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_spec0_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:12:04,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:12:04,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:12:04,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:12:04,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:12:04,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:12:04,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:12:04,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:12:04,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:12:04,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:12:04,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:12:04,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:12:04,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:12:04,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:12:04,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:12:04,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:12:04,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:12:04,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:12:04,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:12:04,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:12:04,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:12:04,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:12:04,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:12:04,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:12:04,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:12:04,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:12:04,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:12:04,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:12:04,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:12:04,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:12:04,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:12:04,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:12:04,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:12:04,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:12:04,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:12:04,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:12:04,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:12:04,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:12:04,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:12:04,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:12:04,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:12:04,185 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:12:04,206 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:12:04,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:12:04,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:12:04,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:12:04,209 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:12:04,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:12:04,209 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:12:04,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:12:04,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:12:04,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:12:04,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:12:04,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:12:04,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:12:04,212 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:12:04,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:12:04,212 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:12:04,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:12:04,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:12:04,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:12:04,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:12:04,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:12:04,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:12:04,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:12:04,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:12:04,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:12:04,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:12:04,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:12:04,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:12:04,215 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:12:04,506 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:12:04,529 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:12:04,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:12:04,534 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:12:04,534 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:12:04,535 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product35.cil.c [2019-10-15 01:12:04,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/143f8916f/81fa059cbf484751a2a47337c1675f01/FLAGb8a79cdc7 [2019-10-15 01:12:05,245 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:12:05,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product35.cil.c [2019-10-15 01:12:05,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/143f8916f/81fa059cbf484751a2a47337c1675f01/FLAGb8a79cdc7 [2019-10-15 01:12:05,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/143f8916f/81fa059cbf484751a2a47337c1675f01 [2019-10-15 01:12:05,459 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:12:05,460 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:12:05,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:12:05,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:12:05,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:12:05,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:12:05" (1/1) ... [2019-10-15 01:12:05,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a27626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:05, skipping insertion in model container [2019-10-15 01:12:05,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:12:05" (1/1) ... [2019-10-15 01:12:05,475 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:12:05,547 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:12:06,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:12:06,414 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:12:06,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:12:06,639 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:12:06,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:06 WrapperNode [2019-10-15 01:12:06,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:12:06,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:12:06,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:12:06,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:12:06,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:06" (1/1) ... [2019-10-15 01:12:06,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:06" (1/1) ... [2019-10-15 01:12:06,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:06" (1/1) ... [2019-10-15 01:12:06,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:06" (1/1) ... [2019-10-15 01:12:06,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:06" (1/1) ... [2019-10-15 01:12:06,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:06" (1/1) ... [2019-10-15 01:12:06,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:06" (1/1) ... [2019-10-15 01:12:06,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:12:06,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:12:06,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:12:06,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:12:06,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:12:06,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:12:06,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:12:06,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:12:06,890 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:12:06,890 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:12:06,891 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-15 01:12:06,891 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:12:06,891 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:12:06,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:12:06,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:12:06,892 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:12:06,892 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:12:06,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:12:06,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:12:06,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:12:06,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:12:06,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:12:06,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:12:06,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:12:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptForward_spec__1 [2019-10-15 01:12:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:12:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:12:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:12:06,894 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:12:06,895 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:12:06,895 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:12:06,895 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:12:06,895 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-15 01:12:06,895 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:12:06,895 