-11-07 00:53:04,131 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:04,131 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-11-07 00:53:04,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010123218] [2019-11-07 00:53:04,132 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-07 00:53:04,132 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:04,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-07 00:53:04,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2019-11-07 00:53:04,134 INFO L87 Difference]: Start difference. First operand 1753 states and 2350 transitions. Second operand 17 states. [2019-11-07 00:53:04,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:04,922 INFO L93 Difference]: Finished difference Result 2402 states and 3183 transitions. [2019-11-07 00:53:04,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 00:53:04,923 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 192 [2019-11-07 00:53:04,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:04,949 INFO L225 Difference]: With dead ends: 2402 [2019-11-07 00:53:04,949 INFO L226 Difference]: Without dead ends: 1752 [2019-11-07 00:53:04,955 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:53:04,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2019-11-07 00:53:05,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1751. [2019-11-07 00:53:05,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1751 states. [2019-11-07 00:53:05,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2345 transitions. [2019-11-07 00:53:05,087 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2345 transitions. Word has length 192 [2019-11-07 00:53:05,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:05,088 INFO L462 AbstractCegarLoop]: Abstraction has 1751 states and 2345 transitions. [2019-11-07 00:53:05,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-07 00:53:05,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2345 transitions. [2019-11-07 00:53:05,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-11-07 00:53:05,096 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:05,097 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:53:05,097 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:05,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:05,098 INFO L82 PathProgramCache]: Analyzing trace with hash 985079459, now seen corresponding path program 2 times [2019-11-07 00:53:05,098 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:05,098 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682520788] [2019-11-07 00:53:05,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:53:05,460 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682520788] [2019-11-07 00:53:05,460 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816193171] [2019-11-07 00:53:05,461 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 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 [2019-11-07 00:53:06,076 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:53:06,076 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:53:06,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 2070 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-07 00:53:06,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:53:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:53:06,400 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:53:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:53:06,951 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:53:06,951 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-11-07 00:53:06,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672870895] [2019-11-07 00:53:06,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:53:06,952 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:06,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:53:06,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:53:06,953 INFO L87 Difference]: Start difference. First operand 1751 states and 2345 transitions. Second operand 14 states. [2019-11-07 00:53:09,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:09,933 INFO L93 Difference]: Finished difference Result 5205 states and 7022 transitions. [2019-11-07 00:53:09,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:53:09,934 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 192 [2019-11-07 00:53:09,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:09,982 INFO L225 Difference]: With dead ends: 5205 [2019-11-07 00:53:09,983 INFO L226 Difference]: Without dead ends: 5198 [2019-11-07 00:53:09,989 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 378 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:53:09,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5198 states. [2019-11-07 00:53:10,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5198 to 3801. [2019-11-07 00:53:10,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3801 states. [2019-11-07 00:53:10,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3801 states to 3801 states and 5205 transitions. [2019-11-07 00:53:10,337 INFO L78 Accepts]: Start accepts. Automaton has 3801 states and 5205 transitions. Word has length 192 [2019-11-07 00:53:10,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:10,338 INFO L462 AbstractCegarLoop]: Abstraction has 3801 states and 5205 transitions. [2019-11-07 00:53:10,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:53:10,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3801 states and 5205 transitions. [2019-11-07 00:53:10,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-11-07 00:53:10,348 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:10,348 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:10,554 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:53:10,554 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:10,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:10,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1277649621, now seen corresponding path program 1 times [2019-11-07 00:53:10,556 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:10,556 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098640132] [2019-11-07 00:53:10,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-11-07 00:53:10,994 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098640132] [2019-11-07 00:53:10,994 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175548284] [2019-11-07 00:53:10,995 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 [2019-11-07 00:53:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:11,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 2767 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:53:11,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:53:11,771 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 00:53:11,771 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:53:12,300 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:53:12,379 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:53:12,446 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:53:12,603 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-07 00:53:12,604 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:53:12,604 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 9] total 24 [2019-11-07 00:53:12,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250201204] [2019-11-07 00:53:12,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:53:12,605 