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:12:06,895 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:12:06,896 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:12:06,896 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:12:06,896 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:12:06,896 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:12:06,896 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:12:06,896 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:12:06,897 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:12:06,897 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:12:06,897 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:12:06,897 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:12:06,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:12:06,897 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:12:06,897 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:12:06,898 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:12:06,898 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:12:06,898 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:12:06,898 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:12:06,898 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:12:06,898 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:12:06,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:12:06,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:12:06,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:12:06,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:12:06,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:12:06,899 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:12:06,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:12:06,899 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:12:06,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:12:06,900 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:12:06,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:12:06,900 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:12:06,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:12:06,900 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:12:06,901 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:12:06,901 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:12:06,901 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:12:06,901 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:12:06,901 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:12:06,901 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:12:06,901 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:12:06,902 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:12:06,902 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:12:06,902 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:12:06,902 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:12:06,902 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:12:06,902 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:12:06,902 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:12:06,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:12:06,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:12:06,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:12:06,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:12:06,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:12:06,903 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:12:06,904 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:12:06,904 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:12:06,904 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:12:06,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:12:06,904 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:12:06,904 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:12:06,905 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:12:06,905 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:12:06,905 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:12:06,905 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:12:06,905 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:12:06,905 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:12:06,905 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:12:06,906 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:12:06,906 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:12:06,906 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:12:06,906 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:12:06,906 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:12:06,906 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:12:06,907 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:12:06,907 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:12:06,907 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:12:06,907 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:12:06,907 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:12:06,907 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:12:06,907 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:12:06,908 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:12:06,908 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:12:06,908 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:12:06,908 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:12:06,908 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:12:06,908 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:12:06,908 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:12:06,909 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:12:06,909 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:12:06,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:12:06,909 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:12:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:12:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:12:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:12:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:12:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:12:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:12:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:12:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:12:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:12:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:12:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:12:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:12:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:12:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:12:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:12:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:12:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:12:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:12:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:12:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:12:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-15 01:12:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:12:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:12:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:12:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:12:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:12:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:12:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:12:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:12:06,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:12:06,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:12:06,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:12:06,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:12:06,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:12:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:12:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:12:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:12:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:12:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:12:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:12:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:12:06,917 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptForward_spec__1 [2019-10-15 01:12:06,917 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:12:06,917 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:12:06,917 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:12:06,917 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:12:06,917 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:12:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:12:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:12:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:12:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:12:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:12:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:12:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:12:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:12:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:12:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:12:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:12:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:12:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:12:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:12:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:12:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:12:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:12:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:12:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:12:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:12:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:12:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:12:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:12:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:12:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:12:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:12:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:12:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:12:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:12:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:12:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:12:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:12:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-15 01:12:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:12:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:12:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:12:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:12:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:12:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:12:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:12:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:12:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:12:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:12:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:12:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:12:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:12:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:12:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:12:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:12:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:12:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:12:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:12:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:12:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:12:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:12:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:12:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:12:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:12:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:12:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:12:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:12:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:12:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:12:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:12:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:12:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:12:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:12:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:12:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:12:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:12:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:12:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:12:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:12:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:12:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:12:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:12:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:12:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:12:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:12:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:12:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:12:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:12:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:12:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:12:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:12:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:12:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:12:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:12:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:12:09,082 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:12:09,082 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:12:09,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:12:09 BoogieIcfgContainer [2019-10-15 01:12:09,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:12:09,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:12:09,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:12:09,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:12:09,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:12:05" (1/3) ... [2019-10-15 01:12:09,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35afd2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:12:09, skipping insertion in model container [2019-10-15 01:12:09,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:06" (2/3) ... [2019-10-15 01:12:09,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35afd2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:12:09, skipping insertion in model container [2019-10-15 01:12:09,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:12:09" (3/3) ... [2019-10-15 01:12:09,099 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec0_product35.cil.c [2019-10-15 01:12:09,109 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:12:09,119 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:12:09,141 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:12:09,183 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:12:09,183 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:12:09,183 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:12:09,183 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:12:09,183 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:12:09,184 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:12:09,184 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:12:09,184 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:12:09,219 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states. [2019-10-15 01:12:09,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-10-15 01:12:09,248 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:09,249 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:09,252 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:09,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:09,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1323292494, now seen corresponding path program 1 times [2019-10-15 01:12:09,266 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:09,267 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672188900] [2019-10-15 01:12:09,267 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:09,267 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:09,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 01:12:09,975 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672188900] [2019-10-15 01:12:09,975 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:09,976 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:12:09,976 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170142229] [2019-10-15 01:12:09,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:12:09,983 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:09,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:12:09,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:12:10,000 INFO L87 Difference]: Start difference. First operand 680 states. Second operand 2 states. [2019-10-15 01:12:10,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:10,093 INFO L93 Difference]: Finished difference Result 1035 states and 1395 transitions. [2019-10-15 01:12:10,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:12:10,094 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 241 [2019-10-15 01:12:10,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:10,126 INFO L225 Difference]: With dead ends: 1035 [2019-10-15 01:12:10,127 INFO L226 Difference]: Without dead ends: 651 [2019-10-15 01:12:10,144 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:12:10,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-15 01:12:10,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-10-15 01:12:10,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-15 01:12:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 881 transitions. [2019-10-15 01:12:10,337 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 881 transitions. Word has length 241 [2019-10-15 01:12:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:10,341 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 881 transitions. [2019-10-15 01:12:10,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:12:10,342 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 881 transitions. [2019-10-15 01:12:10,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-10-15 01:12:10,355 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:10,356 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:10,356 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:10,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:10,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1534104076, now seen corresponding path program 1 times [2019-10-15 01:12:10,357 