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:12,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:53:12,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2019-11-07 00:53:12,606 INFO L87 Difference]: Start difference. First operand 3801 states and 5205 transitions. Second operand 9 states. [2019-11-07 00:53:15,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:15,262 INFO L93 Difference]: Finished difference Result 7576 states and 10384 transitions. [2019-11-07 00:53:15,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:53:15,263 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 194 [2019-11-07 00:53:15,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:15,285 INFO L225 Difference]: With dead ends: 7576 [2019-11-07 00:53:15,285 INFO L226 Difference]: Without dead ends: 3819 [2019-11-07 00:53:15,303 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 372 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2019-11-07 00:53:15,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2019-11-07 00:53:15,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 3819. [2019-11-07 00:53:15,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3819 states. [2019-11-07 00:53:15,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3819 states to 3819 states and 5226 transitions. [2019-11-07 00:53:15,530 INFO L78 Accepts]: Start accepts. Automaton has 3819 states and 5226 transitions. Word has length 194 [2019-11-07 00:53:15,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:15,531 INFO L462 AbstractCegarLoop]: Abstraction has 3819 states and 5226 transitions. [2019-11-07 00:53:15,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:53:15,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3819 states and 5226 transitions. [2019-11-07 00:53:15,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-11-07 00:53:15,541 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:15,541 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:15,755 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:53:15,756 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:15,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:15,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1095064192, now seen corresponding path program 1 times [2019-11-07 00:53:15,757 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:15,757 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908839455] [2019-11-07 00:53:15,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-11-07 00:53:16,062 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908839455] [2019-11-07 00:53:16,062 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074725045] [2019-11-07 00:53:16,062 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 [2019-11-07 00:53:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:16,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 2768 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:53:16,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:53:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 00:53:16,908 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:53:17,173 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:53:17,223 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:53:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:53:17,272 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:53:17,272 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 7] total 20 [2019-11-07 00:53:17,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452733899] [2019-11-07 00:53:17,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:53:17,273 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:17,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:53:17,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:53:17,274 INFO L87 Difference]: Start difference. First operand 3819 states and 5226 transitions. Second operand 7 states. [2019-11-07 00:53:18,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:18,574 INFO L93 Difference]: Finished difference Result 7546 states and 10345 transitions. [2019-11-07 00:53:18,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:53:18,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2019-11-07 00:53:18,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:18,607 INFO L225 Difference]: With dead ends: 7546 [2019-11-07 00:53:18,607 INFO L226 Difference]: Without dead ends: 3819 [2019-11-07 00:53:18,625 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 379 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2019-11-07 00:53:18,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2019-11-07 00:53:18,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 3819. [2019-11-07 00:53:18,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3819 states. [2019-11-07 00:53:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3819 states to 3819 states and 5212 transitions. [2019-11-07 00:53:18,905 INFO L78 Accepts]: Start accepts. Automaton has 3819 states and 5212 transitions. Word has length 195 [2019-11-07 00:53:18,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:18,905 INFO L462 AbstractCegarLoop]: Abstraction has 3819 states and 5212 transitions. [2019-11-07 00:53:18,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:53:18,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3819 states and 5212 transitions. [2019-11-07 00:53:18,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-11-07 00:53:18,917 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:18,917 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:53:19,128 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:53:19,128 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:19,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:19,129 INFO L82 PathProgramCache]: Analyzing trace with hash 947632913, now seen corresponding path program 1 times [2019-11-07 00:53:19,129 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:19,129 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492064443] [2019-11-07 00:53:19,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:19,258 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:53:19,259 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492064443] [2019-11-07 00:53:19,259 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910042746] [2019-11-07 00:53:19,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-07 00:53:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:19,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 2763 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:53:19,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:53:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:53:20,046 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:53:20,554 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:53:20,623 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:53:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:53:20,676 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:53:20,676 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-11-07 00:53:20,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689854624] [2019-11-07 00:53:20,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:53:20,680 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:20,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:53:20,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:53:20,681 INFO L87 Difference]: Start difference. First operand 3819 states and 5212 transitions. Second operand 7 states.