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:10,357 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358284342] [2019-10-15 01:12:10,357 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:10,358 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:10,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 01:12:10,692 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358284342] [2019-10-15 01:12:10,692 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:10,692 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:12:10,692 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13265872] [2019-10-15 01:12:10,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:12:10,701 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:10,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:12:10,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:12:10,702 INFO L87 Difference]: Start difference. First operand 651 states and 881 transitions. Second operand 3 states. [2019-10-15 01:12:10,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:10,857 INFO L93 Difference]: Finished difference Result 1018 states and 1356 transitions. [2019-10-15 01:12:10,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:12:10,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2019-10-15 01:12:10,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:10,878 INFO L225 Difference]: With dead ends: 1018 [2019-10-15 01:12:10,878 INFO L226 Difference]: Without dead ends: 654 [2019-10-15 01:12:10,883 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:12:10,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-10-15 01:12:10,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 653. [2019-10-15 01:12:10,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2019-10-15 01:12:10,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 883 transitions. [2019-10-15 01:12:10,965 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 883 transitions. Word has length 242 [2019-10-15 01:12:10,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:10,967 INFO L462 AbstractCegarLoop]: Abstraction has 653 states and 883 transitions. [2019-10-15 01:12:10,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:12:10,968 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 883 transitions. [2019-10-15 01:12:10,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2019-10-15 01:12:10,984 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:10,985 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:10,985 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:10,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:10,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1794718877, now seen corresponding path program 1 times [2019-10-15 01:12:10,986 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:10,987 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232026523] [2019-10-15 01:12:10,987 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:10,987 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:10,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 01:12:11,379 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232026523] [2019-10-15 01:12:11,379 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:11,380 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:12:11,380 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679571183] [2019-10-15 01:12:11,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:12:11,381 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:11,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:12:11,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:12:11,382 INFO L87 Difference]: Start difference. First operand 653 states and 883 transitions. Second operand 3 states. [2019-10-15 01:12:11,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:11,433 INFO L93 Difference]: Finished difference Result 1286 states and 1770 transitions. [2019-10-15 01:12:11,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:12:11,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 254 [2019-10-15 01:12:11,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:11,440 INFO L225 Difference]: With dead ends: 1286 [2019-10-15 01:12:11,440 INFO L226 Difference]: Without dead ends: 698 [2019-10-15 01:12:11,444 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:12:11,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2019-10-15 01:12:11,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 697. [2019-10-15 01:12:11,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2019-10-15 01:12:11,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 958 transitions. [2019-10-15 01:12:11,481 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 958 transitions. Word has length 254 [2019-10-15 01:12:11,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:11,482 INFO L462 AbstractCegarLoop]: Abstraction has 697 states and 958 transitions. [2019-10-15 01:12:11,482 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:12:11,482 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 958 transitions. [2019-10-15 01:12:11,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2019-10-15 01:12:11,492 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:11,492 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:11,493 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:11,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:11,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1323106751, now seen corresponding path program 1 times [2019-10-15 01:12:11,494 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:11,494 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269327618] [2019-10-15 01:12:11,494 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:11,494 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:11,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:11,750 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 01:12:11,751 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269327618] [2019-10-15 01:12:11,751 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:11,751 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:12:11,751 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492650422] [2019-10-15 01:12:11,752 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:12:11,753 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:11,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:12:11,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:12:11,753 INFO L87 Difference]: Start difference. First operand 697 states and 958 transitions. Second operand 3 states. [2019-10-15 01:12:11,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:11,792 INFO L93 Difference]: Finished difference Result 1415 states and 1990 transitions. [2019-10-15 01:12:11,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:12:11,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 255 [2019-10-15 01:12:11,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:11,798 INFO L225 Difference]: With dead ends: 1415 [2019-10-15 01:12:11,799 INFO L226 Difference]: Without dead ends: 783 [2019-10-15 01:12:11,802 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:12:11,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2019-10-15 01:12:11,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 782. [2019-10-15 01:12:11,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 782 states. [2019-10-15 01:12:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1102 transitions. [2019-10-15 01:12:11,833 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1102 transitions. Word has length 255 [2019-10-15 01:12:11,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:11,834 INFO L462 AbstractCegarLoop]: Abstraction has 782 states and 1102 transitions. [2019-10-15 01:12:11,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:12:11,834 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1102 transitions. [2019-10-15 01:12:11,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2019-10-15 01:12:11,840 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:11,841 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:11,841 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:11,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:11,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1302871583, now seen corresponding path program 1 times [2019-10-15 01:12:11,841 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:11,842 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975833674] [2019-10-15 01:12:11,842 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:11,842 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:11,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:12,384 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-15 01:12:12,384 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975833674] [2019-10-15 01:12:12,385 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:12,385 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-15 01:12:12,385 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623287490] [2019-10-15 01:12:12,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-15 01:12:12,386 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:12,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-15 01:12:12,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:12:12,389 INFO L87 Difference]: Start difference. First operand 782 states and 1102 transitions. Second operand 19 states. [2019-10-15 01:12:18,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:18,643 INFO L93 Difference]: Finished difference Result 2650 states and 3737 transitions. [2019-10-15 01:12:18,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-15 01:12:18,644 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 258 [2019-10-15 01:12:18,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:18,667 INFO L225 Difference]: With dead ends: 2650 [2019-10-15 01:12:18,668 INFO L226 Difference]: Without dead ends: 2299 [2019-10-15 01:12:18,672 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-10-15 01:12:18,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2019-10-15 01:12:18,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2262. [2019-10-15 01:12:18,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2262 states. [2019-10-15 01:12:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3204 transitions. [2019-10-15 01:12:18,805 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3204 transitions. Word has length 258 [2019-10-15 01:12:18,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:18,807 INFO L462 AbstractCegarLoop]: Abstraction has 2262 states and 3204 transitions. [2019-10-15 01:12:18,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-15 01:12:18,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3204 transitions. [2019-10-15 01:12:18,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2019-10-15 01:12:18,819 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:18,819 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:18,820 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:18,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:18,820 INFO L82 PathProgramCache]: Analyzing trace with hash -150304222, now seen corresponding path program 1 times [2019-10-15 01:12:18,821 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:18,821 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984871433] [2019-10-15 01:12:18,821 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:18,821 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:18,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:19,351 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-15 01:12:19,351 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984871433] [2019-10-15 01:12:19,353 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:19,353 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-15 01:12:19,353 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235908039] [2019-10-15 01:12:19,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-15 01:12:19,355 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:19,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-15 01:12:19,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:12:19,356 INFO L87 Difference]: Start difference. First operand 2262 states and 3204 transitions. Second operand 18 states. [2019-10-15 01:12:19,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:19,938 INFO L93 Difference]: Finished difference Result 3915 states and 5505 transitions. [2019-10-15 01:12:19,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-15 01:12:19,938 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 259 [2019-10-15 01:12:19,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:19,954 INFO L225 Difference]: With dead ends: 3915 [2019-10-15 01:12:19,955 INFO L226 Difference]: Without dead ends: 2444 [2019-10-15 01:12:19,966 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:12:19,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2019-10-15 01:12:20,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 2444. [2019-10-15 01:12:20,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2444 states. [2019-10-15 01:12:20,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 3473 transitions. [2019-10-15 01:12:20,090 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 3473 transitions. Word has length 259 [2019-10-15 01:12:20,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:20,092 INFO L462 AbstractCegarLoop]: Abstraction has 2444 states and 3473 transitions. [2019-10-15 01:12:20,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-15 01:12:20,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 3473 transitions. [2019-10-15 01:12:20,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2019-10-15 01:12:20,104 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:20,104 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:20,105 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:20,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:20,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1524612594, now seen corresponding path program 1 times [2019-10-15 01:12:20,106 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:20,106 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123077651] [2019-10-15 01:12:20,106 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:20,106 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:20,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:20,697 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-15 01:12:20,697 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123077651] [2019-10-15 01:12:20,698 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:20,698 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-15 01:12:20,698 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513470576] [2019-10-15 01:12:20,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:12:20,700 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:20,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:12:20,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:12:20,701 INFO L87 Difference]: Start difference. First operand 2444 states and 3473 transitions. Second operand 15 states. [2019-10-15 01:12:25,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:25,445 INFO L93 Difference]: Finished difference Result 4117 states and 5799 transitions. [2019-10-15 01:12:25,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-10-15 01:12:25,446 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 259 [2019-10-15 01:12:25,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:25,462 INFO L225 Difference]: With dead ends: 4117 [2019-10-15 01:12:25,463 INFO L226 Difference]: Without dead ends: 2544 [2019-10-15 01:12:25,470 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-10-15 01:12:25,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2019-10-15 01:12:25,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2514. [2019-10-15 01:12:25,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2514 states. [2019-10-15 01:12:25,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 3589 transitions. [2019-10-15 01:12:25,576 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 3589 transitions. Word has length 259 [2019-10-15 01:12:25,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:25,577 INFO L462 AbstractCegarLoop]: Abstraction has 2514 states and 3589 transitions. [2019-10-15 01:12:25,577 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:12:25,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 3589 transitions. [2019-10-15 01:12:25,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2019-10-15 01:12:25,588 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:25,588 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:25,589 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:25,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:25,589 INFO L82 PathProgramCache]: Analyzing trace with hash 500619753, now seen corresponding path program 1 times [2019-10-15 01:12:25,589 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:25,589 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830628128] [2019-10-15 01:12:25,590 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:25,590 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:25,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-15 01:12:25,856 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830628128] [2019-10-15 01:12:25,856 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:25,856 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:12:25,856 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294260261] [2019-10-15 01:12:25,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:12:25,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:25,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:12:25,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:12:25,860 INFO L87 Difference]: Start difference. First operand 2514 states and 3589 transitions. Second operand 5 states. [2019-10-15 01:12:27,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:27,227 INFO L93 Difference]: Finished difference Result 6250 states and 8975 transitions. [2019-10-15 01:12:27,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:12:27,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 259 [2019-10-15 01:12:27,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:27,261 INFO L225 Difference]: With dead ends: 6250 [2019-10-15 01:12:27,262 INFO L226 Difference]: Without dead ends: 5415 [2019-10-15 01:12:27,269 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:12:27,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5415 states. [2019-10-15 01:12:27,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5415 to 5397. [2019-10-15 01:12:27,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5397 states. [2019-10-15 01:12:27,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5397 states to 5397 states and 7750 transitions. [2019-10-15 01:12:27,530 INFO L78 Accepts]: Start accepts. Automaton has 5397 states and 7750 transitions. Word has length 259 [2019-10-15 01:12:27,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:27,531 INFO L462 AbstractCegarLoop]: Abstraction has 5397 states and 7750 transitions. [2019-10-15 01:12:27,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:12:27,531 INFO L276 IsEmpty]: Start isEmpty. Operand 5397 states and 7750 transitions. [2019-10-15 01:12:27,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2019-10-15 01:12:27,545 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:27,545 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:27,546 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:27,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:27,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1958504696, now seen corresponding path program 1 times [2019-10-15 01:12:27,546 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:27,547 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120936016] [2019-10-15 01:12:27,547 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:27,547 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:27,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:12:27,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120936016] [2019-10-15 01:12:27,875 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262870658] [2019-10-15 01:12:27,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:12:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:28,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 3344 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:12:28,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:12:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:12:28,794 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:12:29,246 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:12:29,319 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:12:29,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:12:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:12:29,590 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:12:29,591 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-15 01:12:29,591 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760862143] [2019-10-15 01:12:29,591 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:12:29,592 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:29,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:12:29,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:12:29,592 INFO L87 Difference]: Start difference. First operand 5397 states and 7750 transitions. Second operand 9 states. [2019-10-15 01:12:31,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:31,314 INFO L93 Difference]: Finished difference Result 10772 states and 15480 transitions. [2019-10-15 01:12:31,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:12:31,315 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 259 [2019-10-15 01:12:31,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:31,349 INFO L225 Difference]: With dead ends: 10772 [2019-10-15 01:12:31,349 INFO L226 Difference]: Without dead ends: 5411 [2019-10-15 01:12:31,373 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 512 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:12:31,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2019-10-15 01:12:31,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 5411. [2019-10-15 01:12:31,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5411 states. [2019-10-15 01:12:31,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5411 states to 5411 states and 7768 transitions. [2019-10-15 01:12:31,743 INFO L78 Accepts]: Start accepts. Automaton has 5411 states and 7768 transitions. Word has length 259 [2019-10-15 01:12:31,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:31,743 INFO L462 AbstractCegarLoop]: Abstraction has 5411 states and 7768 transitions. [2019-10-15 01:12:31,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:12:31,744 INFO L276 IsEmpty]: Start isEmpty. Operand 5411 states and 7768 transitions. [2019-10-15 01:12:31,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2019-10-15 01:12:31,761 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:31,761 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:31,973 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:12:31,973 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:31,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:31,973 INFO L82 PathProgramCache]: Analyzing trace with hash -639530006, now seen corresponding path program 1 times [2019-10-15 01:12:31,974 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:31,974 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036395330] [2019-10-15 01:12:31,975 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:31,975 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:31,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:12:32,312 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036395330] [2019-10-15 01:12:32,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896235212] [2019-10-15 01:12:32,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:12:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:32,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 3345 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:12:32,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:12:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:12:33,112 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:12:33,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:12:33,432 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:12:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:12:33,493 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:12:33,493 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:12:33,494 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359542966] [2019-10-15 01:12:33,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:12:33,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:33,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:12:33,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:12:33,495 INFO L87 Difference]: Start difference. First operand 5411 states and 7768 transitions. Second operand 7 states. [2019-10-15 01:12:35,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:35,140 INFO L93 Difference]: Finished difference Result 10777 states and 15500 transitions. [2019-10-15 01:12:35,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:12:35,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2019-10-15 01:12:35,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:35,174 INFO L225 Difference]: With dead ends: 10777 [2019-10-15 01:12:35,174 INFO L226 Difference]: Without dead ends: 5417 [2019-10-15 01:12:35,195 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 519 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:12:35,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5417 states. [2019-10-15 01:12:35,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5417 to 5417. [2019-10-15 01:12:35,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5417 states. [2019-10-15 01:12:35,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5417 states to 5417 states and 7775 transitions. [2019-10-15 01:12:35,474 INFO L78 Accepts]: Start accepts. Automaton has 5417 states and 7775 transitions. Word has length 260 [2019-10-15 01:12:35,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:35,476 INFO L462 AbstractCegarLoop]: Abstraction has 5417 states and 7775 transitions. [2019-10-15 01:12:35,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:12:35,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5417 states and 7775 transitions. [2019-10-15 01:12:35,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2019-10-15 01:12:35,490 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:35,490 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:35,706 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:12:35,706 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:35,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:35,707 INFO L82 PathProgramCache]: Analyzing trace with hash -607788624, now seen corresponding path program 1 times [2019-10-15 01:12:35,707 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:35,707 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018805424] [2019-10-15 01:12:35,707 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:35,707 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:35,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:12:35,921 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018805424] [2019-10-15 01:12:35,921 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116918115] [2019-10-15 01:12:35,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:12:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:36,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 3346 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:12:36,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:12:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:12:36,780 INFO L321 TraceCheckSpWp]: Computing backward predicates...